Bottom hole tapping and chamfering integrated cutter in mobile phone middle frame CNC machining

By designing an integrated CNC machining tool for the mobile phone mid-frame, the problem of frequent tool changes in traditional CNC machining of mobile phone mid-frames is solved, achieving efficient and low-error machining results.

CN223833488UActive Publication Date: 2026-01-27JIANGXI LINGFENG ELECTRONIC CO LTD
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Patent Information

Application Number
CN202423311953.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2026-01-27
Estimated Expiration
2034-12-31

AI Technical Summary

Technical Problem

Traditional CNC machining of mobile phone frames requires changing tools in stages, which leads to low machining efficiency, large errors, and increased workload for workers.

Method used

Design a one-piece tool for bottom hole tapping and chamfering in CNC machining of mobile phone mid-frame. The tool bar connects the first, second and third cutting edges to achieve integrated machining, which respectively performs chamfering, tapping and bottom hole drilling, reducing tool changing steps.

Benefits of technology

It achieves efficient and integrated CNC machining of mobile phone mid-frames, reducing machining errors and costs, and improving machining convenience.

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Abstract

The utility model discloses a bottom hole tapping and chamfering integrated cutter in mobile phone middle frame CNC machining, which belongs to the technical field of cutters, and comprises a cutter bar, one end of the cutter bar is fixedly connected with a cutter, the cutter is composed of a first cutting edge, a second cutting edge, a third cutting edge and two connecting rods, the first cutting edge is fixedly connected to one end of the cutter bar, and the second cutting edge is fixedly connected to the other end of the cutter bar. The second cutting edge is fixedly connected with the first cutting edge through one connecting rod, the third cutting edge is fixedly connected with the second cutting edge through the other connecting rod, the cutter is conveniently installed and fixed through the cutter bar, and the first cutting edge, the second cutting edge and the third cutting edge in the cutter are connected through the two connecting rods. According to the CNC machining device, integration of bottom hole opening, tapping and chamfering in CNC machining of the middle frame of the mobile phone is achieved, the tool changing procedures of workers are reduced, machining errors are reduced, and meanwhile the machining cost is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and more specifically, to an integrated tool for tapping and chamfering bottom holes in CNC machining of mobile phone mid-frames. Background Technology

[0002] CNC machining of the mobile phone frame is a precision machining process that utilizes computer digital control.

[0003] The screw holes on the internal structure of the mobile phone frame require extremely high assembly precision. In traditional CNC machining, they are typically machined using three tools: first, a drill bit is used to drill the pilot hole; then, a tap is used to tap the threads; and finally, a chamfering tool is used to chamfer the screw hole. This machining method has the following problems:

[0004] 1. Changing cutting tools affects machining efficiency and can easily increase errors;

[0005] 2. The addition of a tool-changing step increases the workload for workers. Utility Model Content

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide an integrated tool for tapping and chamfering bottom holes in CNC machining of mobile phone mid-frames, aiming to solve the problems mentioned in the background art.

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A one-piece tool for tapping and chamfering bottom holes in CNC machining of mobile phone mid-frames, comprising:

[0009] A tool holder, one end of which is fixedly connected to a tool. The tool consists of a first cutting edge, a second cutting edge, a third cutting edge, and two connecting rods. The first cutting edge is fixedly connected to one end of the tool holder. The second cutting edge is fixedly connected to the first cutting edge through one of the connecting rods. The third cutting edge is fixedly connected to the second cutting edge through the other connecting rod.

[0010] In a preferred embodiment of this utility model, the diameter of the first blade is larger than that of the second blade, and the diameter of the second blade is larger than that of the third blade.

[0011] As a preferred embodiment of this utility model, the first cutting edge is a chamfered edge.

[0012] As a preferred embodiment of this utility model, the second cutting edge is a tapping edge, and a tap is fixedly installed on the outer surface of the second cutting edge.

[0013] As a preferred embodiment of this utility model, the third cutting edge is a bottom hole drilling edge, and its diameter is between 1.25 and 1.3.

[0014] In a preferred embodiment of this invention, the diameter of each connecting rod is smaller than that of the third cutting edge. Beneficial effects

[0015] Compared with existing technologies, this utility model provides an integrated tool for tapping and chamfering bottom holes in CNC machining of mobile phone mid-frames, which has the following beneficial effects:

[0016] 1. In this solution, the tool holder facilitates the installation and fixation of the tool. The first, second and third cutting edges of the tool are connected by two connecting rods, realizing the integration of bottom hole opening, tapping and chamfering in the CNC machining of the mobile phone frame. This reduces the number of tool changing procedures for workers, reduces machining errors, and reduces machining costs.

[0017] 2. In this design, the diameters of the first, second, and third cutting edges decrease sequentially, facilitating the sequential drilling, tapping, and chamfering of the cutting tools and improving their ease of use. The connecting rod diameter is smaller than that of the third cutting edge, allowing for the preparation of clearance spaces during machining and improving the effectiveness of the cutting tools. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a second-view perspective perspective view of the present invention;

[0020] Figure 3 This is a cross-sectional view of the present invention.

[0021] Explanation of the labels in the diagram:

[0022] 1. Tool holder; 2. Tool; 201. First cutting edge; 202. Second cutting edge; 203. Third cutting edge; 204. Connecting rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Example

[0024] Please see Figure 1-3 A single-piece tool for tapping and chamfering bottom holes in CNC machining of a mobile phone frame, comprising:

[0025] A tool holder 1 is provided, and a tool 2 is fixedly connected to one end of the tool holder 1. The tool 2 consists of a first cutting edge 201, a second cutting edge 202, a third cutting edge 203, and two connecting rods 204. The first cutting edge 201 is fixedly connected to one end of the tool holder 1. The second cutting edge 202 is fixedly connected to the first cutting edge 201 through one of the connecting rods 204. The third cutting edge 203 is fixedly connected to the second cutting edge 202 through the other connecting rod 204.

[0026] In this embodiment, the tool holder 1 facilitates the installation and fixation of the tool 2. The first cutting edge 201, the second cutting edge 202 and the third cutting edge 203 in the tool 2 are connected by two connecting rods 204, realizing the integration of bottom hole opening, tapping and chamfering in the CNC machining of the mobile phone frame, reducing the tool changing process for workers, reducing machining errors, and reducing machining costs.

[0027] Please refer to the specific details. Figure 3 As shown, the diameter of the first cutting edge 201 is larger than that of the second cutting edge 202, and the diameter of the second cutting edge 202 is larger than that of the third cutting edge 203.

[0028] In this embodiment, the diameters of the first cutting edge 201, the second cutting edge 202, and the third cutting edge 203 decrease sequentially, which facilitates the tool 2 to perform drilling, tapping, and chamfering in sequence, thereby improving the ease of use of the tool 2.

[0029] Please refer to the specific details. Figure 1-2 As shown, the first cutting edge 201 is a chamfered edge.

[0030] In this embodiment, the first cutting edge 201 is a chamfered blade, and its blade angle is A90.

[0031] Please refer to the specific details. Figure 1-2 As shown, the second cutting edge 202 is a tapping edge, and a tap is fixedly installed on the outer surface of the second cutting edge 202.

[0032] In this embodiment, the second cutting edge is a tapping edge, and its tap spacing is 3p.

[0033] Please refer to the specific details. Figure 1-2 As shown, the third cutting edge 203 is the bottom hole drilling edge, and its diameter is between 1.25 and 1.3.

[0034] In this embodiment, the third cutting edge 203 is a bottom hole drilling cutting edge, which uses a drill bit with a diameter of 1.29.

[0035] Please refer to the specific details. Figure 3 As shown, the diameter of each connecting rod 204 is smaller than that of the third cutting edge 203.

[0036] In this embodiment, the diameter of the connecting rod 204 is smaller than that of the third cutting edge 203, which facilitates the preparation of clearance space during processing and improves the performance of the tool 2.

[0037] Working principle: When in use, the tool holder 1 is installed in a suitable position on the machining center. The drive device drives the tool holder 1 to rotate and descend, which in turn drives the tool 2 to rotate and descend. At this time, the third cutting edge 203 first approaches the mobile phone frame to be processed and drills the bottom hole in the frame. As it continues to rotate and descend, the second cutting edge 202 taps the inner wall of the drilled bottom hole. As it continues to rotate and descend, the first cutting edge 201 chamfers the opening of the bottom hole. After the processing is completed, the tool holder 1 is driven to reverse and rise, and the tool 2 can be removed.

[0038] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A one-piece tool for tapping and chamfering bottom holes in CNC machining of a mobile phone frame, characterized in that, include: A tool holder (1) is fixedly connected to one end of a tool (2). The tool (2) consists of a first cutting edge (201), a second cutting edge (202), a third cutting edge (203), and two connecting rods (204). The first cutting edge (201) is fixedly connected to one end of the tool holder (1). The second cutting edge (202) is fixedly connected to the first cutting edge (201) through one of the connecting rods (204). The third cutting edge (203) is fixedly connected to the second cutting edge (202) through the other connecting rod (204).

2. The integrated tool for tapping and chamfering bottom holes in CNC machining of a mobile phone frame according to claim 1, characterized in that: The diameter of the first cutting edge (201) is larger than that of the second cutting edge (202), and the diameter of the second cutting edge (202) is larger than that of the third cutting edge (203).

3. The integrated tool for tapping and chamfering bottom holes in CNC machining of a mobile phone frame according to claim 2, characterized in that: The first cutting edge (201) is a chamfered edge.

4. The integrated tool for tapping and chamfering bottom holes in CNC machining of a mobile phone frame according to claim 3, characterized in that: The second cutting edge (202) is a tapping edge, and a tap is fixedly installed on the outer surface of the second cutting edge (202).

5. The integrated tool for tapping and chamfering bottom holes in CNC machining of a mobile phone frame according to claim 4, characterized in that: The third cutting edge (203) is a bottom hole drilling edge, and its diameter is between 1.25 and 1.

3.

6. The integrated tool for tapping and chamfering bottom holes in CNC machining of a mobile phone frame according to claim 5, characterized in that: The diameter of each of the connecting rods (204) is smaller than that of the third cutting edge (203).