Gear upper tooth groove grinding device

Abstract

The invention relates to a gear upper tooth groove grinding device which comprises a rack, a tooth groove grinding mechanism, a driving mechanism and a tensioning mechanism. The tooth groove grinding mechanism comprises a mounting base, a sliding piece, a grinding disc, an elastic piece, a first belt wheel, a second belt wheel and a flat belt. The sliding piece is slidably mounted on the mounting base in the radial direction of the gear to be polished; the grinding disc is rotatably mounted on the sliding piece; the elastic piece applies thrust towards the gear to be polished to the sliding piece so that the polishing disc can abut against a tooth groove in the gear to be polished. A first belt wheel is rotatably mounted on the mounting seat, a second belt wheel is coaxially fixed on the grinding disc, and the first belt wheel and the second belt wheel are connected through a flat belt; the driving mechanism drives the first belt wheel to rotate and drives the mounting base to reciprocate in the axis direction of the gear to be polished. The grinding disc is pushed by the elastic piece to abut against the interior of the tooth groove all the time, and it is effectively prevented that gaps are generated between the grinding disc and the tooth groove of the gear due to abrasion.

Description

Technical Field

[0001] The present invention relates to the technical field of gear processing, and in particular to a tooth groove grinding device on a gear. Background Art

[0002] A gear is a mechanical component with teeth on its rim that can continuously mesh to transmit motion and power. The application of gears in transmission has appeared very early. The principle of gear cutting and the special machine tools and tools that use this principle to cut gears have appeared one after another. With the development of production, the smooth operation of gears has received attention. Gears need to be polished after production.

[0003] For example, the patent with announcement number CN118905352B discloses a gear processing deburring and grinding device, which includes a support platform, support legs are symmetrically installed at the lower end of the support platform, and a protective frame is fixed to the upper end of the support platform, a positioning plate is provided in the middle of the protective frame, and the positioning plate passes through the middle of the support platform, a clamping mechanism is provided at the upper end of the positioning plate, and the clamping mechanism includes a limit groove, a support frame and a threaded screw, the limit groove is provided on the upper end face of the positioning plate, and the lower end of the support frame extends into the limit groove, and the threaded screw passes through the lower end of the support frame, and a grinding mechanism is provided on the right side of the positioning plate. The gear processing deburring and grinding device is provided with a grinding structure that can move back and forth, which rotates synchronously during the reciprocating motion and cooperates with the rotatable gear to improve the grinding efficiency and the grinding effect on burrs.

[0004] However, during the grinding process, the device uses a grinding disc to grind the tooth grooves of the gear. However, after a long period of grinding, the grinding disc will be worn, and a gap will be generated between the grinding disc and the tooth groove of the gear, thereby affecting the grinding effect of the tooth groove on the gear. Summary of the Invention

[0005] In response to the above-mentioned problems existing in the prior art, the technical problem to be solved by the present invention is: in the process of grinding the tooth grooves on the gear, the existing device uses a grinding disc to grind the tooth grooves of the gear. However, after a long period of grinding, the grinding disc will be worn. For this reason, a gap will be generated between the grinding disc and the gear tooth groove, thereby affecting the grinding effect of the tooth grooves on the gear.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: a tooth groove grinding device on a gear, comprising: a frame on which the gear to be polished is rotatably mounted; The tooth groove grinding mechanism comprises: a mounting seat, a sliding member, a grinding disc, an elastic member, a first pulley, a second pulley and a flat belt; the sliding member is slidably mounted on the mounting seat along the radial direction of the gear to be ground; the grinding disc is rotatably mounted on the sliding member; the elastic member applies a thrust toward the gear to be ground on the sliding member so that the grinding disc abuts against the tooth groove on the gear to be ground; a first pulley is rotatably mounted on the mounting seat, a second pulley is coaxially fixed on the grinding disc, and the first pulley and the second pulley are connected by a flat belt; a driving mechanism, the driving mechanism driving the first pulley to rotate and driving the mounting seat to reciprocate in the axial direction of the gear to be polished; and A tensioning mechanism is used to adaptively tension the flat belt according to the sliding distance of the sliding member.

[0007] Preferably, the driving mechanism includes: a first driving member, a reciprocating screw, a nut seat and a transmission assembly; the first driving member drives the first pulley to rotate; the mounting seat is slidably mounted on the frame along the axial direction of the gear to be polished; the reciprocating screw is arranged along the sliding direction of the mounting seat, and the reciprocating screw is rotatably mounted on the frame; the nut seat is fixedly mounted on the mounting seat, and the nut seat is connected to the reciprocating screw; the first pulley drives the reciprocating screw to rotate through the transmission assembly.

[0008] Preferably, the transmission assembly includes: a worm wheel, a worm and a spline shaft; the worm is coaxially fixed to the first pulley, the worm wheel is rotatably mounted on the mounting seat, and the worm wheel is meshed with the worm; the spline shaft is coaxially fixed to the reciprocating screw, and the spline shaft is coaxially slidably plugged with the worm wheel Preferably, it further comprises a guide rod, which is fixedly mounted on the frame, and the guide rod and the reciprocating screw are arranged parallel to each other, and the guide rod is slidably connected to the mounting seat.

[0009] Preferably, the tensioning mechanism includes: a tensioning wheel, a slider, a bidirectional screw, a transmission gear and a rack; the tensioning wheel is rotatably mounted on the slider; and the tensioning wheel abuts against the inner wall of the flat belt; two tensioning wheels and sliders are arranged opposite to each other, and the two sliders are slidably mounted on the mounting seat along the axial direction of the gear to be polished; the bidirectional screw is rotatably mounted on the mounting seat, and the bidirectional screw is threadedly connected to the two sliders to drive the two sliders to slide towards each other; the transmission gear is coaxially fixed with the bidirectional screw; the rack is fixedly mounted on the sliding member along the sliding direction of the sliding member, and the transmission gear is meshed with the rack.

[0010] Preferably, it also includes an avoidance mechanism, which includes: a sleeve, a connecting gear, a half gear and a second driving member; the sleeve is rotatably mounted on the frame, and the sleeve is spline-connected to the bidirectional screw; the connecting gear is coaxially fixed to the sleeve; the half gear is rotatably mounted on the frame, and the half gear is engaged with the connecting gear; the second driving member drives the half gear to rotate.

[0011] Preferably, the edge of the grinding disc is matched with the tooth groove on the gear to be ground.

[0012] Preferably, it further comprises a rotating seat, which is rotatably mounted on the frame to mount the gear to be polished.

[0013] Compared with the prior art, the present invention has at least the following advantages: 1. Effectively prevent the grinding disc from wearing out and causing a gap between it and the gear tooth groove, thereby improving the grinding effect on the gear tooth groove. In the present invention, the gear to be polished is mounted on a frame, so that the grinding disc moves into one of the tooth grooves on the gear, and the driving mechanism is controlled to operate. The driving mechanism drives the first pulley to rotate, and the first pulley drives the second pulley to rotate through a flat belt, and the second pulley drives the grinding disc fixed coaxially therewith to rotate; at the same time, the driving mechanism drives the mounting seat to move back and forth in the axial direction of the gear to be polished, so that the grinding in the tooth groove can be achieved, and by rotating the gear to be polished, each tooth groove on the gear can be polished; and the elastic member pushes the sliding member toward the gear to slide, so that the grinding disc can always abut against the tooth groove, effectively preventing the grinding disc from wearing out and causing a gap between it and the gear tooth groove, thereby improving the grinding effect on the gear tooth groove; 2. Through the provision of a tensioning mechanism, the tensioning mechanism can adaptively tension the flat belt according to the sliding distance of the slider, ensuring that when the spacing between the first and second pulleys changes, there is always sufficient friction between the flat belt and the first and second pulleys to drive the first and second gears to rotate. In the present invention, the elastic member pushes the slider to slide, thereby changing the spacing between the first and second pulleys; the slider drives the rack to move, the rack drives the transmission gear to rotate, the transmission gear drives the bidirectional screw to rotate, the bidirectional screw drives the slider to slide, and the slider drives the tensioning pulley to move. In this way, the flat belt is adaptively tensioned by the tensioning pulley according to the sliding distance of the slider.

[0014] 3. The drive mechanism can synchronously drive the grinding disc to rotate and move, thereby achieving grinding of the tooth groove. In the present invention, the first drive member is controlled to operate, and the first drive member drives the first pulley to rotate, thereby driving the grinding disc to rotate; at the same time, the first pulley drives the reciprocating screw through the transmission assembly, and the reciprocating screw drives the nut seat to reciprocate, and the nut seat drives the mounting seat to move, thereby driving the grinding disc to move within the tooth groove.

[0015] 4. The worm gear and worm reducer's characteristics and the characteristics of changing the direction of rotation are fully utilized to ensure that when the grinding disc has a higher speed to grind the gear, it has a lower speed to move in the length direction of the tooth groove, thus improving the grinding accuracy of the tooth groove.

[0016] 5. After the grinding of one of the tooth grooves on the gear is completed, the grinding disc is controlled to retreat from the tooth groove by the avoidance mechanism to facilitate the processing of the next tooth groove. In the present invention, the second driving member is actuated, and the second driving member drives the half gear to rotate. When the half gear rotates to the side with the gear teeth, the half gear drives the connecting gear to rotate, the connecting gear drives the shaft sleeve to rotate, the shaft sleeve drives the bidirectional screw to rotate, the bidirectional screw drives the transmission gear to rotate, the transmission gear drives the rack to move, the rack drives the transmission member to move, and the transmission member drives the grinding disc to move toward the side away from the gear to be polished; in this way, after the grinding of one of the tooth grooves on the gear is completed, the avoidance mechanism controls the grinding disc to retreat from the tooth groove, thereby driving the gear to be polished to rotate so that the next tooth groove is aligned with the grinding disc; after the half gear is separated from the connecting gear, under the action of the elastic member, the sliding member can push the grinding disc to move into the next tooth groove to achieve the grinding of the next tooth groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 A three-dimensional diagram of a gear tooth groove grinding device provided in an embodiment of the present invention.

[0019] Figure 2 A three-dimensional diagram of a tensioning mechanism provided in an embodiment of the present invention.

[0020] Figure 3 This is a schematic structural diagram of the avoidance mechanism provided in an embodiment of the present invention.

[0021] Figure markings: 1. Frame; 2. Tooth groove grinding mechanism; 21. Mounting seat; 22. Sliding member; 23. Grinding disc; 24. First pulley; 25. Second pulley; 26. Flat belt; 3. Driving mechanism; 31. Reciprocating screw; 32. Nut seat; 33. Worm gear; 34. Worm; 35. Spline shaft; 36. Guide rod; 4. Tensioning mechanism; 41. Tensioning wheel; 42. Sliding block; 43. Bidirectional screw; 44. Transmission gear; 45. Rack; 5. Avoiding mechanism; 51. Bushing; 52. Connecting gear; 53. Half gear; 54. Second driving member; 6. Rotating seat. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0023] See also Figure 1-Figure 3 , the embodiment provided by the present invention: a gear groove grinding device, comprising: a frame 1, a tooth groove grinding mechanism 2, a driving mechanism 3 and a tensioning mechanism 4; the frame 1 is rotatably mounted with a gear to be ground; further, it also includes a rotating seat 6, which is rotatably mounted on the frame 1 to mount the gear to be ground; through the arrangement of the rotating seat 6, it is convenient to rotate the gear to be ground; the tooth groove grinding mechanism 2 comprises: a mounting seat 21, a sliding member 22, a grinding disc 23, an elastic member, a first pulley 24, a second pulley 25 and a flat belt 26; the sliding member 22 is slidably mounted on the mounting seat 21 along the radial direction of the gear to be ground; the grinding disc 23 is rotatably mounted on the sliding member 22; On the moving part 22; the elastic part applies a thrust toward the gear to be polished on the sliding part 22, so that the polishing disc 23 abuts against the tooth groove on the gear to be polished; a first pulley 24 is rotatably mounted on the mounting seat 21, and a second pulley 25 is coaxially fixed on the polishing disc 23, and the first pulley 24 and the second pulley 25 are connected by a flat belt 26; further, the edge of the polishing disc 23 is matched with the tooth groove on the gear to be polished; in this way, multiple surfaces of the tooth groove can be polished at the same time; the driving mechanism 3 drives the first pulley 24 to rotate, and drives the mounting seat 21 to move back and forth in the axial direction of the gear to be polished; the tensioning mechanism 4 adaptively tensions the flat belt 26 according to the sliding distance of the sliding part 22.

[0024] During specific implementation, the elastic member is a spring; the gear to be polished is mounted on the frame 1, so that the polishing disc 23 moves into one of the tooth grooves on the gear, and the driving mechanism 3 is controlled to act. The driving mechanism 3 drives the first pulley 24 to rotate, and the first pulley 24 drives the second pulley 25 to rotate through the flat belt 26, and the second pulley 25 drives the polishing disc 23 coaxially fixed therewith to rotate; at the same time, the driving mechanism 3 drives the mounting seat 21 to move back and forth in the axial direction of the gear to be polished, so that the polishing in the tooth groove can be achieved, and by rotating the gear to be polished, each tooth groove on the gear can be polished; and by The elastic member pushes the sliding member 22 to slide toward the gear, so that the grinding disc 23 can always abut against the tooth groove, effectively preventing the grinding disc 23 from wearing out and generating a gap between the grinding disc 23 and the gear tooth groove, thereby improving the grinding effect of the tooth groove on the gear; and through the setting of the tensioning mechanism 4, the tensioning mechanism 4 can adaptively tension the flat belt 26 according to the sliding distance of the sliding member 22 to ensure that when the spacing between the first pulley 24 and the second pulley 25 changes, there is always sufficient friction between the flat belt 26 and the first pulley 24 and the second pulley 25 to drive the first gear and the second gear to rotate.

[0025] See also Figure 1-Figure 3 In other embodiments, the driving mechanism 3 includes: a first driving member, a reciprocating screw 31, a nut seat 32 and a transmission assembly; the first driving member drives the first pulley 24 to rotate; the mounting seat 21 is slidably mounted on the frame 1 along the axial direction of the gear to be polished; the reciprocating screw 31 is arranged along the sliding direction of the mounting seat 21, and the reciprocating screw 31 is rotatably mounted on the frame 1; the nut seat 32 is fixedly mounted on the mounting seat 21, and the nut seat 32 is connected to the reciprocating screw 31; the first pulley 24 drives the reciprocating screw 31 to rotate through the transmission assembly.

[0026] During specific implementation, the first driving member is controlled to move, and the first driving member drives the first pulley 24 to rotate, thereby driving the grinding disc 23 to rotate; at the same time, the first pulley 24 drives the reciprocating screw 31 to rotate through the transmission assembly, the reciprocating screw 31 drives the nut seat 32 to move back and forth, and the nut seat 32 drives the mounting seat 21 to move, thereby driving the grinding disc 23 to move in the tooth groove; through the setting of the driving mechanism 3, the grinding disc 23 can be driven to rotate and move synchronously, thereby achieving the grinding of the tooth groove. Furthermore, it also includes a guide rod 36, which is fixedly mounted on the frame 1, and the guide rod 36 and the reciprocating screw 31 are arranged parallel to each other, and the guide rod 36 is slidably connected to the mounting seat 21; through the setting of the guide rod 36, the movement of the mounting seat 21 on the frame 1 is made more stable.

[0027] See also Figure 1-Figure 3In other embodiments, the transmission assembly includes: a worm wheel 33, a worm 34 and a spline shaft 35; the worm 34 is coaxially fixed to the first pulley 24, the worm wheel 33 is rotatably mounted on the mounting seat 21, and the worm wheel 33 is meshed with the worm 34; the spline shaft 35 is coaxially fixed to the reciprocating screw, and the spline shaft 35 and the worm wheel 33 are coaxially slidably plugged. During specific implementation, the first pulley 24 drives the worm 34 to rotate, the worm 34 drives the worm wheel 33 to rotate, the worm wheel 33 drives the spline shaft 35 to rotate, and the spline shaft 35 drives the reciprocating screw 31 to rotate, fully utilizing the deceleration characteristics of the worm wheel 33 and the worm 34 and the characteristics of changing the direction of rotation, which can ensure that when the grinding disc 23 has a higher speed to grind the gear, it has a lower speed to move in the length direction of the tooth groove, thereby improving the accuracy of grinding in the tooth groove; and through the setting of the spline shaft 35, when the mounting seat 21 drives the worm wheel 33 to move, the worm wheel 33 can adaptively slide on the spline shaft 35 to ensure that the worm wheel 33 can drive the reciprocating screw 31 to rotate.

[0028] See also Figure 1-Figure 3 In other embodiments, the tensioning mechanism 4 includes: a tensioning wheel 41, a slider 42, a bidirectional screw 43, a transmission gear 44 and a rack 45; the tensioning wheel 41 is rotatably mounted on the slider 42; and the tensioning wheel 41 abuts against the inner wall of the flat belt 26; there are two tensioning wheels 41 and sliders 42 facing each other, and the two sliders 42 are slidably mounted on the mounting seat 21 along the axial direction of the gear to be polished; the bidirectional screw 43 is rotatably mounted on the mounting seat 21, and the bidirectional screw 43 is threadedly connected to the two sliders 42 to drive the two sliders 42 to slide in opposite directions; the transmission gear 44 is coaxially fixed with the bidirectional screw 43; the rack 45 is fixedly mounted on the sliding member 22 along the sliding direction of the sliding member 22, and the transmission gear 44 is meshed with the rack 45.

[0029] During specific implementation, the elastic member pushes the sliding member 22 to slide, so that the distance between the first pulley 24 and the second pulley 25 changes; the sliding member 22 drives the rack 45 to move, the rack 45 drives the transmission gear 44 to rotate, the transmission gear 44 drives the bidirectional screw 43 to rotate, the bidirectional screw 43 drives the slider 42 to slide, and the slider 42 drives the tensioning wheel 41 to move, so as to adaptively tension the flat belt 26 through the tensioning wheel 41 according to the sliding distance of the sliding member 22; when the distance between the first pulley 24 and the second pulley 25 becomes smaller, the distance between the two tensioning wheels 41 becomes larger, and when the distance between the first pulley 24 and the second pulley 25 becomes larger, the distance between the two tensioning wheels 41 becomes smaller.

[0030] See also Figure 1-Figure 3In another embodiment, a avoidance mechanism 5 is further included, which includes: a sleeve 51, a connecting gear 52, a half gear 53 and a second driving member 54; the sleeve 51 is rotatably mounted on the frame 1, and the sleeve 51 is spline-connected to the bidirectional screw 43; the connecting gear 52 is coaxially fixed to the sleeve 51; the half gear 53 is rotatably mounted on the frame 1, and the half gear 53 is engaged with the connecting gear 52; the second driving member 54 drives the half gear 53 to rotate.

[0031] When the second drive member 54 is in motion, the second drive member 54 drives the half gear 53 to rotate. When the half gear 53 rotates to the side with the gear teeth, the half gear 53 drives the connecting gear 52 to rotate, and the connecting gear 52 drives the shaft sleeve 51 to rotate. The shaft sleeve 51 drives the bidirectional screw 43 to rotate, and the bidirectional screw 43 drives the transmission gear 44 to rotate. The transmission gear 44 drives the rack 45 to move, and the rack 45 drives the transmission member to move, and the transmission member drives the grinding disc 23 to move toward the side away from the gear to be polished. In this way, after one of the tooth grooves on the gear is polished, the grinding disc 23 is controlled to retreat from the tooth groove by the avoidance mechanism 5, so that the gear to be polished can be driven to rotate so that the next tooth groove is aligned with the grinding disc 23. After the half gear 53 is separated from the connecting gear 52, under the action of the elastic member, the grinding disc 23 can be pushed to move into the next tooth groove by the sliding member 22 to realize the polishing of the next tooth groove.

[0032] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A tooth groove grinding device on a gear, characterized in that: include: a frame on which the gear to be polished is rotatably mounted; The tooth groove grinding mechanism comprises: a mounting seat, a sliding member, a grinding disc, an elastic member, a first pulley, a second pulley and a flat belt; the sliding member is slidably mounted on the mounting seat along the radial direction of the gear to be ground; the grinding disc is rotatably mounted on the sliding member; the elastic member applies a thrust toward the gear to be ground on the sliding member so that the grinding disc abuts against the tooth groove on the gear to be ground; a first pulley is rotatably mounted on the mounting seat, a second pulley is coaxially fixed on the grinding disc, and the first pulley and the second pulley are connected by a flat belt; a driving mechanism, the driving mechanism driving the first pulley to rotate and driving the mounting seat to reciprocate in the axial direction of the gear to be polished; and A tensioning mechanism is used to adaptively tension the flat belt according to the sliding distance of the sliding member.

2. A gear tooth groove grinding device according to claim 1, characterized in that: The driving mechanism includes: a first driving member, a reciprocating screw, a nut seat and a transmission assembly; the first driving member drives the first pulley to rotate; the mounting seat is slidably mounted on the frame along the axial direction of the gear to be polished; the reciprocating screw is arranged along the sliding direction of the mounting seat, and the reciprocating screw is rotatably mounted on the frame; the nut seat is fixedly mounted on the mounting seat, and the nut seat is connected to the reciprocating screw; the first pulley drives the reciprocating screw to rotate through the transmission assembly.

3. A gear tooth groove grinding device according to claim 2, characterized in that: The transmission assembly includes: a worm wheel, a worm and a spline shaft; the worm is coaxially fixed with the first pulley, the worm wheel is rotatably mounted on a mounting seat, and the worm wheel is meshed with the worm; the spline shaft is coaxially fixed with the reciprocating screw, and the spline shaft is coaxially slidably plugged with the worm wheel.

4. A gear tooth groove grinding device according to claim 2, characterized in that: It also includes a guide rod, which is fixedly installed on the frame, and the guide rod and the reciprocating screw are arranged parallel to each other, and the guide rod is slidably connected to the mounting seat.

5. The gear tooth groove grinding device according to claim 1, characterized in that: The tensioning mechanism includes: a tensioning wheel, a slider, a bidirectional screw, a transmission gear and a rack; the tensioning wheel is rotatably mounted on the slider; and the tensioning wheel abuts against the inner wall of the flat belt; two tensioning wheels and sliders are arranged opposite to each other, and the two sliders are slidably mounted on the mounting seat along the axial direction of the gear to be polished; the bidirectional screw is rotatably mounted on the mounting seat, and the bidirectional screw is threadedly connected to the two sliders to drive the two sliders to slide towards each other; the transmission gear is coaxially fixed with the bidirectional screw; the rack is fixedly mounted on the sliding member along the sliding direction of the sliding member, and the transmission gear is meshed with the rack.

6. A gear tooth groove grinding device according to claim 5, characterized in that: It also includes an avoidance mechanism, which includes: a sleeve, a connecting gear, a half gear and a second driving member; the sleeve is rotatably mounted on the frame, and the sleeve is spline-connected to the bidirectional screw; the connecting gear is coaxially fixed to the sleeve; the half gear is rotatably mounted on the frame, and the half gear is meshed with the connecting gear; the second driving member drives the half gear to rotate.

7. The gear tooth groove grinding device according to claim 1, characterized in that: The edge of the grinding disc is matched with the tooth groove on the gear to be ground.

8. The gear tooth groove grinding device according to claim 1, characterized in that: It also includes a rotating seat, which is rotatably installed on the frame to install the gear to be polished.

Images