A chamfering tool for chamfering the rear end of a metal pipe for an automobile after blanking
By optimizing the structure and design of the chamfering tool, the problem of existing tools being unable to accommodate multiple specifications and angles has been solved, achieving efficient, low-resistance cutting and high-quality chamfering, extending tool life, and adapting to the needs of automated production.
Patent Information
- Application Number
- CN202522203628.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-18
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-18
AI Technical Summary
Existing automotive metal pipe chamfering tools have a simple structure, making it difficult to accommodate chamfering requirements of different specifications and angles. The unreasonable cutting edge design leads to high cutting resistance, short tool life, and complicated adjustment and replacement. The lack of a reasonable chip removal design makes it easy for chip blockage or chipping to occur.
A chamfering tool comprising a tool body, a main cutting edge, a secondary cutting edge, a main flank, and a secondary flank was designed. The tool structure was optimized to adapt to chamfering requirements of multiple specifications and angles. High-efficiency cooling and chip removal were achieved by setting water spray holes and chip removal grooves on the tool body.
It enables multi-specification tool compatibility and multi-angle chamfering, reduces cutting resistance, improves workpiece surface finish, extends tool life, simplifies adjustment and replacement processes, improves automated production efficiency, prevents chipping and chipping, and ensures machining quality.
Smart Images

Figure CN224673919U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a chamfering tool for chamfering the rear end of automotive metal pipes after cutting. Background Technology
[0002] Automotive metal piping is a core component of automotive powertrain, braking, and air conditioning systems. It is primarily made of high-strength metals such as stainless steel and aluminum alloy, and is mainly used to transport media such as fuel, brake fluid, and coolant. During production, metal piping is first cut to a specified length using cutting equipment, and then the ends are chamfered. The chamfering process removes burrs and sharp edges produced after cutting, preventing damage to seals, hoses, and other components during subsequent assembly. It also ensures precise connection between the piping and connectors, preventing media leakage.
[0003] Currently, conventional chamfering tools are commonly used in the chamfering process of metal pipes, shafts, or plates. However, the following problems exist: the tool structure is simple and it is difficult to accommodate chamfering requirements of different specifications and angles; the cutting edge design is unreasonable, resulting in high cutting resistance, short tool life, and difficulty in guaranteeing workpiece surface quality; adjustment and replacement are complicated, affecting the efficiency of automated production lines; traditional chamfering tools lack reasonable chip removal design, which easily leads to chip clogging or chipping.
[0004] Therefore, it is necessary to provide a chamfering tool for chamfering the rear end of automotive metal pipe blanks to solve the above-mentioned technical problems. Utility Model Content
[0005] This utility model provides a chamfering tool for chamfering the rear end of automotive metal pipes after blanking, which solves the problems of simple tool structure, unreasonable cutting edge design, and complicated adjustment and replacement.
[0006] To solve the above-mentioned technical problems, this utility model provides a chamfering tool for chamfering the rear end of automotive metal pipes after blanking, comprising:
[0007] Blade body;
[0008] The front end is located at one end of the blade body;
[0009] The main cutting edge is disposed at one end of the tool body;
[0010] A secondary cutting edge is provided at one end of the tool body;
[0011] The main rear end is located at one end of the blade body;
[0012] The secondary rear end is located at one end of the blade body.
[0013] Preferably, the secondary cutting edge is disposed on one side of the main cutting edge.
[0014] Preferably, the main rear end is located on one side of the secondary rear end.
[0015] Preferably, the main cutting edge is located at the bottom of the secondary cutting edge, and the secondary cutting edge is located at the bottom of the main cutting edge.
[0016] Preferably, the blade body has multiple water spray holes on its side and a water inlet hole inside the blade body.
[0017] Preferably, the water inlet and the plurality of water spray holes are interconnected.
[0018] Preferably, the side of the blade body is provided with a chip removal groove.
[0019] Compared with related technologies, the chamfering tool provided by this utility model for chamfering the rear end of automotive metal pipe blanks has the following advantages:
[0020] This utility model provides a chamfering tool for chamfering the rear end of automotive metal pipe blanks. Through the coordinated operation of the tool body, front face, main cutting edge, secondary cutting edge, main rear face, and secondary rear face, a single tool can handle multiple chamfering processes due to its multi-specification tool body and multi-angle main cutting edge design. The cooperation between the main and secondary cutting edges results in low cutting resistance and high workpiece surface finish. The optimized blade shape and chip removal structure significantly reduce wear and chipping risks. The tool body structure is suitable for quick clamping and replacement on automated lines / CNC machine tools, improving equipment uptime. Optimized chip removal grooves and cutting edge angles effectively prevent chip clogging and machining abnormalities. Attached Figure Description
[0021] Figure 1 A schematic diagram of the structure of a first embodiment of a chamfering tool for chamfering the rear end of automotive metal pipes provided by this utility model;
[0022] Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below;
[0023] Figure 3 A schematic diagram of the structure of a second embodiment of a chamfering tool for chamfering the rear end of automotive metal pipes provided by this utility model;
[0024] Figure 4 for Figure 3 The diagram shows a top view of the structure.
[0025] Figure 5 This is a schematic diagram of the third embodiment of a chamfering tool for chamfering the rear end of automotive metal pipes provided by this utility model.
[0026] The following are the labels in the diagram: 1. Tool body, 2. Front edge, 3. Main cutting edge, 4. Secondary cutting edge, 5. Main flank edge, 6. Secondary flank edge, 7. Water spray hole, 8. Water inlet hole, 9. Chip removal groove. Detailed Implementation
[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0028] First Embodiment
[0029] Please refer to the following: Figure 1 , Figure 2 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a chamfering tool for chamfering the rear end of automotive metal pipes provided by this utility model; Figure 2 for Figure 1 The enlarged schematic diagram of part A is shown.
[0030] A chamfering tool for chamfering the rear end of automotive metal pipe blanking, comprising: a tool body 1;
[0031] Front 2, the front 2 is disposed at one end of the blade body 1;
[0032] The main cutting edge 3 is disposed at one end of the tool body 1;
[0033] A secondary cutting edge 4 is provided at one end of the tool body 1;
[0034] Main rear end 5, the main rear end 5 is disposed at one end of the blade body 1;
[0035] Sub-rear end 6, which is disposed at one end of the blade body 1.
[0036] The secondary cutting edge 4 is disposed on one side of the main cutting edge 3.
[0037] The main rear end 5 is located on one side of the secondary rear end 6.
[0038] The main cutting edge 5 is located at the bottom of the secondary cutting edge 4, and the secondary cutting edge 6 is located at the bottom of the main cutting edge 3.
[0039] Tool body 1: Cylindrical main body, with the cutting area at the end and the clamping part at the rear end;
[0040] Main cutting edge 3: Located in a ring at the front end, its angle and position are optimized to ensure cutting efficiency and surface quality;
[0041] Secondary cutting edge 4: Located on both sides of the main cutting edge 3, it plays a role in dressing and assisting cutting, improving cutting smoothness and workpiece accuracy;
[0042] Main back face 5 and secondary back face 6: These are the back faces formed by the main and secondary cutting edges, respectively, to form a reasonable back angle, ensure smooth chip removal and reduce wear.
[0043] The first two lines: The rake face formed by cutting intersects with the main cutting edge and the secondary cutting edge, determining the direction of chip flow;
[0044] According to the chamfering requirements of different pipe fittings or shaft parts, chamfering cutters of corresponding size and angle can be selected. After the cutter body 1 is clamped on the spindle of the automatic line, the workpiece is fed into the processing position, and the cutter body 1 rotates and feeds to complete the chamfering. The main and secondary cutting edges work together to achieve efficient and high-quality chamfering process. When changing products or specifications, only the cutter body 1 needs to be replaced or the fixture needs to be adjusted. It is suitable for use in batch or multi-variety automated production lines.
[0045] The working principle of the chamfering tool for chamfering the rear end of automotive metal pipes provided by this utility model is as follows:
[0046] When in use, the tool body 1 is clamped on the spindle of an automatic line or CNC equipment, and the main cutting edge 3 performs efficient chamfering. The secondary cutting edge 4 works with the main cutting edge 3 to assist in finishing, effectively improving the chamfering accuracy and surface quality. The optimized clearance angle and chip groove ensure smooth chip removal during the cutting process, preventing chip accumulation and tool burning. The tool is adapted to a quick-change clamping structure to meet the needs of multi-variety small batch and continuous operation of automatic lines. Depending on different working conditions, different parameters of the tool can be changed to meet the chamfering requirements of multiple angles and specifications.
[0047] Compared with related technologies, the chamfering tool provided by this utility model for chamfering the rear end of automotive metal pipe blanks has the following advantages:
[0048] The tool body 1, front face 2, main cutting edge 3, secondary cutting edge 4, main flank edge 5, and secondary flank edge work together in a coordinated manner. The multi-specification tool body 1 and multi-angle main cutting edge 3 design allow a single tool to handle various chamfering processes. The combination of the main cutting edge 3 and secondary cutting edge 4 results in low cutting resistance and high workpiece surface finish. The optimized blade shape and chip removal structure significantly reduce wear and chipping risks. The tool body 1 structure is suitable for quick clamping and replacement on automated lines / CNC machine tools, improving equipment uptime. Optimized chip removal grooves and cutting edge angles effectively prevent chip clogging and machining abnormalities.
[0049] Second Embodiment
[0050] Please refer to the following: Figure 3 and Figure 4Based on the chamfering tool for chamfering the rear end of automotive metal tubing provided in the first embodiment of this application, the second embodiment of this application proposes another chamfering tool for chamfering the rear end of automotive metal tubing. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.
[0051] Specifically, the second embodiment of this application provides a chamfering tool for chamfering the rear end of automotive metal pipes, wherein the chamfering tool for chamfering the rear end of automotive metal pipes has multiple water spray holes 7 on the side of the tool body 1 and a water inlet hole 8 inside the tool body 1.
[0052] The water inlet 8 and the plurality of water spray holes 7 are interconnected.
[0053] The working principle of the chamfering tool for chamfering the rear end of automotive metal pipes provided by this utility model is as follows:
[0054] During chamfering, coolant flows in from the water inlet 8 inside the tool body 1 and is sprayed out through multiple water spray holes 7 that are connected to the water inlet 8, directly acting on the cutting area. This can cool the cutting parts such as the main cutting edge 3 and the secondary cutting edge 4 in a timely manner, reduce the heat generated during the cutting process, and prevent the tool from wearing or being damaged due to overheating. At the same time, it can also cool the workpiece and ensure the machining quality.
[0055] Compared with related technologies, the chamfering tool provided by this utility model for chamfering the rear end of automotive metal pipe blanks has the following advantages:
[0056] By opening water spray holes 7 on the side of the tool body 1 and water inlet holes 8 inside, and connecting the two, an effective cooling system is formed. This cooling system can accurately deliver coolant to the cutting area, effectively reduce the cutting temperature, extend the tool life, improve the cutting performance and processing efficiency of the tool, and at the same time reduce the problem of workpiece deformation caused by high temperature, further ensuring the machining accuracy and surface quality.
[0057] Third Embodiment
[0058] Please refer to the following: Figure 5 Based on the chamfering tool for chamfering the rear end of automotive metal tubing provided in the first embodiment of this application, the third embodiment of this application proposes another chamfering tool for chamfering the rear end of automotive metal tubing. The third embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the separate implementation of the first embodiment.
[0059] Specifically, the third embodiment of this application provides a chamfering tool for chamfering the rear end of automotive metal pipes, which differs in that the chamfering tool for chamfering the rear end of automotive metal pipes has a chip removal groove 9 on the side of the tool body 1.
[0060] The working principle of the chamfering tool for chamfering the rear end of automotive metal pipes provided by this utility model is as follows:
[0061] During the chamfering process, the chips generated by cutting are produced as the tool rotates and the cutting force is applied. The chip removal groove 9 on the side of the tool body 1 provides a channel for chip removal. The chips can be smoothly discharged from the cutting area along the chip removal groove 9, avoiding chip accumulation in the cutting area.
[0062] Compared with related technologies, the chamfering tool provided by this utility model for chamfering the rear end of automotive metal pipe blanks has the following advantages:
[0063] The chip removal structure is optimized by the chip removal groove 9 opened on the side of the tool body 1, which can effectively prevent chip clogging. The chips are discharged in time, reducing the friction and compression between the chips and the tool and the workpiece, reducing the risk of tool wear and chipping, and avoiding machining abnormalities caused by chip clogging. This ensures the smooth progress of the machining process and improves machining efficiency and product quality.
Claims
1. A chamfering tool for chamfering the rear end of automotive metal tubing during blanking, characterized in that, include: Blade body; The front end is located at one end of the blade body; The main cutting edge is disposed at one end of the tool body; A secondary cutting edge is provided at one end of the tool body; The main rear end is located at one end of the blade body; The secondary rear end is located at one end of the blade body.
2. A chamfering tool for chamfering the rear end of automotive metal pipes according to claim 1, characterized in that, The secondary cutting edge is located on one side of the main cutting edge.
3. A chamfering tool for chamfering the rear end of automotive metal pipes according to claim 1, characterized in that, The main rear end is located on one side of the secondary rear end.
4. A chamfering tool for chamfering the rear end of automotive metal pipes according to claim 1, characterized in that, The main cutting edge is located at the bottom of the secondary cutting edge, and the secondary cutting edge is located at the bottom of the main cutting edge.
5. A chamfering tool for chamfering the rear end of automotive metal pipes according to claim 1, characterized in that, The blade body has multiple water spray holes on its side and a water inlet hole inside its interior.
6. A chamfering tool for chamfering the rear end of automotive metal pipes according to claim 5, characterized in that, The water inlet and the plurality of water spray holes are interconnected.
7. A chamfering tool for chamfering the rear end of automotive metal pipes according to claim 1, characterized in that, The side of the blade body is provided with a chip removal groove.