A dynamic pressure compensation grinding device and grinding method thereof

Abstract

The present invention discloses a grinding device for dynamic pressure compensation and a grinding method thereof, which have strong compatibility and are not only suitable for grinding regular sheet products, but also for grinding non-sheet products; the dynamic compensator is assembled with the workpiece in the form of a tooling, and after the workpiece and the tooling are assembled, the whole is installed under the dynamic compensator shell, and the outer diameter of the blind hole under the dynamic compensator shell is a specific value. When designing the tooling, the upper half of the tooling remains unchanged and needs to be installed in the blind hole, and the lower half is designed with different structures according to different products. This structural design is compatible with multiple varieties of products; at the same time, the lower part of the dynamic compensator shell is designed as a quick-installation mechanism, which can realize rapid replacement of workpieces, and has stable quality, high efficiency, convenience and speed.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding, and in particular relates to a grinding device with dynamic pressure compensation and a grinding method thereof. Background Art

[0002] Grinding is an important processing method in ultra-precision machining, with the advantages of high machining accuracy and a wide range of processing materials. However, traditional grinding methods have many disadvantages, such as many restrictions on product structure and size, low work efficiency, and high processing costs. This greatly limits traditional grinding technology, especially when it comes to grinding non-sheet products, compatibility with different types, and automatic replacement of workpieces. Traditional grinders are even more unable to meet grinding needs. There are many types of non-sheet products on the market. For such products, most of them are repeatedly ground manually. The workpiece is manually held on the grinding disc and ground for a period of time. After grinding, the workpiece is inspected and the unqualified areas are marked for re-grinding. During re-grinding, a corresponding force is applied to the unqualified areas to ensure plane accuracy. This is time-consuming, labor-intensive, and cannot meet the needs of rapid testing. The existing equipment is only an auxiliary rotating mechanism, and does not achieve true automatic replacement of workpieces and automatic grinding.

[0003] To ensure high precision when grinding non-sheet products, the primary technical challenge is maintaining relatively stable pressure between the end face of the product being ground and the contact surface of the grinding disc. Pressure deviations must not exceed specified limits when the workpiece is rotated to the same position during grinding. This requires that the pressure applied to the workpiece by the equipment must remain constant within a certain range as the workpiece rotates. While there are no mature technologies on the market to achieve this, more common solutions involve minimizing the perpendicularity between the rotating shaft and the end face of the grinding disc. However, this approach only achieves low-precision grinding, as the assembly of mechanical components can introduce errors. Furthermore, due to the lever-amplifying principle of the rotating shaft, pressure deviations on the product cannot be guaranteed. This principle is not suitable for high-precision grinding. Achieving high-precision grinding requires fundamentally addressing the issue of unstable pressure and dynamically compensating for uneven pressure caused by assembly errors of the grinding shaft. Therefore, there is an urgent need to develop a grinding device and grinding method that dynamically compensates for pressure to address these technical issues. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art and provide a grinding device and a grinding method for dynamic pressure compensation to solve the problem of unstable pressure and dynamically compensate for the uneven pressure caused by the assembly error of the grinding shaft.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A grinding device with dynamic pressure compensation comprises a frame and a support platform fixed on the frame, wherein the support platform is provided with a dynamic compensation mechanism, a liquid supply mechanism and a grinding tool for grinding a workpiece;

[0007] The dynamic compensation mechanism includes a column fixed on the support platform, a lifting mechanism slidably arranged on the column, a servo drive device fixed on the top of the column, and a dynamic compensator for compensating pressure;

[0008] The dynamic compensator is located on a lifting plate fixed to the lifting mechanism, and its upper end is slidably engaged with the drive shaft of the servo drive device, and the lower end of the dynamic compensator is also provided with a clamping portion for clamping the tooling, and the clamping portion is movable through the lifting plate and is located below it;

[0009] The clamping part clamps the tooling and is in clearance fit with the workpiece and applies a vertical grinding force to the workpiece under the action of the dynamic compensator;

[0010] During operation, the workpiece and the tooling are detachably connected, the grinding tool is fixedly arranged under the clamping part, and the liquid supply mechanism supplies liquid to the grinding tool for grinding, while the dynamic compensation mechanism applies vertical pressure to the workpiece for grinding.

[0011] The dynamic compensator includes a dynamic compensator housing and a power flange, and the dynamic compensator housing is located below the support platform and is fixed to a drive flange cover plate located above the support platform, and the drive flange cover plate is used to limit the downward position of the dynamic compensator;

[0012] The top end of the power flange passes through the support platform and is slidably fitted with the drive shaft of the servo drive device, while the lower end thereof is elastically and softly connected to the dynamic compensator housing through a vertically arranged spring.

[0013] The clamping portion is configured as a cylindrical structure and is fixedly mounted on the bottom of the dynamic compensator housing. A vertically opened stepped hole is provided at the core of the cylindrical structure, and sliding guide posts are provided on both side walls thereof. The ends of the sliding guide posts are provided with inclined sections that expand from bottom to top.

[0014] The two side surfaces of the tooling are correspondingly provided with clamping grooves for clamping and limiting the ends of the sliding guide pillars, and the workpiece is arranged at the bottom of the tooling and is clearance-matched with the stepped hole.

[0015] A return spring is further provided between the sliding guide post and the two side walls, and the return spring is sleeved on the sliding guide post and correspondingly limited in the two side walls of the cylindrical structure.

[0016] The utility model also includes a separation structure, and the separation structure includes a separation cylinder and a separation claw provided at the end of the separation cylinder, and the separation cylinder drives the separation claw to move and grab the sliding guide column to separate it from the tooling;

[0017] When the separation claw releases the sliding guide post, the sliding guide post is reset under the action of the reset spring.

[0018] The support platform is also provided with a rotating turntable mechanism, a workpiece moving mechanism, and a feeding mechanism and a discharging mechanism for placing the workpiece, and the feeding mechanism and the discharging mechanism are arranged at intervals, and the rotating turntable mechanism is rotatably arranged on the support platform, and the grinding tool is fixed on the rotating turntable mechanism and rotates synchronously with it;

[0019] The workpiece moving mechanism includes a manipulator fixed on the support platform and a pneumatic clamping claw arranged at the front end of the manipulator. The pneumatic clamping claw moves under the drive of the manipulator and grabs or releases the workpiece to the corresponding workstation.

[0020] The power flange of the dynamic compensator is also provided with a counterweight block, and the counterweight block and the power flange are interference fit.

[0021] The liquid supply mechanism includes an X linear module, a Y linear module and a liquid pushing mechanism. The X linear module is fixed on the support platform, the Y linear module is fixed on the X linear module, and the liquid pushing mechanism is fixed on the Y linear module and moves forward, backward, left and right under the drive of the corresponding linear module and controls the nozzle at the front end to supply liquid to the grinding tool.

[0022] The top end of the clamping portion is further provided with a downwardly arranged inclined surface structure. When the lifting plate moves downward to the inclined surface structure, the lifting plate is separated from the clamping portion.

[0023] A grinding method for a grinding device with dynamic pressure compensation comprises the following steps:

[0024] (1) Assemble the workpiece and tooling and place them on the support platform;

[0025] (2) Set the grinding times and click the start button;

[0026] (3) The manipulator cooperates with the pneumatic gripper to grab the tooling and place it on the mold;

[0027] (4) The lifting plate drives the dynamic compensator to fall, the upper part of the tooling is inserted into the stepped hole of the clamping part and pushes the sliding guide pin until it is installed in the card slot of the tooling, and then the tooling moves synchronously with the dynamic compensator;

[0028] (5) The liquid supply mechanism is started, and the nozzle moves to the upper end of the abrasive tool to spray a circle of grinding liquid, and then returns to its original position after completion;

[0029] (6) The lifting plate drives the dynamic compensator to descend, so that the end face of the workpiece is close to the upper end face of the grinding tool, and then the lifting plate continues to descend and separates from the clamping part of the dynamic compensator;

[0030] (7) The servo drive device starts to rotate, driving the dynamic compensator to rotate, and the dynamic compensator drives the tooling and workpiece to rotate synchronously, grinding the workpiece on the grinding tool;

[0031] (8) After grinding is completed, the lifting plate rises and drives the dynamic compensator and workpiece to rise;

[0032] (9) Repeat steps (5) to (8) until the set grinding times are completed;

[0033] (10) The separation mechanism works, and the separation cylinder drives the separation claw forward and grabs the sliding guide column to separate it from the tooling;

[0034] (11) The lifting plate drives the dynamic compensator to rise to the specified position, and the workpiece and tooling remain on the grinding tool;

[0035] (12) The rotating turntable mechanism drives the grinding tool to rotate and moves the ground workpiece to the designated workstation. The robot then cooperates with the pneumatic gripper to pick up and place it at the designated workstation.

[0036] (13) Repeat the above steps until all workpieces are ground.

[0037] The beneficial effects of the present invention are:

[0038] (1) The dynamic compensating pressure grinding equipment and grinding method disclosed in the present invention have strong compatibility and are not only suitable for grinding regular sheet products, but also suitable for grinding non-sheet products; the dynamic compensator is assembled with the workpiece in the form of a tooling. After the workpiece and the tooling are assembled, the whole is installed under the dynamic compensator shell. The outer diameter of the blind hole under the dynamic compensator shell is a specific value. When designing the tooling, the upper half of the tooling remains unchanged (needs to be installed in the blind hole), and the lower half is designed with different structures according to different products. This structural design is compatible with multiple varieties of products; at the same time, the lower part of the dynamic compensator shell is designed as a quick-install mechanism, which can realize rapid replacement of workpieces.

[0039] (2) Stable quality. When grinding in a dynamic compensation pressure environment, the workpiece is ground with high precision and stable quality. Tests have shown that the flatness of the workpiece is stable within 1 μm. When grinding manually, the workpiece is pressed manually, and the pressure is unstable, so the flatness quality of the ground product is unstable. The dynamic compensator in this invention can stabilize the pressure and ensure that the pressure is stable within a certain range during the grinding rotation, making the grinding quality high and stable.

[0040] (3) High efficiency. According to the test, manual grinding takes 8 minutes to grind one piece, while machine grinding takes 4 minutes to grind one piece. The efficiency of the machine is twice that of manual grinding. At the same time, during manual grinding, manual pressing will cause the turntable speed to be slow. During this period, applying the grinding fluid is even more time-consuming. The quality of manual grinding is unstable and needs to be repaired. The overall time is 8 minutes per piece. The machine grinding speed is fast, the precision is high and stable, and the efficiency is 4 minutes per piece.

[0041] (4) Convenient and fast. When operated manually, the grinding liquid needs to be sprayed manually and the pressure needs to be pressed during grinding, which is cumbersome, time-consuming and labor-intensive. When grinding with the grinding equipment of the present invention, after manually clicking the start button, the equipment automatically loads and unloads materials, sprays the grinding liquid and grinds, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is the overall assembly structure diagram of the present invention;

[0043] Figure 2 It is a partial perspective view of the overall assembly of the present invention;

[0044] Figure 3 It is the overall structural diagram of the support platform;

[0045] Figure 4 It is an overall three-dimensional diagram of the support platform;

[0046] Figure 5 It is the main view of the dynamic compensation mechanism;

[0047] Figure 6 It is a three-dimensional diagram of the dynamic compensation mechanism;

[0048] Figure 7 is a cross-sectional view of the dynamic compensation mechanism;

[0049] Figure 8 It is a three-dimensional diagram of the liquid supply mechanism. DETAILED DESCRIPTION

[0050] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0051] The present invention provides a grinding device and a grinding method for dynamically compensating pressure, such as Figures 1 to 8 shown.

[0052] The present invention provides a grinding equipment with dynamic pressure compensation, which includes a frame 1, a support platform 2, a rotating turntable mechanism 3, a feed tray pad 4, a feed tray 5, a workpiece moving mechanism 6, a discharge tray pad 7, a discharge tray 8, a workpiece and a tool 9, a liquid supply mechanism 10, and a dynamic compensation mechanism 11. An emergency stop switch 1-1, a stop button 1-2, a start button 1-3, and a touch screen 1-4 are fixed on the frame 1, a three-color light 1-5 is fixed on the top of the frame, a support platform 2 is fixed inside the frame, and a rotating turntable mechanism 3, a feed tray pad 4, a workpiece moving mechanism 6, a discharge tray pad 7, a liquid supply mechanism 10, and a dynamic compensation mechanism 11 are fixed on the support platform 2. The feed tray 5 is placed on the feed tray pad 4, and the discharge tray 8 is placed on the discharge tray pad 7. The workpiece and the tool 9 are assembled together and placed on the feed tray 5.

[0053] In this embodiment, the rotating turntable mechanism 3 includes a rotating turntable 3-1 and three grinding tools, specifically, three grinding tool fixing plates 3-3 and three grinding tools 3-2. The rotating turntable 3-1 is fixed on the supporting platform 2, and the three grinding tool fixing plates 3-3 are evenly fixed on the rotating turntable 3-1. The three grinding tools 3-2 are respectively fixed on the three grinding tool fixing plates 3-3.

[0054] Furthermore, the workpiece moving mechanism 6 includes a manipulator 6-1 and a pneumatic clamp 6-2. The manipulator 3-1 is fixed on the supporting platform 2, and the pneumatic clamp 6-2 is fixed at the front end of the manipulator 6-1.

[0055] The liquid supply mechanism 10 includes an X linear module 10-1, a Y linear module 10-2, a liquid pushing mechanism 10-3, an air pipe 10-4, a nozzle 10-5 and a nozzle fixing plate 10-6. The X linear module 10-1 is fixed on the support platform 2, the Y linear module 10-2 is fixed on the X linear module 10-1, the liquid pushing mechanism 10-3 is fixed on the Y linear module 10-2, the nozzle fixing plate 10-6 is fixed on the liquid pushing mechanism 10-3, the nozzle 10-5 is fixed on the nozzle fixing plate 10-6, and the air pipe 10-4 connects the grinding liquid container 10-3-3 and the nozzle 10-5.

[0056] The liquid pushing mechanism 10-3 includes a liquid pushing mechanism fixed plate 10-3-1, a servo electric cylinder 10-3-2, a grinding liquid container 10-3-3, and a grinding liquid container fixed plate 10-3-4. The liquid pushing mechanism fixed plate 10-3-1 is fixed on the Y linear module 10-2, the servo electric cylinder 10-3-2 is fixed inside the liquid pushing mechanism fixed plate 10-3-1, the grinding liquid container 10-3-3 is fixed inside the grinding liquid container fixed plate 10-3-4, and the grinding liquid container fixed plate 10-3-4 is fixed on the liquid pushing mechanism fixed plate 10-3-1.

[0057] The dynamic compensation mechanism 11 includes a column 11-1, a buffer device 11-2, a lifting mechanism 11-4, a separation mechanism 11-3, a servo motor fixing plate 11-5, a servo motor 11-6, a rigid coupling 11-7, a drive shaft 11-8, a long key 11-9, a dynamic compensator 11-10, and a counterweight block 11-11. The column 11-1 is fixed on the support platform 2, and the buffer mechanism 11-2, the lifting mechanism 11-4 and the servo motor fixing plate 11-5 are fixed on the column 11-1.

[0058] The buffer device 11-2 includes a buffer fixing plate 11-2-1 and a buffer 11-2-2. The buffer fixing plate 11-2-1 is fixed to the side of the column 11-1, and the buffer 11-2-2 is fixed on the buffer fixing plate 11-2-1.

[0059] The lifting mechanism 11-4 includes a lifting cylinder 11-4-1, a lifting cylinder fixing plate 11-4-2, a lifting plate fixing plate 11-4-3 and a lifting plate 11-4-4. The lifting cylinder 11-4-1 is fixed on the lifting cylinder fixing plate 11-4-2, the lifting cylinder fixing plate 11-4-2 is fixed on the column 11-1, the lifting plate fixing plate 11-4-3 is fixed on the top of the lifting cylinder 11-4-1, and the lifting plate 11-4-4 is fixed on the lifting plate fixing plate 11-4-3.

[0060] The separation mechanism 11-3 includes a separation mechanism fixing plate 11-3-1, a guide rail cylinder 11-3-2, a finger cylinder fixing plate 11-3-3, a finger cylinder 11-3-4 and a small claw 11-3-5. The separation mechanism fixing plate 11-3-1 is fixed to the side of the lifting plate 11-4-4, the guide rail cylinder 11-3-2 is fixed on the separation mechanism fixing plate 11-3-1, the finger cylinder fixing plate 11-3-3 is fixed to the top of the guide rail cylinder 11-3-2, the finger cylinder 11-3-4 is fixed on the finger cylinder fixing plate 11-3-3, and the small claw 11-3-5 is fixed on the two fingers of the finger cylinder 11-3-4.

[0061] The servo motor 11-6 is fixed on the servo motor fixing plate 11-5; the rigid coupling 11-7 connects the servo motor 11-6 and the drive shaft 11-8; a long key 11-9 is installed inside the drive shaft 11-8; and the dynamic compensator 11-10 is slidably fitted with the drive shaft 11-8 and is located on the lifting plate 11-4-4.

[0062] The dynamic compensator 11-10 includes a power flange 11-10-1, a drive flange cover 11-10-2, a dynamic compensator housing 11-10-3, a spring guide column 1 11-10-4, a customized spring 11-10-5, a spring guide column 2 11-10-6, a small spring 11-10-7, a small sheet metal 11-10-8, a sliding guide column 11-10-9 and an elastic pad 11-10-10. The shaft side of the power flange 11-10-1 is slidably matched with the drive shaft 11-8. The flange side of the power flange 11-10-1 is in the cavity of the dynamic compensator housing 11-10-3. Six spring guide columns 1 11-10-4 are evenly fixed on the flange side of the power flange 11-10-1. Six spring guide columns 2 are fixed in the cavity of the dynamic compensator housing 11-10-3. 11-10-6, the customized spring 11-10-5 is slidably matched with the spring guide column 1 11-10-4 and the spring guide column 2 11-10-6, the driving flange cover 11-10-2 is fixed on the upper end side of the dynamic compensator housing 11-10-3, the sliding guide column 11-10-9 is slidably matched with the lower stepped hole of the dynamic compensator housing 11-10-3, the small spring 11-10-7 is slidably matched with the outer side of the sliding guide column 11-10-9, the small sheet metal 11-10-8 is fixed on the dynamic compensator housing 11-10-3, and the elastic pad 11-10-10 is fixed on the bottom of the dynamic compensator housing 11-10-3.

[0063] All workpieces on the dynamic compensation mechanism 11 need to be processed according to the requirements of the precision level to ensure that their dimensional tolerance is within IT3 level and their form and position tolerance is within level 3.

[0064] The drive shaft 11-8 and the power flange 11-10-1 have an axial clearance fit to ensure that the dynamic compensator 11-10 presses the workpiece 9-1 against the upper end face of the mold 3-2 without interference; the power flange 11-10-1 and the counterweight 11-11 have an interference fit to ensure that the power flange 11-10-1 and the counterweight 11-11 rotate as a whole.

[0065] The power flange 11-10-1 and the dynamic compensator housing 11-10-3 are softly connected in the form of a customized spring 11-10-5. During grinding, the errors in assembly and equipment level are offset to ensure that the pressure on the workpiece 9-1 is within the set range.

[0066] The workpiece and the tooling 9 are assembled together, and the workpiece and the tooling 9 and the dynamic compensator housing 11-10-3 are clearance-matched to ensure that when the dynamic compensator 11 drives the workpiece 9-1 to rotate, the workpiece 9-1 is only subjected to the vertical pressure of the dynamic compensator housing 11-10-3, avoiding the influence of the lower inner hole of the dynamic compensator housing 11-10-3.

[0067] An elastic pad 11-10-10 is attached to the lower end surface of the dynamic compensator housing 11-10-3 to increase the friction between the workpiece 9-1 and the dynamic compensator housing 11-10-3 and ensure the stability of the workpiece rotation.

[0068] The grinding tool 3-2 is fixed on the rotating turntable 3-1 to ensure that the grinding tool remains stationary when the workpiece 9-1 rotates; the lifting plate 11-4-4 drives the dynamic compensator 11-10 to fall to the specified position, that is, the driving flange cover is used to limit the downward position of the dynamic compensator. At this time, the end face of the workpiece is close to the upper end face of the grinding tool 3-2, and then the lifting plate continues to descend, so that the lifting plate 11-4-4 is separated from the dynamic compensator 11-10, ensuring that the dynamic compensator is not affected by the lifting plate 11-4-4 when it rotates.

[0069] The design of the grinding equipment of the present invention ensures that the workpiece is only subjected to vertical pressure during grinding without external interference; and the dynamic compensator further stabilizes the grinding pressure, allowing the product to be ground faster and better.

[0070] The grinding method steps of the grinding machine equipment of the present invention are as follows:

[0071] In the first step, the workpiece 9-1 and the tooling 9-2 are assembled and placed in the feeding tray 5;

[0072] In the second step, the feeding tray 5 and the discharging tray 8 are placed on the feeding pad 4 and the discharging pad 7 respectively;

[0073] Step 3: Set the grinding times and click the start button;

[0074] In the fourth step, the manipulator 6-1 cooperates with the pneumatic gripper 6-2 to grab the workpiece and the tooling 9 and place them on the mold 3-2 at station 1;

[0075] Step 5: The rotating turntable 3-1 drives the mold 3-2 to rotate 120°, so that the mold 3-2 with the workpiece and the tooling 9 moves to the No. 2 station. At the same time, the robot 6-1 cooperates with the pneumatic gripper 6-2 to grab the workpiece and the tooling 9 and place them on the mold 3-2 at the No. 1 station.

[0076] Step 6: The lifting plate 11-4-4 drives the dynamic compensator 11-10 to fall to the specified position, so that the upper part of the tooling 9-2 is clamped on the sliding guide column 11-10-9 at the lower part of the dynamic compensator 11-10. At this time, the workpiece and the tooling 9 can move together with the dynamic compensator 11-10.

[0077] Step 7: The lifting plate 11-4-4 drives the dynamic compensator 11-10 to rise to the upper limit position;

[0078] In the eighth step, the liquid supply mechanism 10 works, and the nozzle 10-5 moves to the upper end of the grinding tool 3-2 at position 2 to spray a circle of grinding liquid, and then returns to its original position after completion;

[0079] In the ninth step, the lifting plate 11-4-4 drives the dynamic compensator 11-10 to descend to the lower limit position;

[0080] In the tenth step, the servo motor 11-6 rotates, driving the dynamic compensator 11-10 to rotate, and the dynamic compensator 11-10 drives the workpiece and the tooling 9 to rotate;

[0081] Step 11: After the grinding is completed, the lifting plate 11-4-4 drives the dynamic compensator 11-10 to rise to the upper limit position;

[0082] Step 12: Repeat steps 8 to 11 according to the set grinding times;

[0083] Step 13: After the grinding is completed, the separation mechanism 11-3 works, the guide cylinder 11-3-2 drives the finger cylinder 11-3-3 to move forward to the specified position, and the finger cylinder 11-3-3 drives the small claw 11-3-5 to expand outward, so that the sliding guide column 11-10-9 is separated from the tooling 9-2;

[0084] In the fourteenth step, the lifting plate 11-4-4 drives the dynamic compensator 11-10 to rise to the upper limit position, and the workpiece and the tooling 9 remain on the mold;

[0085] In the fifteenth step, the rotating turntable 3-1 drives the grinding tool to rotate 120 degrees. The ground workpiece and tooling 9 are moved to station 3. The manipulator 6-1 cooperates with the pneumatic gripper 6-2 to unload the workpiece and place it in the specified position of the discharge tray 8. The manipulator 6-1 cooperates with the pneumatic gripper 6-2 to grab the workpiece and tooling 9 and place them on the mold 3-2 at station 1. The mold 3-2 with the workpiece and tooling 9 at station 1 is rotated to station 2.

[0086] Step 16: Repeat the above steps until the workpiece is completely ground.

[0087] If the terms "first" and "second" are used in this patent to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description, and the above terms have no special meaning.

[0088] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications are possible without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the claimed invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0089] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "center", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the protection content of the present invention.

Claims

1. A grinding device with dynamic pressure compensation, characterized in that: It includes a frame and a support platform fixed on the frame, and the support platform is provided with a dynamic compensation mechanism, a liquid supply mechanism and a grinding tool for grinding a workpiece; The dynamic compensation mechanism includes a column fixed on the support platform, a lifting mechanism slidably arranged on the column, a servo drive device fixed on the top of the column, and a dynamic compensator for compensating pressure; The dynamic compensator is located on a lifting plate fixed to the lifting mechanism, and its upper end is slidably engaged with the drive shaft of the servo drive device, and the lower end of the dynamic compensator is also provided with a clamping portion for clamping the tooling, and the clamping portion is movable through the lifting plate and is located below it; The clamping part clamps the tooling and is in clearance fit with the workpiece and applies a vertical grinding force to the workpiece under the action of the dynamic compensator; During operation, the workpiece and the fixture are detachably connected, the grinding tool is fixedly mounted under the clamping portion, and the liquid supply mechanism supplies liquid to the grinding tool for grinding, while the dynamic compensation mechanism applies vertical pressure to the workpiece for grinding; The dynamic compensator includes a dynamic compensator housing and a power flange, and the dynamic compensator housing is located below the support platform and is fixed to a drive flange cover plate located above the support platform, and the drive flange cover plate is used to limit the downward position of the dynamic compensator; The top end of the power flange passes through the support platform and is slidably fitted with the drive shaft of the servo drive device, while the lower end thereof is elastically and softly connected to the dynamic compensator housing through a vertically arranged spring.

2. The dynamic pressure compensation grinding device according to claim 1, characterized in that: The clamping portion is configured as a cylindrical structure and is fixedly mounted on the bottom of the dynamic compensator housing. A vertically opened stepped hole is provided at the core of the cylindrical structure, and sliding guide posts are provided on both side walls thereof. The ends of the sliding guide posts are provided with inclined sections that expand from bottom to top. The two side surfaces of the tooling are correspondingly provided with clamping grooves for clamping and limiting the ends of the sliding guide pillars, and the workpiece is arranged at the bottom of the tooling and is clearance-matched with the stepped hole.

3. The dynamic pressure compensation grinding device according to claim 2, characterized in that: A return spring is further provided between the sliding guide post and the two side walls, and the return spring is sleeved on the sliding guide post and correspondingly limited in the two side walls of the cylindrical structure.

4. The dynamic pressure compensation grinding device according to claim 3, characterized in that: The utility model also includes a separation structure, and the separation structure includes a separation cylinder and a separation claw provided at the end of the separation cylinder, and the separation cylinder drives the separation claw to move and grab the sliding guide column to separate it from the tooling; When the separation claw releases the sliding guide post, the sliding guide post is reset under the action of the reset spring.

5. The dynamic pressure compensation grinding device according to claim 2, characterized in that: The support platform is also provided with a rotating turntable mechanism, a workpiece moving mechanism, and a feeding mechanism and a discharging mechanism for placing the workpiece, and the feeding mechanism and the discharging mechanism are arranged at intervals, and the rotating turntable mechanism is rotatably arranged on the support platform, and the grinding tool is fixed on the rotating turntable mechanism and rotates synchronously with it; The workpiece moving mechanism includes a manipulator fixed on the support platform and a pneumatic clamping claw arranged at the front end of the manipulator. The pneumatic clamping claw moves under the drive of the manipulator and grabs or releases the workpiece to the corresponding workstation.

6. The grinding device with dynamic pressure compensation according to claim 1, characterized in that: The power flange of the dynamic compensator is also provided with a counterweight block, and the counterweight block and the power flange are interference fit.

7. The dynamic pressure compensation grinding device according to claim 1, characterized in that: The liquid supply mechanism includes an X linear module, a Y linear module and a liquid pushing mechanism. The X linear module is fixed on the support platform, the Y linear module is fixed on the X linear module, and the liquid pushing mechanism is fixed on the Y linear module and moves forward, backward, left and right under the drive of the corresponding linear module and controls the nozzle at the front end to supply liquid to the grinding tool.

8. The dynamic pressure compensation grinding device according to claim 1, characterized in that: The top end of the clamping portion is further provided with a downwardly arranged inclined surface structure. When the lifting plate moves downward to the inclined surface structure, the lifting plate is separated from the clamping portion.

9. A grinding method based on a grinding device with dynamic pressure compensation according to any one of claims 5 to 8, characterized in that: The following steps are involved: (1) Assemble the workpiece and tooling and place them on the support platform; (2) Set the grinding times and click the start button; (3) The manipulator cooperates with the pneumatic gripper to grab the tooling and place it on the mold; (4) The lifting plate drives the dynamic compensator to fall, the upper part of the tooling is inserted into the stepped hole of the clamping part and pushes the sliding guide pin until it is installed in the card slot of the tooling, and then the tooling moves synchronously with the dynamic compensator; (5) The liquid supply mechanism is started, and the nozzle moves to the upper end of the abrasive tool to spray a circle of grinding liquid, and then returns to its original position after completion; (6) The lifting plate drives the dynamic compensator to descend, so that the end face of the workpiece is close to the upper end face of the grinding tool, and then the lifting plate continues to descend and separates from the clamping part of the dynamic compensator; (7) The servo drive device starts to rotate, driving the dynamic compensator to rotate, and the dynamic compensator drives the tooling and workpiece to rotate synchronously, grinding the workpiece on the grinding tool; (8) After grinding is completed, the lifting plate rises and drives the dynamic compensator and workpiece to rise; (9) Repeat steps (5) to (8) until the set grinding times are completed; (10) The separation mechanism works, and the separation cylinder drives the separation claw forward and grabs the sliding guide column to separate it from the tooling; (11) The lifting plate drives the dynamic compensator to rise to the specified position, and the workpiece and tooling remain on the grinding tool; (12) The rotating turntable mechanism drives the grinding tool to rotate and moves the ground workpiece to the designated workstation. The robot then cooperates with the pneumatic gripper to pick up and place it at the designated workstation. (13) Repeat the above steps until all workpieces are ground.

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