Positioning device for sprocket machining

Abstract

The utility model relates to a kind of positioning device for sprocket machining, it includes workbench, workbench is provided with mounting plate, bearing plate and clamping assembly are provided on mounting plate, sprocket is placed on bearing plate, clamping assembly is located in the inside of sprocket, clamping assembly includes arc-shaped compression plate that is equidistantly set along the circumference of sprocket, the outer arc surface of arc-shaped compression plate is attached with the inner periphery of sprocket, arc-shaped compression plate slides along the radial direction of sprocket to and the inner periphery wall of sprocket abutting or with the inner periphery wall of sprocket disengaging contact, driving assembly for driving arc-shaped compression plate sliding is provided on mounting plate.This application can clamp the inside of sprocket, it is convenient to process the outside of sprocket, not only positioning effect is good, but also improve the processing efficiency of sprocket.

Description

Technical Field

[0001] This utility model relates to the technical field of sprocket manufacturing and processing, and in particular to a positioning device for sprocket processing. Background Technology

[0002] Sprockets, as transmission components, have been widely used in various fields. In the manufacturing process of sprockets, positioning devices are often needed to position the sprockets so that operations such as turning, milling, and drilling can be performed.

[0003] Chinese utility model patent with publication number CN223012549U proposes a positioning device for sprocket processing. By setting up rubber blocks and extension plates, it is easy to realize the synchronous movement of two moving blocks under the drive of the drive structure to clamp the sprocket. When clamping the sprocket, the rubber blocks first contact the outer wall of the sprocket to clamp and position the sprocket through flexible clamping. Then, the two extension plates contact the outer ring of the sprocket to achieve a double clamping through the combination of flexible clamping and rigid contact clamping, so as to stably clamp the sprocket.

[0004] Regarding the above technical solutions, although the sprocket can be clamped by pressing and fixing the outer wall of the sprocket with a moving block, it will affect the operator's processing of the outer side of the sprocket. It is necessary to constantly change the clamped position of the sprocket and repeat the clamping operation, constantly exposing the area to be processed, which will affect the operator's processing efficiency of the sprocket. Therefore, we propose a positioning device for sprocket processing. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a positioning device for sprocket processing.

[0006] The positioning device for sprocket machining provided in this application adopts the following technical solution: A positioning device for sprocket processing includes a worktable with a mounting plate. The mounting plate has a support plate and a clamping assembly. The sprocket is placed on the support plate, and the clamping assembly is located inside the sprocket. The clamping assembly includes arc-shaped clamping plates equidistantly arranged along the circumference of the sprocket. The outer arc surface of the arc-shaped clamping plates is in contact with the inner circumferential surface of the sprocket. The arc-shaped clamping plates slide radially along the sprocket until they abut against or disengage from the inner circumferential wall of the sprocket. The mounting plate has a driving assembly for driving the arc-shaped clamping plates to slide.

[0007] Preferably, the drive assembly includes a drive motor, a bidirectional screw, a first drive nut, a second drive nut, a first connecting rod, and a second connecting rod. The drive motor is fixed to the mounting plate. The bidirectional screw is coaxially connected to the output shaft of the drive motor. The first and second drive nuts are respectively disposed on two opposite threads of the bidirectional screw. Both the first and second drive nuts are threadedly connected to the bidirectional screw. The first and second drive nuts move in opposite directions along the axial direction of the bidirectional screw. One end of the first connecting rod is hinged to the inner wall of the arc-shaped pressure plate, and the other end of the first connecting rod is hinged to the side wall of the first drive nut. One end of the second connecting rod is hinged to the inner wall of the arc-shaped pressure plate, and the other end of the second connecting rod is hinged to the side wall of the second drive nut.

[0008] Preferably, a support rod is provided below the bearing plate, the bottom end of the support rod is fixedly connected to the mounting plate, the top end of the support rod is fixedly connected to the bearing plate, and multiple bearing plates are equidistantly arranged along the circumference of the sprocket, with adjacent bearing plates being fixedly connected by a connecting ring.

[0009] Preferably, the support rod includes a fixed sleeve and a movable rod body. The bottom surface of the fixed sleeve is fixedly connected to the mounting plate, and the top surface of the fixed sleeve is provided with an opening for the movable rod body to pass through. The top surface of the movable rod body is fixedly connected to the bottom surface of the bearing plate. A spring is provided inside the fixed sleeve, the bottom end of the spring abuts against the inner bottom wall of the fixed sleeve, and the top end of the spring abuts against the bottom end of the movable rod body.

[0010] Preferably, a limiting ring plate is coaxially connected to the outer circumferential surface of the bottom end of the movable rod, and the outer diameter of the limiting ring plate is larger than the diameter of the movable opening.

[0011] Preferably, a rotating assembly is provided below the mounting plate. The rotating assembly includes a rotating motor, a rotating shaft, and a bearing. The housing of the rotating motor is fixedly mounted below the worktable via a mounting bracket. The rotating shaft is coaxially connected to the output shaft of the rotating motor. The top end of the rotating shaft is fixedly connected to the bottom surface of the mounting plate. A clearance hole is provided on the surface of the worktable for the rotating shaft to pass through. The bearing is fixedly mounted in the clearance hole. The rotating shaft is rotatably connected to the worktable via the bearing.

[0012] In summary, this application includes at least one of the following beneficial technical effects: 1. By pressing multiple arc-shaped clamping plates located inside the sprocket against the inner circumferential surface of the sprocket, the inner side of the sprocket can be clamped, which facilitates the processing of the outer side of the sprocket. This not only allows for the clamping and fixing of sprockets with center grooves of different sizes, but also improves the processing efficiency of the sprocket. 2. The rotating motor drives the mounting plate to rotate, and the mounting plate drives the bearing plate and sprocket to rotate through the support rod. This makes it easier for the operator to process the inside of the tooth groove on the outside of the sprocket without having to manually rotate the sprocket to adjust its position, thus further improving the processing efficiency of the sprocket. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a positioning device for sprocket processing according to Embodiment 1 of this application.

[0014] Figure 2 This is a cross-sectional structural schematic diagram of the positioning device used to demonstrate the positioning state of the sprocket being clamped and positioned in Embodiment 1 of this application.

[0015] Figure 3 This is a schematic diagram of the structure of the driving component used in Embodiment 1 of this application.

[0016] Figure 4 This is a cross-sectional structural diagram of the rotating assembly used in Embodiment 2 of this application.

[0017] Explanation of reference numerals in the attached drawings: 1. Sprocket; 2. Worktable; 3. Mounting plate; 4. Bearing plate; 41. Connecting ring; 5. Arc-shaped clamping plate; 6. Drive assembly; 61. Drive motor; 62. Bidirectional screw; 63. Drive nut one; 64. Drive nut two; 65. Connecting rod one; 66. Connecting rod two; 7. Support rod; 71. Fixed sleeve; 711. Movable opening; 712. Spring; 72. Movable rod body; 721. Limiting ring plate; 8. Rotating assembly; 81. Rotating motor; 82. Rotating shaft; 83. Bearing; 84. Mounting bracket; 85. Clearance hole. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0019] This application discloses a positioning device for sprocket machining.

[0020] Example 1 Reference Figure 1-3 The positioning device for sprocket processing includes a worktable 2, a mounting plate 3 on the worktable 2, a bearing plate 4 and a clamping assembly on the mounting plate 3, multiple bearing plates 4 are equidistantly arranged along the circumference of the sprocket 1, and adjacent bearing plates 4 are fixedly connected by a connecting ring 41. All bearing plates 4 are connected to the connecting ring 41 to form a ring-shaped plate, and the clamping assembly is located inside the ring-shaped plate.

[0021] The sprocket 1 is placed on the support plate 4, and the clamping assembly is located inside the sprocket 1. The clamping assembly includes arc-shaped pressure plates 5 that are equidistantly arranged along the circumference of the sprocket 1. The outer arc surface of the arc-shaped pressure plate 5 is in contact with the inner circumferential surface of the sprocket 1. The arc-shaped pressure plate 5 slides radially along the sprocket 1 until it abuts against the inner circumferential wall of the sprocket 1 or disengages from the inner circumferential wall of the sprocket 1. The mounting plate 3 is provided with a driving assembly 6 for driving the arc-shaped pressure plate 5 to slide.

[0022] The drive assembly 6 includes a drive motor 61, a bidirectional screw 62, a first drive nut 63, a second drive nut 64, a first connecting rod 65, and a second connecting rod 66. The drive motor 61 is fixed on the mounting plate 3. The bidirectional screw 62 is coaxially connected to the output shaft of the drive motor 61. The first drive nut 63 and the second drive nut 64 are respectively set on two reverse threads of the bidirectional screw 62. The first drive nut 63 and the second drive nut 64 are both threadedly connected to the bidirectional screw 62. The first drive nut 63 and the second drive nut 64 move in opposite directions along the axial direction of the bidirectional screw 62. One end of the first connecting rod 65 is hinged to the inner wall of the arc-shaped pressure plate 5, and the other end of the first connecting rod 65 is hinged to the side wall of the first drive nut 63. One end of the second connecting rod 66 is hinged to the inner wall of the arc-shaped pressure plate 5, and the other end of the second connecting rod 66 is hinged to the side wall of the second drive nut 64.

[0023] The drive motor 61 is a reversible motor. When the drive motor 61 rotates forward, it drives the bidirectional screw 62 to rotate clockwise, causing the first drive nut 63 and the second drive nut 64 to move closer to each other. The ends of the connecting rods 65 and 66, which are hinged to the arc-shaped pressure plate 5, move away from the bidirectional screw 62. The arc-shaped pressure plate 5 moves away from the bidirectional screw 62 until it presses against the inner circumferential wall of the sprocket 1, after which the drive motor 61 shuts off. During the rotation of the bidirectional screw 62, the operator holds the connecting rod 65 or the second connecting rod 66 with their hand to prevent the first drive nut 63 and the second drive nut 64 from rotating (the operator's hand does not grip the connecting rod 65 or the second connecting rod 66 tightly; the connecting rods 65 and the second connecting rod 66 can swing up and down but do not rotate circumferentially along the sprocket 1). When the drive motor 61 reverses, it drives the bidirectional screw 62 to rotate counterclockwise, driving nut 1 63 and drive nut 2 64 to move away from each other. The ends of connecting rod 1 65 and connecting rod 2 66 that are hinged to the arc-shaped clamping plate 5 move towards the bidirectional screw 62. The arc-shaped clamping plate 5 moves towards the bidirectional screw 62 until it disengages from the inner circumferential wall of the sprocket 1. Then the drive motor 61 shuts off, and the sprocket 1 can be removed.

[0024] A support rod 7 is provided below the support plate 4. The bottom end of the support rod 7 is fixedly connected to the mounting plate 3, and the top end of the support rod 7 is fixedly connected to the support plate 4.

[0025] The support rod 7 includes a fixed sleeve 71 and a movable rod 72. The bottom surface of the fixed sleeve 71 is fixedly connected to the mounting plate 3. The top of the fixed sleeve 71 is provided with a movable opening 711 for the movable rod 72 to pass through. The top surface of the movable rod 72 is fixedly connected to the bottom surface of the bearing plate 4. A spring 712 is provided inside the fixed sleeve 71. The bottom end of the spring 712 abuts against the inner bottom wall of the fixed sleeve 71, and the top end of the spring 712 abuts against the bottom end of the movable rod 72.

[0026] After placing the sprocket 1 on the bearing plate 4, press the bearing plate 4 down according to the position of the arc-shaped clamping plate 5 so that the arc-shaped clamping plate 5 corresponds to the inner peripheral wall of the sprocket 1. When the arc-shaped clamping plate 5 is pressed against the inner peripheral wall of the sprocket 1, the length of the support rod 7 also remains stable to accommodate sprockets 1 with different thicknesses.

[0027] A limiting ring plate 721 is coaxially connected to the outer circumferential surface of the bottom end of the movable rod 72. The outer diameter of the limiting ring plate 721 is larger than the diameter of the movable opening 711 to prevent the movable rod 72 from detaching from the fixed sleeve 71.

[0028] The implementation principle of the positioning device for sprocket processing in Embodiment 1 of this application is as follows: When positioning the sprocket 1, place the sprocket 1 on the bearing plate 4, press down the bearing plate 4 according to the position of the arc-shaped clamping plate 5, so that the arc-shaped clamping plate 5 and the inner peripheral wall of the sprocket 1 can be aligned. The operator starts the drive motor 61 to rotate forward, the double screw 62 rotates clockwise, the drive nut 1 63 and the drive nut 2 64 move towards each other, the end of the connecting rod 1 65 and the connecting rod 2 66 that is hinged to the arc-shaped clamping plate 5 moves away from the double screw 62, and the arc-shaped clamping plate 5 moves away from the double screw 62 until it is pressed against the inner peripheral wall of the sprocket 1, then turn off the drive motor 61. When the arc-shaped clamping plate 5 is pressed against the inner peripheral wall of the sprocket 1, the length of the support rod 7 also remains stable. After the outer side of sprocket 1 is machined, the operator starts the drive motor 61 to reverse, the double screw 62 rotates counterclockwise, the drive nut 1 63 and drive nut 2 64 move away from each other, the end of the connecting rod 1 65 and connecting rod 2 66 that is hinged to the arc-shaped clamping plate 5 moves towards the direction close to the double screw 62, the arc-shaped clamping plate 5 moves towards the direction close to the double screw 62 until it is disengaged from the inner circumferential wall of sprocket 1, and then the drive motor 61 is turned off. At this time, the spring 712 pushes the bearing plate 4 upward to restore its original length, so that the operator can take out sprocket 1. During the rotation of the bidirectional screw 62, the operator should hold the connecting rod 65 or the connecting rod 66 to prevent the drive nut 63 and the drive nut 64 from rotating.

[0029] Example 2 Reference Figure 4The difference between this embodiment and Embodiment 1 is that a rotating assembly 8 is provided below the mounting plate 3. The rotating assembly 8 includes a rotating motor 81, a rotating shaft 82, and a bearing 83. The housing of the rotating motor 81 is fixedly mounted below the workbench 2 via a mounting bracket 84. The rotating shaft 82 is coaxially connected to the output shaft of the rotating motor 81. The top end of the rotating shaft 82 is fixedly connected to the bottom surface of the mounting plate 3. A clearance hole 85 is provided on the table surface of the workbench 2 for the rotating shaft 82 to pass through. The bearing 83 is fixedly installed in the clearance hole 85. The rotating shaft 82 is rotatably connected to the workbench 2 via the bearing 83.

[0030] The implementation principle of the positioning device for sprocket processing in Embodiment 2 of this application is as follows: The operator starts the rotating motor 81, which drives the mounting plate 3 to rotate. The mounting plate 3 drives the bearing plate 4 and the sprocket 1 to rotate through the support rod 7, which makes it easier for the operator to process the inside of the tooth groove on the outside of the sprocket 1 without having to manually rotate the sprocket 1 to adjust its position, thus further improving the processing efficiency of the sprocket 1.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning device for sprocket processing, characterized in that: The device includes a workbench with a mounting plate, a support plate, and a clamping assembly. A sprocket is placed on the support plate, and the clamping assembly is located inside the sprocket. The clamping assembly includes arc-shaped pressure plates equidistantly arranged along the circumference of the sprocket. The outer arc surface of the arc-shaped pressure plates is in contact with the inner circumferential surface of the sprocket. The arc-shaped pressure plates slide radially along the sprocket until they abut against or disengage from the inner circumferential wall of the sprocket. The mounting plate is provided with a driving assembly for driving the arc-shaped pressure plates to slide.

2. The positioning device for sprocket processing according to claim 1, characterized in that: The drive assembly includes a drive motor, a bidirectional screw, a first drive nut, a second drive nut, a first connecting rod, and a second connecting rod. The drive motor is fixed to a mounting plate. The bidirectional screw is coaxially connected to the output shaft of the drive motor. The first and second drive nuts are respectively disposed on two opposing threads of the bidirectional screw. Both the first and second drive nuts are threadedly connected to the bidirectional screw. The first and second drive nuts move in opposite directions along the axial direction of the bidirectional screw. One end of the first connecting rod is hinged to the inner wall of the arc-shaped pressure plate, and the other end of the first connecting rod is hinged to the side wall of the first drive nut. One end of the second connecting rod is hinged to the inner wall of the arc-shaped pressure plate, and the other end of the second connecting rod is hinged to the side wall of the second drive nut.

3. The positioning device for sprocket processing according to claim 1, characterized in that: A support rod is provided below the bearing plate. The bottom end of the support rod is fixedly connected to the mounting plate, and the top end of the support rod is fixedly connected to the bearing plate. Multiple bearing plates are arranged at equal intervals along the circumference of the sprocket, and adjacent bearing plates are fixedly connected by connecting rings.

4. The positioning device for sprocket processing according to claim 3, characterized in that: The support rod includes a fixed sleeve and a movable rod. The bottom surface of the fixed sleeve is fixedly connected to the mounting plate. The top surface of the fixed sleeve is provided with an opening for the movable rod to pass through. The top surface of the movable rod is fixedly connected to the bottom surface of the bearing plate. A spring is provided inside the fixed sleeve. The bottom end of the spring abuts against the inner bottom wall of the fixed sleeve, and the top end of the spring abuts against the bottom end of the movable rod.

5. The positioning device for sprocket processing according to claim 4, characterized in that: A limiting ring plate is coaxially connected to the outer circumferential surface of the bottom end of the movable rod. The outer diameter of the limiting ring plate is larger than the diameter of the movable opening.

6. The positioning device for sprocket processing according to claim 1, characterized in that: A rotating assembly is provided below the mounting plate. The rotating assembly includes a rotating motor, a rotating shaft, and a bearing. The housing of the rotating motor is fixedly mounted below the worktable by a mounting bracket. The rotating shaft is coaxially connected to the output shaft of the rotating motor. The top end of the rotating shaft is fixedly connected to the bottom surface of the mounting plate. A clearance hole is provided on the worktable surface for the rotating shaft to pass through. The bearing is fixedly installed in the clearance hole. The rotating shaft is rotatably connected to the worktable through the bearing.

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