Bicycle rear fork disc brake seat machining device

Abstract

The invention discloses a bicycle rear fork disc brake seat machining device, and relates to the technical field of bicycle machining. The clamping device comprises a clamping control system, the clamping control system comprises an X-axis linear sliding rail module mounted on the ground, a Y-axis linear sliding rail module is mounted on the X-axis linear sliding rail module, a Z-axis linear sliding rail module is mounted on the Y-axis linear sliding rail module, a mounting frame is mounted on the Z-axis linear sliding rail module, a clamping assembly is mounted on the outer side of the mounting frame, and the clamping assembly is mounted on the outer side of the mounting frame. The clamping assembly clamps the rear fork from the interior of the rear fork. A machining assembly is arranged on the right side of the clamping control system, the wheel type design is adopted for the machining assembly, and a milling tool, a drilling tool and a tapping tool are arranged on the machining assembly. A rear fork internal triangular clamping mode is adopted, the clamping stability is high, and the clamping device can be suitable for bicycle rear forks of different models; and meanwhile, the hook claw and the rear fork disc brake seat are completely not shielded, so that the processing is convenient.

Description

Technical Field

[0001] This invention relates to the field of bicycle manufacturing technology, and more specifically to a bicycle rear fork disc brake mount manufacturing device. Background Technology

[0002] As a core component connecting the bicycle frame and the disc brake assembly, the machining precision of the bicycle rear fork disc brake mount directly determines the coaxiality and flatness of the disc brake installation, as well as the overall braking stability and riding safety of the bicycle. This component typically requires the completion of key processes such as end face milling, bolt hole drilling, and thread tapping, demanding high machining standards and involving strong process interrelationships.

[0003] The patent (publication number: CN104551678B) discloses a bicycle rear fork disc brake seat processing device, including a clamping mechanism for fixing the rear fork disc brake seat, and a milling mechanism, a drilling mechanism, and a tapping mechanism arranged side by side. It also includes a shifting mechanism that can sequentially send the clamping mechanism and the rear fork disc brake seat to the milling mechanism, the drilling mechanism, and the tapping mechanism for processing. The milling mechanism drives the milling cutter and the milling motor to process the rear fork disc brake seat through a first linear slide rail, a first lead screw, and a milling servo motor. The drilling mechanism and the tapping mechanism are jointly driven to process the rear fork disc brake seat through a second linear slide rail, a second lead screw, and a drilling and tapping servo motor. The shifting mechanism includes a shifting bracket for mounting the clamping mechanism, a third linear slide rail for horizontally sliding and fixing the shifting bracket, and a displacement servo motor for driving the clamping mechanism and the rear fork disc brake seat to slide through the third lead screw.

[0004] Although the aforementioned patent achieves automated processing, the following technical problems exist in actual use: 1. Fixed workstation layout and poor versatility: The milling, drilling, and tapping stations are fixed in the horizontal direction. The station spacing and processing position are not adjustable, making it difficult to adapt to the processing of rear fork disc brake seats of different specifications and sizes. The equipment has poor flexibility and is only suitable for batch production of a single type of workpiece.

[0005] 2. The shifting mechanism only moves along a single axis and lacks compensation. It can only achieve linear shifting in the horizontal direction and has no axial compensation, angle fine-tuning, or error correction functions. Rear fork disc brake seats are mostly irregularly shaped welded parts, inherently deformable. Relying solely on a single clamping and positioning process cannot eliminate workpiece and clamping errors, making it difficult to guarantee machining accuracy.

[0006] 3. Insufficient Reliability of Positioning and Clamping: The clamping mechanism only achieves simple clamping and is not optimized for the irregular curved surface structure of the rear fork disc brake seat. The positioning reference is singular, resulting in poor clamping stability. Vibration and displacement are easily generated during machining, affecting the accuracy and flatness of the holes. Furthermore, the clamping position is on the hook 71, too close to the rear fork disc brake seat 72, which will affect machining. Figure 6As shown, for bicycles where the dropout 71 and the rear fork disc brake mount 72 are integrated, this will seriously interfere with normal manufacturing. Summary of the Invention

[0007] The purpose of this invention is to provide a processing device for bicycle rear fork disc brake mounts in order to solve the above-mentioned problems.

[0008] To achieve the above objectives, the present invention specifically adopts the following technical solution: A bicycle rear fork disc brake mount processing device includes a clamping control system. The clamping control system includes an X-axis linear slide rail module installed on the ground, a Y-axis linear slide rail module installed on the X-axis linear slide rail module, a Z-axis linear slide rail module installed on the Y-axis linear slide rail module, a mounting frame installed on the Z-axis linear slide rail module, and a clamping component installed on the outside of the mounting frame. The clamping component can clamp the rear fork from inside the rear fork. The clamping control system has a machining component on its right side. The machining component adopts a wheel design and is equipped with milling cutters, drilling cutters and tapping cutters respectively. The machining component mimics the rotation of a bicycle wheel in the rear fork to achieve tool switching.

[0009] Furthermore, the clamping assembly includes a bracket fixedly mounted on the mounting frame. A cross brace is fixedly mounted on the outer side of the bracket. Two sets of inner support plates are hinged to the cross brace. The two sets of inner support plates can be arranged in a V-shape and can swing synchronously. A telescopic inner top plate is provided on the side of the bracket away from the inner support plates. Four sets of clamping cylinders are fixedly mounted on the top of the upper inner support plate. The four sets of clamping cylinders are symmetrically distributed. Clamping plates are fixedly mounted on the telescopic ends of the clamping cylinders.

[0010] Furthermore, an internal adjusting screw is rotatably installed inside the bracket, extending to the outside. An internal support nut is threaded onto the internal adjusting screw, and two sets of internal support connecting rods are hinged to the outside of the internal support nut. The two sets of internal support connecting rods are respectively hinged to two sets of internal support plates. An internal top nut is threaded onto the internal adjusting screw, and a sliding rod is slidably connected through the inside of the bracket. The sliding rod is used to connect the internal top nut and the internal top plate.

[0011] Furthermore, the inner adjusting screw is provided with two sets of external threads with different thread pitches and opposite directions of rotation. The inner support nut is threaded onto the external thread with a smaller thread pitch, and the inner top nut is threaded onto the external thread with a larger thread pitch. The hinge of the inner support connecting rod and the inner support plate is close to the hinge of the inner support plate and the cross brace.

[0012] Furthermore, an internal drive shaft is rotatably mounted inside the bracket. The internal drive shaft is driven by a servo motor, which is mounted in the mounting frame. An active bevel gear is fixedly mounted on the output end of the internal drive shaft, and a driven bevel gear is fixedly mounted on the internal adjusting screw. The driven bevel gear meshes with the active bevel gear.

[0013] Furthermore, the machining assembly includes a base disposed on the right side of the clamping control system, an extension shaft rotatably mounted on the base, a wheel fixedly mounted on the front side of the extension shaft, milling cutters, drilling cutters and tapping cutters rotatably mounted on the wheel and distributed in a ring, a driven pulley disposed on the back side of the extension shaft, a tilting motor mounted on the base, a driving pulley disposed at the output end of the tilting motor, and the driving pulley being connected to the driven pulley via a transmission belt.

[0014] Furthermore, a machining drive gear is rotatably mounted on the front of the wheel, and the machining drive gear is driven by a machining motor. The milling cutter, drilling cutter and tapping cutter are all equipped with transmission gears, which mesh with the machining drive gear.

[0015] Furthermore, the outer side of the wheel is provided with three sets of positioning sockets in a ring shape, and a positioning cylinder is installed on the base. A positioning pin is fixedly installed on the top of the output end of the positioning cylinder, and the positioning pin can be inserted into the positioning socket.

[0016] Furthermore, the top of the positioning pin is tapered.

[0017] The beneficial effects of this invention are as follows: This invention uses an internal triangular clamping method for the rear fork, which provides high clamping stability and is applicable to different models of bicycle rear forks. At the same time, the pawl and the rear fork disc brake seat area are completely unobstructed, making processing convenient.

[0018] This invention, through the setting of a clamping control system, can adjust the position of the rear fork from the X, Y, and Z axes, and can complete the machining with high precision in conjunction with the machining tool, resulting in high machining accuracy.

[0019] This invention utilizes a wheel-type machining component that mimics the rotation of a bicycle wheel within a rear fork to achieve tool switching. This eliminates the need for multiple machining stations, resulting in a compact structure and high tool switching efficiency, thereby improving overall machining efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the clamping control system structure of the present invention; Figure 3 This is a schematic diagram of the clamping component structure of the present invention; Figure 4 This is a schematic diagram of the internal support plate structure of the present invention; Figure 5 This is a schematic diagram of the processing component structure of the present invention; Figure 6 This is a schematic diagram of the integrated bicycle rear fork structure of the present invention.

[0021] Reference numerals: 1. X-axis linear guide module; 2. Y-axis linear guide module; 3. Z-axis linear guide module; 4. Mounting frame; 5. Clamping assembly; 51. Bracket; 52. Inner drive shaft; 53. Driving bevel gear; 54. Inner adjusting screw; 55. Driven bevel gear; 56. Cross brace; 57. Inner support plate; 571. Clamping cylinder; 572. Clamping plate; 58. Inner support nut; 59. Inner support connecting rod; 510. Inner top nut; 511. Slide... 512. Rod; 6. Inner top plate; 7. Machining assembly; 8. Base; 9. Extension shaft; 10. Wheel; 11. Driven pulley; 12. Tilting motor; 13. Drive pulley; 14. Machining motor; 15. Machining drive gear; 16. Milling cutter; 17. Drilling cutter; 18. Tapping cutter; 19. Positioning cylinder; 20. Positioning pin; 21. Positioning socket; 32. Rear fork; 43. Claw; 54. Rear fork disc brake mount. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] Example 1, as Figures 1-6 As shown, a bicycle rear fork disc brake mount processing device includes a clamping control system. The clamping control system includes an X-axis linear slide rail module 1 installed on the ground, a Y-axis linear slide rail module 2 installed on the X-axis linear slide rail module 1, a Z-axis linear slide rail module 3 installed on the Y-axis linear slide rail module 2, an mounting frame 4 installed on the Z-axis linear slide rail module 3, and a clamping component 5 installed on the outside of the mounting frame 4. The clamping component 5 can clamp the rear fork 7 from inside the rear fork 7. The right side of the clamping control system is equipped with a machining component 6, which adopts a wheel design and is equipped with a milling cutter 69, a drilling cutter 610 and a tapping cutter 611 respectively. The machining component 6 mimics the rotation of a bicycle wheel in the rear fork 7 to achieve tool switching.

[0024] Working steps: The rear fork 7 is fitted onto the clamping assembly 5. The clamping assembly 5 holds the rear fork 7 from inside, with the clamped claws 71 facing the machining assembly 6 without obstruction. Then, the clamping control system controls the rear fork 7 to move towards the machining assembly 6, allowing the machining assembly 6 to be inserted between the two claws 71 like a wheel. First, the milling cutter 69 is rotated to the position closest to the rear fork disc brake seat 72. The structure adjusts the position of the rear fork disc brake seat 72 and the milling cutter 69 through the clamping control system. The milling cutter 69 rotates at high speed. The X-axis linear guide module 1 controls the milling depth, and the Y-axis linear guide module 2... The Z-axis linear guide module 3 controls the milling position to mill the rear fork disc brake seat 72. After milling, the machining component 6 rotates the drilling tool 610 to the position closest to the rear fork disc brake seat 72. The Y-axis linear guide module 2 and the Z-axis linear guide module 3 align the hole with the drilling tool 610, and the X-axis linear guide module 1 controls the drilling depth. After drilling, the machining component 6 rotates the tapping tool 611 to the position closest to the rear fork disc brake seat 72. The Y-axis linear guide module 2 and the Z-axis linear guide module 3 align the hole with the tapping tool 611, and the X-axis linear guide module 1 controls the tapping depth.

[0025] This invention enables rapid processing of rear fork disc brake seats 72 at the same workstation, and adopts an internal clamping method to avoid obstructing the processing. Furthermore, through the cooperation of the clamping control system and the clamping component 5, it can be applied to the processing of rear fork disc brake seats 72 of different bicycle models, with a wide processing range and can be widely promoted.

[0026] Example 2, as Figures 2-4 As shown, a specific structure of a clamping component 5 is provided: The clamping assembly 5 includes a bracket 51 fixedly mounted on the mounting frame 4. A cross brace 56 is fixedly mounted on the outside of the bracket 51. Two sets of inner support plates 57 are hinged to the cross brace 56. The two sets of inner support plates 57 can be arranged in a V-shape and can swing synchronously. A telescopic inner top plate 512 is provided on the side of the bracket 51 away from the inner support plate 57. Four sets of clamping cylinders 571 are fixedly mounted on the top of the upper inner support plate 57. The four sets of clamping cylinders 571 are symmetrically distributed. A clamping plate 572 is fixedly mounted on the telescopic end of each clamping cylinder 571.

[0027] An internal adjusting screw 54 is rotatably mounted inside the bracket 51. The internal adjusting screw 54 extends to the outside and is threaded with an internal support nut 58. Two sets of internal support connecting rods 59 are hinged to the outside of the internal support nut 58. The two sets of internal support connecting rods 59 are respectively hinged to two sets of internal support plates 57. An internal top nut 510 is threaded on the internal adjusting screw 54. A sliding rod 511 is slidably connected through the inside of the bracket 51. The sliding rod 511 is used to connect the internal top nut 510 and the internal top plate 512.

[0028] An inner drive shaft 52 is rotatably mounted inside the bracket 51. The inner drive shaft 52 is driven by a servo motor, which is installed in the mounting frame 4. An active bevel gear 53 is fixedly mounted on the output end of the inner drive shaft 52. A driven bevel gear 55 is fixedly mounted on the inner adjusting screw 54. The driven bevel gear 55 meshes with the active bevel gear 53.

[0029] Clamping steps: At the beginning, the two sets of inner support plates 57 are close to the bracket 51, and the inner top plate 512 is also close to the bracket 51. At this time, the clamping assembly 5 occupies the least space, and the rear fork 7 can be easily fitted onto the clamping assembly 5.

[0030] After the connection is completed, the servo motor is powered on, and the servo motor drives the inner drive shaft 52 to rotate. The inner drive shaft 52 drives the inner adjusting screw 54 to rotate through the driving bevel gear 53 and the driven bevel gear 55. The inner adjusting screw 54 drives the inner support nut 58 to move to the right and drives the inner top nut 510 to move to the left (towards...). Figure 3 Taking the middle position as an example, at this time, the inner support nut 58 causes the two sets of inner support plates 57 to unfold outward through the inner support connecting rod 59. The inner top nut 510 drives the inner top plate 512 away from the bracket 51 through the sliding rod 511 until the inner top plate 512 hits one side of the triangular rear fork 7, and the two sets of inner support plates 57 hit the other two sides respectively. The inner top plate 512 and the two sets of inner support plates 57 form three inner limit points to clamp the rear fork 7 from the inside. Then, the clamping cylinder 571 is controlled to run. The clamping cylinder 571 drives the clamping plate 572 to approach the rear fork 7 and clamp the rear fork 7 in the middle position of the inner support plate 57 to prevent the rear fork 7 from sliding relative to the inner support plate 57. Since the rear fork 7 is a diagonal rod, the setting of two sets of clamping plates 572 on one side can better fix the rear fork 7 and ensure that it will not be displaced during the processing, resulting in high processing accuracy.

[0031] During disassembly, the two sets of inner support plates 57 are tightly attached to the bracket 51, and the inner top plate 512 is also tightly attached to the bracket 51, making it easy to remove the rear fork 7.

[0032] Example 3, based on Example 2, further includes: the inner adjusting screw 54 is provided with two sets of external threads with different thread pitches and opposite directions of rotation; the inner support nut 58 is threadedly connected to the external thread with a smaller thread pitch; the inner top nut 510 is threadedly connected to the external thread with a larger thread pitch; and the hinge of the inner support connecting rod 59 and the inner support plate 57 is close to the hinge of the inner support plate 57 and the cross brace 56.

[0033] With the configuration of this embodiment, the inner support nut 58 only needs to move a short distance to control the inner support plate 57 to unfold to a large angle. Moreover, the inner top nut 510 is threaded onto the external thread with a large thread pitch, which will not affect the extension distance of the inner top plate 512, thereby reducing the length of the inner adjusting screw 54 and making the structure more compact.

[0034] Example 4, as Figure 5As shown, a specific structure of a processing component 6 is provided: The machining assembly 6 includes a base 61 located on the right side of the clamping control system. An extension shaft 62 is rotatably mounted on the base 61. The extension shaft 62, like an axle, reduces the impact on the travel of the rear fork disc brake seat 72. A wheel 63 is fixedly mounted on the front of the extension shaft 62. Milling cutters 69, drilling cutters 610, and tapping cutters 611 are rotatably mounted on the wheel 63 and are arranged in a ring. A driven pulley 64 is provided on the back of the extension shaft 62. A tilting motor 65 is mounted on the base 61. A driving pulley 66 is provided at the output end of the tilting motor 65. The driving pulley 66 is connected to the driven pulley 64 via a transmission belt.

[0035] A machining drive gear 68 is rotatably mounted on the front of the wheel 63. The machining drive gear 68 is driven by a machining motor 67. Transmission gears are provided on the milling cutter 69, the drilling cutter 610 and the tapping cutter 611. The transmission gears mesh with the machining drive gear 68.

[0036] The outer side of the wheel 63 is provided with three sets of positioning sockets 614. A positioning cylinder 612 is installed on the base 61. A positioning pin 613 is fixedly installed on the top of the output end of the positioning cylinder 612. The positioning pin 613 can be inserted into the positioning socket 614.

[0037] The top of the positioning pin 613 is tapered for easy insertion.

[0038] Tool switching steps: Control the retraction of the positioning cylinder 612, which drives the positioning pin 613 to descend, moving the positioning pin 613 away from the positioning socket 614. Then, control the energization of the flip motor 65, which drives the extension shaft 62 to rotate through the drive pulley 66 and the driven pulley 64. The extension shaft 62 drives the wheel 63 to rotate 120°, realizing tool switching. Then, the positioning pin 613 is inserted back into the positioning socket 614 to prevent the wheel 63 from shaking during the cutting process, ensuring high processing stability.

[0039] Meanwhile, through the setting of transmission gears and machining drive gear 68, only one drive is needed to simultaneously control the high-speed rotation of milling cutter 69, drilling cutter 610 and tapping cutter 611, and the cutters that do not participate in machining are in a state far away from the rear fork disc brake seat 72, which does not affect normal machining.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A processing device for a bicycle rear fork disc brake seat, comprising a clamping control system, characterized in that, The clamping control system comprises an X-axis linear slide rail module (1) installed on the ground, an Y-axis linear slide rail module (2) installed on the X-axis linear slide rail module (1), a Z-axis linear slide rail module (3) installed on the Y-axis linear slide rail module (2), an installation frame (4) installed on the Z-axis linear slide rail module (3), and a clamping assembly (5) installed on the outer side of the installation frame (4), wherein the clamping assembly (5) can clamp the rear fork (7) from the inside of the rear fork (7). The right side of the clamping control system is provided with a machining assembly (6) which is designed in a wheel type and is provided with a milling cutter (69), a drilling cutter (610) and a tapping cutter (611) respectively, and the machining assembly (6) imitates the rotation of the bicycle wheel in the rear fork (7) to realize the switching of the cutters.

2. The apparatus according to claim 1, wherein, The clamping assembly (5) comprises a support (51) fixedly installed on the installation frame (4), a cross brace (56) fixedly installed on the outer side of the support (51), two groups of inner support plates (57) hingedly connected to the cross brace (56), the two groups of inner support plates (57) being arranged in a V shape and being capable of synchronous swinging, an inner top plate (512) arranged on the side of the support (51) away from the inner support plates (57) and capable of stretching and retracting, four groups of clamping air cylinders (571) fixedly installed on the top of the upper inner support plate (57), the four groups of clamping air cylinders (571) being symmetrically distributed, and clamping plates (572) fixedly installed on the stretching and retracting ends of the clamping air cylinders (571).

3. The apparatus according to claim 2, wherein, An inner adjusting lead screw (54) is rotatably installed in the support (51) and extends to the outer side, an inner support nut (58) is threadedly connected to the inner adjusting lead screw (54), two groups of inner support connecting rods (59) are hingedly connected to the outer side of the inner support nut (58), the two groups of inner support connecting rods (59) are respectively hingedly connected to the two groups of inner support plates (57), an inner top nut (510) is threadedly connected to the inner adjusting lead screw (54), and a sliding rod (511) penetratingly and slidably connected to the inner adjusting lead screw (54) is arranged in the support (51) and used for connecting the inner top nut (510) and the inner top plate (512).

4. The apparatus according to claim 3, wherein, The inner adjusting lead screw (54) is provided with two groups of outer threads with different thread pitches and opposite rotation directions, the inner support nut (58) is threadedly connected to the outer thread with a small thread pitch, and the inner top nut (510) is threadedly connected to the outer thread with a large thread pitch.

5. The apparatus according to claim 4, wherein, An inner driving shaft (52) is rotatably installed in the support (51) and driven by a servo motor, the servo motor is installed in the installation frame (4), a driving bevel gear (53) is fixedly installed on the output end of the inner driving shaft (52), and a driven bevel gear (55) is fixedly installed on the inner adjusting lead screw (54) and engaged with the driving bevel gear (53).

6. The apparatus according to claim 1, wherein, The machining assembly (6) comprises a base (61) arranged on the right side of the clamping control system, an extension shaft (62) is rotatably arranged on the base (61), a wheel disc (63) is fixedly arranged on the front of the extension shaft (62), a milling cutter (69), a drilling cutter (610) and a tapping cutter (611) are rotatably arranged on the wheel disc (63) and are annularly distributed, a driven pulley (64) is arranged on the back of the extension shaft (62), a turnover motor (65) is arranged on the base (61), a driving pulley (66) is arranged on the output end of the turnover motor (65), and the driving pulley (66) is in transmission connection with the driven pulley (64) through a transmission belt.

7. The apparatus according to claim 6, wherein, A machining driving gear disc (68) is rotatably arranged on the front of the wheel disc (63) and is driven by a machining motor (67), and transmission gears are arranged on the milling cutter (69), the drilling cutter (610) and the tapping cutter (611), and the transmission gears are in mesh with the machining driving gear disc (68).

8. The apparatus according to claim 7, wherein, Three groups of positioning sockets (614) are annularly arranged on the outer side of the wheel disc (63), a positioning cylinder (612) is arranged on the base (61), a positioning bolt (613) is fixedly arranged on the top of the output end of the positioning cylinder (612), and the positioning bolt (613) can be inserted into the positioning socket (614).

9. The apparatus according to claim 8, wherein, The top of the positioning bolt (613) is conically arranged.

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