CN117901272A

CN117901272A - Graphite ring processing device capable of automatically changing cutter

Info

Publication number: CN117901272A
Application number: CN202410227509.3A
Authority: CN
Inventors: 孟军刚
Original assignee: Beijing Senwo Clay Technology Co ltd
Current assignee: Beijing Senwo Clay Technology Co ltd
Priority date: 2024-02-29
Filing date: 2024-02-29
Publication date: 2024-04-19

Abstract

The invention discloses a graphite ring machining device capable of automatically changing a cutter, which belongs to the technical field of production and preparation and comprises a supporting seat, a mounting frame, a rotary driver, a limiting assembly and a control assembly, wherein the supporting seat is used for being connected with a feeding device; the mounting frame is rotationally connected with the supporting seat, and a plurality of cutters are arranged on the mounting frame; the rotary driver is connected with the supporting seat and the mounting frame; the limiting assembly is connected with the supporting seat and the mounting frame at the same time and used for limiting the rotation of the mounting frame; the control assembly is electrically connected with the rotary driver and the limiting assembly at the same time and is connected with the supporting seat, and is used for controlling and acquiring the rotation angle of the mounting frame. The graphite ring machining device capable of automatically changing the cutter solves the problems that in the prior art, knocking dust is harmful to operators, the removing effect is poor, the cost is high and the efficiency is low; the turning process has the advantages of large abrasion to the cutter, low service life, frequent machine halt for cutter replacement and low working efficiency, and has remarkable action effect and is suitable for wide popularization.

Description

Graphite ring processing device capable of automatically changing cutter

Technical Field

The invention relates to the technical field of production and preparation, in particular to a graphite ring processing device capable of automatically changing a cutter.

Background

The graphite seat is used for the electrode of the reduction furnace, and materials are adsorbed on the surface of the graphite seat and the joint of the graphite seat and the bullet head in the production process. In order to ensure the reuse and the effective connection of the graphite seat and the bullet head, the graphite seat needs to be cleaned before the reuse.

At present, two main methods exist for cleaning the surface, one is manual knocking and removing, tungsten carbide or molybdenum hammers are used for knocking and removing attachments on the surface of a graphite seat, the method has poor effect, high cost, poor effect and low efficiency, and dust and the like generated in the knocking process are greatly harmful to operators; the other is a method for processing special lathe equipment, namely, the graphite seat is clamped on the lathe, and the surface attachments are removed in a turning mode, so that the method has good theoretical effect, but has low efficiency, high abrasion to the cutter, low service life and low efficiency, a large amount of dust is generated, only one cutter head can be installed at a time, the effective service life of the cutter head is 500-800, and the cutter head needs to be replaced when a certain number of graphite rings are processed.

Disclosure of Invention

Aiming at the defects, the invention solves the technical problems of providing the graphite ring processing device capable of automatically changing the cutter, so as to solve the problems of great damage to operators caused by knocking dust, poor removal effect, high cost and low efficiency in the prior art; the problems of large abrasion to the cutter, short service life, frequent machine halt for changing the cutter and low working efficiency in the turning process are solved.

The invention provides a graphite ring processing device capable of automatically changing a cutter, which comprises:

the supporting seat is used for being connected with the feeding device;

The mounting frame is rotationally connected with the supporting seat, and a plurality of cutters are arranged on the mounting frame;

The rotary driver is connected with the supporting seat and the mounting frame and used for driving the mounting frame to rotate;

The limiting assembly is simultaneously connected with the supporting seat and the mounting frame and used for limiting the rotation of the mounting frame;

and the control assembly is electrically connected with the rotary driver and the limiting assembly and is connected with the supporting seat, and is used for controlling and acquiring the rotation angle of the mounting frame.

Preferably, the mounting frame comprises:

the rotary shaft penetrates through the supporting seat to be connected with the rotary driver and is rotationally connected with the supporting seat;

The rotary cutterhead is connected with one end of the rotary shaft, which is far away from the rotary driver, and is detachably connected with the cutter, and a plurality of mounting grooves matched with the cutter are uniformly formed in the circumferential direction of the rotary cutterhead.

Preferably, the limiting assembly comprises:

The positioning driver is connected with the supporting seat and penetrates through the supporting seat;

the positioning chuck is connected with the rotary shaft, a plurality of clamping grooves are formed in the circumferential direction of the positioning chuck, and the clamping grooves correspond to the mounting grooves one by one;

the positioning pin is connected with the positioning driver and clamped with the positioning chuck, and the positioning pin is matched with the structure of the clamping groove.

Preferably, the support base includes:

The base is connected with the rotary driver and the positioning driver at the same time and is rotationally connected with the rotary shaft, the base is connected with the feeding device, the positioning driver penetrates through the base and is connected with the positioning pin, a control groove is formed in the base, and the positioning pin and the positioning chuck are both arranged in the control groove;

the mounting seat is connected with the base and is rotationally connected with the rotary shaft, and the rotary shaft sequentially penetrates through the mounting seat and the base and is fixedly connected with the rotary driver.

Preferably, the limiting assembly further comprises:

The limiting seats are connected with the base and arranged in the control grooves, are in sliding connection with the positioning pins and correspond to the positioning pins one by one, and are provided with sliding holes matched with the positioning pins;

the tensioning sleeve is arranged between the positioning chuck and the rotating shaft and used for limiting the relative position between the positioning chuck and the rotating shaft.

Preferably, the control assembly comprises:

the angle detection disc is fixedly connected with the rotary shaft, a rotary cavity is arranged on the mounting seat, and the angle detection disc is arranged in the rotary cavity;

The monitoring sensor is connected with the mounting seat and is electrically connected with the angle detection disc and used for acquiring the rotation angle of the rotary shaft;

And the controller is electrically connected with the rotary driver, the positioning driver, the angle detection disc and the monitoring sensor at the same time and is used for acquiring and processing data monitored by the angle detection disc and the monitoring sensor.

Preferably, the positioning pin and the clamping groove are both in conical structures; the positioning drivers are provided with two positioning pins which are symmetrically arranged on two sides of the supporting seat, and the positioning pins are in one-to-one correspondence with the positioning drivers.

Preferably, the cutter is uniformly provided with four cutters along the circumferential direction of the rotary cutter head; the base and the mounting seat are provided with a plurality of through holes.

Preferably, a bearing seat is arranged between the rotary shaft and the base and between the rotary shaft and the mounting seat.

Preferably, the rotary shaft is connected with the rotary driver through a coupling.

According to the technical scheme, the graphite ring machining device capable of automatically changing the cutter is used for the technical field of polycrystalline silicon production and preparation, is a full-automatic cutter changing device capable of automatically cleaning and machining attachments on the surface of a graphite seat, and can automatically change the cutter in the process of machining the graphite seat through the matching arrangement of a rotary driver and a limiting assembly; through the setting of mounting bracket, can once only install or replace a plurality of cutters to the concentrated time of changing the sword, extension shut down maintenance equipment's cycle, improvement production efficiency. The invention solves the problems of great injury to operators, poor removal effect, high cost and low efficiency caused by manual dust knocking in the prior art; the special lathe equipment has the advantages that the abrasion to the cutter is large, the service life is low, only one cutter head can be installed, the cutter head needs to be replaced when a certain number of graphite rings are machined, the working efficiency is low, the equipment is required to be frequently stopped and maintained, the structure is simple, the action effect is obvious, and the special lathe equipment is suitable for wide popularization.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a graphite ring processing apparatus with automatic tool changing according to the present invention;

FIG. 2 is a schematic diagram of a front view of a graphite ring processing apparatus with automatic tool changing according to the present invention;

FIG. 3 is a schematic top view of a graphite ring machining device with automatic tool changing according to the present invention;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 2;

fig. 5 is a schematic cross-sectional view taken along line B-B in fig. 2.

In fig. 1-5:

1. a support base; 2. a mounting frame; 3. a rotary driver; 4. a limit component; 5. a control assembly; 6. a cutter; 7. a bearing seat; 8. a coupling; 11. a base; 12. a mounting base; 21. a rotating shaft; 22. a cutter head is rotated; 41. a positioning driver; 42. positioning a chuck; 43. a positioning pin; 44. a limit seat; 45. a tensioning sleeve; 51. an angle detection disc; 52. monitoring a sensor; 111. a control groove; 121. a swivel cavity; 122. a through hole; 221. a mounting groove; 421. a clamping groove; 441. and a slide hole.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 5, a specific embodiment of an automatic tool changing graphite ring processing apparatus according to the present invention will now be described. The graphite ring machining device capable of automatically changing the cutter comprises a supporting seat 1, a mounting frame 2, a rotary driver 3, a limiting component 4 and a control component 5, wherein the supporting seat 1 is used for being connected with a feeding device; the mounting frame 2 is rotationally connected with the supporting seat 1, and a plurality of cutters 6 are arranged on the mounting frame 2; the rotary driver 3 is connected with the supporting seat 1 and the mounting frame 2 and is used for driving the mounting frame 2 to rotate; the limiting component 4 is connected with the supporting seat 1 and the mounting frame 2 at the same time and is used for limiting the rotation of the mounting frame 2; the control assembly 5 is electrically connected with the rotary driver 3 and the limiting assembly 4 at the same time and is connected with the supporting seat 1 for controlling and acquiring the rotation angle of the mounting frame 2.

For convenience of explanation, referring to fig. 1, a rectangular coordinate system is established by taking any point in space as an origin, a setting direction of the rotary driver 3 relative to the supporting seat 1 as a Z axis, a setting direction of the positioning driver 41 in the limiting component 4 relative to the supporting seat 1 as an X axis, and a linear direction perpendicular to the X axis and the Z axis at the same time as a Y axis, wherein an XY plane is a horizontal plane, a direction indicated on the horizontal plane is a horizontal direction, and a direction indicated by the Z axis is a vertical direction.

In this embodiment, the rotary drive 3 may be a servomotor and the tool 6 a standard turning tool. A plurality of cutters 6 are evenly distributed on the mounting frame 2 in 360 degrees, and by way of example, four cutters 6 can be arranged, and the included angles between the adjacent cutters 6 are 90 degrees. The device is arranged on a feeding device for processing the graphite ring, and the processing of the excircle and the end face of the graphite ring is realized through a cutter 6. The rotary driver 3 drives the mounting frame 2 to rotate, and then drives the cutter 6 to rotate, the control assembly 5 monitors the rotation angle of the mounting frame 2, namely the direction of the cutter 6, after the mounting frame 2 is monitored to rotate in place, the rotary driver 3 is controlled to be closed, and the limiting assembly 4 is started to move, so that the limiting assembly 4 locks and fixes the mounting frame 2, the cutter 6 is guaranteed not to rotate when being subjected to torque and impact during processing, the rotary driver 3 cannot be disturbed, a plurality of cutter heads can be installed each time by the device, automatic cutter changing is realized during processing through the counting of the number of the graphite rings, and the time for changing the cutter 6 is increased by multiple times compared with that of a common single cutter bar device.

Compared with the prior art, the graphite ring machining device with automatic tool changing can realize automatic tool changing in the machining process through the matching arrangement of the rotary driver 3 and the limiting component 4; through the setting of mounting bracket 2, can once only install or replace a plurality of cutters 6 to the concentrated time of changing the sword, the cycle of stopping maintenance equipment is prolonged, improves production efficiency. The device solves the problems of great damage to operators, poor removal effect, high cost and low efficiency caused by knocking dust in the prior art; the turning process has the problems of large abrasion to the cutter 6, short service life, frequent machine halt for cutter replacement and low working efficiency.

As another embodiment of the present invention, the structure of the graphite ring machining device for automatic tool changing is basically the same as that of the above embodiment, except that the mounting frame 2 includes a rotating shaft 21 and a rotating cutter 22, wherein the rotating shaft 21 penetrates through the supporting seat 1 to be connected with the rotary driver 3 and is rotatably connected with the supporting seat 1; the rotary cutterhead 22 is connected with one end of the rotary shaft 21 far away from the rotary driver 3 and is detachably connected with the cutter 6, and a plurality of mounting grooves 221 matched with the cutter 6 are uniformly formed in the circumferential direction of the rotary cutterhead 22.

In this embodiment, the rotary shaft 21 has a cylindrical structure which is convenient for sealing in the circumferential direction, and the structure can be rotated and axially moved, so that the conventional structure adopts a box beam structure, sealing is difficult, and the cylindrical structure can be provided with an oil seal, a dust seal, an O-ring and the like, so that the structure is very easy to realize. Illustratively, a sealing gasket is arranged at the connecting position between the rotating shaft 21 and the supporting seat 1, and the sealing gasket can be a rubber gasket. The rotary shaft 21 is connected to the rotary actuator 3 via a coupling 8. The rotary cutterhead 22 is of circular configuration.

In this embodiment, four cutters 6 are uniformly arranged along the circumferential direction of the rotary cutterhead 22, four mounting grooves 221 are formed, four cutters 6 can be mounted at a time during working, and the four cutters 6 can sequentially perform processing operation, so that the operation time is prolonged, and the operation efficiency is improved.

As another embodiment of the present invention, the structure of the graphite ring machining device for automatic tool changing is basically the same as that of the above embodiment, except that the limiting assembly 4 includes a positioning driver 41, a positioning chuck 42, and a positioning pin 43, where the positioning driver 41 is connected with the supporting seat 1 and is disposed through the supporting seat 1; the positioning chuck 42 is connected with the rotary shaft 21, a plurality of clamping grooves 421 are formed in the circumferential direction of the positioning chuck 42, and the clamping grooves 421 are in one-to-one correspondence with the mounting grooves 221; the positioning pin 43 is connected to the positioning driver 41 and engaged with the positioning chuck 42, and the positioning pin 43 is fitted into the locking groove 421.

In this embodiment, the positioning pin 43 and the clamping groove 421 are both tapered structures; the positioning drivers 41 are provided with two positioning pins 43 which are symmetrically arranged on two sides of the supporting seat 1, and the positioning pins 43 are in one-to-one correspondence with the positioning drivers 41. The positioning driver 41 may be an air cylinder, and the positioning driver 41 drives the positioning pin 43 to move, so that the positioning pin 43 is clamped with the clamping groove 421 on the positioning chuck 42, the locking and fixing of the positioning chuck 42 are realized, and the positioning pin 43 and the clamping groove 421 are matched to bear large rotation torque and impact and cannot impact the rotation driver 3.

As another embodiment of the present invention, the structure of the graphite ring machining device for automatic tool changing is basically the same as that of the above embodiment, and the difference is that the supporting base 1 comprises a base 11 and a mounting base 12, wherein the base 11 is connected with the rotary driver 3 and the positioning driver 41 at the same time and is rotatably connected with the rotating shaft 21, the base 11 is connected with the feeding device, the positioning driver 41 penetrates through the base 11 and is connected with the positioning pin 43, the base 11 is provided with a control groove 111, the positioning pin 43 and the positioning chuck 42 are both arranged in the control groove 111, and the base 11 is used for being fixed on the feeding device and supporting and fixing the rotary driver 3 and the positioning driver 41; the mounting base 12 is connected with the base 11 and is rotatably connected with the rotary shaft 21, and the rotary shaft 21 sequentially penetrates through the mounting base 12 and the base 11 and is fixedly connected with the rotary driver 3.

In the present embodiment, the bearing housing 7 is provided between the rotation shaft 21 and the base 11 and the mount 12. The bearing seat 7 is internally provided with two angular contact bearings which are arranged back to back, so that the bearing seat 7 can bear large axial force, has strong axial rigidity and high processing precision, is a structure for conveniently installing an axial sealing device, and can effectively prevent the bearing from being polluted because a large amount of silicon powder exists in the working environment of equipment, so that the sealing device is conveniently installed in the bearing seat 7; the base 11 and the mounting seat 12 are provided with a plurality of through holes 122 for reducing the overall weight of the supporting seat 1 while ensuring the structural stability, and the mounting seat is convenient to mount and use.

As another embodiment of the present application, the structure of the graphite ring processing apparatus with automatic tool changing is basically the same as that of the above embodiment, and the difference is that the limiting assembly 4 further includes a limiting seat 44 and a tensioning sleeve 45, wherein the limiting seat 44 is fixedly connected with the base 11 and is disposed in the control slot 111, the limiting seat 44 is slidably connected with the positioning pin 43 and corresponds to the positioning pin 43 one by one, and the limiting seat 44 is provided with a sliding hole 441 adapted to the positioning pin 43; the tension sleeve 45 is disposed between the positioning chuck 42 and the rotating shaft 21 for limiting the relative position between the positioning chuck 42 and the rotating shaft 21. The rotary shaft 21 and the positioning chuck 42 are connected by adopting a tensioning sleeve 45, so that the rotary shaft 21 and the positioning chuck 42 are conveniently installed and fixed, and the angle of the rotary cutter head 22 is conveniently adjusted. The tensioning sleeve 45 has a conical structure. It is within the scope of the present application to achieve the performance effects described above with respect to the tension sleeve 45.

As another embodiment of the present invention, the structure of the graphite ring processing apparatus with automatic tool changing is basically the same as that of the above embodiment, and the difference is that the control assembly 5 includes an angle detecting disc 51, a monitoring sensor 52, and a controller, wherein the angle detecting disc 51 is fixedly connected with the rotating shaft 21, the mounting seat 12 is provided with a rotating cavity 121, and the angle detecting disc 51 is disposed in the rotating cavity 121; the monitoring sensor 52 is connected with the mounting seat 12 and electrically connected with the angle detection disc 51, and is used for acquiring the rotation angle of the rotary shaft 21; the controller is electrically connected to the rotary drive 3, the positioning drive 41, the angle detection disc 51 and the monitoring sensor 52 at the same time for acquiring and processing data monitored by the angle detection disc 51 and the monitoring sensor 52.

In this embodiment, the controller is configured to output on-off signals of the positioning driver 41 and the rotary driver 3, and control on-off of the positioning driver 41 and the rotary driver 3 according to the angle change data monitored by the monitoring sensor 52. The angle detection plate 51 and the monitoring sensor 52 cooperate with the rotary actuator 3 to ensure the rotation angle and accuracy of the rotary shaft 21.

The device adopts the rotary driver 3 to drive the rotary shaft 21 through the coupler 8 to drive the rotary cutter head 22 to rotate, through the angle detection disc 51 arranged on the rotary shaft 21, the direction of the cutter 6 is detected by matching with the monitoring sensor 52, after rotating in place, the control state of the rotary driver 3 becomes floating, the floating state is the preliminary work of positioning, the operation is used for avoiding the interference of the rotary driver 3 and the positioning pin 43 due to the precision problem, at the moment, the positioning drivers 41 on two sides drive the conical positioning pin 43 to lock the positioning chuck 42, the positioning pin 43 and the limiting seat 44 are in sliding tight fit, namely, the limiting seat 44 limits the positioning pin 43 to move only axially without clearance, the state is convenient for transmitting torque, the positioning chuck 42 is fixed, an oil groove is arranged in the limiting seat 44, and the oil groove is used for lubrication and prevents the positioning pin 43 from being blocked axially. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. What is not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic tool changing graphite ring processing device, comprising:

The supporting seat (1) is used for being connected with the feeding device;

The mounting frame (2) is rotationally connected with the supporting seat (1), and a plurality of cutters (6) are arranged on the mounting frame (2);

The rotary driver (3) is connected with the supporting seat (1) and the mounting frame (2) and is used for driving the mounting frame (2) to rotate;

the limiting assembly (4) is connected with the supporting seat (1) and the mounting frame (2) at the same time and used for limiting the rotation of the mounting frame (2);

And the control assembly (5) is electrically connected with the rotary driver (3) and the limiting assembly (4) and is connected with the supporting seat (1) and used for controlling and acquiring the rotation angle of the mounting frame (2).

2. An automatic tool changing graphite ring machining device according to claim 1, characterized in that the mounting frame (2) comprises:

A rotating shaft (21) penetrating through the supporting seat (1) and connected with the rotary driver (3) and rotationally connected with the supporting seat (1);

The rotary cutterhead (22) is connected with one end, far away from the rotary driver (3), of the rotary shaft (21) and is detachably connected with the cutter (6), and a plurality of mounting grooves (221) matched with the cutter (6) are uniformly formed in the circumferential direction of the rotary cutterhead (22).

3. An automatic tool changing graphite ring processing apparatus according to claim 2, wherein the limit assembly (4) comprises:

A positioning driver (41) connected to the support base (1) and penetrating through the support base (1);

The positioning chuck (42) is connected with the rotary shaft (21), a plurality of clamping grooves (421) are formed in the circumferential direction of the positioning chuck (42), and the clamping grooves (421) are in one-to-one correspondence with the mounting grooves (221);

And a positioning pin (43) connected with the positioning driver (41) and engaged with the positioning chuck (42), wherein the positioning pin (43) is matched with the structure of the clamping groove (421).

4. A graphite ring machining device with automatic tool changing according to claim 3, characterized in that the support base (1) comprises:

The base (11) is connected with the rotary driver (3) and the positioning driver (41) at the same time and is rotationally connected with the rotary shaft (21), the base (11) is connected with the feeding device, the positioning driver (41) penetrates through the base (11) and is connected with the positioning pin (43), a control groove (111) is formed in the base (11), and the positioning pin (43) and the positioning chuck (42) are both arranged in the control groove (111);

The mounting seat (12) is connected with the base (11) and is rotationally connected with the rotating shaft (21), and the rotating shaft (21) sequentially penetrates through the mounting seat (12) and the base (11) to be fixedly connected with the rotary driver (3).

5. The automatic tool changing graphite ring processing apparatus as set forth in claim 4, wherein the limit assembly (4) further includes:

The limiting seats (44) are connected with the base (11) and are arranged in the control groove (111), the limiting seats (44) are connected with the positioning pins (43) in a sliding mode and correspond to the positioning pins (43) one by one, and sliding holes (441) matched with the positioning pins (43) are formed in the limiting seats (44);

And a tension sleeve (45) arranged between the positioning chuck (42) and the rotating shaft (21) and used for limiting the relative position between the positioning chuck (42) and the rotating shaft (21).

6. An automatic tool changing graphite ring processing apparatus according to claim 5, wherein said control assembly (5) comprises:

the angle detection disc (51) is fixedly connected with the rotary shaft (21), a rotary cavity (121) is formed in the mounting seat (12), and the angle detection disc (51) is arranged in the rotary cavity (121);

A monitoring sensor (52) connected to the mounting base (12) and electrically connected to the angle detection plate (51) for acquiring the rotation angle of the rotation shaft (21);

And the controller is electrically connected with the rotary driver (3), the positioning driver (41), the angle detection disc (51) and the monitoring sensor (52) at the same time and is used for acquiring and processing data monitored by the angle detection disc (51) and the monitoring sensor (52).

7. A graphite ring machining apparatus with automatic tool changing according to claim 3, characterized in that the positioning pin (43) and the clamping groove (421) are both of conical structure; the positioning drivers (41) are arranged at two sides of the supporting seat (1) symmetrically, and the positioning pins (43) are in one-to-one correspondence with the positioning drivers (41).

8. The graphite ring machining device with automatic tool changing according to claim 4, characterized in that the tool (6) is uniformly provided with four in the circumferential direction of the rotary cutterhead (22); the base (11) and the mounting seat (12) are provided with a plurality of through holes (122).

9. The graphite ring machining device with automatic tool changing according to claim 4, wherein bearing seats (7) are arranged between the rotating shaft (21) and the base (11) and the mounting seat (12).

10. An automatic tool changing graphite ring processing apparatus according to any one of claims 2-9, wherein the swivel shaft (21) is connected to the rotary drive (3) by means of a coupling (8).