Drilling tool with three-in-one function

Abstract

The utility model discloses a drilling cutter with three-in-one function, which comprises a cutter bar and a three-in-one drill bit mechanism positioned at the front end of the cutter bar, the three-in-one drill bit mechanism comprises a rear drill bit, a middle drill bit and a front drill bit which are coaxially arranged from back to front edge, and the outer diameters of the rear drill bit, the middle drill bit and the front drill bit are sequentially decreased. The drill bit is used for drilling and forming stepped holes, the cutter bar, the rear drill bit, the middle drill bit and the front drill bit are integrally formed, and a flat tail used for increasing torque is further arranged at the tail end of the cutter bar. The three tool bits with different sizes are simultaneously designed on the same tool and are assembled with a clamping head of drilling equipment before drilling, then the drilling equipment is used for driving the three-in-one drill bit mechanism to conduct drilling treatment, the step hole drilling procedure is completed through one-time machining stroke, the machining period is shortened, and therefore production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of motorcycle wheel hub drilling tools, specifically a three-in-one drilling tool. Background Technology

[0002] The wheel hub is the rotating part of the wheel, connected to the inner profile of the tire by a column; it is the metal component that supports the tire and is mounted on the axle, and is widely used in motorcycles. Drilling holes in the wheel hub casting is an indispensable step in wheel hub manufacturing.

[0003] Currently, the holes on wheel hubs used for mounting bolts and other locking accessories are generally designed as stepped holes (see reference). Figure 2 As shown, bolts, washers, etc. can be accommodated in the stepped holes, which serves to improve aesthetics and increase connection strength. However, since the dimensions of each hole in the stepped holes are different, multiple tool changes are required during product processing, which affects production efficiency. Moreover, since the tool heads are designed independently, the production cost of the tools will also increase.

[0004] In view of this, a drilling tool with three functions is proposed. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a drilling tool with three functions in one.

[0006] The technical solution adopted by this utility model is as follows: a three-in-one drilling tool, including a tool holder and a three-in-one drill bit mechanism located at the front end of the tool holder, wherein the three-in-one drill bit mechanism includes a rear drill bit, a middle drill bit and a front drill bit arranged coaxially from back to front, and the outer diameters of the rear drill bit, the middle drill bit and the front drill bit are arranged in descending order to realize the drilling and forming of stepped holes.

[0007] In a preferred embodiment, the tool holder, rear drill bit, middle drill bit, and front drill bit are integrally formed parts.

[0008] In a preferred embodiment, the front end of the rear drill bit has a tapered drill tip.

[0009] In a preferred embodiment, the tool holder and the three-in-one drill bit mechanism are made of high-speed steel.

[0010] In a preferred embodiment, the tail end of the tool holder is further provided with a flat tail for increasing torque.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: three different sized cutting heads are designed on one cutting tool at the same time, and then the drilling equipment drives the three-in-one drilling mechanism to perform drilling. Drilling operations of different hole diameters and positions can be completed simultaneously in one processing stroke, which reduces the processing cycle and thus improves production efficiency. Moreover, it can be achieved with only one cutting tool, which can also greatly reduce the production cost of the cutting tool. Attached Figure Description

[0012] Figure 1 This is a cross-sectional plan view of the overall structure of this utility model;

[0013] Figure 2 This is a partial cross-sectional planar structural diagram showing the location of the holes on the wheel hub workpiece.

[0014] The markings in the diagram are: 1-tool holder, 2-drill bit, 3-intermediate drill bit, 4-front drill bit, 5-flat tail. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0016] A three-in-one drilling tool, as shown in the reference Figure 1-2 The system includes a tool holder 1 and a three-in-one drill bit mechanism located at the front end of the tool holder 1. The three-in-one drill bit mechanism includes a rear drill bit 2, a middle drill bit 3, and a front drill bit 4, which are coaxially arranged from back to front. The outer diameters of the rear drill bit 2, the middle drill bit 3, and the front drill bit 4 decrease sequentially. This is used to achieve the drilling of stepped holes. Three different sized tool heads are designed on one tool simultaneously. Before drilling, the tool is assembled with the clamping head of the drilling equipment (not shown in the figure). Then, the drilling equipment drives the three-in-one drill bit mechanism to perform drilling. Drilling operations of different hole diameters and positions can be completed simultaneously in one processing stroke (see reference). Figure 2 As shown in the figure, the processing cycle is shortened, thereby improving production efficiency. Moreover, it can be achieved with only one tool, which can also greatly reduce the production cost of the tool.

[0017] Among them, the rear drill bit 2, the middle drill bit 3, and the front drill bit 4 are also provided with multiple continuous chip removal grooves in the circumferential direction (not shown in the figure).

[0018] Furthermore, the tool holder 1, rear drill bit 2, middle drill bit 3, and front drill bit 4 are integrally formed parts. The advantage of integrally formed parts is that while saving manufacturing costs, it can also ensure the combined strength between the tool holder 1 and the three-in-one drill bit mechanism, and it is not easy to break or crack.

[0019] Furthermore, the front end of the rear drill bit 2 has a tapered drill tip, which can form a sharp cutting area and reduce friction when drilling into the product.

[0020] Furthermore, the tool holder 1 and the three-in-one drill bit mechanism are made of high-speed steel. High-speed steel has the characteristics of high hardness, high wear resistance, high heat resistance, and red hardness. The advantage of red hardness is that the cutting edge has the ability to resist softening when it is red-hot during high-speed cutting, thereby ensuring the overall drilling quality.

[0021] Furthermore, the tail end of the tool holder 1 is also provided with a flat tail 5 for increasing torque.

[0022] In summary, by designing three different sized cutting heads onto a single tool, drilling operations for holes of different diameters and positions can be completed simultaneously, reducing the processing cycle and thus improving production efficiency. Moreover, this can be achieved with only one tool, which also greatly reduces the production cost of the tool.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drilling tool with three functions in one, characterized in that, The tool includes a tool holder and a three-in-one drill bit mechanism located at the front end of the tool holder. The three-in-one drill bit mechanism includes a rear drill bit, a middle drill bit, and a front drill bit arranged coaxially from back to front. The outer diameters of the rear drill bit, the middle drill bit, and the front drill bit decrease sequentially to achieve the drilling and forming of stepped holes.

2. The drilling tool with three functions as described in claim 1, characterized in that: The tool holder, rear drill bit, middle drill bit, and front drill bit are all integrally formed parts.

3. A drilling tool with three functions as described in claim 1, characterized in that: The front end of the rear drill bit has a tapered drill tip.

4. A drilling tool with three functions as described in claim 1, characterized in that: The cutter bar and the three-in-one drill bit mechanism are made of high-speed steel.

5. A drilling tool with three functions as described in claim 1, characterized in that: The tail end of the tool holder is also provided with a flat tail for increasing torque.

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