CN108709483B - Axial play testing device of ball screw - Google Patents
Axial play testing device of ball screw Download PDFInfo
- Publication number
- CN108709483B CN108709483B CN201810800320.3A CN201810800320A CN108709483B CN 108709483 B CN108709483 B CN 108709483B CN 201810800320 A CN201810800320 A CN 201810800320A CN 108709483 B CN108709483 B CN 108709483B
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- 238000000034 method Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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Abstract
The invention discloses a ball screw axial play testing device, which belongs to the field of ball screw detection devices and is technically characterized by comprising a ball screw mounting seat and a nut or a screw for fixing a ball screw; the loading device is abutted against the screw rod or the nut of the ball screw rod to limit the screw rod or the nut of the ball screw rod to rotate and drive the screw rod or the nut of the ball screw rod to axially move; the measuring device is used for measuring the axial movement amount of the screw rod or the nut of the ball screw driven by the loading device, so that the problem that the screw rod of the ball screw rotates along the direction of the force in the measuring process to cause error of a measuring result is solved, and the nut or the screw rod of the ball screw is limited to rotate relatively through the loading device, so that the measuring error is reduced.
Description
Technical Field
The invention belongs to the field of ball screw detection devices, and particularly relates to a ball screw axial clearance testing device.
Background
The ball screw comprises a nut, a screw rod and a plurality of balls arranged between the nut and the screw rod; ball screw play refers to the movement amount of one of the nut and the screw rod when the ball screw is not installed, and then the other of the nut and the screw rod, which is not fixed, moves radially or axially; according to the moving direction, radial play and axial play can be classified; the size of the play during operation has influence on the service life, temperature rise, noise, vibration and other performances of the ball screw.
At present, no special axial clearance measuring device for a ball screw is arranged on the market, the driven axial clearance measuring instrument cannot meet the measurement requirement, the screw is required to be unable to rotate in the measuring process, but the axial clearance measuring instrument on the market does not restrict the screw from rotating in the circumferential direction, the screw which cannot rotate along with the direction of force due to the ball screw is prevented from rotating in the axial force applying process, the measuring result is incorrect, the repeatability is poor, and the accurate axial clearance cannot be obtained.
Disclosure of Invention
The invention aims to provide a ball screw axial clearance testing device, which is characterized in that a loading device is used for limiting the relative rotation of a nut or a screw rod of a ball screw, so that the measurement error is reduced.
The technical aim of the invention is realized by the following technical scheme:
An axial play testing device of a ball screw comprises
The ball screw mounting seat is used for fixing a nut or a screw rod of the ball screw;
the loading device is abutted against the screw rod or the nut of the ball screw rod to limit the screw rod or the nut of the ball screw rod to rotate and drive the screw rod or the nut of the ball screw rod to axially move;
And the measuring device is used for measuring the axial movement amount of the screw rod or the nut of the ball screw driven by the loading device.
Preferably, the loading device comprises
The loading arm is used for abutting against a screw rod or a nut of the ball screw;
And the driving assembly is used for driving the loading arm to axially move so as to drive the screw rod or the nut of the ball screw to axially move.
Preferably, the drive assembly comprises
The two brackets are axially arranged at intervals along the ball screw;
The roll shaft is positioned between the two brackets and penetrates through the two brackets, and the loading arm is arranged on the roll shaft and is in sliding connection with the roll shaft;
The two supports are respectively provided with a loading piece, each loading piece comprises a first loading rod and a second loading rod which is arranged at an included angle with the first loading rod, the joint of the first loading rod and the second loading rod is rotationally connected with the support, the first loading rod which is close to the support is defined, the second loading rod which is far away from the support is defined, and the first loading rod is abutted to the roll shaft;
And one or more loading blocks are arranged on the two second loading rods, and the gravity of the loading blocks is converted into pushing the roll shafts through the loading pieces.
Preferably, the roller shaft is provided with a limiting piece, and the limiting piece is used for limiting the rotation amount of the roller shaft so that the loading arm is aligned with the screw rod or the nut of the ball screw.
Preferably, the roll shaft is further provided with a plurality of locking nuts, and the locking nuts are sleeved on the roll shaft and located at two axial ends of the loading arm so as to limit the loading arm to slide.
Preferably, a linear bearing is further arranged at the joint of the support and the roll shaft so as to reduce friction force between the support and the roll shaft.
Preferably, the two brackets are both rotatably connected with a cam, one radial end of the cam is abutted against one side of the first loading rod, which is close to the brackets, and the cam is rotated to control the first loading arm to be abutted against or away from the roll shaft.
Preferably, the ball screw mounting seat comprises a fixing seat and a connecting piece arranged on the fixing seat, wherein a first through hole is formed in the connecting piece and used for penetrating a nut or a screw rod of the ball screw.
Preferably, a locking device is further arranged on one side of the connecting piece, and is used for enabling the first through hole to be in interference fit with the nut or the screw rod of the ball screw, so that the movement and the rotation of the nut or the screw rod of the ball screw are limited.
Preferably, the device further comprises a base, and the ball screw mounting seat, the loading device and the measuring device are fixedly mounted on the base.
The invention has the following beneficial effects:
1. the ball screw mounting seat is arranged to fix the screw nut or screw rod of the ball screw, and the loading device is used for limiting the screw rod or the screw nut of the ball screw to rotate, so that the screw rod or the screw nut of the ball screw is prevented from rotating relatively, and further measurement errors are reduced;
2. through setting up drive assembly and cam, the loading piece converts the gravity of loading piece into the power that promotes the axial displacement of roller, and operating personnel only need control the cam and rotate in order to make the butt or keep away from the roller of loading piece to control the roller slip direction, easy operation, comparatively laborsaving;
3. Through setting up loading arm and roller sliding connection for loading arm can be used for the ball screw of different sizes of butt, and application scope is wide.
Drawings
Fig. 1 is a schematic structural view of a ball screw axial play testing device in the first embodiment;
FIG. 2 is a schematic top view of a ball screw axial play testing device according to the first embodiment;
FIG. 3 is a schematic cross-sectional view at A-A of FIG. 2;
FIG. 4 is a schematic cross-sectional view of a ball screw mount and locking device in accordance with the first embodiment;
FIG. 5 is a schematic cross-sectional view at B-B in FIG. 2;
FIG. 6 is a schematic cross-sectional view of a loader and loader block in accordance with the first embodiment;
FIG. 7 is a schematic view of the structure of a loading arm in the first embodiment;
FIG. 8 is an enlarged schematic view at A in FIG. 3;
FIG. 9 is an enlarged schematic view at B in FIG. 5;
FIG. 10 is an enlarged schematic view at C in FIG. 2;
FIG. 11 is an enlarged schematic view at D in FIG. 5;
FIG. 12 is a schematic cross-sectional view of a ball screw, ball screw mount and screw ejector in a second embodiment;
Fig. 13 is a schematic structural view of a screw mandrel in the second embodiment.
In the figure: 1. a ball screw mounting seat; 11. a fixing seat; 12. a connecting piece; 121. a first perforation; 122. a notch; 123. a second perforation; 124. a first screw hole; 2. a loading device; 21. a loading arm; 211. a second through hole; 212. a second screw hole; 213. a third screw hole; 214. a screw mandrel; 2141. a clamping block; 2142. a protrusion; 22. a bracket; 221. a chassis; 2211. a first through hole; 222. a cross plate; 223. a flange; 23. a roll shaft; 231. a preformed hole; 232. a lock nut; 2321. a fourth screw hole; 24. a loading member; 241. a first loading rod; 2411. a loading head; 242. a second loading rod; 2421. a limit rod; 25. loading a block; 251. a third perforation; 3. a measuring device; 4. a base; 5. a ball screw; 51. a clamping groove; 6. a locking device; 61. a screw; 62. a first handle; 7. a linear bearing; 8. a limiting piece; 81. positioning pins; 82. a baffle; 91. a cam; 911. a cylinder; 912. a key slot; 92. a grip; 921. and (5) flat keys.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
Example 1
The embodiment discloses a ball screw axial play testing device, which is shown in combination with fig. 1 and 2 and comprises a ball screw mounting seat 1, a loading device 2, a measuring device 3 and a base 4, wherein the ball screw mounting seat 1 is used for fixing a nut or a screw of a ball screw 5; the loading device 2 is abutted against the screw rod or the nut of the ball screw rod 5 to limit the screw rod or the nut of the ball screw rod 5 to rotate and drive the screw rod or the nut of the ball screw rod 5 to axially move; the measuring device 3 is used for measuring the axial movement amount of a screw rod or a nut of the ball screw 5 driven by the loading device 2; the ball screw mounting seat 1, the loading device 2 and the measuring device 3 are fixedly arranged on the base 4.
As shown in fig. 1 and 3, the ball screw mounting seat 1 comprises a fixed seat 11 and a connecting piece 12 arranged on the fixed seat 11, the fixed seat 11 and the connecting piece 12 are integrally formed, and the fixed seat 11 and the base 4 are fixedly connected through penetrating screws so as to limit the movement of the ball screw mounting seat 1; the connecting piece 12 is provided with a first through hole 121, the first through hole 121 is used for penetrating a nut or a screw rod of the ball screw 5, and in this embodiment, the first through hole 121 is used for penetrating the nut of the ball screw 5.
As shown in fig. 3 and fig. 4, a gap 122 is formed at one radial end of the first through hole 121 and is communicated with a side wall or top of the connecting piece 12, in this embodiment, the first through hole 121 is formed with a gap 122 at a radial side facing the top of the connecting piece 12, but not limited thereto; a second through hole 123 communicated with one side wall of the notch 122 is formed in one side wall of the connecting piece 12, a first screw hole 124 communicated with the second through hole 123 is formed in the other side wall of the notch 122, the second through hole 123 is communicated with the side wall of the connecting piece 12, the first screw hole 124 is communicated with the other side wall of the connecting piece 12, and the diameters of the second through hole 123 and the first screw hole 124 are equal; the notch 122 is provided with the locking device 6, the locking device 6 includes screw 61 and first handle 62, second perforation 123 and first screw 124 are worn to establish in proper order to screw 61, the diameter of one side that screw 61 is located outside the second perforation 123 is greater than the diameter of second perforation 123 so that screw 61 one side butt is on the lateral wall of connecting piece 12, first handle 62 sets up in one side that screw 61 kept away from connecting piece 12, the operating personnel holds first handle 62 and rotates screw 61 in order to control notch 122 and open or close, in order to adjust the aperture size of first perforation 121, thereby control first perforation 121 and the nut separation or interference fit of ball screw 5, and then the nut of restriction ball screw 5 removes and rotates.
As shown in fig. 1 and 5, the loading device 2 is disposed on the base 4 and located at one side of the ball screw mounting seat 1, the loading device 2 includes a loading arm 21 and a driving component, where the loading arm 21 is used to abut against a screw or a nut of the ball screw 5, and in this embodiment, the loading arm 21 is used to abut against the screw of the ball screw 5 to avoid the screw of the ball screw 5 from rotating; the driving component is used for driving the loading arm 21 to axially move, so as to drive the screw rod or the nut of the ball screw 5 to axially move.
The driving assembly comprises a bracket 22, a roll shaft 23, a loading piece 24 and a loading block 25, wherein the bracket 22 is axially provided with two brackets at intervals along the ball screw 5, the bracket 22 comprises a bottom frame 221 and a transverse plate 222 arranged on the bottom frame 221, the bottom frame 221 and the transverse plate 222 are connected through screw threads, the bottom of the bottom frame 221 extends outwards at one side far away from the other bracket 22 to form a flange 223, the flange 223 is abutted with the base 4 and is fixedly connected with the base 4 through penetrating screws, so that the bracket 22 is fixed on the base 4; the roll shafts 23 are positioned between the two brackets 22 and penetrate through the two brackets 22, a first through hole 2211 for the roll shafts 23 to penetrate through is formed in the corresponding chassis 221, and the roll shafts 23 penetrate through the first through hole 2211 to be connected with the brackets 22 in a sliding manner; the two brackets 22 are respectively provided with a loading piece 24, the loading piece 24 is positioned at one side of one bracket 22 far away from the other bracket 22, the loading piece 24 comprises a first loading rod 241 and a second loading rod 242 which is arranged at an included angle with the first loading rod 241, in the embodiment, the included angle is 90 degrees, but the invention is not limited to the embodiment, the connection part of the first loading rod 241 and the second loading rod 242 is rotationally connected with the transverse plate 222, a first loading rod 241 which is close to the bracket 22 is defined, a second loading rod 242 which is far away from the bracket 22 is defined, and the first loading rod 241 is abutted against the roll shaft 23; one or more loading blocks 25 are disposed on each of the two second loading rods 242, and the gravity of the loading blocks 25 is converted into a thrust force for pushing the roller shaft 23 to move axially through the loading member 24, in this embodiment, one loading block 25 is mounted on one second loading rod 242, and two loading blocks 25 are mounted on the other second loading rod 242, but not limited thereto.
As shown in fig. 5 and 6, the first loading rod 241 is further provided with a loading head 2411 in a penetrating manner, and one end of the loading head 2411 abuts against one side of the roller shaft 23, so as to facilitate accurate transmission of thrust; the second loading rod 242 is further provided with a limiting rod 2421 in a penetrating manner, the limiting rod 2421 is perpendicular to the second loading rod 242 and extends towards one side far away from the base 4, and the corresponding loading block 25 is provided with a third penetrating hole 251 for the limiting rod 2421 to penetrate through, so that the loading block 25 is convenient to install and fix on the second loading rod 242.
In order to reduce the friction between the support 22 and the bottom frame 221, the joint of the bottom frame 221 and the roller shaft 23 is further provided with a linear bearing 7, the outer ring of the linear bearing 7 is abutted against the inner side wall of the first through hole 2211, and the inner ring is sleeved on the radial outer side wall of the roller shaft 23, so that the friction between the roller shaft 23 and the bottom frame 221 in relative movement is reduced, and the roller shaft 23 can slide axially conveniently.
As shown in fig. 2 and 7, the loading arm 21 is provided with two second through holes 211 which are respectively positioned at two sides of the ball screw mounting seat 1 and are penetrated by the roller shaft 23, so that the loading arm 21 can axially slide along the roller shaft 23, the inner side wall of the second through hole 211 is provided with a second screw hole 212 which is communicated with the outer side wall of the tail of the loading arm 21, in the embodiment, the second screw hole 212 is positioned at one side of the tail of the loading arm 21 far away from the head of the loading arm 21, and a screw penetrates through the second screw hole 212 and is abutted against the roller shaft 23 so as to limit the rotation of the loading arm 21; the head of the loading arm 21 is abutted to two axial ends of the screw rod of the ball screw 5, in order to improve the screw rod connection strength of the loading arm 21 and the ball screw 5, a third screw hole 213 is formed in the head of the loading arm 21 along the axial direction of the ball screw 5, a screw rod ejector rod 214 is arranged in the third screw hole 213 in a penetrating mode, and threads matched with the third screw hole 213 are formed in the radial outer side wall of the screw rod ejector rod 214.
As shown in fig. 8, a clamping block 2141 is disposed on one side of the screw mandrel 214 near the ball screw 5, and clamping grooves 51 for clamping the clamping block 2141 are disposed at two axial ends of the corresponding ball screw 5.
As shown in fig. 2 and 9, in order to facilitate the loading arm 21 not to rotate when aligning with the screw of the ball screw 5, the roller shaft 23 is provided with a limiting member 8, in this embodiment, the limiting member 8 is preferably a positioning pin 81 provided on the loading arm 21 and a baffle 82 for abutting against the positioning pin 81, the roller shaft 23 is provided with a preformed hole 231 through which the positioning pin 81 passes, and the preformed hole 231 penetrates through two radial ends of the roller shaft 23, and in this embodiment, the preformed hole 231 is located in the middle of the roller shaft 23, but not limited thereto; the positioning pin 81 penetrates through the preformed hole 231 and extends to the outer side of the preformed hole 231; the baffle 82 is disposed on the base 4, in this embodiment, the baffle 82 is in an L-shaped configuration, one side of the baffle is fixedly connected with the base 4 through a screw, the other side of the baffle is perpendicular to the base 4, when the roller 23 rotates, one end of the positioning pin 81 extending out of the preformed hole 231 is abutted against the baffle 82 to stop rotating, so that the rotation angle of the roller 23 is controlled, and the loading arm 21 and the ball screw 5 are convenient to align and connect.
Referring to fig. 2 and 10, in order to further limit the sliding of the loading arm 21, a plurality of locking nuts 232 are further disposed on the roller shaft 23, in this embodiment, the locking nuts 232 are disposed on the roller shaft 23 in a sleeved manner, the four locking nuts 232 are respectively disposed at two axial ends of the tail of the loading arm 21, a plurality of fourth screw holes 2321 are radially formed in the locking nuts 232, and the fourth screw holes 2321 are penetrated through by screws to limit the sliding of the locking nuts 232, so as to limit the sliding of the loading arm 21.
As shown in fig. 5 and 11, the two bottom frames 221 are rotatably connected with a cam 91, the cam 91 is located at an included angle between the flange 223 and the bottom frame 221, and the shape of the cam 91 can be an ellipse, a polygon, an eccentric wheel, or other shapes with different length diameters, so that when the cam 91 rotates, the loading head 2411 can abut against or be far away from the roller shaft 23, in this embodiment, the cam 91 is in an eccentric wheel shape, and one radial end of the cam 91 abuts against one side of the first loading rod 241 close to the bottom frame 221; in order to facilitate the operator to rotate the cam 91, the cam 91 is connected with a holding member 92, in this embodiment, the holding member 92 is preferably a second handle, the cam 91 is provided with a cylinder 911 along the direction of the rotation axis, a key slot 912 is formed on the inner side wall of the cylinder 911, the connection end of the second handle is cylindrically arranged and penetrates through the cylinder 911, and a flat key 921 clamped with the key slot 912 is further arranged on one side wall of the connection end, so that the cam 91 rotates along with the second handle.
Referring to fig. 1 and 2, the measuring device 3 is disposed on the base 4 and located on a side of the loading arm 21 away from the ball screw mounting seat 1, in this embodiment, the measuring device 3 is preferably a dial indicator, and a measuring head of the dial indicator is connected with a screw mandrel 214 to measure an axial relative displacement between the screw and the nut.
When the ball screw mounting seat is used, the first handle 62 is rotated to open the notch 122 of the ball screw mounting seat 1, the ball screw 5 is placed in the first through hole 121, the first handle 62 is rotated reversely to close the notch 122, so that the outer side wall of the nut of the ball screw 5 is in interference fit with the ball screw mounting seat 1, and the movement and rotation of the nut are limited; the loading arm 21 is rotated so that the screw mandrel 214 at the head of the loading arm 21 is abutted against the two axial sides of the screw mandrel of the ball screw 5, the screw at the tail of the loading arm 21 is screwed to limit the movement and rotation of the loading arm 21, and then the locking nut 232 is tightly attached to the two axial sides of the tail of the loading arm 21 and fixed; the second handle on one side of the loading block 25 is rotated to enable the loading head 2411 to abut against the roller shaft 23, so that the roller shaft 23 is pushed to axially move, and the screw rod of the ball screw 5 is pushed to axially move; abutting the measuring head of the dial indicator on one side of a screw mandrel 214 far away from the ball screw 5, and zeroing the reading of the dial indicator; the second handle arranged on one side of the two loading blocks 25 is rotated to enable the loading head 2411 to be abutted against the roller shaft 23, so that the roller shaft 23 is pushed to axially and reversely move, the screw shaft of the ball screw 5 is pushed to axially and reversely move, and a reading is generated after the measuring head of the dial indicator is stretched/compressed, namely the axial play value of the ball screw 5.
Example two
The present embodiment discloses a ball screw axial play testing device, and referring to fig. 12 and 13, the axial length of the screw suitable for the ball screw 5 is greater than the axial length of the nut, and the main difference with the first embodiment is that the ball screw mounting seat 1 is provided with two and spaced arrangement, and the two axial sides of the screw of the ball screw 5 are penetrated and fixed with the first through holes 121 to limit the movement and rotation of the screw of the ball screw 5.
The screw mandrel 214 is provided with a plurality of protrusions 2142 matching with the nuts of the ball screw 5 on one side close to the ball screw 5, the protrusions 2142 are circumferentially arranged, in this embodiment, the protrusions 2142 are three and equidistantly arranged, and the protrusions 2142 are abutted against the nuts of the ball screw 5 after penetrating through the ball screw mounting seat 1 to limit the rotation of the nuts of the ball screw 5, so that the loading device 2 drives the nuts of the ball screw 5 to axially move, and the measuring device 3 (shown in fig. 1) measures the axial movement amount of the nuts of the ball screw 5.
The foregoing examples are provided to facilitate the understanding of the method and the core idea of the invention, and it is to be understood that the present invention is not limited to the specific embodiments and the application scope of the invention according to the idea of the invention.
Claims (5)
1. The axial play testing device of the ball screw comprises a ball screw mounting seat (1) and a nut or screw rod for fixing the ball screw (5);
the loading device (2) is abutted against the screw rod or the nut of the ball screw rod (5) to limit the screw rod or the nut of the ball screw rod (5) to rotate and drive the screw rod or the nut of the ball screw rod (5) to axially move;
the measuring device (3) is used for measuring the axial movement amount of the screw rod or the nut of the ball screw (5) driven by the loading device (2);
The loading device (2) comprises a loading arm (21) for abutting against a screw or nut of the ball screw (5); the driving assembly is used for driving the loading arm (21) to axially move so as to drive a screw rod or a nut of the ball screw (5) to axially move; the driving assembly comprises a bracket (22), and two brackets are axially arranged along the ball screw (5) at intervals; the roll shaft (23) is positioned between the two brackets (22) and penetrates through the two brackets (22), and the loading arm (21) is arranged on the roll shaft (23) and is in sliding connection with the roll shaft (23); the loading piece (24), two support (22) are respectively provided with one, each loading piece comprises a first loading rod (241) and a second loading rod (242) which is arranged at an included angle with the first loading rod (241), the joint of the first loading rod (241) and the second loading rod (242) is rotationally connected with the support (22), the first loading rod (241) which is close to the support (22) is defined, the second loading rod (242) which is far away from the support (22) is arranged, the loading head (2411) is further arranged on the first loading rod (241) in a penetrating mode, and one end of the loading head (2411) is abutted to one side of the roll shaft (23); the loading blocks (25) are respectively provided with one or more second loading rods (242), and the gravity of the loading blocks (25) is converted into the gravity of pushing the roll shafts (23) through the loading pieces (24); the two brackets (22) are rotatably connected with cams (91), the cams (91) are connected with holding pieces (92), one radial end of each cam (91) is abutted against one side of the first loading rod (241) close to the bracket (22), and the cams (91) are rotated to control the loading heads (2411) to be abutted against or far away from the roll shafts (23)
The method is characterized in that: the ball screw comprises a roll shaft (23), wherein a limiting piece (8) is arranged on the roll shaft (23), and the limiting piece (8) is used for limiting the rotation quantity of the roll shaft (23) so as to enable the loading arm (21) to be aligned with a screw rod or a nut of the ball screw (5); the roll shaft (23) is also provided with a plurality of locking nuts (232), and the locking nuts (232) are sleeved on the roll shaft (23) and are positioned at two axial ends of the loading arm (21) so as to limit the loading arm (21) to slide; the head of the loading arm (21) is connected with a screw mandrel (214) in a threaded manner, one side, close to the ball screw (5), of the screw mandrel (214) is provided with a clamping block (2141), and clamping grooves (51) for clamping the clamping block (2141) are formed in two axial ends of the screw of the corresponding ball screw (5).
2. The ball screw axial play testing device according to claim 1, wherein: the connecting part of the bracket (22) and the roll shaft (23) is also provided with a linear bearing (7) so as to reduce the friction force between the bracket (22) and the roll shaft (23).
3. The ball screw axial play testing device according to claim 1, wherein: the ball screw mounting seat (1) comprises a fixing seat (11) and a connecting piece (12) arranged on the fixing seat (11), a first through hole (121) is formed in the connecting piece (12), and the first through hole (121) is used for penetrating a nut or a screw of the ball screw (5).
4. A ball screw axial play testing device according to claim 3, characterized in that: one side of the connecting piece (12) is also provided with a locking device (6) for enabling the first through hole (121) to be in interference fit with a nut or a screw of the ball screw (5), so that the nut or the screw of the ball screw (5) is limited to move and rotate.
5. The ball screw axial play testing device according to claim 1, wherein: the device also comprises a base (4), wherein the ball screw mounting seat (1), the loading device (2) and the measuring device (3) are fixedly arranged on the base (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810800320.3A CN108709483B (en) | 2018-07-19 | 2018-07-19 | Axial play testing device of ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810800320.3A CN108709483B (en) | 2018-07-19 | 2018-07-19 | Axial play testing device of ball screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108709483A CN108709483A (en) | 2018-10-26 |
| CN108709483B true CN108709483B (en) | 2024-04-19 |
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| CN201810800320.3A Active CN108709483B (en) | 2018-07-19 | 2018-07-19 | Axial play testing device of ball screw |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11105604B2 (en) * | 2017-10-26 | 2021-08-31 | Nsk Ltd. | Method and apparatus of measuring axial clearance of ball screw device, and methods of manufacturing ball screw device, vehicle, and mechanical device |
| CN112729062A (en) * | 2020-12-30 | 2021-04-30 | 慈兴集团有限公司 | Ball screw axial clearance measuring device |
| CN114459413A (en) * | 2022-02-10 | 2022-05-10 | 慈兴集团有限公司 | Lead screw comprehensive measurement method |
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