Cutter for machining specific roughness
By designing the tool head structure and adjusting the height difference between the damage edge and the cutting edge, the problem that traditional tools cannot process workpieces with specific roughness is solved, and the processing and assembly sealing requirements of specific roughness is achieved, which enhances the versatility of the tool.
Patent Information
- Application Number
- CN202422042174.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-22
AI Technical Summary
Traditional tools have difficulty machining workpieces of specific roughness, especially those in the range of Ra1.6-3.2, resulting in assembly sealing problems.
A tool is designed, including a tool holder and a cutting head, with grooves and tool mounting grooves on the cutting head, installing cutting edges and damage edges, and adjusting the height difference between the damage edge and the cutting edge through through-type expansion joints and screws to achieve processing of specific roughness.
The machining of workpieces with specific roughness is realized, which meets the needs of workpiece assembly sealing, and improves the versatility of the tool, so that the roughness can be adjusted according to the needs.
Smart Images
Figure CN223129436U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a processing tool, in particular to a tool for processing a specific roughness. Background Art
[0002] In the mechanical processing industry, surface roughness is one of the important indicators to measure the surface quality of workpieces. The traditional concept holds that the lower the roughness value of the machined surface, the better, because a lower roughness usually brings better assembly sealing performance and longer service life of mechanical parts. In the past, the surface roughness of workpieces processed by ordinary PCD (polycrystalline diamond) tools could reach Ra1.6, which largely met the production requirements at that time.
[0003] With the rapid development of industrial technology and the continuous improvement of industry standards, the requirements for the surface roughness of workpieces in the field of mechanical processing are also changing. In some specific application scenarios, such as high-precision seals, bearing seats running at high speeds, etc., an overly smooth surface may instead lead to a decrease in assembly sealing performance, resulting in sealing problems such as oil leakage and air leakage, thereby affecting the overall performance and reliability of mechanical parts. Therefore, there has gradually emerged a demand for roughness values in the range of Ra1.6 - 3.2, that is, it is required to increase the surface roughness of workpieces within a certain range.
[0004] However, due to the limitations of the structure and materials of traditional tools, it is difficult to machine workpieces with specific roughness. Summary of the Utility Model
[0005] The purpose of the utility model is to solve the technical problem that traditional tools cannot machine workpieces with specific roughness, and to provide a tool for processing a specific roughness.
[0006] To solve the above technical problem, the technical solution provided by the utility model is as follows:
[0007] A tool for processing a specific roughness, comprising a tool shank and a tool tip fixed to the bottom end of the tool shank;
[0008] A plurality of grooves evenly distributed along the circumference are formed in the tool tip;
[0009] Tool mounting grooves are formed at the bottom of the side walls of the grooves of the tool tip, and one of the tool grooves is a damaged edge tool mounting groove;
[0010] Cutting edges are installed in the tool mounting grooves, and a damaged edge is installed in the damaged edge tool mounting groove.
[0011] Furthermore, a through-type expansion joint is formed in the damaged edge tool mounting groove of the tool tip, and a deformation buffer area is provided at the top of the through-type expansion joint;
[0012] A tightening screw and a spreading screw are successively installed on the outer side of the tool bit from top to bottom; the ends of the tightening screw and the spreading screw both extend into the through-type expansion joint;
[0013] The end of the spreading screw abuts against the inner wall of the through-type expansion joint;
[0014] The end of the tightening screw is threadedly connected to the inner wall of the through-type expansion joint.
[0015] Further, the distance between the spreading screw and the bottom of the tool bit is L1; the distance between the tightening screw and the spreading screw along the axial direction of the tool bit is L2; the distance between the tightening screw and the spreading screw along the radial direction of the tool bit is L3; the height of the through-type expansion joint is L4.
[0016] Further, the distance L1 between the spreading screw and the bottom of the tool bit = 4 mm; the distance L2 between the tightening screw and the spreading screw along the axial direction of the tool bit = 8 mm; the distance L3 between the tightening screw and the spreading screw along the radial direction of the tool bit = 2 mm.
[0017] Further, the height L4 of the through-type expansion joint = 0.75 - 0.8d; where d is the rotation radius of the cutting edge.
[0018] Further, the height difference between the cutting edge and the breaking edge is H, and H = 0.005 - 0.007 mm.
[0019] Further, the tightening screw is an internal hexagonal socket head cap screw, and the spreading screw is an internal hexagonal button head screw.
[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0021] 1. The tool for machining a specific roughness provided by the present utility model realizes the machining of a workpiece with a specific roughness through the cooperation of the cutting edge and the breaking edge, so as to meet the requirement of the assembly sealing performance during the workpiece assembly.
[0022] 2. The tool for machining a specific roughness provided by the present utility model can adjust the gap of the through-type expansion joint by rotating the tightening screw or the spreading screw by providing a through-type expansion joint on the tool bit and combining the tightening screw and the spreading screw, so as to achieve the purpose of adjusting the height difference between the breaking edge and the cutting edge, enabling the tool to machine workpieces with different roughnesses according to customer requirements, and enhancing the versatility of the tool. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a schematic structural diagram of an embodiment of the present utility model Figure 1 ;
[0024] Figure 2 is a schematic structural diagram of an embodiment of the present utility model Figure 1;
[0025] Figure 3 for Figure 2 Bottom view of
[0026] Figure 4 This is a size comparison diagram of the breaking edge and the cutting edge in the embodiment of the utility model.
[0027] Explanation of the reference numerals: 1 is a tool handle, 2 is a tool head, 3 is a groove, 4 is a cutting edge, 5 is a breaking edge, 6 is a through-type expansion joint, 7 is a deformation buffer zone, 8 is a tightening screw, and 9 is a spreading screw. DETAILED DESCRIPTION
[0028] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] like Figure 1 and Figure 2 As shown, a tool for processing a workpiece with a specific roughness includes a tool handle 1 and a tool head 2 fixed to the bottom end of the tool handle 1; a plurality of grooves 3 evenly distributed along the circumference are opened on the tool head 2; a tool mounting groove is opened at the bottom of the side wall of the groove 3 of the tool head 2, and in order to enable the tool to process a workpiece with a specific roughness, one of the tool grooves is a breaking blade tool mounting groove; a cutting edge 4 is installed in the tool mounting groove, and a breaking blade 5 is installed in the breaking blade tool mounting groove, and the processing of the workpiece surface with a specific roughness is achieved through the breaking blade 5.
[0030] In order to enable the tool to achieve different roughness processing, such as Figure 1 and Figure 3 As shown, a through expansion joint 6 is provided in the installation groove of the breaking blade of the cutter head 2. In order to prevent the cutter head 2 from being damaged by the through expansion joint 6 during the process of the gap of the through expansion joint 6 increasing or decreasing, a deformation buffer zone 7 is provided on the top of the through expansion joint 6. A tightening screw 8 and a spreading screw 9 are sequentially installed on the outside of the cutter head 2 from top to bottom. The tightening screw 8 is a hexagon socket cylindrical head screw, and the spreading screw 9 is a hexagon socket headless screw. The ends of the tightening screw 8 and the spreading screw 9 are both extended into the through expansion joint 6. The end of the spreading screw 9 abuts against the inner wall of the through expansion joint 6. The end of the tightening screw 8 is threadedly connected to the inner wall of the through expansion joint 6.
[0031] like Figure 2 , Figure 3 and Figure 4As shown, the distance L1 between the expansion screw 9 and the bottom of the tool bit 2 is 4 mm; the distance L2 between the tightening screw 8 and the expansion screw 9 along the axial direction of the tool bit 2 is 8 mm; the distance L3 between the tightening screw 8 and the expansion screw 9 along the radial direction of the tool bit 2 is 2 mm; the height L4 of the through-type expansion joint 6 is 0.75 - 0.8d; where d is the rotation radius of the cutting edge 5; the height difference between the cutting edge 5 and the cutting edge 4 is H, and H = 0.007 mm.
[0032] For the tool for machining a specific roughness provided by the present utility model, during use, the tool shank 1 is connected to the spindle of the machine tool. According to the machining requirements of the customer, by rotating the tightening screw 8, the gap of the through-type expansion joint 6 can be reduced, further causing the position of the cutting edge 5 on the tool bit 2 to move towards the center of the tool bit 2, that is, the height difference between the cutting edge 5 and the cutting edge 4 is reduced, so as to machine parts with a low roughness value; or by rotating the expansion screw 9, the gap of the through-type expansion joint 6 can be increased, further causing the position of the cutting edge 5 on the tool bit 2 to move away from the center of the tool bit 2, that is, the height difference between the cutting edge 5 and the cutting edge 4 is increased, so as to machine parts with a high roughness value.
[0033] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any change or replacement within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims
1. A tool for machining a specific roughness, characterized in that: It includes a tool handle (1) and a tool tip (2) fixed to the bottom end of the tool handle (1); A plurality of grooves (3) evenly distributed along the circumference are formed on the tool tip (2); A tool installation groove is formed at the bottom of the side wall of the groove (3) of the tool tip (2), and one of the tool grooves is a destruction edge tool installation groove; A cutting edge (4) is installed in the tool installation groove, and a destruction edge (5) is installed in the destruction edge tool installation groove.
2. The tool for machining a specific roughness according to claim 1, characterized in that: A through-type expansion joint (6) is formed in the destruction edge tool installation groove of the tool tip (2), and a deformation buffer zone (7) is provided at the top of the through-type expansion joint (6); A tightening screw (8) and a spreading screw (9) are sequentially installed on the outer side of the tool tip (2) from top to bottom; the ends of the tightening screw (8) and the spreading screw (9) both extend into the through-type expansion joint (6); The end of the spreading screw (9) abuts against the inner wall of the through-type expansion joint (6); The end of the tightening screw (8) is threadedly connected to the inner wall of the through-type expansion joint (6).
3. The tool for machining a specific roughness according to claim 2, wherein: The distance between the spreading screw (9) and the bottom of the tool tip (2) is L1; the distance between the tightening screw (8) and the spreading screw (9) along the axial direction of the tool tip (2) is L2; the distance between the tightening screw (8) and the spreading screw (9) along the radial direction of the tool tip (2) is L3; the height of the through-type expansion joint (6) is L4.
4. The tool for machining a specific roughness according to claim 3, characterized in that: The distance L1 between the spreading screw (9) and the bottom of the tool tip (2) is 4 mm; the distance L2 between the tightening screw (8) and the spreading screw (9) along the axial direction of the tool tip (2) is 8 mm; the distance L3 between the tightening screw (8) and the spreading screw (9) along the radial direction of the tool tip (2) is 2 mm.
5. The tool for machining a specific roughness according to claim 3, characterized in that: The height L4 of the through-type expansion joint (6) is 0.75 - 0.8d; where d is the rotation radius of the destruction edge (5).
6. The tool for machining a specific roughness according to claim 1, characterized in that: The height difference between the destruction edge (5) and the cutting edge (4) is H, and H = 0.005 - 0.007 mm.
7. The tool for machining a specific roughness according to any one of claims 2 to 4, characterized in that: The tightening screw (8) is an internal hexagonal socket head cap screw, and the spreading screw (9) is an internal hexagonal socket headless screw.