A bicycle wheel rim drilling device

Abstract

The utility model provides a bicycle wheel rim trepanning device relates to sheet metal processing technical field, this bicycle wheel rim trepanning device includes installation platform, trepanning part, positioning part, positioning part has four positioning units, four positioning units are arranged respectively on four trepanning units, and the included angle between two adjacent positioning units is 90 DEG, this kind of trepanning device when using, can control drilling machine and clamping block movement simultaneously, and the clamping block for starting clamping and positioning effect of wheel rim will be prior to drilling machine and wheel rim contact, before drilling machine and wheel rim contact, namely completed the clamping and positioning of wheel rim, and when completing the trepanning of wheel rim, drilling machine also will be prior to wheel rim separation, and clamping block will be separated from wheel rim subsequently, since drilling machine and clamping block are all moved simultaneously, thus can avoid the clamping positioning of wheel rim to exist larger time interval between the trepanning of wheel rim, can the trepanning efficiency of wheel rim of clamping block, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing technology, specifically a device for drilling holes in bicycle wheel rims. Background Technology

[0002] When installing bicycle spokes, holes need to be drilled in the rim. Drilling holes in the rim requires a drilling device. Existing drilling devices include a drilling module and a clamping module. After clamping and positioning the rim, the hole is drilled, and then the clamped and positioned rim is released. Since clamping and positioning the rim, drilling, and releasing the rim are all done separately, it wastes a lot of time and affects production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a bicycle wheel rim hole-opening device, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: the bicycle wheel rim hole-opening device includes:

[0005] Installation platform;

[0006] An opening section is provided on a mounting platform and has 16 opening units, which can move synchronously.

[0007] The positioning part is disposed on the opening part. The positioning part has four positioning units, which are respectively disposed on four of the opening units, and the included angle between two adjacent positioning units is 90°.

[0008] Preferably, the opening portion includes a cover mounted on a mounting platform. The upper surface of the cover has 16 slots, and a guide rail is slidably connected inside each slot. A drilling machine is mounted on one side of the upper surface of the guide rail, and a column is mounted on the other side of the upper surface of the guide rail. A drive unit is mounted inside the cover, and the output end of the drive unit penetrates through the cover. A top cover is mounted above the output end of the drive unit. A flower-shaped guide groove is formed on the lower surface of the top cover. The column is located inside the guide groove. The guide groove has 16 guide intervals. Each guide interval has two farthest points farthest from the center of the top cover and one nearest point closest to the center of the top cover. The central angle between two adjacent vertices is 22.5°.

[0009] Preferably, the positioning part includes an L-shaped fixing block disposed on the guide rail. A notch is provided on the outer side of the bent part of the fixing block, and a clamping block is disposed inside the notch. Two guide rods are disposed on one side of the clamping block. A guide hole for the movement of the guide rod is provided inside the fixing block. A fixing rod is disposed on one side of the clamping block. The fixing rod passes through the fixing block. A baffle is disposed at one end of the fixing rod. A spring is sleeved on the fixing rod. The spring is located between the baffle and the fixing block.

[0010] Preferably, the upper surface of the cover is arranged with 16 round rods in a circumferential array, one end of the guide rail is provided with a connecting post, and it also includes a tension spring. The two ends of the tension spring are respectively connected to the round rods and the connecting post, and the tension spring is always in a stretched state.

[0011] Preferably, a roller is rotatably connected to the outside of the column, and the roller is located inside the guide groove.

[0012] The beneficial effects of this utility model are:

[0013] When in use, this type of drilling device can simultaneously control the movement of the drilling machine and the clamping block. The clamping block, which is used to start clamping and positioning the rim, will contact the rim before the drilling machine contacts it. The clamping and positioning of the rim is completed before the drilling machine contacts the rim. After the rim is drilled, the drilling machine will separate from the rim first, and the clamping block will separate from the rim subsequently. Since the drilling machine and the clamping block move simultaneously, a large time interval between the clamping and positioning of the rim and the drilling of the rim can be avoided, thus improving the efficiency of the rim drilling and the effect of use. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0015] Figure 2 This is a diagram showing the wheel rim placed on four fixed blocks.

[0016] Figure 3 This is a side view of the inside of the casing.

[0017] Figure 4 This is a schematic diagram showing the fit between the partially cut top cover and the roller.

[0018] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0019] Figure 6 This is a schematic diagram of the top cover.

[0020] Figure 7 This is a schematic diagram of the structure of the guide rail and the cover.

[0021] Figure 8 This is a schematic diagram of the structure of the tension spring and the guide rail.

[0022] Figure 9 yes Figure 8 A magnified view of a section at point B.

[0023] Figure 10 This is a partial sectional view of the fixed block.

[0024] Figure 11 This is a schematic diagram of the clamping block.

[0025] In the diagram: 1. Mounting platform; 2. Wheel rim; 3. Cover; 4. Guide rail; 5. Drilling machine; 6. Column; 7. Drive unit; 8. Top cover; 9. Guide groove; 10. Fixing block; 11. Clamping block; 12. Guide rod; 13. Fixing rod; 14. Roller; 15. Baffle; 16. Spring; 17. Round rod; 18. Connecting column; 19. Tension spring. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0027] like Figure 1-11 As shown, a bicycle wheel rim hole-opening device includes:

[0028] Mounting platform 1;

[0029] The opening section is set on the mounting platform 1 and has 16 opening units, which can move synchronously.

[0030] The positioning part is disposed on the opening part. The positioning part has four positioning units, which are respectively disposed on four of the opening units, and the included angle between two adjacent positioning units is 90°.

[0031] Compared to a 32-hole rim, a 16-hole rim allows for a reduction in the number of spokes used, thus lowering the overall weight of the wheelset and achieving vehicle lightweighting.

[0032] Furthermore, the opening section includes a cover 3 mounted on the mounting platform 1. The upper surface of the cover 3 has 16 slots, and a guide rail 4 is slidably connected inside each slot. A drilling machine 5 is mounted on one side of the upper surface of the guide rail 4, and a column 6 is mounted on the other side of the upper surface of the guide rail 4. A drive unit 7 is mounted inside the cover 3. The output end of the drive unit 7 passes through the cover 3. A top cover 8 is mounted above the output end of the drive unit 7. A flower-shaped guide groove 9 is opened on the lower surface of the top cover 8. The column 6 is located inside the guide groove 9. The guide groove 9 has 16 guide intervals. Each guide interval has two far points that are farthest from the center of the top cover 8 and one near point that is closest to the center of the top cover 8. The central angle between two adjacent vertices is 22.5°.

[0033] Both the housing 3 and the guide rail 4 are made of metal. The drilling machine 5 includes a motor, a connector and a drill bit. The drill bit is mounted on the motor through the connector. When drilling a hole in the wheel rim 2, the direction of rotation of the drill bit remains unchanged, whether the drill bit is drilling into the wheel rim 2 or withdrawing from the wheel rim 2.

[0034] The drive unit 7 includes a motor and a reducer. The motor drives the top cover 8 to rotate through the reducer. The top cover 8 is made of metal. When the top cover 8 rotates, it can move the guide rail 4 through the cooperation of the guide section and the column 6. When the column 6 has completely passed through a guide section, the guide rail 4 will first move towards the center of the top cover 8, and then move away from the center of the top cover 8. During this process, the top cover 8 rotates by an angle of 22.5°. Through the closed-loop control of the servo motor, high-precision planetary gear reducer and encoder, a long-term stable error of 22.5°±0.1° can be achieved. At the same time, regular maintenance of the equipment is required to ensure that the equipment can be used normally.

[0035] Furthermore, the positioning part includes an L-shaped fixing block 10 mounted on the guide rail 4. A notch is provided on the outer side of the bent part of the fixing block 10, and a clamping block 11 is provided inside the notch. Two guide rods 12 are provided on one side of the clamping block 11. A guide hole for the movement of the guide rods 12 is provided inside the fixing block 10. A fixing rod 13 is provided on one side of the clamping block 11. The fixing rod 13 passes through the fixing block 10. A baffle 15 is provided at one end of the fixing rod 13. A spring 16 is sleeved on the fixing rod 13. The spring 16 is located between the baffle 15 and the fixing block 10.

[0036] A high-strength spring 16 is selected. Before drilling the rim 2, the rim 2 needs to be placed and positioned. Specifically, the rim 2 is placed on the four fixing blocks 10. The rim 2 does not need to be perfectly centered on the four fixing blocks 10; it is only necessary to prevent the rim 2 from falling off the four fixing blocks 10. After the rim 2 is placed, the drive unit 7 is started. The drive unit 7 drives the top cover 8 to rotate. When the top cover 8 rotates, it will drive the guide rail 4 to move on the cover 3 through the cooperation of the guide groove 9 under the top cover 8 and the column 6, and make the cover 3 move towards the center of the top cover 8. During the process of the guide rail 4 moving towards the center of the top cover 8, and before the drill bit rotating on the drilling machine 5 contacts the rim 2, the clamping block 11 located on the guide rail 4 will first contact the rim 2. And the clamping blocks 11 on the four fixing blocks 10 will all contact the rim 2 before the drill bit on the drilling machine 5. And after all four clamping blocks 11 have contacted the rim 2, the guide rail 4 still... Moving towards the center of the top cover 8, the clamping blocks 11 cannot follow the guide rail 4 to move towards the center of the top cover 8 because they are in contact with the wheel rim 2. Therefore, the spring 16 is compressed. Through the elastic force of the compressed spring 16, the four clamping blocks 11 can effectively clamp the wheel rim 2. After the effective clamping is completed, the guide rail 4 continues to move towards the center of the top cover 8. At this time, the drill bit can contact the wheel rim 2 and drill through it. As the top cover 8 continues to rotate, it will move away from the center of the top cover 8. When the drill bit withdraws from the wheel rim 2, the pressure applied to the wheel rim 2 by the clamping blocks 11 through the spring 16 gradually decreases until the spring 16 returns to its original position, the clamping blocks 11 separate from the wheel rim 2, and the guide rail 4 returns to its original position. At this time, the drilling machine 5 stops rotating, and the drive unit 7 also stops rotating. The operator can then remove the wheel rim 2 from the four fixed blocks 10 and place a new wheel rim 2 on the four fixed blocks 10.

[0037] Each time the drive unit 7 works, it can control the top cover 8 to rotate 22.5°. The drive unit 7 can be controlled by the controller. When the drive unit is pressed, the top cover 8 rotates 22.5°. After the top cover 8 completes the 22.5° rotation, the drive unit 7 stops, so that the controller can be pressed again next time. During the process of the top cover 8 completing the 22.5° rotation, the drill bit in the drilling machine 5 is always in a high-speed rotating state to facilitate drilling the wheel rim 2 and to facilitate the drill bit to exit the hole. When the drive unit 7 stops, the drilling machine 5 also stops working, so that the operator can place or remove the wheel rim 2 on the fixing block 10 to ensure the safety of the operation.

[0038] The planetary gear reducer can have a reduction ratio of 10:1 to ensure that the torque output by the servo motor in the drive unit 7 can drive the top cover 8 to rotate stably when the top cover 8 and the column 6 are in cooperation. The time required for the top cover 8 to rotate 22.5° is about 1.5s-2.0s.

[0039] A powerful fan or high-pressure jetting device can be installed above the center of the device. When the drilling machine 5 drills a hole in the wheel rim 2, the debris generated can be blown away from the cover 3 and the top cover 8 in time, thereby preventing debris from entering between the guide rail 4 and the cover 3 and reducing the impact on the guide rail 4 and the cover 3.

[0040] Furthermore, the upper surface of the cover 3 is arranged with 16 round rods 17 in a circumferential array, one end of the guide rail 4 is provided with a connecting post 18, and also includes a tension spring 19. The two ends of the tension spring 19 are connected to the round rods 17 and the connecting post 18 respectively, and the tension spring 19 is always in a stretched state.

[0041] The tension spring 19 ensures that the column 6 always maintains close contact with the guide groove 9, thereby ensuring that all guide rails 4 can move uniformly and with high stability.

[0042] Furthermore, a roller 14 is rotatably connected to the outside of the column 6. The roller 14 is located inside the guide groove 9. By rotating the roller 14 inside the guide groove 9, the friction between the guide groove 9 and the column 6 can be reduced.

[0043] Both the drive unit 7 and the drilling machine 5 can be controlled by a PLC system.

[0044] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A bicycle wheel rim perforation device, characterized in that, include: Installation platform; An opening section is provided on a mounting platform and has 16 opening units, which can move synchronously. The positioning part is disposed on the opening part. The positioning part has four positioning units, which are respectively disposed on four of the opening units, and the included angle between two adjacent positioning units is 90°.

2. The bicycle wheel rim drilling device according to claim 1, characterized in that, The opening includes a cover mounted on a mounting platform. The upper surface of the cover has 16 slots, and a guide rail is slidably connected inside each slot. A drilling machine is mounted on one side of the upper surface of the guide rail, and a column is mounted on the other side of the upper surface of the guide rail. A drive unit is located inside the cover, and the output end of the drive unit penetrates through the cover. A top cover is mounted above the output end of the drive unit. A flower-shaped guide groove is formed on the lower surface of the top cover. The column is located inside the guide groove. The guide groove has 16 guide intervals. Each guide interval has two farthest points farthest from the center of the top cover and one nearest point closest to the center of the top cover. The central angle between two adjacent vertices is 22.5°.

3. The bicycle rim drilling device according to claim 2, characterized in that, The positioning part includes an L-shaped fixing block mounted on a guide rail. A notch is provided on the outer side of the bent part of the fixing block, and a clamping block is provided inside the notch. Two guide rods are provided on one side of the clamping block. A guide hole for the movement of the guide rods is provided inside the fixing block. A fixing rod is provided on one side of the clamping block, and the fixing rod passes through the fixing block. A baffle is provided at one end of the fixing rod, and a spring is sleeved on the fixing rod. The spring is located between the baffle and the fixing block.

4. The bicycle rim drilling device according to claim 2, characterized in that, The upper surface of the cover is arranged with 16 round rods in a circumferential array. One end of the guide rail is provided with a connecting post and a tension spring is also included. The two ends of the tension spring are respectively connected to the round rods and the connecting post, and the tension spring is always in a stretched state.

5. The bicycle rim drilling device according to claim 2, characterized in that, A roller is rotatably connected to the outside of the column, and the roller is located inside the guide groove.

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