Thread milling cutter convenient to disassemble and replace

Abstract

The utility model relates to the field of thread milling cutter discloses a thread milling cutter convenient to disassemble and replace, including handle, the downside fixed connection of handle has limit stop, the downside of limit stop is equipped with a plurality of no.

Description

Technical Field

[0001] This utility model relates to the field of thread milling cutter technology, and in particular to a thread milling cutter that is easy to disassemble and replace. Background Technology

[0002] A thread end mill is a tool specifically designed for machining threads. It can be used to machine internal and external threads. Generally, a thread end mill consists of two parts: a shank and a cutter head. The shank provides support for the cutter head, which typically consists of multiple inserts arranged in a circumferential array with threads on their outer surface. Chip evacuation grooves are provided between adjacent inserts. In fact, during thread machining, it is common for one of the thread inserts to break or wear out. However, existing thread end mills generally suffer from the problem that if one insert breaks, the entire thread end mill must be replaced.

[0003] For example, Chinese utility model patent CN219026201U discloses a thread end mill that is easy to disassemble and replace. Although this solution uses a second screw to limit the cutter head, achieving the effect of detachable connection between the cutter head and the cutter shank, after the cutter head is worn after long-term use, only the cutter head needs to be disassembled and replaced, and the cutter shank and cutter shank do not need to be replaced, thus achieving the function of simple disassembly and convenient use of the thread end mill, if only one of the multiple cutting edges of the thread end mill in this solution is damaged, replacing the entire cutter head, that is, replacing all the other intact cutting edges on the cutter head, still causes a waste problem.

[0004] In view of this, a thread milling cutter that is easy to disassemble and replace is proposed to solve the above problems. Utility Model Content

[0005] To solve the technical problem of replacing partial cutting edges of thread end mills, this utility model provides a thread end mill that is easy to disassemble and replace.

[0006] This utility model is achieved using the following technical solution: a thread milling cutter that is easy to disassemble and replace, including a cutter holder, a limiting platform fixedly connected to the lower side of the cutter holder, a plurality of secondary sliding grooves being provided on the lower side of the limiting platform, the plurality of secondary sliding grooves being distributed in a circumferential array, a slider being slidably connected to the inner side of each secondary sliding groove, a reinforcing plate being fixedly connected to the lower side of each slider, a positioning bolt being provided on the upper side of each slider, a thread cutting edge being fixedly connected to the outer side of each reinforcing plate, a limiting support mechanism being provided on the side where the plurality of thread cutting edges are close to each other, and a cutting edge release mechanism being provided on the inner side of the limiting platform to allow the plurality of thread cutting edges to move closer or further apart.

[0007] As a further improvement to the above solution, the limiting support mechanism includes a limiting post set at the center of the plurality of threaded cutting edges that are close to each other. The limiting post has a plurality of first sliding grooves, and the plurality of first sliding grooves are paired with a plurality of reinforcing plates. Each reinforcing plate is slidably connected to the inner side of the corresponding first sliding groove.

[0008] As a further improvement to the above solution, baffles are fixedly connected to the lower side of each of the multiple threaded cutting edges, and the upper side of each baffle is slidably connected to the lower side of the limiting post.

[0009] As a further improvement to the above solution, the blade release mechanism includes a threaded rod rotatably connected to the inner side of the handle, the lower end of the threaded rod being rotatably connected to the upper side of the limiting post, and an internal hexagon nut being fixedly connected to the upper end of the threaded rod. The internal hexagon nut is rotatably connected to the upper side of the handle, and the threaded rod is provided with a slider pushing mechanism that causes the slider to slide along the inner side of the second slide groove.

[0010] As a further improvement to the above solution, the slider pushing mechanism includes a push block that is slidably connected to the inside of the limiting platform, the push block being threadedly sleeved with the threaded rod, and a wedge-shaped slider mechanism being provided on the limiting platform.

[0011] As a further improvement to the above solution, the wedge-shaped slider mechanism includes multiple No. 3 sliding grooves opened on the push block. The multiple No. 3 sliding grooves are arranged in a circumferential array. Each No. 3 sliding groove has a locking block slidably connected to its inner side. The multiple locking blocks are paired with the multiple No. 3 sliding grooves, and each locking block is slidably connected to the inner side of the corresponding No. 3 sliding groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses an internal hexagonal nut to rotate the threaded rod, pushing each threaded cutting edge to protrude from the side of the limiting post, thus exposing the positioning bolt connecting the reinforcing plate and the slider. Workers can unload and replace the damaged threaded cutting edges using the positioning bolt, while the intact threaded cutting edges can continue to be used, thereby achieving the purpose of reducing production costs.

[0014] 2. This utility model uses the cooperation of the locking block, the No. 3 sliding groove and the reinforcing plate to significantly improve the installation accuracy of each thread cutting edge of the thread milling cutter through internal clamping. Furthermore, the sliding of the reinforcing plate in the No. 1 sliding groove on the limiting post can improve the shear resistance of each thread cutting edge, making the overall strength of the thread milling cutter stronger. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a thread milling cutter that is easy to disassemble and replace, provided by this utility model;

[0016] Figure 2 for Figure 1 A bottom view;

[0017] Figure 3 for Figure 1 A schematic diagram of the exploded structure;

[0018] Figure 4 This is a schematic diagram of the structure of the threaded rod and the push block in one embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the card block and the third sliding groove in one embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the positioning bolt in one embodiment of the present invention.

[0021] Explanation of key symbols:

[0022] 1. Tool holder; 2. Limiting platform; 3. Limiting post; 4. Threaded cutting edge; 5. Reinforcing plate; 6. Slider; 7. Socket head cap nut; 8. No. 1 slide groove; 9. Baffle; 10. Push block; 11. Threaded rod; 12. No. 2 slide groove; 13. No. 3 slide groove; 14. Locking block; 15. Positioning bolt. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] Example:

[0025] Please combine Figures 1-3 This embodiment provides a thread milling cutter that is easy to disassemble and replace, including a tool holder 1, which is used to connect to the milling machine chuck.

[0026] Please combine Figure 3 As shown, a limiting platform 2 is fixedly connected to the lower side of the tool holder 1. The limiting platform 2 is a cylindrical frustum structure.

[0027] Please combine Figure 3 As shown, in this embodiment, three second slide grooves 12 are provided on the lower side of the limiting platform 2. The second slide grooves 12 are T-shaped slide groove structures. The three second slide grooves 12 are arranged in a circular array. A slider 6 is slidably connected to the inner side of each second slide groove 12. The slider 6 is a T-shaped slide table structure.

[0028] Please combine Figure 3 As shown, a reinforcing plate 5 is fixedly connected to the lower side of each slider 6. The reinforcing plate 5 can be used to improve the shear resistance of the thread cutting edge 4.

[0029] Please combine Figure 3 As shown, each slider 6 is provided with a positioning bolt 15 on its upper side. The individual threaded blade 4 can be removed from the slider 6 and replaced by the positioning bolt 15.

[0030] Each reinforcing plate 5 has a threaded blade 4 fixedly connected to its outer side. It should be noted that when multiple threaded blades 4 approach each other and the limiting post 3, there is a chip discharge groove between two adjacent ones.

[0031] Please combine Figure 3 As shown, a limit support mechanism is provided on the side where the three threaded cutting edges 4 are close to each other, and a cutting edge release mechanism is provided on the inner side of the limit platform 2 to make the three threaded cutting edges 4 move closer or further apart.

[0032] Please combine Figure 3 As shown, the limiting support mechanism includes a limiting post 3 set at the center of three threaded cutting edges 4 that are close to each other. The limiting post 3 has three first sliding grooves 8. The three first sliding grooves 8 are paired with three reinforcing plates 5. Each reinforcing plate 5 is slidably connected to the inner side of the corresponding first sliding groove 8.

[0033] Please combine Figure 2 As shown, baffles 9 are fixedly connected to the lower side of each of the three threaded cutting edges 4. The baffles 9 have a fan-shaped structure, and the upper side of each baffle 9 is slidably connected to the lower side of the limiting post 3.

[0034] Please combine Figure 3 As shown, the blade release mechanism includes a threaded rod 11 rotatably connected to the inner side of the handle 1. The lower end of the threaded rod 11 is rotatably connected to the upper side of the limiting post 3. The upper end of the threaded rod 11 is fixedly connected to an internal hexagon nut 7, which is rotatably connected to the upper side of the handle 1. The threaded rod 11 is provided with a slider pushing mechanism that causes the slider 6 to slide along the inner side of the second slide groove 12.

[0035] Please combine Figure 3 As shown, the slider pushing mechanism includes a push block 10 that is slidably connected to the inside of the limiting platform 2. In this embodiment, the push block 10 has a frustum-shaped structure and is threadedly connected to the threaded rod 11. A wedge-shaped slider mechanism is provided on the limiting platform 2.

[0036] Please combine Figure 4 and Figure 5 As shown, the wedge-shaped slider mechanism includes three slide grooves 13 on the push block 10. The slide grooves 13 are inclined and arranged in a circular array. Each slide groove 13 has a locking block 14 slidably connected to its inner side. The locking block 14 has an inclined plate structure. The three locking blocks 14 are paired with the three slide grooves 13. Each locking block 14 is slidably connected to the inner side of the corresponding slide groove 13.

[0037] When the threaded rod 11 rotates clockwise, the push block 10 moves downward, and the thread cutting edge 14 moves outward to open;

[0038] Conversely, when the threaded rod 11 reverses direction, the push block 10 moves upward, and the thread cutting edge 14 moves inward to close.

[0039] The implementation principle of a thread milling cutter that is easy to disassemble and replace in this embodiment is as follows: When one of the thread cutting edges 4 of the thread milling cutter breaks and needs to be replaced, the internal hex nut 7 is rotated by a tool. The internal hex nut 7 drives the thread rod 11 to rotate. Then the thread rod 11 pushes the push block 10 inside the limiting platform 2 to descend. Under the limiting action of the third slide groove 13, the locking block 14 can push the slider 6 to slide outward along the second slide groove 12, which drives the reinforcing plate 5 and the thread cutting edge 4 to be pulled out from the limiting post 3. Then the positioning bolt 15 on the upper side of the slider 6 for connecting the reinforcing plate 5 is exposed. By rotating the positioning bolt 15, the broken thread cutting edge 14 can be removed from the slider 6 and replaced.

[0040] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A thread milling cutter that is easy to disassemble and replace, comprising a tool holder (1), characterized in that, The lower side of the handle (1) is fixedly connected to a limiting platform (2). The lower side of the limiting platform (2) is provided with multiple second slide grooves (12). The multiple second slide grooves (12) are arranged in a circumferential array. A slider (6) is slidably connected to the inner side of each second slide groove (12). A reinforcing plate (5) is fixedly connected to the lower side of each slider (6). A positioning bolt (15) is provided on the upper side of each slider (6). A threaded cutting edge (4) is fixedly connected to the outer side of each reinforcing plate (5). A limiting support mechanism is provided on the side where the multiple threaded cutting edges (4) are close to each other. A cutting edge release mechanism is provided on the inner side of the limiting platform (2) to make the multiple threaded cutting edges (4) close to or far away from each other.

2. The thread milling cutter that is easy to disassemble and replace as described in claim 1, characterized in that, The limiting support mechanism includes a limiting post (3) set at the center of the multiple threaded cutting edges (4) close to each other. The limiting post (3) has multiple first grooves (8). The multiple first grooves (8) are paired with multiple reinforcing plates (5). Each reinforcing plate (5) is slidably connected to the inner side of the corresponding first groove (8).

3. A thread milling cutter that is easy to disassemble and replace as described in claim 2, characterized in that, Each of the multiple threaded cutting edges (4) has a baffle (9) fixedly connected to its lower side, and the upper side of each baffle (9) is slidably connected to the lower side of the limiting post (3).

4. A thread milling cutter that is easy to disassemble and replace as described in claim 2, characterized in that, The blade release mechanism includes a threaded rod (11) rotatably connected to the inside of the handle (1). The lower end of the threaded rod (11) is rotatably connected to the upper side of the limiting post (3). The upper end of the threaded rod (11) is fixedly connected to an internal hexagonal nut (7). The internal hexagonal nut (7) is rotatably connected to the upper side of the handle (1). The threaded rod (11) is provided with a slider pushing mechanism that allows the slider (6) to slide along the inside of the second slide groove (12).

5. A thread milling cutter that is easy to disassemble and replace as described in claim 4, characterized in that, The slider pushing mechanism includes a push block (10) that is slidably connected to the inside of the limiting platform (2). The push block (10) is threadedly connected to the threaded rod (11). A wedge-shaped slider mechanism is provided on the limiting platform (2).

6. A thread milling cutter that is easy to disassemble and replace as described in claim 5, characterized in that, The wedge-shaped slider mechanism includes multiple third-order slide grooves (13) opened on the push block (10). The multiple third-order slide grooves (13) are arranged in a circumferential array. Each third-order slide groove (13) has a locking block (14) slidably connected to its inner side. The multiple locking blocks (14) are paired with the multiple third-order slide grooves (13), and each locking block (14) is slidably connected to the inner side of the corresponding third-order slide groove (13).

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