Powder metallurgy gear polishing device and polishing method thereof

Abstract

The application relates to a powder metallurgy gear polishing device and a polishing method thereof, and relates to the technical field of gear machining. The device comprises a workbench and a support fixedly arranged on the workbench. A support rod is horizontally fixedly arranged on the side wall of the support. A rotating rod is rotationally arranged on the end wall of the support rod. A first key block matched with a gear is arranged on the support rod. A second key block matched with the gear is arranged on the rotating rod. An abutting block is slidably arranged on the support rod. A sliding assembly is arranged on the support rod. A rotating assembly is arranged on the support. A polishing table is also slidably arranged on the workbench. A translation assembly is arranged on the workbench. A polishing roller and a polishing assembly are arranged on the polishing table. The application has the effects of reducing human labor, improving the automation degree and production efficiency of the device, and facilitating batch polishing of multiple gears.

Description

Technical Field

[0001] This application relates to the technical field of gear processing, and in particular to a powder metallurgy gear grinding device and grinding method. Background Technology

[0002] Currently, gears refer to mechanical components with continuously meshing gears on their rims that transmit motion and power. Grinding is a type of surface modification technology, generally referring to a processing method that uses rough objects (such as sandpaper containing high-hardness particles) to change the physical properties of a material surface through friction. Gear grinding equipment refers to a device that grinds the surface of gears to a smooth and flat surface.

[0003] Most gear grinding devices designed in related technologies use clamping components to hold and fix the gears, and then use a grinding wheel to grind the surface of the gears. During operation, it is necessary to manually install and fix the gears to the clamping components, and then operate the grinding wheel to move closer to or away from the gears in order to achieve the grinding treatment of the surface of a single gear.

[0004] The aforementioned technologies can only grind one gear at a time. When multiple gears need to be ground in batches, manual installation and removal of gears are required, which consumes a lot of manual labor. The automation level of the equipment is not high, the production efficiency is low, and it is not convenient to grind multiple gears. Therefore, improvements are needed. Summary of the Invention

[0005] The purpose of this application is to provide a powder metallurgy gear grinding device and grinding method, which has the effects of reducing manual labor, improving the automation level and production efficiency of the device, and facilitating the batch grinding of multiple gears.

[0006] The powder metallurgy gear grinding device provided in this application adopts the following technical solution: A powder metallurgy gear grinding device includes a worktable and a bracket fixedly mounted on the worktable. A support rod for gear mounting is horizontally fixed to the side wall of the bracket, and a rotating rod is rotatably mounted on the end wall of the support rod. A first key block adapted to the gear is mounted on the support rod, and a second key block adapted to the gear is mounted on the rotating rod. An abutment block is slidably mounted on the support rod, and a sliding assembly is mounted on the support rod to drive the abutment block to slide along the length of the support rod. A rotating assembly is mounted on the bracket to drive the rotating rod to rotate on the end wall of the support rod. A grinding table is also slidably mounted on the worktable, and a translational assembly is mounted on the worktable to drive the grinding table closer to or away from the rotating rod. A grinding roller and a grinding assembly are mounted on the grinding table, and the grinding assembly drives the grinding roller to rotate and slide. A recycling trough is located on the worktable below the rotating rod.

[0007] By adopting the above technical solution, when grinding multiple gears in batches, the grinding table is first driven away from the rotating rod using a translation component. At this time, the first key block and the second key block are aligned with each other. The operator slides the gear onto the rotating rod, and then slides the gear onto the support rod. In this way, multiple gears can be arranged sequentially on the support rod, and the abutment block abuts against the gear furthest from the rotating rod. When grinding is required, the sliding component drives the abutment block to slide on the support rod. The abutment block abuts against the gear, causing one of the gears to slide onto the rotating rod. Then, the translation component moves the grinding table closer to the rotating rod, thereby causing the grinding roller on the grinding table to abut against the gear on the rotating rod. The grinding component then drives the grinding roller to rotate. Simultaneously, the sliding component drives the rotating rod to rotate on the end wall of the support rod, allowing the grinding roller to grind different positions on the gear surface. After grinding, the translation component drives the grinding table away from the rotating rod, and the rotating component drives the rotating rod to rotate so that the first key block and the second key block are aligned. The sliding component then drives the abutment block to slide and abut against the gear. Under the action of the abutment force, the processed gear on the rotating rod will fall into the recycling tank. At the same time, the abutment block drives a new gear to slide onto the rotating rod for grinding. The entire processing process only requires the operator to put the gears on the support rod one by one, and the equipment can grind the gears on the support rod one by one. The entire process does not require manual operation, reducing manual labor and improving the automation level and production efficiency of the device.

[0008] Optionally, the sliding assembly includes a first motor and a lead screw. A sliding groove is provided through the surface of the support rod. The abutment block passes through the sliding groove and is adapted to the sliding groove. The first motor is fixedly mounted on the bracket. The lead screw is rotatably mounted in the sliding groove. The drive shaft of the first motor extends into the sliding groove and is connected to the lead screw. The lead screw and the abutment block are threadedly connected.

[0009] By adopting the above technical solution, when it is necessary to slide the abutment block on the support rod to drive the gear to slide onto the rotating rod, the first motor drives the lead screw to rotate. At this time, the abutment block is guided by the sliding groove. The abutment block can slide along the length of the sliding groove on the surface of the lead screw. While the abutment block slides in the sliding groove, it can abut against the gear on the support rod, thereby driving the gear to slide onto the rotating rod in sequence for processing.

[0010] Optionally, the rotating assembly includes a second motor, a rotating rack, and a rotating gear. The rotating rack is fixedly mounted on the end wall of the rotating rod, and a rotating groove for inserting the rotating rack is provided on the end wall of the support rod. The second motor is fixedly mounted in the rotating groove, and the rotating gear is connected to the drive shaft of the second motor. The rotating rack and the rotating gear mesh with each other.

[0011] By adopting the above technical solution, when grinding the gear on the rotating rod, the grinding roller and the surface of the gear come into contact with each other. At this time, the second motor drives the rotating gear to rotate, and the rotating gear abuts against the rotating rack, thereby driving the rotating rack to rotate in the rotating groove, and then driving the rotating rod to rotate on the end wall of the support rod, so as to facilitate grinding different positions on the surface of the gear on the rotating rod.

[0012] Optionally, a limiting groove is provided on the rotating rod, and a limiting block is slidably arranged in the limiting groove. The top end of the limiting block is provided with an arc-shaped surface. A spring is provided in the limiting groove, one end of the spring is fixed to the bottom wall of the limiting groove, and the other end of the spring abuts against and is fixed to the bottom end of the limiting block.

[0013] By adopting the above technical solution, when the gear on the support rod is abutted and slid onto the rotating rod by the abutting block, the limiting block can play a certain limiting role, improving the stability of the gear when rotating on the rotating rod and reducing the possibility of the gear falling off the rotating rod when it rotates. When the gear needs to pass through the rotating rod, the gear will be subjected to force and will abut against the arc-shaped surface on the limiting block, driving the limiting block to slide and retract into the limiting groove, so that the gear can pass through the rotating rod when subjected to force. After the gear passes through the limiting groove, the spring abuts against the limiting block and drives one end of the arc-shaped surface of the limiting block to protrude from the limiting groove. When the rotating rod rotates, the limiting block can play a limiting role for the gear.

[0014] Optionally, a light emitter is provided at the end of the first key block facing the direction of the rotating rod, and a light receiver is provided at the end of the second key block facing the direction of the support rod. The light receiver is connected to a controller, and the controller is connected to an alarm. The controller is used to control the alarm to sound when the light receiver does not receive a light signal emitted by the light emitter.

[0015] By adopting the above technical solution, after the gear is processed on the rotating rod, the rotating component needs to drive the rotating rod to rotate so that the second key block and the first key block are aligned with each other. At this time, the light emitter emits a laser. When the light receiver does not receive the light signal emitted by the light emitter, the controller determines that the second key block and the first key block are not aligned and controls the alarm to sound. Through the light emitter, light receiver and alarm, detection and calibration can be performed after the rotating rod is reset, reducing the possibility of damage to the device.

[0016] Optionally, the translation component includes a slide rail and a cylinder, both of which are mounted on the worktable. The grinding table is slidably mounted on the slide rail, and the piston rod of the cylinder is connected to the grinding table.

[0017] By adopting the above technical solution, when it is necessary to control the grinding roller to move closer to or further away from the rotating rod, the piston rod of the cylinder is extended or retracted to control the grinding table to slide on the slide rail, thereby driving the grinding roller on the grinding table to move on the worktable. The control is convenient and quick, and the cost is low.

[0018] Optionally, the grinding assembly includes a grinding frame, a third motor, a worm gear, a worm wheel, an eccentric wheel, a linkage rod, a linkage frame, a pin, a linkage ring, and a grinding rod. The third motor and the grinding frame are both mounted on the grinding table. The drive shaft of the third motor is connected to the worm gear. The worm wheel is rotatably mounted on the grinding frame and meshes with the worm gear. The eccentric wheel is fixedly mounted on the end wall of the worm wheel. The linkage frame is rotatably mounted on the grinding frame. One end of the linkage rod is hinged to the surface of the eccentric wheel, and the other end is hinged to the surface of the linkage frame. The linkage frame has symmetrically arranged slotted holes. The linkage ring rotates and slides between the slotted holes via a pin. The grinding rod slides on the grinding frame and rotates within the linkage ring. The grinding roller is fixedly mounted at the top of the grinding rod. The bottom end of the grinding rod has a linkage cavity for the worm gear insertion. The worm gear is connected to the inner wall of the linkage cavity via a key.

[0019] By adopting the above technical solution, when the grinding roller on the grinding table is driven by the cylinder to contact the surface of the gear on the rotating rod, the worm gear is driven to rotate by the third motor. Since the worm gear is connected to the inner wall of the linkage cavity by a key, when the worm gear rotates, it abuts against the inner wall of the linkage cavity, driving the grinding rod linkage ring inside. When the grinding rod rotates, it drives the grinding roller to rotate, so that the grinding roller can grind the surface of the gear. When the worm gear rotates, it also abuts against the worm wheel, driving the worm wheel to rotate. The worm wheel drives the eccentric wheel to rotate. When the eccentric wheel rotates, it pulls or pushes the linkage frame through the linkage rod, thereby driving the gear to rotate. The linkage frame swings up and down on the inner wall of the grinding frame. When the linkage frame swings, the linkage ring swings along with it. At the same time, the pin slides in the slotted hole. The swing of the linkage ring drives the grinding rod to slide back and forth in the vertical direction. In addition, the grinding roller will also slide back and forth in the vertical direction when it rotates. The grinding roller, which rotates and slides, grinds the surface of the gear, which helps to improve the grinding effect on the gear surface and further improves the grinding efficiency. At the same time, the rotation grinding and sliding grinding can be achieved simultaneously by a third motor, which is convenient and quick to control and has low cost.

[0020] Optionally, the inner wall of the linkage cavity is provided with an oil injection hole and an oil outlet hole.

[0021] By adopting the above technical solution, the lubricating oil is periodically replaced into the linkage cavity through the oil injection hole and oil outlet hole, which can reduce the wear between the worm and the inner wall of the linkage cavity and help extend the service life of the device.

[0022] Secondly, the grinding method of the powder metallurgy gear grinding device provided in this application adopts the following technical solution: The process includes the following steps: A translation component moves the grinding table away from the rotating rod, sequentially placing the gears to be ground onto the rotating rod and support rod. The gears are neatly arranged on the support rod. A sliding component moves the abutment block on the support rod, abutting the gears so that the gear closest to the rotating rod is abutted against the rotating rod. A rotating component rotates the rotating rod, and a translation component moves the grinding table closer to the rotating rod so that the grinding roller contacts the surface of the gears on the rotating rod. A grinding component moves the grinding roller to grind the gear surface. After grinding one gear, the abutment block slides, causing the gear on the rotating rod to fall off and pushing the gear on the support rod back onto the rotating rod to continue the process.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a worktable, bracket, support rod, rotating rod, first key block, second key block, abutment block, sliding assembly, rotating assembly, grinding table, translation assembly, grinding roller, grinding assembly, and recycling tank, the sliding assembly drives the abutment block to slide on the support rod. The abutment block abuts against the gear, causing one of the gears to slide onto the rotating rod. Then, the translation assembly causes the grinding roller to abut against the gear on the rotating rod. The grinding assembly drives the grinding roller to rotate and slide. At the same time, the rotating assembly drives the rotating rod to rotate on the end wall of the support rod. The grinding roller can grind different positions on the gear surface. The entire processing process only requires the operator to put the gears on the support rod one by one, and the equipment can grind the gears on the support rod one by one. The whole process does not require manual operation, reducing manual labor and improving the automation level and production efficiency of the device. 2. By setting a limiting groove, an arc-shaped surface and a spring, when the gear on the support rod is abutted and slid onto the rotating rod by the abutting block, the limiting block can play a certain limiting role, improve the stability of the gear when rotating on the rotating rod, and reduce the situation where the gear falls off the rotating rod when it rotates. 3. By setting up a grinding frame, a third motor, a worm gear, a worm wheel, an eccentric wheel, a linkage rod, a linkage frame, a pin, a linkage ring, a strip hole, a linkage cavity, and a grinding rod, when the grinding roller on the grinding table is driven by the cylinder to contact the surface of the gear on the rotating rod, the grinding roller, driven by the third motor, will also slide back and forth in the vertical direction while rotating. The rotating and sliding grinding roller polishes the surface of the gear, which helps to improve the polishing effect on the gear surface and further improves the polishing efficiency. At the same time, only one third motor is needed to realize both rotational polishing and sliding polishing, which is convenient and quick to control and has low cost. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a powder metallurgy gear grinding device provided in an embodiment of this application; Figure 2This is a cross-sectional view used to illustrate the connection relationship between the support rod and the rotating rod in the embodiments of this application; Figure 3 This is a schematic diagram illustrating the polishing components in the embodiments of this application; Figure 4 This is a cross-sectional view used to illustrate the grinding components in the embodiments of this application; In the diagram, 1. Workbench; 11. Support; 12. Support rod; 121. Abutment block; 122. Sliding groove; 123. Rotating groove; 13. Rotating rod; 14. Grinding table; 141. Grinding roller; 15. Recycling trough; 21. First key block; 22. Second key block; 3. Sliding assembly; 31. First motor; 32. Lead screw; 4. Rotating assembly; 41. Second motor; 42. Rotating rack; 43. Rotating gear; 5. Translation. Components; 51. Slide rail; 52. Cylinder; 6. Grinding assembly; 61. Grinding frame; 62. Third motor; 63. Worm gear; 64. Worm wheel; 65. Eccentric wheel; 66. Linkage rod; 67. Linkage frame; 670. Strip hole; 68. Pin; 69. Linkage ring; 60. Grinding rod; 601. Linkage cavity; 7. Limiting groove; 71. Limiting block; 711. Arc surface; 72. Spring; 81. Oil injection hole; 82. Oil outlet hole. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail below.

[0026] This application discloses a powder metallurgy gear grinding device, referring to... Figure 1 and Figure 2The system includes a worktable 1 and a bracket 11 fixedly mounted on the worktable 1. The bracket 11 is vertically oriented, and a support rod 12 for gear mounting is horizontally fixed to the side wall of the bracket 11. The length of the support rod 12 is horizontal. A rotating rod 13 is rotatably mounted on the end wall of the support rod 12, coaxially arranged with the support rod 12, and the surfaces of the support rod 12 and the rotating rod 13 are parallel to each other. A first key block 21 adapted to the gear is provided on the support rod 12, and a second key block 22 adapted to the gear is provided on the rotating rod 13. The lengths of both the first key block 21 and the second key block 22 are along the length of the support rod 12. An abutment block 121 is slidably mounted on the support rod 12, a sliding assembly 3 is provided on the support rod 12, and a rotating assembly 4 is provided on the bracket 11. Before grinding multiple gears in batches, the first key block 21 and the second key block 22 are aligned with each other. The operator slides multiple gears onto the rotating rod 13 in sequence, and then slides the gears onto the support rod 12. In this way, multiple gears can be arranged in sequence on the support rod 12, and the abutment block 121 abuts against the gear furthest from the rotating rod 13. When the gears need to be ground, the sliding component 3 drives the abutment block 121 to slide on the support rod 12. The abutment block 121 can abut against the gear and drive one of the gears to slide onto the rotating rod 13.

[0027] Reference Figure 1 and Figure 2 A grinding table 14 is slidably mounted on the worktable 1. The grinding table 14 is equipped with a grinding roller 141 and a grinding assembly 6. A translation assembly 5 is provided on the worktable 1 to drive the grinding table 14 closer to or away from the rotating rod 13. A recovery trough 15 is provided on the worktable 1 and below the rotating rod 13. During grinding, the translation assembly 5 moves the grinding table 14 closer to the rotating rod 13, thereby causing the grinding roller 141 on the grinding table 14 to abut against the gear on the rotating rod 13. The grinding assembly 6 drives the grinding roller 141 to rotate and slide. At the same time, the rotating assembly 4 drives the rotating rod 13 to rotate on the end wall of the support rod 12. The grinding roller 141 can grind different positions on the surface of the gear. After grinding, the translation component 5 drives the grinding table 14 away from the rotating rod 13, and the rotating component 4 drives the rotating rod 13 to rotate so that the first key block 21 and the second key block 22 are aligned with each other. The sliding component 3 then drives the abutment block 121 to slide and abut against the gear. Under the action of the abutment force, the gear that has been processed on the rotating rod 13 will fall into the recycling tank 15. At the same time, the abutment block 121 drives a new gear to slide onto the rotating rod 13 for grinding.

[0028] Reference Figure 1 and Figure 2The sliding assembly 3 includes a first motor 31 and a lead screw 32. A sliding groove 122 is provided through the surface of the support rod 12, and the length direction of the sliding groove 122 is arranged along the length direction of the support rod 12. The abutment block 121 passes through the sliding groove 122 and is adapted to the sliding groove 122. The first motor 31 is fixedly mounted on the bracket 11 by bolts. The lead screw 32 is rotatably mounted in the sliding groove 122. The drive shaft of the first motor 31 extends into the sliding groove 122 and is connected to the lead screw 32. The lead screw 32 and the abutment block 121 are threadedly connected. When it is necessary to control the sliding of the abutment block 121 on the support rod 12 to drive the gear to slide onto the rotating rod 13, the first motor 31 drives the lead screw 32 to rotate. At this time, the abutment block 121 is guided by the sliding groove 122. The abutment block 121 can slide along the length of the support rod 12 in the sliding groove 122. At the same time, the abutment block 121 abuts against the gear on the support rod 12, thereby driving the gear to slide onto the rotating rod 13 for processing.

[0029] Reference Figure 1 and Figure 2 The rotating assembly 4 includes a second motor 41, a rotating rack 42, and a rotating gear 43. The rotating rack 42 is fixedly mounted at one end of the rotating rod 13 facing the support rod 12, and is coaxial with the rotating rod 13. A rotating groove 123 is provided on the end wall of the support rod 12 for the rotating rack 42 to insert into, and the rotating groove 123 is adapted to the rotating rack 42. The second motor 41 is fixedly mounted in the rotating groove 123, and the rotating gear 43 is connected to the drive shaft of the second motor 41, with the rotating rack 42 and the rotating gear 43 meshing with each other. When grinding the gear on the rotating rod 13, the grinding roller 141 contacts the surface of the gear. At this time, the second motor 41 drives the rotating gear 43 to rotate, and the rotating gear 43 abuts against the rotating rack 42, thereby driving the rotating rack 42 to rotate in the rotating groove 123, and thus driving the rotating rod 13 to rotate on the end wall of the support rod 12, so as to facilitate grinding different positions on the surface of the gear on the rotating rod 13.

[0030] Reference Figure 2A limiting groove 7 is provided on the rotating rod 13, and a limiting block 71 is slidably disposed within the limiting groove 7. The limiting block 71 and the limiting groove 7 are mutually adapted to each other, and the top of the limiting block 71 is provided with an arc-shaped surface 711. A spring 72 is provided within the limiting groove 7. One end of the spring 72 is fixed to the bottom wall of the limiting groove 7, and the other end of the spring 72 abuts against and is fixed to the bottom end of the limiting block 71. When the gear is on the rotating rod 13, the rotation of the rotating rod 13 drives the gear to rotate through the second key block 22. The limiting block 71 can play a certain limiting role for the gear, improving the stability of the gear when rotating on the rotating rod 13 and reducing the possibility of the gear falling off the rotating rod 13 when it rotates. When the gear needs to pass through the rotating rod 13, the gear will be subjected to force and will abut against the arc-shaped surface 711 on the limiting block 71, causing the limiting block 71 to slide and retract into the limiting groove 7, so that the gear can pass through the rotating rod 13 when the gear is subjected to force; and after the gear passes through the limiting groove 7, the spring 72 abuts against the limiting block 71, causing one end of the arc-shaped surface 711 of the limiting block 71 to protrude out of the limiting groove 7, and automatically reset the position of the limiting block 71.

[0031] Reference Figure 1 A light emitter is mounted on the end of the first key block 21 facing the rotating rod 13, and a light receiver is mounted on the end of the second key block 22 facing the support rod 12. The light receiver is connected to a controller. After the gears are machined on the rotating rod 13, the rotating assembly 4 needs to drive the rotating rod 13 to rotate so that the second key block 22 and the first key block 21 are aligned. At this time, the light emitter emits a laser. If the light receiver does not receive the light signal emitted by the light emitter, the controller determines that the second key block 22 and the first key block 21 are not aligned and controls the alarm to sound. Through the light emitter, light receiver and alarm, detection and calibration can be performed after the rotating rod 13 is reset, reducing the possibility of damage to the device.

[0032] Reference Figure 1 The translation component 5 includes a slide rail 51 and a cylinder 52. Both the slide rail 51 and the cylinder 52 are fixedly mounted on the worktable 1. The grinding table 14 is slidably mounted on the slide rail 51. The piston rod of the cylinder 52 is connected to the grinding table 14. When it is necessary to control the grinding roller 141 to move closer to or further away from the rotating rod 13, the piston rod of the cylinder 52 extends or retracts, controlling the grinding table 14 to slide on the slide rail 51, thereby driving the grinding roller 141 on the grinding table 14 to move on the worktable 1. The control is convenient and quick.

[0033] Reference Figure 3 and Figure 4The grinding assembly 6 includes a grinding frame 61, a third motor 62, a worm gear 63, a worm wheel 64, an eccentric wheel 65, a linkage rod 66, a linkage frame 67, a pin 68, a linkage ring 69, and a grinding rod 60. The third motor 62 and the grinding frame 61 are both fixedly mounted on the grinding table 14. The drive shaft of the third motor 62 is connected to the worm gear 63, which is arranged vertically along its length. The worm wheel 64 is rotatably mounted on the inner wall of the grinding frame 61 and meshes with the worm gear 63. The eccentric wheel 65 is fixedly mounted on the end wall of the worm wheel 64, and the eccentric wheel 65 and the worm wheel 64 are coaxially arranged. The linkage frame 67 is rotatably mounted on the grinding frame 61. One end of the linkage rod 66 is rotatably connected to the eccentric wheel 65, and the other end of the linkage rod 66 is hinged to the surface of the linkage frame 67. The grinding rod 60 is slidably mounted on the grinding frame 61 and rotatably mounted within the linkage ring 69. The length direction of the grinding rod 60 is parallel to the length direction of the worm gear 63. The grinding roller 141 is fixedly mounted on the top of the grinding rod 60. The bottom end of the grinding rod 60 has a linkage cavity 601 through which the worm gear 63 is inserted. The worm gear 63 is connected to the inner wall of the linkage cavity 601 by a key. When the grinding roller 141 on the grinding table 14 is driven by the cylinder 52 to contact the gear surface on the rotating rod 13, the worm gear 63 is driven to rotate by the third motor 62. Since the worm gear 63 is connected to the inner wall of the linkage cavity 601 by a key, the worm gear 63 will abut against the inner wall of the linkage cavity 601 when it rotates, driving the grinding rod 60 within the linkage ring 69. When the grinding rod 60 rotates, it drives the grinding roller 141 to rotate, so that the grinding roller 141 can grind the gear surface.

[0034] Reference Figure 3 and Figure 4 When the worm 63 rotates, it also abuts against the worm wheel 64, causing the worm wheel 64 to rotate. The worm wheel 64 drives the eccentric wheel 65 to rotate. When the eccentric wheel 65 rotates, it pulls or pushes the linkage frame 67 through the linkage rod 66, thereby causing the linkage frame 67 to swing up and down on the inner wall of the grinding frame 61. When the linkage frame 67 swings, the linkage ring 69 swings along with it. At the same time, the pin 68 slides along the length of the slot 670 in the slot 670. Since the grinding rod 60 is rotatably set in the linkage ring 69 and the grinding rod... Guided by the grinding frame 61, the linkage ring 69 swings while driving the grinding rod 60 to slide back and forth in the vertical direction. As a result, the grinding roller 141 also slides back and forth in the vertical direction while rotating. The grinding roller 141, which rotates and slides, grinds the surface of the gear, which helps to improve the grinding effect on the gear surface and further improves the grinding efficiency. At the same time, the rotation grinding and sliding grinding can be achieved simultaneously through a third motor 62, which is convenient and quick to control and has low cost.

[0035] Reference Figure 4The inner wall of the linkage cavity 601 is provided with an oil injection hole 81 and an oil outlet hole 82, both of which are fitted with sealing plugs. Regularly injecting lubricating oil into the linkage cavity 601 through the oil injection hole 81 and the oil outlet hole 82 can reduce wear between the worm gear 63 and the inner wall of the linkage cavity 601, thus extending the service life of the device.

[0036] The implementation principle of this application embodiment is as follows: When grinding multiple gears in batches, the piston rod of cylinder 52 first extends and retracts to drive the grinding table 14 away from the rotating rod 13. At this time, the first key block 21 and the second key block 22 are aligned with each other. The operator slides the gears onto the rotating rod 13 one by one, and then slides the gears onto the support rod 12. In this way, multiple gears can be arranged sequentially on the support rod 12, and the abutment block 121 abuts against the gear furthest from the rotating rod 13. When the gears need to be ground, the first motor 31 drives the lead screw 32 to slide, which in turn drives the abutment block 121 to slide on the support rod 12. The abutment block 121 abuts against the gear, causing one of the gears to slide onto the rotating rod 13. Then, by extending and retracting the cylinder 52, the grinding table 14 is brought closer to the rotating rod 13, which in turn causes the grinding roller 141 on the grinding table 14 to abut against the gear on the rotating rod 13. The third motor 62 drives the grinding roller 141 to rotate and slide back and forth. At the same time, the second motor 41 drives the rotating rod 13 to rotate on the end wall of the support rod 12. The grinding roller 141 can perform grinding work on different positions on the surface of the gear. After grinding, cylinder 52 drives the grinding table 14 away from the rotating rod 13. The second motor 41 then drives the rotating rod 13 to rotate, aligning the first key block 21 and the second key block 22. The second motor 41 then drives the abutment block 121 to slide and abut against the gear. Under the action of the abutment force, the processed gear on the rotating rod 13 falls into the recycling tank 15. At the same time, the abutment block 121 drives a new gear to slide onto the rotating rod 13 for grinding. The entire processing process only requires the operator to sequentially place the gears onto the support rod 12, and the equipment can sequentially grind the gears on the support rod 12 in batches. The entire process requires no manual operation, reducing labor costs and improving the automation level and production efficiency of the device. At the same time, the control is convenient and quick, and the implementation cost of the equipment is low. This application also discloses a grinding method for a powder metallurgy gear grinding device, comprising the following steps: the translation component 5 drives the grinding table 14 away from the rotating rod 13, and the gears to be ground are sequentially mounted on the rotating rod 13 and the support rod 12. The gears are neatly arranged on the support rod 12. The sliding component 3 drives the abutment block 121 to slide on the support rod 12, and the abutment block 121 abuts against the gear, so that the gear closest to the rotating rod 13 abuts against the rotating rod 13. The rotating component 4 drives the rotating rod 13 to rotate, and the translation component 5 drives the grinding table 14 to move closer to the rotating rod 13 so that the grinding roller 141 contacts the surface of the gear on the rotating rod 13. The grinding component 6 drives the grinding roller 141 to grind the surface of the gear. After grinding one gear, the abutment block 121 slides and pushes the gear on the rotating rod 13 to fall off and pushes the gear on the support rod 12 back onto the rotating rod 13 to continue working.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A powder metallurgy gear grinding device, characterized in that, The device includes a workbench (1) and a bracket (11) fixedly mounted on the workbench (1). A support rod (12) for gear fitting is horizontally fixed on the side wall of the bracket (11). A rotating rod (13) is rotatably mounted on the end wall of the support rod (12). A first key block (21) adapted to the gear is mounted on the support rod (12), and a second key block (22) adapted to the gear is mounted on the rotating rod (13). An abutment block (121) is slidably mounted on the support rod (12), and a sliding assembly (3) is mounted on the support rod (12) to drive the abutment block (121) to slide along the length of the support rod (12). The bracket (11) is equipped with a drive rotating rod (13) at the end of the support rod (12). A rotating assembly (4) for wall rotation; a grinding table (14) is also slidably arranged on the worktable (1), and a translation assembly (5) is arranged on the worktable (1) to drive the grinding table (14) to move closer to or away from the rotating rod (13). A grinding roller (141) and a grinding assembly (6) are arranged on the grinding table (14), and the grinding assembly (6) is used to drive the grinding roller (141) to rotate and slide; a recycling trough (15) is arranged on the worktable (1) and below the rotating rod (13); the translation assembly (5) includes a slide rail (51) and a cylinder (52), both of which are arranged on the worktable (1), and the grinding table (14) is slidably arranged on the slide rail (51). The piston rod of cylinder (52) is connected to the grinding table (14); the grinding assembly (6) includes a grinding frame (61), a third motor (62), a worm (63), a worm wheel (64), an eccentric wheel (65), a linkage rod (66), a linkage frame (67), a pin (68), a linkage ring (69), and a grinding rod (60). The third motor (62) and the grinding frame (61) are both mounted on the grinding table (14). The drive shaft of the third motor (62) is connected to the worm (63). The worm wheel (64) is rotatably mounted on the grinding frame (61) and meshes with the worm (63). The eccentric wheel (65) is fixedly mounted on the end wall of the worm wheel (64). The linkage frame (67) is rotatably mounted on the end wall of the worm wheel (64). On the grinding frame (61), one end of the linkage rod (66) is hinged to the surface of the eccentric wheel (65), and the other end of the linkage rod (66) is hinged to the surface of the linkage frame (67); the linkage frame (67) is symmetrically provided with strip holes (670), and the linkage ring (69) is rotated and slidably disposed between the strip holes (670) by means of a pin (68); the grinding rod (60) is slidably disposed on the grinding frame (61) and rotatedly disposed in the linkage ring (69), the grinding roller (141) is fixedly disposed at the top of the grinding rod (60), and the bottom end of the grinding rod (60) is provided with a linkage cavity (601) in which a worm gear (63) is inserted, and the worm gear (63) is connected to the inner wall of the linkage cavity (601) by a key.

2. The powder metallurgy gear grinding device according to claim 1, characterized in that, The sliding assembly (3) includes a first motor (31) and a lead screw (32). A sliding groove (122) is provided through the surface of the support rod (12). The abutment block (121) passes through the sliding groove (122) and is adapted to the sliding groove (122). The first motor (31) is fixedly mounted on the bracket (11). The lead screw (32) is rotatably mounted in the sliding groove (122). The drive shaft of the first motor (31) extends into the sliding groove (122) and is connected to the lead screw (32). The lead screw (32) and the abutment block (121) are threadedly connected.

3. The powder metallurgy gear grinding device according to claim 1, characterized in that, The rotating assembly (4) includes a second motor (41), a rotating rack (42), and a rotating gear (43). The rotating rack (42) is fixedly mounted on the end wall of the rotating rod (13). The end wall of the support rod (12) is provided with a rotating groove (123) for the rotating rack (42) to be inserted. The second motor (41) is fixedly mounted in the rotating groove (123). The rotating gear (43) is connected to the drive shaft of the second motor (41). The rotating rack (42) and the rotating gear (43) mesh with each other.

4. The powder metallurgy gear grinding device according to claim 1, characterized in that, A limiting groove (7) is provided on the rotating rod (13), and a limiting block (71) is slidably provided in the limiting groove (7). An arc-shaped surface (711) is provided at the top of the limiting block (71), and a spring (72) is provided in the limiting groove (7). One end of the spring (72) is fixed to the bottom wall of the limiting groove (7), and the other end of the spring (72) abuts against and is fixed to the bottom end of the limiting block (71).

5. The powder metallurgy gear grinding device according to claim 1, characterized in that, The first key block (21) is provided with a light emitter at one end facing the rotating rod (13), and the second key block (22) is provided with a light receiver at one end facing the support rod (12). The light receiver is connected to a controller, and the controller is connected to an alarm. The controller is used to control the alarm to sound when the light receiver does not receive the light signal emitted by the light emitter.

6. The powder metallurgy gear grinding device according to claim 1, characterized in that, The inner wall of the linkage cavity (601) is provided with an oil injection hole (81) and an oil outlet hole (82).

7. A grinding method using the powder metallurgy gear grinding device as described in claim 1, characterized in that, The process includes the following steps: the translation component (5) moves the grinding table (14) away from the rotating rod (13), and the gears to be ground are sequentially mounted on the rotating rod (13) and the support rod (12). The gears are neatly arranged on the support rod (12). The sliding component (3) moves the abutment block (121) on the support rod (12), and the abutment block (121) abuts against the gears, bringing the gear closest to the rotating rod (13) to the rotating rod (13). The rotating component (5) moves the grinding table (14) away from the rotating rod (13), and the gears closest to the rotating rod (13) abut against the rotating rod (13). 4) Drive the rotating rod (13) to rotate, and the translation component (5) drives the grinding table (14) to approach the rotating rod (13) so that the grinding roller (141) and the gear surface on the rotating rod (13) come into contact with each other. The grinding component (6) drives the grinding roller (141) to grind the gear surface. After grinding one gear, the abutment block (121) slides and pushes the gear on the rotating rod (13) to fall off and pushes the gear on the support rod (12) onto the rotating rod (13) to continue working.

Images