Double-end-face grinding machine tool of lever pressure applying structure

Abstract

The invention relates to the technical field of grinding equipment, in particular to a double-end-face grinding machine tool of a lever pressure applying structure, which comprises a lower grinding disc, at least one outer wheel disc is arranged on the lower grinding disc, and a storage cavity and a plurality of positioning holes II are uniformly formed in the inner surface of the outer wheel disc; according to the double-end-face grinding machine tool of the lever pressure applying structure, the wandering star wheel structure adopts the combined design of the outer wheel disc and the inner wheel disc, the inner wheel disc can be flexibly disassembled and assembled according to the specification of a workpiece in cooperation with the detachable clamping assembly, and meanwhile the synchronous clamping structure can be used for clamping the inner wheel disc through synchronous rotation of a clamping plate and the locking effect of a one-way bearing; according to the jig, independent limiting of circular workpieces and strip-shaped workpieces with different diameters is achieved, mixed limiting of the circular workpieces and the strip-shaped workpieces can be completed, multiple workpieces with different sizes can be limited at the same time, the machining compatibility of the wandering star wheel is greatly improved, wandering star wheels do not need to be independently customized for the workpieces with different specifications, and the production cost of the jig is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and specifically to a double-end grinding machine tool with a lever pressure structure. Background Technology

[0002] Double-end grinding machines, as core equipment for precision machining of hard and brittle materials, are widely used in the field of double-sided parallel machining of bearings, seals, cemented carbide parts, and other components. They achieve uniform contact grinding between the workpiece and the upper and lower grinding discs by driving a planetary gear through external and internal gear columns. The planetary gear, as the direct load-bearing and positioning component of the workpiece, has a structural design that directly determines the machine's machining compatibility, precision stability, and production efficiency.

[0003] For some thicker workpieces, the planetary wheel needs to have a corresponding thickness to ensure load-bearing strength. For thicker workpieces, the mainstream design of existing planetary wheels is to directly open through holes on the planetary wheel body that match the shape and size of the workpiece. The workpiece is positioned by being embedded in the hole. This method has poor structural adaptability because the shape and size of the through hole are specific. In use, one through hole can only match a workpiece of a single size and shape. Therefore, planetary wheels need to be customized for each specification of workpiece, which increases the tooling production cost.

[0004] Therefore, a double-end grinding machine tool with a lever-applying pressure structure is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides a double-end grinding machine tool with a lever-applying structure, which aims to solve the technical problem of matching a planetary wheel with a workpiece of a single size and shape in related technologies.

[0006] The present invention provides a double-end face grinding machine tool with a lever-applying structure, comprising a lower grinding disc, and further comprising: At least one outer wheel is set on the lower grinding disc, and the inner surface of the outer wheel is evenly provided with a receiving cavity and multiple positioning holes. The inner wheel is located inside the outer wheel. Multiple positioning grooves are opened on one side of the inner wheel. Multiple positioning holes, multiple storage grooves and multiple connecting grooves are evenly opened on the outer surface of the inner wheel. The connecting grooves correspond to the positioning grooves and are connected to the positioning grooves. Multiple positioning structures are set on the inner disc. The positioning structures are used to position the workpiece located inside the positioning groove. Multiple rotating shafts are rotatably arranged inside the storage cavity. Each rotating shaft has a one-way bearing connected to its outer surface, and each one-way bearing has a clamping plate connected to its outer surface. The drive structure is located inside the storage cavity. The drive structure is used to drive multiple rotating shafts to rotate synchronously. The drive structure includes multiple torsion springs. One end of each torsion spring is connected to a clamping plate. Each torsion spring corresponds to a clamping plate. A clamping assembly is located between the outer and inner wheel discs, and is used to connect the outer and inner wheel discs.

[0007] Preferably, the drive structure further includes an internal gear ring, drive gears, and a fixing component. The internal gear ring is rotatably disposed inside the receiving cavity. There are multiple drive gears, all of which mesh with the internal gear ring. Each drive gear is connected to a rotating shaft, and each drive gear corresponds to a rotating shaft. The end of a torsion spring away from the clamping plate is connected to a drive gear, and each torsion spring corresponds to a clamping plate. There is at least one fixing component, which is disposed between the internal gear ring and the outer wheel disc. The fixing component is used to fix the internal gear ring.

[0008] Its effect is that rotating the internal gear ring can drive multiple rotating shafts to rotate synchronously through gear transmission, thereby making all clamping plates move synchronously, realizing synchronous rotation and clamping of multiple clamping plates, and adapting to adaptive limit of workpieces of different specifications, with high clamping efficiency and strong synchronization.

[0009] Preferably, the fixing component includes a limiting rod, a limiting block, and a fixing nut. One end of the limiting rod is connected to the side of the internal gear ring. A limiting groove communicating with the receiving cavity is opened on one side of the outer wheel. The limiting groove is arc-shaped, and the center of the limiting groove is the same as the center of the outer wheel. The limiting rod passes through the inside of the limiting groove, and the diameter of the limiting rod is adapted to the width of the limiting groove. The limiting block is located inside the receiving cavity and is installed on the outer surface of the limiting rod. The fixing nut is threadedly connected to the outer surface of the limiting rod.

[0010] Its effect is to fix the position of the internal gear ring, ensure stable clamping force, and complete the fixing and unlocking by turning the nut, which is convenient to operate.

[0011] Preferably, the positioning structure includes a turntable, positioning locking rods, positioning clamps, and positioning nuts. The turntable is rotatably positioned at the center of the inner disc, and the surface of the turntable is on the same plane as the surface of the inner disc. A receiving hole is provided on one side of the turntable, and multiple arc-shaped guide grooves are evenly provided on the inner wall of the receiving hole. There are multiple positioning locking rods, and the number of positioning locking rods corresponds to the number of arc-shaped guide grooves. The positioning locking rods pass through the inside of the arc-shaped guide grooves, and each positioning locking rod corresponds to one arc-shaped guide groove. A positioning clamp is fixedly connected to the end of each positioning locking rod, and a positioning nut is threaded onto the outer surface of each positioning locking rod. Multiple positioning sliding grooves are evenly provided on one side of the inner disc, and the positioning sliding grooves are connected to the positioning grooves. Each positioning sliding groove corresponds to one positioning groove. The positioning clamp is located inside the positioning sliding groove and is slidably connected to the positioning sliding groove.

[0012] Its effect is that it can form a bidirectional clamping with the clamping plate of the synchronous clamping structure, realize bidirectional precise positioning of strip workpieces, avoid lateral displacement of strip workpieces during grinding, and adapt to simultaneous limiting of multiple strip workpieces.

[0013] Preferably, the clamping assembly includes clamping plates and clamping grooves, and there are multiple clamping grooves and clamping plates. The number of clamping plates is the same as the number of clamping grooves. The clamping plates are connected to the outer surface of the inner wheel, and the clamping grooves are opened on one side of the outer wheel. The clamping plates are clamped into the interior of the clamping grooves.

[0014] Its effect is to enable quick disassembly and assembly and stable connection between the outer and inner wheel discs, ensuring their synchronous movement and improving equipment adaptability and processing accuracy.

[0015] Preferably, it also includes a mounting cover, inside which is provided an upper grinding disc, the upper grinding disc being positioned corresponding to the lower grinding disc. Inside the mounting cover is provided a lever pressure structure, which is connected to the upper grinding disc and is used to apply pressure to the workpiece by the upper grinding disc.

[0016] Preferably, the lever pressure-applying structure includes a force-applying component, a lever, a pull rod, a lifting slide, a telescopic component, a mounting base, and a drive component. The force-applying component is installed inside the mounting cover. One end of the lever is connected to the force-applying component, and the other end of the lever is hinged to the pull rod. The lever is rotatably mounted inside the mounting cover. The lifting slide is hinged to the end of the pull rod. The telescopic component is installed on one side of the lifting slide, and the output end of the telescopic component is connected to the mounting base. The drive component is installed on one side of the mounting base, and the output shaft of the drive component is connected to the upper grinding disc. The drive component is used to drive the upper grinding disc to rotate.

[0017] Preferably, the bottom of the mounting cover is connected to a support base, the top of the support base is connected to a grinding disc base, multiple external toothed columns are mounted in a circular array inside the grinding disc base, a through hole is opened in the middle of one side of the grinding disc base, a toothed column mounting plate is rotatably arranged inside the through hole, multiple internal toothed columns are arranged in a circular array on the top side of the toothed column mounting plate, the outer wheel plate meshes with the external and internal toothed columns, the lower grinding disc is arranged inside the grinding disc base, and a second driving component is arranged on the support base, the output end of the second driving component is connected to the toothed column mounting plate.

[0018] The beneficial effects of this invention are: 1. The planetary wheel structure of this invention adopts a combination design of outer and inner discs, and with a detachable clamping component, the inner disc can be flexibly disassembled and assembled according to the workpiece specifications. At the same time, the synchronous clamping structure can realize the individual positioning of circular workpieces and strip workpieces of different diameters through the synchronous rotation of the clamping plate and the locking action of the one-way bearing. It can also complete the mixed positioning of circular and strip workpieces, and can simultaneously position multiple workpieces of different sizes, which greatly improves the processing compatibility of the planetary wheel. There is no need to customize planetary wheels for workpieces of different specifications, effectively reducing tooling production costs.

[0019] 2. The synchronous clamping structure achieves synchronous rotation of multiple clamping plates through the linkage of the internal gear ring and drive gear. With the force transmission of the torsion spring and the reverse locking function of the one-way bearing, the clamping plates remain in a limited state after contacting the workpiece. The clamping plates that are not in contact can continue to rotate until they are in contact with the workpiece, realizing adaptive clamping for workpieces of various specifications. The positioning structure drives the positioning clamping plate to move through the linkage of the turntable and the arc-shaped guide groove, forming a bidirectional clamping with the clamping plates of the synchronous clamping structure. This greatly improves the accuracy and stability of workpiece positioning and avoids processing errors caused by workpiece displacement during the grinding process. Attached Figure Description

[0020] Figure 1 This is a first-view structural schematic diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the inner and outer discs of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of the outer wheel of the present invention.

[0023] Figure 4 This is a partial cross-sectional structural diagram of the outer wheel of the present invention.

[0024] Figure 5 This is the present invention. Figure 4 A magnified structural diagram at point B in the middle.

[0025] Figure 6 This is a structural schematic diagram of the internal gear ring and its connecting components of the present invention.

[0026] Figure 7 This is a first-view structural schematic diagram of the clamping plate of the present invention.

[0027] Figure 8 This is a second-view structural schematic diagram of the clamping plate of the present invention.

[0028] Figure 9 This is a schematic diagram of the limiting rod of the present invention.

[0029] Figure 10 This is the present invention. Figure 3 A magnified structural diagram of point A in the middle.

[0030] Figure 11 This is a schematic diagram of the structure of the inner and outer discs of the present invention for fixing workpieces of different diameters.

[0031] Figure 12 This is a schematic diagram of the structure of the inner disc of the present invention.

[0032] Figure 13 This is the present invention. Figure 12 A schematic diagram of the structure without the positioning structure assembled in the middle.

[0033] Figure 14 This is a schematic diagram of the positioning structure of the present invention.

[0034] Figure 15 This is a schematic diagram of the second perspective structure of the present invention.

[0035] Figure 16 This is a third-view structural diagram of the present invention.

[0036] Figure 17 This is a structural schematic diagram of the support base and its connecting components of the present invention.

[0037] Figure 18 This is a structural schematic diagram of the mounting cover and its connecting components of the present invention.

[0038] Figure label: 10. Grinding machine body; 11. Lower grinding disc; 12. Upper grinding disc; 20. Outer wheel; 201. Positioning hole two; 202. Receiving cavity; 203. Limiting groove; 204. Clamping groove; 21. Inner wheel; 211. Positioning groove; 212. Positioning hole one; 213. Receiving groove; 214. Connecting groove; 215. Positioning slide groove; 22. Clamping plate; 30. Positioning structure; 31. Turntable; 311. Arc-shaped guide groove; 32. Positioning locking rod; 33. Positioning clamping plate; 34. Positioning nut; 40. Synchronous clamping structure; 41. 42. Shaft; 43. One-way bearing; 44. Clamping plate; 45. Internal gear ring; 46. Drive gear; 47. Torsion spring; 48. Limiting rod; 49. Limiting block; 50. Fixing nut; 51. Mounting cover; 52. Force-applying component; 53. Lever; 54. Pull rod; 55. Lifting slide; 56. Telescopic component; 57. Mounting base; 58. Drive component one; 59. Guide rail; 50. Guide rail slide; 510. Support base; 511. Grinding disc base; 512. External gear column; 513. Gear column mounting plate; 514. Internal gear column; 515. Drive component two. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0040] like Figures 1 to 18As shown, a double-end face grinding machine tool with a lever-applying pressure structure according to the present invention includes a grinding machine body 10, a planetary wheel structure, a positioning structure 30, and a synchronous clamping structure 40. The grinding machine body 10 includes a lower grinding disc 11 and an upper grinding disc 12. The planetary wheel structure is disposed on the lower grinding disc 11. There are multiple planetary wheel structures, each including an outer disc 20 and an inner disc 21. The inner disc 21 is disposed inside the outer disc 20, and the outer diameter of the inner disc 21 is adapted to the inner diameter of the outer disc 20. A clamping assembly is provided between the outer wheel 20 and the inner wheel 21. The clamping assembly is used to connect the outer wheel 20 and the inner wheel 21. Multiple positioning grooves 211 are provided on one side of the inner wheel 21. The multiple positioning grooves 211 are distributed in a circular array about the center of the inner wheel 21. A positioning structure 30 is provided on the inner wheel 21. The positioning structure 30 is used to position the workpiece located inside the positioning groove 211. Multiple positioning holes 212, multiple receiving grooves 213 and multiple connecting grooves 214 are uniformly provided on the outer surface of the inner wheel 21. The connecting groove 214 corresponds to the positioning groove 211, and the connecting groove 214 and the positioning groove 211 are connected. The connecting groove 214 and the positioning groove 211 are in a one-to-one correspondence. The receiving groove 213 is not connected to the connecting groove 214. Multiple positioning holes 201 and receiving cavities 202 are evenly distributed on the inner surface of the outer wheel 20. Both positioning holes 201 and positioning holes 212 are semi-circular in shape, with the same diameter and the same number. Correspondingly, positioning hole 201 corresponds one-to-one with positioning hole 212. The synchronous clamping structure 40 includes multiple rotating shafts 41 rotatably disposed inside the receiving cavity 202. The number of rotating shafts 41 corresponds to the number of positioning holes 201. Each rotating shaft 41 has a one-way bearing 42 connected to its outer surface, and each one-way bearing 42 has a clamping plate 43 connected to its outer surface. The receiving cavity 202 is provided with a driving structure, which is used to drive the multiple rotating shafts 41 to rotate synchronously so that the multiple clamping plates 43 clamp the workpiece synchronously.

[0041] The working principle for limiting a circular workpiece alone is as follows: When the diameter of the workpiece to be ground is larger than the diameter of the positioning hole 212, the inner wheel 21 is removed. At this time, the workpiece is placed inside the outer wheel 20, and multiple rotating shafts 41 are rotated synchronously through the drive structure, thereby causing multiple clamping plates 43 to rotate synchronously and move out from the inside of the receiving cavity 202, so that multiple clamping plates 43 contact the outer surface of the workpiece synchronously, thereby limiting the multiple workpieces. When the diameter of the workpiece to be ground is smaller than the diameter of the positioning hole 212, the inner wheel 21 and the outer wheel 20 are connected by the clamping assembly. At this time, the positioning hole 212 and the positioning hole 201 form a space for placing the workpiece. Then, the workpiece is placed inside the positioning hole 212 and the positioning hole 201. Then, the drive structure makes multiple rotating shafts 41 rotate synchronously, which in turn makes multiple clamping plates 43 rotate synchronously and move out from the inside of the receiving cavity 202 and into the space formed by the positioning hole 212 and the positioning hole 201. At this time, a part of the clamping plate 43 is located inside the receiving groove 213 and the connecting groove 214. The multiple clamping plates 43 contact the outer surface of the workpiece, thereby limiting the multiple workpieces. like Figure 11 As shown, if the diameters of the workpieces placed inside the multiple positioning holes 212 and multiple positioning holes 201 are different, when one clamping plate 43 contacts the outer surface of the workpiece, the clamping plate 43 will not rotate in the opposite direction under the limiting action of the one-way bearing 42. At this time, the rotating shaft 41 connected to the clamping plate 43 is in an idle state. The other clamping plates 43 that are not in contact with the workpiece continue to rotate until they contact the outer surface of the workpiece, thereby limiting the other workpieces. Thus, it is possible to limit the workpieces of different diameters. The angles of rotation of the multiple clamping plates 43 are different.

[0042] The working principle for limiting a strip-shaped workpiece individually is as follows: The workpiece is placed inside the positioning groove 211, with one side of the workpiece in contact with the inner wall of the positioning groove 211. At this time, the driving structure causes multiple rotating shafts 41 to rotate synchronously, thereby causing multiple clamping plates 43 to rotate synchronously and move out of the storage cavity 202. Some clamping plates 43 pass through the connecting groove 214 and enter the positioning groove 211. At this time, the remaining clamping plates 43 are retracted into the storage groove 213, so that the clamping plates 43 inside the storage groove 213 contact the side of the workpiece, thereby limiting one side of the workpiece. Then, the positioning structure 30 synchronously limits the side of the workpiece located inside the multiple storage grooves 213 that is adjacent to the clamping plate 43, thereby limiting the workpiece and preventing the workpiece from moving.

[0043] The working principle for simultaneously limiting both strip-shaped and round workpieces is as follows: A circular workpiece is placed inside the first positioning hole 212, which does not correspond to the connecting groove 214. A strip-shaped workpiece is placed inside the positioning groove 211, with one side of the strip-shaped workpiece against the inner wall of the positioning groove 211. At this time, the driving structure causes multiple rotating shafts 41 to rotate synchronously, thereby causing multiple clamping plates 43 to rotate synchronously and move out of the storage cavity 202. Some clamping plates 43 enter the space formed by the first positioning hole 212 and the second positioning hole 201. As the multiple clamping plates 43 rotate synchronously, the clamping plates 43 located in the space formed by the first positioning hole 212 and the second positioning hole 201 first contact the circular workpiece and make the workpiece adhere to the inner wall of the first positioning hole 212, thereby adjusting the circular workpiece. When the workpiece is positioned, the rotating shaft 41 continues to rotate as the drive structure drives it. The rotating shaft 41 connected to the clamping plate 43 that is in contact with the circular workpiece is in an idle state. Under the action of the one-way bearing 42, the clamping plate 43 will not rotate in the opposite direction. At this time, as the other clamping plates 43 rotate, the other clamping plates 43 will enter the interior of the receiving groove 213 through the connecting groove 214, so that the clamping plate 43 inside the receiving groove 213 contacts one side of the strip workpiece, thereby limiting one side of the strip workpiece. Then, the positioning structure 30 simultaneously limits the side of the strip workpiece located inside the multiple receiving grooves 213 that is adjacent to the clamping plate 43, thereby limiting the workpiece and preventing the workpiece from moving.

[0044] Whether limiting a strip-shaped workpiece or a round workpiece, once the clamping plate 43 comes into contact with the workpiece, the clamping plate 43 in contact with the workpiece will not continue to rotate or rotate in the opposite direction under the action of the one-way bearing 42. The clamping plate 43 in contact with the workpiece will continue to rotate, thereby limiting workpieces of different sizes.

[0045] like Figures 4 to 10 The drive structure includes an internal gear ring 44 rotatably disposed inside the receiving cavity 202. The outer surface of the internal gear ring 44 is in contact with the inner wall of the receiving cavity 202. Multiple drive gears 45 are meshed inside the internal gear ring 44. The number of drive gears 45 corresponds to the number of rotating shafts 41. The drive gears 45 are connected to the rotating shafts 41, and there is a one-to-one correspondence between the drive gears 45 and the rotating shafts 41. A torsion spring 46 is fixedly connected to one side of the drive gear 45. The end of the torsion spring 46 away from the drive gear 45 is connected to the clamping plate 43. A fixing component is provided between the internal gear ring 44 and the outer wheel 20. The fixing component is used to fix the internal gear ring 44 to fix the internal gear ring 44 in a specific position. The transmission ratio between each drive gear 45 and the internal gear ring 44 is the same.

[0046] like Figures 6 to 11The fixing component includes a limiting groove 203 formed on the outer wheel 20 and a limiting rod 47 connected to one side of the internal gear ring 44. The limiting groove 203 is arc-shaped, and its center is at the same position as the center of the outer wheel 20. The limiting rod 47 passes through the inside of the limiting groove 203, and its diameter is adapted to the width of the limiting groove 203. A limiting block 48 is fixedly connected to the outer surface of the limiting rod 47. The limiting block 48 is located inside the receiving cavity 202. The limiting block 48 and the receiving cavity 202 are... The inner wall of the outer wheel 20 is fitted together, and the outer surface of the limiting rod 47 is threaded with a fixing nut 49. A receiving groove is provided on one side of the outer wheel 20. The fixing nut 49 fits into the inner wall of the receiving groove. The thickness of the fixing nut 49 is less than the depth of the receiving groove. The receiving groove is connected to the limiting groove 203. The size of the receiving groove is larger than the size of the limiting groove 203 to avoid the end of the fixing nut 49 being outside the outer wheel 20 after the fixing nut 49 is installed, thereby ensuring the smooth progress of the subsequent grinding process.

[0047] When multiple clamping plates 43 are driven to move towards the workpiece, the rotation direction of the clamping plates 43 (i.e., the rotation direction of the rotating shaft 41) is the free rotation direction of the one-way bearing 42. At this time, with the rotation of the internal gear ring 44, multiple rotating shafts 41 rotate simultaneously under the transmission action of multiple drive gears 45. If the torsion spring 46 is not provided, the clamping plates 43 will not rotate with the rotation of the rotating shaft 41 due to the provision of the one-way bearing 42. Because the drive gears 45 and the clamping plates 43 are connected by the torsion spring 46, and the clamping plates 43 are not subjected to external force at this time, the connection of the torsion spring 46... Using the clamping mechanism will cause the clamping plate 43 to rotate. When the clamping plate 43 comes into contact with the workpiece, the workpiece's limiting effect prevents the clamping plate 43 from continuing to rotate. Furthermore, the reverse locking function of the one-way bearing 42 prevents the clamping plate 43 from rotating in the opposite direction, thus limiting the workpiece. If multiple workpieces of different sizes are clamped simultaneously, after one clamping plate 43 comes into contact with a workpiece, the rotating shaft 41 connected to that clamping plate 43 will continue to rotate freely under the action of the one-way bearing 42. This will not affect the rotation of other rotating shafts 41 and clamping plates 43, nor the limiting operation of the workpiece, ensuring the... The workpiece limiting operation of different sizes proceeds normally. When the clamping plate 43 contacts the workpiece, the torsion spring 46 will generate torque, thereby exerting a force on the clamping plate 43. After the workpiece grinding is completed, the internal gear ring 44 is rotated in the opposite direction, causing multiple rotating shafts 41 to rotate in the opposite direction. At this time, the rotation direction of the rotating shafts 41 is the locking direction of the one-way bearings 42, thereby causing multiple rotating shafts 41, multiple one-way bearings 42, and multiple clamping plates 43 to rotate in the opposite direction synchronously and reset. If the workpieces limited by the multiple clamping plates 43 are not the same size, the angle of rotation of the multiple clamping plates 43 during limiting will vary. The different forces result in different levels of force storage in the torsion spring 46. Consequently, when the multiple clamping plates 43 are reset, one or more clamping plates 43 will first come into contact with the inner wall of the receiving cavity 202. At this time, the internal gear ring 44 will no longer be able to rotate in the reverse direction. When the internal gear ring 44 can no longer rotate, the limiting rod 47 no longer applies force to the internal gear ring 44, thereby causing the rotating shaft 41 to stop rotating. At this time, under the action of the torsion spring 46, the clamping plates 43 will rotate in the direction of free rotation of the one-way bearing 42, thereby resetting the clamping plates 43. The above steps are repeated until all the clamping plates 43 are reset.

[0048] When the internal gear ring 44 rotates, the limiting rod 47 fixed to it slides synchronously along the arc-shaped limiting groove 203. Because the center of the limiting groove 203 coincides with the center of the outer wheel 20, and the diameter of the limiting rod 47 matches the width of the limiting groove 203, it ensures that the internal gear ring 44 always rotates around the central axis of the outer wheel 20, preventing deviation. When the internal gear ring 44 reaches the preset fixed position, the fixing nut 49 at the protruding end of the limiting rod 47 is turned, causing the fixing nut 49 to move along the thread of the limiting rod 47 towards the outer wheel 20 until the fixing nut 47... 9 is tightly pressed against the inner wall of the storage groove 1, generating a clamping force, thereby fixing the limiting rod 47 and preventing the positions of the limiting rod 47 and the internal gear ring 44 from moving. When it is necessary to loosen the workpiece or adjust the position of the internal gear ring 44, the fixing nut 49 is turned in the opposite direction to separate the fixing nut 49 from the inner wall of the storage groove 1, releasing the clamping force on the limiting rod 47. At this time, the static friction between the limiting block 48 and the inner wall of the storage cavity 202 disappears, and the limiting rod 47 can be pushed to slide along the limiting groove 203, driving the internal gear ring 44 to rotate, thereby realizing the loosening or position adjustment of the clamping plate 43.

[0049] It should be noted that the drive gear 45 and the clamping plate 43 are staggered along the thickness direction of the outer wheel 20. They are located on different axial levels. An installation groove is provided on the clamping plate 43. The end of the torsion spring 46 away from the drive gear 45 is installed inside the installation groove so that the torsion spring 46 has sufficient installation space. In the initial state, the torsion spring 46 will not block the positioning hole 201.

[0050] like Figures 11 to 14 The positioning structure 30 includes a turntable 31 rotatably positioned at the center of the inner disc 21. The surface of the turntable 31 is on the same plane as the surface of the inner disc 21, and a receiving hole is provided on one side of the turntable 31. Multiple arc-shaped guide grooves 311 are evenly distributed on the inner wall of the receiving hole. A positioning locking rod 32 is slidably disposed on the inner wall of each arc-shaped guide groove 311. The diameter of the positioning locking rod 32 is adapted to the width of the arc-shaped guide groove 311. A positioning clamping plate 33 is fixedly connected to the end of each positioning locking rod 32 on one side of the inner disc 21. Multiple positioning grooves 215 are evenly provided. The positioning grooves 215 are located below the turntable 31 and are connected to the positioning slots 211. The positioning grooves 215 and the positioning slots 211 correspond one-to-one. The positioning clamps 33 are located inside the positioning grooves 215 and are slidably connected to the positioning grooves 215. The positioning clamps 33 and the positioning grooves 215 correspond one-to-one. The outer surface of each positioning locking rod 32 is threaded with a positioning nut 34. The positioning nut 34 is located inside the receiving hole, and the thickness of the positioning nut 34 is less than the depth of the receiving hole.

[0051] When the strip-shaped workpiece is placed in the positioning groove 211 and one side is limited by the clamping plate 43, the turntable 31 is rotated. Since the positioning locking rod 32 is slidably embedded in the arc-shaped guide groove 311 of the turntable 31, the turntable will generate a circumferential guiding force on the positioning locking rod 32 through the arc-shaped guide groove 311 when it rotates. This will drive multiple positioning locking rods 32 to slide synchronously along the arc-shaped guide groove 311. When the positioning locking rod 32 moves, it will pull the positioning clamping plate 33 at the end to move along the positioning slide 215 towards the workpiece. Since the positioning slide 215 is connected to the positioning groove 211, the positioning clamping plate 33 can be smoothly extended into the positioning groove 211 until it is tightly fitted with the side of the workpiece away from the clamping plate 43, thereby limiting the other side of the workpiece and forming a two-way clamping and positioning with the clamping plate 43.

[0052] like Figures 2 to 4 and Figures 11 to 13 The clamping assembly includes multiple clamping grooves 204 formed on one side of the outer wheel 20 and multiple clamping plates 22 connected to the outer surface of the inner wheel 21. The number of clamping plates 22 corresponds to the number of clamping grooves 204. The clamping plates 22 are inserted into the interior of the clamping grooves 204. The clamping plates 22 and the clamping grooves 204 correspond one-to-one. The sizes of the clamping plates 22 and the clamping grooves 204 are similar.

[0053] When it is necessary to install the inner wheel 21 to adapt to the processing of small-diameter circular or strip-shaped workpieces, align the inner wheel 21 with the inner cavity of the outer wheel 20, adjust the position of the inner wheel 21 so that each clamping plate 22 on the outer surface of the inner wheel 21 is aligned with the corresponding clamping groove 204 on the outer wheel 20, and then push the inner wheel 21 along the axial direction of the outer wheel 20 so that the clamping plate 22 is completely inserted into the clamping groove 204. Since the clamping plate 22 and the clamping groove 204 are size-matched, the two fit tightly after installation, which can effectively limit the radial displacement between the inner wheel 21 and the outer wheel 20 and prevent the inner wheel 21 from rotating eccentrically inside the outer wheel 20.

[0054] Meanwhile, in conjunction with the matching relationship between the outer diameter of the inner wheel 21 and the inner diameter of the outer wheel 20, the clamping assembly further enhances the circumferential positioning effect of the two, making the outer wheel 20 and the inner wheel 21 form an integral structure. During the machine tool operation, the planetary wheel structure rotating with the lower grinding disc 11, and the workpiece grinding process, they always maintain synchronous movement, avoiding workpiece positioning deviation and grinding accuracy reduction due to relative displacement between the two. When it is necessary to disassemble the inner wheel 21 to adapt to the processing of large-diameter circular workpieces, the inner wheel 21 is pulled out in the reverse direction along the axial direction, so that the clamping plate 22 is disengaged from the clamping groove 204, and the disassembly of the inner wheel 21 can be completed. The operation is convenient and the connection is stable.

[0055] like Figures 15 to 18The system also includes a mounting cover 50, which has a lever pressure structure inside. The lever pressure structure is connected to the upper grinding disc 12 and is used to apply pressure to the workpiece by the upper grinding disc 12 to grind the workpiece. The lever pressure structure includes a force-applying member 51 installed inside the mounting cover 50. A lever 52 is connected to the force-applying member 51 and is rotatably connected to the mounting cover 50. A pull rod 53 is hinged to the end of the lever 52 away from the force-applying member 51. A lifting slide 54 is hinged to the end of the pull rod 53. A telescopic member 55 is installed on the lifting slide 54. A mounting base 56 is connected to the output end of the telescopic member 55. A drive member 57 is fixedly installed on one side of the mounting base 56. The output shaft of the drive member 57 is connected to the upper grinding disc 12 and is used to drive the upper grinding disc 12 to rotate. A guide structure is provided on the mounting cover 50 and is connected to the lifting slide 54. The guide structure is used to guide the lifting slide 54 so that the lifting slide 54 moves linearly up and down.

[0056] The force-applying component 51 is a structure with telescopic function, such as a hydraulic cylinder, or an airbag. After the workpiece is limited by the synchronous clamping structure 40 and the positioning structure 30, the lever pressure structure is activated to perform the grinding operation. First, the force-applying component 51 is activated, and it performs telescopic movement, applying a push / pull force to one end of the lever 52. Since the lever 52 is rotatably connected to the mounting cover 50, according to the lever principle, the lever 52 rotates around the hinge point with the mounting cover 50 under the force of the force-applying component 51. The other end of the lever 52 transmits the force to the lifting slide 54 through the hinged pull rod 53, causing the lifting slide 54 to move up and down linearly along the guide structure inside the mounting cover 50, thereby adjusting the height of the upper grinding disc 12. The lifting slide 54 drives the telescopic component 55, the mounting base 56, the drive component 57, and the upper... The grinding disc 12 moves down synchronously. When the upper grinding disc 12 approaches the upper surface of the workpiece, the distance between the upper grinding disc 12 and the workpiece can be precisely adjusted by the extension and retraction of the force-applying component 51 or the auxiliary extension and retraction of the extension component 55, so that the upper grinding disc 12 contacts the upper surface of the workpiece and applies a preset pressure. The force-applying component 51, through the force amplification effect of the lever structure, can achieve a large pressure force with a small input force, ensuring the stability and controllability of the grinding pressure. After the pressure is adjusted to the appropriate level, the drive component 57 is started. The output shaft of the drive component 57 drives the upper grinding disc 12 to rotate. At the same time, the lower grinding disc 11 drives the planetary wheel structure and the workpiece that has been limited to rotate. Under the continuous and stable pressure, the upper grinding disc 12 contacts and rotates with the upper surface of the workpiece, and the lower grinding disc 11 contacts and rotates with the lower surface of the workpiece, realizing synchronous grinding of both ends of the workpiece.

[0057] The mounting cover 50 is equipped with two grating rulers and a control unit (not shown in the figure). The grating rulers are electrically connected to the control unit, and the control unit is electrically connected to the force application component 51 and the telescopic component 55. One grating ruler corresponds to the connection point between the lever 52 and the pull rod 53, and is used to monitor the pressure applied by the lever to the telescopic component 55 and provide feedback to the force application component 51. The other grating ruler corresponds to the position of the upper grinding disc 12, and is used to monitor the pressure applied to the material and provide feedback to control the telescopic component 55 to achieve high-precision pressure application. For example, to apply a pressure of 101 tons, one grating ruler controls the force application component 51 to apply 100 tons of pressure using the lever, and the other grating ruler controls the telescopic component 55 to apply 1 ton of force.

[0058] The guide structure includes a guide rail 58 installed inside the mounting cover 50 and a guide rail slide 59 connected to the mounting base 56. The length direction of the guide rail 58 is parallel to the height direction of the mounting cover 50, and the guide rail slide 59 is slidably connected to the guide rail 58.

[0059] like Figures 15 to 18 The bottom of the mounting cover 50 is connected to a support base 510, and the top of the support base 510 is connected to a grinding disc base 511. Multiple external toothed columns 512 are mounted in a circular array inside the grinding disc base 511. A through hole is opened in the middle of one side of the grinding disc base 511. A toothed column mounting plate 513 is rotatably arranged inside the through hole. Multiple internal toothed columns 514 are arranged in a circular array on the top side of the toothed column mounting plate 513. The outer wheel 20 meshes with the external toothed columns 512 and the internal toothed columns 514. The lower grinding disc 11 is arranged inside the grinding disc base 511, and a second driving component 515 is arranged on the support base 510. The output end of the second driving component 515 is connected to the toothed column mounting plate 513.

[0060] After the workpiece is positioned and placed on the grinding disc base 511 of the lower grinding disc 11, the drive component 515 on the support base 510 is activated. The output shaft of the drive component 515 drives the toothed column mounting disc 513, which is fixedly connected to it, to rotate around the central axis of the grinding disc base 511. When the toothed column mounting disc 513 rotates, the multiple internal toothed columns 514 on its top side move in a circular motion synchronously with the toothed column mounting disc 513. Since the outer wheel 20 meshes with the outer toothed column 512 inside the grinding disc base 511 and the internal toothed column 514 on the toothed column mounting disc 513, the outer toothed column 512 is a fixed meshing structure on the grinding disc base 511, and the internal toothed column 514... The toothed column 514 is a movable meshing structure that rotates around a central axis. Under the meshing transmission of the two, the outer wheel 20 will generate two motions simultaneously: one is to revolve around the central axis of the grinding disc base 511 with the circumferential motion of the inner toothed column 514; the other is to rotate around its own central axis under the meshing force of the outer toothed column 512 and the inner toothed column 514, thereby driving the workpiece that has completed the limit on the inner wheel 21 to perform a compound rotational motion synchronously. At this time, the two end faces of the workpiece are simultaneously ground by the lower grinding disc 11 and the upper grinding disc 12. Since its working principle is an existing mature technology, it will not be described in detail.

[0061] It should be noted that the workpieces mentioned above, whether round or strip-shaped, are all workpieces with a relatively large thickness in the background art, and the thickness of the workpieces is generally 30mm-50mm.

[0062] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A double-end face grinding machine tool with a lever-applying structure, comprising a lower grinding disc (11), characterized in that, Also includes: At least one outer wheel (20) is set on the lower grinding disc (11), and the inner surface of the outer wheel (20) is uniformly provided with a receiving cavity (202) and multiple positioning holes (201). The inner wheel (21) is located inside the outer wheel (20). Multiple positioning grooves (211) are provided on one side of the inner wheel (21). Multiple positioning holes (212), multiple storage grooves (213) and multiple connecting grooves (214) are evenly provided on the outer surface of the inner wheel (21). The connecting grooves (214) correspond to the positions of the positioning grooves (211) and are connected to the positioning grooves (211). Multiple positioning structures (30) are provided on the inner wheel (21). The positioning structures (30) are used to position the workpiece located inside the positioning groove (211). Multiple rotating shafts (41) are rotatably arranged inside the storage cavity (202). Each rotating shaft (41) has a one-way bearing (42) connected to its outer surface, and each one-way bearing (42) has a clamping plate (43) connected to its outer surface. The drive structure is set inside the storage cavity (202). The drive structure is used to drive multiple rotating shafts (41) to rotate synchronously. The drive structure includes multiple torsion springs (46). One end of the torsion spring (46) is connected to the clamping plate (43). The torsion spring (46) and the clamping plate (43) correspond one-to-one. A clamping assembly is disposed between the outer wheel (20) and the inner wheel (21), and the clamping assembly is used to connect the outer wheel (20) and the inner wheel (21).

2. The double-end face grinding machine tool with a lever-applying structure according to claim 1, characterized in that, The drive structure also includes an internal gear ring (44), a drive gear (45), and a fixing component. The internal gear ring (44) is rotatably disposed inside the receiving cavity (202). There are multiple drive gears (45), and all drive gears (45) mesh with the internal gear ring (44). The drive gears (45) are connected to the rotating shaft (41), and the drive gears (45) correspond one-to-one with the rotating shaft (41). The end of the torsion spring (46) away from the clamping plate (43) is connected to the drive gear (45), and the torsion spring (46) corresponds one-to-one with the clamping plate (43). There is at least one fixing component, which is disposed between the internal gear ring (44) and the outer wheel (20). The fixing component is used to fix the internal gear ring (44).

3. The double-end face grinding machine tool with a lever-applying structure according to claim 2, characterized in that, The fixing assembly includes a limiting rod (47), a limiting block (48), and a fixing nut (49). One end of the limiting rod (47) is connected to the side of the internal gear ring (44). A limiting groove (203) communicating with the storage cavity (202) is provided on one side of the outer wheel (20). The limiting groove (203) is arc-shaped, and the center of the limiting groove (203) is the same as the center of the outer wheel (20). The limiting rod (47) passes through the inside of the limiting groove (203). The diameter of the limiting rod (47) is adapted to the width of the limiting groove (203). The limiting block (48) is located inside the storage cavity (202) and is installed on the outer surface of the limiting rod (47). The fixing nut (49) is threaded onto the outer surface of the limiting rod (47).

4. A double-end face grinding machine tool with a lever-applying structure according to claim 1, characterized in that, The positioning structure (30) includes a turntable (31), positioning locking rods (32), positioning clamps (33), and positioning nuts (34). The turntable (31) is rotatably positioned at the center of the inner wheel (21), and the surface of the turntable (31) is on the same plane as the surface of the inner wheel (21). A receiving hole is provided on one side of the turntable (31), and multiple arc-shaped guide grooves (311) are evenly provided on the inner wall of the receiving hole. There are multiple positioning locking rods (32), and the number of positioning locking rods (32) corresponds to the number of arc-shaped guide grooves (311). The positioning locking rods (32) are positioned from the arc-shaped guide grooves (311) (32) and the positioning locking rods (33) are positioned from the arc-shaped guide grooves (34). The inner wheel (21) passes through the interior of the inner wheel (21), and the positioning locking rod (32) corresponds one-to-one with the arc-shaped guide groove (311). The end of each positioning locking rod (32) is fixedly connected with a positioning clamp (33). The outer surface of each positioning locking rod (32) is threaded with a positioning nut (34). Multiple positioning grooves (215) are evenly opened on one side of the inner wheel (21). The positioning grooves (215) are connected to the positioning grooves (211). The positioning grooves (215) and the positioning grooves (211) correspond one-to-one. The positioning clamp (33) is located inside the positioning grooves (215) and is slidably connected to the positioning grooves (215).

5. A double-end face grinding machine tool with a lever-applying structure according to claim 1, characterized in that, The clamping assembly includes a clamping plate (22) and a clamping groove (204). There are multiple clamping grooves (204) and clamping plates (22). The number of clamping plates (22) is the same as the number of clamping grooves (204). The clamping plate (22) is connected to the outer surface of the inner wheel (21). The clamping groove (204) is opened on one side of the outer wheel (20). The clamping plate (22) is inserted into the interior of the clamping groove (204).

6. A double-end face grinding machine tool with a lever-applying structure according to claim 1, characterized in that, It also includes a mounting cover (50), inside which is provided an upper grinding disc (12), the upper grinding disc (12) and the lower grinding disc (11) are positioned correspondingly. Inside the mounting cover (50) is provided a lever pressure structure, which is connected to the upper grinding disc (12). The lever pressure structure is used to make the upper grinding disc (12) apply pressure to the workpiece.

7. A double-end face grinding machine tool with a lever-applying structure according to claim 6, characterized in that, The lever pressure structure includes a force-applying component (51), a lever (52), a pull rod (53), a lifting slide (54), a telescopic component (55), a mounting base (56), and a drive component (57). The force-applying component (51) is installed inside the mounting cover (50). One end of the lever (52) is connected to the force-applying component (51), and the other end of the lever (52) is hinged to the pull rod (53). The lever (52) is rotatably mounted inside the mounting cover (50). The lifting slide (54) is hinged to the end of the pull rod (53). The telescopic component (55) is installed on one side of the lifting slide (54). The output end of the telescopic component (55) is connected to the mounting base (56). The drive component (57) is installed on one side of the mounting base (56). The output shaft of the drive component (57) is connected to the upper grinding disc (12). The drive component (57) is used to drive the upper grinding disc (12) to rotate.

8. A double-end face grinding machine tool with a lever-applying structure according to claim 6, characterized in that, The bottom of the mounting cover (50) is connected to a support base (510), and the top of the support base (510) is connected to a grinding disc base (511). Multiple external toothed columns (512) are installed in a circular array inside the grinding disc base (511). A through hole is opened in the middle of one side of the grinding disc base (511), and a toothed column mounting plate (513) is rotatably arranged inside the through hole. Multiple internal toothed columns (514) are arranged in a circular array on the top side of the toothed column mounting plate (513). The outer wheel (20) meshes with the external toothed columns (512) and the internal toothed columns (514). The lower grinding disc (11) is arranged inside the grinding disc base (511), and a second driving component (515) is arranged on the support base (510). The output end of the second driving component (515) is connected to the toothed column mounting plate (513).

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