CN112059327A - Internal and external thread grinding machine with grinding wheel capable of being subjected to in-situ shape correction - Google Patents
Internal and external thread grinding machine with grinding wheel capable of being subjected to in-situ shape correction Download PDFInfo
- Publication number
- CN112059327A CN112059327A CN202010879149.7A CN202010879149A CN112059327A CN 112059327 A CN112059327 A CN 112059327A CN 202010879149 A CN202010879149 A CN 202010879149A CN 112059327 A CN112059327 A CN 112059327A
- Authority
- CN
- China
- Prior art keywords
- grinding wheel
- axis
- sliding plate
- angle
- headstock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 23
- 238000012937 correction Methods 0.000 title description 2
- 230000007246 mechanism Effects 0.000 claims abstract description 105
- 229910003460 diamond Inorganic materials 0.000 claims description 41
- 239000010432 diamond Substances 0.000 claims description 41
- 230000033001 locomotion Effects 0.000 claims description 19
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009966 trimming Methods 0.000 claims description 5
- 229910001651 emery Inorganic materials 0.000 claims 1
- 230000004048 modification Effects 0.000 abstract description 7
- 238000012986 modification Methods 0.000 abstract description 7
- 238000003754 machining Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/36—Thread cutting; Automatic machines specially designed therefor by grinding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention relates to an internal and external thread grinding machine with a grinding wheel capable of being subjected to in-situ shape modification, wherein an A-axis rotary table 10 is arranged on a rotary table base 11, the A-axis rotary table 10 can rotate on the rotary table base 11, a rotating shaft is defined as an A axis, and the rotating shaft rotates around the X axis direction; the grinding wheel headstock 6 can be provided with a large-diameter grinding wheel, and the angle adjustment of the large-diameter grinding wheel or the small-diameter grinding wheel is realized through the rotating shaft A; the swinging angle trimmer 8 is fixed on the side surface of the workpiece headstock 4 and used for generating a certain swinging angle per se, and the swinging angle trimmer 8 consists of a roller rotating mechanism 81, a swinging angle guide mechanism 82 and an angle driving mechanism 83; the swing angle guide mechanism 82 and the angle driving mechanism 83 are both arranged on the side surface of the workpiece headstock 4; the roller rotating mechanism 81 is arranged on the swing angle guide mechanism 82; the angle driving mechanism 83 can drive the swing angle guiding mechanism 82 to rotate; the roller rotating mechanism 81 can finish a large-diameter grinding wheel arranged on the grinding wheel headstock 6 or a small-diameter grinding wheel arranged on the inner grinding head assembly 12, so that the grinding wheel can be shaped in situ.
Description
Technical Field
The invention relates to an internal and external thread grinding machine with a grinding wheel capable of being subjected to in-situ shape modification, and belongs to the technical field of internal and external thread grinding machines capable of realizing in-situ shape modification of the grinding wheel.
Background
The thread grinding equipment is a key equipment for precision thread machining, and is mainly used for precision machining of important thread measuring tools and parts such as thread measuring tools, thread tools, lead screws and the like. Thread grinders belong to special machine tools, are fixed in functional structure, and basically mainly dress single-profile grinding wheels, so that the arrangement and structure of a dressing mechanism for grinding internal or external threads are greatly different. The dressing mechanism of the traditional external thread grinding machine is arranged at the upper part of a grinding wheel headstock, the stroke of the dressing mechanism is short, and a guide rail or a sliding block structure is usually adopted to move at a fixed angle or a circular arc; the traditional internal thread grinding machine generally adopts a special trimming mechanism and is arranged on a working table surface, and the arrangement occupies a large space, so that the specification of the machinable thread of the grinding machine is reduced. With the development of a numerical control system, the dressing precision is higher and higher, the dressing mechanism is arranged on a workpiece headstock and becomes a mainstream, but because the space of the workpiece headstock is limited, the dressing mechanism only has rotational freedom for dressing a diamond wheel, machining needs to be realized by means of interpolation of X and Z axes of a machine tool, for threads with different helix angles, a grinding wheel needs to be adjusted to be parallel to the dressing wheel during dressing, and the grinding wheel rotates to a working swing angle posture again after finishing dressing, so that the requirement for very high repeated positioning precision of the swing angle of the grinding wheel is met, the grinding process rigidity is reduced by the degree of freedom of the grinding wheel shaft with repeated swing angles, and the grinding precision of the threads is influenced.
Because the planetary screw thread comprises single-head and multi-head internal and external threads, the thread profiles are not uniform, and the requirements of long thread length and high precision lead the screw thread to need to finish the grinding wheel for many times in the grinding process. The repeated angle swinging grinding wheel dressing mode adopted by the prior art introduces repeated positioning errors, reduces the rigidity of a grinding wheel headstock, and influences the final thread grinding precision. The structure of the traditional thread grinder needs to be optimized properly to meet the requirement of grinding the threads of the planetary screw, so that the requirement of precisely machining the threads of the planetary screw is met.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the internal and external thread grinding machine with the grinding wheel capable of being subjected to in-situ shape modification is provided, the inclination angle of the diamond disc wheel of the dresser can be swung by a servo motor, when the angle is equal to the grinding working angle of the grinding wheel, the axis of the disc wheel is parallel to the axis of the grinding wheel, the threaded workpiece is directly ground without swinging the angle again after the grinding wheel is dressed, and the precision requirement of the repeated swinging angle of the grinding wheel head frame is reduced; in addition, the grinding machine can conveniently switch the grinding headstock of the internal grinding wheel and the external grinding wheel, so that the grinding of internal and external threaded workpieces is realized; according to the X-axis and Z-axis of the grinding machine, the planetary roller screw rod is adopted for driving, the swinging angle is not needed in the process of combining grinding wheel dressing and thread grinding switching, the rigidity of the grinding machine is improved, and the precision of grinding threads by the grinding machine is facilitated.
The technical scheme of the invention is as follows: an internal and external thread grinding machine with grinding wheels capable of being trimmed in situ, comprising: the device comprises a lathe bed (1), a Z-axis driving lead screw component (2), a workbench (3), a workpiece headstock (4), a swinging angle trimmer (8), an X-axis driving lead screw component (9), an A-axis rotary table (10) and a rotary table base (11); the grinding wheel head frame (6) or the inner grinding head assembly (12) is further included; also optionally included are: a tailstock (7);
the movement direction of the workbench (3) relative to the bed body (1) is set as the Z-axis direction; the workbench (3) linearly reciprocates along the Z-axis direction;
an X axis is defined to be vertical to a Z axis, and the rotary table base (11) linearly reciprocates along the X axis;
the workpiece lathe is characterized in that the workbench (3) and the turntable base (11) are arranged on the lathe bed (1), the workpiece headstock (4) and the tailstock (7) are arranged on the workbench (3), the workpiece headstock (4) is provided with a rotating shaft C, the rotating shaft C is a C shaft and can be provided with a chuck or a tip, and when the tailstock (7) is arranged, the tailstock and the workpiece headstock (4) are matched to realize the propping of the workpiece; the A-axis rotary table (10) is arranged on the rotary table base (11), the A-axis rotary table (10) can rotate on the rotary table base (11), the rotary shaft is defined as an A-axis, the rotary shaft rotates around the X-axis direction (the rotation angle of the A-axis is 0 degrees, the rotation angle is defined as that the A-axis rotates to the position where the axis of the grinding wheel is parallel to the axis of a workpiece is 0 degrees, the maximum rotation angle in the positive and negative directions is 15 degrees), and the grinding wheel headstock (6) or the inner grinding head assembly (12) can be fixedly connected with one side, opposite to the workbench (3), of the A-axis rotary table (10) through bolts; a large-diameter grinding wheel can be arranged on the grinding wheel headstock (6), a small-diameter grinding wheel can be arranged on the inner grinding head component 12, and the angle adjustment of the large-diameter grinding wheel or the small-diameter grinding wheel is realized through the rotating shaft A; the Z-axis driving lead screw assembly (2) is arranged between the workbench (3) and the lathe bed (1) and can drive the workbench (3) to do linear reciprocating motion along the Z-axis direction;
the X-axis driving lead screw assembly (9) is arranged between the turntable base (11) and the lathe bed (1) and can drive the turntable base (11) to do linear reciprocating motion along the X-axis direction;
the swinging angle trimmer (8) consists of a roller rotating mechanism (81), a swinging angle guide mechanism (82) and an angle driving mechanism (83).
The swing angle guide mechanism (82) and the angle driving mechanism (83) are both arranged on the side surface of the workpiece headstock (4);
the roller rotating mechanism (81) is arranged on the swing angle guide mechanism (82);
the angle driving mechanism (83) can drive the swing angle guide mechanism (82) to rotate;
the roller rotating mechanism (81) can finish a large-diameter grinding wheel arranged on the grinding wheel headstock (6) or a small-diameter grinding wheel arranged on the inner grinding head component (12).
Preferably, the bed body (1) is T-shaped and comprises a transverse part and a vertical part; the Z-axis driving lead screw component (2) is arranged at the transverse part of the lathe bed (1), and the workbench (3) is arranged on the lathe bed (1) through the Z-axis driving lead screw component (2); the X-axis driving lead screw component (9) is arranged at the vertical part of the lathe bed (1); the rotary table base (11) is arranged on the lathe bed (1) through an X-axis driving lead screw assembly (9).
Preferably, the grinding wheel headstock (6) can be provided with a large-diameter grinding wheel, and the diameter of the grinding wheel is more than 350 mm; the inner grinding head assembly (12) can be provided with a small-diameter grinding wheel, and the diameter is less than 45 mm.
Preferably, the swinging angle trimmer (8) is fixed on the side surface of the workpiece head frame (4) and can generate a swinging angle per se.
Preferably, the swing angle guide mechanism (82) is arranged on the inner side of the workpiece headstock (4), namely on the side close to the turntable base (11), and the angle drive mechanism (83) is arranged on the left side of the workpiece headstock (4), namely on the end far away from the tailstock 7.
Preferably, the pivot angle guide mechanism (82) includes: a swing angle sliding plate (23), a guide sliding pin (21), a headstock side sliding plate (22), a sliding plate centering pin shaft (31) and a rotary bearing (32);
a sector gear (231) is arranged at the edge of one end of the swing angle sliding plate (23), a sliding pin guide groove (232) is arranged beside the sector gear (231), and a bearing hole is arranged at the other end of the swing angle sliding plate (23) to fix a rotary bearing (32); one side of the swing angle sliding plate (23) facing the dovetail sliding rail is provided with a concave arc-shaped groove corresponding to the dovetail sliding rail, and the concave arc-shaped groove is matched with the dovetail sliding rail to enable the swing angle sliding plate (23) to rotate around a sliding plate centering pin shaft (31); the swing angle sliding plate (23) is also provided with a bracket hole which is used as a frame and used for fixing the roller rotating mechanism (81);
the headstock side sliding plate (22) is provided with a pin hole, a pin shaft hole and a circular arc dovetail slide rail; the pin hole is positioned at one end of the head frame side sliding plate (22), the pin hole is positioned at the other end of the head frame side sliding plate (22), and the arc-shaped dovetail slide rail is positioned in the middle of the head frame side sliding plate (22); the pin hole can be matched with a guide sliding pin (21);
wherein the rotary bearing (32) is sleeved on a sliding plate centering pin shaft (31), and the centering pin shaft (31) is pressed in a pin shaft hole on the headstock side sliding plate (22); the guide sliding pin (21) is pressed into a pin hole on the headstock side sliding plate (22), and the guide sliding pin (21) is matched with a sliding pin guide groove (232) on the swing angle sliding plate (23) to realize the rotary guide of the swing angle sliding plate (23); the axis of the sliding plate centering pin shaft (31) is vertically crossed with the rotation axis of the diamond disk wheel (31) in the roller rotating mechanism (81) and passes through the central symmetry plane of the diamond disk wheel (31). (the central symmetry plane represents a plane parallel to the end face of the diamond disk 31 in FIG. 5, and the dotted line in the middle of the diamond disk)
Preferably, the sliding pin guide groove (232) is arc-shaped, and the circle center of the sliding pin guide groove (232) is positioned at the center of the bearing hole; the headstock side sliding plate (22) is a rectangular flat plate with thickness, the circle center of the circular arc dovetail slide rail is the center of the pin shaft hole, and the pin hole on the headstock side sliding plate (22) and the axis of the pin shaft hole are positioned on the same horizontal plane.
Preferably, the roller rotating mechanism (81) comprises a roller driving motor (24), a second coupling (25), a third locknut (26), a roller shaft supporting bearing (27), a mechanical sealing assembly (28), a roller main shaft (29) and a diamond disk wheel (30);
the roller driving motor (24) is fixed on the frame of the swing angle sliding plate (23);
the roller spindle (29) is arranged in a bracket hole of the swing angle sliding plate (23) through a roller shaft support bearing (27), and the roller spindle (29) is axially fixed in the bracket hole through a third locknut (26); one end of the roller main shaft (29) is fixedly connected with a roller driving motor (24) through a second coupling (25);
a mechanical seal assembly (28) is sleeved on the roller spindle (29), one side of the mechanical seal assembly (28) is in contact with the end face of an orifice of a bracket hole of the swing angle sliding plate (23) on the side far away from the guide sliding pin (21), and the other side of the mechanical seal assembly is in contact with a bracket end cover (34) sleeved on the roller spindle (29), so that the sealing protection of a roller spindle support bearing (27) is realized; the diamond disc wheel (30) is fixed at the other end of the roller main shaft (29) through a nut, and the diamond disc wheel (30) is used for trimming a large-diameter grinding wheel arranged on the grinding wheel headstock (6) or a small-diameter grinding wheel arranged on the inner grinding head assembly (12).
Preferably, the mechanical seal assembly (28) adopts a labyrinth seal mode and comprises a fixed seal ring (282) and a rotary seal ring (281), a shaft shoulder is arranged on the roller spindle (29), one end of the fixed seal ring (282) is fixed on an orifice end face of one side, away from the guide sliding pin (21), of a support hole of the swing angle sliding plate (23) (the fixed seal ring is fixed on the support 23, the seal ring is sleeved on the roller spindle (29), the inner side of the rotary seal ring (281) is sleeved on the roller spindle (29), one end of the rotary seal ring leans against the shaft shoulder of the roller spindle (29), and the other end of the rotary seal ring is contacted with the roller spindle support bearing;
preferably, the angle drive mechanism (83) comprises: the device comprises a swing angle motor (13), a first coupler (14), a first locknut (15), a first support bearing (16), a gear shaft (17), a second support bearing (18), a second locknut (19) and a gear shaft support (20);
the first supporting bearing (16) and the second supporting bearing (18) are arranged at two ends of the gear shaft (170); the gear shaft support (20) is fixed on the side surface (namely one end far away from the tail seat 7) of the workpiece headstock (4); wherein the gear shaft (17) is arranged in a gear shaft support (20) through a first support bearing (16) and a second support bearing (18), both ends of the gear shaft (17) are provided with threads which can be used for installing a first locknut (15) and a second locknut (19), the axial positions of the first support bearing (16) and the second support bearing (18) are limited by the first locknut (15) and the second locknut (19), thereby limiting the axial displacement of the gear shaft (17), and one end of the gear shaft (17) is fixedly connected with the swing angle motor (13) through a first coupler (14); the swing angle motor (13) is arranged on the gear shaft support (20);
the gear shaft (17) is meshed with a sector gear (231) on the swing angle sliding plate (23) through a driving gear (171) on the gear shaft, and the swing angle sliding plate (23) is driven by the gear shaft (17) to rotate for a certain angle around a sliding plate centering pin shaft (31); namely, the angle driving mechanism (83) rotates through a driving gear (171) of the gear shaft (17) to drive a sector gear (231) of the swing angle sliding plate (23) to rotate, so that the angle swing of the swing angle guiding mechanism (82) is realized, and a transmission link is transmitted through a gear.
Preferably, the A-axis rotary table (10) is a rotary body which rotates within 30 degrees, the axis of the rotary body is an A axis, the A-axis rotary table (10) can rotate around the X axis at a certain angle, and a screw hole for installing the grinding wheel head frame (6) and the inner grinding head assembly (12) is arranged on one side, close to the workbench (3), of the A-axis rotary table (10).
Preferably, a grinding wheel head frame (6) for external thread grinding and an internal grinding head assembly (12) for internal thread grinding can be respectively arranged on the A-axis rotary table (10) according to requirements; when the grinding wheel headstock (6) is installed, the thread grinding machine is required to be matched with a tailstock (7) and a tip on the workpiece headstock (4) for grinding the external thread of the screw rod part (5); when the inner grinding head component (12) is installed, the workpiece head frame (4) of the thread grinding machine needs to be matched with a chuck and a clamping nut component (33) for grinding internal threads.
Preferably, the workbench (3) and the turntable base (11) are respectively driven by a Z-axis driving lead screw assembly (2) and an X-axis driving lead screw assembly (9), and the Z-axis driving lead screw assembly (2) and the X-axis driving lead screw assembly (9) are respectively composed of a planetary roller lead screw, a direct drive motor and a roller guide rail;
the direct drive motor drives the planetary roller screw to rotate, and drives the workbench (3) and the turntable base (11) to do linear motion along the roller guide rail;
the planetary roller screw described above can also be replaced with a high-precision ball screw.
Preferably, the gear meshing transmission between the swing angle guide mechanism (82) of the swingable angle trimmer (8) and the angle drive mechanism (83) can also adopt the forms of a worm and a fan-shaped turbine;
preferably, the sliding plate centering pin shaft (31) and the rotary bearing (32) can be replaced by a sliding bearing, a rolling bearing or a crossed roller bearing;
preferably, the circular-arc-shaped dovetail slide rail section of the swing angle guide mechanism (82) is in a dovetail shape or a T shape.
Preferably, the angle driving mechanism (83) can be directly driven to rotate by a manual driving gear shaft (17) through an additional handle without connecting with the swing angle motor (13).
Compared with the prior art, the invention has the advantages that:
(1) the invention solves the problems of precision and rigidity caused by back-and-forth swing in grinding wheel dressing and thread grinding during thread machining, when the grinding wheel is at a working angle, the dresser can adjust the axis of the diamond disc wheel to an angle parallel to the axis of the grinding wheel, and when in dressing, the movement of a grinding wheel headstock is saved, and the dressing time is shortened;
(2) the dresser arranged on the grinding machine has the advantages that the dressing of the large grinding wheel for the external thread and the dressing of the small grinding wheel for the internal thread are both considered, the dresser has the turning degree of freedom, the CNC dressing can be realized by means of the two-axis interpolation of the grinding wheel feeding servo shaft and the workbench servo shaft, and the equipment cost of the traditional internal and external thread grinding machine equipped with two dressing devices is reduced;
(3) the grinding machine can be conveniently switched to realize the processing of internal and external threads, and is suitable for the grinding processing of the threads of the planetary roller screw nut, the roller and the screw rod, so that the planetary roller screw nut, the roller and the screw rod with different specifications can be completed by one device;
(4) the grinding machine uses the planetary roller screw as the transmission screw, has large rigidity in the feeding direction and high feeding resolution, improves the dynamic rigidity of the grinding machine, and can effectively improve the thread machining precision.
Drawings
FIG. 1 is an elevation view of a thread grinding machine of the present invention;
FIG. 2 is a top view of the thread grinder of the present invention;
FIG. 3 is a layout of the thread grinding machine of the present invention;
FIG. 4 is a cross-sectional view of a conditioner construction according to the present invention;
FIG. 5 is a front view of the swing angle slide of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
The invention relates to an internal and external thread grinding machine with a grinding wheel capable of being subjected to in-situ shape modification, wherein an A-axis rotary table 10 is arranged on a rotary table base 11, the A-axis rotary table 10 can rotate on the rotary table base 11, a rotating shaft is defined as an A axis, and the rotating shaft rotates around the X axis direction; the grinding wheel headstock 6 can be provided with a large-diameter grinding wheel, and the angle adjustment of the large-diameter grinding wheel or the small-diameter grinding wheel is realized through the rotating shaft A; the swinging angle trimmer 8 is fixed on the side surface of the workpiece headstock 4 and used for generating a certain swinging angle per se, and the swinging angle trimmer 8 consists of a roller rotating mechanism 81, a swinging angle guide mechanism 82 and an angle driving mechanism 83; the swing angle guide mechanism 82 and the angle driving mechanism 83 are both arranged on the side surface of the workpiece headstock 4; the roller rotating mechanism 81 is arranged on the swing angle guide mechanism 82; the angle driving mechanism 83 can drive the swing angle guiding mechanism 82 to rotate; the roller rotating mechanism 81 can finish a large-diameter grinding wheel arranged on the grinding wheel headstock 6 or a small-diameter grinding wheel arranged on the inner grinding head assembly 12, so that the grinding wheel can be shaped in situ.
FIGS. 1 and 2 are front and top views of a grinding machine of the present invention configured for grinding externally threaded parts; FIG. 3 is a top view of the grinding machine of the present invention configured for grinding internally threaded parts; fig. 4 and 5 are a sectional view of the dresser and a front view of the swing angle slide plate, which respectively show the internal structural arrangement of the dresser and the motion posture of the slide plate when the diamond wheel swings for a certain angle.
The invention relates to an internal and external thread grinding machine with a grinding wheel capable of being subjected to in-situ modification, which comprises: the device comprises a lathe bed (1), a Z-axis driving lead screw component (2), a workbench (3), a workpiece headstock (4), a swinging angle trimmer (8), an X-axis driving lead screw component (9), an A-axis rotary table (10) and a rotary table base (11); the grinding wheel head frame (6) or the inner grinding head assembly (12) is further included; also optionally included are: a tailstock (7);
the movement direction of the workbench (3) relative to the bed body (1) is set as the Z-axis direction; the workbench (3) linearly reciprocates along the Z-axis direction;
an X axis is defined to be vertical to a Z axis, and the rotary table base (11) linearly reciprocates along the X axis;
the workpiece lathe is characterized in that the workbench (3) and the turntable base (11) are arranged on the lathe bed (1), the workpiece headstock (4) and the tailstock (7) are arranged on the workbench (3), the workpiece headstock (4) is provided with a rotating shaft C, the rotating shaft C is a C shaft and can be provided with a chuck or a tip, and when the tailstock (7) is arranged, the tailstock and the workpiece headstock (4) are matched to realize the propping of the workpiece; the A-axis rotary table (10) is arranged on a rotary table base (11), the A-axis rotary table (10) can rotate on the rotary table base (11), a rotating shaft is defined as an A-axis, the rotating shaft rotates around the X-axis direction (the rotating angle of the A-axis is 0 degrees, the rotating angle is preferably defined as that the A-axis rotates to a position where the axis of a grinding wheel is parallel to the axis of a workpiece and the maximum rotating angle of the A-axis in the positive and negative directions is 15 degrees), and a grinding wheel head frame (6) or an inner grinding head assembly (12) can be fixedly connected with one side, opposite to the working table (3), of the A-axis rotary table (10); a large-diameter grinding wheel can be arranged on the grinding wheel headstock (6), a small-diameter grinding wheel can be arranged on the inner grinding head component 12, and the angle adjustment of the large-diameter grinding wheel or the small-diameter grinding wheel is realized through the rotating shaft A; the Z-axis driving lead screw assembly (2) is arranged between the workbench (3) and the lathe bed (1) and can drive the workbench (3) to do linear reciprocating motion along the Z-axis direction;
the X-axis driving lead screw assembly (9) is arranged between the turntable base (11) and the lathe bed (1) and can drive the turntable base (11) to do linear reciprocating motion along the X-axis direction;
the swinging angle trimmer (8) consists of a roller rotating mechanism (81), a swinging angle guide mechanism (82) and an angle driving mechanism (83).
The swing angle guide mechanism (82) and the angle driving mechanism (83) are both arranged on the side surface of the workpiece headstock (4);
the roller rotating mechanism (81) is arranged on the swing angle guide mechanism (82);
the angle driving mechanism (83) can drive the swing angle guide mechanism (82) to rotate;
the roller rotating mechanism (81) can finish a large-diameter grinding wheel arranged on the grinding wheel headstock (6) or a small-diameter grinding wheel arranged on the inner grinding head component (12).
Preferably, the bed body (1) is T-shaped and comprises a transverse part and a vertical part; the Z-axis driving lead screw component (2) is arranged at the transverse part of the lathe bed (1), and the workbench (3) is arranged on the lathe bed (1) through the Z-axis driving lead screw component (2); the X-axis driving lead screw component (9) is arranged at the vertical part of the lathe bed (1); the rotary table base (11) is arranged on the lathe bed (1) through an X-axis driving lead screw assembly (9).
Preferably, the grinding wheel headstock (6) can be provided with a large-diameter grinding wheel, and the diameter of the grinding wheel is more than 350 mm; the inner grinding head assembly (12) can be provided with a small-diameter grinding wheel, and the diameter is less than 45 mm.
Preferably, the swinging angle trimmer (8) is fixed on the side surface of the workpiece head frame (4) and can generate a swinging angle per se.
Preferably, the swing angle guide mechanism (82) is arranged on the inner side of the workpiece headstock (4), namely on the side close to the turntable base (11), and the angle drive mechanism (83) is arranged on the left side of the workpiece headstock (4), namely on the end far away from the tailstock 7.
Preferably, the pivot angle guide mechanism (82) includes: a swing angle sliding plate (23), a guide sliding pin (21), a headstock side sliding plate (22), a sliding plate centering pin shaft (31) and a rotary bearing (32);
a sector gear (231) is arranged at the edge of one end of the swing angle sliding plate (23), a sliding pin guide groove (232) is arranged beside the sector gear (231), and a bearing hole is arranged at the other end of the swing angle sliding plate (23) to fix a rotary bearing (32); one side of the swing angle sliding plate (23) facing the dovetail sliding rail is provided with a concave arc-shaped groove corresponding to the dovetail sliding rail, and the concave arc-shaped groove is matched with the dovetail sliding rail to enable the swing angle sliding plate (23) to rotate around a sliding plate centering pin shaft (31); the swing angle sliding plate (23) is also provided with a bracket hole which is used as a frame and used for fixing the roller rotating mechanism (81);
the headstock side sliding plate (22) is provided with a pin hole, a pin shaft hole and a circular arc dovetail slide rail; the pin hole is positioned at one end of the head frame side sliding plate (22), the pin hole is positioned at the other end of the head frame side sliding plate (22), and the arc-shaped dovetail slide rail is positioned in the middle of the head frame side sliding plate (22); the pin hole can be matched with a guide sliding pin (21);
wherein the rotary bearing (32) is sleeved on a sliding plate centering pin shaft (31), and the centering pin shaft (31) is pressed in a pin shaft hole on the headstock side sliding plate (22); the guide sliding pin (21) is pressed into a pin hole on the headstock side sliding plate (22), and the guide sliding pin (21) is matched with a sliding pin guide groove (232) on the swing angle sliding plate (23) to realize the rotary guide of the swing angle sliding plate (23); the axis of the sliding plate centering pin shaft (31) is vertically crossed with the rotation axis of the diamond disk wheel (31) in the roller rotating mechanism (81) and passes through the central symmetry plane of the diamond disk wheel (31). (the central symmetry plane represents a plane parallel to the end face of the diamond disk 31 in FIG. 5, and the dotted line in the middle of the diamond disk)
Preferably, the sliding pin guide groove (232) is arc-shaped, and the circle center of the sliding pin guide groove (232) is positioned at the center of the bearing hole; the headstock side sliding plate (22) is a rectangular flat plate with thickness, the circle center of the circular arc dovetail slide rail is the center of the pin shaft hole, and the pin hole on the headstock side sliding plate (22) and the axis of the pin shaft hole are positioned on the same horizontal plane.
Preferably, the roller rotating mechanism (81) comprises a roller driving motor (24), a second coupling (25), a third locknut (26), a roller shaft supporting bearing (27), a mechanical sealing assembly (28), a roller main shaft (29) and a diamond disk wheel (30);
the roller driving motor (24) is fixed on the frame of the swing angle sliding plate (23);
the roller spindle (29) is arranged in a bracket hole of the swing angle sliding plate (23) through a roller shaft support bearing (27), and the roller spindle (29) is axially fixed in the bracket hole through a third locknut (26); one end of the roller main shaft (29) is fixedly connected with a roller driving motor (24) through a second coupling (25);
a mechanical seal assembly (28) is sleeved on the roller spindle (29), one side of the mechanical seal assembly (28) is in contact with the end face of an orifice of a bracket hole of the swing angle sliding plate (23) on the side far away from the guide sliding pin (21), and the other side of the mechanical seal assembly is in contact with a bracket end cover (34) sleeved on the roller spindle (29), so that the sealing protection of a roller spindle support bearing (27) is realized; the diamond disc wheel (30) is fixed at the other end of the roller main shaft (29) through a nut, and the diamond disc wheel (30) is used for trimming a large-diameter grinding wheel arranged on the grinding wheel headstock (6) or a small-diameter grinding wheel arranged on the inner grinding head assembly (12).
Preferably, the mechanical seal assembly (28) adopts a labyrinth seal mode and comprises a fixed seal ring (282) and a rotary seal ring (281), a shaft shoulder is arranged on the roller spindle (29), one end of the fixed seal ring (282) is fixed on the end face of an orifice on one side, away from the guide sliding pin (21), of a support hole of the swing angle sliding plate (23), the inner side of the rotary seal ring (281) is sleeved on the roller spindle (29), one end of the rotary seal ring leans against the shaft shoulder of the roller spindle (29), and the other end of the rotary seal ring is in contact with the roller spindle support bearing (27);
preferably, the angle drive mechanism (83) comprises: the device comprises a swing angle motor (13), a first coupler (14), a first locknut (15), a first support bearing (16), a gear shaft (17), a second support bearing (18), a second locknut (19) and a gear shaft support (20);
the first supporting bearing (16) and the second supporting bearing (18) are arranged at two ends of the gear shaft (170); the gear shaft support (20) is fixed on the side surface (namely one end far away from the tail seat 7) of the workpiece headstock (4); wherein the gear shaft (17) is arranged in a gear shaft support (20) through a first support bearing (16) and a second support bearing (18), both ends of the gear shaft (17) are provided with threads which can be used for installing a first locknut (15) and a second locknut (19), the axial positions of the first support bearing (16) and the second support bearing (18) are limited by the first locknut (15) and the second locknut (19), thereby limiting the axial displacement of the gear shaft (17), and one end of the gear shaft (17) is fixedly connected with the swing angle motor (13) through a first coupler (14); the swing angle motor (13) is arranged on the gear shaft support (20);
the gear shaft (17) is meshed with a sector gear (231) on the swing angle sliding plate (23) through a driving gear (171) on the gear shaft, and the swing angle sliding plate (23) is driven by the gear shaft (17) to rotate for a certain angle around a sliding plate centering pin shaft (31); namely, the angle driving mechanism (83) rotates through a driving gear (171) of the gear shaft (17) to drive a sector gear (231) of the swing angle sliding plate (23) to rotate, so that the angle swing of the swing angle guiding mechanism (82) is realized, and a transmission link is transmitted through a gear.
Preferably, the A-axis rotary table (10) is a rotary body which rotates within 30 degrees (namely, the A-axis is defined to rotate to the position that the axis of the grinding wheel is kept parallel to the axis of the workpiece and is 0 degree, the maximum rotation angle in the positive and negative directions is 15 degrees), the axis of the rotary body is an A axis, the A-axis rotary table (10) can rotate around the X axis at a certain angle, and a screw hole for installing the grinding wheel head frame (6) and the inner grinding head assembly (12) is arranged on one side, close to the workbench (3), of the A-axis rotary table (10).
Preferably, a grinding wheel head frame (6) for external thread grinding and an internal grinding head assembly (12) for internal thread grinding can be respectively arranged on the A-axis rotary table (10) according to requirements; when the grinding wheel headstock (6) is installed, the thread grinding machine is required to be matched with a tailstock (7) and a tip on the workpiece headstock (4) for grinding the external thread of the screw rod part (5); when the inner grinding head component (12) is installed, the workpiece head frame (4) of the thread grinding machine needs to be matched with a chuck and a clamping nut component (33) for grinding internal threads.
Preferably, the workbench (3) and the turntable base (11) are respectively driven by a Z-axis driving lead screw assembly (2) and an X-axis driving lead screw assembly (9), and the Z-axis driving lead screw assembly (2) and the X-axis driving lead screw assembly (9) are respectively composed of a planetary roller lead screw, a direct drive motor and a roller guide rail;
the direct drive motor drives the planetary roller screw to rotate, and drives the workbench (3) and the turntable base (11) to do linear motion along the roller guide rail;
the planetary roller screw described above can also be replaced with a high-precision ball screw.
Preferably, the gear meshing transmission between the swing angle guide mechanism (82) of the swingable angle trimmer (8) and the angle drive mechanism (83) can also adopt the forms of a worm and a fan-shaped turbine;
preferably, the sliding plate centering pin shaft (31) and the rotary bearing (32) can be replaced by a sliding bearing, a rolling bearing or a crossed roller bearing;
preferably, the circular-arc-shaped dovetail slide rail section of the swing angle guide mechanism (82) is in a dovetail shape or a T shape.
Preferably, the angle driving mechanism (83) can be directly driven to rotate by a manual driving gear shaft (17) through an additional handle without connecting with the swing angle motor (13).
The preferred scheme of the invention is as follows: the maximum rotation angle of the A shaft arranged on the grinding machine is +/-15 degrees, the corresponding dresser can drive the diamond disk wheel to rotate by +/-15 degrees, and the position of the grinding wheel shaft or the diamond disk wheel shaft in the horizontal direction is set to be 0 degree.
The preferred scheme of the invention is as follows: the bed of the grinding machine is made of cast iron or artificial granite materials, so that the vibration resistance of the grinding machine is improved, and the sensitivity to heat sources is reduced. The Z-axis and X-axis driving lead screws adopt lead screws with the precision of more than G1 level, and full-closed-loop grating scales are adopted to realize high-position precision control.
FIGS. 1 to 5 are respective views of the present invention, and the following description will be made with reference to the drawings
As shown in fig. 1, 2 and 3, the internal and external thread grinding machine with an in-situ grinding wheel truable according to the present invention comprises a machine body 1, a Z-axis driving lead screw assembly 2, a worktable 3, a workpiece headstock 4, a grinding wheel headstock 6, a tailstock 7, a truer 8 capable of swinging an angle, an X-axis driving lead screw assembly 9, an a-axis turntable 10, and the like;
the workbench 3 and the turntable base 11 are arranged on the T-shaped lathe bed 1 and can move on the lathe bed in parallel along the Z axis and the X axis; the workpiece headstock 4 and the tailstock 7 are arranged on the workbench 3; the A-axis turntable 10 is arranged on the turntable base 11 to form an A axis with a certain rotation angle, and the grinding wheel headstock 6 and the inner grinding head assembly 12 can be fixedly connected with the end face of the A-axis turntable 10 through bolts to realize the angle adjustment of the grinding wheel in the thread grinding process; the swinging angle trimmer 8 is arranged on the side surface of the workpiece headstock 4, and can drive the swinging angle sliding plate 23 to rotate for a certain angle around the sliding plate centering pin shaft 31 through the gear shaft 17, so that the axial direction of the roller spindle 29 is parallel to or staggered for a certain angle with the axial direction of the grinding wheel headstock 6.
As shown in fig. 4 and 5, the swingable angle trimmer 8 is composed of a roller rotating mechanism 81, a swing angle guide mechanism 82, and an angle driving mechanism 83. The swing angle guide mechanism 82 is arranged on the inner side of the workpiece headstock 4, the angle driving mechanism 83 is arranged on the left side of the workpiece headstock 4, and the roller rotating mechanism 81 is arranged on the frame of the swing angle guide mechanism 82; the angle driving mechanism 83 rotates through the driving gear 171 of the gear shaft 17 to drive the sector gear 231 of the swing angle sliding plate 23 to rotate, so as to realize the angular swing of the swing angle guiding mechanism 82, and the transmission link is transmitted through a gear.
And the roller rotating mechanism 81 comprises a roller driving motor 24, a second coupling 25, a third anti-loosening nut 26, a roller shaft supporting bearing 27, a mechanical sealing assembly 28, a roller main shaft 29 and a diamond disc wheel 31. The roller spindle 29 is arranged in a bracket hole of the swing angle sliding plate 23 through a roller shaft supporting bearing 27 and is axially fixed through a third locknut 26; one end of the roller spindle 29 is fixedly connected with the roller driving motor 24 through a second coupling 25; one end of the mechanical seal assembly 28 is in contact with the shaft shoulder of the roller spindle, and the other end of the mechanical seal assembly is in contact with the end face of the support hole of the swing angle sliding plate 23 and is fixed at the middle end of the roller spindle 29 through the support hole end cover; the diamond disk 31 is fixed to the right end of the roller spindle 29 by a nut.
The mechanical seal assembly 28 adopts a labyrinth seal mode and comprises a fixed seal ring and a rotary seal ring, the fixed seal ring is fixed on the end face of a support hole of the swing angle sliding plate 23, and the rotary seal ring is fixedly connected with the roller bead sea walking 29.
The swing angle guide mechanism 82 consists of a swing angle slide plate 23, a guide slide pin 21, a headstock side slide plate 22, a slide plate centering pin shaft 31 and a rotary bearing 32; wherein, the revolving bearing 32 is sleeved on the sliding plate centering pin shaft 31, and the revolving bearing and the sliding plate are pressed on the headstock side sliding plate 22 together; the guide sliding pin 21 is pressed into the headstock side sliding plate 22, and the guide sliding pin 21 is matched with a sliding pin guide groove 232 on the swing angle sliding plate 23; the center of a concave arc-shaped groove on the swing angle sliding plate 23 is superposed with the center of the rotary bearing 32, and the concave arc-shaped groove is matched with an arc-shaped guide block on the headstock side sliding plate 22; the axis of the sliding plate centering pin shaft 31 is perpendicularly intersected with the rotation axis of the diamond disk wheel 31 and passes through the central symmetry plane of the diamond disk wheel 31.
The angle driving mechanism 83 is composed of a swing angle motor 13, a first coupler 14, a first locknut 15, a first support bearing 16, a gear shaft 17, a second support bearing 18, a second locknut 19 and a gear shaft support 20. The gear shaft is mounted on a gear shaft support 20 through a first support bearing 16 and a second support bearing 18, axial displacement is limited through a first locknut 15 and a second locknut 19, and the gear shaft 17 is fixedly connected with the swing angle motor 13 through a first coupler 14.
The gear shaft 17 is engaged with the sector gear 232 on the swing angle sliding plate 23 through the driving gear 171.
The A-axis rotary table 10 is a semi-closed rotary shaft and can rotate around the X axis at a certain angle, and screw holes for mounting the grinding wheel head frame 6 and the inner grinding head assembly 12 are arranged on the end face of the A-axis rotary table 10.
The thread grinder can be respectively provided with a grinding wheel headstock 6 for external thread grinding and an internal grinding head assembly 12 for internal thread grinding according to requirements; when the grinding wheel headstock 6 is installed, the thread grinding machine is required to be matched with and provided with the tailstock 7 and the headstock tip for grinding the external thread of the screw rod part 5; when the internal grinding head assembly 12 is installed, the workpiece head frame 4 of the thread grinding machine needs to be matched with an installation jig for clamping the nut part 33 for grinding the internal thread.
The workbench 3 and the turntable base 11 are respectively driven by the Z-axis driving lead screw assembly 2 and the X-axis driving lead screw assembly 9, and the Z-axis driving lead screw assembly 2 and the X-axis driving lead screw assembly 9 are respectively composed of a planetary roller lead screw, a direct drive motor and a roller guide rail.
The planetary roller screw can be replaced by a high-precision ball screw.
The gear meshing transmission between the swing angle guide mechanism 82 and the angle drive mechanism 83 of the swing angle trimmer 8 can also adopt the form of a worm and a fan-shaped turbine;
the slide plate centering pin 31 and the slewing bearing 32 can be sliding bearings, rolling bearings, crossed roller bearings;
the arc-shaped guide block section of the swing angle guide mechanism 82 can be a dovetail-shaped or T-shaped block.
The angle driving mechanism 83 may not be connected to the swing angle motor 13, and the gear shaft 17 may be directly driven to rotate manually by adding a handle.
The implementation method of the swinging angle trimming trimmer 8 comprises the following steps: the swing angle motor 13 drives the gear shaft 17 to rotate through the first coupler 14, the gear shaft 17 is meshed with the sector gear 231 of the swing angle sliding plate 23 to move, the swing angle sliding plate 23 is driven to rotate around the central line of the sliding plate centering pin shaft 31, and the diamond disc wheel 31 fixedly connected to the support shaft hole of the swing angle sliding plate 23 is driven to swing together; the roller driving motor 24 drives the roller spindle 29 to rotate through the second coupling 25, and further drives the diamond disk wheel 31 fixedly connected to the roller spindle 29 to rotate.
The invention discloses an internal and external thread grinding machine with a grinding wheel capable of being subjected to in-situ modification, which adopts the following preferred control mode: after the grinding wheel head frame 6 or the inner grinding head assembly 12 swings to a certain working angle through the A-axis rotary table 10, the swinging angle trimmer 8 drives the diamond disc wheel 31 to swing to a certain angle through the swinging angle motor 13, finally, the axis of the diamond disc wheel 31 rotates to the same working angle as the axis of the grinding wheel, and then the grinding wheel is trimmed through interpolation of an X axis and a Z axis of the thread grinder; after finishing the dressing of the grinding wheel, the grinding wheel headstock 6 or the inner grinding head assembly 12 maintains the dressing working angle, and the screw thread grinding of the screw rod part 5 or the nut part 33 is performed.
The invention realizes a further preferable scheme for improving the dressing precision of the grinding wheel, which comprises the following steps: the excircle rotation linear velocity of the diamond disk wheel is V1, the rotation linear velocity of the dressed grinding wheel is V2, and the dressing precision of the grinding wheel can be further improved by preferably satisfying 0.6< (V2/V1) <1.2 and satisfying the preferable constraint condition.
The invention realizes the further preferable proposal of improving the rigidity of the grinding wheel headstock of the grinding machine: the thread lead angle of the thread part is set as an alpha angle, when the grinding wheel is used for dressing or thread grinding, the swing angle of the grinding wheel keeps the alpha angle fixed and the swing angle of the diamond disc wheel also keeps the alpha angle fixed, the degree of freedom of reciprocating swing between the dressing of the grinding wheel and the grinding of a workpiece is reduced, the dressing rigidity is improved, and the dressing precision of the grinding wheel can be further improved.
The parts to be machined are preferably: the device comprises a planetary lead screw, a rolling rod, a plug gauge, a screw, a planetary lead screw nut, a ring gauge and the like.
The part to be processed needs to be processed, and the following steps are preferably carried out: the device comprises single-head or multi-head external thread characteristic parts such as a planetary lead screw, a rolling rod, a plug gauge and a screw, and single-head or multi-head internal thread characteristic parts such as a planetary lead screw nut, a ring gauge and a nut.
The internal and external thread grinding machine with the grinding wheel capable of being in-situ shaped is used for machining parts to be machined, and the preferred control mode is as follows:
(1) when an external thread part is processed, a workpiece headstock 4 and a tailstock 7 need to be configured and installed on a grinding machine workbench 3, a grinding wheel headstock 6 needs to be installed on an A-axis rotary table 10, a swinging angle trimmer 8 is installed on the side surface of the workpiece headstock 4, a centre and a shifting fork are installed on the workpiece headstock, a workpiece is supported by the centre on the workpiece headstock and the tailstock, and the workpiece headstock drives the shifting fork to rotate and drives the workpiece to rotate; when processing internal thread parts, a workpiece headstock 4 is required to be configured and mounted on a grinding machine workbench 3, an inner grinding head assembly 12 is required to be mounted on an A-axis rotary table 10, a swinging angle trimmer 8 is mounted on the side surface of the workpiece headstock 4, a chuck is mounted on the workpiece headstock, a workpiece is clamped by the chuck on the workpiece headstock, and the chuck drives the workpiece to rotate;
(2) before the threads of the part are machined, the outline of a large grinding wheel on a grinding wheel head frame 6 or a small grinding wheel on an inner grinding head assembly 12 is trimmed, the grinding wheel head frame 6 or the inner grinding head assembly 12 swings by an angle consistent with the lead angle of the threads of the workpiece, an angle-swinging trimmer 8 swings by a certain angle to enable the axis of a diamond disk wheel to be parallel to the axis of the grinding wheel, a driving motor of the diamond disk wheel and the grinding wheel is started to enable the diamond disk wheel and the grinding wheel to rotate, a certain rotation speed ratio (preferably 0.6-1.2) is kept, a lead screw assembly is driven by a Z shaft or an X shaft to respectively drive a working platform to do Z-direction movement and the grinding wheel head frame 6 to do X-direction movement, the diamond disk wheel is in contact with the grinding wheel, the diamond disk wheel and the grinding wheel are trimmed according to the required profile shape through the linkage of the Z-direction movement and the X-direction movement;
(3) after the grinding wheel is shaped, the grinding wheel is driven to move to a certain distance from the workpiece through the movement of the Z-axis and X-axis directions, the workpiece headstock and the grinding wheel are started to enable the workpiece and the grinding wheel to keep a certain rotating speed, and the grinding wheel is driven to move relative to the workpiece according to a certain speed ratio by utilizing the linkage of the Z-axis and the C-axis, so that the thread grinding is realized.
The invention solves the problems of precision and rigidity caused by back-and-forth swing in grinding wheel dressing and thread grinding during thread machining, when the grinding wheel is at a working angle, the dresser can adjust the axis of the diamond disc wheel to an angle parallel to the axis of the grinding wheel, and when in dressing, the movement of a grinding wheel headstock is saved, and the dressing time is shortened; the dresser arranged on the grinding machine considers the dressing of a large grinding wheel for external threads and the dressing of a small grinding wheel for internal threads, the dresser has a turning degree of freedom, and the CNC dressing can be realized by means of two-axis interpolation of a grinding wheel feeding servo shaft and a workbench servo shaft, so that the equipment cost of a traditional internal and external thread grinding machine provided with two dressing devices is reduced;
the grinding machine can be conveniently switched to realize the processing of internal and external threads, and is suitable for the grinding processing of the threads of the planetary roller screw nut, the roller and the screw rod, so that the planetary roller screw nut, the roller and the screw rod with different specifications can be completed by one device; the planetary roller screw is used as the transmission screw, so that the rigidity in the feeding direction is high, the feeding resolution is high, the dynamic rigidity of the grinding machine is improved, and the thread machining precision can be effectively improved.
Claims (10)
1. The utility model provides an inside and outside screw grinder that emery wheel normal position was repaiied shape which characterized in that includes: the device comprises a lathe bed (1), a Z-axis driving lead screw component (2), a workbench (3), a workpiece headstock (4), a swinging angle trimmer (8), an X-axis driving lead screw component (9), an A-axis rotary table (10) and a rotary table base (11); the grinding wheel head frame (6) or the inner grinding head assembly (12) is further included; also optionally included are: a tailstock (7);
the movement direction of the workbench (3) relative to the bed body (1) is set as the Z-axis direction; the workbench (3) linearly reciprocates along the Z-axis direction;
an X axis is defined to be vertical to a Z axis, and the rotary table base (11) linearly reciprocates along the X axis;
the workpiece lathe is characterized in that the workbench (3) and the turntable base (11) are arranged on the lathe bed (1), the workpiece headstock (4) and the tailstock (7) are arranged on the workbench (3), the workpiece headstock (4) is provided with a rotating shaft C, the rotating shaft C is a C shaft and can be provided with a chuck or a tip, and when the tailstock (7) is arranged, the tailstock and the workpiece headstock (4) are matched to realize the propping of the workpiece; the A-axis rotary table (10) is arranged on the rotary table base (11), the A-axis rotary table (10) can rotate on the rotary table base (11), a rotating shaft is defined as an A axis and rotates around the X axis direction, and the grinding wheel head frame (6) or the inner grinding head assembly (12) can be fixedly connected with one side, opposite to the workbench (3), of the A-axis rotary table (10) through bolts; a large-diameter grinding wheel can be arranged on the grinding wheel headstock (6), a small-diameter grinding wheel can be arranged on the inner grinding head component 12, and the angle adjustment of the large-diameter grinding wheel or the small-diameter grinding wheel is realized through the rotating shaft A; the Z-axis driving lead screw assembly (2) is arranged between the workbench (3) and the lathe bed (1) and can drive the workbench (3) to do linear reciprocating motion along the Z-axis direction;
the X-axis driving lead screw assembly (9) is arranged between the turntable base (11) and the lathe bed (1) and can drive the turntable base (11) to do linear reciprocating motion along the X-axis direction;
the swinging angle trimmer (8) consists of a roller rotating mechanism (81), a swinging angle guide mechanism (82) and an angle driving mechanism (83);
the swing angle guide mechanism (82) and the angle driving mechanism (83) are both arranged on the side surface of the workpiece headstock (4);
the roller rotating mechanism (81) is arranged on the swing angle guide mechanism (82);
the angle driving mechanism (83) can drive the swing angle guide mechanism (82) to rotate;
the roller rotating mechanism (81) can finish a large-diameter grinding wheel arranged on the grinding wheel headstock (6) or a small-diameter grinding wheel arranged on the inner grinding head component (12).
2. The internal and external thread grinding machine with grinding wheel capable of being modified in situ according to claim 1, wherein: the lathe bed (1) is T-shaped and comprises a transverse part and a vertical part; the Z-axis driving lead screw component (2) is arranged at the transverse part of the lathe bed (1), and the workbench (3) is arranged on the lathe bed (1) through the Z-axis driving lead screw component (2); the X-axis driving lead screw component (9) is arranged at the vertical part of the lathe bed (1); the rotary table base (11) is arranged on the lathe bed (1) through an X-axis driving lead screw assembly (9).
3. The internal and external thread grinding machine with grinding wheel capable of being modified in situ according to claim 1, wherein: a large-diameter grinding wheel can be arranged on the grinding wheel headstock (6), and the diameter is more than 350 mm; the inner grinding head assembly (12) can be provided with a small-diameter grinding wheel, and the diameter is less than 45 mm.
4. The internal and external thread grinding machine with grinding wheel capable of being modified in situ according to claim 1, wherein: the swinging angle trimmer (8) is fixed on the side surface of the workpiece headstock (4) and can generate a swinging angle per se.
5. The internal and external thread grinding machine with grinding wheel capable of being modified in situ according to claim 1, wherein: the swing angle guide mechanism (82) is arranged on the inner side of the workpiece headstock (4), namely on the side close to the turntable base (11), and the angle drive mechanism (83) is arranged on the left side of the workpiece headstock (4), namely on the end far away from the tailstock 7.
6. The internal and external thread grinding machine with grinding wheel capable of being modified in situ according to claim 1, wherein: a pivot angle guide mechanism (82) comprising: a swing angle sliding plate (23), a guide sliding pin (21), a headstock side sliding plate (22), a sliding plate centering pin shaft (31) and a rotary bearing (32);
a sector gear (231) is arranged at the edge of one end of the swing angle sliding plate (23), a sliding pin guide groove (232) is arranged beside the sector gear (231), and a bearing hole is arranged at the other end of the swing angle sliding plate (23) to fix a rotary bearing (32); one side of the swing angle sliding plate (23) facing the dovetail sliding rail is provided with a concave arc-shaped groove corresponding to the dovetail sliding rail, and the concave arc-shaped groove is matched with the dovetail sliding rail to enable the swing angle sliding plate (23) to rotate around a sliding plate centering pin shaft (31); the swing angle sliding plate (23) is also provided with a bracket hole which is used as a frame and used for fixing the roller rotating mechanism (81);
the headstock side sliding plate (22) is provided with a pin hole, a pin shaft hole and a circular arc dovetail slide rail; the pin hole is positioned at one end of the head frame side sliding plate (22), the pin hole is positioned at the other end of the head frame side sliding plate (22), and the arc-shaped dovetail slide rail is positioned in the middle of the head frame side sliding plate (22); the pin hole can be matched with a guide sliding pin (21),
wherein the rotary bearing (32) is sleeved on a sliding plate centering pin shaft (31), and the centering pin shaft (31) is pressed in a pin shaft hole on the headstock side sliding plate (22); the guide sliding pin (21) is pressed into a pin hole on the headstock side sliding plate (22), and the guide sliding pin (21) is matched with a sliding pin guide groove (232) on the swing angle sliding plate (23) to realize the rotary guide of the swing angle sliding plate (23); the axis of the sliding plate centering pin shaft (31) is vertically crossed with the rotation axis of the diamond disk wheel (31) in the roller rotating mechanism (81) and passes through the central symmetry plane of the diamond disk wheel (31).
7. The internal and external thread grinding machine with grinding wheel capable of being modified in situ according to claim 6, wherein: the sliding pin guide groove (232) is arc-shaped, and the circle center of the sliding pin guide groove (232) is positioned at the center of the bearing hole; the headstock side sliding plate (22) is a rectangular flat plate with thickness, the circle center of the circular arc dovetail slide rail is the center of the pin shaft hole, and the pin hole on the headstock side sliding plate (22) and the axis of the pin shaft hole are positioned on the same horizontal plane.
8. The internal and external thread grinding machine with grinding wheel capable of being modified in situ according to claim 1, wherein: the roller rotating mechanism (81) comprises a roller driving motor (24), a second coupling (25), a third locknut (26), a roller shaft supporting bearing (27), a mechanical sealing assembly (28), a roller main shaft (29) and a diamond disc wheel (30);
the roller driving motor (24) is fixed on the frame of the swing angle sliding plate (23);
the roller spindle (29) is arranged in a bracket hole of the swing angle sliding plate (23) through a roller shaft support bearing (27), and the roller spindle (29) is axially fixed in the bracket hole through a third locknut (26); one end of the roller main shaft (29) is fixedly connected with a roller driving motor (24) through a second coupling (25);
a mechanical seal assembly (28) is sleeved on the roller spindle (29), one side of the mechanical seal assembly (28) is in contact with the end face of an orifice of a bracket hole of the swing angle sliding plate (23) on the side far away from the guide sliding pin (21), and the other side of the mechanical seal assembly is in contact with a bracket end cover (34) sleeved on the roller spindle (29), so that the sealing protection of a roller spindle support bearing (27) is realized; the diamond disc wheel (30) is fixed at the other end of the roller main shaft (29) through a nut, and the diamond disc wheel (30) is used for trimming a large-diameter grinding wheel arranged on the grinding wheel headstock (6) or a small-diameter grinding wheel arranged on the inner grinding head assembly (12).
9. The internal and external thread grinding machine with grinding wheel capable of being modified in situ according to claim 8, wherein: mechanical seal subassembly (28), adopt labyrinth seal mode, including fixed seal ring (282) and rotary seal ring (281), be equipped with the shaft shoulder on gyro wheel main shaft (29), the drill way terminal surface of leading smooth pin (21) one side is kept away from in the stake hole of pivot angle slide (23) is fixed to fixed seal ring (282) one end, the inboard cover of rotary seal ring (281) is on gyro wheel main shaft (29), one end leans on the shaft shoulder of gyro wheel main shaft (29), the other end and gyro wheel axle support bearing (27) contact.
10. The internal and external thread grinding machine with grinding wheel capable of being modified in situ according to claim 1, wherein: the angle driving mechanism (83) can be not connected with the swing angle motor (13) and directly drives the gear shaft (17) to rotate manually by additionally arranging a handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010879149.7A CN112059327B (en) | 2020-08-27 | 2020-08-27 | Internal and external thread grinder with grinding wheel capable of being shaped in situ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010879149.7A CN112059327B (en) | 2020-08-27 | 2020-08-27 | Internal and external thread grinder with grinding wheel capable of being shaped in situ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112059327A true CN112059327A (en) | 2020-12-11 |
| CN112059327B CN112059327B (en) | 2024-09-20 |
Family
ID=73660518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010879149.7A Active CN112059327B (en) | 2020-08-27 | 2020-08-27 | Internal and external thread grinder with grinding wheel capable of being shaped in situ |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112059327B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112497071A (en) * | 2020-12-17 | 2021-03-16 | 无锡七机机床有限公司 | Numerical control grinding wheel dressing device |
| CN113211198A (en) * | 2021-04-21 | 2021-08-06 | 桐乡市三精自动化科技有限公司 | Root canal file grinding machine |
| CN113245916A (en) * | 2021-04-21 | 2021-08-13 | 桐乡市三精自动化科技有限公司 | Small grinding wheel component for processing spiral blade of root canal file |
| CN116652304A (en) * | 2023-07-27 | 2023-08-29 | 朔州金华实业有限公司 | Pipe fitting thread repairing device and using method |
| CN116713903A (en) * | 2023-07-27 | 2023-09-08 | 无锡市科之鑫机械科技有限公司 | Dressing method of grinding wheel and grinding machine for numerical control machining |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2936574Y (en) * | 2006-05-26 | 2007-08-22 | 新乡市日升数控设备有限公司 | Digital control end surface thrust ball bearing channel grinder |
| CN204800078U (en) * | 2015-07-01 | 2015-11-25 | 台州速必得机床有限公司 | Horizontal thread grinder |
| CN105215484A (en) * | 2015-09-24 | 2016-01-06 | 上海大学 | A kind of internal thread grinding machine grinding carriage dip angle adjusting mechanism |
| CN105817968A (en) * | 2016-06-07 | 2016-08-03 | 厦门大学 | Machine for grinding wheel finishing and optical component grinding |
| CN106112145A (en) * | 2016-06-20 | 2016-11-16 | 北京精密机电控制设备研究所 | A kind of planetary lead-screw nut divides sequence grinding fixture, organisation of working and method for grinding |
| CN106180917A (en) * | 2016-08-29 | 2016-12-07 | 广东豪特曼智能机器有限公司 | A CNC grinding machine with a rotatable grinding wheel head |
| CN207448053U (en) * | 2017-11-24 | 2018-06-05 | 马鞍山市利成刀片制造厂 | A kind of arc-shaped blade grinding device |
| CN109397093A (en) * | 2018-12-21 | 2019-03-01 | 广东豪特曼智能机器有限公司 | It is a kind of with the CNC CNC grinder for external thread for repairing sand function automatically |
| CN110340450A (en) * | 2019-07-01 | 2019-10-18 | 湖南中大创远数控装备有限公司 | A kind of numerically controlled tooth grinding machine |
| CN110842714A (en) * | 2019-12-20 | 2020-02-28 | 昆山荣富强机械设备有限公司 | Multifunctional grinding machine |
| CN213672273U (en) * | 2020-08-27 | 2021-07-13 | 北京精密机电控制设备研究所 | Internal and external thread grinding machine with grinding wheel capable of being subjected to in-situ shape correction |
-
2020
- 2020-08-27 CN CN202010879149.7A patent/CN112059327B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2936574Y (en) * | 2006-05-26 | 2007-08-22 | 新乡市日升数控设备有限公司 | Digital control end surface thrust ball bearing channel grinder |
| CN204800078U (en) * | 2015-07-01 | 2015-11-25 | 台州速必得机床有限公司 | Horizontal thread grinder |
| CN105215484A (en) * | 2015-09-24 | 2016-01-06 | 上海大学 | A kind of internal thread grinding machine grinding carriage dip angle adjusting mechanism |
| CN105817968A (en) * | 2016-06-07 | 2016-08-03 | 厦门大学 | Machine for grinding wheel finishing and optical component grinding |
| CN106112145A (en) * | 2016-06-20 | 2016-11-16 | 北京精密机电控制设备研究所 | A kind of planetary lead-screw nut divides sequence grinding fixture, organisation of working and method for grinding |
| CN106180917A (en) * | 2016-08-29 | 2016-12-07 | 广东豪特曼智能机器有限公司 | A CNC grinding machine with a rotatable grinding wheel head |
| CN207448053U (en) * | 2017-11-24 | 2018-06-05 | 马鞍山市利成刀片制造厂 | A kind of arc-shaped blade grinding device |
| CN109397093A (en) * | 2018-12-21 | 2019-03-01 | 广东豪特曼智能机器有限公司 | It is a kind of with the CNC CNC grinder for external thread for repairing sand function automatically |
| CN110340450A (en) * | 2019-07-01 | 2019-10-18 | 湖南中大创远数控装备有限公司 | A kind of numerically controlled tooth grinding machine |
| CN110842714A (en) * | 2019-12-20 | 2020-02-28 | 昆山荣富强机械设备有限公司 | Multifunctional grinding machine |
| CN213672273U (en) * | 2020-08-27 | 2021-07-13 | 北京精密机电控制设备研究所 | Internal and external thread grinding machine with grinding wheel capable of being subjected to in-situ shape correction |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112497071A (en) * | 2020-12-17 | 2021-03-16 | 无锡七机机床有限公司 | Numerical control grinding wheel dressing device |
| CN113211198A (en) * | 2021-04-21 | 2021-08-06 | 桐乡市三精自动化科技有限公司 | Root canal file grinding machine |
| CN113245916A (en) * | 2021-04-21 | 2021-08-13 | 桐乡市三精自动化科技有限公司 | Small grinding wheel component for processing spiral blade of root canal file |
| CN113211198B (en) * | 2021-04-21 | 2023-01-10 | 桐乡市三精自动化科技有限公司 | Root canal file grinding machine |
| CN116652304A (en) * | 2023-07-27 | 2023-08-29 | 朔州金华实业有限公司 | Pipe fitting thread repairing device and using method |
| CN116713903A (en) * | 2023-07-27 | 2023-09-08 | 无锡市科之鑫机械科技有限公司 | Dressing method of grinding wheel and grinding machine for numerical control machining |
| CN116652304B (en) * | 2023-07-27 | 2023-09-26 | 朔州金华实业有限公司 | Pipe fitting thread repairing device and using method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112059327B (en) | 2024-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213672273U (en) | Internal and external thread grinding machine with grinding wheel capable of being subjected to in-situ shape correction | |
| CN112059327B (en) | Internal and external thread grinder with grinding wheel capable of being shaped in situ | |
| CN101513686B (en) | Five-axis multi-functional thread grinding machining center | |
| CN201685166U (en) | Numerically-controlled composite grinding center | |
| CN103203677A (en) | Numerically controlled grinder special for slewing bearing processing | |
| CN101172330A (en) | High hardness rotary spherical CNC precision grinding equipment | |
| CN108098475A (en) | The Compound Machining grinding machine of robot RV reducer pin wheel housing | |
| CN100537140C (en) | Grinding attachment suitable for freely curved face | |
| CN112045539A (en) | Multipurpose numerically controlled grinder | |
| CN114226868A (en) | Forming grinding wheel gear grinding machine tool | |
| CN109702600B (en) | A blade polishing CNC machining center with ten moving axes | |
| CN101480782A (en) | Multifunctional numerically controlled machine based on universal working head | |
| CN201415295Y (en) | Five-axis multifunctional thread grinding machining center | |
| CN205674020U (en) | A kind of crankshaft grinding machine | |
| CN212947098U (en) | Multipurpose numerically controlled grinder | |
| CN101579812B (en) | Method and processing center for external thread rotary milling and grinding | |
| CN201592384U (en) | Ball bearing inner ring raceway grinding device | |
| CN114951838A (en) | Worm wheel gear grinding machine | |
| CN203197714U (en) | Numerical control grinding machine special for machining slewing bearing | |
| CN205764276U (en) | CNC thread tooth grinding machine | |
| JPH01316157A (en) | Grinder | |
| CN118577884A (en) | Internal and external thread compound grinding machine | |
| CN217702838U (en) | Super all-in-one of human joint ball-milling | |
| CN216327598U (en) | Double-ended grinding machine trimming device | |
| CN210307158U (en) | High-precision deep groove ball bearing inner ring groove and inner and outer diameter composite grinding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |