Side cutting edge mechanism of the toothed part

Abstract

The present invention discloses a side cutting mechanism for a toothed part, which includes a tabletop. The center of the tabletop has a lifting unit that can move up and down relative to the tabletop. A plurality of cutting edge units are arranged circumferentially on the tabletop around the lifting unit. The cutting edge unit includes a slider slidably arranged on the tabletop. The rear end of the slider is connected with a punch located above the tabletop. A die holder is arranged on the tabletop, and the die holder is located outside the punch. A toothed part is fixedly arranged on the lifting unit. The lifting unit contacts the slider. When the lifting unit moves downward, it pushes the slider to move outward. The die holder abuts against the side of the toothed part, and the side of the toothed part is cut off by pressing the side of the toothed part with the punch. By the above method, in the side cutting mechanism for the toothed part of the present invention, the translational cutting edge unit moves from the inside to the outside, so as to cut off the entire side of the toothed part on the outside. By increasing the contact area between the punch and the side, the situation that the root of the toothed part is drawn during the cutting process is avoided, and the toothed machining accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the field of tooth-shaped part processing equipment, and particularly to a side cutting mechanism for tooth-shaped parts. Background Art

[0002] Tooth-shaped parts (such as clutch hubs, wheel hubs, etc.) are common parts in the mechanical field. After hot forging of tooth-shaped parts, the workpiece needs to be fixed on a machine tool for trimming and punching. Generally, the operation method is to first trim the workpiece and then punch the workpiece.

[0003] Patent CN201910971646.7 discloses a rotary trimming machine. By positioning the tooth-shaped part and then rotating circumferentially along the outer periphery of the tooth-shaped part through a trimming structure, rotary trimming is achieved. In the existing rotary trimming structure, when trimming, due to the small contact area between the punch and the tooth part, the root of the tooth part will be drawn in when the punch cuts the tooth part, and the bottom surface of the tooth part will be uneven. Fine trimming needs to be carried out later. Although this processing method is fast, the tooth shape accuracy after processing is not high enough. Summary of the Invention

[0004] The main technical problem to be solved by the present invention is to provide a side cutting mechanism for tooth-shaped parts. The side cutting unit moves from the inside to the outside in a translational manner, so as to cut off the entire side of the outer tooth-shaped part. By increasing the contact area between the punch and the side, the situation that the root of the tooth-shaped part is drawn in during the cutting process is avoided, and the tooth shape processing accuracy is improved.

[0005] To solve the above technical problem, a technical solution adopted by the present invention is: to provide a side cutting mechanism for tooth-shaped parts, including a tabletop. The center of the tabletop has a lifting unit that can move up and down relative to the tabletop. A plurality of cutting units are arranged circumferentially on the tabletop around the lifting unit. The cutting unit includes a slider slidably arranged on the tabletop. The rear end of the slider is connected to a punch located above the tabletop. A die holder is arranged on the tabletop and is located outside the punch. A tooth-shaped part is fixed on the lifting unit. The lifting unit contacts the slider. When the lifting unit moves downward, it pushes the slider to move outward. The die holder abuts against the side of the tooth-shaped part, and the side of the tooth-shaped part is cut off by pressing the side of the tooth-shaped part with the punch.

[0006] In a preferred embodiment of the present invention, guide blocks are further arranged on the left and right sides of the slider on the tabletop, and the slider slides along the guide blocks.

[0007] In a preferred embodiment of the present invention, the die holder has an opening structure that cooperates with the punch below. The punch moves into the interior of the opening structure and pushes out the cut side from the opening structure.

[0008] In a preferred embodiment of the present invention, the inner side of the female die seat has a toothed structure that cooperates with the toothed part, and the toothed structure cooperates with the toothed part to position the toothed part.

[0009] In a preferred embodiment of the present invention, the slider has an inclined pushing surface, and the lifting unit squeezes the inclined pushing surface to push the slider to move radially outward.

[0010] In a preferred embodiment of the present invention, a driving head is further provided in the table top, the output end of the driving head is connected to the slider, and after the lifting unit is lifted and separated from the slider, the driving head pushes the slider to move inward to reset.

[0011] In a preferred embodiment of the present invention, the slider has an L-shaped structure, and the driving head is located directly below the slider.

[0012] In a preferred embodiment of the present invention, the lifting unit includes a lifting rod passing through the middle hole of the platform, a driving member is connected below the lifting rod, the middle part of the lifting rod has an inclined wedge surface, and the driving member drives the lifting rod to descend, and presses the inclined pushing surface through the inclined wedge surface to push the slider to move.

[0013] In a preferred embodiment of the present invention, a rotating seat is movably provided above the lifting rod, a convex die seat is fixedly connected to the outside of the rotating seat, and the toothed part is cooperatively sleeved on the convex die seat.

[0014] In a preferred embodiment of the present invention, a plurality of limiting grooves are evenly spaced along the circumferential direction on the upper surface of the lifting rod, a plurality of positioning grooves are provided on the bottom surface of the rotating seat, steel balls are provided between the positioning grooves and the limiting grooves, and the rotating seat rotates on the lifting rod through the steel balls.

[0015] The beneficial effects of the present invention are as follows: For the side cutting edge mechanism of the toothed part of the present invention, the side edge of the toothed part is cut from the inside to the outside by the cutting edge unit, and the punch and the side edge form a surface contact cutting structure, which avoids the tooth part at the cutting part of the toothed part from being drawn, and improves the tooth shape accuracy of the toothed part.

[0016] For the side cutting edge mechanism of the toothed part of the present invention, the toothed part is fixed by the lifting unit and the female die seat, and the lifting unit provides power for the cutting edge unit during cutting, ensuring that the punch can cut the edge smoothly. After the cutting is completed, the lifting unit is lifted, and the driving head provides a reset force for the punch.

[0017] For the side cutting edge mechanism of the toothed part of the present invention, the guiding block on the table top is used to limit the moving path of the punch. While the female die seat positions the toothed part, the side edge cut from the toothed part is discharged through the opening structure, which is convenient for centralized recovery and treatment of waste materials.

[0018] The side cutting mechanism of the toothed part of the present invention realizes the circumferential rotation of the toothed part through the cooperation of the rotating seat and the lifting rod. After rotation, the toothed part can be edge-cut again by the punch to ensure that the side of the toothed part is completely cut off. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where:

[0020] Figure 1 is a schematic three-dimensional structure diagram of a preferred embodiment of the side cutting mechanism of the toothed part of the present invention;

[0021] Figure 2 is Figure 1 a sectional view of;

[0022] Figure 3 is a schematic structure diagram of the tabletop;

[0023] Figure 4 is Figure 3 a partial structure diagram of;

[0024] Figure 5 is a schematic three-dimensional structure diagram of the edge-cutting unit;

[0025] Figure 6 is a schematic three-dimensional structure diagram of the lifting unit;

[0026] Figure 7 is a schematic three-dimensional structure diagram of the lifting rod;

[0027] Figure 8 is a schematic three-dimensional structure diagram of the rotating seat;

[0028] Figure 9 is Figure 1 another state diagram of;

[0029] The marks of each component in the drawings are as follows: 1. Tabletop, 11. Guide block, 12. Die holder, 121. Opening structure, 2. Lifting unit, 21. Lifting rod, 211. Wedge surface, 212. Limit groove, 22. Driving part, 23. Rotating seat, 231. Positioning groove, 24. Punch holder, 3. Edge-cutting unit, 31. Slide block, 311. Inclined pushing surface, 32. Punch, 33. Driving head, 4. Toothed part, 41. Side edge. Detailed Embodiments

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below. The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of clear narration and are not used to limit the scope that can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope that the present invention can implement.

[0031] Please refer to Figures 1 to 9 , a side cutting mechanism for a toothed part, including a table 1, and a lifting unit 2 that can move up and down relative to the table 1 is provided at the center of the table 1. A plurality of cutting edge units 3 are provided on the circumference of the table around the lifting unit 2. Figure 1 and Figure 2 Only one cutting edge unit 3 is drawn in Figure 3 for illustration. A through hole is provided at the center of the platform, and the lifting unit 2 is located at the center of the through hole. As Figure 3 , the number of the cutting edge units 3 is 8, and they are evenly distributed around the lifting unit 2. The number of the cutting edge units 3 can be set according to needs, and the number in the preferred solution of this application is 8. The lower part of the table 1 can be connected to the base through connecting columns or the like, and this connection structure is a conventional structure of a toothed part processing die and is not drawn in the drawings.

[0032] The lifting unit 2 includes a lifting rod 21 passing through the middle hole of the platform, and a driving member 22 is connected below the lifting rod 21. The driving member 22 is a cylinder, and the telescopic movement of the cylinder drives the lifting rod 21 to move up and down relative to the table 1. At the same time, the cylinder is fixed on the base, which is a conventional structure of the die and will not be elaborated here.

[0033] Above the lifting rod 21, a rotating seat 23 is movably arranged. A punch seat 24 is fixedly connected to the outside of the rotating seat 23, and the toothed part 4 is fitted over the punch seat 24. A plurality of limiting grooves 212 are evenly arranged at intervals along the circumferential direction on the upper surface of the lifting rod 21. A plurality of positioning grooves 231 are provided on the bottom surface of the rotating seat 23. Steel balls are arranged between the positioning grooves 231 and the limiting grooves 212, and the rotating seat 23 rotates on the lifting rod 21 through the steel balls. The toothed part 4 is arranged on the punch seat 24, and the punch seat 24 has a toothed structure that cooperates with the toothed part 4 to position the toothed part 4 and prevent the toothed part 4 from rotating relative to the punch seat 24. Since the punches 32 of each trimming unit 3 are arranged at intervals, after a single trimming, there are still untrimmed parts on the side 41. At this time, by rotating the rotating seat 23, the rotating seat 23 rotates relative to the lifting rod 21 through the structure of the positioning groove 231, the limiting groove 212 and the steel balls. After adjusting the moving angle, the untrimmed part of the side 41 of the toothed part 4 is aligned with the trimming unit 3, and trimming can be performed again to ensure that the entire side 41 of the toothed part 4 is trimmed. The setting of 8 trimming units 3 realizes the trimming process of the toothed part 4 through one rotation and two trimmings. The rotating seat 23 can be externally connected to a motor for control, which is not shown in the figure.

[0034] In the middle of the lifting rod 21, there is an inclined wedge surface 211. The driving part 22 drives the lifting rod 21 to descend, and presses the inclined pushing surface 311 downward through the inclined wedge surface 211 to push the slider 31 to move. The inclined wedge surface 211 squeezes the trimming unit 3. When the lifting rod 21 moves downward, the inclined wedge surface 211 provides a radial thrust to the trimming unit 3, so that the trimming unit 3 moves radially outward, thereby realizing the trimming function.

[0035] The trimming unit 3 includes a slider 31 slidably arranged on the table 1. The rear end of the slider 31 is connected with a punch 32 located above the table 1. A die seat 12 is arranged on the table 1. The die seat 12 is located outside the punch 32. Guide blocks 11 are also arranged on the left and right sides of the slider 31 on the table 1, and the slider 31 slides along the guide blocks 11. A driving head 33 is also arranged in the table 1, and the output end of the driving head 33 is connected with the slider 31. After the lifting unit 2 is lifted and separated from the slider 31, the driving head 33 pushes the slider 31 to move inward to reset. The slider 31 is of an L-shaped structure. The driving head 33 is located directly below the slider 31, and the lower end is fixedly closed in the table 1 through a fixing block. The slider 31 is located in the middle of the guide blocks 11, and the slider 31 moves along the guide blocks 11. The driving head 33 is a cylinder. After a single side trimming is completed, the lifting mechanism is lifted and reset, and the driving head 33 pushes the slider 31 forward to return to the initial position.

[0036] The slider 31 has an inclined pushing surface 311, and the lifting unit 2 squeezes the inclined pushing surface 311 to push the slider 31 to move radially outward. During trimming, the initial state is as Figure 9。The lifting unit 2 moves downward until the toothed part 4 descends to the trimming position. At this time, the side 41 of the toothed part 4 is located between the punch 32 and the die holder 12, and the die holder 12 is in close contact with the toothed part 4 against the toothed part 4. The toothed part 4 is positioned by the punch holder 24 and the die holder 12. In this position, the inclined pushing surface 311 just contacts the inclined wedge surface 211. Then the lifting rod 21 continues to move downward. At this time, the toothed part 4 continues to descend, and the inclined wedge surface 211 starts to push the inclined pushing surface 311. The slider 31 is forced to move to the right, and the punch 32 contacts the side 41 of the toothed part 4 (the trimming time is extremely short, and the displacement of the toothed part 4 during the punching process is negligible). The side 41 located between the die holder 12 and the punch 32 is cut off by the punch 32. After the trimming is completed, the lower end surface of the toothed part 4 just abuts against the upper surface of the punch 32. At this time, the trimming is completed, as Figure 2 。Then the lifting rod 21 rises, and all components return to their original positions. After repeating the above step of rotating the punch holder 24, when the toothed part 4 rotates into place, the trimming step is repeated again until the trimming is completed.

[0037] Below the die holder 12, there is an opening structure 121 that cooperates with the punch 32. The punch 32 moves into the interior of the opening structure 121 and pushes out the cut side 41 from the opening structure 121. Inside the die holder 12, there is a toothed structure that cooperates with the toothed part 4. The toothed structure cooperates with the toothed part 4 to position the toothed part 4. The fertilizer cut off by the punch 32 just enters the opening structure 121. The opening structure 121 is arranged corresponding to the punch 32. The corresponding part of the opening structure 121 is the part cut off by the toothed part 4 in one trimming. After the punch 32 translates, it just enters the interior of the opening structure 121.

[0038] Different from the prior art, the side trimming mechanism of the toothed part of the present invention moves the trimming unit from the inside to the outside by translation, so as to cut off the entire side of the outer toothed part. By increasing the contact area between the punch and the side, the situation that the root of the toothed part is drawn during the cutting process is avoided, and the toothed machining accuracy is improved.

[0039] The above schematically describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of the present invention, they should fall within the protection scope of the present invention.

Claims

1. A side cutting mechanism for a toothed part, characterized in that It includes a tabletop. There is a lifting unit in the center of the tabletop that can move up and down relative to the tabletop. A plurality of trimming units are provided circumferentially around the lifting unit, and the trimming units are evenly distributed circumferentially around the lifting unit. The trimming unit includes a slider slidably arranged on the tabletop. The rear end of the slider is connected with a punch located above the tabletop. A die holder is provided on the tabletop, and the die holder is located outside the punch. A toothed member is fixedly arranged on the lifting unit. The lifting unit contacts the slider. When the lifting unit moves downward, it pushes the slider to move outward. The die holder abuts against the side of the toothed member, and the side of the toothed member is cut by pressing the side of the toothed member with the punch. The slider has an inclined pushing surface, and the lifting unit squeezes the inclined pushing surface to push the slider to move radially outward. A driving head is also provided inside the tabletop, and the output end of the driving head is connected with the slider. After the lifting unit lifts and separates from the slider, the driving head pushes the slider to move inward to reset. The slider is in an L-shaped structure, and the driving head is located directly below the slider. The lifting unit includes a lifting rod passing through the middle hole of the platform. A driving member is connected below the lifting rod. The middle part of the lifting rod has an inclined wedge surface. The driving member drives the lifting rod to descend, and the inclined wedge surface presses down the inclined pushing surface to push the slider to move. A rotating seat is movably arranged above the lifting rod, and a punch holder is fixedly connected to the outside of the rotating seat. The toothed member is fitted and sleeved on the punch holder. A plurality of limiting grooves are evenly arranged at intervals along the circumference on the upper surface of the lifting rod. A plurality of positioning grooves are provided on the bottom surface of the rotating seat. Steel balls are arranged between the positioning grooves and the limiting grooves, and the rotating seat rotates on the lifting rod through the steel balls. The inclined wedge surface squeezes the trimming unit. When the lifting rod moves downward, the inclined wedge surface provides a radial thrust to the trimming unit, so that the trimming unit moves radially outward, thus realizing the trimming function.

2. The side cutting edge mechanism of the toothed part according to claim 1, characterized in that, Guide blocks are also provided on the left and right sides of the slider on the tabletop, and the slider slides along the guide blocks.

3. The side cutting edge mechanism of the toothed part according to claim 2, characterized in that, The lower part of the die holder has an opening structure that cooperates with the punch. The punch moves into the inside of the opening structure and pushes out the cut side from the opening structure.

4. The side cutting edge mechanism of the tooth-shaped part according to claim 3, characterized in that, The inner side of the die holder has a toothed structure that cooperates with the toothed member, and the toothed structure cooperates with the toothed member to position the toothed member.

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