Workpiece machining double-end-face grinding device and method thereof

Abstract

The application provides a workpiece machining double-end face grinding machining device and method, and relates to the technical field of workpiece machining. The device comprises a lower grinding group, a feeding assembly and a multi-element clamp. The lower grinding group is located at the center of a base. First and second conveying belts are arranged in a circle on the base at the outer side of the lower grinding group. A plurality of mechanical arms are arranged at equal angles on the edge of the top of the base. The multi-element clamp is rotatably arranged on the mechanical arm. The front and rear ends of the base are provided with side seats. The feeding assembly is used to convey workpieces to the first conveying belt and distribute them. The workpieces are clamped by a plurality of multi-element clamps in cooperation with the positioning of the mechanical arms. Since the multi-element clamp can clamp the workpieces from the top and bottom, the workpieces on the first conveying belt can be sent to the inside of the lower grinding group while being flipped and clamped synchronously to take out the machined workpieces to the second conveying belt. The machined workpieces are discharged by the discharge conveying belt. Thus, the layout is used for automatic feeding and discharging of a plurality of groups, thereby improving the machining efficiency.

Description

Technical Field

[0001] This invention relates to the field of workpiece processing technology, and in particular to a workpiece processing apparatus and method for double-end face grinding. Background Technology

[0002] In the field of machining, double-end grinding is widely used in precision workpiece machining scenarios where flatness, parallelism, and surface roughness requirements are high. Typical applications include bearing rings, gears, piston rings, hydraulic components, seals, and various ring or disc-shaped parts. These workpieces typically require simultaneous machining of two opposing end faces through double-end grinding to achieve high-efficiency and high-precision synchronous forming. Especially in mass production, double-end grinding machines have become key equipment for ensuring workpiece dimensional consistency and surface quality.

[0003] However, existing automated feeding technologies for double-end grinding still have significant drawbacks: traditional manual clamping methods are inefficient and cannot meet the needs of modern large-scale production; although some robotic solutions have been introduced, their workpiece adaptability is extremely poor—there is a lack of stable anti-deformation clamping and positioning structures for ring-shaped workpieces, and for flat workpieces without internal support features and non-magnetic materials (such as copper alloys and ceramics), the different adsorption methods make it impossible to effectively pick up and put down the workpieces. These technical limitations directly lead to long equipment changeover times, unstable production cycles, and an inability to meet the flexible production needs of multiple varieties and small batches of workpieces, which seriously restricts the upgrading of double-end grinding processes. Therefore, this invention proposes a workpiece processing double-end grinding device and method to solve the problems existing in the prior art. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a workpiece processing double-end face grinding apparatus and method. The apparatus uses a feeding assembly to transport workpieces to a first conveyor belt and distribute them. Multiple sets of multi-element clamps, in conjunction with the positioning of a robotic arm, hold the workpieces. Since the multi-element clamps can hold the workpieces from both the top and bottom surfaces, while the workpieces on the first conveyor belt are being fed into the lower grinding group, they can be flipped and simultaneously clamped and removed to the second conveyor belt, where they are discharged in conjunction with the discharge conveyor belt. Thus, this layout enables automated loading and unloading of multiple sets of workpieces, improving processing efficiency.

[0005] To achieve the objectives of this invention, the invention is implemented through the following technical solution: a workpiece processing double-end face grinding apparatus and method, comprising a lower grinding group, a feeding assembly, and a multi-element fixture. The lower grinding group is located at the center of a base, and a first conveyor belt and a second conveyor belt are arranged in a circular pattern on the base at the outer position of the lower grinding group. Several sets of robotic arms are provided at equal included angles at the top edge of the base. The multi-element fixture is rotatably mounted on the robotic arms. Side seats are provided at both the front and rear ends of the base, and a top seat is connected to the side seats through a bracket. An upper grinding group adapted to the lower grinding group is provided at the middle position below the top seat. The feeding assembly is connected to the front end below the top seat, and a discharge conveyor belt is connected to the rear end of the second conveyor belt.

[0006] The feeding assembly is used to feed the workpiece to the first conveyor belt, and the multi-faceted clamp is used to clamp the workpiece from the top and bottom. While feeding the workpiece on the first conveyor belt into the lower grinding group, the processed workpiece is taken out to the second conveyor belt and discharged through the discharge conveyor belt.

[0007] A further improvement is that shock absorbers are provided at the bottom of both the base and the side seats, and multiple sets of shock absorbers are provided, with a bottom compartment located below the shock absorbers.

[0008] A further improvement is made in that: the lower grinding assembly includes a grinding chamber and a main gear. The main gear is rotatably located in the middle position inside the grinding chamber. A gear ring is provided at the edge inside the grinding chamber, and planetary gears adapted to the main gear and gear ring are movably arranged inside the grinding chamber. Several sets of planetary gears are provided, and workpiece grooves adapted to the workpiece are provided on the planetary gears. A lower grinding plate for grinding the bottom surface of the workpiece is provided at the bottom inside the grinding chamber. The bottom of the grinding chamber is connected to a first support plate through a support shaft, and the first support plate is fixed to the base.

[0009] A further improvement is that the upper grinding assembly includes a pressure cylinder and a second support plate. The pressure cylinder is connected to the middle of the bottom of the top seat, the second support plate is located at the output end of the pressure cylinder, and a support column is connected below the second support plate. A mounting plate is located below the support column, and an upper grinding plate is located below the mounting plate. The upper grinding plate is used to grind the top surface of the workpiece.

[0010] A further improvement is made in that: the feeding assembly includes a material cylinder, a feeding bin, and a pushing cylinder. The material cylinder is located at the front end below the top seat, the feeding bin is located below the material cylinder, the pushing cylinder is located inside the bracket at the front end, and the output end of the pushing cylinder is provided with a push plate. The inside of the material cylinder is provided with a material groove that matches the arrangement of the workpiece groove. One end of the push plate is provided with an arrangement hole that matches the material groove. One end of the bottom of the feeding bin is provided with a discharge arrangement plate that matches the arrangement hole. The front end inside the top seat is provided with a feeding conveyor belt, and the feeding conveyor belt faces the inlet of the material cylinder.

[0011] A further improvement is that the robotic arm includes a first arm and a second arm, the second arm is hinged above the first arm, an adjusting cylinder is hinged to one side of the first arm, and the output end of the adjusting cylinder is hinged to the second arm, one end of the second arm is provided with a hinge joint, and a first lifting cylinder is hinged inside the hinge joint, a second lifting cylinder is provided at the output end of the first lifting cylinder, and the multi-element clamp is located at the output end of the second lifting cylinder.

[0012] A further improvement is made in that: the multi-element clamp includes a rotating base and a base plate. The rotating base is rotatably connected to the output end of the second lifting cylinder via a motor drive. The base plate is provided at both the upper and lower ends of the rotating base. Several sets of magnetic suction components, adsorption components, and support components are arranged sequentially from the outside to the inside on the base plate. The magnetic suction component includes a first telescopic rod, an electromagnet, and a telescopic top rod. The electromagnet is located at the output end of the first telescopic rod. The adsorption component includes a second telescopic rod and a suction seat. The suction seat is located at the output end of the second telescopic rod and has a suction cup. The suction cup is connected to a suction pump via a conduit. The support component includes a third telescopic rod, a limiting plate, and an airbag. The limiting plate is located at the output end of the third telescopic rod, and the airbag is located at the bottom of the limiting plate. The airbag is connected to an air pump via a conduit to control its contraction and expansion. The lower end of the airbag has a support plate, and a support is located below the support plate.

[0013] A further improvement is that the bracket includes a bracket and an adjusting gear. The adjusting gear is rotatably located at the middle position below the bracket. Several sets of sliding rods are slidably provided on the outer side of the bracket, and the outer end of the sliding rod is provided with a supporting edge. The adjusting gear is provided with an arc-shaped groove. One end of the sliding rod is provided with a protrusion that matches the arc-shaped groove. A drive gear is provided on one side of the bracket, and the drive gear matches the adjusting gear.

[0014] A further improvement is that: both the first and second conveyor belts are composed of two sets of semi-circular conveyor belts, and the rear end of the second conveyor belt is provided with a guide plate, which is used to guide the workpiece to the discharge conveyor belt.

[0015] A method for grinding a workpiece with two end faces includes the following steps:

[0016] Start the feeding assembly to transport the workpiece to the first conveyor belt, and the first conveyor belt will distribute the workpiece as it runs.

[0017] Multiple sets of robotic arms move and operate various grippers to clamp the workpiece to be processed on the first conveyor belt through the bottom surface and send it to the lower grinding group;

[0018] The multi-element fixtures are first flipped over, turning the empty top surface to the bottom surface, clamping the workpiece that has been processed in the lower grinding group, and then flipped back to unload the clamped workpiece to be processed into the lower grinding group.

[0019] The upper grinding unit presses down, working in conjunction with the lower grinding unit to perform double-end surface grinding on the workpiece;

[0020] The robotic arm moves and operates the multi-grid to send the processed workpiece to the second conveyor belt, which then transports it to the discharge conveyor belt for discharge.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. This invention uses a feeding assembly to transport workpieces to the first conveyor belt and distribute them. Multiple sets of multi-element clamps, in conjunction with the positioning of the robotic arm, hold the workpieces. Since the multi-element clamps can hold the workpieces from both the top and bottom, while sending the workpieces on the first conveyor belt to the lower grinding group, the workpieces can be flipped and simultaneously clamped and removed to the second conveyor belt, and then discharged in conjunction with the discharge conveyor belt. Thus, this layout enables multiple sets of automated loading and unloading, improving processing efficiency.

[0023] 2. The multi-functional clamp of the present invention includes a magnetic suction component, an adsorption component, and a through-support component. The electromagnet of the magnetic suction component can adsorb metal workpieces that are not internally supported and are entirely planar. The suction cup of the adsorption component can adsorb workpieces made of non-magnetic materials. The through-support component allows the through-plate and airbag to pass through the inner side of the ring-shaped workpiece and be positioned in conjunction with the limiting plate. The expansion of the airbag fixes the workpiece, and the support below supports the workpiece, thereby fixing the ring-shaped workpiece and preventing it from deforming or tilting. In summary, the multi-functional clamp is suitable for different types of workpieces and has a wide range of applications. Attached Figure Description

[0024] Figure 1 This is the front view of the present invention;

[0025] Figure 2 This is a schematic diagram of the bottom of the present invention;

[0026] Figure 3 This is a schematic diagram of the lower grinding assembly of the present invention;

[0027] Figure 4 This is a schematic diagram of the upper grinding assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the feeding assembly of the present invention;

[0029] Figure 6 This is a schematic diagram of the robotic arm of the present invention;

[0030] Figure 7 This is a schematic diagram of the multi-component clamp of the present invention;

[0031] Figure 8 This is a schematic diagram of the support assembly of the present invention;

[0032] Figure 9 This is a schematic diagram of the support device of the present invention;

[0033] Figure 10 This is a schematic diagram of the guide plate of the present invention.

[0034] The components include: 1. Lower grinding assembly; 2. Feeding assembly; 3. Multi-element clamp; 4. Base; 5. First conveyor belt; 6. Second conveyor belt; 7. Robotic arm; 8. Side seat; 9. Support frame; 10. Top seat; 11. Discharge conveyor belt; 12. Shock absorber; 13. Bottom bin; 14. Grinding bin; 15. Main gear; 16. Gear ring; 17. Planetary gear; 18. Workpiece groove; 19. Lower grinding plate; 20. First support plate; 21. Pressure cylinder; 22. Second support plate; 23. Mounting plate; 24. Support column; 25. Upper grinding plate; 26. Material cylinder; 27. Feeding bin; 28. Pushing cylinder; 29. ​​Push plate; 30. Discharge... 31. Feeding plate; 32. Feeding conveyor belt; 33. First support arm; 34. Second support arm; 35. Adjusting cylinder; 36. First lifting cylinder; 37. Second lifting cylinder; 38. Rotating seat; 39. Base plate; 40. First telescopic rod; 41. Electromagnet; 42. Telescopic top rod; 43. Second telescopic rod; 44. Suction seat; 45. Suction cup; 46. Third telescopic rod; 47. Limiting plate; 48. Airbag; 49. Through plate; 50. Support; 51. Bracket; 52. Adjusting gear; 53. Slide rod; 54. Support edge; 55. Arc groove; 56. Protrusion; 57. Drive gear; 58. Guide plate. Detailed Implementation

[0035] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0036] Example 1

[0037] according to Figure 1-10 As shown in the figure, this embodiment proposes a workpiece processing double-end face grinding device, including a lower grinding group 1, a feeding assembly 2 and a multi-element fixture 3. The lower grinding group 1 is located at the center of a base 4, and a first conveyor belt 5 and a second conveyor belt 6 are arranged in a circular pattern on the base 4 at the outer position of the lower grinding group 1. Several sets of robotic arms 7 are provided at equal included angles at the top edge of the base 4. The multi-element fixture 3 is rotatably mounted on the robotic arms 7. Side seats 8 are provided at both the front and rear ends of the base 4, and a top seat 10 is connected to the side seats 8 through a bracket 9. An upper grinding group adapted to the lower grinding group is provided at the middle position below the top seat 10. The feeding assembly 2 is connected to the front end below the top seat 10, and the rear end of the second conveyor belt is connected to an outlet conveyor belt 11.

[0038] The feeding assembly 2 is used to feed workpieces to the first conveyor belt 5, and the multi-faceted clamping fixture 3 is used to clamp the workpieces from both the top and bottom. While feeding the workpieces from the first conveyor belt 5 into the lower grinding group 1, the processed workpieces are simultaneously removed and fed to the second conveyor belt 6, and then discharged via the discharge conveyor belt 11. In use, the feeding assembly 2 feeds workpieces to the first conveyor belt 5 and distributes them. Multiple sets of multi-faceted clamping fixtures 3, in conjunction with the positioning of the robotic arm, clamp the workpieces. Since the multi-faceted clamping fixtures 3 can clamp the workpieces from both the top and bottom, while feeding the workpieces from the first conveyor belt 5 into the lower grinding group 1, they can be flipped and synchronously clamped to remove the processed workpieces to the second conveyor belt 6, and then discharged via the discharge conveyor belt 11. Thus, this layout enables multiple automated feeding and unloading processes, improving processing efficiency.

[0039] Both the base 4 and the side seat 8 are equipped with shock absorbers 12 at their bottoms, and multiple sets of shock absorbers 12 are provided. A base chamber 13 is located below the shock absorbers 12. In use, the base 4 and the side seat 8 are placed on the ground via the shock absorbers 12 and the base chamber 13 to improve overall stability.

[0040] The lower grinding assembly 1 includes a grinding chamber 14 and a main gear 15. The main gear 15 is rotatably located in the middle position inside the grinding chamber 14. A gear ring 16 is provided at the edge inside the grinding chamber 14, and planetary gears 17 adapted to the main gear 15 and gear ring 16 are movably provided inside the grinding chamber 14. Several sets of planetary gears 17 are provided, and workpiece grooves 18 adapted to the workpiece are provided on the planetary gears 17. A lower grinding plate 19 for grinding the bottom surface of the workpiece is provided at the bottom inside the grinding chamber 14. The bottom of the grinding chamber 14 is connected to a first support plate 20 through a support shaft, and the first support plate 20 is fixed to the base 4. The upper grinding assembly includes a pressure cylinder 21 and a second support plate 22. The pressure cylinder 21 is connected to the middle of the bottom of the top seat 10. The second support plate 22 is located at the output end of the pressure cylinder 21, and a support column 24 is connected below the second support plate 22. A mounting plate 23 is located below the support column 24, and an upper grinding plate 25 is located below the mounting plate 23. The upper grinding plate 25 is used to grind the top surface of the workpiece. In use, the workpiece is placed in the workpiece slot 18. Driven by the main gear 15, the planetary gear 17 is moved in conjunction with the gear ring 16, so that the workpiece inside and the lower grinding plate 19 below are ground. At the same time, the pressure cylinder 21 pushes down the second support plate 22, so that the upper grinding plate 25 is pressed on the top of the workpiece, and the top surface of the workpiece is ground, thereby performing double-end surface grinding.

[0041] The feeding assembly 2 includes a material cylinder 26, a feeding bin 27, and a pushing cylinder 28. The material cylinder 26 is located at the front end below the top seat 10, the feeding bin 27 is located below the material cylinder 26, and the pushing cylinder 28 is located inside the front support 9. The output end of the pushing cylinder 28 is provided with a push plate 29. The inside of the material cylinder 26 is provided with a material groove that matches the workpiece groove 18. One end of the push plate 29 is provided with an arrangement hole 30 that matches the material groove. One end of the bottom of the feeding bin 27 is provided with a discharge arrangement plate 31 that matches the arrangement hole 30. The front end inside the top seat 10 is provided with a feeding conveyor belt 32, and the feeding conveyor belt 32 faces the inlet of the material cylinder 26. In use, the feeding conveyor belt 32 delivers the workpiece to the material cylinder 26, where it can be stacked manually or directly dropped into the material trough inside the material cylinder 26. The workpiece below falls into the arrangement hole 30 of the push plate 29, and then the pushing cylinder 28 pushes the push plate 29 to deliver the workpiece to the unloading arrangement plate 31, from the unloading port of the unloading arrangement plate 31 onto the first conveyor belt 5 for unloading.

[0042] The robotic arm 7 includes a first arm 33 and a second arm 34. The second arm 34 is hinged above the first arm 33. An adjusting cylinder 35 is hinged to one side of the first arm 33, and the output end of the adjusting cylinder 35 is hinged to the second arm 34. One end of the second arm 34 is provided with a hinge joint, and a first lifting cylinder 36 is hinged inside the hinge joint. A second lifting cylinder 37 is provided at the output end of the first lifting cylinder 36. The multi-element clamp 3 is located at the output end of the second lifting cylinder 37. In use, the adjusting cylinder 35 pushes the second arm 34, causing the second arm 34 to rotate on the first arm 33, which facilitates changing the angle of the multi-element clamp 3. The position of the multi-element clamp 3 can be changed by extending and retracting the first lifting cylinder 36 and the second lifting cylinder 37.

[0043] The multi-element clamp 3 includes a rotating base 38 and a base plate 39. The rotating base 38 is rotatably connected to the output end of the second lifting cylinder 37 via a motor drive. The base plate 39 is provided at both the upper and lower ends of the rotating base 38. Several sets of magnetic attraction components, adsorption components, and support components are sequentially arranged on the base plate 39 from the outside to the inside. The magnetic attraction component includes a first telescopic rod 40, an electromagnet 41, and a telescopic top rod 42. The electromagnet 41 is located at the output end of the first telescopic rod 40. The adsorption component includes a second telescopic rod 43 and... The suction base 44 is located at the output end of the second telescopic rod 43. The suction base 44 is provided with a suction cup 45, which is connected to a suction pump through a conduit. The through-support assembly includes a third telescopic rod 46, a limiting plate 47, and an airbag 48. The limiting plate 47 is located at the output end of the third telescopic rod 46, and the airbag 48 is located at the bottom of the limiting plate 47. The airbag 48 is connected to an air pump through a conduit to control its contraction and expansion. The lower end of the airbag 48 is provided with a through-plate 49, and a support 50 is provided below the through-plate 49. The multi-functional clamp 3 includes a magnetic suction component, an adsorption component, and a through-and-support component. In the magnetic suction component, the first telescopic rod 40 drives the electromagnet 41 to rise and fall, which can adsorb metal workpieces without internal support features and a flat surface. During unloading, the telescopic top rod 42 can push down the planetary gear 17 to prevent it from being magnetically attracted. In the adsorption component, the second telescopic rod 43 drives the suction base 44 to rise and fall, and the suction cup 45 can adsorb non-magnetic workpieces. In the through-and-support component, the third telescopic rod 46 drives the limiting plate 47 to rise and fall, which can pass the through-and-support plate 49 and the airbag 48 through the inside of the ring-shaped workpiece. With the limiting plate 47 limiting the position, the diameter of the limiting plate 47 is larger than the inner diameter of the ring-shaped workpiece, while the diameters of the through-and-support plate 49, the retracted airbag 48, and the retracted support 50 are smaller than the inner diameter of the ring-shaped workpiece. The expansion of the airbag 48 fixes the workpiece from the inside, and the opening of the support 50 supports the workpiece from below, thereby fixing the ring-shaped workpiece and preventing its deformation and tilting. In summary, the multi-functional clamping is suitable for different types of workpieces and has a wide range of applications.

[0044] The support 50 includes a bracket 51 and an adjusting gear 52. The adjusting gear 52 is rotatably positioned at the center below the bracket 51. Several sets of sliding rods 53 are slidably arranged on the outer side of the bracket 51, and the outer ends of the sliding rods 53 are provided with supporting edges 54. The adjusting gear 52 is provided with an arc-shaped groove 55. One end of the sliding rod 53 is provided with a protrusion 56 that matches the arc-shaped groove 55. A drive gear 57 is provided on one side of the bracket 51, and the drive gear 57 matches the adjusting gear 52. In use, the drive gear 57 drives the adjusting gear 52 to rotate. Utilizing the matching effect of the arc-shaped groove 55 and the protrusion 56, the sliding rod 53 is driven to slide on the bracket 51, causing the supporting edges 54 to contract or expand. When expanded, it can support the ring-shaped workpiece from below.

[0045] Example 2

[0046] according to Figure 1-10As shown in the figure, this embodiment proposes a workpiece processing double-end face grinding device, including a lower grinding group 1, a feeding assembly 2 and a multi-element fixture 3. The lower grinding group 1 is located at the center of a base 4, and a first conveyor belt 5 and a second conveyor belt 6 are arranged in a circular pattern on the base 4 at the outer position of the lower grinding group 1. Several sets of robotic arms 7 are provided at equal included angles at the top edge of the base 4. The multi-element fixture 3 is rotatably mounted on the robotic arms 7. Side seats 8 are provided at both the front and rear ends of the base 4, and a top seat 10 is connected to the side seats 8 through a bracket 9. An upper grinding group adapted to the lower grinding group is provided at the middle position below the top seat 10. The feeding assembly 2 is connected to the front end below the top seat 10, and the rear end of the second conveyor belt is connected to an outlet conveyor belt 11.

[0047] The feeding assembly 2 is used to feed workpieces to the first conveyor belt 5, and the multi-faceted clamping fixture 3 is used to clamp the workpieces from both the top and bottom. While feeding the workpieces from the first conveyor belt 5 into the lower grinding group 1, the processed workpieces are simultaneously removed and fed to the second conveyor belt 6, and then discharged via the discharge conveyor belt 11. In use, the feeding assembly 2 feeds workpieces to the first conveyor belt 5 and distributes them. Multiple sets of multi-faceted clamping fixtures 3, in conjunction with the positioning of the robotic arm, clamp the workpieces. Since the multi-faceted clamping fixtures 3 can clamp the workpieces from both the top and bottom, while feeding the workpieces from the first conveyor belt 5 into the lower grinding group 1, they can be flipped and synchronously clamped to remove the processed workpieces to the second conveyor belt 6, and then discharged via the discharge conveyor belt 11. Thus, this layout enables multiple automated feeding and unloading processes, improving processing efficiency.

[0048] Both the base 4 and the side seat 8 are equipped with shock absorbers 12 at their bottoms, and multiple sets of shock absorbers 12 are provided. A base chamber 13 is located below the shock absorbers 12. In use, the base 4 and the side seat 8 are placed on the ground via the shock absorbers 12 and the base chamber 13 to improve overall stability.

[0049] Both the first conveyor belt 5 and the second conveyor belt 6 are composed of two sets of semi-circular conveyor belts. The rear end of the second conveyor belt 6 is provided with a guide plate 58, which is used to guide the workpiece to the discharge conveyor belt 11. In use, the workpiece is conveyed to the first conveyor belt 5 and distributed through the feeding assembly 2. The workpiece is clamped by multiple sets of multi-element clamps 3 in conjunction with the adjustment of the robotic arm. Since the multi-element clamps 3 can clamp the workpiece from both the top and bottom, while the workpiece on the first conveyor belt 5 is sent into the lower grinding group 1, it can be flipped and simultaneously clamped to remove the processed workpiece to the second conveyor belt 6. With the guidance of the guide plate 58, the workpiece is guided to the discharge conveyor belt 11 for discharge.

[0050] Example 3

[0051] according to Figure 1-10 As shown in the figure, this embodiment proposes a method for grinding a workpiece with two end faces, including the following steps:

[0052] Start the feeding assembly 2 to transport the workpiece to the first conveyor belt 5. The first conveyor belt 5 runs to distribute the workpiece.

[0053] Multiple robotic arms 7 move and operate multi-functional clamps 3 to clamp the workpiece to be processed on the first conveyor belt 5 through the bottom surface and send it to the lower grinding group 1.

[0054] The multi-group multi-element fixture 3 first flips over, turning the empty top surface to the bottom surface, clamping the workpiece processed in the lower grinding group 1, and then flips back to its original position, unloading the clamped workpiece to be processed into the lower grinding group 1; this layout enables multi-group automated loading and unloading, improving processing efficiency.

[0055] The upper grinding group presses down, working in conjunction with the lower grinding group 1 to perform double-end surface grinding on the workpiece;

[0056] The robotic arm 7 moves, operating the multi-functional gripper 3 to deliver the processed workpiece to the second conveyor belt 6, and then to the discharge conveyor belt 11 for discharge. The multi-functional gripper 3 can clamp in various ways, adapting to different types of workpieces and has a wide range of applications.

[0057] This invention uses a feeding assembly 2 to transport workpieces to the first conveyor belt 5 and distribute them. Multiple sets of multi-element clamps 3, in conjunction with the positioning of the robotic arm, clamp the workpieces. Since the multi-element clamps 3 can clamp the workpieces from both the top and bottom, while sending the workpieces on the first conveyor belt 5 into the lower grinding group 1, they can be flipped and simultaneously clamped to remove the processed workpieces to the second conveyor belt 6, and then discharged in conjunction with the discharge conveyor belt 11. Thus, this layout enables multiple sets of automated loading and unloading, improving processing efficiency. Meanwhile, the multi-functional clamp 3 includes a magnetic suction component, an adsorption component, and a through-support component. The electromagnet 41 of the magnetic suction component can adsorb metal workpieces that are not internally supported and are entirely planar. The suction cup 45 of the adsorption component can adsorb workpieces made of non-magnetic materials. The through-support component allows the through-plate 49 and the airbag 48 to pass through the inside of the ring-shaped workpiece and be limited by the limiting plate 47. The expansion of the airbag 48 is used to fix the workpiece, and the support 50 below supports the workpiece, thereby fixing the ring-shaped workpiece and preventing it from deforming or tilting. In summary, the multi-functional clamping is suitable for different types of workpieces and has a wide range of applications.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A workpiece machining double-end face grinding apparatus, comprising a lower grinding assembly, a feeding assembly, and a multi-element fixture, characterized in that: The lower grinding group is located at the center of the base, and a first conveyor belt and a second conveyor belt are arranged in a circular pattern on the base at the outer position of the lower grinding group. Several sets of robotic arms are provided at equal included angles at the top edge of the base. The multi-element clamp is rotatably mounted on the robotic arms. Side seats are provided at both the front and rear ends of the base, and a top seat is connected to the side seats through a bracket. An upper grinding group adapted to the lower grinding group is provided at the middle position below the top seat. The feeding assembly is connected to the front end below the top seat. The rear end of the second conveyor belt is connected to the discharge conveyor belt. The feeding assembly is used to feed the workpiece to the first conveyor belt, and the multi-faceted clamp is used to clamp the workpiece from the top and bottom surfaces. While feeding the workpiece on the first conveyor belt into the lower grinding group, the processed workpiece is taken out to the second conveyor belt and discharged through the discharge conveyor belt. The robotic arm includes a first arm and a second arm. The second arm is hinged above the first arm. An adjusting cylinder is hinged to one side of the first arm, and the output end of the adjusting cylinder is hinged to the second arm. One end of the second arm has a hinge joint, and a first lifting cylinder is hinged inside the hinge joint. A second lifting cylinder is located at the output end of the first lifting cylinder. The multi-element clamp is located at the output end of the second lifting cylinder. The multi-element clamp includes a rotating base and a base plate. The rotating base is rotatably connected to the output end of the second lifting cylinder by a motor drive. The base plate is located at both the upper and lower ends of the rotating base. The base plate is arranged from the outside to the inside... The device is equipped with several sets of magnetic suction components, adsorption components, and support components. The magnetic suction component includes a first telescopic rod, an electromagnet, and a telescopic top rod. The electromagnet is located at the output end of the first telescopic rod. The adsorption component includes a second telescopic rod and a suction base. The suction base is located at the output end of the second telescopic rod and has a suction cup. The suction cup is connected to a suction pump via a conduit. The support component includes a third telescopic rod, a limiting plate, and an airbag. The limiting plate is located at the output end of the third telescopic rod, and the airbag is located at the bottom of the limiting plate. The airbag is connected to an air pump via a conduit to control its contraction and expansion. The lower end of the airbag has a support plate, and a support is located below the support plate.

2. The workpiece machining double-end face grinding apparatus according to claim 1, characterized in that: Both the base and the side seats are equipped with shock absorbers at their bottoms, and multiple sets of shock absorbers are provided. A bottom compartment is located below the shock absorbers.

3. The workpiece machining double-end face grinding apparatus according to claim 1, characterized in that: The lower grinding assembly includes a grinding chamber and a main gear. The main gear is rotatably located in the middle of the grinding chamber. A gear ring is provided at the edge of the grinding chamber. Planetary gears that are adapted to the main gear and gear ring are movably arranged inside the grinding chamber. Several sets of planetary gears are provided, and workpiece grooves adapted to the workpiece are provided on the planetary gears. A lower grinding plate for grinding the bottom surface of the workpiece is provided at the bottom of the grinding chamber. The bottom of the grinding chamber is connected to a first support plate through a support shaft, and the first support plate is fixed to the base.

4. The workpiece machining double-end face grinding apparatus according to claim 1, characterized in that: The upper grinding assembly includes a pressure cylinder and a second support plate. The pressure cylinder is connected to the middle of the bottom of the top seat. The second support plate is located at the output end of the pressure cylinder, and a support column is connected below the second support plate. A mounting plate is located below the support column, and an upper grinding plate is located below the mounting plate. The upper grinding plate is used to grind the top surface of the workpiece.

5. The workpiece machining double-end face grinding apparatus according to claim 3, characterized in that: The feeding assembly includes a material cylinder, a feeding bin, and a pushing cylinder. The material cylinder is located at the front end below the top seat, the feeding bin is located below the material cylinder, and the pushing cylinder is located inside the front support. The output end of the pushing cylinder is provided with a push plate. The inside of the material cylinder is provided with a material groove that matches the workpiece groove arrangement. One end of the push plate is provided with an arrangement hole that matches the material groove. One end of the bottom of the feeding bin is provided with a discharge arrangement plate that matches the arrangement hole. The front end inside the top seat is provided with a feeding conveyor belt that faces the inlet of the material cylinder.

6. The workpiece machining double-end face grinding apparatus according to claim 1, characterized in that: The bracket includes a bracket and an adjusting gear. The adjusting gear is rotatably located at the middle position below the bracket. Several sets of sliding rods are slidably provided on the outer side of the bracket, and the outer end of the sliding rod is provided with a supporting edge. The adjusting gear is provided with an arc-shaped groove. One end of the sliding rod is provided with a protrusion that matches the arc-shaped groove. A drive gear is provided on one side of the bracket, and the drive gear matches the adjusting gear.

7. The workpiece machining double-end face grinding apparatus according to claim 1, characterized in that: The first conveyor belt and the second conveyor belt are both composed of two sets of semi-circular conveyor belts. The rear end of the second conveyor belt is provided with a guide plate, which is used to guide the workpiece to the discharge conveyor belt.

8. A method for grinding a workpiece with two end faces, using the workpiece grinding apparatus for grinding two end faces as described in any one of claims 1-7, characterized in that, Includes the following steps: Start the feeding assembly to transport the workpiece to the first conveyor belt, and the first conveyor belt will distribute the workpiece as it runs. Multiple sets of robotic arms move and operate various grippers to clamp the workpiece to be processed on the first conveyor belt through the bottom surface and send it to the lower grinding group; The multi-element fixtures are first flipped over, turning the empty top surface to the bottom surface, clamping the workpiece that has been processed in the lower grinding group, and then flipped back to unload the clamped workpiece to be processed into the lower grinding group. The upper grinding unit presses down, working in conjunction with the lower grinding unit to perform double-end surface grinding on the workpiece; The robotic arm moves and operates the multi-grid to send the processed workpiece to the second conveyor belt, which then transports it to the discharge conveyor belt for discharge.

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