Positioning tool for drilling machining of clutch shell

Abstract

The invention provides a positioning tool for clutch shell drilling machining. The positioning tool comprises a driving shaft, a positioning assembly, a clamping assembly and a drilling assembly. The driving shaft is provided with a first axis, and the positioning assembly can rotate around the first axis and is composed of a plurality of positioning units distributed in the circumferential direction. The positioning unit has an axial positioning function and a perpendicularity adjusting function, the axial positioning function is used for pushing the workpiece to a preset position along the first axis, and the perpendicularity adjusting function is used for adjusting the position of the workpiece in the direction perpendicular to the first axis after the workpiece is pushed. The clamping assembly is arranged on the inner side of the positioning assembly and used for fixing a workpiece. A position adjusting mechanism is arranged on the driving shaft, the driving shaft has a first stroke and a second stroke, and when the driving shaft is in the first stroke, the positioning unit positions a workpiece, and the clamping assembly fixes the workpiece; and when the drilling assembly is in the second stroke, the drilling assembly drills the workpiece. Therefore, the stability of the drilling process is enhanced, and the accuracy of the drilling position is improved.

Description

Technical Field

[0001] The invention relates to the technical field of positioning tooling, in particular to a positioning tooling for clutch housing drilling. Background Art

[0002] In modern manufacturing, motorcycles are an important means of transportation, and the machining quality of their key components directly impacts the performance and safety of the entire vehicle. The clutch, a core component in a motorcycle's transmission system, requires critical machining accuracy for its housing. In particular, during the drilling process, hole accuracy and straightness are crucial to clutch assembly precision and operational stability.

[0003] Traditional clutch housing processing methods often rely on manual operation, which is not only inefficient but also prone to positioning errors, resulting in unstable processing quality. In addition, manual operation makes it difficult to ensure the consistency of each processed part, which often leads to hole position deviation and processing inconsistency, thus affecting the overall quality of the product and increasing the difficulty and uncertainty of subsequent assembly.

[0004] In recent years, with the advancement of mechanical automation technology, more and more manufacturers have begun using mechanical drilling machines for processing and production. These machines not only improve production efficiency but also significantly enhance machining accuracy and product quality. In the drilling process of clutch housings, the use of mechanical drilling machines can effectively reduce human error, improve the accuracy and consistency of hole placement, and meet the requirements of high-precision machining.

[0005] However, while existing mechanical drilling machines can increase drilling speed, their positioning accuracy and repeatability are poor. Traditional mechanical equipment often lacks effective positioning mechanisms, leading to workpiece deviation during clamping and positioning. This error accumulates, especially in high-volume production, resulting in significant scrap and rework, increasing production costs. Furthermore, traditional equipment's inadequate workpiece fixturing during operation can easily cause vibration, affecting hole placement accuracy.

[0006] Existing automated positioning tooling still has some design deficiencies. For example, during the workpiece positioning and clamping process, the workpiece may be offset or not clamped firmly due to unreasonable structural design.

[0007] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0008] Based on this, it is necessary to provide a positioning tool for clutch housing drilling to address the problems of workpiece offset or loose clamping during the machining process of current mechanical drilling machines.

[0009] The above purpose is achieved through the following technical solutions: A positioning tool for clutch housing drilling, comprising: a drive shaft having a first axis; a positioning assembly capable of rotating about the first axis, the positioning assembly comprising a plurality of positioning units circumferentially distributed about the first axis, the positioning units having an axial positioning function and a vertical adjustment function; the axial positioning function is used to push the workpiece to a preset position along the first axis, and the vertical adjustment function is used to adjust the position of the workpiece in a direction perpendicular to the first axis after the pushing is completed; A clamping assembly, the clamping assembly being arranged on the inner side of the positioning assembly and being used to fix a workpiece; A drilling assembly, used for drilling a workpiece; A position adjustment mechanism is provided on the driving shaft, and the position adjustment mechanism has a first stroke and a second stroke. When in the first stroke, the positioning unit positions the workpiece and the clamping assembly fixes the workpiece; when in the second stroke, the drilling assembly drills the workpiece.

[0010] In one embodiment, the positioning unit includes a driving assembly and a positioning plate, and the driving assembly is used to drive the positioning plate to rotate so as to push the workpiece to move along the first axis to a preset position.

[0011] In one embodiment, the positioning unit further includes an anti-slip structure, which is slidably connected to the positioning plate, and the driving assembly drives the anti-slip structure to generate periodic vibration to adjust the position of the workpiece in a direction perpendicular to the first axis.

[0012] In one embodiment, a limiting structure is further included. The limiting structure is provided on the workpiece and cooperates with the positioning plate to drive the workpiece to move.

[0013] In one embodiment, a avoidance hole is provided on the positioning plate, and when the position adjustment mechanism is in the second stroke, the avoidance hole is aligned with the drilling path of the drilling assembly.

[0014] In one embodiment, the clamping assembly includes a plurality of clamping racks distributed circumferentially around the first axis, and the clamping racks are movable in a direction perpendicular to the first axis to fix the workpiece.

[0015] In one embodiment, the clamping assembly further includes a chuck, a ring gear and a step gear, the ring gear is rotatably connected to the chuck, the ring gear is connected to the step gear, and the step gear is connected to the clamping rack.

[0016] In one embodiment, a limit block is provided on the driving shaft. When the position adjustment mechanism is in the first stroke, the limit block is connected to the ring gear, and the driving shaft drives the ring gear to rotate, so as to realize the movement of the clamping rack in a direction perpendicular to the first axis.

[0017] In one embodiment, a stop plate is further included, wherein the stop plate is fixedly connected to the drive shaft, and the stop plate is used to limit the movement of the workpiece on the first axis.

[0018] In one embodiment, it further includes a driving mechanism and a transmission gear, and the driving mechanism is connected to the driving shaft through the transmission gear.

[0019] The beneficial effects of the present invention are: The present invention provides a positioning tool for clutch housing drilling, which includes a drive shaft, a positioning assembly, a clamping assembly and a drilling assembly. The drive shaft has a first axis, and the positioning assembly can rotate around the first axis and is composed of a plurality of circumferentially distributed positioning units. The positioning unit has an axial positioning function and a verticality adjustment function, wherein the axial positioning function is used to push the workpiece to a preset position along the first axis, and the verticality adjustment function adjusts the position of the workpiece in a direction perpendicular to the first axis after pushing. The clamping assembly is arranged on the inner side of the positioning assembly and is used to fix the workpiece. The drive shaft is provided with a position adjustment mechanism and has a first stroke and a second stroke. When in the first stroke, the positioning unit positions the workpiece and the clamping assembly fixes the workpiece; when in the second stroke, the drilling assembly drills the workpiece. Therefore, the stability of the processing process is enhanced and the accuracy of the drilling position is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a positioning tool for clutch housing drilling provided by one embodiment of the present invention; Figure 2 for Figure 1 Side view of the positioning tool used for drilling the clutch housing; Figure 3 for Figure 2 Cross-sectional view of the positioning tool used for drilling the clutch housing along section AA; Figure 4 for Figure 2 A half-section view of the positioning tool used for drilling the clutch housing from another viewing direction; Figure 5 for Figure 2 Schematic diagram of the structure of the workpiece in the positioning tool for drilling the clutch housing; Figure 6 for Figure 2 A half-section view of the clamping assembly in the positioning tool used for drilling the clutch housing; Figure 7 for Figure 2 A half-section view of the positioning assembly in the positioning tool used for drilling the clutch housing; Figure 8 for Figure 7 Schematic diagram of the structure of the positioning unit in the positioning tool used for clutch housing drilling.

[0021] in: 100. workpiece; 101. limiting structure; 200, frame; 210, power box; 211, drive mechanism; 212, transmission gear; 220, drive shaft; 221, position adjustment mechanism; 222, limit block; 230, stop plate; 240, drilling assembly; 300, positioning assembly; 301, ring; 310, positioning unit; 311, drive motor; 312, positioning gear; 313, positioning plate; 314, fixing bracket; 315, anti-slip structure; 316, avoidance hole; 400, clamping assembly; 401, chuck; 402, ring gear; 403, keyway; 404, step gear; 405, clamping rack. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0024] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0025] Refer to the following Figures 1 to 8 The present invention describes a positioning tool for clutch housing drilling provided by an embodiment of the present invention.

[0026] like Figures 1 to 8 As shown, the positioning tool for clutch housing drilling provided by an embodiment of the present invention is particularly suitable for performing positioning drilling on the housing of a motorcycle clutch. Of course, it can also be used for positioning drilling in other working conditions. Specifically, the positioning tool for clutch housing drilling includes a frame 200, a power box 210, and a drive shaft 220. The frame 200 serves as the installation base for other parts, including the power box 210 and the drive shaft 220. Other parts can be directly or indirectly installed on the frame 200 and form a relative whole after installation. The power box 210 provides power for the rotation of the drive shaft 220, and the first axis is the central axis of the drive shaft 220.

[0027] like Figure 2 As shown, the positioning assembly 300 is coaxially mounted with the drive shaft 220 and is capable of rotating about a first axis. The positioning assembly 300 includes multiple positioning units 310 distributed around the first axis, each of which provides both axial positioning and vertical adjustment functions. Specifically, the workpiece 100 is first placed by a conveyor mechanism onto the end of the drive shaft 220 away from the power box 210, ensuring that the initial position of the workpiece 100 matches the operating range of the positioning assembly 300.

[0028] Before the drilling operation begins, the positioning unit 310 first pushes the workpiece 100 to move along the first axis toward the power box 210. Figure 3 The positioning unit 310 moves in the left direction until the workpiece 100 reaches the preset position. During this process, the positioning unit 310 gradually and completely contacts the workpiece 100, ensuring smooth movement of the workpiece 100. When the workpiece 100 reaches the preset position, the positioning unit 310 drives the workpiece 100 to move in a direction perpendicular to the first axis to adjust the position of the workpiece 100 on the drive shaft 220, ensuring that the workpiece 100 is placed perpendicular to the drive shaft 220, thereby ensuring accurate positioning of the workpiece 100.

[0029] The clutch housing drilling tooling also includes a clamping assembly 400, located inside the positioning assembly 300 and used to secure the workpiece 100. Specifically, when the positioning unit 310 pushes the workpiece 100 to a predetermined position, it is aligned with the clamping assembly 400, and the clamping assembly 400 is positioned inside the workpiece 100. The clamping assembly 400 then secures the workpiece 100, ensuring its stability during drilling and preventing machining errors caused by vibration or movement.

[0030] In addition, if Figure 3 As shown, a position adjustment mechanism 221 is provided on the drive shaft 220. Specifically, the position adjustment mechanism 221 divides the drive shaft 220 into a front section and a rear section, and the front section and the rear section are slidably connected by the position adjustment mechanism 221. In the positioning and fixing stage of the workpiece 100, the position adjustment mechanism 221 is in the first stroke, that is, the position adjustment mechanism 221 drives the rear section of the drive shaft 220 to slide to the left, that is, Figure 3 The left and right directions in the middle, until the rear section drive shaft 220 contacts the front section drive shaft 220. Then after the positioning assembly 300 completes positioning, the drive shaft 220 rotates to drive the clamping assembly 400 to fix the workpiece 100.

[0031] Further, if Figures 1 to 3 As shown, the clutch housing drilling tooling also includes a drilling assembly 240, which is arranged on the frame 200. Specifically, after the workpiece 100 is positioned and fixed, the position adjustment mechanism 221 is in the second stroke, that is, the position adjustment mechanism 221 drives the rear drive shaft 220 to slide to the right, that is, Figure 3 In the left-right direction, the rear drive shaft 220 gradually separates from the front drive shaft 220. At this point, the drilling assembly 240 is activated to drill the workpiece 100. After the first hole is drilled, the drive shaft 220 drives the workpiece 100, the clamping assembly 400, and the positioning assembly 300 to rotate synchronously, allowing the drilling assembly 240 to smoothly proceed to the next drilling operation, thus achieving a continuous and efficient processing process.

[0032] In one embodiment, Figure 8 As shown, the positioning unit 310 includes a drive assembly and a positioning plate 313. Specifically, the drive assembly includes a drive motor 311 and a positioning gear 312, and the drive motor 311 is engaged with the positioning gear 312 for transmission. In addition, the positioning unit 310 also includes a fixed bracket 314, and the positioning gear 312 and the positioning plate 313 are connected by the fixed bracket 314.

[0033] In positioning the workpiece 100, the drive motor 311 is first started. Before the workpiece 100 reaches the preset position, the positioning plate 313 and the positioning gear 312 are firmly connected by the fixing bracket 314, so the positioning plate 313 and the positioning gear 312 can be regarded as a whole. Therefore, after the drive motor 311 rotates, it drives the positioning plate 313 to rotate in the direction close to the workpiece 100 and gradually contacts the workpiece 100. If the drive motor 311 continues to rotate, the positioning plate 313 pushes the workpiece 100 to slide to the left, that is, Figure 3 in the left and right directions until the workpiece 100 reaches the preset position.

[0034] Further, if Figure 8 As shown, the positioning unit 310 also includes an anti-slip structure 315, which is slidably connected to the positioning plate 313. Specifically, when the workpiece 100 reaches the preset position, the positioning plate 313 cannot continue to rotate. At this time, the positioning gear 312 is meshed with the anti-slip structure 315. Therefore, the continued rotation of the drive motor 311 causes the positioning gear 312 to drive the anti-slip structure 315 to move. Because the anti-slip structure 315 is slidably connected to the positioning plate 313 and an elastic member is provided between them, the continued rotation of the positioning gear 312 causes the anti-slip structure 315 to slide toward the positioning plate 313, compressing the elastic member. During the process of one tooth of the positioning gear 312 meshing with the anti-slip structure 315, the elastic member is continuously compressed; when the tooth disengages, the anti-slip structure 315 automatically resets under the action of the elastic force and meshes with the next tooth. This process causes the anti-slip structure 315 to produce periodic vibrations, causing the anti-slip structure 315 to continuously switch between pushing and resetting. Since the anti-slip structure 315 is connected to the positioning plate 313, the anti-slip structure 315 causes the positioning plate 313 to vibrate continuously during the process of being repeatedly pushed and reset, thereby causing the workpiece 100 pushed by the positioning plate 313 to vibrate, further adjusting the position of the workpiece 100 to ensure that the workpiece 100 is perpendicular to the drive shaft 220.

[0035] It is understandable that the moment the teeth of positioning gear 312 disengage from anti-slip structure 315, the torque acting on positioning plate 313 will temporarily decrease. However, due to the significant friction between positioning gear 312 and fixing bracket 314, and the connection between fixing bracket 314 and positioning plate 313, the torque exerted by positioning gear 312 on positioning plate 313 will not completely disappear. This means that the force pushing workpiece 100 against positioning plate 313 will not disappear; it will only be reduced at the moment of disengagement, which will not affect the positioning accuracy of workpiece 100.

[0036] Finally, when the workpiece 100 is positioned, the driving motor 311 is turned off.

[0037] In one embodiment, Figure 5As shown, the workpiece 100 is provided with limiting structures 101, the number of which is the same as the positioning units 310. Specifically, the two sides of the positioning plate 313 are provided with smooth surfaces, and the positions correspond to the limiting structures 101 of the workpiece 100. When the positioning plate 313 pushes the workpiece 100, the smooth surfaces can smoothly enter the limiting structures 101, ensuring the accuracy of the position adjustment of the workpiece 100.

[0038] Further, if Figure 4 As shown, positioning assembly 300 also includes a collar 301, on which positioning unit 310 is mounted. Collar 301 also protects components within positioning assembly 300 from damage during operation. Collar 301 also provides a safety feature, effectively preventing potential injury to operators.

[0039] In one embodiment, Figure 7 and Figure 8 As shown, the positioning plate 313 is provided with a clearance hole 316. Specifically, after the workpiece 100 is positioned and secured, the clearance hole 316 is aligned with the drilling path of the drilling assembly 240, forming an unobstructed forward path for the drilling assembly 240. This ensures that the drilling assembly 240 moves along a predetermined trajectory during machining, avoiding interference with the positioning plate 313 and damage to the positioning plate 313.

[0040] In one embodiment, Figure 6 As shown, the clamping assembly 400 includes a plurality of clamping racks 405 distributed circumferentially about a first axis.

[0041] Furthermore, the clamping assembly 400 further includes a chuck 401, a ring gear 402, and a step-gear 404. The ring gear 402 is rotationally connected to the chuck 401, and the ring gear 402 is connected to the step-gear 404. The step-gear 404 is connected to a clamping rack 405, and the clamping rack 405 is slidably connected to the chuck 401. It will be understood that the clamping rack 405, the ring gear 402, and the step-gear 404 are all disposed within the chuck 401.

[0042] In addition, if Figure 3 As shown, a limit block 222 is also provided on the drive shaft 220, and the limit block 222 is fixedly connected to the rear drive shaft 220. Specifically, the position adjustment mechanism 221 drives the rear drive shaft 220 to slide to the left, that is, Figure 3 In the left and right direction, until the rear drive shaft 220 contacts the front drive shaft 220. Figure 3 and Figure 6As shown, the limit block 222 synchronously slides to the left and cooperates with the keyway 403 of the ring gear 402. At this time, the drive shaft 220 drives the limit block 222 to rotate, thereby causing the ring gear 402 to rotate, and then controls the clamping rack 405 to move synchronously in the direction away from the drive shaft 220 until it contacts and fixes the workpiece 100. During the stage of fixing the workpiece 100, because the ring gear 402 is rotationally connected to the chuck 401 and the clamping rack 405 is slidingly connected to the chuck 401, the chuck 401 will not rotate. However, after the fixation is completed, the position adjustment mechanism 221 drives the rear section of the drive shaft 220 to slide to the right, so that the limit block 222 is matched with the chuck 401, thereby driving the entire clamping assembly 400 to rotate. Since the clamping rack 405 has fixed the workpiece 100, the rotation of the clamping assembly 400 will cause the workpiece 100 to rotate accordingly, thereby realizing drilling at different positions.

[0043] In one embodiment, Figure 3 and Figure 4 As shown, the positioning tool for clutch housing drilling processing also includes a stop plate 230, which is fixedly connected to the drive shaft 220. Specifically, the positioning plate 313 pushes the workpiece 100 to move leftward along the first axis, that is, Figure 3 in the left direction until the workpiece 100 abuts against the stop plate 230 .

[0044] In one embodiment, Figure 4 As shown, the clutch housing drilling positioning tool further includes a drive mechanism 211 and a transmission gear 212 . The drive mechanism 211 and the transmission gear 212 are both arranged inside the power box 210 , and the drive mechanism 211 is connected to the drive shaft 220 through the transmission gear 212 .

[0045] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A positioning tool for clutch housing drilling, characterized in that: include: a drive shaft having a first axis; a positioning assembly capable of rotating about the first axis, the positioning assembly comprising a plurality of positioning units circumferentially distributed about the first axis, the positioning units having an axial positioning function and a vertical adjustment function; the axial positioning function is used to push the workpiece to a preset position along the first axis, and the vertical adjustment function is used to adjust the position of the workpiece in a direction perpendicular to the first axis after the pushing is completed; A clamping assembly, the clamping assembly being arranged on the inner side of the positioning assembly and being used to fix a workpiece; A drilling assembly, used for drilling a workpiece; A position adjustment mechanism is provided on the driving shaft, and the position adjustment mechanism has a first stroke and a second stroke. When in the first stroke, the positioning unit positions the workpiece and the clamping assembly fixes the workpiece; when in the second stroke, the drilling assembly drills the workpiece.

2. The clutch housing drilling positioning tool according to claim 1, characterized in that: The positioning unit includes a driving assembly and a positioning plate. The driving assembly is used to drive the positioning plate to rotate so as to push the workpiece to move to a preset position along the first axis.

3. The clutch housing drilling positioning tool according to claim 2, characterized in that: The positioning unit further includes an anti-slip structure, which is slidably connected to the positioning plate. The driving assembly drives the anti-slip structure to generate periodic vibration to adjust the position of the workpiece in a direction perpendicular to the first axis.

4. The clutch housing drilling positioning tool according to claim 3, characterized in that: It also includes a limiting structure, which is arranged on the workpiece and cooperates with the positioning plate to drive the workpiece to move.

5. The clutch housing drilling positioning tool according to claim 4, characterized in that: The positioning plate is provided with an avoidance hole, and when the position adjustment mechanism is in the second stroke, the avoidance hole is aligned with the drilling path of the drilling assembly.

6. The clutch housing drilling positioning tool according to claim 1, characterized in that: The clamping assembly includes a plurality of clamping racks distributed circumferentially around the first axis. The clamping racks are movable in a direction perpendicular to the first axis to fix a workpiece.

7. The clutch housing drilling positioning tool according to claim 6, characterized in that: The clamping assembly further comprises a chuck, a gear ring and a step gear, wherein the gear ring is rotatably connected to the chuck, the gear ring is connected to the step gear, and the step gear is connected to the clamping rack.

8. The clutch housing drilling positioning tool according to claim 7, characterized in that: A limit block is provided on the driving shaft. When the position adjustment mechanism is in the first stroke, the limit block is connected to the ring gear, and the driving shaft drives the ring gear to rotate, so as to realize the movement of the clamping rack in a direction perpendicular to the first axis.

9. The clutch housing drilling positioning tool according to claim 1, characterized in that: It also includes a stop plate, which is fixedly connected to the drive shaft and is used to limit the movement of the workpiece on the first axis.

10. The clutch housing drilling positioning tool according to claim 1, characterized in that: It also includes a driving mechanism and a transmission gear, wherein the driving mechanism is connected to the driving shaft through the transmission gear.

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