Polishing mill equipment

Abstract

The utility model discloses polishing grinding machine equipment which can be used for processing concave surfaces of 3D (three-dimensional) products, the equipment comprises at least one station arranged on a machine table, and each station comprises an X-axis transmission assembly, a Y-axis transmission assembly, a Z-axis transmission assembly, a chain type tool magazine and a jig for positioning and placing the products; the jig is installed on the Y-axis transmission assembly. The Z-axis transmission assembly is mounted on the X-axis transmission assembly; the polishing main shaft is installed on the Z-axis transmission assembly so as to move up and down along the Z axis. The chain type tool magazine is used for containing various tools of different types and moving the appropriate tools to the position below the polishing main shaft so as to achieve automatic tool taking / returning. According to the multi-station polishing machine, multi-station simultaneous machining can be achieved, the positions of the polishing main shaft and a product can be controlled through the X-axis, Y-axis and Z-axis transmission assembly, a cutter can be automatically taken or returned in the machining process, the cutter can be replaced at will, and the machining efficiency and the machining yield are greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of 3D product processing, in particular to a polishing grinder device. Background Art

[0002] With the development of science and technology and technological innovation, various novel products have appeared in the public's field of vision. Therefore, manufacturing equipment is also constantly updated and iterated. The polishing of the bottom and side walls of the concave part of 3D products has always been one of the pain points in the polishing industry, which is manifested in low processing efficiency and processing yield.

[0003] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a polishing grinding machine device in view of the above-mentioned defects of low processing efficiency and low processing yield in the prior art.

[0005] The technical solution adopted by the utility model to solve the technical problem is: constructing a polishing grinding machine device that can be used to process the concave surface of a 3D product, the device includes at least one workstation arranged on a machine table, the workstation includes an X-axis transmission assembly, a first Y-axis transmission assembly, a Z-axis transmission assembly, a chain tool magazine, and a fixture for positioning and placing the product;

[0006] The jig is installed on the first Y-axis transmission assembly to achieve forward and backward movement along the Y-axis; the Z-axis transmission assembly is installed on the X-axis transmission assembly and can move left and right along the X-axis under the drive of the X-axis transmission assembly; the polishing spindle for assembling tool processing products is installed on the Z-axis transmission assembly to achieve up and down movement along the Z-axis; the chain tool magazine is used to place a variety of different types of tools and move the appropriate tool to the bottom of the polishing spindle to achieve automatic retrieval / return of the tool.

[0007] Furthermore, in the polishing grinding machine equipment of the present invention, the chain tool magazine includes a second Y-axis transmission assembly, a first motor, a first motor seat, a sprocket, an endless chain, and a plurality of tool mounting structures;

[0008] The first motor is fixed to the first motor base, and the first motor base is provided with a cantilever extending along the Y-axis direction toward the direction close to the first Y-axis transmission assembly. The top of the cantilever is provided with an annular slide rail that slides with the annular chain. The annular chain is placed flat on the cantilever based on the annular slide rail. A plurality of tool mounting structures are arranged at intervals along the annular chain and mounted on the annular chain. The annular chain is engaged with the sprocket, and the sprocket is coaxially connected to the first motor so as to be rotated under the drive of the first motor, thereby driving the annular chain to rotate and switch the appropriate tool.

[0009] The first motor base is connected to the second Y-axis transmission assembly so as to move forward and backward along the Y-axis under the drive of the second Y-axis transmission assembly to achieve the extension or retraction of the tool.

[0010] Furthermore, in the polishing grinding machine equipment described in the present invention, the second Y-axis transmission assembly includes a second motor and a first Y-axis screw extending along the Y-axis, a first Y-axis linear slide, and a first Y-axis slide. The second motor is fixed on the machine platform and coaxially connected to the first Y-axis screw. The first motor seat is fixed on the first Y-axis slide. The first Y-axis linear slide is arranged on the machine platform. The first Y-axis slide is connected to the screw nut of the first Y-axis screw and slides with the first Y-axis linear slide.

[0011] Furthermore, in the polishing grinding machine of the present invention, a pair of columns and a crossbeam extending along the X-axis and connected between the pair of columns are fixed on the machine platform, and the pair of columns are arranged opposite to each other along the X-axis direction;

[0012] The top of the machine is divided into a dry area and a wet area arranged along the Y-axis direction. The first Y-axis transmission assembly is installed in the wet area, the X-axis transmission assembly is fixed on the side of the beam facing the wet area, and the Z-axis transmission assembly is connected to the X-axis transmission assembly and is located in the space above the first Y-axis transmission assembly; the chain tool magazine is installed in the dry area and is lower than the beam so that the tool can be moved from under the beam to under the polishing spindle.

[0013] Furthermore, in the polishing grinding machine equipment described in the present invention, the Z-axis transmission assembly includes a third motor, a Z-axis slide connected to the third motor through a Z-axis linear transmission mechanism, and a drag strip for protecting the water pipe configured for the polishing spindle. The polishing spindle is vertically fixed on the Z-axis slide to realize Z-axis movement, and the fixed end of the drag strip is connected to the crossbeam and the movable end is fixed on the Z-axis slide.

[0014] Furthermore, in the polishing grinder equipment described in the present invention, the Z-axis transmission assembly also includes a first waterproof cover, the Z-axis linear transmission mechanism, the Z-axis slide, and the polishing spindle are arranged in the first waterproof cover, the third motor is installed on the top of the first waterproof cover and passes through the first waterproof cover to be connected to the Z-axis linear transmission mechanism, a motor protective cover is also installed outside the third motor for protection, the drag strip passes through the top of the first waterproof cover and is connected to the crossbeam, a spindle protective cover is also installed outside the polishing spindle for protection, and a Z-axis accordion cover is arranged between the Z-axis slide and the first waterproof cover to protect the Z-axis linear transmission mechanism.

[0015] Furthermore, in the polishing grinding machine equipment described in the present invention, the first Y-axis transmission assembly includes a second waterproof cover, a fourth motor arranged in the second waterproof cover and a Y-axis linear transmission mechanism connected to the fourth motor, a Y-axis slide connected to the Y-axis linear transmission mechanism, and a Y-axis accordion cover; sliding windows matching the sliding stroke of the Y-axis slide are arranged on the left and right sides of the second waterproof cover, and both sides of the Y-axis slide extend from the sliding windows to install the jig; the Y-axis accordion cover is arranged in the sliding window and connected to the Y-axis slide and the second waterproof cover, and is used to close the sliding window by changing its length as the Y-axis slide moves.

[0016] Furthermore, in the polishing grinding machine equipment described in the present invention, the X-axis transmission assembly includes a fifth motor, an X-axis screw extending along the X-axis and an X-axis linear slide, and an X-axis slide. The fifth motor is fixed on the crossbeam and coaxially connected to the X-axis screw. The X-axis linear slide is arranged on the crossbeam. The X-axis slide is connected to the screw nut of the X-axis screw and slides with the X-axis linear slide. The Z-axis transmission assembly is fixed on the X-axis slide.

[0017] Furthermore, in the polishing grinding machine equipment described in the present invention, there are multiple workstations, and the multiple workstations are arranged at intervals along the X-axis direction; the X-axis linear slide rail is shared by multiple X-axis transmission assemblies.

[0018] Furthermore, in the polishing grinding machine equipment described in the present invention, the jig is a vacuum adsorption jig, and a three-dimensional force sensor is installed underneath it to feedback the pressure during polishing to assist in pressure compensation.

[0019] The polishing grinding machine equipment of the present invention has the following beneficial effects: the present invention can process multiple stations simultaneously, can control the position of the polishing spindle and the product through the XYZ axis transmission component, and can automatically take out / return the tool during the processing, and can replace the tool at will. Therefore, when processing the concave surface of 3D products, the processing position and processing tool can be flexibly adjusted based on the three-axis transmission component and the chain tool magazine, and the processing efficiency and processing yield are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only embodiments of the present invention. Those skilled in the art can obtain other drawings based on the provided drawings without inventive work.

[0021] Figure 1 It is a structural diagram of the utility model polishing grinder equipment;

[0022] Figure 2 This is a schematic diagram of the three-axis transmission principle of the polishing grinding equipment of the utility model;

[0023] Figure 3 It is a structural diagram of the chain tool magazine;

[0024] Figure 4 It is a structural diagram of the Z-axis transmission assembly;

[0025] Figure 5 This is an exploded view of the Z-axis drive assembly;

[0026] Figure 6 It is a structural diagram of the first Y-axis transmission assembly. DETAILED DESCRIPTION

[0027] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the relevant drawings. Typical embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0028] refer to Figure 1-2 5. The polishing mill apparatus of this embodiment can be used to process concave surfaces of 3D products. The apparatus includes six workstations disposed on a machine platform 1. Of course, it is understood that the number of workstations may be adjusted in other embodiments. In this embodiment, the X-axis, Y-axis, and Z-axis directions are defined as the left-right, front-back, and up-down directions of the machine platform 1.

[0029] Each workstation includes an X-axis drive assembly 2, a first Y-axis drive assembly 3, a Z-axis drive assembly 4, a chain tool magazine 5, and a jig 7 for positioning and placing products. The jig 7 is mounted on the first Y-axis drive assembly 3 to enable forward and backward movement along the Y-axis. The Z-axis drive assembly 4 is mounted on the X-axis drive assembly 2 and can move left and right along the X-axis under the drive of the X-axis drive assembly 2. A polishing spindle 8, used to assemble a tool 510 for processing products, is mounted on the Z-axis drive assembly 4 to enable vertical movement along the Z-axis. The chain tool magazine 5 is used to store a variety of different types of tools 510 and move the appropriate tool 510 under the polishing spindle 8 to automatically retrieve and return the tool 510.

[0030] Among them, the machine 1 is fixed with a pair of columns 11 and a crossbeam 12 extending along the X-axis and connected between the tops of the pair of columns 11. The machine 1, columns 11, and crossbeam 12 are all made of castings, and the equipment has high precision and stability. The pair of columns 11 are arranged opposite each other along the X-axis direction. The top of the machine 1 is divided into a dry area without grinding water and a wet area with grinding water arranged along the Y-axis direction. The dry area is behind the wet area. Specifically, an independent water tank is designed, and the drainage design uses the crossbeam as the dividing line to separate dry and wet areas. The front side of the crossbeam is the wet area, and the rear side of the crossbeam is the dry area. The ejected grinding water flows through the guide groove in the wet area to the centralized water supply or independent filter water tank, which can effectively reduce the accumulation of grinding water, reduce grinding loss, and facilitate the cleaning of the machine. The first Y-axis transmission assembly 3 is installed in the wet area, the X-axis transmission assembly 2 is fixed on the side of the beam 12 facing the wet area, the Z-axis transmission assembly 4 is connected to the X-axis transmission assembly 2 and is located in the space above the first Y-axis transmission assembly 3; the chain tool magazine 5 is installed in the dry area and lower than the beam 12 so that the tool 510 can be moved from under the beam 12 to under the polishing spindle 8.

[0031] refer to Figure 3 The chain tool magazine 5 includes a second Y-axis transmission assembly 50, a first motor 52, a first motor seat 51, a sprocket 53, an endless chain 54, and multiple tool mounting structures 55.

[0032] The first motor 52 is fixed to the first motor base 51, with its rotating shaft facing upward. The first motor base 51 is provided with a cantilever 521 extending from its top along the Y-axis direction toward the direction close to the first Y-axis transmission assembly 3. The top of the cantilever 521 is provided with an annular slide rail that slides with the annular chain 54. The annular chain 54 is placed flat on the cantilever 521 based on the annular slide rail. The first motor 52 is always in the dry area, and the cantilever 521 can extend above the wet area to realize the removal / return of the tool. The annular slide rail and the annular chain 54 are specifically runway-type. The arc corner part at the rear of the annular chain 54 is engaged with the sprocket 53, and the sprocket 53 is coaxially connected to the first motor 52 for rotating under the drive of the first motor 52, thereby driving the annular chain 54 to rotate and switch the appropriate tool 510. Multiple tool mounting structures 55 are spaced apart and mounted on the endless chain 54. The tool mounting structure 55 closest to the first Y-axis drive assembly 3, i.e., the frontmost tool mounting structure 55, is selected for use with the polishing spindle 8 to return or remove the tool. The tool mounting structure 55 is vertically arranged, with the tool 510 inserted vertically downward into the tool mounting structure 55. This tool return or removal utilizes established pneumatic tool changing technology, which is not an improvement of the present invention. Pneumatic tool changing is a mature technology and will not be discussed further.

[0033] After the target tool mounting structure 55 is rotated to the front by the rotation of the first motor 52, it is necessary to extend it to the bottom of the polishing spindle 8 to remove the tool or return the tool, and it needs to be evacuated after the removal or return of the tool is completed. Therefore, the first motor seat 51 is connected to the second Y-axis transmission assembly 50 so as to move back and forth along the Y-axis under the drive of the second Y-axis transmission assembly 50 to achieve the extension or retraction of the tool 510. Specifically, the second Y-axis transmission assembly 50 includes a second motor 56 and a first Y-axis screw rod 57 extending along the Y-axis and a plurality of first Y-axis linear slides 59 and a first Y-axis slide 58. The second motor 56 is fixed on the machine 1 and is coaxially connected to the rear end of the first Y-axis screw rod 57. The first motor seat 51 is fixed on the first Y-axis slide 58. A plurality of the first Y-axis linear slides 59 are arranged on the machine 1, arranged along the X-axis, and located on both sides of the first Y-axis screw rod 57. The first Y-axis slide 58 is connected to the screw nut of the first Y-axis screw 57 and is slidably engaged with the first Y-axis linear guide rail 59 .

[0034] It is understood that the second Y-axis transmission assembly 50 can be shared by multiple chain tool magazines 5, the first Y-axis slide 58 extends along the X-axis direction across multiple workstations, and multiple first motor mounts 51 are installed on the first Y-axis slide 58 at intervals along the X-axis direction. Of course, if it is desired that each workstation operate completely independently and retrieve tools independently, the second Y-axis transmission assembly 50 can be designed to be used by a single chain tool magazine 5.

[0035] refer to Figure 4-5 The Z-axis transmission assembly 4 includes a third motor, a Z-axis slide 49 connected to the third motor via a Z-axis linear transmission mechanism, and a drag bar 41 for protecting the grinding water pipe configured for the polishing spindle 8. The Z-axis linear transmission mechanism can be a lead screw and is guided by a linear guide rail. The lead screw is coaxially connected to the third motor. The Z-axis slide 49 is fixed to the lead screw nut and also slides with the linear guide rail. The polishing spindle 8 is vertically fixed to the Z-axis slide 49 to achieve Z-axis movement. The fixed end of the drag bar 41 is connected to the crossbeam 12, and the movable end is fixed to the Z-axis slide 49.

[0036] Because the Z-axis transmission assembly 4 is above the wet area after all, it is best to provide waterproof protection. For this reason, preferably, the Z-axis transmission assembly 4 in this embodiment also includes a first waterproof cover, which is formed by the bottom shell 48, the side waterproof cover 45 and the front waterproof cover 46. The Z-axis linear transmission mechanism, the Z-axis slide 49 and the polishing spindle 8 are arranged in the first waterproof cover, and the third motor is installed on the top of the first waterproof cover and is connected to the Z-axis linear transmission mechanism through the first waterproof cover. A motor protective cover 43 is also installed outside the third motor for protection. The drag strip 41 passes through the top of the first waterproof cover and is connected to the crossbeam 12. A spindle protective cover 44 is also installed outside the polishing spindle 8 for protection. The motor protective cover 43 passes through the bottom of the first waterproof cover, and the part that passes through is opened and a button sheet metal is installed by screws, and an operating button 47 is installed on the button sheet metal. A Z-axis accordion cover 410 is provided between the Z-axis slide 49 and the first waterproof cover to protect the Z-axis linear transmission mechanism.

[0037] refer to Figure 6The first Y-axis transmission assembly 3 includes a second waterproof cover 31, a fourth motor arranged in the second waterproof cover 31 and a Y-axis linear transmission mechanism connected to the fourth motor, a Y-axis slide 32 connected to the Y-axis linear transmission mechanism, and a Y-axis accordion cover 33. The Y-axis linear transmission mechanism can also be a second Y-axis screw and cooperate with the second Y-axis linear guide for guidance. The second Y-axis screw is coaxially connected to the fourth motor. The Y-axis slide 32 is fixed on the screw nut of the second Y-axis screw and also slides with the second Y-axis linear guide. The left and right sides of the second waterproof cover 31 are provided with sliding windows that match the sliding stroke of the Y-axis slide 32. The two sides of the Y-axis slide 32 extend from the sliding windows to install the jig 7. Specifically, the parts of the Y-axis slide 32 extending from the sliding windows on both sides are respectively installed with heightening bars 34. The height of the two heightening bars 34 is greater than the top thickness of the second waterproof cover 31. The mounting platform 35 is fixed on the two heightening bars 34, and the jig 7 is fixed on the mounting platform 35. The jig 7 is a vacuum jig with a three-dimensional force sensor mounted underneath. For example, the three-dimensional force sensor can be mounted on the bottom of the jig 7 or on top of the mounting platform 35. The Y-axis accordion cover 33 is disposed within the sliding window. The front and rear edges of the Y-axis accordion cover 33 are connected to the Y-axis slide 32 and the second waterproof cover 31, respectively, and are configured to change length as the Y-axis slide 32 moves to close the sliding window.

[0038] Continue to refer Figure 2 The X-axis transmission assembly 2 includes a fifth motor, an X-axis screw 23 extending along the X-axis, an X-axis linear slide 21, and an X-axis slide 22. The X-axis linear slide 21 is shared by multiple X-axis transmission assemblies 2. It can also be understood that the X-axis linear slides 21 of all workstations are integrally connected to form a linear slide. The fifth motor is fixed to the crossbeam 12 and coaxially connected to the X-axis screw 23. The X-axis linear slide 21 is set on the crossbeam 12. The X-axis slide 22 is connected to the screw nut of the X-axis screw 23 and slides with the X-axis linear slide 21. The Z-axis transmission assembly 4 is fixed to the X-axis slide 22.

[0039] In this embodiment, each polishing head is equipped with a tool magazine to realize automatic tool change. Therefore, when polishing products, appropriate parameters can be used for processing according to the incoming material conditions of the products. The machine has good stability, and even different tools can be replaced according to the characteristics of the processed parts during the processing of the same product for targeted processing. Therefore, the processed products are of high quality; the polishing head of each polishing spindle 8 is equipped with a tool magazine to realize automatic tool change, 6 groups of independent control of the polishing spindle, 6 groups of independent control of the X-axis transmission components, 6 groups of independent control of the Y-axis transmission components, and 6 groups of independent control of the Z-axis transmission components. In this way, each polishing head has independent X / Y / Z axis control, and the X / Y / Z axis of each polishing head is independently compensated according to different pressures; the presence of the three-dimensional force sensor makes it possible to independently compensate the X / Y / Z axis of each polishing head according to different pressures. The three-dimensional force sensor has a fast response speed, high precision of the resistance strain principle, and good temperature characteristics. The products processed by the process of concave polishing, side wall polishing, and bottom plane polishing have high quality and high efficiency.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an element centered at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only. Terms containing ordinal numbers such as "first" and "second" used in this specification may be used to describe various constituent elements, but these constituent elements are not limited by these terms. The purpose of using these terms is only to distinguish one constituent element from other constituent elements. For example, without departing from the scope of the present invention, the first constituent element may be named the second constituent element, and similarly, the second constituent element may also be named the first constituent element.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0042] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A polishing mill device can be used to process the concave surface of 3D products, characterized in that: The equipment includes at least one workstation arranged on a machine platform, and the workstation includes an X-axis transmission assembly, a first Y-axis transmission assembly, a Z-axis transmission assembly, a chain tool magazine, and a fixture for positioning and placing products; The jig is installed on the first Y-axis transmission assembly to achieve forward and backward movement along the Y-axis; the Z-axis transmission assembly is installed on the X-axis transmission assembly and can move left and right along the X-axis under the drive of the X-axis transmission assembly; the polishing spindle for assembling tool processing products is installed on the Z-axis transmission assembly to achieve up and down movement along the Z-axis; the chain tool magazine is used to place a variety of different types of tools and move the appropriate tool to the bottom of the polishing spindle to achieve automatic retrieval / return of the tool.

2. The polishing mill equipment according to claim 1, characterized in that, The chain tool magazine includes a second Y-axis transmission assembly, a first motor, a first motor seat, a sprocket, an endless chain, and a plurality of tool mounting structures; The first motor is fixed to the first motor base, and the first motor base is provided with a cantilever extending along the Y-axis direction toward the direction close to the first Y-axis transmission assembly. The top of the cantilever is provided with an annular slide rail that slides with the annular chain. The annular chain is placed flat on the cantilever based on the annular slide rail. A plurality of tool mounting structures are arranged at intervals along the annular chain and mounted on the annular chain. The annular chain is engaged with the sprocket, and the sprocket is coaxially connected to the first motor so as to be rotated under the drive of the first motor, thereby driving the annular chain to rotate and switch the appropriate tool. The first motor base is connected to the second Y-axis transmission assembly so as to move forward and backward along the Y-axis under the drive of the second Y-axis transmission assembly to achieve the extension or retraction of the tool.

3. The polishing mill equipment according to claim 2, characterized in that, The second Y-axis transmission assembly includes a second motor, a first Y-axis screw extending along the Y-axis, a first Y-axis linear slide, and a first Y-axis slide. The second motor is fixed on the machine platform and coaxially connected to the first Y-axis screw. The first motor seat is fixed on the first Y-axis slide. The first Y-axis linear slide is arranged on the machine platform. The first Y-axis slide is connected to the screw nut of the first Y-axis screw and slides with the first Y-axis linear slide.

4. The polishing mill equipment according to claim 1, characterized in that, A pair of columns and a crossbeam extending along the X-axis and connected between the columns are fixed on the platform, and the pair of columns are arranged opposite to each other along the X-axis direction; The top of the machine is divided into a dry area and a wet area arranged along the Y-axis direction. The first Y-axis transmission assembly is installed in the wet area, the X-axis transmission assembly is fixed on the side of the beam facing the wet area, and the Z-axis transmission assembly is connected to the X-axis transmission assembly and is located in the space above the first Y-axis transmission assembly; the chain tool magazine is installed in the dry area and is lower than the beam so that the tool can be moved from under the beam to under the polishing spindle.

5. The polishing mill device according to claim 4, characterized in that, The Z-axis transmission assembly includes a third motor, a Z-axis slide connected to the third motor through a Z-axis linear transmission mechanism, and a drag strip for protecting the water pipe configured for the polishing spindle. The polishing spindle is vertically fixed on the Z-axis slide to achieve Z-axis movement. The fixed end of the drag strip is connected to the crossbeam, and the movable end is fixed on the Z-axis slide.

6. The polishing mill device according to claim 5, characterized in that, The Z-axis transmission assembly also includes a first waterproof cover, and the Z-axis linear transmission mechanism, Z-axis slide, and polishing spindle are arranged in the first waterproof cover. The third motor is installed on the top of the first waterproof cover and passes through the first waterproof cover to be connected to the Z-axis linear transmission mechanism. A motor protective cover is also installed outside the third motor for protection. The drag strip passes through the top of the first waterproof cover and is connected to the crossbeam. A spindle protective cover is also installed outside the polishing spindle for protection. A Z-axis accordion cover is set between the Z-axis slide and the first waterproof cover to protect the Z-axis linear transmission mechanism.

7. The polishing mill equipment according to claim 1, characterized in that, The first Y-axis transmission assembly includes a second waterproof cover, a fourth motor arranged in the second waterproof cover and a Y-axis linear transmission mechanism connected to the fourth motor, a Y-axis slide connected to the Y-axis linear transmission mechanism, and a Y-axis accordion cover; sliding windows matching the sliding stroke of the Y-axis slide are arranged on the left and right sides of the second waterproof cover, and both sides of the Y-axis slide extend from the sliding windows to install the fixture; the Y-axis accordion cover is arranged in the sliding window and connected to the Y-axis slide and the second waterproof cover, and is used to change its length as the Y-axis slide moves to close the sliding window.

8. The polishing mill device according to claim 4, characterized in that, The X-axis transmission assembly includes a fifth motor, an X-axis screw extending along the X-axis, an X-axis linear slide, and an X-axis slide. The fifth motor is fixed on the crossbeam and coaxially connected to the X-axis screw. The X-axis linear slide is arranged on the crossbeam. The X-axis slide is connected to the screw nut of the X-axis screw and slides with the X-axis linear slide. The Z-axis transmission assembly is fixed on the X-axis slide.

9. The polishing mill device according to claim 8, characterized in that, There are multiple workstations, and the multiple workstations are arranged at intervals along the X-axis direction; the X-axis linear slide rail is shared by multiple X-axis transmission components.

10. The polishing mill device according to claim 1, characterized in that: The jig is a vacuum adsorption jig, and a three-dimensional force sensor is installed underneath it to feedback the pressure during polishing to assist in pressure compensation.

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