Bicycle transmission wheel outer circle polishing processing auxiliary fixing device
Patent Information
- Application Number
- CN202522229668.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-22
AI Technical Summary
[0005]为了弥补以上不足，本实用新型提供了自行车传动轮外圆打磨加工辅助固定设备，旨在改善现有技术中直接打磨若缺乏有效定位与夹紧，传动轮会发生偏移，导致打磨轨迹偏离预设路径，造成外圆尺寸偏差，无法保证传动轮的加工精度的问题
1、本实用新型中，转座的圆槽提供边缘支撑，夹持臂绕固定板转动并贴合传动轮，螺栓通过紧固片施加夹紧力，配合轴承实现角度调整与再次固定，实现传动轮在打磨过程中的定位与加工，防止打磨偏移，保障加工精度，提升打磨效率与产品质量。
Smart Images
Figure CN224780077U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bicycle drive wheel processing equipment, and in particular to auxiliary fixing equipment for grinding and processing the outer circle of bicycle drive wheels. Background Technology
[0002] The drivetrain of a bicycle is the driving component, consisting of the chainring and freewheel. The pedals drive the chainring, and the chain transmits power to the rear freewheel, enabling the bicycle to move forward. Different sizes and speed configurations affect riding speed and the amount of effort required.
[0003] The outer diameter of bicycle drive wheels is ground to obtain a high-precision round and smooth surface, which can reduce chain wear, reduce riding noise, improve power transmission efficiency, remove burrs and stress concentration, and enhance the strength and durability of the wheel teeth.
[0004] During the manufacturing process of bicycle drive wheels, burrs are generated on the outer surface of the drive wheel due to metal cutting and friction. This affects the surface smoothness and assembly accuracy, reducing product quality. In existing technologies, grinding the outer wall of the drive wheel can remove burrs and improve surface roughness, thereby enhancing the product's appearance and performance. However, in actual use, if direct grinding lacks effective positioning and clamping, the drive wheel will shift, causing the grinding trajectory to deviate from the preset path, resulting in deviations in the outer circumference dimensions and making it impossible to guarantee the machining accuracy of the drive wheel. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides an auxiliary fixing device for grinding the outer diameter of bicycle drive wheels. It aims to improve the problem in the prior art where direct grinding without effective positioning and clamping causes the drive wheel to shift, resulting in the grinding trajectory deviating from the preset path, causing deviation in the outer diameter dimensions, and failing to guarantee the processing accuracy of the drive wheel.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bicycle drive wheel outer circle grinding and fixing auxiliary device, including a bent tube, a fixing plate fixedly connected to the inner side of the bent tube, a fixing mechanism provided on the inner side of the fixing plate, the fixing mechanism being used to fix the bicycle drive wheel, and an installation mechanism provided at the bottom of the bent tube, the installation mechanism being used to support the device; The fixing mechanism includes a rotating base, the front side of which is fixedly connected to the rear side of a fixing plate. A bearing is fixedly connected to the inner side of the fixing plate. A rotating shaft is fixedly connected to the inner wall of the bearing. A filling ring is fixedly connected to the outer wall of the rotating shaft. A limit component is provided on the outer wall of the rotating shaft.
[0007] As a further description of the above technical solution: The installation mechanism includes two front diagonal rods, the top ends of which are fixedly connected to the left and right ends of the front bottom of the bend, respectively. Rear diagonal rods are fixedly connected to the left and right ends of the rear bottom of the bend. Support plates are fixedly connected to the bottom of the two front diagonal rods and the bottom of the two rear diagonal rods. The edges of the multiple support plates are chamfered.
[0008] As a further description of the above technical solution: The bend is made of 316L stainless steel, and the bottom ends on both sides of the bend are rounded.
[0009] As a further description of the above technical solution: The limiting assembly includes a limiting inner ring, the inner side of which is fixedly connected to the rear side of the outer wall of the rotating shaft, and a limiting outer ring is fixedly connected to the front side of the outer wall of the rotating shaft.
[0010] As a further description of the above technical solution: The front side of the rotary base has a circular groove, and the rear edge of the rotary base is rounded.
[0011] As a further description of the above technical solution: The fixing mechanism also includes two clamping arms, the tops of which are rotatably connected to the top left and right sides of the fixing plate, respectively, and fastening plates are fixedly connected to the bottom front sides of the two clamping arms.
[0012] As a further description of the above technical solution: Both clamping arms have rubber-edged bottoms, and both fastening plates have bolts threaded to their front sides.
[0013] As a further description of the above technical solution: Two arc grooves are formed on the front side of the fixing plate, and the two arc grooves are symmetrically distributed along the central axis of the fixing plate.
[0014] This utility model has the following beneficial effects: 1. In this utility model, the circular groove of the rotating base provides edge support, the clamping arm rotates around the fixed plate and fits the transmission wheel, the bolt applies clamping force through the fastening plate, and the bearing is used to realize angle adjustment and re-fixing, so as to realize the positioning and processing of the transmission wheel in the grinding process, prevent grinding deviation, ensure processing accuracy, and improve grinding efficiency and product quality.
[0015] 2. In this utility model, the front and rear inclined rods extend outward from the bottom of the bend to form a support structure. The support plate contacts the placement surface to increase the contact area. The front and rear inclined rods distribute the weight to the support plate and then transfer it to the placement surface. During grinding, the local force is dispersed and vibration is resisted. The support plate prevents displacement through friction, avoids deformation of the bend due to concentrated load, achieves stable placement of the equipment, and prevents the equipment from shaking and affecting the processing accuracy. Attached Figure Description
[0016] Figure 1 A perspective view of the auxiliary fixing device for grinding and fixing the outer circle of the bicycle drive wheel proposed in this utility model; Figure 2 This is a front view of the auxiliary fixing device for grinding the outer circle of a bicycle drive wheel proposed in this utility model; Figure 3 This is a schematic diagram of the bent tube structure in the auxiliary fixing device for grinding the outer circle of the bicycle drive wheel proposed in this utility model; Figure 4 This is a split view of the clamping arm in the auxiliary fixing device for grinding the outer circle of the bicycle drive wheel proposed in this utility model; Figure 5 This is an exploded view of the rotating shaft in the auxiliary fixing device for grinding the outer circle of the bicycle drive wheel proposed in this utility model.
[0017] Legend: 1. Bend; 2. Fixing plate; 3. Fixing mechanism; 31. Rotary seat; 32. Bearing; 33. Rotating shaft; 34. Filler ring; 35. Limiting assembly; 351. Inner limiting ring; 352. Outer limiting ring; 36. Circular groove; 37. Clamping arm; 38. Fastening plate; 39. Bolt; 4. Mounting mechanism; 41. Front diagonal bar; 42. Rear diagonal bar; 43. Support plate; 5. Circular groove. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Reference Figures 4-5This utility model provides an embodiment of an auxiliary fixing device for grinding and fixing the outer circle of a bicycle drive wheel, including a bent pipe 1. The bent pipe 1 is made of 316L stainless steel. The bottom ends of the left and right sides of the bent pipe 1 are rounded. A fixing plate 2 is fixedly connected to the inner side of the bent pipe 1. Two arc grooves 5 are opened on the front side of the fixing plate 2. The two arc grooves 5 are symmetrically distributed along the central axis of the fixing plate 2. A fixing mechanism 3 is provided on the inner side of the fixing plate 2. The fixing mechanism 3 is used to fix the drive wheel of the bicycle. An installation mechanism 4 is provided at the bottom of the bent pipe 1. The installation mechanism 4 is used to support the device. The fixing mechanism 3 includes a rotating base 31, the front side of which is fixedly connected to the rear side of the fixing plate 2. A bearing 32 is fixedly connected to the inner side of the fixing plate 2. A rotating shaft 33 is fixedly connected to the inner wall of the bearing 32. A filling ring 34 is fixedly connected to the outer wall of the rotating shaft 33. A limiting component 35 is provided on the outer wall of the rotating shaft 33. The limiting component 35 includes a limiting inner ring 351, the inner side of which is fixedly connected to the rear side of the outer wall of the rotating shaft 33. A limiting outer ring 352 is fixedly connected to the front side of the outer wall of the rotating shaft 33. A circular groove 36 is provided on the front side of the rotating base 31. The rear edge of the rotating base 31 is rounded. The fixing mechanism 3 also includes two clamping arms 37. The tops of the two clamping arms 37 are rotatably connected to the top left and right sides of the fixing plate 2, respectively. Fastening plates 38 are fixedly connected to the bottom of the front side of the two clamping arms 37. The bottoms of the two clamping arms 37 are all rubber-edged. Bolts 39 are threadedly connected to the front side of the two fastening plates 38. Specifically, the bending pipe 1 provides an overall support frame, the fixing plate 2 supports the fixing mechanism 3, the fixing mechanism 3 realizes the positioning and clamping of the transmission wheel, and the mounting mechanism 4 ensures the stable placement of the equipment, together providing fixed assistance for the grinding of the outer circle of the transmission wheel; The front side of the rotating seat 31 of the fixing mechanism 3 is fixed to the rear side of the fixing plate 2. The inner side of the fixing plate 2 is fixed to the bearing 32. The inner wall of the bearing 32 is fixed to the rotating shaft 33. The outer wall of the rotating shaft 33 is fixed to the filling ring 34. When fixing the transmission wheel, the transmission wheel is first sleeved on the outer wall of the rotating shaft 33. The filling ring 34 fills the gap between the inner hole of the transmission wheel and the rotating shaft 33 to prevent the transmission wheel from shaking on the rotating shaft 33. At the same time, the limiting inner ring 351 on the rear side of the outer wall of the rotating shaft 33 and the limiting outer ring 352 on the front side axially limit the transmission wheel from the front and rear sides to prevent the transmission wheel from moving along the axis of the rotating shaft 33, thereby achieving the positioning of the transmission wheel. The circular groove 36 on the front side of the rotating base 31 is adapted to the rear edge of the transmission wheel. The rear edge of the rotating shaft 33 is embedded in the circular groove 36. When the two clamping arms 37 are rotated, the tops of the two clamping arms 37 rotate around the top left and right sides of the fixed plate 2 respectively, so that the bottom of the clamping arms 37 moves closer to the transmission wheel until the bottom of the clamping arms 37 is in contact with the outer wall of the transmission wheel. The rubber edge structure at the bottom of the clamping arms 37 directly contacts the transmission wheel to avoid scratching the surface of the transmission wheel during clamping. Rotate the bolt 39 on the front side of the fastening plate 38. The bolt 39 moves inward along the threaded hole of the fastening plate 38 until the end of the bolt 39 abuts against the fixing plate 2. Through the squeezing action of the two bolts 39, the fixing plate 2 is clamped and fixed from the left and right sides. With the axial limiting of the inner limiting ring 351 and the outer limiting ring 352 and the radial limiting of the filling ring 34, the transmission wheel is fixed in all directions. When the angle of the transmission wheel needs to be adjusted, it can be achieved by rotating the shaft 33. The shaft 33 rotates on the inner wall of the bearing 32, driving the transmission wheel to rotate synchronously. The bearing 32 reduces the frictional resistance when the shaft 33 rotates, making the adjustment of the transmission wheel angle smoother. After adjusting to the target angle, tighten the bolt 39 again to ensure that the transmission wheel remains fixed during the grinding process, avoid angle deviation from affecting the grinding accuracy, achieve stable fixation of the transmission wheel during the grinding process, and ensure the smooth progress of the grinding operation.
[0020] Reference Figures 1-3 The installation mechanism 4 includes two front inclined rods 41. The top ends of the two front inclined rods 41 are fixedly connected to the left and right ends of the front bottom of the bend 1, respectively. The left and right ends of the rear bottom of the bend 1 are fixedly connected to rear inclined rods 42. The bottom of the two front inclined rods 41 and the bottom of the two rear inclined rods 42 are fixedly connected to support plates 43. The edges of the multiple support plates 43 are all chamfered. Specifically, the installation mechanism 4 supports the equipment by cooperating with the front diagonal rod 41, the rear diagonal rod 42 and the support plate 43. Before the equipment is put into use, the front diagonal rod 41 and the rear diagonal rod 42 extend outward from the bottom of the front and rear sides of the bend 1 to form a symmetrical multi-point support structure. The support plate 43 is in direct contact with the placement surface. Its planar structure increases the contact area with the placement surface, preventing the equipment from sinking into the placement surface and sliding due to the small contact area. The chamfering treatment of the edge of the support plate 43 prevents the sharp edge from scratching and damaging the placement surface during assembly and use, reduces the damage caused by the edge of the support plate 43 due to bumps, and achieves the stability of the initial placement of the equipment and ensures the safety of use. After the equipment is fully assembled, the installation mechanism 4 undertakes the supporting connection function between the equipment and the placement surface, distributing the overall weight of the equipment to the support plate 43, and then from the support plate 43 to the placement surface, avoiding localized stress concentration that could cause the equipment to tilt and shift, ensuring the structural stability of the bend 1 as the overall support frame, and thus maintaining the stability of the installation position of the fixing plate 2 and the fixing mechanism 3, providing a reliable foundation for the subsequent fixing of the transmission wheel by the fixing mechanism 3; During the grinding process of the transmission wheel, when the fixing mechanism 3 clamps and fixes the transmission wheel, a local force will be generated. The support structure formed by the front inclined rod 41 and the rear inclined rod 42 can distribute this force to multiple support points to prevent excessive local force from causing equipment deformation. When the rotating shaft 33 drives the transmission wheel to adjust the angle, the equipment will generate a certain vibration. The symmetrical support structure of the front inclined rod 41 and the rear inclined rod 42 can effectively resist vibration interference and maintain the overall balance of the equipment. The friction between the support plate 43 and the placement surface prevents the equipment from undergoing horizontal displacement, ensuring that the fixing accuracy of the transmission wheel by the fixing mechanism 3 is not affected by the shaking of the equipment. The distributed force of the front diagonal bar 41 and the rear diagonal bar 42 can prevent the bottom of the bend from deforming due to the direct bearing of concentrated load, thus ensuring the structural stability of the bend and ensuring that the fixing plate 2 and the fixing mechanism 3 are always in the preset working position and will not shift due to the deformation of the bend.
[0021] Working principle: The equipment is placed in the preset grinding operation position through the installation mechanism 4. The top ends of the two front inclined rods 41 of the installation mechanism 4 are fixed to the left and right ends of the bottom front side of the bend 1, and the top ends of the two rear inclined rods 42 are fixed to the left and right ends of the bottom rear side of the bend 1. The front inclined rods 41 and the rear inclined rods 42 extend outward from the bottom front and rear sides of the bend 1 in an inclined manner, forming a symmetrical multi-point support structure. The support plates 43 fixed at the bottom of the front inclined rods 41 and the rear inclined rods 42 are in direct contact with the placement surface. The planar structure of the support plates 43 increases the contact area with the placement surface, preventing the equipment from sinking into the placement surface due to the small contact area and from sliding in subsequent operations. The chamfering treatment of the edge of the support plates 43 can prevent the sharp edges from scratching the operator's hands during assembly and use, and also prevent damage to the surface of the placement surface, thus completing the stable placement of the equipment and providing a foundation for the subsequent fixing of the transmission wheel. Then, the transmission wheel is fixed. The center hole of the bicycle transmission wheel is aligned with the shaft 33 of the fixing mechanism 3. The transmission wheel is sleeved on the outer wall of the shaft 33. The filling ring 34 fixed on the outer wall of the shaft 33 fits against the inner wall of the center hole of the transmission wheel, filling the gap between the inner hole of the transmission wheel and the shaft 33, and preventing the transmission wheel from radially shaking on the shaft 33. At the same time, the limiting inner ring 351 fixed on the rear side of the outer wall of the shaft 33 and the limiting outer ring 352 fixed on the front side fit against the front and rear sides of the transmission wheel, respectively, and axially limit the transmission wheel from the front and rear sides to prevent the transmission wheel from moving back and forth along the axis of the shaft 33. The rear edge of the transmission wheel is embedded in the circular groove 36 opened on the front side of the rotating seat 31. The circular groove 36 matches the rear edge of the transmission wheel, further limiting the radial displacement of the transmission wheel and realizing the positioning of the transmission wheel. Next, rotate the two clamping arms 37. The tops of the two clamping arms 37 are connected to the top left and right sides of the fixed plate 2 via rotating connectors. The clamping arms 37 rotate around the connection point toward the transmission wheel, so that the bottom of the clamping arms 37 gradually approaches the outer wall of the transmission wheel until the bottom of the clamping arms 37 is completely in contact with the outer wall of the transmission wheel. The rubber edge structure used at the bottom of the clamping arms 37 directly contacts the surface of the transmission wheel, avoiding scratches and damage to the surface of the transmission wheel caused by rigid clamping. Then, use a tool to rotate the bolt 39 connected to the thread on the front side of the fastening plate 38. The bolt 39 moves inward along the threaded hole on the fastening plate 38 until the end of the bolt 39 tightly abuts against the outer wall of the transmission wheel. Through the symmetrical squeezing action of the two bolts 39, clamping force is applied to the transmission wheel from the left and right sides. With the axial limiting of the inner limiting ring 351 and the outer limiting ring 352 and the radial limiting of the filling ring 34, the transmission wheel is fixed. If the grinding angle of the transmission wheel needs to be adjusted during the grinding process, rotate the shaft 33 by hand. The shaft 33 is connected to the fixed plate 2 through the bearing 32. The shaft 33 rotates on the inner wall of the bearing 32, which drives the transmission wheel sleeved on the shaft 33 to rotate synchronously. The rolling structure of the bearing 32 reduces the frictional resistance between the shaft 33 and the fixed plate 2 when rotating, making the adjustment of the transmission wheel angle smoother. After adjusting to the target grinding angle, tighten the bolt 39 again to increase the clamping force on the transmission wheel and ensure that the transmission wheel remains fixed in the subsequent grinding process to avoid angle deviation affecting the grinding accuracy. During the grinding operation, the force generated by the contact between the grinding tool and the transmission wheel is transmitted to the fixing mechanism 3. The support structure formed by the front inclined bar 41 and the rear inclined bar 42 of the mounting mechanism 4 disperses this local force to the four support plates 43, and then transmits it to the placement surface, preventing excessive local force from causing deformation and tilting of the equipment. At the same time, the vibration generated by grinding is transmitted to the mounting mechanism 4 through the bent pipe 1. The symmetrical support structure of the front inclined bar 41 and the rear inclined bar 42 can effectively resist vibration interference and maintain the overall balance of the equipment. The friction between the support plates 43 and the placement surface prevents the equipment from undergoing horizontal displacement. Under the action of dispersing force and resisting vibration, the bent pipe 1 maintains structural stability, ensuring that the fixing plate 2 and the fixing mechanism 3 are always in the preset working position and will not shift due to deformation of the bent pipe 1.
[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A grinding and fixing auxiliary device for the outer circle of a bicycle drive wheel, comprising a bending pipe (1), characterized in that: A fixing plate (2) is fixedly connected to the inner side of the bend (1), and a fixing mechanism (3) is provided on the inner side of the fixing plate (2). The fixing mechanism (3) is used to fix the drive wheel of the bicycle. An installation mechanism (4) is provided at the bottom of the bend (1). The installation mechanism (4) is used to support the equipment. The fixing mechanism (3) includes a rotating seat (31), the front side of which is fixedly connected to the rear side of the fixing plate (2), a bearing (32) is fixedly connected to the inner side of the fixing plate (2), a rotating shaft (33) is fixedly connected to the inner wall of the bearing (32), a filling ring (34) is fixedly connected to the outer wall of the rotating shaft (33), and a limit component (35) is provided on the outer wall of the rotating shaft (33).
2. The auxiliary fixing device for grinding and fixing the outer circle of a bicycle drive wheel according to claim 1, characterized in that: The installation mechanism (4) includes two front diagonal rods (41), the top ends of the two front diagonal rods (41) are fixedly connected to the left and right ends of the front bottom of the bend (1), and the left and right ends of the rear bottom of the bend (1) are fixedly connected to rear diagonal rods (42). The bottom of the two front diagonal rods (41) and the bottom of the two rear diagonal rods (42) are fixedly connected to support plates (43), and the edges of the multiple support plates (43) are all chamfered.
3. The auxiliary fixing device for grinding and fixing the outer circle of a bicycle drive wheel according to claim 1, characterized in that: The bend (1) is made of 316L stainless steel, and the bottom ends of the left and right sides of the bend (1) are rounded.
4. The auxiliary fixing device for grinding and fixing the outer circle of a bicycle drive wheel according to claim 1, characterized in that: The limiting component (35) includes a limiting inner ring (351), the inner side of which is fixedly connected to the rear side of the outer wall of the rotating shaft (33), and the front side of the outer wall of the rotating shaft (33) is fixedly connected to a limiting outer ring (352).
5. The auxiliary fixing device for grinding and fixing the outer circle of a bicycle drive wheel according to claim 1, characterized in that: The front side of the rotating base (31) is provided with a circular groove (36), and the rear edge of the rotating base (31) is rounded.
6. The auxiliary fixing device for grinding and fixing the outer circle of a bicycle drive wheel according to claim 1, characterized in that: The fixing mechanism (3) also includes two clamping arms (37), the tops of the two clamping arms (37) are rotatably connected to the top left and right sides of the fixing plate (2), and fastening plates (38) are fixedly connected to the bottom front side of the two clamping arms (37).
7. The auxiliary fixing device for grinding and fixing the outer circle of a bicycle drive wheel according to claim 6, characterized in that: The bottom of both clamping arms (37) is made of rubber edging, and the front of both fastening plates (38) is threaded with bolts (39).
8. The auxiliary fixing device for grinding and fixing the outer circle of a bicycle drive wheel according to claim 1, characterized in that: Two arc grooves (5) are provided on the front side of the fixing plate (2), and the two arc grooves (5) are symmetrically distributed along the central axis of the fixing plate (2).