A bicycle hub shaft hole enlarging processing equipment

Abstract

The utility model relates to the technical field of hole reaming devices, and in particular to a hole reaming processing device for a bicycle hub shaft. It comprises a working platform, a mounting groove is provided in the working platform, a driving assembly is provided in the mounting groove, a workpiece positioning device and a hole reaming device are respectively provided on the driving assembly, and the workpiece positioning device and the hole reaming device are symmetrically arranged on the driving assembly. By arranging the workpiece positioning device, the hub can be clamped and fixed, so as to avoid sliding during the hole reaming operation, which causes the drilling to deviate, and reduces the damage rate of the workpiece. At the same time, the use of rubber pads for clamping can avoid indentation on the hub during clamping; by arranging the workpiece positioning device, the hub can be clamped and fixed, so as to avoid sliding during the hole reaming operation, which causes the drilling to deviate, and reduces the damage rate of the workpiece. At the same time, the use of rubber pads for clamping can avoid indentation on the hub during clamping, and protect the appearance of the hub from damage.

Description

Technical Field

[0001] The utility model relates to the technical field of hole enlarging devices, in particular to a hole enlarging processing device for a bicycle hub shaft. Background Art

[0002] A bicycle hub is the part of a bicycle wheel that is located in the center of the wheel and connects the spokes to the rim, allowing the entire wheel to rotate. Bicycle hubs usually contain bearings so that the wheel hub can rotate smoothly.

[0003] During the manufacturing process of bicycle hubs, drilling is required. Generally, rough machining is performed first to pre-drill holes, and then fine machining is performed to expand the holes. However, existing expansion equipment will produce errors during the expansion process, and the workpiece will vibrate during processing, resulting in errors. Utility Model Content

[0004] The utility model aims to provide a bicycle hub shaft hole enlarging processing device to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution, which includes a working platform, an installation groove is opened in the working platform, a driving assembly is arranged in the installation groove, a workpiece positioning device and a hole expanding device are respectively arranged on the driving assembly, and the workpiece positioning device and the hole expanding device are symmetrically arranged on the driving assembly.

[0006] As a preferred embodiment of the utility model, the driving assembly includes a motor 1 arranged on one side of the working platform, a bidirectional lead screw is arranged on the transmission end of the motor 1, and the bidirectional lead screw is movably arranged in the installation groove.

[0007] As a preferred embodiment of the utility model, the workpiece positioning device includes a first driving member threadedly arranged on a bidirectional lead screw, a base plate is arranged on the top of the first driving member, the base plate is located on the top of the working platform, a mounting plate is arranged on one side of the top of the base plate, a pair of support members are symmetrically arranged on the other side of the top of the base plate, a connecting rod is arranged between the support member and the mounting plate, a roller is movably arranged on the connecting rod, a hub is arranged between the two rollers, and a center positioning assembly is arranged on one side of the mounting plate.

[0008] As a preferred embodiment of the utility model, a mounting frame is further provided on the bottom plate, and a mounting frame cover is provided on the outside of the two rollers. A telescopic cylinder is provided downwardly from the top of the mounting frame, and a rubber pad is provided after the telescopic rod of the telescopic cylinder passes through the top plate of the mounting frame.

[0009] As a preferred embodiment of the utility model, the center positioning assembly includes a limit shell arranged on the mounting plate, a limit rod movably arranged in the limit shell, two ends of the limit rod respectively pass through the mounting plate and the limit shell, an extrusion block is arranged on the limit rod, the extrusion block is arranged in the limit shell, an extrusion spring is also sleeved on the outer side of the limit rod, the extrusion spring is arranged between the extrusion block and the top surface inside the limit shell, and a pulling piece is arranged at the end of the limit rod away from the hub.

[0010] As a preferred embodiment of the utility model, the reaming device includes a second driving member threadedly arranged on a bidirectional lead screw, an "L"-shaped plate is arranged on the second driving member, a second motor is arranged on the "L"-shaped plate, and a transmission end of the second motor passes through the "L"-shaped plate. A plurality of connecting members are arranged around the top thereof, and an adjusting drilling assembly is arranged at the transmission end of the second motor. A scale mark is also arranged on the side of the "L"-shaped plate away from the second motor.

[0011] As a preferred embodiment of the utility model, the adjusting drilling assembly includes a fixing part, a plurality of connecting parts 2 corresponding to the connecting part 1 are arranged around the fixing part, the connecting part 1 and the connecting part 2 are connected by screws, a sliding rod is arranged on the top of the fixing part, a slot is opened on the sliding rod, a slider is slidably arranged on the sliding rod, a bolt group is arranged on the slider, a laser emitter is arranged on the top of the slider, and a drilling device is arranged on the side of the slider.

[0012] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0013] 1. The utility model can clamp and fix the hub by arranging a workpiece positioning device, so as to avoid sliding during the hole expansion operation, resulting in deviation of drilling, and reducing the damage rate of the workpiece. At the same time, the use of rubber pads for clamping can avoid indentation on the hub during clamping, thereby protecting the appearance of the hub from damage.

[0014] 2. The utility model arranges a center positioning component on the workpiece positioning device and utilizes the symmetry of the holes drilled on both sides of the hub to ensure that the hole drilled on one side is always aligned with the axis of the second motor, thereby avoiding errors during drilling and hole expansion and ensuring the quality of hole expansion.

[0015] 3. The utility model can adjust the offset distance between the drilling equipment and the center according to the size of the expanded hole by setting an adjustable drilling component. The structure is simple and easy to operate, and no professional personnel are required to operate it, which reduces training costs and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model after the working platform is dismantled;

[0018] Figure 3 This is a schematic diagram of the structure of the workpiece positioning device of the utility model from a left perspective;

[0019] Figure 4 This is a schematic diagram of the workpiece positioning device of the utility model from a right perspective;

[0020] Figure 5 This is a side cross-sectional view of the center positioning assembly of the utility model;

[0021] Figure 6 It is a schematic diagram of the structure of the hole enlarging device of the utility model from the right perspective;

[0022] Figure 7 It is a schematic diagram of the structure of the hole enlarging device of the utility model from a left perspective;

[0023] Figure 8 This is a schematic diagram of the structure of the adjustable drilling assembly of the utility model;

[0024] Fig. 9 It is a partial structural schematic diagram of the adjustable drilling assembly of the utility model;

[0025] Fig.10 It is a partial structural schematic diagram of the adjustable drilling assembly of the utility model.

[0026] Figure numerals: working platform 1, mounting groove 10, workpiece positioning device 2, base plate 20, first driving member 21, mounting plate 22, supporting member 23, connecting rod 24, roller 25, mounting frame 26, telescopic cylinder 27, rubber pad 28, center positioning assembly 29, limit shell 290, extrusion spring 291, limit rod 292, extrusion block 293, pulling member 294, hole expanding device 3, "L"-shaped plate 30, second driving member 31, motor two 32, connecting member one 33, scale mark 34, adjusting drilling assembly 35, fixing member 350, connecting member two 351, sliding rod 352, slotting 353, sliding block 354, bolt group 355, drilling equipment 356, laser emitter 357, driving assembly 4, motor one 40, bidirectional screw 41, hub 5. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0028] like Figure 1As shown, the utility model proposes a bicycle hub axle reaming processing equipment, which includes a working platform 1, a mounting groove 10 is opened in the working platform 1, a driving component 4 is arranged in the mounting groove 10, and a workpiece positioning device 2 and a reaming device 3 are respectively arranged on the driving component 4, and the workpiece positioning device 2 and the reaming device 3 are symmetrically arranged on the driving component 4.

[0029] like Figure 2 As shown, the driving assembly 4 includes a motor 40 arranged on one side of the working platform 1, and a bidirectional lead screw 41 is arranged on the transmission end of the motor 40, and the bidirectional lead screw 41 is movably arranged in the installation groove 10.

[0030] like Figure 3-Figure 4 As shown, the workpiece positioning device 2 includes a first driving member 21 threadedly arranged on a bidirectional lead screw 41, a base plate 20 is arranged on the top of the first driving member 21, the base plate 20 is located on the top of the working platform 1, a mounting plate 22 is arranged on one side of the top of the base plate 20, a pair of support members 23 are symmetrically arranged on the other side of the top of the base plate 20, a connecting rod 24 is arranged between the support member 23 and the mounting plate 22, a roller 25 is movably arranged on the connecting rod 24, a hub 5 is arranged between the two rollers 25, and a center positioning component 29 is arranged on one side of the mounting plate 22; a mounting frame 26 is also arranged on the base plate 20, the mounting frame 26 cover is arranged on the outside of the two rollers 25, a telescopic cylinder 27 is arranged downward on the top of the mounting frame 26, and after the telescopic rod of the telescopic cylinder 27 passes through the top plate of the mounting frame 26, a rubber pad 28 is arranged on the top of the telescopic rod.

[0031] like Figure 5 As shown, the center positioning assembly 29 includes a limiting shell 290 arranged on the mounting plate 22, and a limiting rod 292 is movably arranged in the limiting shell 290. The two ends of the limiting rod 292 pass through the mounting plate 22 and the limiting shell 290 respectively. An extrusion block 293 is arranged on the limiting rod 292, and the extrusion block 293 is arranged in the limiting shell 290. An extrusion spring 291 is also sleeved on the outer side of the limiting rod 292, and the extrusion spring 291 is arranged between the extrusion block 293 and the inner top surface of the limiting shell 290. A pulling piece 294 is arranged at the end of the limiting rod 292 away from the hub 5.

[0032] like Figure 6-Figure 7 As shown, the reaming device 3 includes a second driving member 31 threadedly arranged on a bidirectional lead screw 41, an "L"-shaped plate 30 is arranged on the second driving member 31, a second motor 32 is arranged on the "L"-shaped plate 30, and a driving end of the second motor 32 passes through the "L"-shaped plate 30, and a plurality of connecting members 33 are arranged around the top thereof, an adjusting drilling assembly 35 is arranged at the driving end of the second motor 32, and a scale mark 34 is also arranged on the side of the "L"-shaped plate 30 away from the second motor 32.

[0033] like Figure 8-Figure 10As shown, in the adjustment drilling assembly 35, a plurality of connecting members 351 corresponding to the connecting member 33 are arranged around the fixing member 350, and the connecting member 33 and the connecting member 351 are connected by screws. A sliding rod 352 is arranged on the top of the fixing member 350, and a slot 353 is opened on the sliding rod 352. A slider 354 is slidably arranged on the sliding rod 352, and a bolt group 355 is arranged on the slider 354. A laser emitter 357 is arranged on the top of the slider 354, and a drilling device 356 is arranged on the side of the slider 354.

[0034] When in use, the hub 5 needs to be placed between the two rollers 25, and then the symmetrical limit rod 292 is inserted into one of the holes of the hub 5 close to the side of the center positioning component 29, and then the telescopic cylinder 27 is started to make the rubber pad 28 clamp and fix the hub 5, and then the laser transmitter 357 is started, and the slider 354 is slid according to the size of the hole to be expanded, and the laser stops when it reaches the specified scale mark 34, and then the bolt group 355 is tightened, and then the motor 2 32 and the drilling device 356 are started;

[0035] Then start the motor 40 again to drive the bidirectional screw 41 to rotate, which will drive the first drive member 21 and the second drive member 31 to move slowly inward synchronously. When the drilling equipment 356 contacts the hub 5, one of the holes can be expanded and drilled. After the expansion is completed, reverse the motor 40, and then just raise the telescopic cylinder 27, pull the pull piece 294, and then manually rotate the hub 5 to align the next hole with the limit rod 292, then release the pull piece 294, insert the limit rod 292 into the hole, and finally lower the telescopic cylinder 27 for clamping to carry out the expansion operation of the next hole.

[0036] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A bicycle hub axle hole enlarging processing equipment, comprising a working platform (1), characterized in that: The working platform (1) is provided with an installation groove (10), a driving assembly (4) is arranged in the installation groove (10), a workpiece positioning device (2) and a hole expanding device (3) are respectively arranged on the driving assembly (4), and the workpiece positioning device (2) and the hole expanding device (3) are symmetrically arranged on the driving assembly (4).

2. The bicycle hub axle hole enlarging processing equipment according to claim 1, characterized in that: The driving assembly (4) comprises a motor 1 (40) arranged on one side of the working platform (1), a bidirectional lead screw (41) being arranged on the transmission end of the motor 1 (40), and the bidirectional lead screw (41) being movably arranged in the mounting groove (10).

3. The bicycle hub axle hole enlarging processing equipment according to claim 2, characterized in that: The workpiece positioning device (2) comprises a first driving member (21) threadedly arranged on a bidirectional lead screw (41), a base plate (20) being arranged on the top of the first driving member (21), the base plate (20) being located on the top of the working platform (1), a mounting plate (22) being arranged on one side of the top of the base plate (20), a pair of supporting members (23) being symmetrically arranged on the other side of the top of the base plate (20), a connecting rod (24) being arranged between the supporting members (23) and the mounting plate (22), a roller (25) being movably arranged on the connecting rod (24), a hub (5) being arranged between the two rollers (25), and a center positioning component (29) being arranged on one side of the mounting plate (22).

4. The bicycle hub axle hole enlarging processing equipment according to claim 3, characterized in that: A mounting frame (26) is also provided on the bottom plate (20). The mounting frame (26) is covered on the outside of the two rollers (25). A telescopic cylinder (27) is provided downwardly on the top of the mounting frame (26). A rubber pad (28) is provided after the telescopic rod of the telescopic cylinder (27) passes through the top plate of the mounting frame (26).

5. The bicycle hub axle hole enlarging processing equipment according to claim 4, characterized in that: The center positioning component (29) includes a limiting shell (290) arranged on the mounting plate (22), a limiting rod (292) movably arranged in the limiting shell (290), two ends of the limiting rod (292) respectively pass through the mounting plate (22) and the limiting shell (290), an extrusion block (293) is arranged on the limiting rod (292), the extrusion block (293) is arranged in the limiting shell (290), an extrusion spring (291) is also sleeved on the outer side of the limiting rod (292), the extrusion spring (291) is arranged between the extrusion block (293) and the inner top surface of the limiting shell (290), and a pulling piece (294) is arranged at one end of the limiting rod (292) away from the hub (5).

6. The bicycle hub axle hole enlarging processing equipment according to claim 5, characterized in that: The reaming device (3) comprises a second driving member (31) threadedly arranged on a bidirectional lead screw (41); an "L"-shaped plate (30) is arranged on the second driving member (31); a second motor (32) is arranged on the "L"-shaped plate (30); after the transmission end of the second motor (32) passes through the "L"-shaped plate (30), a plurality of first connecting members (33) are arranged around the top of the second motor (32); an adjusting drilling assembly (35) is arranged at the transmission end of the second motor (32); and a scale mark (34) is also arranged on the side of the "L"-shaped plate (30) away from the second motor (32).

7. The bicycle hub axle hole enlarging processing equipment according to claim 6, characterized in that: The adjusting drilling assembly (35) comprises a fixing member (350), and a plurality of connecting members (351) corresponding to the connecting member (33) are arranged around the fixing member (350), and the connecting member (33) and the connecting member (351) are connected by screws. A sliding rod (352) is arranged on the top of the fixing member (350), and a slot (353) is provided on the sliding rod (352). A slider (354) is slidably arranged on the sliding rod (352), and a bolt group (355) is arranged on the slider (354). A laser emitter (357) is arranged on the top of the slider (354), and a drilling device (356) is arranged on the side of the slider (354).

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