阅读说明：本技术 一种火花机中电极用定位系统 (Positioning system for electrode in spark machine ) 是由 汤化季 黄少明 戴运山 孙彪 于 2020-12-24 设计创作，主要内容包括：本发明公开了一种火花机中电极用定位系统,涉及火花机的技术领域,包括工件基准点设定模块、标准球设定模块、电极设定模块,标准球设定模块利用标准球点碰面方式可定位工件基准点与电极基准点,标准球设定模块与工件基准点设定模块连接,标准球设定模块与电极设定模块连接,电极设定模块与工件基准点设定模块通过标准球设定模块相关联连接,工件基准点设定模块根据标准球设定模块定位数据控制工件,电极设定模块根据标准球设定模块定位数据控制电极,电极移动位置与工件需打磨位置相对应设置。利用智能控制平台,对工件、电极基准点进行定位,使电极对工件进行自动定位加工,不仅减少了人工定位劳动力,且有效增强电极的定位,提高加工效率。(The invention discloses a positioning system for an electrode in a spark machine, which relates to the technical field of spark machines and comprises a workpiece datum point setting module, a standard ball setting module and an electrode setting module, wherein the standard ball setting module can position a workpiece datum point and an electrode datum point by utilizing a standard ball point-to-surface mode, the standard ball setting module is connected with the workpiece datum point setting module, the standard ball setting module is connected with the electrode setting module, the electrode setting module is connected with the workpiece datum point setting module in a correlation mode through the standard ball setting module, the workpiece datum point setting module controls a workpiece according to the positioning data of the standard ball setting module, the electrode setting module controls an electrode according to the positioning data of the standard ball setting module, and the moving position of the electrode is arranged corresponding to the position of. The intelligent control platform is utilized to position the workpiece and the electrode reference point, so that the electrode can automatically position and process the workpiece, the labor force for manual positioning is reduced, the positioning of the electrode is effectively enhanced, and the processing efficiency is improved.)

1. A positioning system for an electrode in a spark machine comprises an intelligent control platform, wherein the intelligent control platform is connected with a spark machine device, and is characterized in that the intelligent control platform comprises a workpiece datum point setting module, a standard ball setting module and an electrode setting module, the standard ball setting module can position a workpiece datum point and an electrode datum point by using a standard ball point-to-surface mode, the standard ball setting module is connected with the workpiece datum point setting module, the standard ball setting module is connected with the electrode setting module, the electrode setting module is connected with the workpiece datum point setting module in a correlation mode through the standard ball setting module, the workpiece datum point setting module controls a workpiece according to the datum data of the standard ball setting module, the electrode setting module controls the electrode according to the datum data of the standard ball setting module, the electrode moving position and the position of the workpiece needing to be polished are arranged correspondingly.

2. The positioning system for an electrode in a spark machine as claimed in claim 1, wherein said calibration ball setting module comprises the steps of:

the specific operation flow when the test bar is not selected is as follows:

s1, selecting a Px standard ball, and initializing and calculating related data;

s2, positioning to the position of the lower ball in the X + direction, positioning the lower ball to touch the edge in the X-direction, positioning to the position of the lower ball in the X-direction, touching the edge in the X-direction of the lower ball and calculating the X + center;

s3, positioning to the Y + direction position of the center of the lower ball X, positioning the Y-direction edge collision of the lower ball, positioning to the Y-direction position of the center of the lower ball X, positioning the Y + direction edge collision of the lower ball and calculating the Y center;

s4, positioning the test ball to the X + direction position of the center of the ball Y, touching the edge in the X-direction of the test ball, positioning the test ball to the X-direction position of the center of the ball Y, touching the edge in the X + direction of the test ball and calculating the center;

s5, moving to the X center and the Y center;

s6, testing Z-axis data;

s7, ending the program;

the specific operation flow when selecting the test bar is as follows:

s1, selecting a Px standard ball, and initializing a test rod and calculating related data;

s2, positioning to the position of the lower ball in the X + direction, positioning the lower ball to touch the edge in the X-direction, positioning to the position of the lower ball in the X-direction, touching the edge in the X-direction of the lower ball and calculating the X + center;

s3, positioning to the Y + direction position of the center of the lower ball X, positioning the Y-direction edge collision of the lower ball, positioning to the Y-direction position of the center of the lower ball X, positioning the Y + direction edge collision of the lower ball and calculating the Y center;

s4, positioning the test rod to the position of the X + direction of the center of the ball Y, touching the edge in the X-direction of the test rod, positioning the test rod to the position of the X-direction of the center of the ball Y, touching the edge in the X + direction of the test rod and calculating the center;

s5, moving to the center of the X center and the center of the Y, touching the edge by the Z axis and calculating a coordinate value;

s6, setting the center of the spindle clamp and the horizontal position of the bottom as a G958 coordinate 0 point, and simultaneously setting the G959 coordinate to be consistent with the Px coordinate;

and S7, ending the program.

3. The positioning system for an electrode in a spark machine as set forth in claim 1, wherein said workpiece reference point setting module includes the steps of:

the specific operation flow when selecting the hole is as follows:

s1, hole center data X, hole center data Y, fast forward quantity;

s2, moving the ball to a proper position and executing;

s3, touching the edges in the positive and negative directions of X, recording data, and calculating the center of the X axis;

s4, performing Y positive and negative direction edge collision at the X-axis center, recording data, and calculating the Y-axis center;

s5, performing edge collision in the positive and negative directions of the X axis center and the Y axis center, recording data, and calculating the X axis center;

s6, calculating and setting the hole center, and pausing the M01;

s7, selecting Z;

s8, touching the edge by the Z axis and setting a Z coordinate;

s9, ending the program;

the specific operation flow when the hole is not selected is as follows:

s1, inputting the diameter of the test ball;

s2, pressing a direction button corresponding to the workpiece reference point, and inputting a coordinate value of the corresponding direction;

s3, if the workpiece reference zero point is the workpiece center, pressing down X + "/" X- "/" Y + "/" Y- ";

s4, moving the test ball to the starting direction position according to the sequence of (r) - (c) - (Z);

s5, pressing ENT execution key program to touch edge automatically, and setting and calculating coordinate data of corresponding edge;

s6, automatically pausing, and manually moving the operator to the proper position in the next direction according to the sequence of (I) - (III) - (IV) -Z and continuing according to the 'ENT';

s7, selecting Z;

s8, touching the edge by the Z axis and setting a Z coordinate;

and S9, ending the program.

4. The positioning system for an electrode in a spark machine of claim 1, wherein said electrode setting module comprises the steps of:

the specific operation flow during hole positioning is as follows:

s1, X, Y, Z fast forward amount;

s2, moving the electrode to a proper position, and executing;

s3, recording data when the edges of the X-axis positive and negative directions touch, calculating the center of the X-axis, and moving the X-axis to the center;

s4, if Y is tested, skipping the step, if Y is not tested, recording data by touching the edges in the positive and negative directions of Y, calculating the center of the Y axis, moving the Y axis to the center, setting that Y is tested and returning to 3;

s5, setting the hole center X as Px _ X and the hole center Y as Px _ Y;

s6, selecting Z, enabling the Z axis to touch the edge and setting a Z coordinate Px _ Z;

s7, calculating an electrode machining position, moving to the electrode machining position, and setting the machining position X/Y as 0;

s8, ending the program;

the specific operation flow when synchronizing the coordinates is as follows:

s1, synchronizing the zero point of the current coordinate X with Px _ X;

s2, synchronizing the zero point of the current coordinate Y with Px _ Y;

s3, synchronizing the zero point of the current coordinate Z with Px _ Z;

s4, calculating an electrode machining position, moving to the electrode machining position, and setting the machining position X/Y as 0;

s5, ending the program;

the specific operation flow of Move 959 is as follows:

s1, switching to G958 coordinate system;

s2, calculating the numerical values of # X, # Y and # Z according to the Px coordinate, the G958 coordinate and the electrode offset;

s3, switching to a G54 coordinate system, and setting the current positions as # X, # Y and # Z;

s4, calculating an electrode machining position, moving to the electrode machining position, and setting the machining position X/Y as 0;

s5, ending the program;

the specific operation flow of the automatic centering comprises the following steps:

s1, inputting related electrode data;

s2, selecting a starting point, and pressing ENT;

s3, automatically centering the opposite angle collision of the program;

s4, if the mode is 'Offset', combining the G958 coordinate to calculate the center deviation value of the electrode, displaying on the interface, and jumping to the step 7;

s5, if not, setting the center coordinates of the electrode in combination with the Px coordinates in the 'Offset' mode;

s6, moving the workpiece to an electrode machining position, wherein the X/Y of the machining position is set to be 0;

and S7, ending the program.

5. The positioning system for an electrode in a spark machine as claimed in claim 1, wherein the input terminal of said intelligent control platform is electrically connected to the output terminal of a power module, said power module being effective to provide electrical power to the spark machine device to facilitate normal operation of the device.

Technical Field

The invention relates to the technical field of spark machines, in particular to a positioning system for an electrode in a spark machine.

Background

The precise numerical control electric spark forming machine tool is one of important devices of precise special processing technology, is mainly used for processing superhard materials and brittle materials which are difficult to process by a traditional processing machine tool, and has important significance for processing precise machinery, automobiles, microelectronic products, precise parts of aerospace and precise dies. The electric spark machining has the characteristics of no cutting force, no burr and tool mark groove, no need of harder tool electrode material than workpiece material, and the like.

However, in actual working, the electric discharge machining tool has the following problems: (1) the positioning of the workpiece is complicated, and is particularly troublesome when the workpiece meets irregular parts; (2) the multi-electrode positioning is troublesome, and the calculation is easy to make mistakes; (3) because each discharged electrode needs to be corrected and divided into two parts to discharge, the effective processing time of the machine table is wasted. In a word, the traditional positioning method cannot guarantee the repeated positioning precision of the workpiece and the electrode, and the machining quality of the die is uncontrollable along with many subjective judgments in the operation process. In addition, a great deal of time is wasted in the correction and the centering work of the electrode and the workpiece, so that the manufacturing speed of the die cannot be increased rapidly. Along with the continuous improvement of the requirements of people on the processing quality and delivery period of the die, the traditional production mode of manual operation has no way to meet the requirements of people on the die at present.

Disclosure of Invention

Aiming at the problems in practical application, the invention aims to provide a positioning system for an electrode in a spark machine, which comprises the following specific scheme:

a positioning system for an electrode in a spark machine comprises an intelligent control platform, wherein the intelligent control platform is connected with the spark machine, the intelligent control platform comprises a workpiece reference point setting module, a standard ball setting module and an electrode setting module, the standard ball setting module can position a workpiece reference point and an electrode reference point by using a standard ball point-to-surface mode, the standard ball setting module is connected with the workpiece reference point setting module, the standard ball setting module is connected with the electrode setting module, the electrode setting module and the workpiece reference point setting module are connected in a correlation mode through the standard ball setting module, the workpiece reference point setting module controls the workpiece according to the standard ball setting module positioning data, the electrode setting module controls the electrodes according to the standard ball setting module positioning data, and the moving positions of the electrodes are arranged corresponding to the positions of the workpieces to be polished.

Preferably, the standard ball setting module comprises the steps of:

the specific operation flow when the test bar is not selected is as follows:

s1, selecting a Px standard ball, and initializing and calculating related data;

s2, positioning to the position of the lower ball in the X + direction, positioning the lower ball to touch the edge in the X-direction, positioning to the position of the lower ball in the X-direction, touching the edge in the X-direction of the lower ball and calculating the X + center;

s3, positioning to the Y + direction position of the center of the lower ball X, positioning the Y-direction edge collision of the lower ball, positioning to the Y-direction position of the center of the lower ball X, positioning the Y + direction edge collision of the lower ball and calculating the Y center;

s4, positioning the test ball to the X + direction position of the center of the ball Y, touching the edge in the X-direction of the test ball, positioning the test ball to the X-direction position of the center of the ball Y, touching the edge in the X + direction of the test ball and calculating the center;

s5, moving to the X center and the Y center;

s6, testing Z-axis data;

s7, ending the program;

the specific operation flow when selecting the test bar is as follows:

s1, selecting a Px standard ball, and initializing a test rod and calculating related data;

s2, positioning to the position of the lower ball in the X + direction, positioning the lower ball to touch the edge in the X-direction, positioning to the position of the lower ball in the X-direction, touching the edge in the X-direction of the lower ball and calculating the X + center;

s3, positioning to the Y + direction position of the center of the lower ball X, positioning the Y-direction edge collision of the lower ball, positioning to the Y-direction position of the center of the lower ball X, positioning the Y + direction edge collision of the lower ball and calculating the Y center;

s4, positioning the test rod to the position of the X + direction of the center of the ball Y, touching the edge in the X-direction of the test rod, positioning the test rod to the position of the X-direction of the center of the ball Y, touching the edge in the X + direction of the test rod and calculating the center;

s5, moving to the center of the X center and the center of the Y, touching the edge by the Z axis and calculating a coordinate value;

s6, setting the center of the spindle clamp and the horizontal position of the bottom as a G958 coordinate 0 point, and simultaneously setting the G959 coordinate to be consistent with the Px coordinate;

and S7, ending the program.

Preferably, the workpiece reference point setting module includes the steps of:

the specific operation flow when selecting the hole is as follows:

s1, hole center data X, hole center data Y, fast forward quantity;

s2, moving the ball to a proper position and executing;

s3, touching the edges in the positive and negative directions of X, recording data, and calculating the center of the X axis;

s4, performing Y positive and negative direction edge collision at the X-axis center, recording data, and calculating the Y-axis center;

s5, performing edge collision in the positive and negative directions of the X axis center and the Y axis center, recording data, and calculating the X axis center;

s6, calculating and setting the hole center, and pausing the M01;

s7, selecting Z;

s8, touching the edge by the Z axis and setting a Z coordinate;

s9, ending the program;

the specific operation flow when the hole is not selected is as follows:

s1, inputting the diameter of the test ball;

s2, pressing a direction button corresponding to the workpiece reference point, and inputting a coordinate value of the corresponding direction;

s3, if the workpiece reference zero point is the workpiece center, pressing down X + "/" X- "/" Y + "/" Y- ";

s4, moving the test ball to the starting direction position according to the sequence of (r) - (c) - (Z);

s5, pressing ENT execution key program to touch edge automatically, and setting and calculating coordinate data of corresponding edge;

s6, automatically pausing, and manually moving the operator to the proper position in the next direction according to the sequence of (I) - (III) - (IV) -Z and continuing according to the 'ENT';

s7, selecting Z;

s8, touching the edge by the Z axis and setting a Z coordinate;

and S9, ending the program.

Preferably, the electrode setting module comprises the steps of:

the specific operation flow during hole positioning is as follows:

s1, X, Y, Z fast forward amount;

s2, moving the electrode to a proper position, and executing;

s3, recording data when the edges of the X-axis positive and negative directions touch, calculating the center of the X-axis, and moving the X-axis to the center;

s4, if Y is tested, skipping the step, if Y is not tested, recording data by touching the edges in the positive and negative directions of Y, calculating the center of the Y axis, moving the Y axis to the center, setting that Y is tested and returning to 3;

s5, setting the hole center X as Px _ X and the hole center Y as Px _ Y;

s6, selecting Z, enabling the Z axis to touch the edge and setting a Z coordinate Px _ Z;

s7, calculating an electrode machining position, moving to the electrode machining position, and setting the machining position X/Y as 0;

s8, ending the program;

the specific operation flow when synchronizing the coordinates is as follows:

s1, synchronizing the zero point of the current coordinate X with Px _ X;

s2, synchronizing the zero point of the current coordinate Y with Px _ Y;

s3, synchronizing the zero point of the current coordinate Z with Px _ Z;

s4, calculating an electrode machining position, moving to the electrode machining position, and setting the machining position X/Y as 0;

s5, ending the program;

the specific operation flow of Move 959 is as follows:

s1, switching to G958 coordinate system;

s2, calculating the numerical values of # X, # Y and # Z according to the Px coordinate, the G958 coordinate and the electrode offset;

s3, switching to a G54 coordinate system, and setting the current positions as # X, # Y and # Z;

s4, calculating an electrode machining position, moving to the electrode machining position, and setting the machining position X/Y as 0;

s5, ending the program;

the specific operation flow of the automatic centering comprises the following steps:

s1, inputting related electrode data;

s2, selecting a starting point, and pressing ENT;

s3, automatically centering the opposite angle collision of the program;

s4, if the mode is 'Offset', combining the G958 coordinate to calculate the center deviation value of the electrode, displaying on the interface, and jumping to the step 7;

s5, if not, setting the center coordinates of the electrode in combination with the Px coordinates in the 'Offset' mode;

s6, moving the workpiece to an electrode machining position, wherein the X/Y of the machining position is set to be 0;

and S7, ending the program.

Preferably, the input end of the intelligent control platform is electrically connected with the output end of the power supply module, and the power supply module can effectively provide electric energy for the spark machine device, so that the normal operation of the device is facilitated.

Compared with the prior art, the invention has the following beneficial effects: through the intelligent control platform, the standard ball is utilized to acquire the coordinate data of the workpiece and the electrode datum plane in a point-to-surface mode, and the electrode is automatically positioned according to the coordinate data, so that the electrode is automatically positioned and processed on the workpiece, the manual positioning labor force is reduced, the accurate positioning of the electrode is effectively enhanced, and the processing efficiency of the workpiece is improved.

Drawings

FIG. 1 is a schematic view of an intelligent positioning machining method for a spark machine according to the present invention;

FIG. 2 is a schematic diagram of a workpiece fiducial point setting module;

FIG. 3 is a schematic diagram of a standard ball setting module;

FIG. 4 is a schematic diagram of the steps of the electrode setting module.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.

As shown in fig. 1, a positioning system for an electrode in a spark machine comprises an intelligent control platform, the intelligent control platform is connected with the spark machine, the intelligent control platform comprises a workpiece reference point setting module, a standard ball setting module and an electrode setting module, the standard ball setting module can position a workpiece reference point and an electrode reference point by using a standard ball point contact surface mode, the standard ball setting module is connected with the workpiece reference point setting module, the standard ball setting module is connected with the electrode setting module, the electrode setting module is connected with the workpiece reference point setting module through the standard ball setting module in a related manner, the workpiece reference point setting module controls a workpiece according to positioning data of the standard ball setting module, the electrode setting module controls the electrode according to the positioning data of the standard ball setting module, and the moving position of the electrode is set corresponding to the position of.

Preferably, the input end of the intelligent control platform is electrically connected with the output end of the power supply module, and the power supply module can effectively provide electric energy for the spark machine equipment, so that the normal operation of the equipment is facilitated.

Referring to fig. 2, the workpiece reference point setting module is mainly used for: 1. testing the diameter of the ball; 2. workpiece dimension "Z" data is determined. The method specifically comprises the following steps:

the specific operation flow when selecting the hole is as follows: 1. hole center data "X", hole center data "Y", fast forward volume; 2. moving the ball to a proper position, and executing; touching edges in the positive and negative directions of X, recording data, and calculating the center of the X axis; 4. performing Y positive and negative direction edge collision on the X-axis center, recording data, and calculating the Y-axis center; 5, performing X positive and negative edge collision on the Y-axis center, recording data, and calculating the X-axis center; 6. calculating and setting the hole center, and pausing M01; 7. selecting "Z"; 8, touching the Z axis with the edge and setting a Z coordinate; 9. the routine is ended.

The specific operation flow when the hole is not selected is as follows: 1. inputting the diameter of the test ball; 2. pressing a direction button corresponding to the workpiece reference point, and inputting a coordinate value of a corresponding direction; 3. if the workpiece reference zero point is the workpiece center, pressing down X + "/" X- "/" Y + "/" Y- "; 4. moving the test ball to the starting direction position according to the sequence of (I) - (II) - (III) - (Z); 5. pressing ENT execution key program to automatically touch edges and setting and calculating coordinate data of corresponding edges; 6. the operator can automatically pause and then manually move to the proper position in the next direction according to the sequence of (I) - (III) - (IV) -Z and continue to operate according to the 'ENT'; 7. selecting "Z"; 8, touching the Z axis with the edge and setting a Z coordinate; 9. the routine is ended.

As shown in connection with fig. 3, the standard ball setting module is configured to: 1. testing the diameter of the ball; 2. selecting a standard ball Px; and 3, touching the edge by the Z axis. The method specifically comprises the following steps:

the specific operation flow when the test bar is not selected is as follows: 1. selecting a Px standard ball, and initializing and calculating related data; 2. positioning the lower ball at the position in the X + direction, touching the edge in the X-direction of the lower ball, positioning the lower ball at the position in the X-direction, touching the edge in the X-direction of the lower ball and calculating the X + center; 3. positioning to the Y + direction position of the center of the lower ball X, positioning the Y-direction collision edge of the lower ball, positioning to the Y-direction position of the center of the lower ball X, positioning the Y + direction collision edge of the lower ball and calculating the Y center; 4. positioning a test ball to the X + direction position of the center of the ball Y, testing the X-direction edge collision of the ball, positioning the test ball to the X-direction position of the center of the ball Y, testing the X + direction edge collision of the ball and calculating the center; 5. move to the X center and the Y center; 6. testing Z-axis data; 7. the routine is ended.

The specific operation flow when selecting the test bar is as follows: 1. selecting a Px standard ball, and initializing a test bar and calculating related data; 2. positioning the lower ball at the position in the X + direction, touching the edge in the X-direction of the lower ball, positioning the lower ball at the position in the X-direction, touching the edge in the X-direction of the lower ball and calculating the X + center; 3. positioning to the Y + direction position of the center of the lower ball X, positioning the Y-direction collision edge of the lower ball, positioning to the Y-direction position of the center of the lower ball X, positioning the Y + direction collision edge of the lower ball and calculating the Y center; 4. positioning the test rod to the X + direction position of the center of the ball Y, touching the edge in the X-direction of the test rod, positioning the test rod to the X-direction position of the center of the ball Y, touching the edge in the X + direction of the test rod and calculating the center; 5. moving to the center of the X center and the center of the Y, touching the edge by the Z axis and calculating a coordinate value; 6. setting the center and the bottom horizontal position of the spindle clamp as a G958 coordinate 0 point, and simultaneously setting a G959 coordinate to be consistent with the Px coordinate; 7. the routine is ended.

As shown in fig. 4, the electrode setting module is configured to: 1. electrode data or number; 2. importing or exporting electrode data; 3. px (reference sphere) is selected. The method specifically comprises the following steps:

the specific operation flow during hole positioning is as follows: 1, X, Y, Z fast forward amount; 2. moving the electrode to a proper position, and executing; recording data by touching edges in the positive and negative directions of X, calculating the center of an X axis, and moving the X axis to the center; 4. if Y is tested, the step is skipped, if Y is not tested, the positive direction and the negative direction of Y are collided to record data, the center of the Y axis is calculated, the Y axis moves to the center, Y is set to be tested and returns to 3; 5. setting a hole center X as Px _ X and setting a hole center Y as Px _ Y; 6. selecting Z, touching the Z axis with the edge and setting a Z coordinate Px _ Z; 7. calculating an electrode machining position, moving to the electrode machining position, and setting the machining position X/Y as 0; 8. the routine is ended.

The specific operation flow when synchronizing the coordinates is as follows: 1. the zero point of the current coordinate X is synchronized with Px _ X; 2. the zero point of the current coordinate Y is synchronous with Px _ Y; 3. the zero point of the current coordinate Z is synchronous with Px _ Z; 4. calculating an electrode machining position, moving to the electrode machining position, and setting the machining position X/Y as 0; 5. the routine is ended.

The specific operation flow of Move 959 is as follows: 1. switching to G958 coordinate system; 2. calculating the numerical values of # X, # Y and # Z according to the Px coordinate, the G958 coordinate and the electrode offset; 3. switching to a G54 coordinate system, and setting the current positions as # X, # Y, # Z; 4. calculating an electrode machining position, moving to the electrode machining position, and setting the machining position X/Y as 0; 5. the routine is ended.

The specific operation flow of the automatic centering comprises the following steps: 1. inputting related electrode data; 2. selecting a starting point, and pressing ENT; 3. automatically centering opposite angle collision edges of the program; 4. if the mode is 'Offset', calculating the center deviation value of the electrode by combining the G958 coordinate, displaying the center deviation value on an interface, and jumping to the step 7; 5. if not, combining the "Offset" mode with the Px coordinate to set the center coordinate of the electrode; 6. a machining position moved to the electrode machining position, wherein the machining position X/Y is set to 0; 7. the routine is ended.

Through the intelligent control platform, the standard ball is utilized to acquire the coordinate data of the workpiece and the electrode datum plane in a point-to-surface mode, and the electrode is automatically positioned according to the coordinate data, so that the electrode is automatically positioned and processed on the workpiece, the manual positioning labor force is reduced, the accurate positioning of the electrode is effectively enhanced, and the processing efficiency of the workpiece is improved.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.