Variable-speed sleeve chamfering device

Abstract

The utility model relates to the technical field of variable-speed sleeve machining, and discloses a variable-speed sleeve chamfering device which comprises a bottom plate, a chamfering mechanism is arranged on the upper surface of the bottom plate, a clamping mechanism is arranged on the upper surface of the bottom plate and located on the left side of the chamfering mechanism, and a first rotating rod is rotationally connected to the upper surface of the bottom plate and located on the left side of the clamping mechanism. A first synchronous wheel is installed outside the first rotating rod, and a positioning mechanism is arranged on the upper surface of the bottom plate and located on the left side of the first rotating rod. The first rotating rod is rotated anticlockwise to drive the rotating disc to rotate, so that the two linkage rods are folded to drive the two clamping blocks to get close, the variable-speed sleeve is clamped, variable-speed sleeves with different diameters can be clamped, a ratchet wheel is clamped by a pawl in the positioning mechanism, and the variable-speed sleeve can be positioned. And the first rotating rod cannot automatically rotate when the first rotating rod does not need to rotate clockwise, so that the phenomenon that the two clamping blocks loosen when clamping the speed change sleeve is avoided, and the clamping stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of speed change sleeve processing, in particular to a speed change sleeve chamfering device. Background Art

[0002] The speed change sleeve is a gearbox sliding sleeve, which is an important component of the gearbox. It locks the appropriate gear on the output shaft by sliding, rotating and nesting to achieve the switching of different gears. It needs to be chamfered during production and processing. The existing chamfering device provides clamping force to the speed change sleeve through the elasticity of the spring, which is not stable enough and is easy to loosen during the processing, which brings certain adverse effects to people's use process.

[0003] A Chinese patent discloses a chamfering method and a processing fixture for a movable gear sleeve (publication number CN115319496A). The patented technology drives the connection block to descend through the operation of an electric telescopic rod, and the connection block drives the pressure head to descend. Due to the limitation of the limit block, the right side of the pressure head rotates, so that the two groups of pressure heads clamp the gear sleeve and limit the position. The operation is simple, the structure is simple, the production cost is reduced, and the clamping is stable; the screw rod is driven to rotate by rotating the hand wheel, a sealed bearing is provided between the screw rod and the first fixed block, and the screw rod and the second fixed block are threadedly connected, so that the second fixed block is driven to move along the screw rod by rotating the hand wheel, and the second fixed block drives the second carrier plate to move, so that the distance between the first carrier plate and the second carrier plate is adjusted, so that the distance between the two groups of fixture components can be adjusted according to the size of the gear sleeve;

[0004] However, it has certain drawbacks: in order to clamp the gear sleeves of different sizes, the distance between the two carrier plates is adjusted by rotating the screw. During the actual processing, the gear sleeve will vibrate due to the friction and impact of the chamfering cutter. The vibration is transmitted to the carrier plate and then to the screw. Over time, the screw will rotate unnecessarily, resulting in unnecessary changes in the distance between the two carrier plates, and then the clamping will become loose. Utility Model Content

[0005] The utility model aims to provide a gear sleeve chamfering device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A speed change sleeve chamfering device comprises a base plate, a chamfering mechanism is arranged on the upper surface of the base plate, and a clamping mechanism is arranged on the upper surface of the base plate located on the left side of the chamfering mechanism, a first rotating rod is rotatably connected to the upper surface of the base plate located on the left side of the clamping mechanism, a first synchronous wheel is installed on the outside of the first rotating rod, a synchronous belt is installed on the outside of the first synchronous wheel, a second synchronous wheel is installed on the right end of the synchronous belt, a second rotating rod is installed on the inside of the second synchronous wheel, a ratchet is installed on the outside of the first rotating rod below the first synchronous wheel, and a positioning mechanism is arranged on the upper surface of the base plate located on the left side of the first rotating rod.

[0008] As a further solution of the utility model: the chamfering mechanism includes an L-shaped plate, a telescopic cylinder is installed on the upper surface of the L-shaped plate, a support plate is installed on the telescopic end of the telescopic cylinder, a motor is installed on the upper surface of one end of the support plate, and a chamfering knife is installed on the output end of the motor.

[0009] As a further solution of the utility model: the clamping mechanism includes a fixed plate, a turntable is installed above the fixed plate, and linkage rods are rotatably connected inside the left and right edges of the turntable, one end of the linkage rod is rotatably connected to a slide, a clamping block is installed on the upper end of the slide, and a fixing frame is installed on the upper surface of the fixed plate located on the upper side of the turntable.

[0010] As a further solution of the utility model: the positioning mechanism includes a positioning block, a spring is installed on the right surface of the positioning block, a pawl is movably fitted on the right end of the spring, a positioning rod is rotatably connected to the rear end of the pawl, and a pull rope is installed on the left surface of the front end of the pawl, and a pull block is installed on one end of the pull rope.

[0011] As a further solution of the utility model: the lower end of the L-shaped plate is installed on the upper surface of the base plate.

[0012] As a further solution of the utility model: the fixed plate is installed on the upper surface of the base plate, the lower end of the slide plate is slidably connected to the upper surface of the fixed plate, and the upper end of the slide plate is slidably connected to the fixed frame, the clamping block is located on the upper side of the fixed frame, the lower end of the second rotating rod is rotatably connected to the upper surface of the fixed plate, and the turntable is installed on the outside of the second rotating rod.

[0013] As a further solution of the utility model: the lower ends of the positioning block and the positioning rod are both installed on the upper surface of the bottom plate, and one end of the pull rope movably passes through the positioning block.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model rotates the first rotating rod counterclockwise to drive the rotating disk to rotate, so that the two linkage rods are closed to drive the two clamping blocks to approach, thereby clamping the speed change sleeve, and can clamp speed change sleeves of different diameters.

[0016] 2. The utility model is provided with a positioning mechanism, in which a pawl clamps the ratchet wheel, so that the first rotating rod cannot rotate by itself when it is not necessary to rotate clockwise, thereby avoiding the loosening of the clamping of the speed change sleeve by the two clamping blocks and improving the stability of the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a transmission sleeve chamfering device;

[0018] Figure 2 It is a structural schematic diagram of a clamping mechanism in a gear sleeve chamfering device;

[0019] Figure 3 The present invention is a structural schematic diagram of a positioning mechanism in a transmission sleeve chamfering device.

[0020] In the figure: 1. bottom plate; 2. chamfering mechanism; 3. L-shaped plate; 4. telescopic cylinder; 5. support plate; 6. motor; 7. chamfering knife; 8. clamping mechanism; 9. fixed plate; 10. turntable; 11. linkage rod; 12. slide plate; 13. clamping block; 14. fixed frame; 15. first rotating rod; 16. first synchronous wheel; 17. synchronous belt; 18. second synchronous wheel; 19. second rotating rod; 20. ratchet; 21. positioning mechanism; 22. positioning block; 23. spring; 24. ratchet; 25. positioning rod; 26. pull rope; 27. pull block. DETAILED DESCRIPTION

[0021] See also Figure 1 In the embodiment of the utility model, a transmission sleeve chamfering device comprises a bottom plate 1, a chamfering mechanism 2 is arranged on the upper surface of the bottom plate 1, the chamfering mechanism 2 comprises an L-shaped plate 3, the lower end of the L-shaped plate 3 is mounted on the upper surface of the bottom plate 1, a telescopic cylinder 4 is mounted on the upper surface of the L-shaped plate 3, a support plate 5 is mounted on the telescopic end of the telescopic cylinder 4, a motor 6 is mounted on the upper surface of one end of the support plate 5, and a chamfering knife 7 is mounted on the output end of the motor 6;

[0022] The telescopic cylinder 4 is preferably a hydraulic cylinder, which is used to drive the chamfering knife 7 to rise and fall;

[0023] The motor 6 is used to drive the chamfering knife 7 to rotate and chamfer the speed change sleeve;

[0024] The chamfering mechanism 2 can be connected to an electric slide rail to achieve overall displacement in the front, back, left and right directions.

[0025] exist Figure 1 and Figure 2Middle: The upper surface of the bottom plate 1 is located on the left side of the chamfering mechanism 2 and is provided with a clamping mechanism 8, the clamping mechanism 8 includes a fixing plate 9, the fixing plate 9 is installed on the upper surface of the bottom plate 1, a turntable 10 is installed above the fixing plate 9, the left and right edges of the turntable 10 are rotatably connected with linkage rods 11, one end of the linkage rod 11 is rotatably connected with a slide plate 12, a clamping block 13 is installed on the upper end of the slide plate 12, the upper surface of the fixing plate 9 is located on the upper side of the turntable 10 and is provided with a fixing frame 14, the lower end of the slide plate 12 is slidably connected to the upper surface of the fixing plate 9, and the slide plate 1 The upper end of the bottom plate 1 is slidably connected to the fixing frame 14, the clamping block 13 is located on the upper side of the fixing frame 14, the upper surface of the bottom plate 1 is located on the left side of the clamping mechanism 8 and is rotatably connected to the first rotating rod 15, the first synchronous wheel 16 is installed on the outside of the first rotating rod 15, the first synchronous wheel 16 is installed on the outside of the first synchronous wheel 16, the second synchronous wheel 18 is installed on the right end of the synchronous belt 17, the second synchronous wheel 18 is installed on the inside of the second rotating rod 19, the lower end of the second rotating rod 19 is rotatably connected to the upper surface of the fixing plate 9, and the rotating disk 10 is installed on the outside of the second rotating rod 19;

[0026] The upper surface of the fixed plate 9 is provided with a slide groove for the slide plate 12 to slide;

[0027] When the first rotating rod 15 is rotated counterclockwise, the synchronous belt 17 will drive the second rotating rod 19 to rotate, thereby driving the rotating disk 10 to rotate counterclockwise, and the two linkage rods 11 will close, thereby driving the two clamping blocks 13 to approach, and then clamping the speed change sleeve;

[0028] Turn the first rotating rod 15 clockwise, and the two clamping blocks 13 will separate;

[0029] The surfaces of the two clamping blocks 13 on the opposite sides are both angular surfaces, which are convenient for clamping speed change sleeves of different diameters;

[0030] The linkage rod 11 is an arc-shaped rod, and the two clamping blocks 13 can be brought closer or farther away by closing or opening the linkage rod 11 .

[0031] exist Figures 1 to 3 Middle: A ratchet 20 is installed outside the first rotating rod 15 and located below the first synchronous wheel 16. A positioning mechanism 21 is provided on the upper surface of the bottom plate 1 and located on the left side of the first rotating rod 15. The positioning mechanism 21 includes a positioning block 22. A spring 23 is installed on the right surface of the positioning block 22. A ratchet 24 is movably attached to the right end of the spring 23. A positioning rod 25 is rotatably connected to the rear end of the ratchet 24. The lower ends of the positioning block 22 and the positioning rod 25 are both installed on the upper surface of the bottom plate 1.

[0032] When the first rotating rod 15 is rotated counterclockwise, the pawl 24 will not get stuck on the ratchet 20, and the first rotating rod 15 can rotate normally; when the first rotating rod 15 is rotated clockwise, the pawl 24 gets stuck on the ratchet 20, the first rotating rod 15 cannot rotate, and the rotating disk 10 cannot rotate clockwise, and the two clamping blocks 13 always remain in a clamped state and will not loosen, thereby ensuring the stability of the clamping;

[0033] By pulling the pawl 24 outward so that it does not fit the ratchet 20 , the ratchet 20 can be rotated clockwise.

[0034] exist Figure 3 Middle: A pull rope 26 is installed on the left surface of the front end of the ratchet 24, one end of the pull rope 26 movably passes through the positioning block 22, and a pull block 27 is installed on one end of the pull rope 26;

[0035] The pull block 27 facilitates pulling the pawl 24 .

[0036] The working principle of the utility model is as follows: when in use, the staff places the speed change sleeve on the upper surface of the fixing frame 14 and between the two clamping blocks 13, and rotates the first rotating rod 15 counterclockwise to drive the second rotating rod 19 to rotate through the synchronous belt 17, thereby driving the turntable 10 to rotate counterclockwise, and the two slide plates 12 drive the two clamping blocks 13 to approach and finally fix the speed change sleeve; then, the motor 6 drives the chamfering knife 7 to rotate, and the telescopic cylinder 4 drives the chamfering knife 7 to descend to chamfer the speed change sleeve; after the chamfering is completed, the staff can pull the pull rope 26 through the pull block 27, thereby dragging the pawl 24 away from the ratchet 20, so that the first rotating rod 15 can be rotated clockwise to drive the turntable 10 to rotate, and the two linkage rods 11 are opened to drive the two clamping blocks 13 to separate, so that the processed speed change sleeve can be removed.

[0037] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gear shift sleeve chamfering device, comprising a base plate (1), a chamfering mechanism (2) being arranged on the upper surface of the base plate (1), and a clamping mechanism (8) being arranged on the upper surface of the base plate (1) on the left side of the chamfering mechanism (2), a first rotating rod (15) being rotatably connected to the upper surface of the base plate (1) on the left side of the clamping mechanism (8), a first synchronous wheel (16) being installed on the outside of the first rotating rod (15), a synchronous belt (17) being installed on the outside of the first synchronous wheel (16), a second synchronous wheel (18) being installed on the right end of the synchronous belt (17), and a second rotating rod (19) being installed on the inside of the second synchronous wheel (18), characterized in that: A ratchet wheel (20) is installed on the outside of the first rotating rod (15) and located below the first synchronous wheel (16), and a positioning mechanism (21) is provided on the upper surface of the bottom plate (1) and located on the left side of the first rotating rod (15).

2. A gear shift sleeve chamfering device according to claim 1, characterized in that: The chamfering mechanism (2) comprises an L-shaped plate (3), a telescopic cylinder (4) is mounted on the upper surface of the L-shaped plate (3), a support plate (5) is mounted on the telescopic end of the telescopic cylinder (4), a motor (6) is mounted on the upper surface of one end of the support plate (5), and a chamfering knife (7) is mounted on the output end of the motor (6).

3. A shift sleeve chamfering device according to claim 1, characterized in that: The clamping mechanism (8) comprises a fixed plate (9), a turntable (10) is installed above the fixed plate (9), and linkage rods (11) are rotatably connected to the left and right edges of the turntable (10), one end of the linkage rod (11) is rotatably connected to a slide plate (12), a clamping block (13) is installed at the upper end of the slide plate (12), and a fixing frame (14) is installed on the upper surface of the fixed plate (9) located on the upper side of the turntable (10).

4. A shift sleeve chamfering device according to claim 1, characterized in that: The positioning mechanism (21) comprises a positioning block (22), a spring (23) is installed on the right side surface of the positioning block (22), a pawl (24) is movably fitted on the right end of the spring (23), a positioning rod (25) is rotatably connected to the rear end of the pawl (24), and a pull rope (26) is installed on the left side surface of the front end of the pawl (24), and a pull block (27) is installed on one end of the pull rope (26).

5. The shift sleeve chamfering device according to claim 2, characterized in that: The lower end of the L-shaped plate (3) is mounted on the upper surface of the base plate (1).

6. A shift sleeve chamfering device according to claim 3, characterized in that: The fixing plate (9) is mounted on the upper surface of the bottom plate (1); the lower end of the sliding plate (12) is slidably connected to the upper surface of the fixing plate (9); and the upper end of the sliding plate (12) is slidably connected to the fixing frame (14); the clamping block (13) is located on the upper side of the fixing frame (14); the lower end of the second rotating rod (19) is rotatably connected to the upper surface of the fixing plate (9); and the rotating disk (10) is mounted on the outside of the second rotating rod (19).

7. A shift sleeve chamfering device according to claim 4, characterized in that: The lower ends of the positioning block (22) and the positioning rod (25) are both mounted on the upper surface of the base plate (1), and one end of the pull rope (26) movably passes through the positioning block (22).

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