A double-sided equalizing grinder and a grinding method

Abstract

This application discloses a double-sided pressure-equalizing grinding machine and grinding method, relating to the field of grinding machines. The machine includes: a frame with a grinding groove, the inner wall of which is provided with an internal gear ring; an upper grinding component mounted on the frame, having a grinding end opposite to the grinding groove; a lower grinding component disposed within the grinding groove, corresponding vertically to the upper grinding component, for cooperating with the upper grinding component to grind the workpiece; a lifting drive fixedly connected to the upper grinding component, for driving the grinding end closer to or away from the lower grinding component; and a pressure-adhesive component disposed on the upper grinding component, which applies uniform pressure to the workpiece when the lifting drive drives the upper grinding component closer to the lower grinding component. By adopting the above technical solution, the machine avoids the sudden impact on the workpiece during grinding, preventing localized excessive pressure damage to brittle materials.

Description

Technical Field

[0001] This application relates to the field of grinding machine technology, and in particular to a double-sided pressure equalizing grinding machine and grinding method. Background Technology

[0002] Double-sided grinding machines are mainly used for grinding two parallel crystals or other mechanical parts, especially for processing thin and brittle materials. They are suitable for grinding and polishing various materials such as mechanical seal rings, ceramic discs, cylinder piston rings, oil pump blade bearing end faces, and silicon, germanium, quartz crystals, graphite, sapphire, optical crystals, glass, lithium niobate, cemented carbide, stainless steel, and powder metallurgy materials. They are indispensable equipment in modern workpiece manufacturing. Double-sided grinding machines utilize upper and lower grinding discs, a sun gear, and a planetary gear to create coordinated grinding motions in four directions, achieving efficient simultaneous grinding of both upper and lower surfaces. The workpiece moves on a dedicated planetary gear, and during grinding, the workpiece's thickness must be greater than the planetary gear itself.

[0003] The related technology discloses a grinding machine, including a frame and a grinding mechanism mounted on the frame. The grinding mechanism includes an active grinding disc and a passive grinding disc mounted on the active grinding disc. The active grinding disc is connected to a motor via a transmission mechanism. A central gear is located at the center of the active grinding disc, and a gear ring is located on the outer circumference of the passive grinding disc, meshing with the central gear. A chuck is also connected to the passive grinding disc for limiting its position. Several workpieces to be ground are placed into the passive grinding disc, causing them to press against each other and fill the inner cavity of the passive grinding disc. Then, the motor is turned on, and the motor drives the active grinding disc to rotate via the transmission mechanism. The active grinding disc grinds and polishes the bottom surface of the workpieces inside the passive grinding disc.

[0004] Although the double-sided grinding machine of the related technology has achieved double-sided grinding of the workpiece, the weight of its upper plate device is directly borne by the cylinder. The cylinder drives the upper plate to move up and down through the connecting joint, which is not stable. During the pressurization process, it is easy to cause local impact, resulting in damage to brittle workpieces. Summary of the Invention

[0005] The purpose of this invention is to provide a double-sided pressure equalization grinding machine and grinding method to solve the technical problem that existing double-sided grinding machines are prone to local impact during the pressure application process, resulting in damage to brittle workpieces.

[0006] First aspect This application provides a double-sided equal-pressure grinding machine, comprising: A frame, on which a grinding groove is formed, and an internal gear ring is provided on the inner wall of the grinding groove; An upper grinding element is mounted on the frame, and the upper grinding element has a grinding end, which is disposed opposite to the grinding groove. The lower grinding part is disposed in the grinding groove and is disposed vertically corresponding to the upper grinding part. The upper grinding part is used to grind the workpiece in conjunction with the upper grinding part. A lifting drive component is fixedly connected to the upper grinding component, and the lifting drive component is used to drive the grinding end to move closer to or away from the lower grinding component; A pressure bonding component is disposed on the upper grinding component. When the lifting drive component drives the upper grinding component to approach the lower grinding component, the pressure bonding component can apply uniform pressure to the workpiece.

[0007] By adopting the above technical solution, a grinding groove is provided on the frame, allowing the lower grinding part to cooperate with the upper grinding part for grinding. The upper grinding part is installed on the top of the frame, has a grinding end, and is positioned opposite the grinding groove. The corresponding upper and lower grinding structures ensure that the workpiece is simultaneously subjected to uniform double-sided grinding force during the grinding process, avoiding the unevenness of single-sided grinding and significantly improving grinding efficiency and workpiece surface flatness. The lifting drive component, through smooth movement, avoids sudden impacts on the workpiece during the grinding process, preventing damage to brittle materials and improving the stability of the grinding process. The pressure bonding component is set on the upper grinding part, working in conjunction with the lifting drive component to achieve uniform pressure on the workpiece. By flexibly adjusting the pressure of the pressure bonding component, workpiece damage caused by localized excessive pressure is avoided.

[0008] Preferably, the upper grinding element comprises: An upper grinding bracket is fixedly connected to the lifting drive component, which is used to drive the upper grinding bracket to move closer to or away from the lower grinding component. The upper grinding disc is slidably connected to the upper grinding support along the thickness direction of the upper grinding support.

[0009] By adopting the above technical solution, the design of the upper grinding part, through the fixed connection between the upper grinding bracket and the lifting drive component, achieves precise control of the upper grinding bracket to move closer to or further away from the lower grinding part, ensuring stability during the grinding process; at the same time, the upper grinding disc is slidably connected along the thickness direction of the upper grinding bracket, allowing it to move within a certain range, so that excessive grinding force will not cause impact and damage to the workpiece, thereby improving the grinding quality and avoiding local over-grinding or under-grinding.

[0010] Preferably, the upper grinding part bracket has a mounting groove, and the pressure bonding component includes: An air pump is fixedly connected to the upper grinding bracket; An airbag is located between the upper grinding disc and the upper grinding bracket, and is disposed in the mounting groove. The air pump is connected to the airbag and is used to inflate or deflate the airbag.

[0011] By adopting the above technical solution, the air pump and the air bag are interconnected. The air pump can inflate or deflate the air bag, thereby flexibly adjusting the pressure. This design not only ensures that the workpiece is subjected to uniform pressure during the grinding process, avoiding damage to the workpiece caused by excessive local pressure, but also improves the flexibility and controllability of the grinding process.

[0012] Preferably, the lower grinding element comprises: The lower grinding disc is disposed within the grinding groove; A planetary gear is disposed on the lower grinding disc, and a placement hole is provided on the planetary gear for accommodating the workpiece to be ground. The sun gear is located at the center of the grinding groove and meshes with the planetary gear; The bottom drive unit is used to drive the sun gear to rotate circumferentially, and the planetary gear meshes with the internal gear ring.

[0013] By adopting the above technical solution, the workpiece placed on the planetary gear will move in a circular trajectory on the grinding disc, so that the workpiece can be uniformly subjected to multi-directional grinding force during the grinding process, and obtain comprehensive and uniform grinding, thereby improving the flatness of the workpiece surface.

[0014] Preferably, the lower grinding disc has mounting holes along its thickness direction. A waste liquid cleaning component is disposed in the mounting hole. The waste liquid cleaning component is used to quickly discharge the grinding fluid containing grinding chips located between the lower grinding disc and the upper grinding disc.

[0015] By adopting the above technical solution, it is possible to quickly discharge the grinding fluid after a period of use, reduce equipment wear, extend equipment service life, and reduce maintenance costs.

[0016] Preferably, the waste liquid cleaning component includes: An arc-shaped boss is slidably connected within the mounting hole, and the arc-shaped boss protrudes towards the side close to the upper grinding disc; The elastic element has one end fixedly connected to the bottom wall of the mounting hole and the other end fixedly connected to the arc-shaped boss. The lower grinding disc is provided with a collection hole, which is inclined. When the planetary gear passes the arc-shaped boss, the collection hole is connected to the mounting hole; when the planetary gear does not pass the arc-shaped boss, the collection hole is blocked by the arc-shaped boss.

[0017] By adopting the above technical solution, when the planetary gear passes the arc-shaped boss, the elastic element will press the arc-shaped boss down, opening the channel with the collection hole. Waste liquid containing grinding chips will enter the mounting hole through the collection hole and be quickly discharged. When the planetary gear leaves the arc-shaped boss, the elastic element will reset the arc-shaped boss, the collection hole will be blocked, and the channel will be closed to prevent excessive grinding fluid from being discharged.

[0018] Preferably, the lower grinding disc is further provided with a collection groove, which is connected to the collection hole. The waste liquid cleaning component also includes a vacuum generator, which is disposed on the lower grinding disc and is connected to the collection groove. The vacuum generator is used to generate negative pressure in the collection groove.

[0019] By adopting the above technical solution, the vacuum generator is used to generate negative pressure in the collection tank, thereby significantly improving the discharge efficiency of waste liquid.

[0020] Preferably, the waste liquid cleaning component further includes a drain pipe, which is embedded in the lower grinding disc. One end of the drain pipe is connected to the collection tank, and the other end is connected to the outside. A shut-off valve is provided on the drain pipe.

[0021] By adopting the above technical solution, when the grinding fluid in the collection tank contains a large amount of waste liquid, i.e. when waste liquid needs to be discharged, the shut-off valve can be opened; when discharge is not required, the shut-off valve can be closed, and the settling function of the collection tank can be used to reduce the interference of grinding chips.

[0022] Preferably, the upper grinding bracket has a threaded hole, and the lifting drive component includes: A servo motor is located on the frame and is fixedly connected to the frame. A speed reducer is connected to the servo motor for driving speed and transmitting power. A lead screw is connected to the output shaft of the reducer, and the lead screw is threaded into the threaded hole.

[0023] By adopting the above technical solution, when the servo motor starts to output rotation, it drives the reducer to decelerate and rotate. The output shaft of the reducer is connected to the lead screw, which is threaded into the threaded hole on the upper grinding bracket. When the servo motor drives the lead screw to rotate through the reducer, the lead screw rotates in the threaded hole. Due to the pitch of the thread, the rotational motion of the lead screw is then converted into the linear lifting motion of the upper grinding bracket.

[0024] Second aspect This application provides a double-sided pressure equalization grinding method, which utilizes the aforementioned double-sided pressure equalization grinding machine and includes the following steps: A lower grinding disc is provided, along with a planetary gear, a sun gear, and a bottom drive component, which place the workpiece in the placement hole of the planetary gear. Place the planetary gear between the sun gear and the internal gear ring to ensure that the planetary gear meshes with the sun gear and the internal gear ring; A pressure sensor and a controller are provided. The pressure sensor is installed between the upper and lower grinding parts to monitor the pressure applied to the workpiece in real time during the grinding process. The controller is used to receive the signal from the pressure sensor and control the pressure of the pressure bonding part according to the preset pressure threshold. The bottom drive unit is activated, causing the lower grinding disc to rotate relative to the upper grinding component and grind the workpiece.

[0025] By adopting the above technical solution, the workpiece is always subjected to uniform and appropriate pressure during the grinding process, realizing efficient double-sided uniform grinding, significantly improving the flatness and smoothness of the workpiece surface, while effectively avoiding workpiece damage caused by excessive or insufficient pressure, and improving grinding accuracy and process reliability.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a frame, upper grinding part, lower grinding part, lifting drive part and pressure bonding part, the workpiece is subjected to uniform double-sided grinding force during the grinding process, avoiding the unevenness of single-sided grinding. At the same time, the lifting drive part works in conjunction with the lifting drive part to achieve uniform pressure on the workpiece, avoiding the workpiece being subjected to sudden impact during the grinding process, which could cause local excessive pressure damage to brittle materials, thus improving the stability of the grinding process.

[0027] 2. The air pump and airbag are interconnected. The air pump can inflate or deflate the airbag, thereby flexibly adjusting the pressure. The airbag's buffering effect further reduces the impact caused by instantaneous pressure changes, making the grinding more stable and significantly improving the grinding quality. 3. By adding waste liquid cleaning components and vacuum generating components, waste liquid containing grinding chips can be effectively discharged, preventing waste liquid accumulation and grinding chips from causing friction and scratches on the workpiece surface, thereby extending the service life of the equipment and reducing the maintenance cost of the equipment. 4. By applying pressure sensors and controllers, the pressure applied to the workpiece during the grinding process is monitored and adjusted in real time to ensure that the workpiece is subjected to uniform and appropriate pressure, avoiding damage to the workpiece caused by excessive or insufficient pressure, and improving grinding accuracy. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application; Figure 2This is a cross-sectional view of the grinding part in Embodiment 1 of this application; Figure 3 This is a schematic diagram of the bottom drive component in Embodiment 1 of this application; Figure 4 This is a schematic diagram of the structure of the grinding part under this application; Figure 5 This is a cross-sectional view of the lower grinding part in Embodiment 1 of this application; Figure 6 yes Figure 5 Enlarged diagram of point A.

[0029] In the diagram: 1. Frame; 11. Internal gear ring; 2. Upper grinding component; 21. Upper grinding support; 22. Upper grinding disc; 3. Lower grinding component; 31. Lower grinding disc; 32. Planetary gear; 321. Placement hole; 33. Sun gear; 34. Bottom drive component; 4. Lifting drive component; 41. Servo motor; 42. Reducer; 43. Lead screw; 5. Pressure bonding component; 51. Air pump; 52. Airbag; 6. Waste liquid cleaning component; 61. Arc-shaped boss; 62. Elastic component; 63. Collection hole; 64. Collection tank; 65. Vacuum generator; 66. Drain pipe; 67. Shut-off valve. Detailed Implementation

[0030] It should be noted that, in the description of this invention, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail below.

[0032] First aspect Example 1, referring to Figure 1 A double-sided pressure grinding machine includes a frame 1, an upper grinding part 2, a lower grinding part 3, a lifting drive part 4, a pressure bonding part 5, and a waste liquid cleaning part 6.

[0033] Reference Figure 1 and Figure 2The frame 1 includes a bottom chassis and a lifting mounting platform on the chassis, with a grinding groove provided on the chassis. An upper grinding component 2 is mounted on top of the frame 1, and has a grinding end positioned opposite the grinding groove. The upper grinding component 2 includes an upper grinding bracket 21 and an upper grinding disc 22. The upper grinding bracket 21 is fixedly connected to a lifting drive component 4, which drives the upper grinding bracket 21 closer to or further away from the lower grinding component 3. The upper grinding bracket 21 has a sliding groove, and the upper grinding disc 22 is disposed within the sliding groove and slidably connected to the upper grinding bracket 21 along its thickness direction.

[0034] Reference Figure 2 and Figure 3 The upper grinding bracket 21 includes an L-shaped connecting block at the top. A lifting drive component 4 is fixed to the chassis and is used to drive the grinding end closer to or further away from the lower grinding workpiece 3. The lifting drive component 4 includes a servo motor 41, a reducer 42, and a lead screw 43. A threaded hole is provided on the L-shaped connecting block. The servo motor 41 is mounted on the frame 1 and is fixedly connected to the frame 1. The reducer 42 is connected to the servo motor 41 for transmission, and is used to reduce speed and transmit power. The lead screw 43 is connected to the output shaft of the reducer 42, and the lead screw 43 is threadedly engaged with the threaded hole. When the servo motor 41 starts to rotate, it drives the reducer 42 to rotate at a reduced speed. The function of the reducer 42 is to convert the high-speed, low-torque rotation of the servo motor 41 into a low-speed, high-torque rotation. This ensures that the lead screw 43 has sufficient torque during rotation to drive the lifting and lowering of the upper grinding bracket 21, while the reduction effect of the reducer 42 makes the movement smoother and more controllable. The output shaft of the reducer 42 is connected to the lead screw 43, which is threaded into the threaded hole on the upper grinding bracket 21. When the servo motor 41 drives the lead screw 43 to rotate through the reducer 42, the lead screw 43 rotates in the threaded hole. Due to the pitch of the thread, the rotational motion of the lead screw 43 is converted into the linear lifting motion of the upper grinding bracket 21.

[0035] Reference Figure 2The pressure-adhesive component 5 is mounted on the upper grinding component 2, and the upper grinding component 2 has a mounting groove. The pressure-adhesive component 5 includes an air pump 51 and an air bladder 52. The air pump 51 is fixedly connected to the upper grinding support 21. The air bladder 52 is located between the upper grinding disc 22 and the upper grinding support 21, and is set in the mounting groove. The air pump 51 and the air bladder 52 are interconnected, and the air pump 51 is used to inflate or deflate the air bladder 52. When the lifting drive component 4 drives the upper grinding component 2 closer to the lower grinding component 3, the pressure-adhesive component 5 can apply uniform pressure to the workpiece. The air pump 51 can inflate or deflate the air bladder 52, thereby flexibly adjusting the pressure intensity. This not only ensures that the workpiece is subjected to uniform pressure during the grinding process, but also avoids damage to the workpiece caused by excessive local pressure. In addition, the buffering effect of the air bladder 52 further reduces the impact force caused by instantaneous pressure changes, making the grinding more stable and significantly improving the grinding quality and grinding safety.

[0036] Reference Figure 4 and Figure 5 The lower grinding component 3 is disposed within the grinding tank, corresponding vertically to the upper grinding component 2. The upper grinding component 2 is used to grind the workpiece. An internal gear ring 11 is disposed on the inner wall of the grinding tank, and the internal gear ring 11 is fixedly connected to the lower grinding disc 31. The lower grinding component 3 includes a lower grinding disc 31, a planetary gear 32, a sun gear 33, and a bottom drive component 34. The lower grinding disc 31 is disposed within the grinding tank, and the planetary gear 32 is disposed on the lower grinding disc 31. The planetary gear 32 has multiple placement holes 321 for accommodating the workpiece to be ground. The thickness of the planetary gear 32 is less than the thickness of the workpiece to be ground. The sun gear 33 is fixedly disposed at the center of the grinding tank and meshes with the planetary gear 32. The bottom drive component 34 is used to drive the sun gear 33 and the lower grinding disc 31 to rotate synchronously in a circumferential direction. The planetary gear 32 meshes with the internal gear ring 11. The bottom drive component 34 is disposed within the housing. In this embodiment, a motor is used, and the output shaft of the motor is fixedly connected to the sun gear 33.

[0037] The workpiece to be ground is placed in the placement slot, allowing the lower grinding part 3 to mate with the upper grinding part 2 for grinding. The corresponding upper and lower grinding structures ensure that the workpiece receives uniform double-sided grinding force simultaneously during the grinding process, avoiding the unevenness of single-sided grinding and significantly improving grinding efficiency and workpiece surface flatness. The lifting drive 4, through its smooth movement, prevents sudden impacts on the workpiece during grinding, preventing damage to brittle materials and improving the stability of the grinding process.

[0038] When the bottom drive unit 34 is activated, the lower grinding disc 31 and the sun gear 33 rotate. The rotation of the sun gear 33 drives the planetary gear 32 meshing with it to rotate, and the rotation direction of the lower grinding disc 31 is opposite to that of the upper grinding disc 22. The rotation of the lower grinding disc 31 drives the planetary gear 32 to rotate on its own axis and revolve around the internal gear ring 11. The multi-directional relative motion of the planetary gear 32 enables the workpiece to be uniformly subjected to multi-directional grinding forces during the grinding process, resulting in comprehensive and uniform grinding, thereby improving the flatness of the workpiece surface.

[0039] Reference Figure 5 and Figure 6 The lower grinding disc 31 has mounting holes along its thickness direction. A waste liquid cleaning component 6 is installed within these holes to quickly drain the grinding fluid containing grinding chips located between the lower grinding disc 31 and the upper grinding disc 22. After a period of operation, continued use of grinding fluid containing grinding chips can cause friction and scratches on the workpiece surface, potentially affecting the grinding accuracy. The waste liquid cleaning component 6 facilitates the rapid drainage of accumulated grinding fluid, reducing equipment wear, extending equipment lifespan, and lowering maintenance costs.

[0040] The waste liquid cleaning component 6 includes an arc-shaped boss 61, an elastic element 62, a vacuum generator 65, and a shut-off valve 67. The arc-shaped boss 61 is slidably connected within the mounting hole, protruding towards the side near the upper grinding disc 22. One end of the elastic element 62 is fixedly connected to the bottom wall of the mounting hole, and the other end is fixedly connected to the arc-shaped boss 61. In this embodiment, the elastic element 62 includes a spring and a guide rod. The guide rod is fixedly connected to the arc-shaped boss 61, and the spring is fixedly connected to the arc-shaped boss 61. A slot is provided at the bottom of the guide rod, and the guide rod slides into the slot. In addition, a collection hole 63 is provided near the mounting hole on the lower grinding disc 31. The collection hole 63 is inclined. When the planetary gear 32 passes through the arc-shaped boss 61, the collection hole 63 communicates with the mounting hole; when the planetary gear 32 does not pass through the arc-shaped boss 61, the collection hole 63 is blocked by the arc-shaped boss 61. When the upper grinding disc 31 and the lower grinding disc 22 are performing grinding operations, the grinding fluid is used to lubricate and cool the workpiece. However, after a period of use, the grinding fluid will contain a large amount of grinding debris. The planetary gear 32 moves in a circular trajectory around the internal gear ring 11 during the grinding process. When the planetary gear 32 passes the arc-shaped boss 61, the elastic element 62 causes the arc-shaped boss 61 to be pressed down, opening the channel with the collection hole 63. Waste fluid containing grinding debris enters the mounting hole through the collection hole 63 and is quickly discharged. When the planetary gear 32 leaves the arc-shaped boss 61, the elastic element 62 resets the arc-shaped boss 61, the collection hole 63 is blocked, and the channel is closed, preventing excessive grinding fluid from being discharged. With this design, the waste fluid cleaning component 6 can effectively and promptly discharge waste fluid containing grinding debris during the grinding process, preventing the grinding debris from causing friction and scratches on the workpiece surface, thereby improving the grinding accuracy of the workpiece.

[0041] Reference Figure 6The lower grinding disc 31 is also provided with a collection tank 64, which is connected to the collection hole 63. The waste liquid cleaning component also includes a vacuum generator 65, which is installed on the lower grinding disc 31 and is connected to the collection tank 64. The vacuum generator 65 is used to generate negative pressure in the collection tank 64. In this embodiment, the vacuum generator 65 is a vacuum generator, which can continuously suck away the air in the collection tank 64, reducing the pressure in the collection tank 64, the collection hole 63, and the mounting hole to below atmospheric pressure, forming a certain degree of vacuum. During the grinding process, the waste liquid containing grinding chips generated enters the collection tank 64 through the collection hole 63. Under the action of negative pressure, the waste liquid is quickly sucked out and discharged from the equipment, effectively preventing the accumulation of waste liquid.

[0042] The waste liquid cleaning component 6 includes a drain pipe 66, which is embedded in the lower grinding disc 31. One end of the drain pipe 66 is connected to the collection tank 64, and the other end is connected to the outside. A shut-off valve 67 is installed on the drain pipe 66. The collection tank 64 and the shut-off valve 67 allow the waste liquid containing grinding chips to have a settling area before entering the discharge area. When the collection tank 64 and the collection hole 63 are filled with grinding fluid, the grinding chips gradually settle down in the collection tank 64 due to gravity, preventing the grinding fluid containing grinding chips from interfering with the grinding accuracy. When the grinding fluid in the collection tank 64 contains a large amount of waste liquid, i.e., when waste liquid needs to be discharged, the shut-off valve 67 can be opened; when discharge is not required, the shut-off valve 67 can be closed, utilizing the settling function of the collection tank 64 to reduce the interference of grinding chips. In this embodiment, a waste liquid recycling and reuse system (not shown in the figure) is also provided inside the chassis, including a filter connected to the shut-off valve 67, for filtering the collected grinding fluid containing grinding chips for recycling. Example 2 is largely the same as Example 1, except that a pressure sensor and controller (not shown in the figure) are added.

[0043] A pressure sensor is installed between the upper grinding piece 2 and the lower grinding piece 3 to monitor the pressure applied to the workpiece in real time during the grinding process. The pressure sensor is electrically connected to the controller, which is in turn electrically connected to the air pump 51. The sensor accurately measures the pressure changes applied to the workpiece surface by the upper grinding piece 2 and transmits the data to the controller. The controller receives the signal from the pressure sensor and dynamically adjusts the operating state of the air pump 51 based on a preset pressure threshold and real-time pressure data. This adjusts the inflation or deflation of the air bladder 52 to ensure that the pressure applied to the workpiece remains within the set range. When the pressure sensor detects excessive pressure on the workpiece, the controller instructs the air pump 51 to deflate the air bladder 52, reducing the applied pressure and preventing damage to the workpiece due to overpressure. When the pressure sensor detects insufficient pressure on the workpiece, the controller instructs the air pump 51 to inflate the air bladder 52, increasing the applied pressure and ensuring uniform force on the workpiece surface, thus avoiding insufficient pressure affecting the grinding effect.

[0044] In other embodiments, a numerical control (CNC) system is also incorporated. This CNC system can precisely control the motion trajectory and processing parameters, ensuring processing accuracy and consistency. Combined with pressure and temperature sensors, it can monitor key parameters such as force and temperature in real time during the grinding process, providing operators with real-time feedback and adjustment guidelines, thereby ensuring the stability and safety of the processing.

[0045] Second aspect This application provides a double-sided pressure equalization grinding method, which utilizes the aforementioned double-sided pressure equalization grinding machine and includes the following steps: A lower grinding disc 31 is provided, a planetary gear 32 with a placement hole 321, a sun gear 33 and a bottom drive member 34 are provided, and the workpiece is placed on the placement hole 321 of the planetary gear 32. The planetary gear 32 is placed between the sun gear and the internal gear ring 11 to ensure that the planetary gear 32 meshes with the sun gear and the internal gear ring 11; A pressure sensor and a controller are provided. The pressure sensor is installed between the upper grinding part 2 and the lower grinding part 3 to monitor the pressure applied to the workpiece in real time during the grinding process. The controller is used to receive the signal from the pressure sensor and control the pressure of the pressure bonding part 5 according to the preset pressure threshold. Start the bottom drive component 34 to drive the lower grinding disc 31 to rotate relative to the upper grinding component 2 and grind the workpiece.

[0046] The workpiece is subjected to uniform and appropriate pressure throughout the grinding process, achieving efficient double-sided uniform grinding, significantly improving the flatness and smoothness of the workpiece surface, while effectively avoiding workpiece damage caused by excessive or insufficient pressure, thus improving grinding accuracy and process reliability.

[0047] It should be noted that the air pump 51, vacuum generator, pressure sensor and controller in this embodiment are all commercially available devices. The model can be selected or customized according to actual needs. In this application, we only use them and have not improved their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method can be debugged and operated in accordance with the requirements of their instruction manual, and will not be described in detail here.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-sided pressure-equalizing grinding machine, characterized in that, include: A frame (1) is provided with a grinding groove, and an internal gear ring (11) is provided on the inner wall of the grinding groove of the frame (1). The upper grinding part (2) is mounted on the frame (1). The upper grinding part (2) has a grinding end, and the grinding end of the upper grinding part (2) is arranged opposite to the grinding groove of the frame (1). The lower grinding part (3) is set in the grinding groove of the frame (1) and is set vertically and vertically corresponding to the upper grinding part (2) to grind the workpiece in conjunction with the upper grinding part (2); The lifting drive (4) is fixedly connected to the upper grinding part (2) and is used to drive the grinding end of the upper grinding part (2) to approach or move away from the lower grinding part (3). The pressure bonding component (5) is disposed on the upper grinding component (2). When the lifting drive component (4) drives the upper grinding component (2) to approach the lower grinding component (3), the pressure bonding component (5) can apply uniform pressure to the workpiece. The upper grinding component (2) includes: The upper grinding bracket (21) is fixedly connected to the lifting drive (4), and the lifting drive (4) is used to drive the upper grinding bracket (21) to move closer to or away from the lower grinding component (3). The upper grinding disc (22) is disposed in the groove of the upper grinding support (21) and is slidably connected to the upper grinding support (21) along the thickness direction of the upper grinding support (21); The upper grinding bracket (21) has an installation groove, and the pressure bonding component (5) includes: An air pump (51) is fixedly connected to the upper grinding bracket (21); An airbag (52) is located between the upper grinding disc (22) and the upper grinding bracket (21). The airbag (52) is installed in the mounting groove of the upper grinding bracket (21). The air pump (51) is connected to the airbag (52). The air pump (51) is used to inflate or deflate the airbag (52). The airbag (52) has a buffering effect to reduce the impact force caused by instantaneous pressure changes. When the lifting drive (4) drives the upper grinding part (2) to approach the lower grinding part (3), the pressure bonding part (5) can apply uniform pressure to the workpiece. The lower grinding component (3) further includes: The lower grinding disc (31) is disposed in the grinding groove of the frame (1); Multiple planetary gears (32) are disposed on the lower grinding disc (31). Multiple placement holes (321) are provided on the planetary gears (32). The placement holes (321) of the planetary gears (32) are used to accommodate the workpiece to be ground. The thickness of the planetary gears (32) is less than the thickness of the workpiece to be ground. The sun gear (33) is located at the center of the grinding groove of the frame (1) and meshes with the planetary gear (32); The bottom drive (34) is used to drive the sun gear (33) to rotate circumferentially, and the planetary gear (32) meshes with the internal gear ring (11); The double-sided pressure equalization grinding machine also includes a pressure sensor and a controller. The pressure sensor is installed between the upper grinding part (2) and the lower grinding part (3) to monitor the pressure applied to the workpiece in real time during the grinding process. The controller is used to receive the signal from the pressure sensor and control the pressure of the pressure bonding part (5) according to the preset pressure threshold. The lower grinding disc (31) has mounting holes along its thickness direction. Waste liquid cleaning component (6) is installed in the mounting hole of the lower grinding disc (31) for quickly discharging the grinding fluid containing grinding chips located between the lower grinding disc (31) and the upper grinding disc (22); The waste liquid cleaning component (6) includes: An arc-shaped boss (61) is slidably connected in the mounting hole of the lower grinding disc (31), and the arc-shaped boss (61) protrudes towards the side close to the upper grinding disc (22); The elastic element (62) is fixedly connected at one end to the bottom wall of the mounting hole of the lower grinding disc (31), and at the other end to the arc-shaped boss (61). The lower grinding disc (31) is provided with a collection hole (63). The collection hole (63) is inclined. When the planetary gear (32) passes through the arc-shaped boss (61), the collection hole (63) is connected to the mounting hole of the lower grinding disc (31). When the planetary gear (32) does not pass through the arc-shaped boss (61), the collection hole (63) is blocked by the arc-shaped boss (61).

2. The double-sided equal-pressure grinding machine according to claim 1, characterized in that, The lower grinding disc (31) is also provided with a collection groove (64) which is connected to the collection hole (63); the waste liquid cleaning component (6) also includes a vacuum generator (65) which is disposed on the lower grinding disc (31); the vacuum generator (65) is connected to the collection groove (64) and the vacuum generator (65) is used to generate negative pressure in the collection groove (64).

3. The double-sided pressure-equalizing grinding machine according to claim 2, characterized in that, The waste liquid cleaning component (6) also includes a drain pipe (66), which is embedded in the lower grinding disc (31); one end of the drain pipe (66) is connected to the collection tank (64), and the other end is connected to the outside; a shut-off valve (67) is provided on the drain pipe (66).

4. The double-sided pressure-equalizing grinding machine according to claim 1, characterized in that, The upper grinding bracket (21) has a threaded hole, and the lifting drive component (4) includes: A servo motor (41) is located on the frame (1) and is fixedly connected to the frame (1); The reducer (42) is connected to the servo motor (41) for driving and transmitting power; The lead screw (43) is connected to the output shaft of the reducer (42), and the lead screw (43) is threadedly engaged with the threaded hole of the upper grinding bracket (21).

5. A double-sided pressure-equalizing grinding method, utilizing a double-sided pressure-equalizing grinding machine as described in any one of claims 1-4, characterized in that, Includes the following steps: A lower grinding disc (31) is provided, a planetary gear (32) with a placement hole (321), a sun gear (33) and a bottom drive (34) are provided, and a workpiece is placed on the placement hole (321) of the planetary gear (32); Place the planetary gear (32) between the sun gear (33) and the internal gear ring (11) to ensure that the planetary gear (32) meshes with the sun gear (33) and the internal gear ring (11); A pressure sensor and a controller are provided. The pressure sensor is installed between the upper grinding part (2) and the lower grinding part (3) to monitor the pressure applied to the workpiece in real time during the grinding process. The controller is used to receive the signal from the pressure sensor and control the pressure of the pressure bonding part (5) according to the preset pressure threshold. The bottom drive unit (34) is activated, which drives the lower grinding disc (31) to rotate relative to the upper grinding unit (2) and grind the workpiece.

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