Anti-collision and pressure-adjustable grinding and polishing integrated machine

Abstract

The application relates to a crashproof and pressure-adjustable grinding and polishing integrated machine, which comprises a machine shell, a grinding and polishing disc and a grinding and polishing head. The grinding and polishing disc is arranged on the table top of the machine shell, and a motor a for driving the grinding and polishing disc to rotate is arranged in the machine shell. A pair of arm plates on the machine shell are provided with a screw transmission mechanism matched with a motor b to drive a first sliding base to move left and right. The first sliding base is provided with a connecting seat, and the connecting seat is provided with a screw transmission mechanism matched with a motor c to drive a second sliding base to move up and down. The second sliding base is provided with an assembling seat carrying a motor d. The shaft end of the motor d is matched with a rotating shaft, and the rotating shaft is matched with a buffer assembly. The lower part of the buffer assembly is matched with the grinding and polishing head. The buffer assembly comprises a spring arranged in the vertical direction in the axial direction, so that the buffer assembly can give the grinding and polishing head a buffer in the vertical direction. The patent improves the existing ceramic grinding and polishing machine, and solves the problem that the hard contact relationship between the grinding and polishing head and the ceramic workpiece is easy to cause damage to the ceramic workpiece during the processing of the ceramic workpiece.

Description

Technical Field

[0001] This invention relates to the field of processing equipment technology for ceramic parts and products, and specifically to an integrated grinding and polishing machine that prevents excessive impact of the grinding and polishing head on the ceramic parts and can adjust the pressure acting on the ceramic parts. Background Technology

[0002] Grinding and polishing machines are used to improve the surface precision of ceramic parts. Generally, after grinding the ceramic parts, polishing is performed to further improve the surface precision of the ceramic parts. After grinding and polishing, the surface of the ceramic parts can almost achieve a mirror finish.

[0003] Traditionally, grinding and polishing of ceramic parts has been performed using either manual or machine methods. Ceramic parts are hard and brittle, making them susceptible to breakage from impacts or pressure. During the grinding and polishing process, the polishing head of the machine must remain constantly pressed against the ceramic part, creating a hard contact. With instantaneous changes in the feed rate, the pressure exerted by the polishing head on the ceramic part can surge momentarily. This sudden increase in pressure can easily damage the ceramic. Furthermore, at higher feed rates, there is a phenomenon similar to the polishing head impacting the ceramic surface, which can easily cause localized cracks or even destroy the ceramic part. Summary of the Invention

[0004] In response to the problem that traditional ceramic grinding and polishing machines, due to the hard contact between the grinding and polishing head and the ceramic workpiece, easily damage the ceramic specimens during processing, this invention provides an integrated grinding and polishing machine that is impact-resistant and has adjustable pressure. The contact between the grinding and polishing head and the ceramic workpiece is adjustable and flexible, which helps to overcome the problem that the grinding and polishing head can easily damage the ceramic specimens when the feed rate changes a large instantaneously.

[0005] The technical solution adopted by this invention to solve its technical problem is: an anti-collision and pressure-adjustable integrated grinding and polishing machine, comprising a machine housing, a grinding and polishing disc, and a grinding and polishing head. The grinding and polishing disc is mounted on the table surface of the machine housing, and a motor a for driving the grinding and polishing disc to rotate is installed at the lower part of the machine housing.

[0006] The platform of the housing is provided with a pair of arm plates, and a screw transmission mechanism matching the motor b is provided between the pair of arm plates. The screw transmission mechanism can drive the first slide to move horizontally reciprocally in the left and right direction.

[0007] A connecting seat is fixedly installed on the end face of the first slide facing the polishing disc. A screw transmission mechanism matching the motor c is provided on the connecting seat, and the screw transmission mechanism can drive the second slide to reciprocate in the vertical direction.

[0008] An assembly base is fixedly installed on the end face of the second slide facing the polishing disc, and a motor d is installed on the upper part of the assembly base to match the polishing head.

[0009] The output shaft of the motor d is fitted with a rotating shaft, the lower end of which is fitted with a buffer assembly. The lower part of the buffer assembly is fitted with the polishing head.

[0010] The buffer assembly includes a spring that extends axially in the vertical direction, enabling the buffer assembly to provide a buffer amount or buffer space to the polishing head in the vertical direction.

[0011] By presetting the elastic force applied by the spring to the polishing head, when the interaction pressure between the polishing head and the ceramic part exceeds the preset elastic force, the spring's contraction and deformation can prevent excessive instantaneous pressure from the polishing head on the ceramic part, thereby avoiding damage to the ceramic parts.

[0012] When in operation, the buffer assembly uses springs to relieve the force of the grinding disc reaction on the buffer assembly. It is a device used to reduce the instantaneous pressure of the vertical force on the grinding disc, thereby avoiding collision between the ceramic parts and the grinding disc and realizing the adjustment of the force on the ceramic parts in the vertical grinding disc direction.

[0013] Furthermore, the buffer assembly includes a sleeve, a shaft connection assembly with the upper end connected to the rotating shaft, and a polishing head connection assembly with the lower end connected to the polishing head.

[0014] An upper cover plate and a lower cover plate are fixedly installed at the upper and lower ends of the sleeve, respectively.

[0015] The rotating shaft connecting assembly matches the upper cover plate, and the lower part of the rotating shaft connecting assembly is inserted into the sleeve. The upper end of the spring is fitted onto the lower part of the rotating shaft connecting assembly. The rotating shaft connecting assembly can constrain the upper end of the spring to remain in a certain fixed position. It should be noted that the so-called fixed position does not refer to a fixed and unchanging vertical height position, but rather a fixed position corresponding to a certain time that can be adjusted within a height position range.

[0016] The polishing head connecting assembly matches the lower cover plate, and the upper part of the polishing head connecting assembly is inserted into the sleeve. The lower end of the spring is fitted onto the upper part of the polishing head connecting assembly. The polishing head connecting assembly can push the lower end of the spring to move vertically upward.

[0017] The lower part of the rotating shaft connecting assembly has a shaft hole in the vertical direction, and the upper part of the polishing head connecting assembly has a plug rod. The upper end of the plug rod is inserted into the shaft hole of the rotating shaft connecting assembly, so that the plug rod can move relative to the shaft hole in the vertical direction, thereby providing guiding constraints for the polishing head to make linear reciprocating movements in the vertical direction.

[0018] When the length of the insert rod on the polishing head connecting assembly extending into the shaft hole at the lower part of the rotating shaft connecting assembly increases, the spring can be compressed. That is, when the instantaneous pressure between the polishing head and the ceramic part is too large, it can cause the insert rod at the upper part of the polishing head connecting assembly to move upward, and the upper end of the insert rod will be relatively closer to the shaft hole on the rotating shaft connecting assembly. When the insert rod moves upward relative to the shaft hole, the polishing head connecting assembly can push the lower end of the spring upward, thereby compressing and deforming the spring.

[0019] Furthermore, the rotating shaft connecting assembly includes an upper connecting rod and a threaded ring mating on the upper connecting rod. The upper connecting rod is fixedly connected to the upper cover plate, and the threaded ring is inserted into the sleeve with its lower end face contacting the upper end of the spring. An upwardly extending shaft hole is formed from the lower end face of the upper connecting rod. This allows for either a fixed mating between the upper end of the upper connecting rod and the rotating shaft, or a fixed mating between the upper connecting rod and the upper cover plate, followed by a fixed mating between the upper end of the sleeve 51 and the rotating shaft 42.

[0020] The polishing head connecting assembly includes a lower connecting rod with a radial flange at its upper end. The insert rod is fixed to the upper end of the lower connecting rod. The lower end of the lower connecting rod extends through the shaft hole of the lower cover plate and mates with the polishing head. The radial flange on the lower connecting rod is located inside the sleeve and contacts the lower end of the spring.

[0021] The lower part of the spring is fitted onto the outside of the insert rod, and the upper part of the spring is fitted onto the lower part of the upper connecting rod. Adjusting the height of the screw ring relative to the upper connecting rod adjusts the initial compression deformation of the spring, that is, the magnitude of the downward pushing force exerted on the lower connecting rod in the initial state.

[0022] Furthermore, the rotating shaft connection assembly includes an upper connecting rod, an intermediate rod, a slider a, and a motor e that matches the wire lever. The upper connecting rod is fixedly connected to the upper cover plate, and the intermediate rod is fixed to the lower end of the upper connecting rod and inserted into the sleeve.

[0023] Multiple linear grooves, arranged alternately around the circumference, are formed on the upper wall of the intermediate rod, extending axially. The motor e is fixed to the lower part of the shaft cavity of the upper connecting rod, and a lead screw matching the motor e extends downward into the upper section of the shaft hole of the intermediate rod. A partition is formed in the middle of the shaft hole of the intermediate rod to engage with the lower end of the lead screw at the output end of the motor e. The slider a is placed in the upper section of the shaft hole of the intermediate rod, and an arm is formed on the slider a. The arm extends out of the intermediate rod via the linear groove, and the lower end face of the arm contacts the upper end of the spring. The motor e can drive the slider a to move up and down relative to the upper connecting rod and the intermediate rod, thereby adjusting the preload compression of the spring, i.e., the magnitude of the downward pushing force exerted on the lower connecting rod in the initial state.

[0024] The polishing head connecting assembly includes a lower connecting rod with a radial flange at its upper end. The insert rod is fixed to the upper end of the lower connecting rod. The lower end of the lower connecting rod extends through a shaft hole in the lower cover plate and mates with the polishing head. The radial flange on the lower connecting rod is located inside the sleeve and contacts the lower end of the spring. The lower part of the spring is fitted over the insert rod, and the upper part of the spring is fitted over the lower part of the intermediate rod.

[0025] Furthermore, an end sleeve is fixedly fitted onto the upper end of the spring, and a pressure sensor is embedded in the upper surface of the end sleeve. The pressure sensor can control the movement of the motor e according to the change in the spring compression force, so that the motor e drives the slider a to move up and down.

[0026] Furthermore, multiple radially extending convex rails are arranged alternately around the circumference on the sidewall of the through hole formed on the surface of the lower cover plate; correspondingly, a groove matching the convex rails is provided on the outer wall of the lower connecting rod corresponding to the through hole on the lower cover plate. Both the convex rails and the grooves extend vertically, and when matched, they can guide the lower connecting rod to move linearly up and down relative to the lower cover plate in the vertical direction.

[0027] Furthermore, the polishing head connecting assembly also includes a screw block, a connecting rod, and a radial buffer unit. An axially upward-extending cavity is formed on the lower end face of the lower connecting rod, and the screw block is fixedly installed within the cavity. A shaft hole is formed along the axis of the screw block, and the sidewall of the shaft hole is formed as an outwardly convex curved surface. An axial flange is formed on the inner end face of the screw block. One end of the connecting rod passes through the axial flange position of the screw block, and an annular groove is formed on the sidewall of the connecting rod at a position corresponding to the shaft hole of the screw block. The side of the annular groove is formed as an inwardly concave curved surface. After the connecting rod and the screw block are assembled together, the curved surface of the shaft hole on the screw block can contact the curved surface of the annular groove on the connecting rod.

[0028] The radial buffer unit includes a lower housing, an upper housing, and multiple lead screw transmission mechanisms consisting of slider b and motor f.

[0029] The lower housing and the upper housing are fixed to the inner side of the axial flange, vertically opposite each other. Multiple cavities are formed between the opposing surfaces of the lower housing and the upper housing. A central through-hole is formed at the center of both the lower and upper housings. The inner end of each cavity extends radially to the central through-hole. The slider b is correspondingly mounted within the cavity, and the motor f drives the slider b to reciprocate radially. The inner end of the connecting rod extends to the central through-hole. A push arm is formed at the inner end of the slider b; as the slider reciprocates, the free end of the push arm can selectively extend into the central through-hole and retract from the central through-hole into the cavity. When the free end of the push arm extends into the central through-hole, the end face of the free end of the push arm can contact the outer wall of the connecting rod.

[0030] A pressure sensor is embedded in the free end face of the push arm. The pressure sensor can detect the magnitude of the radial pressure applied by the inner end of the connecting rod to the inner end face of the push arm and control the action of the motor f, so that the motor f drives the slider b to move.

[0031] Furthermore, the push arm includes two opposing arm plates, with opposing strip grooves formed on the surfaces of the two arm plates. A vertical plate is formed on the bottom surface of the cavity of the lower housing, and the vertical plate passes through the strip grooves on the two arm plates.

[0032] The extension length of the strip groove is sufficient to meet the travel requirements of the slider b, that is, it is sufficient to make the free end faces of the two arm plates of the push arm contact the side wall of the link when the slider b moves toward the link, and at the same time, it is sufficient to make the free end faces of the two arm plates of the push arm form a radial distance with the side of the link when the slider b moves away from the link.

[0033] The end of the wire lever on the motor f corresponding to the slider b is matched with the vertical plate, and the vertical plate supports the free end of the wire lever.

[0034] Furthermore, it also includes a waste liquid recovery unit, in which one end of the waste liquid recovery pipe extends into the polishing disc, and the other end of the waste liquid recovery pipe extends into the housing and matches the waste liquid recovery tank.

[0035] The beneficial effects of this invention are as follows: This patent specifically improves upon the problem of existing ceramic grinding and polishing machines, where the contact between the grinding head and the ceramic workpiece is a hard contact, easily damaging the ceramic specimen during processing. This anti-collision and pressure-adjustable integrated grinding and polishing machine uses a flexible contact between the grinding head and the ceramic workpiece. When the instantaneous relative feed rate of the grinding head or the ceramic workpiece is large, and the instantaneous pressure on the ceramic workpiece from the feedback grinding head suddenly increases, the pressure surge can be buffered by adjusting the associated transmission mechanism of the grinding head. This helps overcome the problem of the grinding head easily damaging the ceramic workpiece when the instantaneous feed rate of the grinding head changes significantly. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the axonal structure of Embodiment 1 of this patent (viewed from the left side).

[0037] Figure 2 This is a schematic diagram of the axonal structure of Embodiment 1 of this patent (viewed from the right side).

[0038] Figure 3 This is a schematic diagram of the structure of a transmission unit that drives the grinding head to rise and fall, as shown in the embodiment.

[0039] Figure 4 This is a schematic diagram of the structure of one embodiment of the buffer assembly involved in this patent.

[0040] Figure 5 This is a schematic diagram of the second embodiment of the buffer assembly involved in this patent.

[0041] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0042] Figure 7 This is a schematic diagram (top view) of the cooperation structure between the connecting rod and the radial buffer unit in this patent.

[0043] In the diagram: 10 housing, 101 arm plate, 20 polishing disc, 30 polishing head, 40 waste liquid recovery pipe;

[0044] 1 Motor a, 2 Motor b, 21 First slide block, 3 Motor c, 31 Connecting seat, 32 Second slide block, 4 Motor d, 41 Assembly seat, 42 Rotary shaft, 5 Buffer assembly, 51 Sleeve, 52 Lower cover plate, 53 Upper cover plate, 6 Rotary shaft connecting group, 61 Upper connecting rod, 62 Intermediate rod, 621 Linear groove, 63 Slider a, 64 Motor e, 7 Grinding head connecting group, 71 Lower connecting rod, 711 Radial flange, 712 Insert rod, 72 Screw block, 721 Shaft hole, 722 Axial flange, 73 Connecting rod, 731 Annular groove, 8 Spring, 81 End sleeve, 9 Radial buffer unit, 91 Lower housing, 911 Cavity, 912 Vertical plate, 92 Upper housing, 921 Annular flange, 93 Slider b, 931 Push arm, 932 Strip groove, 94 Motor f, 941 Screw. Detailed Implementation

[0045] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0046] like Figures 1 to 7 The illustrated integrated grinding and polishing machine with anti-collision and adjustable pressure includes a housing 10, a grinding and polishing disc 20, a grinding and polishing head 30, and a waste liquid recovery unit. The clamps used to hold the ceramic parts can be selected from existing technologies. The grinding and polishing disc 20 is mounted on the table surface of the housing 10, and a motor a1 for driving the grinding and polishing disc 20 to rotate is installed at the lower part of the housing 10. One end of the waste liquid recovery pipe 40 in the waste liquid recovery unit extends into the grinding and polishing disc 20, and the other end extends into the interior of the housing 10 and is finally connected to a waste liquid recovery tank.

[0047] A pair of arm plates 101 are provided on the platform of the housing 10. A lead screw transmission mechanism matching the motor b2 is provided between the pair of arm plates 101, and the lead screw transmission mechanism can drive the first slide 21 to move horizontally reciprocally in the left and right direction. The motor b2, the lead screw transmission mechanism (including the lead lever and the guide rod) and the first slide 21 constitute a roller lead screw transmission unit.

[0048] A connecting seat 31 is fixedly installed on the end face of the first slide 21 facing the polishing disc 20. A lead screw transmission mechanism matching the motor c3 is provided on the connecting seat 31, and this lead screw transmission mechanism can drive the second slide 32 to reciprocate in the vertical direction. The motor c3, the lead screw transmission mechanism, and the second slide 32 constitute a roller lead screw transmission unit. The motor c3 is fixedly installed on the upper part of the connecting seat 31 and matches the lead screw transmission mechanism fixed on the connecting seat 31 and arranged vertically. The second slide 32 cooperates with the lead screw transmission structure to form a lead screw-slider transmission mechanism.

[0049] A mounting base 41 is fixedly installed on the end face of the second slide 32 facing the polishing disc 20. A motor d4 is mounted on the upper part of the mounting base 41, matching the polishing head 30. Specifically, the output shaft end of the motor d4 is matched with a rotating shaft 42, and the lower end of the rotating shaft 42 matches the buffer assembly 5. The lower part of the buffer assembly 5 matches the polishing head 30. The motor d4 can drive the buffer assembly 5 and the polishing head 30 to rotate synchronously through the rotating shaft 42.

[0050] The first slide 21 can carry the connecting seat 31 and move back and forth in the left and right direction, while moving the polishing head left and right. The second slide 32 can move back and forth in the vertical direction relative to the connecting seat 31. During this time, the second slide 32 can carry the mounting seat 41 and move synchronously in the vertical direction, so that the polishing head 30 moves in the vertical direction.

[0051] The buffer assembly 5 includes a spring 8 that extends axially in the vertical direction, so that the buffer assembly 5 can provide elastic buffering to the polishing head 30 in the vertical direction.

[0052] By presetting the elastic force applied by the spring 8 to the polishing head 30, when the instantaneous interaction pressure between the polishing head 30 and the ceramic part exceeds the preset elastic force, the spring 8 will contract and deform to avoid excessive instantaneous pressure applied by the polishing head 30 to the ceramic part, thereby preventing damage to the ceramic parts.

[0053] like Figure 4 , Figure 5 As shown, the buffer assembly 5 includes a sleeve 51, a shaft connecting group 6 with the upper end connected to the shaft 42, and a polishing head connecting group 7 with the lower end connected to the polishing head 30. An upper cover plate 53 and a lower cover plate 52 are fixedly installed at the upper and lower ports of the sleeve 51, respectively.

[0054] The rotating shaft connecting assembly 6 matches the upper cover plate 53, and the lower part of the rotating shaft connecting assembly 6 is inserted into the sleeve 51. The upper end of the spring 8 is fitted onto the lower part of the rotating shaft connecting assembly 6. The rotating shaft connecting assembly 6 can constrain the upper end of the spring 8 to remain in a certain fixed position. It should be noted that the so-called fixed position does not refer to a fixed and unchanging vertical height position, but rather a fixed position corresponding to a certain time that can be adjusted within a height position range.

[0055] The polishing head connecting assembly 7 is matched with the lower cover plate 52, and the upper part of the polishing head connecting assembly 7 is inserted into the sleeve 51. The lower end of the spring 8 is fitted onto the upper part of the polishing head connecting assembly 7. The polishing head connecting assembly 7 can push the lower end of the spring 8 to move vertically upward, thereby causing the spring 8 to contract.

[0056] The lower part of the rotating shaft connecting assembly 6 has a shaft hole in the vertical direction, and the upper part of the polishing head connecting assembly 7 has a rod 712. The upper end of the rod 712 is inserted into the shaft hole of the rotating shaft connecting assembly 6, allowing the rod 712 to move relative to the shaft hole in the vertical direction, thus providing guidance and constraint for the polishing head 30 to move linearly in the vertical direction. The outer diameter of the rod 712 is the same as the inner diameter of the shaft hole on the rotating shaft connecting assembly 6.

[0057] When the length of the insert 712 on the polishing head connecting assembly 7 extending into the shaft hole at the lower part of the rotating shaft connecting assembly 6 increases, the spring 8 can be compressed. That is, when the instantaneous pressure between the polishing head 30 and the ceramic part is too large, it can cause the insert 712 on the upper part of the polishing head connecting assembly 7 to move upward. The upper end of the insert 712 will be relatively closer to the shaft hole on the rotating shaft connecting assembly 6. When the insert 712 moves upward relative to the shaft hole, the polishing head connecting assembly 7 can push the lower end of the spring 8 to move upward, thereby compressing and deforming the spring 8.

[0058] The rotating shaft connecting assembly 6 is fixedly mounted on the upper cover plate 53. It can be connected by a threaded structure or by rivets or screws / bolts. Therefore, in the embodiment of this patent, the lower end of the rotating shaft 42 can be connected to the upper end of the rotating shaft connecting assembly 6 or to the upper part of the sleeve 51.

[0059] like Figure 4As shown, the rotating shaft connecting assembly 6 includes an upper connecting rod 61, with a radially extending flange (which can be multiple flanges distributed alternately around the circumference or an annular flange) provided in the middle of the upper connecting rod 61. The upper connecting rod 61 is fixedly connected to the upper cover plate 53, and the flange on the upper connecting rod 61 is inserted into the sleeve 51, with the upper end of the spring 8 contacting the lower end face of the flange.

[0060] Alternatively, a threaded ring mating with the upper connecting rod 61 can be used instead of the flange. This threaded ring matches the external thread section on the outer wall of the upper connecting rod 61, allowing adjustment of the relative position and height of the threaded ring on the upper connecting rod 61. The threaded ring is inserted into the sleeve, and the lower end face of the threaded ring contacts the upper end of the spring.

[0061] An upwardly extending shaft hole is formed on the lower end face of the upper connecting rod 61. The upper end of the upper connecting rod 61 is fixedly matched with the rotating shaft 42 as a whole, so that the rotating shaft 42 can drive the sleeve 51 and the polishing head 30 to rotate synchronously. The initial amount of compression deformation of the spring 8 can be adjusted by adjusting the height position of the screw ring relative to the upper connecting rod 61.

[0062] The polishing head connecting assembly 7 includes a lower connecting rod 71, the upper end of which has a radial flange 711. The insert rod 712 is fixed to the upper end of the lower connecting rod 71. The lower end of the lower connecting rod 71 extends through the lower cover plate 52 and matches the polishing head 30. The radial flange 711 on the lower connecting rod 71 is located inside the sleeve 51 and contacts the lower end of the spring 8. The lower part of the spring 8 is fitted outside the insert rod 712, and the upper part of the spring 8 is fitted inside the lower part of the upper connecting rod 61.

[0063] After the upper connecting rod 61 is matched with the shaft hole on the upper cover plate 53, the upper connecting rod 61 cannot rotate relative to the upper cover plate 53, nor can it move up and down relative to the upper cover plate 53. After the lower connecting rod 71 is matched with the shaft hole on the lower cover plate 52, the lower connecting rod 71 cannot rotate relative to the lower cover plate 52, but can move up and down relative to the lower cover plate 52.

[0064] like Figures 5 to 7 As shown, the rotating shaft connection assembly 6 includes an upper connecting rod 61, an intermediate rod 62, a slider a63, and a motor e64 that matches a wire lever. The upper connecting rod 61 is fixedly connected to the upper cover plate 53 as a whole, and the intermediate rod 62 is fixed to the lower end face of the upper connecting rod 61 and inserted into the sleeve 51. In the figure, the upper connecting rod 61 is a cylindrical tube with its lower end sealed, and the upper end of the intermediate rod 62 is fixedly connected to the lower end of the upper connecting rod 61 as a whole by bolts or screws.

[0065] Four linear grooves 621 are formed on the upper wall of the intermediate rod 62, which are distributed alternately around the circumference. Each of the linear grooves 621 extends downward from the upper end face of the intermediate rod 62 in the axial direction (i.e., in the vertical direction).

[0066] The motor e64 is fixed to the bottom surface of the shaft cavity of the upper connecting rod 61, and the lead lever matching the motor e64 extends downward into the upper section of the shaft hole of the intermediate rod 62. As shown in the figure, a partition is formed (or a partition is fixedly installed) in the shaft hole of the intermediate rod 62. The partition cooperates with the lower end of the lead lever at the output end of the motor e64 to support the free end of the lead lever.

[0067] The slider a63 is inserted into the upper section of the shaft hole of the intermediate rod 62, and four flanges are formed on the slider a63. Each flange extends radially outward to the outside of the intermediate rod 62 via a linear groove 621. The lower end face of the flange contacts the upper end of the spring 8. The motor e64 can drive the slider a63 to move up and down relative to the upper connecting rod 61, or relative to the intermediate rod 62, or relative to the sleeve 51, thereby adjusting the preload compression degree of the spring 8, that is, the magnitude of the downward pushing force formed on the lower connecting rod in the initial state.

[0068] The grinding head connection assembly includes a lower connecting rod 71, the upper end of which has a radial flange 711. The insert rod 712 is fixed to the upper end of the lower connecting rod 71. The insert rod 712 and the lower connecting rod 71 in the figure are integrally formed.

[0069] The lower end of the lower connecting rod 71 extends through the shaft hole on the lower cover plate 52 and matches the polishing head 30. The lower connecting rod 71 can slide up and down relative to the shaft hole on the lower cover plate 52.

[0070] The radial flange 711 on the lower connecting rod 71 is located inside the sleeve 51 and is in contact with the lower end of the spring 8.

[0071] The lower part of the spring 8 is fitted onto the outside of the insert rod 712, and the upper part of the spring 8 is fitted onto the lower part of the intermediate rod 62.

[0072] An end sleeve 81 is fixedly fitted onto the upper end of the spring 8. A pressure sensor is embedded in the upper surface of the end sleeve, and the pressure sensor can control the operation of the motor e64. Specifically, the pressure sensor embedded in the end sleeve 81 contacts the lower end surface of the edge arm of the slider a63, and can monitor the magnitude of the pressure exerted by the spring 8 on the edge arm of the slider a in the vertical direction, that is, the magnitude of the compressive force of the spring 8. The pressure sensor here is connected to the controller (all electrical components or electrical parts involved in this patent, such as various motors, are connected to the controller). When the instantaneous force between the polishing head 30 and the ceramic part is too large, the pressure sensor at this location can promptly feed back to the controller through the change in the compression force of the spring 8. The controller then quickly controls the motor e64 to drive the slider a63 to move upward. By promptly reducing the compression deformation of the spring 8, the pressure exerted by the spring on the lower connecting rod 71 (radial flange 711) is reduced, creating conditions for the polishing head 30 to move upward briefly, thus rapidly reducing the instantaneous pressure change between the polishing head 30 and the ceramic part and preventing damage to the ceramic part from the polishing head. After the brief upward movement, the slider a63 immediately moves downward to reset, restoring the downward pressure exerted by the spring 8 on the lower connecting rod 71 (radial flange 711), returning to the initial pressure.

[0073] The grinding head connecting assembly 7 also includes a screw block 72, a connecting rod 73, and a radial buffer unit 9.

[0074] The lower connecting rod 71 has an axially upward extending cavity (stepped cavity) formed on its lower end surface, and the screw block 72 is fixedly installed in the cavity. An annular axial flange 722 is formed on the inner end surface of the screw block 72.

[0075] A shaft hole 721 is formed along the axis of the screw block 72, and the sidewall of the shaft hole 721 is formed as an outwardly convex curved surface. One end of the connecting rod 73 passes through the axial flange 722 of the screw block 72, and an annular groove 731 is formed on the sidewall of the connecting rod 73 at a position corresponding to the shaft hole 721 of the screw block 72. The sidewall of the annular groove 731 is formed as an inwardly concave curved surface. After the connecting rod 73 and the screw block 72 are assembled together, the curved surface of the shaft hole 721 on the screw block 72 can contact the curved surface of the annular groove 731 on the connecting rod 73.

[0076] The lower end of the connecting rod 73 is fixedly connected to the polishing head 30.

[0077] The radial buffer unit 9 includes a lower housing 91, an upper housing 92, and two sets of lead screw transmission mechanisms consisting of sliders b93 and motors f94. In specific implementations, three, four, five, six, or more sets of the lead screw transmission mechanisms described herein can be set. Each lead screw transmission mechanism includes a motor f94 and a slider b93 that match the transmission lead screw.

[0078] The lower housing 91 and the upper housing 92 are fixed in opposite directions within the inner wall of the axial flange 722.

[0079] Two cavities 911 are formed between the opposing surfaces of the lower housing 91 and the upper housing 92. The number of cavities 911 corresponds one-to-one with the number of lead screw transmission mechanisms composed of the motor f94 and the slider b93. Simultaneously, a central through hole is formed at the center position of the lower housing 91 and the upper housing 92.

[0080] The central through hole extends radially from the inner end of the cavity 911.

[0081] The slider b93 is installed in the cavity 911, and the motor f94 drives the slider b93 to reciprocate radially. The inner end of the connecting rod 73 extends to the central through hole. In specific implementation, a section of the sidewall of the inner end of the connecting rod 73 can be a cylindrical surface or a prismatic surface.

[0082] The inner end of the slider b93 is formed with a push arm 931. As the slider b93 reciprocates, the free end of the push arm 931 can selectively extend into the central through hole and retract radially from the central through hole into the cavity 911.

[0083] When the free end of the push arm 931 extends into the central through hole, the end face of the free end of the push arm 931 can contact the outer wall (side wall) of the connecting rod 73. The end face of the free end of the push arm 931 can be formed into an arc surface, a plane, or even an irregular surface depending on whether the side wall of the inner end section of the connecting rod 73 is cylindrical or prismatic, as long as it can achieve the purpose of firmly holding the inner end of the connecting rod 73 by multiple push arms 931.

[0084] The sidewall of the shaft hole 721 of the screw block 72 is formed as a radially outward protruding curved / spherical surface to match the radially inward concave curved / spherical surface formed on the bottom surface of the annular groove 731 of the connecting rod 73. This allows the connecting rod 73 to undergo a (slight) deflection relative to the axis in the vertical direction when its inner end (upper free end) is unconstrained or insufficiently constrained, by applying radial pressure on the polishing head 30. The width of the annular groove 731 is not less than the length of the shaft hole 721, and preferably the width of the annular groove 731 is slightly greater than the length of the shaft hole 721.

[0085] A pressure sensor is embedded in the free end face of the push arm 931. The pressure sensor can detect the magnitude of the radial pressure applied by the inner end of the connecting rod 73 to the inner end face of the push arm 931 to control the action of the motor f94, so that the motor f94 drives the slider b93 to reciprocate radially.

[0086] When the polishing head 30 comes into contact with the ceramic part, radial pressure is generated between their contact surfaces. This radial pressure causes the inner free end of the connecting rod 73 to tend to deflect in the opposite direction to the axis of rotation (towards the direction of the radial force). Pressure is also generated between the inner sidewall of the connecting rod 73 and the free end face of the push arm 931. As the radial pressure between the contact surfaces of the polishing head 30 and the ceramic part changes, the pressure between the inner sidewall of the connecting rod 73 and the free end face of the push arm 931 also changes, increasing when it increases and decreasing when it decreases. When the radial pressure between the polishing head 30 and the ceramic part is too high, a pressure sensor on one of the push arms 931, which is matched to the inner periphery of the connecting rod 73, will detect the excessive pressure and control the motor f corresponding to that push arm 931 to drive the slider b to move radially away from the outer wall of the connecting rod 73. This causes the axis of the connecting rod 73 to deflect relative to the vertical direction. This instantaneous deflection provides a buffer for the excessive pressure between the polishing head 30 and the ceramic part, thus correcting the pressure. In the initial state, the free end faces of each support arm 931 are firmly pressed against the inner side wall of the connecting rod 73 to keep the axis of the connecting rod 73 in a vertical position.

[0087] The two arm plates of the push arm 931 are positioned vertically opposite each other, and a strip groove 932 is formed on the surface of the arm plate. A vertical plate 912 is formed on the bottom surface of the cavity 911 of the lower housing 91, and the vertical plate 912 passes through the strip groove 932 on the two arm plates.

[0088] The extension length of the strip groove 932 is sufficient to meet the travel requirements of the slider b93. That is, when the slider b93 moves toward the connecting rod 73, the free end faces of the two arm plates of the push arm 931 are sufficient to contact the side wall of the connecting rod 73. At the same time, when the slider b93 moves away from the connecting rod 73, the free end faces of the two arm plates of the push arm 931 are sufficient to form a radial distance with the side of the connecting rod 73.

[0089] The end of the screw 941 (wire lever) on the motor f94 that corresponds to the slider b93 is matched with the vertical plate 912, and the vertical plate 912 supports the free end of the screw 941.

[0090] An annular flange 921 is formed on the top surface of the upper housing 92, and the sidewall of the annular flange 921 is formed as a prism. The purpose of providing the annular flange 921 is to facilitate the assembly and disassembly of the upper and lower housings.

[0091] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Many aspects of the present invention can be improved without departing from the overall concept. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A shockproof and pressure-adjustable integrated grinding and polishing machine, comprising a housing, a grinding and polishing disc, and a grinding and polishing head, characterized in that: The polishing disc is mounted on the platform of the machine housing, and a motor a is installed inside the machine housing to drive the polishing disc to rotate. A pair of arm plates are provided on the platform of the machine housing, and a screw drive mechanism matching the motor b is provided between the arm plates. This screw drive mechanism can drive a first slide to move in the left-right direction. A connecting seat is fixedly mounted on the first slide, and a screw drive mechanism matching the motor c is provided on the connecting seat. This screw drive mechanism can drive a second slide to move in the vertical direction. An assembly seat is fixedly mounted on the second slide, and a motor d matching the polishing head is mounted on the upper part of the assembly seat. A rotating shaft is matched at the end of the output shaft of the motor d, and the lower end of the rotating shaft matches a buffer assembly. The lower part of the buffer assembly matches the polishing head. The buffer assembly includes a spring axially arranged in the vertical direction, so that the buffer assembly can provide a buffering amount to the polishing head in the vertical direction. The buffer assembly includes a sleeve, a shaft connecting assembly with its upper end connected to a rotating shaft, and a polishing head connecting assembly with its lower end connected to a polishing head. An upper cover plate and a lower cover plate are fixedly mounted on the upper and lower ends of the sleeve, respectively. The shaft connecting assembly matches the upper cover plate, and its lower part is inserted into the sleeve. The upper end of the spring is fitted onto the lower part of the shaft connecting assembly. The shaft connecting assembly constrains the upper end of the spring to remain in a fixed position. The polishing head connecting assembly matches the lower cover plate, and its upper part is inserted into the sleeve. The lower end of the spring is fitted onto the upper part of the polishing head connecting assembly. The polishing head connecting assembly can push the lower end of the spring to move upwards in a vertical direction. The lower part of the shaft connecting assembly has a vertical shaft hole, and the upper part of the polishing head connecting assembly has a rod inserted into the shaft hole of the shaft connecting assembly, and the rod can move relative to the shaft hole. The rotating shaft connection assembly includes an upper connecting rod and a threaded ring matched on the upper connecting rod. The upper connecting rod is fixedly connected to the upper cover plate. The threaded ring is inserted into the sleeve and the lower end face of the threaded ring contacts the upper end of the spring. An upwardly extending shaft hole is formed from the lower end face of the upper connecting rod. The polishing head connecting assembly includes a lower connecting rod with a radial flange at its upper end. The insert rod is fixed to the upper end of the lower connecting rod. The lower end of the lower connecting rod extends through the lower cover plate and matches the polishing head. The radial flange on the lower connecting rod is located inside the sleeve and contacts the lower end of the spring. The lower part of the spring is fitted outside the insert rod, and the upper part of the spring is fitted inside the lower part of the upper connecting rod. The polishing head connecting assembly further includes a screw block, a connecting rod, and a radial buffer unit; a cavity is formed on the lower end face of the lower connecting rod, and the screw block is fixedly installed in the cavity; an axial flange is formed on the inner end face of the screw block; a shaft hole is formed along the axis of the screw block, and the side wall of the shaft hole is formed as an outwardly convex curved surface; one end of the connecting rod passes through to the axial flange position of the screw block, and an annular groove is formed on the side wall of the connecting rod at a position corresponding to the shaft hole of the screw block, and the side of the annular groove is formed as an inwardly concave curved surface; the curved surface of the shaft hole on the screw block can contact the curved surface of the annular groove on the connecting rod; the radial buffer unit includes a lower housing, an upper housing, and multiple lead screw transmission mechanisms composed of sliders b and motors f; the lower housing and the upper housing are fixed to the inner side of the axial flange vertically opposite each other; the lower housing and the upper housing... Multiple cavities are formed between opposing surfaces; a central through hole is formed at the center of the lower housing and the upper housing; the inner end of the cavity extends to the central through hole; the inner end of the connecting rod extends to the central through hole; the slider b is correspondingly installed in the cavity, and the motor f can drive the slider b to reciprocate radially; a push arm is formed at the inner end of the slider b, and the free end of the push arm can selectively extend into the central through hole and retract from the central through hole into the cavity as the slider b reciprocates; the free end face of the push arm can contact the outer wall of the connecting rod; a pressure sensor is embedded in the free end face of the push arm, and the pressure sensor can detect the change in the radial pressure applied by the inner end sidewall of the connecting rod to the inner end face of the push arm and control the operation of the motor f.

2. The anti-collision and pressure-adjustable integrated grinding and polishing machine according to claim 1, characterized in that: The rotating shaft connection assembly includes an upper connecting rod, a middle rod, a slider a, and a motor e with a matching wire lever; the upper connecting rod is fixedly connected to the upper cover plate, and the middle rod is fixed to the lower end of the upper connecting rod and inserted into the sleeve; multiple linear grooves are formed on the upper wall of the middle rod, arranged alternately around the circumference; the motor e is fixed to the lower part of the shaft cavity of the upper connecting rod; the wire lever matching the motor e extends downward into the upper section of the shaft hole of the middle rod and matches a partition formed in the shaft hole of the middle rod; the slider a is inserted into the upper section of the shaft hole of the middle rod, and a wire lever is formed on the slider a. The flange arm extends out of the intermediate rod via the linear groove, and the lower end face of the flange arm contacts the upper end of the spring; the motor e can drive the slider a to move up and down; the polishing head connecting assembly includes a lower connecting rod, the upper end of which forms a radial flange, and the insert rod is fixed to the upper end of the lower connecting rod; the lower end of the lower connecting rod passes through the lower cover plate and matches the polishing head; the radial flange on the lower connecting rod is located inside the sleeve and contacts the lower end of the spring; the lower part of the spring is fitted outside the insert rod, and the upper part of the spring is fitted inside the lower part of the intermediate rod.

3. The anti-collision and pressure-adjustable integrated grinding and polishing machine according to claim 2, characterized in that: An end sleeve is fixedly fitted onto the upper end of the spring, and a pressure sensor is embedded in the upper surface of the end sleeve. The pressure sensor can control the movement of the motor e according to the change in the spring compression force, so that the motor e drives the slider a to move up and down.

4. A shockproof and pressure-adjustable integrated grinding and polishing machine according to claim 1 or 2, characterized in that: Multiple radially extending convex rails are arranged alternately around the circumference of the sidewall of the through hole formed on the surface of the lower cover plate; correspondingly, a groove matching the convex rail is provided on the outer wall of the lower connecting rod corresponding to the through hole on the lower cover plate.

5. The anti-collision and pressure-adjustable integrated grinding and polishing machine according to claim 1, characterized in that: The push arm includes two upper and lower opposing arm plates, with upper and lower opposing strip grooves formed on the surface of the two arm plates; a vertical plate is formed on the inner bottom surface of the cavity, which passes through the strip grooves on the two arm plates; the end of the lever on the motor f corresponding to the slider b matches the vertical plate.

6. The anti-collision and pressure-adjustable integrated grinding and polishing machine according to claim 1, characterized in that: It also includes a waste liquid recovery unit, in which one end of the waste liquid recovery pipe extends into the polishing disc, and the other end of the waste liquid recovery pipe extends into the housing and matches the waste liquid recovery tank.

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