CN113043082B - End face grinding device and method for numerical control milling cutter - Google Patents

Abstract

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

CNC milling cutter end face grinding device and grinding method

technical field

The invention belongs to the technical field of four-axis precision numerical control milling cutter end face grinding, and particularly relates to a numerical control milling cutter end face grinding device and a grinding method.

Background technique

With the development of modern manufacturing technology, the variety and demand for high-precision knives are increasing, and the performance requirements for knives are becoming more and more strict. In order to replace the low efficiency of manual grinding and obtain higher-precision knives, domestic manufacturers produce A multi-axis grinder has been developed, but the multi-axis grinder in the prior art generally has a low product grade and poor accuracy and stability, which cannot meet the customer's requirements for using high-precision tools.

Therefore, in view of the above technical problems, it is necessary to provide a grinding device and a grinding method for the end face of a numerically controlled milling cutter.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a CNC milling cutter end face grinding device and grinding method, which adopts the linkage of four axes, namely x axis, y axis, z (c) axis, and a axis, to realize the High-precision CNC grinding of end mills, three-blade end mills, four-blade end mills) to solve the problems in the prior art.

In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

In one embodiment, a CNC milling cutter end face grinding device is provided, including a base, a first moving mechanism, a sharpening assembly, a second moving mechanism, a workpiece clamping assembly, a measurement sensing assembly, and a numerical control system;

the base has a bearing surface;

The first moving mechanism is arranged on the bearing surface, the 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 sharpening assembly is arranged on the first moving mechanism. The knife assembly includes a grinding wheel;

The second moving mechanism is arranged 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, The workpiece clamping assembly includes a clamp for fixing the milling cutter to be ground and a power device for driving the clamp to rotate to adjust the grinding angle of the milling cutter to be ground;

a measurement sensing assembly, configured on the first moving mechanism, including 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 with the first moving mechanism, the knife sharpening assembly, the second moving mechanism, the workpiece clamping assembly and the measuring and sensing assembly, so as to coordinate the linkage operation among the above components.

As a further improvement of the present invention, the first moving mechanism includes a first sliding seat, a first linear guide rail group, a first sliding block group and a first driving device, and the first sliding seat is arranged on the bearing surface , the first linear guide rail group is arranged on the first sliding seat, the first slider group is arranged on the first linear guide rail group, and the first slider group is arranged on the There is a first mounting plate, the first driving device is disposed on the first sliding seat and 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 sliding seat is further provided with a first sensor group, and the first sensor group is connected to the numerical control system for sensing the moving distance of the sharpening assembly.

As a further improvement of the present invention, the sharpening assembly includes a motor, the motor is configured on the first mounting plate, and an output shaft of the motor is connected to 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 wheel from the center to the outside, and the first grinding surface and the second grinding surface are The grinding surface is provided protruding from the surface of the grinding head grinding wheel, and the third grinding grinding surface is configured as an inclined surface inclined in a direction away from the center of the grinding head grinding wheel.

As a further improvement of the present invention, a rotation mechanism is provided 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 rotation mechanism.

As a further improvement of the present invention, the rotating mechanism includes a reducer mounting plate and a reducer, the reducer mounting plate is fixed on the second moving mechanism, and the reducer is arranged on the reducer mounting plate , the output shaft of which is connected to the workpiece clamping assembly.

As a further improvement of the present invention, the second moving mechanism includes a second sliding seat, a second linear guide rail group, a second sliding block group and a second driving device, and the second sliding seat is arranged on the bearing surface , the second linear guide rail group is arranged on the second sliding seat, the second slider group is arranged on the second linear guide rail group, and the second slider group is provided with a second an installation plate, the second drive device is arranged on the second sliding seat and connected to the second installation plate, drives the second installation plate to move in the x-axis direction, and the reducer installation plate is fixed on the second mounting plate.

As a further improvement of the present invention, a second sensor group is further provided on the second sliding seat, and the second sensor group is connected to the numerical control system for sensing the moving distance of the workpiece clamping assembly.

In the above technical solution, the first sensor assembly and the second sensor assembly respectively generate a control signal for controlling the first driving device and a control signal for controlling the second driving device, so that the position of the sharpening assembly can be adjusted. The position of the workpiece clamping assembly is precisely determined.

As a further improvement of the present invention, the workpiece clamping assembly further includes a worktable, the worktable is fixed on the output shaft of the reducer, and can be opposed to the second reducer under the action of the reducer. The mounting plate is rotated in the z-axis direction, and the jig and the power device are arranged on the table.

As a further improvement of the present invention, the fixture includes a headstock seat fixed on the worktable, a rotating shaft is axially movably arranged in the headstock seat, and a rotating shaft is fixed on one side of the headstock seat. The collet is used to fix the milling cutter to be ground, and the power device acts on the rotating shaft to drive the a-axis of the collet to rotate.

As a further improvement of the present invention, a timing belt structure is arranged between the power device and the rotating shaft, and the timing belt structure includes a driving wheel arranged on the output shaft of the power device, and a slave wheel arranged on the rotating shaft. A driving wheel and a synchronous belt sleeved on the driving wheel and the driven wheel, the synchronous belt is provided with a meshing tooth structure matched with the driving wheel and the driven wheel.

As a further improvement of the present invention, a handle structure is also installed on one side of the rotating shaft provided with the driven wheel, which is used to manually adjust the rotation angle of the collet for fixing the milling cutter to be sharpened.

As a further improvement of the present invention, the side head angle positioning head includes a contact portion, the contact portion has a flat contact surface, and the side head angle positioning head is fixed on the first mounting plate through a side head bracket , and the flat contact surface is inclined at an angle of 45 degrees relative to the horizontal direction. After the milling cutter to be ground moves along the positive direction of the X-axis and touches the angular positioning head of the side head, the collet rotates around the a-axis for a certain amount. After the angle, move it again to touch the angular positioning head of the side head and determine the zero point of the a-axis of the milling cutter.

As a further improvement of the present invention, the numerical control system of the device adopts VB program design, ZDevelop is used for debugging, and the movement of each axis of the machine tool is controlled through the motion control card connection, and at the same time, a man-machine interface is provided for the numerical control tool grinder to grind corresponding tools. .

An embodiment provides a grinding method for the above-mentioned CNC milling cutter end surface grinding device, including:

The numerical control system automatically adjusts the position of the milling cutter to be ground and the zero point of the a-axis according to the length and angle information of the milling cutter to be ground fed back by the measuring induction component;

Control the rotation of the grinding wheel to grind the face and groove of the milling cutter to be ground, and adjust the relative position of the workpiece clamping assembly and the sharpening assembly in real time according to the different grinding parts during the grinding process.

Compared with the prior art, the present invention has the advantage of providing a high-precision milling cutter grinding device. VB program design, ZDevelop debugging, through the motion control card connection to control the movement of each axis of the machine tool, to achieve high-precision CNC repair of milling cutters (including two-blade end mills, three-blade end mills, and four-blade end mills). At the same time, it provides a man-machine interface for the CNC tool grinder to grind the corresponding tools, which is convenient for users to operate.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments described in this application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a three-dimensional structural view of a CNC milling cutter end face grinding device in an embodiment of the present application;

2 is a schematic structural diagram of a first moving mechanism in an embodiment of the present application;

3 is a schematic structural diagram of a sharpening assembly in an embodiment of the present application;

4 is a schematic structural diagram of a second moving mechanism in an embodiment of the present application;

5 is a perspective structural view of a workpiece clamping assembly and a rotating mechanism in an embodiment of the present application from a first perspective;

FIG. 6 is a perspective structural diagram of a workpiece clamping assembly and a rotating mechanism from a second perspective according to an embodiment of the present application.

Detailed ways

The present invention will be described in detail below with reference to the various embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and the structural, method, or functional transformations made by those of ordinary skill in the art based on these embodiments are all included in the protection scope of the present invention.

It should be noted that when the general workpiece is not positioned in space, it has six degrees of freedom, X\Y\Z three linear displacement degrees of freedom and corresponding A\B\C three rotational displacement degrees of freedom. The six degrees of freedom are usually expressed by X\Y\Z of the Cartesian Cartesian coordinate system to express the three linear axes, and the corresponding A\B\C to express the three rotational axes. The specific directions of the x-axis, the y-axis, and the z-axis in this application document are defined as the marked directions in FIG. 1 .

Referring to FIG. 1 , an embodiment of the present application provides a CNC milling cutter end face grinding device, which adopts an arc-shaped gantry structure and has good rigidity. The CNC milling cutter end face grinding device includes a base 1, a first moving mechanism 2, a sharpening assembly 3, a second moving mechanism 4, a workpiece clamping assembly 5, a measurement sensing assembly 6 and a numerical control system. The base 1 has a bearing surface 11 ; the first moving mechanism 2 is arranged on the bearing surface 11 , and the sharpening assembly 3 is arranged on the first moving mechanism 2 and moves along the y-axis under the action of the first moving mechanism 2 direction movement; the second moving mechanism 4 is arranged 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; measuring the induction The assembly 6 is configured on the first moving mechanism 2, and includes a sensor 61 for measuring the length of the milling cutter to be ground and a side head angular positioning head 62 for locating the angle of the milling cutter to be ground (refer to FIG. 2); numerical control The system is connected to the first moving mechanism 2 , the sharpening assembly 3 , the second moving mechanism 4 , the workpiece clamping assembly 5 and the measuring and sensing assembly 6 to coordinate the linkage operation among the above components.

Referring to FIG. 2 , the first moving mechanism 2 includes a first sliding seat 21 , a first linear guide rail group 22 , a first sliding block group 23 and a first driving device 24 , and the first sliding seat 21 is arranged on the bearing surface 11 . The first linear guide rail group 22 is arranged on the first sliding seat 21, the first slider group 23 is arranged on the first linear guide rail group 22, the first linear guide rail group 22 and the first slider group 23 is used together, so that the first slider group 23 can move linearly along the y-axis, the first slider group 23 is provided with a first mounting plate 231, and the first drive device 24 is arranged on the first sliding seat 21 and The first mounting plate 231 is connected to drive the first mounting plate 231 to move in the y-axis direction.

The first sliding seat 21 is also provided with a first sensor group. Specifically, the side of the first sliding seat 21 is provided with a y-axis sensor switch board 211 for installing the first sensor group, which is connected to the numerical control system. , used to sense the moving distance of the sharpening assembly 3 .

The first driving device 24 is arranged on the first sliding seat 21 through the bearing seat. The first driving device 24 can be a screw stepping motor, and a nut seat is provided on the screw rod. The lower center of the first mounting plate 231 is connected to the nut. The seats are connected, and the nut seat is matched with the screw rod, so that the first mounting plate 231 can move linearly along the y-axis with the rotation of the screw rod.

The first mounting plate 231 is also provided with a side head angle positioning head 62 , the side head angle direction positioning head 62 includes a contact portion 621 , the contact portion 621 has a straight contact surface, and the side head angle direction positioning head 62 is fixed by the side head bracket 63 . On the first mounting plate 231, and the flat contact surface is inclined at an angle of 45 degrees relative to the horizontal direction. After the milling cutter to be ground moves along the positive direction of the X axis and touches the side head angular positioning head 62, the collet is wound around. After the a-axis rotates by a certain angle, move and touch the angular positioning head 62 of the side head again to determine the zero point of the a-axis of the milling cutter.

Referring to FIG. 3 , the sharpening assembly 3 includes a motor 31 and a grinding head grinding wheel 32. The motor 31 is arranged on the first mounting plate 231, and the output shaft of the motor 31 is connected to the grinding head grinding wheel 32; A first grinding surface 321, a second grinding surface 322 and a third grinding surface 323 are distributed in sequence outside. The first grinding surface 321 and the second grinding surface 322 are arranged protruding from the surface of the grinding head and grinding wheel. The surface 323 is configured as an inclined surface inclined in a direction away from the center of the grinding head grinding wheel 3, wherein the first grinding surface 321 is used for grinding the second flank of the milling cutter, and the third grinding surface 323 is used for grinding the knife. Groove and rake face, the second grinding face 322 is used to dress the first flank face.

Referring to FIG. 4 , the second moving mechanism 4 is disposed on the base 1 . The second moving mechanism 4 includes a second sliding seat 41 , a second linear guide rail group 42 , a second sliding block group 43 and a second driving device 44 . , the second sliding seat 41 is arranged on the bearing surface 11, the second linear guide rail group 42 is arranged on the second sliding seat 41, the second sliding block group 43 is arranged on the second linear guide rail group 42, the second linear guide rail group 42 is arranged on the second sliding seat 41 The guide rail group 42 is used in conjunction with the second slider group 43, so that the second slider group 43 can move linearly along the x-axis. The second slider group 43 is provided with a second mounting plate 431, and the second driving device 44 is It is arranged on the second sliding seat 41 and connected to the second mounting plate 431, and drives the second mounting plate 431 to move in the x-axis direction.

The second sliding seat 41 is also provided with a second sensor group. Specifically, the side of the second sliding seat 41 is provided with an x-axis sensor switch plate 411 for installing the second sensor group, which is connected to the numerical control system. , used to sense 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 positions of the knife sharpening assembly 3 relative to each other 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 position of the workpiece clamping assembly 5 is precisely determined.

The second driving device 44 is disposed on the second sliding seat 41 through the bearing seat. The second driving device 44 can also be a lead screw stepping motor, and the lead screw is provided with a nut seat. The lower center of the second mounting plate 431 is connected to the The nut seat is connected, and the nut seat is matched with the screw rod, so that the second mounting plate 431 can move linearly along the x-axis with the rotation of the screw rod.

Referring to FIGS. 4 , 5 and 6 , a rotating mechanism 7 is provided 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 on the second mounting plate 431 of the second moving mechanism 4, and the reducer 72 is arranged on the reducer mounting plate 71, and its output shaft Connect the workpiece clamping assembly 5.

The workpiece clamping assembly 5 includes a worktable 51, a fixture 52 on the worktable 51 for fixing the milling cutter to be ground, and a power device 53 provided on the worktable 51 for driving the fixture 52 to rotate to adjust the grinding angle of the milling cutter to be ground. .

The table 51 is fixed on the output shaft of the reducer 72 and can rotate relative to the second mounting plate 431 in the z-axis direction under the action of the reducer 71 . The clamp 52 and the power device 53 are arranged on the table 51 .

The fixture 52 includes a headstock seat 521 fixed on the worktable 51 , a rotating shaft 522 is axially movably arranged in the headstock seat 521 , and a collet 523 is fixed on the rotating shaft 522 on one side of the headstock seat 521 , and the collet 523 is used for fixing When the milling cutter is to be ground, the power device 53 acts on the rotating shaft 522 to drive the collet 523a to rotate.

A timing belt structure 54 is arranged between the power device 53 and the rotating shaft 522. The timing belt structure 54 includes a driving pulley 541 disposed on the output shaft of the power device 53, a driven pulley 542 disposed on the rotating shaft 522, and a driven pulley 542 disposed on the driving pulley 541 and the The synchronous belt 543 on the driven wheel 542 is provided with a meshing structure matching the driving wheel 541 and the driven wheel 542, and the driving wheel 541 is driven to rotate by the synchronous belt 543 so that the collet 523 can rotate around the a-axis.

A handle structure 55 is also installed on the side of the rotating shaft 522 with the driven wheel 542 for manually adjusting the rotation angle of the collet 523 for fixing the milling cutter to be sharpened.

The CNC system adopts VB program design, ZDevelop for debugging, and controls the movement of each axis of the machine tool through the motion control card connection, and provides a man-machine interface for the CNC tool grinder to grind the corresponding tools.

An embodiment of the present application provides a grinding method for the above-mentioned CNC milling cutter end face grinding device, including:

The numerical control system automatically adjusts the position of the milling cutter to be ground and the zero point of the a-axis according to the length and angle information of the milling cutter to be ground fed back by the measuring induction component;

Control the rotation of the grinding wheel to grind the face and groove of the milling cutter to be ground, and adjust the relative position of the workpiece clamping assembly and the sharpening assembly in real time according to the different grinding parts during the grinding process.

In the CNC milling cutter end face grinding device of the present application, the movement principle of each component is as follows:

Movement of the collet 523 includes movement along the x-axis, rotation about the a-axis, and rotation about the z-axis. The linear movement of the collet 523 along the x-axis is driven by the second drive device 44 to make the nut seat move linearly along the x-axis along with the rotation of the lead screw; the rotation of the collet 523 around the a-axis is through the power device 53 The rotation of the synchronous belt 543 makes the collet 523 rotate; the rotation of the collet 523 around the z-axis is realized by the reducer 71 driving the rotation of the table 51 .

The linear movement of the grinding wheel 32 along the y-axis direction is realized by the rotation of the first driving device 24 to make the nut seat move with the rotation of the lead screw. During grinding, the rotation of the grinding wheel 32 is driven by the rotation of the motor 31 .

The rotation of the milling cutter to be ground around the a-axis is realized by driving the synchronous belt by the power device 53 .

In the CNC milling cutter end face grinding device of the present application, the collet can be moved along the x-axis through the guide rail, the sliding seat, and the slider, and moved to the designated position during grinding. A worktable is connected under the collet, and the reducer rotates to drive The table rotates around the z-axis, so that the collet and the tool rotate around the z-axis by corresponding angles respectively, so that the grinding wheel can cut into the workpiece respectively to realize the grinding of the rake face, the first flank and the second flank. For milling, each edge and face of the milling cutter can be machined through the rotation of the a-axis.

There is also a side head bracket in the working area of the machine tool to install the sensor, measure the length of the tool before each machining, and transmit the data to the numerical control system, and prepare for the next step of measuring the tool angle.

Compared with the prior art, the present invention has the advantage of providing a high-precision milling cutter grinding device. VB program design, ZDevelop debugging, through the motion control card connection to control the movement of each axis of the machine tool, to achieve high-precision CNC repair of milling cutters (including two-blade end mills, three-blade end mills, and four-blade end mills). At the same time, it provides a man-machine interface for the CNC tool grinder to grind the corresponding tools, which is convenient for users to operate.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

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;

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 in a protruding mode on the surface of the grinding head grinding wheel, and the third grinding surface is an inclined surface which is inclined in the direction far away from the center of the grinding head grinding wheel; the first grinding surface is used for grinding a second rear cutter surface of the milling cutter, the third grinding surface is used for grinding the cutter groove and the front cutter surface, and the second grinding surface is used for grinding the first rear cutter surface;

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 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 disposed 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 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.

5. The apparatus for grinding an end face of a numerically controlled milling cutter according to claim 4, 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.

6. The apparatus for grinding an end face of a milling cutter according to claim 5, 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 is disposed on the bearing surface, the second linear guide rail group is disposed on the second carriage, the second slider group is disposed on the second linear guide rail group, a second mounting plate is provided on the second slider group, the second driving device is disposed on the second carriage and connected to the second mounting plate, the second mounting plate is driven to move in the x-axis direction, and the reducer mounting plate is fixed to the second mounting plate.

7. The apparatus for grinding an end face of a numerically controlled milling cutter according to claim 6, 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.

8. The grinding device for the end face of the numerical control milling cutter according to claim 7, 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 the rotating shaft on one side of the headstock and used for fixing the milling cutter to be ground, and the power device acts on the rotating shaft to drive an a shaft of the collet chuck to rotate.

9. The method for grinding an end face of a numerically controlled milling cutter according to any one of claims 1 to 8, 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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