Handlebar drilling tool
Patent Information
- Application Number
- CN202522045402.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-09-23
AI Technical Summary
[0004]本实用新型提供车把手钻孔工装，可以解决现有技术中的钻孔工装无法对不同直径规格的把手实现固定夹持，在切换加工产品时，需频繁更换工装夹具来适配不同直径的把手，操作繁琐，通用性差的问题
适配多直径规格把手，提升工装通用性。其定位板、定位块用于对车把手的一面限位，再利用第一气缸驱动压紧板将车把手的把手段压紧在定位块上，配合端部限位组件将把手段的端部限位，从而实新整个车把手的固定；然后由红外线测距传感器测定压紧板表面与传感器测头之间的距离，并利用已知的定位块和红外线测距传感器之间的距离减去红外线测距传感器测头与压紧板之间的距离以及减去压紧板的厚度，就能够得到被夹持在压紧板与定位块之间的把手段的直径，控制器即可控制伺服电缸的伸缩杆伸出，而伺服电缸伸缩杆端部钻模上的导向孔中心点与定位块靠向压紧板的所在端面位于同一平面上，因此，伺服电缸的伸缩杆只需伸出前面测得的把手段的直径的一半距离，导向孔就能够准确的垂直对准把手段的直径方向，在后续钻孔工序时，能够准确引导钻头从把手段的直径方向钻穿，且随着把手段直径的变大或变小，均能通过红外线测距传感器所测得的压紧板的距离变化来跟随调整伺服电缸伸缩杆伸出的距离，来保证引导孔始终能悬于把手段杆部上方的中心点上，相较于传统工装需针对特定把手段的直径定制夹具的设计，该工装无需更换任何夹持部件即可适配多种规格产品，避免在切换加工产品时需频繁更换工装夹具的繁琐步骤，极大提升了工装适用范围加工可靠性，也降低了使用多套专用夹具的制造成本。
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Figure CN224725514U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of motorcycle parts processing equipment, specifically to a tooling for drilling holes in handlebars. Background Technology
[0002] As a core control component, motorcycle handlebars require drilling holes in specific locations to install various accessories. The drilling accuracy directly affects the assembly stability of the components and riding safety. Excessive hole diameter deviation can cause accessories to loosen, while hole position misalignment may interfere with cable routing or even weaken the structural strength of the handlebars. Therefore, the drilling process requires specialized tooling to achieve precise positioning and stable clamping.
[0003] Currently, most motorcycle handlebars are made of aluminum alloy or steel tube and come in various structural forms, such as straight handlebars, curved handlebars, and variable diameter handlebars. The length, diameter, curvature, and drilling position of handlebars vary significantly between different models, which places higher demands on the adaptability and versatility of drilling tools. Existing motorcycle handlebar drilling fixtures are generally dedicated fixtures designed for a single model. They use a fixed clamp to hold the handlebar and a pre-set drill bushing to position the hole. While this can meet the drilling accuracy requirements of a specific handlebar specification, it cannot drill through the diameter of the handlebar steel tube when producing handlebars of different diameters. Therefore, it is necessary to frequently change the fixture to adapt to handlebar steel tubes of different diameters. This is not only cumbersome to operate and has poor versatility, but it also cannot meet the production needs of multiple specifications of products, thus reducing production efficiency. Utility Model Content
[0004] This utility model provides a tooling for drilling handlebars, which can solve the problem that existing drilling tooling cannot fix handlebars of different diameters, and that when switching products, tooling fixtures need to be frequently changed to adapt to handlebars of different diameters, which is cumbersome and has poor versatility.
[0005] This application provides the following technical solution: a handlebar drilling fixture, including a base plate, and a positioning plate, a positioning block, a rod limiting assembly, an end limiting assembly, and a drilling mold limiting assembly, all fixed on the base plate; The rod limiting assembly includes a mounting plate fixed to the base plate, a first cylinder fixed to the mounting plate, and a clamping plate fixed to the end of the telescopic rod of the first cylinder. The clamping plate and the positioning block are arranged opposite to each other. The infrared ranging sensor is fixed to the mounting plate, and the laser of the infrared ranging sensor is perpendicularly irradiated onto the clamping plate. It also includes a controller, which is electrically connected to the infrared ranging sensor and the servo cylinder. The controller is used to control the extension distance of the servo cylinder according to the measured distance signal of the infrared ranging sensor. The drilling die limiting assembly includes a servo electric cylinder fixed on the base plate and a drilling die fixed to the end of the telescopic rod of the servo electric cylinder. The drilling die is provided with a guide hole, and the end face of the positioning block that is close to the clamping plate is on the same plane as the center point of the guide hole.
[0006] Beneficial effects: It adapts to handlebars of various diameters, improving the versatility of tooling. Its positioning plate and positioning block limit one side of the handlebar. Then, the first cylinder drives the clamping plate to press the handlebar's handle onto the positioning block. The end-limiting component further limits the end of the handlebar, thus securing the entire handlebar. Next, an infrared distance sensor measures the distance between the clamping plate surface and the sensor probe. By subtracting the distance between the infrared distance sensor probe and the clamping plate, and subtracting the thickness of the clamping plate, from the known distance between the positioning block and the infrared distance sensor, the diameter of the handlebar clamped between the clamping plate and the positioning block can be obtained. The controller then controls the extension rod of the servo cylinder to extend. Since the center point of the guide hole on the drill bit at the end of the servo cylinder extension rod is on the same plane as the end face of the positioning block near the clamping plate, the extension rod of the servo cylinder only... The guide hole needs to extend by half the diameter of the handle as measured earlier. This ensures that the guide hole is accurately aligned perpendicularly with the diameter of the handle. During subsequent drilling, it can accurately guide the drill bit to drill through the handle from the diameter direction. As the diameter of the handle increases or decreases, the distance of the clamping plate measured by the infrared distance sensor can be used to adjust the extension distance of the servo electric cylinder telescopic rod, ensuring that the guide hole is always suspended at the center point above the handle rod. Compared to traditional tooling that requires custom fixtures for specific handle diameters, this tooling can adapt to various product specifications without changing any clamping components. This avoids the cumbersome steps of frequently changing tooling fixtures when switching products, greatly improving the applicability and processing reliability of the tooling, and reducing the manufacturing cost of using multiple sets of special fixtures.
[0007] Furthermore, the base plate is right-angled, and there are two sets of each of the positioning plate, positioning block, rod limiting component, end limiting component and drilling mold limiting component, which are symmetrically arranged with respect to the fold line at the right-angle corner of the base plate.
[0008] Beneficial effects: The components on the right-angled base plate are symmetrically distributed in two groups about the right-angled corner line. This is to adapt to the shape of the motorcycle handlebars, ensure that the handlebars can be placed in the placement positions of each component, and ensure the accuracy of the handlebar positioning.
[0009] Furthermore, the end limiting component is positioned near the positioning plate, and the end limiting component and the rod limiting component are positioned perpendicular to each other.
[0010] Beneficial effects: The end limiting component is close to the positioning plate and perpendicular to the rod limiting component, which can form multi-dimensional limiting from the axial and radial directions. It can accurately position the end of the handle to prevent it from moving around, and work with the rod component to firmly clamp handles of different diameters. There is no need to change the fixture and the machining accuracy is guaranteed.
[0011] Furthermore, the end limiting assembly includes a second cylinder fixed to the base plate and a clamping plate fixed to the end of the telescopic rod of the second cylinder, the clamping plate being arranged perpendicularly to the positioning plate.
[0012] Beneficial effects: The second cylinder drives the clamping plate to precisely clamp the end of the handle axially. Combined with the vertical layout of the clamping plate of the first cylinder, it can firmly clamp handles of multiple diameters, ensuring that the handle is not pried during drilling, and greatly improving the positioning accuracy and stability during processing.
[0013] Furthermore, it also includes a bend limiting assembly fixed at the right-angle corner of the base plate. The bend limiting assembly includes a rear plate fixed to the base plate, a central shaft slidably connected to the rear plate, a baffle fixed to the tail end of the central shaft, a spring passing through the central shaft rod, and a front plate fixed to the end of the central shaft. The spring is located between the front plate and the rear plate, and the bottom of the front plate can slide relative to the base plate.
[0014] Beneficial effects: Because the bend of the handlebars curves upward relative to the handlebars and its diameter is slightly larger than the handlebars, it is heavier. Therefore, when the handlebars are placed on the base plate, the bend is prone to drooping downwards due to gravity, causing the handlebars to tilt up. This affects the positioning of the rod limiting components and the end limiting components. Therefore, an elastic limiting structure is formed by the rear plate, the spring-loaded bottom bracket, and the sliding front plate. When the handlebars are placed on the base plate, the spring force allows the surface of the front plate to initially limit the bend by resisting it, preventing the handlebars from tilting up. The subsequent rod limiting components and end limiting components then fix the handlebars in place. At the same time, the elasticity of the spring allows the position of the front plate to be adjusted according to the bend diameter, improving adaptability and versatility, and enhancing overall positioning stability. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 For this Figure 1 An enlarged view of one section of the midsole plate. Detailed Implementation
[0017] The following detailed description illustrates the specific implementation method: The markings in the accompanying drawings include: base plate 1, positioning plate 2, servo electric cylinder 3, positioning block 4, handle 5, elbow section 6, front plate 7, spring 8, rear plate 9, central shaft 10, baffle 11, mounting plate 13, infrared distance sensor 14, first cylinder 15, pressing plate 16, drill jig 17, clamping plate 18, and second cylinder 19.
[0018] Example 1 like Figure 1 and Figure 2 As shown, the handlebar drilling fixture includes a base plate 1, and positioning plates 2, positioning blocks 4, rod limiting components, end limiting components, drilling mold limiting components, and elbow limiting components, all fixed on the base plate 1.
[0019] like Figure 1 As shown, the base plate 1 is right-angled. The positioning plate 2, positioning block 4, rod limiting assembly, end limiting assembly, and drilling mold limiting assembly are each provided in two sets, symmetrically arranged along the right-angled corner of the base plate 1. The symmetrical distribution of the components on the right-angled base plate 1 in two sets along the right-angled corner is to adapt to the shape of the motorcycle handlebars, ensuring that the handlebars can be placed in their respective positions and guaranteeing accurate handlebar positioning.
[0020] The rod limiting assembly includes a mounting plate 13 welded and fixed to the base plate 1, a first cylinder 15 screwed and fixed to the mounting plate 13, and a clamping plate 16 threaded and fixed to the end of the telescopic rod of the first cylinder 15. The clamping plate 16 and the positioning block 4 are arranged opposite to each other. The infrared ranging sensor 14 is threaded and fixed to the mounting plate 13, and the laser of the infrared ranging sensor 14 is perpendicularly irradiated onto the clamping plate 16. The device also includes a PLC controller, which is electrically connected to the infrared ranging sensor 14 and the servo cylinder 3. The PLC controller is used to control the extension distance of the telescopic rod of the servo cylinder 3 according to the measured distance signal of the infrared ranging sensor 14.
[0021] An end-limiting component is positioned near one end of the positioning plate 2, and is perpendicular to the rod-limiting component. The end-limiting component includes a second cylinder 19 screwed onto the base plate 1 and a clamping plate 18 threaded onto the end of the telescopic rod of the second cylinder 19. The clamping plate 18 is perpendicular to the positioning plate 2. The second cylinder 19 drives the clamping plate 18 to precisely clamp the end of the handle 5 axially. Combined with the vertical arrangement of the clamping plate 16 of the first cylinder 15, this securely holds multi-diameter handles, preventing prying of the handle 5 during drilling and significantly improving positioning accuracy and stability during machining. The bottom surfaces of both the clamping plate 18 and the clamping plate 16 are slidably connected to the upper surface of the base plate 1.
[0022] like Figure 1As shown, the drilling mold limiting assembly includes a servo electric cylinder 3 fixed to the base plate 1 with screws and a drilling mold 17 fixed to the end of the telescopic rod of the servo electric cylinder 3 with threads. The drilling mold 17 is located above the handle 5, so when the telescopic rod of the servo electric cylinder 3 extends, the drilling mold 17 will not interfere with the handle 5. The drilling mold 17 is provided with a guide hole, and the end face of the positioning block 4 that is close to the pressure plate 16 is on the same plane as the center point of the guide hole.
[0023] The elbow limiting assembly includes a rear plate 9 welded and fixed to the base plate 1, a central shaft 10 slidably connected to the rear plate 9, a baffle 11 threadedly fixed to the tail end of the central shaft 10, a spring 8 passing through the rod of the central shaft 10, and a front plate 7 threadedly fixed to the end of the central shaft 10. The spring 8 is located between the front plate 7 and the rear plate 9. The bottom of the front plate 7 can slide relative to the base plate 1. The baffle 11 is used to prevent the central shaft 10 from coming off the rear plate 9.
[0024] The usage method of this tooling is as follows: First, the handlebars are placed on the base plate 1, with one side of the handlebar handles 5 pressed against the end faces of the positioning plate 2 and the positioning block 4. Simultaneously, the front plate 7 provides initial restraint on the bend section 6, preventing the upward-curved bend section 6 from falling downwards due to gravity. After the handlebars are placed, the first cylinder 15 and the second cylinder 19 are activated sequentially, causing the clamping plate 16 to press the handlebar handles 5 against the positioning block 4. The height of the clamping plate 16 is greater than the diameter of the handlebar handles 5 to ensure complete clamping. The abutment plate 18 presses against the end face of the handlebar handles 5, achieving overall handlebar positioning. Then, the PLC controller controls the infrared distance sensor 14 to measure the distance between the surface of the clamping plate 16 and the sensor probe. Using the pre-measured installation distance between the end face of the positioning block 4 and the position of the infrared distance sensor 14 probe, the distance between the infrared distance sensor and the position of the infrared distance sensor is subtracted. The diameter of the handlebar 5, which is clamped between the pressure plate 16 and the positioning block 4, can be obtained by subtracting the previously measured thickness of the pressure plate 16 from the distance between the probe 14 and the clamping plate 16. Then, the PLC controller can control the extension rod of the servo cylinder 3 to extend. Since the center point of the guide hole on the drill jig 17 at the end of the extension rod of the servo cylinder 3 is on the same plane as the end face of the positioning block 4 that is close to the pressure plate 16, the extension rod of the servo cylinder 3 only needs to extend half the diameter of the handlebar 5 measured earlier. The guide hole can then be accurately aligned vertically with the diameter direction of the handlebar 5. In the subsequent drilling process, the drill bit can be accurately guided to drill through the diameter direction of the handlebar 5. During drilling, the drill bit can be controlled to only drill through the outer wall of the handlebar 5. After drilling is completed, the servo cylinder 3, the first cylinder 15 and the second cylinder 19 are reset in sequence, and the handlebar can be removed. When switching between different diameter handlebars, as the diameter of the handlebar 5 increases or decreases, the distance of the extension rod of the servo cylinder 3 can be adjusted by measuring the distance of the clamping plate 16 through the infrared distance sensor 14. This ensures that the guide hole is always suspended at the center point above the handlebar 5 rod. Compared with traditional tooling that requires custom fixtures for specific handlebar 5 diameters, this tooling can adapt to various product specifications without changing any clamping components. This reduces the tedious steps of frequently changing tooling fixtures when switching between processed products, greatly improves the applicability and processing reliability of the tooling, and also reduces the manufacturing cost of using multiple sets of special fixtures.
[0025] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A tooling for drilling holes in bicycle handlebars, characterized in that: Includes a base plate, and positioning plates, positioning blocks, rod limiting components, end limiting components and drilling mold limiting components, all fixed on the base plate; The rod limiting assembly includes a mounting plate fixed to the base plate, a first cylinder fixed to the mounting plate, and a clamping plate fixed to the end of the telescopic rod of the first cylinder. The clamping plate and the positioning block are arranged opposite to each other. An infrared ranging sensor is fixed on the mounting plate, and the laser of the infrared ranging sensor is perpendicularly irradiated onto the clamping plate. It also includes a controller, which is electrically connected to the infrared ranging sensor and the servo cylinder. The controller is used to control the extension distance of the servo cylinder according to the measured distance signal of the infrared ranging sensor. The drilling die limiting assembly includes a servo electric cylinder fixed on the base plate and a drilling die fixed to the end of the telescopic rod of the servo electric cylinder. The drilling die is provided with a guide hole, and the end face of the positioning block that is close to the clamping plate is on the same plane as the center point of the guide hole.
2. The handlebar drilling fixture according to claim 1, characterized in that: The base plate is right-angled, and there are two sets of each of the positioning plate, positioning block, rod limiting component, end limiting component and drilling mold limiting component, which are symmetrically arranged with respect to the fold line at the right-angle corner of the base plate.
3. The handlebar drilling fixture according to claim 2, characterized in that: The end limiting component is located near the positioning plate, and the end limiting component and the rod limiting component are perpendicular to each other.
4. The handlebar drilling fixture according to claim 3, characterized in that: The end limiting assembly includes a second cylinder fixed to the base plate and a clamping plate fixed to the end of the telescopic rod of the second cylinder, the clamping plate being arranged perpendicularly to the positioning plate.
5. The handlebar drilling fixture according to claim 1, characterized in that: It also includes a bend limiting assembly fixed at the right-angle corner of the base plate. The bend limiting assembly includes a rear plate fixed to the base plate, a central shaft slidably connected to the rear plate, a baffle fixed to the tail end of the central shaft, a spring passing through the central shaft rod, and a front plate fixed to the end of the central shaft. The spring is located between the front plate and the rear plate, and the bottom of the front plate can slide relative to the base plate.