Groove milling cutter for machining special-shaped groove
By using asymmetrically designed first and second blades, combined with locking and adjusting components, the problem of uneven groove surfaces in irregular groove machining is solved, achieving a smooth groove surface and low-cost machining effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-17
AI Technical Summary
In existing irregular groove machining, single-insert machining results in an uneven groove surface, forming arc-shaped convex lines, which affects the use of the workpiece.
The first and second blades are designed with asymmetry, and the blade tips are set asymmetrically to form complementary cutting profiles. The position and angle of the tool holder are adjusted by locking, axial adjustment and angle adjustment components to ensure a smooth groove surface.
It achieves smooth groove surface, reduces production costs, improves processing efficiency and waste chip removal efficiency, and supports the processing of irregular grooves of different depths and shapes.
Smart Images
Figure CN223997400U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of milling, and in particular to a milling cutter for machining irregular grooves. Background Technology
[0002] In the process of machining automotive parts, it is often necessary to process irregular grooves on standardized workpieces according to requirements. In the process, there are usually two forms: single-insert machining or symmetrical insert machining.
[0003] In existing production processes, to reduce production costs, symmetrical cutting tools are used to make point contact with the parts to be machined, such as... Figure 1 As shown, after the blade enters the inner hole of part 5, in order to avoid the blade colliding with the inner wall of part 5, the initial position of the blade tip is generally located in the middle of the groove 51 when the blade enters the machining position, so as to facilitate the adjustment of the blade. Then, the blade is controlled to move back and forth a certain distance to shape the groove 51.
[0004] However, during the processing, in order to avoid the opposite side of the blades colliding with the inner wall of part 5, a single blade cannot cross the middle position of the groove 51, which causes the intersection of the contours processed by the two sets of blades to form an arc convex line 52, resulting in the groove surface after the irregular groove is formed not being smooth enough, affecting the use of the workpiece. Utility Model Content
[0005] To address the shortcomings of existing technologies, the purpose of this application is to provide a milling cutter for machining irregular grooves, which has the advantages of low machining cost and smooth groove surface.
[0006] The objective of this application is achieved through the following technical solution:
[0007] A milling cutter for machining irregular grooves includes a main body, and symmetrically distributed tool holders are mounted on the bottom end of the main body. A first cutting tool is mounted on one side of the tool holder, and a second cutting tool is mounted on the other side of the tool holder. The tips of the first cutting tool and the second cutting tool are asymmetrically positioned.
[0008] By adopting the above technical solution, since the positions of the first and second blade tips are asymmetrically designed, the machining contours of the first and second blades will overlap in the middle of the groove during the machining process, thereby avoiding the appearance of arc convex lines in the machined groove and ensuring the smooth surface of the groove.
[0009] This application is further configured such that: the main body is provided with a fixing hole, the tool holder is provided with a mounting hole that penetrates the tool holder, and the inner side of the mounting hole is provided with a locking member that is detachably connected to the fixing hole.
[0010] By adopting the above technical solution, a standardized tool holder can be attached to the main body, making it easy to replace or adjust the tool holder.
[0011] This application further specifies that: an installation groove is provided on the main body near the bottom, a chip removal groove connected to the installation groove is provided on the side wall of the main body, and a liquid outlet hole communicating with the interior of the main body is provided at the bottom of the chip removal groove.
[0012] By adopting the above technical solution, the chip removal groove can quickly remove the waste chips generated by milling from the workpiece. The design of the liquid outlet hole not only facilitates the cooling of the machining area by the coolant, but also guides the waste chips through the coolant, thereby improving the waste chip removal efficiency and avoiding excessive heat in the machining area that would affect the machining effect.
[0013] This application further specifies that: a tool groove is provided at the bottom end of the tool holder, and the first blade or the second blade is installed inside the tool groove.
[0014] By adopting the above technical solution, both the first and second blades are standardized blades, resulting in lower replacement costs and convenient replacement on the tool holder.
[0015] This application further specifies that the radius of rotation at the tip of the first blade and the tip of the second blade have a difference of 0.1-0.5 mm.
[0016] By adopting the above technical solution, the difference between the rotation radii of the first and second blades is controlled within a very small range, which can ensure a smooth groove surface while guaranteeing sufficient machining width.
[0017] This application further specifies that the mounting hole is an oblong hole.
[0018] By adopting the above technical solution, the tool holder can move on the outside of the locking member, which facilitates the adjustment and control of the axial displacement or tilt angle of the tool holder.
[0019] This application further specifies that: the top of the tool holder is threadedly connected to an axial adjustment member for adjusting its vertical height on the main body, and the top end of the axial adjustment member abuts against the main body.
[0020] By adopting the above technical solution, the rotating axial adjustment component can push the tool holder to slide in the mounting groove, and adjust the machining depth of the first and second cutting tools.
[0021] This application is further configured such that: an adjustment hole is provided on the side wall of the tool holder, two adjustment holes are distributed on the upper and lower sides of the mounting hole, and an angle adjustment component for adjusting the angle between the tool holder and the main body is threadedly connected to the inner side of the adjustment hole, and the end of the angle adjustment component abuts against the main body.
[0022] By adopting the above technical solution, the rotating adjustment component can adjust the tilt angle of the tool holder and the machining angle of the first and second cutting blades.
[0023] In summary, the beneficial technical effects of this application are as follows:
[0024] 1. The first and second inserts adopt an asymmetrical structure. The first and second inserts have different machining diameters, cutting angles or cutting edges. During the milling process, they can form complementary cutting profiles to ensure that the machined groove surface is smooth. At the same time, the first and second inserts use standard inserts, which are easy to replace and have low production costs.
[0025] 2. During the milling process, the tool holder is moved axially by rotating the axial adjustment component. The tilt angle of the tool holder can be adjusted by rotating the adjustment component, which can control the machining depth and machining angle of the first and second cutting tools, thus facilitating the machining of irregular grooves with different depths and contours. Attached Figure Description
[0026] Figure 1 This is a top view of the groove after machining a symmetrical cutting tool.
[0027] Figure 2 This is a schematic diagram of the overall structure of this application.
[0028] Figure 3 This is a schematic diagram of the groove being machined in this application.
[0029] Figure 4 This is a schematic diagram of the main body in an embodiment of this application.
[0030] Figure 5 This is a schematic diagram of the tool holder structure in an embodiment of this application.
[0031] In the figure, 1. Main body, 11. Mounting groove, 12. Fixing hole, 13. Chip removal groove, 14. Liquid outlet hole, 2. Tool holder, 21. Mounting hole, 211. Locking component, 22. Tool groove, 23. Axial adjustment component, 24. Adjustment hole, 25. Angle adjustment component, 3. First blade, 4. Second blade, 5. Part, 51. Groove, 52. Arc convex line. Detailed Implementation
[0032] The present application will be further described in detail below with reference to the accompanying drawings.
[0033] Reference Figure 1The workpiece groove surface after milling part 5 with symmetrical inserts. The cutter body drives the insert to rotate and moves back and forth to process the groove surface to form the groove 51. In order to avoid the edge of the insert contacting the inner wall of part 5, when the insert enters the processing position of the groove 51, the initial position of the tip is generally located in the middle of the groove 51. During processing, the displacement of the cutter body needs to be controlled to be close to but less than half the width of the groove 51. As a result, the processing contours of the two sets of inserts cannot overlap in the middle part of the groove 51. After processing, the middle part of the groove 51 will form an arc convex line 52, resulting in the workpiece groove surface not being smooth enough.
[0034] Reference Figure 2 This application discloses a milling cutter for machining irregular grooves, comprising a main body 1. The bottom end of the main body 1 is fitted with symmetrically distributed tool holders 2 by screws. A first cutting insert 3 is mounted on one side of the tool holder 2, and a second cutting insert 4 is mounted on the other side of the tool holder 2. The positions of the cutting tips of the first cutting insert 3 and the second cutting insert 4 are asymmetrically arranged. The machining diameter, cutting angle or cutting edge shape of the first cutting insert 3 and the second cutting insert 4 are different. During the milling process, complementary cutting profiles are formed, and the edges of the cutting inserts are prevented from contacting the inner wall of the workpiece.
[0035] Reference Figure 3 During milling, the main body 1 vertically guides the first cutting tool 3 and the second cutting tool 4 into the inner hole of the part 5, ensuring that the main body 1 and the part 5 are on the same axis. Then, the milling machine drives the main body 1 to rotate downwards spirally. Simultaneously, the main body 1 controls the first cutting tool 3 and the second cutting tool 4 to move back and forth in the inner hole of the part 5. When the main body 1 moves the first cutting tool 3 and the second cutting tool 4 to the left, the first cutting tool 3 gradually processes the outer edge of the groove 51, and the second cutting tool 4 gradually processes the inner edge of the groove 51. When the main body 1 moves the first cutting tool 3 and the second cutting tool 4 to the right, the first cutting tool 3 gradually processes the inner edge of the groove 51, and the second cutting tool 4 gradually processes the outer edge of the groove 51. During the left and right movement of the first cutting tool 3 and the second cutting tool 4, due to the asymmetrical design of the first cutting tool 3 and the second cutting tool 4, the processing contours of the first cutting tool 3 and the second cutting tool 4 will overlap in the middle part of the groove 51 during the processing, thereby avoiding the appearance of arc-shaped protrusions 52 in the processed groove 51 and ensuring that the surface of the groove 51 is smooth.
[0036] Reference Figure 1 and Figure 4The main body 1 has a mounting groove 11 near the bottom. The mounting groove 11 has a fixing hole 12 at its center. The fixing hole 12 is an internally threaded hole. The tool holder 2 has a mounting hole 21 that passes through the tool holder 2 at its center. The inner side of the mounting hole 21 has a locking member 211 that connects to the fixing hole 12. The locking member 211 is a screw. The screw passes through the mounting hole 21 and is threadedly connected to the fixing hole 12, thus fixing the tool holder 2 on the mounting groove 11.
[0037] The side wall of the main body 1 is provided with a chip removal groove 13 connected to the mounting groove 11. When machining irregular grooves, the chips generated by the first blade 3 and the second blade 4 will be discharged from the inner hole of the part 5 through the chip removal groove 13. The bottom end of the chip removal groove 13 is provided with a liquid outlet hole 14 that communicates with the interior of the main body 1. The axial part inside the main body 1 is provided with a coolant flow channel. The liquid outlet hole 14 adopts a symmetrical and dispersed design. One end of the liquid outlet hole 14 is connected to the bottom of the coolant flow channel, and the other end of the liquid outlet hole 14 is set near the bottom end of the tool holder 2. During the milling process, the coolant can flow through the coolant flow channel to the liquid outlet hole 14 and flow out through the liquid outlet hole 14 to cool the first blade 3 and the second blade 4. At the same time, the flowing coolant can guide the waste chips, making it convenient for the waste chips to be discharged through the chip removal groove 13, thereby avoiding excessive heat in the machining part.
[0038] Reference Figure 3 and Figure 4 The bottom end of the blade holder 2 is provided with a blade groove 22. After the first blade 3 or the second blade 4 is engaged with the blade groove 22, it is fixed to the inside of the blade groove 22 by screws, so that the first blade 3 or the second blade 4 can be easily replaced. Moreover, the first blade 3 or the second blade 4 adopts a standardized blade structure, so there is no need to customize the blade, which reduces the cost of blade replacement.
[0039] The radius of rotation at the tip of the first blade 3 is L1, and the radius of rotation at the tip of the second blade 4 is L2. The difference between L2 and L1 is 0.1-0.5mm. In this embodiment, the difference between the radius of rotation of the first blade 3 and the second blade 4 is 0.5mm, which can ensure that the machining contours of the first blade 3 and the second blade 4 coincide during the left and right back and forth movement of the main body 1, and ensure that the machining surface of the groove 51 is smooth. If the difference between the radius of rotation of the first blade 3 and the second blade 4 is too large, during the left and right movement, one of the blades is likely to come into contact with the inner hole wall of the part 5, and the machining width of the groove 51 will be reduced. The problem of incomplete machining will occur near the inner edge of the groove 51. Therefore, it is necessary to control the difference between the radius of rotation of the first blade 3 and the second blade 4 within a very small range.
[0040] Reference Figure 4The mounting hole 21 is an oblong hole. The design of the oblong hole allows the tool holder 2 to move outside the locking member 211, which facilitates the adjustment and control of the axial displacement or tilt angle of the tool holder 2.
[0041] The top of the tool holder 2 is threadedly connected to an axial adjustment component 23 for adjusting its vertical height on the main body 1. The axial adjustment component 23 adopts a screw structure and is threadedly connected to the tool holder 2. The top of the axial adjustment component 23 abuts against the main body 1. When the axial adjustment component 23 is rotated, the tool holder 2 can be pushed to slide in the mounting groove 11 because the top of the axial adjustment component 23 abuts against the main body 1, and the extension length of the first blade 3 or the second blade 4 on the main body 1 can be adjusted so as to control the machining depth of the groove 51.
[0042] The tool holder 2 has adjustment holes 24 on its side wall, which are located on both the upper and lower sides of the mounting hole 21. An angle adjustment component 25 for adjusting the angle between the tool holder 2 and the main body 1 is threadedly connected to the inner side of the adjustment hole 24. The angle adjustment component 25 adopts a screw structure and is threadedly connected to the mounting hole 21. The end of the angle adjustment component 25 abuts against the main body 1.
[0043] When the angle adjustment component 25 above the locking component 211 is adjusted, during the rotation of the upper angle adjustment component 25, the distance between the top of the tool holder 2 and the main body 1 can be adjusted because the end of the upper angle adjustment component 25 abuts against the main body 1, and the distance between the tips of the first blade 3 and the second blade 4 can be reduced.
[0044] When the angle adjustment component 25 below the locking component 211 is adjusted, during the rotation of the lower angle adjustment component 25, the distance between the bottom end of the tool holder 2 and the main body 1 can be adjusted because the end of the lower angle adjustment component 25 abuts against the main body 1, and the distance between the tips of the first blade 3 and the second blade 4 can be increased.
[0045] During the specific adjustment process, the first blade 3 or the second blade 4 can be adjusted to different tilt angles by the cooperation of the angle adjustment parts 25 on the upper and lower sides, so as to control the edge shape of the groove 51.
[0046] The implementation principle of this embodiment is as follows: First, the locking member 211 is threaded through the mounting hole 21 and connected to the fixing hole 12. The tool holder 2 is installed in the mounting groove 11. Then, the first blade 3 and the second blade 4 are selected in sequence and installed in the tool grooves 22 of the two tool holders 2 respectively, and the rotation radius of the first blade 3 and the second blade 4 has a difference of 0.5mm.
[0047] During the machining of irregular grooves, the main body 1 is mounted on the drive shaft of the milling machine. The first cutting tool 3 and the second cutting tool 4 are vertically inserted into the inner hole of the part 5 through the main body 1, and the main body 1 and the part 5 are located on the same axis. At this time, the cutting tips of the first cutting tool 3 and the second cutting tool 4 are on both sides of the middle part of the groove 51. Then, the main body 1 is controlled to drive the first cutting tool 3 and the second cutting tool 4 to rotate downwards in a spiral and to perform the milling. At the same time, the main body 1 drives the first cutting tool 3 and the second cutting tool 4 to move back and forth in the inner hole of the part 5, and gradually machine the groove 51 into shape. During the machining process, the machining contours of the first cutting tool 3 and the second cutting tool 4 will overlap to ensure that the machining surface of the groove 51 is smooth.
[0048] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A slot milling tool for profiled slot machining, comprising a main body (1), characterized in that: The bottom end of the main body (1) is provided with symmetrically distributed tool holders (2), one side of which is provided with a first blade (3), and the other side is provided with a second blade (4), the positions of the blade tips of the first blade (3) and the second blade (4) are asymmetrically arranged, and the processing diameter, cutting angle or blade shape of the first blade (3) and the second blade (4) are different.
2. The slot milling cutter for profile slot processing according to claim 1, characterized in that: The main body (1) is provided with a fixing hole (12), the tool holder (2) is provided with an installation hole (21) penetrating the tool holder (2), and the inner side of the installation hole (21) is provided with a locking piece (211) detachably connected with the fixing hole (12).
3. The slot milling cutter for profile slot processing according to claim 1, wherein: The main body (1) is provided with an installation groove (11) near the bottom end, and the side wall of the main body (1) is provided with a chip removal groove (13) connected with the installation groove (11), and the bottom end of the chip removal groove (13) is provided with a liquid outlet hole (14) connected with the inside of the main body (1).
4. The grooving cutter for machining of profiled grooves according to claim 1, characterized in that: The bottom end of the tool holder (2) is provided with a tool groove (22), and the first blade (3) or the second blade (4) is installed on the inner side of the tool groove (22).
5. The slot milling cutter for profile slot processing according to claim 4, characterized in that: The rotational radius of the blade tip of the first blade (3) and the blade tip of the second blade (4) has a difference of 0.1-0.5mm.
6. The slot milling cutter for profile slot processing according to claim 2, wherein: The installation hole (21) is an oblong hole.
7. The notching cutter for machining of profiled grooves according to claim 1, characterized in that: The top of the tool holder (2) is threadedly connected with an axial adjusting piece (23) for adjusting the vertical height of the tool holder (2) on the main body (1), and the top end of the axial adjusting piece (23) abuts against the main body (1).
8. The grooving cutter for profile slot machining according to claim 1, characterized in that: The side wall of the tool holder (2) is provided with adjusting holes (24) distributed on the upper and lower sides of the installation hole (21), the inner side of the adjusting hole (24) is threadedly connected with an angle adjusting piece (25) for adjusting the included angle between the tool holder (2) and the main body (1), and the end of the angle adjusting piece (25) abuts against the main body (1).