CN113043082A - Numerical control milling cutter end face grinding device and grinding method - Google Patents
Numerical control milling cutter end face grinding device and grinding method Download PDFInfo
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- CN113043082A CN113043082A CN202110314359.6A CN202110314359A CN113043082A CN 113043082 A CN113043082 A CN 113043082A CN 202110314359 A CN202110314359 A CN 202110314359A CN 113043082 A CN113043082 A CN 113043082A
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- 238000000227 grinding Methods 0.000 title claims abstract description 115
- 238000003801 milling Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 67
- 230000006698 induction Effects 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 24
- 238000005259 measurement Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 230000006872 improvement Effects 0.000 description 14
- 230000033001 locomotion Effects 0.000 description 14
- 230000001360 synchronised effect Effects 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/02—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
本发明揭示了一种数控铣刀端面修磨装置，包括基台，设于基台上的第一移动机构、第二移动机构和数控系统，设于第一移动机构上的磨刀组件和测量感应组件，以及设于第二移动机构上的工件装夹组件；磨刀组件在第一移动机构的作用下沿y轴方向移动，用于修磨刀具；工件装夹组件在第二移动机构的作用下沿x轴方向移动，用于夹持刀具；测量感应组件包括用于测量待磨铣刀长度的感应器以及用于定位待磨铣刀角度的侧头角向定位头；数控系统连接第一移动机构，磨刀组件，第二移动机构，工件装夹组件以及测量感应组件，用以协调上述各部件之间的联动运作。本发明实现了对铣刀(包括二刃立铣刀，三刃立铣刀，四刃立铣刀)的高精度数控修磨。
The invention discloses a CNC milling cutter end face grinding device, comprising a base, a first moving mechanism, a second moving mechanism and a numerical control system arranged on the base, a sharpening assembly and a measuring device arranged on the first moving mechanism The induction assembly, and the workpiece clamping assembly arranged on the second moving mechanism; the sharpening assembly moves along the y-axis direction under the action of the first moving mechanism, and is used for grinding the tool; the workpiece clamping assembly is located in the second moving mechanism. It moves along the x-axis direction under the action to clamp the tool; the measuring induction component includes a sensor for measuring the length of the milling cutter to be ground and a side head angular positioning head for locating the angle of the milling cutter to be ground; the numerical control system is connected to the first A moving mechanism, a sharpening assembly, a second moving mechanism, a workpiece clamping assembly and a measuring and sensing assembly are used to coordinate the linkage operation among the above components. The invention realizes high-precision numerical control grinding of milling cutters (including two-blade end mills, three-blade end mills, and four-blade end mills).
Description
Technical Field
The invention belongs to the technical field of end face grinding of four-axis precise numerical control milling cutters, and particularly relates to a device and a method for grinding an end face of a numerical control milling cutter.
Background
The development of modern manufacturing technology has increased the variety and demand for high-precision tools, and the performance requirements for tool products are more and more strict, and domestic manufacturers produce multi-shaft grinding machines in order to replace the low efficiency of manual grinding and obtain tools with higher precision.
Therefore, in order to solve the above technical problems, it is necessary to provide a device and a method for sharpening an end face of a numerically controlled milling cutter.
Disclosure of Invention
The invention aims to provide a device and a method for grinding the end face of a numerical control milling cutter, which realize high-precision numerical control grinding of milling cutters (including a two-edge end milling cutter, a three-edge end milling cutter and a four-edge end milling cutter) by adopting the linkage of four axes, namely an x axis, a y axis, a z axis, a (c) axis and an a axis, so as to solve the problems in the prior art.
In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:
in one embodiment, the numerical control milling cutter end face grinding device comprises a base station, a first moving mechanism, a knife sharpening assembly, a second moving mechanism, a workpiece clamping assembly, a measurement induction assembly and a numerical control system;
the base station is provided with a bearing surface;
the first moving mechanism is arranged on the bearing surface, the knife sharpening assembly is arranged on the first moving mechanism and moves along the y-axis direction under the action of the first moving mechanism, and the knife sharpening assembly comprises a grinding head grinding wheel;
the second moving mechanism is configured on the bearing surface, the workpiece clamping assembly is rotatably arranged on the second moving mechanism and moves along the x-axis direction under the action of the second moving mechanism, and the workpiece clamping assembly comprises a clamp for fixing a milling cutter to be milled and a power device for driving the clamp to rotate so as to adjust the milling angle of the milling cutter to be milled;
the measurement induction assembly is configured on the first moving mechanism and comprises an inductor used for measuring the length of the milling cutter to be milled and a side head angular positioning head used for positioning the angle of the milling cutter to be milled;
and the numerical control system is connected with the first moving mechanism, the knife sharpening assembly, the second moving mechanism, the workpiece clamping assembly and the measurement sensing assembly and is used for coordinating the linkage operation among the parts.
As a further improvement of the present invention, the first moving mechanism includes a first carriage, a first linear guide rail group, a first slider group, and a first driving device, the first carriage is disposed on the bearing surface, the first linear guide rail group is disposed on the first carriage, the first slider group is disposed on the first linear guide rail group, a first mounting plate is provided on the first slider group, and the first driving device is disposed on the first carriage, connected to the first mounting plate, and drives the first mounting plate to move in the y-axis direction.
As a further improvement of the present invention, the first slide seat is further provided with a first sensor group, and the first sensor group is connected to the numerical control system and is used for sensing a moving distance of the sharpening assembly.
As a further improvement of the invention, the knife sharpening assembly comprises a motor, the motor is arranged on the first mounting plate, and an output shaft of the motor is connected with the grinding head grinding wheel.
As a further improvement of the present invention, a first grinding surface, a second grinding surface and a third grinding surface are sequentially distributed on the grinding head grinding wheel from the center to the outside, the first grinding surface and the second grinding surface are arranged to be convex to the surface of the grinding head grinding wheel, and the third grinding surface is configured to be an inclined surface inclined in a direction away from the center of the grinding head grinding wheel.
As a further improvement of the invention, a rotating mechanism is arranged between the workpiece clamping assembly and the second moving mechanism, and the workpiece clamping assembly can rotate around the z axis under the action of the rotating mechanism.
As a further improvement of the present invention, the rotating mechanism includes a speed reducer mounting plate and a speed reducer, the speed reducer mounting plate is fixed to the second moving mechanism, the speed reducer is disposed on the speed reducer mounting plate, and an output shaft of the speed reducer is connected to the workpiece clamping assembly.
As a further improvement of the present invention, the second moving mechanism includes a second slider, a second linear guide group, a second slider group, and a second driving device, the second slider is disposed on the bearing surface, the second linear guide group is disposed on the second slider, the second slider group is disposed on the second linear guide group, a second mounting plate is provided on the second slider group, the second driving device is disposed on the second slider, is connected to the second mounting plate, and drives the second mounting plate to move in the x-axis direction, and the reducer mounting plate is fixed to the second mounting plate.
As a further improvement of the invention, a second inductor group is further arranged on the second slide seat, and the second inductor group is connected with the numerical control system and is used for inducing the moving distance of the workpiece clamping assembly.
In the above technical solution, the first sensor assembly and the second sensor assembly can make the position of the knife sharpening assembly accurately determined relative to the position of the workpiece clamping assembly by generating a control signal for controlling the first driving device and a control signal for controlling the second driving device, respectively.
As a further improvement of the present invention, the workpiece clamping assembly further includes a table that is fixed to the output shaft of the speed reducer and is rotatable in the z-axis direction with respect to the second mounting plate by the speed reducer, and the jig and the power unit are disposed on the table.
As a further improvement of the present invention, the clamp includes a headstock fixed on the worktable, a rotating shaft is axially and movably arranged in the headstock, a collet chuck is fixed on the rotating shaft on one side of the headstock, the collet chuck is used for fixing the milling cutter to be milled, and the power device acts on the rotating shaft to drive an a shaft of the collet chuck to rotate.
As a further improvement of the present invention, a synchronous belt structure is disposed between the power device and the rotating shaft, the synchronous belt structure includes a driving wheel disposed on an output shaft of the power device, a driven wheel disposed on the rotating shaft, and a synchronous belt sleeved on the driving wheel and the driven wheel, and a tooth structure matched with the driving wheel and the driven wheel is disposed on the synchronous belt.
As a further improvement of the invention, a handle structure is also arranged on one side of the rotating shaft, which is provided with the driven wheel, and is used for manually adjusting and fixing the rotating angle of a collet chuck of the milling cutter to be polished.
As a further improvement of the invention, the side head angular positioning head comprises a contact part, the contact part is provided with a flat contact surface, the side head angular positioning head is fixed on the first mounting plate through a side head bracket, the flat contact surface is obliquely arranged at an angle of 45 degrees relative to the horizontal direction, and after the milling cutter to be ground and repaired moves along the positive direction of the X axis and touches the side head angular positioning head, the collet chuck rotates around the a axis for a certain angle and then moves again to touch the side head angular positioning head, and then the zero point of the a axis of the milling cutter is determined.
As a further improvement of the invention, the numerical control system of the device adopts VB program design and ZDevelop debugging, the motion of each shaft of the machine tool is controlled by the connection of the motion control card, and a human-computer interaction interface is provided for grinding a corresponding tool by the numerical control tool grinding machine.
An embodiment provides a grinding method of the numerical control milling cutter end face grinding device, which comprises the following steps:
the numerical control system automatically adjusts the position of the milling cutter to be milled and the zero point of the a axis according to the length and angle information of the milling cutter to be milled, which is fed back by the measuring induction assembly;
and controlling the grinding wheel of the grinding head to rotate to grind the cutter face and the cutting groove of the milling cutter to be ground, and adjusting the relative position of the workpiece clamping assembly and the cutter grinding assembly in real time according to different grinding positions in the grinding process.
Compared with the prior art, the device has the advantages that four shafts, namely the x shaft, the y shaft, the z (c) shaft and the a shaft, are linked, the ZDevelop is debugged by adopting VB (visual basic) program design, and the motion of each shaft of a machine tool is controlled through the connection of the motion control card, so that the high-precision numerical control grinding of milling cutters (including two-edge end milling cutters, three-edge end milling cutters and four-edge end milling cutters) is realized, meanwhile, a human-computer interaction interface is provided for the corresponding cutter grinding of the numerical control cutter grinding machine, and the operation of a user is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a perspective view of a device for sharpening an end face of a numerically controlled milling cutter according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a first movement mechanism according to an embodiment of the present application;
FIG. 3 is a schematic view of a sharpening assembly according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a second moving mechanism according to an embodiment of the present application;
FIG. 5 is a first perspective view of a workpiece clamping assembly and a rotation mechanism in accordance with one embodiment of the present application;
fig. 6 is a second perspective view of the workpiece clamping assembly and the rotating mechanism according to an embodiment of the present disclosure.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
It should be noted that, when the workpiece is not positioned in space, there are six degrees of freedom, three linear displacement degrees of freedom X \ Y \ Z and three rotational displacement degrees of freedom a \ B \ C corresponding to the linear displacement degrees of freedom X \ Y \ Z. The six degrees of freedom usually use the Cartesian rectangular coordinate system X \ Y \ Z to express three linear axes, and use the corresponding A \ B \ C to express three rotation axes. The specific directions of the x-axis, y-axis, and z-axis in this document are defined as the directions labeled in fig. 1.
Referring to fig. 1, an embodiment of the present application provides a device for grinding an end face of a numerically controlled milling cutter, which adopts an arc gantry structure and has good rigidity. The numerical control milling cutter end face grinding device comprises a base station 1, a first moving mechanism 2, a knife sharpening component 3, a second moving mechanism 4, a workpiece clamping component 5, a measurement induction component 6 and a numerical control system. Wherein, the base station 1 has a carrying surface 11; the first moving mechanism 2 is arranged on the bearing surface 11, the knife sharpening assembly 3 is arranged on the first moving mechanism 2 and moves along the y-axis direction under the action of the first moving mechanism 2; the second moving mechanism 4 is configured on the bearing surface 11, the workpiece clamping assembly 5 is rotatably arranged on the second moving mechanism 4 and moves along the x-axis direction under the action of the second moving mechanism 4; the measuring and sensing assembly 6 is arranged on the first moving mechanism 2 and comprises a sensor 61 for measuring the length of the milling cutter to be milled and a lateral head angular positioning head 62 (shown in reference to fig. 2) for positioning the angle of the milling cutter to be milled; the numerical control system is connected with the first moving mechanism 2, the knife sharpening component 3, the second moving mechanism 4, the workpiece clamping component 5 and the measurement induction component 6, and is used for coordinating the linkage operation among the components.
Referring to fig. 2, the first moving mechanism 2 includes a first slider 21, a first linear guide 22, a first slider group 23, and a first driving device 24, the first slider 21 is disposed on the carrying surface 11, the first linear guide 22 is disposed on the first slider 21, the first slider group 23 is disposed on the first linear guide 22, the first linear guide 22 cooperates with the first slider group 23 to enable the first slider group 23 to move linearly along the y-axis, a first mounting plate 231 is disposed on the first slider group 23, and the first driving device 24 is disposed on the first slider 21 and connected to the first mounting plate 231 to drive the first mounting plate 231 to move in the y-axis direction.
Still be provided with first inductor group on the first slide 21, it is concrete, y axle inductive switch board 211 is equipped with to the first slide 21 side for install first inductor group, and numerical control system is connected to first inductor group for the displacement of response sharpening component 3.
The first driving device 24 is disposed on the first sliding seat 21 through a bearing seat, the first driving device 24 may be a lead screw stepping motor, a nut seat is disposed on a lead screw, the center of the lower portion of the first mounting plate 231 is connected to the nut seat, and the nut seat is matched with the lead screw to enable the first mounting plate 231 to move linearly along the y-axis along with the rotation of the lead screw.
Still be provided with side head angular positioning head 62 on first mounting panel 231, side head angular positioning head 62 includes a contact site 621, contact site 621 has a straight contact surface, side head angular positioning head 62 is fixed in on first mounting panel 231 through side head support 63, and straight contact surface is 45 degrees angle slope settings for the horizontal direction, through treating that the milling cutter is repaiied and moving along X axle positive direction and bumping behind touching side head angular positioning head 62, the collet chuck is removed once more after the rotatory certain angle of a axle and is touched the zero point of milling cutter a axle behind side head angular positioning head 62.
Referring to fig. 3, the sharpening assembly 3 comprises a motor 31 and a grinding wheel 32, the motor 31 is disposed on the first mounting plate 231, and an output shaft of the motor 31 is connected with the grinding wheel 32; a first grinding surface 321, a second grinding surface 322 and a third grinding surface 323 are sequentially distributed on the grinding head grinding wheel 32 from the center to the outside, the first grinding surface 321 and the second grinding surface 322 are arranged to protrude out of the surface of the grinding head grinding wheel, the third grinding surface 323 is configured to be an inclined surface inclined along the direction far away from the center of the grinding head grinding wheel 3, wherein the first grinding surface 321 is used for grinding a second rear cutter face of the milling cutter, the third grinding surface 323 is used for grinding a cutter slot and a front cutter face, and the second grinding surface 322 is used for grinding the first rear cutter face.
Referring to fig. 4, the second moving mechanism 4 is disposed on the base 1, the second moving mechanism 4 includes a second slider 41, a second linear guide group 42, a second slider group 43, and a second driving device 44, the second slider 41 is disposed on the carrying surface 11, the second linear guide group 42 is disposed on the second slider 41, the second slider group 43 is disposed on the second linear guide group 42, the second linear guide group 42 is used in cooperation with the second slider group 43 so that the second slider group 43 can linearly move along the x-axis, the second slider group 43 is provided with a second mounting plate 431, the second driving device 44 is disposed on the second slider 41 and connected to the second mounting plate 431, and the second mounting plate 431 is driven to move in the x-axis direction.
The second slide 41 is further provided with a second sensor group, specifically, an x-axis induction switch board 411 is installed on the side surface of the second slide 41 and used for installing the second sensor group, and the second sensor group is connected with the numerical control system and used for sensing the moving distance of the workpiece clamping assembly 5.
In the above technical solution, the first sensor assembly and the second sensor assembly can make the position of the knife sharpening assembly 3 relative to the position of the workpiece clamping assembly 5 accurately determined by generating a control signal for controlling the first driving device 24 and a control signal for controlling the second driving device 44, respectively.
The second driving device 44 is disposed on the second sliding seat 41 through a bearing seat, the second driving device 44 can also be a lead screw stepping motor, a nut seat is disposed on a lead screw, the lower center of the second mounting plate 431 is connected to the nut seat, and the nut seat is matched with the lead screw to enable the second mounting plate 431 to move linearly along the x-axis along with the rotation of the lead screw.
Referring to fig. 4, 5 and 6, a rotating mechanism 7 is arranged between the workpiece clamping assembly 5 and the second moving mechanism 4, and the workpiece clamping assembly 5 can rotate around the z-axis under the action of the rotating mechanism 7.
The rotating mechanism 7 includes a reducer mounting plate 71 and a reducer 72, the reducer mounting plate 71 is fixed to the second mounting plate 431 of the second moving mechanism 4, the reducer 72 is disposed on the reducer mounting plate 71, and an output shaft thereof is connected to the workpiece clamping unit 5.
The workpiece clamping assembly 5 comprises a workbench 51, a clamp 52 arranged on the workbench 51 and used for fixing the milling cutter to be milled, and a power device 53 arranged on the workbench 51 and used for driving the clamp 52 to rotate so as to adjust the grinding angle of the milling cutter to be milled.
The table 51 is fixed to an output shaft of the speed reducer 72, and is rotatable in the z-axis direction with respect to the second mounting plate 431 by the speed reducer 71, and the jig 52 and the power unit 53 are disposed on the table 51.
The clamp 52 comprises a headstock base 521 fixed on the worktable 51, a rotating shaft 522 is axially and movably arranged in the headstock base 521, a collet 523 is fixed on one side of the headstock base 521 on the rotating shaft 522, the collet 523 is used for fixing a milling cutter to be milled, and the power device 53 acts on the rotating shaft 522 to drive the collet 523a to rotate.
A synchronous belt structure 54 is arranged between the power device 53 and the rotating shaft 522, the synchronous belt structure 54 comprises a driving wheel 541 arranged on an output shaft of the power device 53, a driven wheel 542 arranged on the rotating shaft 522, and a synchronous belt 543 sleeved on the driving wheel 541 and the driven wheel 542, wherein a tooth structure matched with the driving wheel 541 and the driven wheel 542 is arranged on the synchronous belt 543, and the driving wheel 541 is driven to rotate through the transmission of the synchronous belt 543, so that the collet 523 can rotate around an a axis.
The handle structure 55 is further installed on one side of the rotating shaft 522, which is provided with the driven wheel 542, and is used for manually adjusting and fixing the rotating angle of the collet 523 of the milling cutter to be polished.
The numerical control system adopts VB program design, ZDevelop is debugged, the motion of each shaft of the machine tool is controlled through the connection of a motion control card, and meanwhile, a human-computer interaction interface is provided for the numerical control tool grinding machine to grind corresponding tools.
An embodiment of the application provides a grinding method of the numerical control milling cutter end face grinding device, which comprises the following steps:
the numerical control system automatically adjusts the position of the milling cutter to be milled and the zero point of the a axis according to the length and angle information of the milling cutter to be milled, which is fed back by the measuring induction assembly;
and controlling the grinding wheel of the grinding head to rotate to grind the cutter face and the cutting groove of the milling cutter to be ground, and adjusting the relative position of the workpiece clamping assembly and the cutter grinding assembly in real time according to different grinding positions in the grinding process.
The application discloses numerical control milling cutter terminal surface grinding device, the motion principle of its each part is:
the movement of collet 523 includes movement along the x-axis, rotation about the a-axis, and rotation about the z-axis. The linear motion of the collet 523 along the x-axis direction is driven by the second driving device 44 to make the nut seat linearly move along the x-axis along with the rotation of the lead screw; the rotation of the collet 523 around the a axis is realized by driving the synchronous belt 543 to rotate the collet 523 through the rotation of the power device 53; the rotation of the collet 523 about the z-axis is achieved by the rotation of the table 51 driven by the reducer 71.
The linear motion of the grinding wheel head grinding wheel 32 in the y-axis direction is realized by rotating the first driving device 24 to move the nut holder along with the rotation of the lead screw. The rotation of the grinding wheel head 32 during grinding is driven by the rotation of the motor 31.
The rotation of the milling cutter to be sharpened around the a-axis is realized by the synchronous belt driven by the power device 53.
The utility model provides a numerical control milling cutter terminal surface grinding device, the collet chuck can pass through the guide rail, the slide, the slider removes along x axle direction, remove appointed position during the grinding, a workstation is connected to the collet chuck below, the speed reducer rotates and drives the workstation rotatory round the z axle, thereby make collet chuck and cutter rotatory corresponding angle respectively round the z axle make the emery wheel cut into the work piece respectively and realize the rake face respectively, the grinding of first back knife face and second back knife face, each cutting edge and the knife face that can make milling cutter through the rotation of an axle all obtain processing.
The machine tool working area is also provided with a side head support used for installing a sensor, the length of the cutter is measured before each processing, the data is transmitted to a numerical control system, and preparation is made for the next cutter angle measurement.
Compared with the prior art, the device has the advantages that four shafts, namely the x shaft, the y shaft, the z (c) shaft and the a shaft, are linked, the ZDevelop is debugged by adopting VB (visual basic) program design, and the motion of each shaft of a machine tool is controlled through the connection of the motion control card, so that the high-precision numerical control grinding of milling cutters (including two-edge end milling cutters, three-edge end milling cutters and four-edge end milling cutters) is realized, meanwhile, a human-computer interaction interface is provided for the corresponding cutter grinding of the numerical control cutter grinding machine, and the operation of a user is facilitated.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A numerical control milling cutter end face grinding device is characterized by comprising a base station, a first moving mechanism, a grinding component, a second moving mechanism, a workpiece clamping component, a measurement induction component and a numerical control system;
the base station is provided with a bearing surface;
the first moving mechanism is arranged on the bearing surface, the knife sharpening assembly is arranged on the first moving mechanism and moves along the y-axis direction under the action of the first moving mechanism, and the knife sharpening assembly comprises a grinding head grinding wheel;
the second moving mechanism is configured on the bearing surface, the workpiece clamping assembly is rotatably arranged on the second moving mechanism and moves along the x-axis direction under the action of the second moving mechanism, and the workpiece clamping assembly comprises a clamp for fixing a milling cutter to be milled and a power device for driving the clamp to rotate so as to adjust the milling angle of the milling cutter to be milled;
the measurement induction assembly is configured on the first moving mechanism and comprises an inductor used for measuring the length of the milling cutter to be milled and a side head angular positioning head used for positioning the angle of the milling cutter to be milled;
and the numerical control system is connected with the first moving mechanism, the knife sharpening assembly, the second moving mechanism, the workpiece clamping assembly and the measurement sensing assembly and is used for coordinating the linkage operation among the parts.
2. The apparatus for grinding an end face of a numerically controlled milling cutter according to claim 1, wherein the first moving mechanism includes a first carriage, a first linear guide rail group, a first slider group, and a first driving device, the first carriage is disposed on the bearing surface, the first linear guide rail group is disposed on the first carriage, the first slider group is disposed on the first linear guide rail group, a first mounting plate is provided on the first slider group, and the first driving device is disposed on the first carriage, connected to the first mounting plate, and drives the first mounting plate to move in the y-axis direction.
3. The apparatus for grinding an end face of a milling cutter according to claim 2, wherein the sharpening assembly comprises a motor disposed on the first mounting plate, an output shaft of the motor being connected to the grinding wheel.
4. The numerically controlled milling cutter end face grinding device according to claim 1, wherein a first grinding surface, a second grinding surface and a third grinding surface are sequentially distributed on the grinding head grinding wheel from the center to the outside, the first grinding surface and the second grinding surface are arranged to be convex to the surface of the grinding head grinding wheel, and the third grinding surface is configured to be an inclined surface inclined in a direction away from the center of the grinding head grinding wheel.
5. The grinding device for the end face of the numerical control milling cutter according to claim 1, wherein a rotating mechanism is arranged between the workpiece clamping assembly and the second moving mechanism, and the workpiece clamping assembly can rotate around a z-axis under the action of the rotating mechanism.
6. The apparatus for grinding an end face of a numerically controlled milling cutter according to claim 5, wherein the rotating mechanism includes a speed reducer mounting plate fixed to the second moving mechanism, and a speed reducer disposed on the speed reducer mounting plate and having an output shaft connected to the workpiece clamping unit.
7. The apparatus for grinding an end face of a numerically controlled milling cutter according to claim 6, wherein the second moving mechanism includes a second carriage, a second linear guide rail group, a second slider group, and a second driving device, the second carriage being disposed on the bearing surface, the second linear guide rail group being disposed on the second carriage, the second slider group being disposed on the second linear guide rail group, the second slider group being provided with a second mounting plate, the second driving device being disposed on the second carriage and connected to the second mounting plate, the second mounting plate being driven to move in the x-axis direction, and the reducer mounting plate being fixed to the second mounting plate.
8. The apparatus for grinding an end face of a numerically controlled milling cutter according to claim 7, wherein the workpiece holding member further includes a table fixed to an output shaft of the speed reducer and rotatable in the z-axis direction with respect to the second mounting plate by the speed reducer, and the jig and the power unit are disposed on the table.
9. The end face grinding device for the numerical control milling cutter according to claim 8, wherein the clamp comprises a headstock fixed on the worktable, a rotating shaft is axially and movably arranged in the headstock, a collet chuck is fixed on one side of the headstock and used for fixing the milling cutter to be milled, and the power device acts on the rotating shaft to drive an a shaft of the collet chuck to rotate.
10. The method for grinding an end face of a numerically controlled milling cutter according to any one of claims 1 to 9, comprising:
the numerical control system automatically adjusts the position of the milling cutter to be milled and the zero point of the a axis according to the length and angle information of the milling cutter to be milled, which is fed back by the measuring induction assembly;
and controlling the grinding wheel of the grinding head to rotate to grind the cutter face and the cutting groove of the milling cutter to be ground, and adjusting the relative position of the workpiece clamping assembly and the cutter grinding assembly in real time according to different grinding positions in the grinding process.
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| CN202110314359.6A CN113043082B (en) | 2021-03-24 | 2021-03-24 | End face grinding device and method for numerical control milling cutter |
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| CN113043082B (en) | 2022-07-08 |
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