A light-cutting, quick-change T-shaped knife

Abstract

This utility model discloses a quick-change T-shaped cutter for light cutting, comprising a cutter shank, a cutter head, and a fastening nut. The cutter shank includes a cutter body, a first connecting segment, and a second connecting segment connected sequentially from top to bottom. The cutter head includes a third connecting segment, a fourth connecting segment, and a cutter head body connected sequentially from top to bottom. The first and fourth connecting segments are threaded cylinders, while the second and third connecting segments are two complementary threaded semi-cylinders. The second and third connecting segments are configured to interlock, forming a complete external thread. The fastening nut is configured to engage with the external thread and is operable to switch the cutter head between a locked and unlocked state. This utility model connects the cutter head and cutter shank via threads and a locating pin, enabling quick cutter changes and precise machining in a single pass, thereby improving machining efficiency.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a light-cutting, quick-change head-changing T-shaped knife. Background Technology

[0002] With the continuous development of industrial technology, products are increasingly designed as integrated systems, resulting in a large number of structures such as countersunk holes and T-slots. These structures require simultaneous milling. Since the countersunk hole is larger than the through hole, the cutting tool cannot be inserted. Generally, an empty tool holder is used to position the cutting tool in the structure before machining. The T-slot is manually inserted through the through hole of the countersunk hole and mounted on the spindle tool holder, followed by manual tool setting. After machining, the tool needs to be removed and the spindle pushed back. This method can achieve countersunk hole machining, but it is cumbersome, requires repeated tool setting, and wastes time.

[0003] Therefore, those skilled in the art are dedicated to developing a light-cutting, quick-change T-shaped cutter to facilitate the machining of structures such as countersunk heads. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this utility model is how to solve the problem of increasing the number of steps and repeatedly disassembling and assembling tools and repeatedly setting tools in the traditional machining of countersunk holes, so as to achieve rapid tool change and stable machining with one tool setting.

[0005] To achieve the above objectives, this utility model provides a light-cutting, quick-change T-shaped knife, comprising a knife shank, a knife head, and a fastening nut. The knife shank includes a knife shank body, a first connecting segment, and a second connecting segment connected sequentially from top to bottom. The knife head includes a third connecting segment, a fourth connecting segment, and a knife head body connected sequentially from top to bottom. The first and fourth connecting segments are threaded cylinders, and the second and third connecting segments are two complementary threaded semi-cylinders. The second and third connecting segments are configured to combine together, forming a complete external thread. The fastening nut is configured to engage with the external thread and is operable to switch the knife head between a locked and unlocked state.

[0006] Furthermore, it also includes a cylindrical pin, wherein the center of the first connecting segment and the fourth connecting segment are provided with cylindrical pin holes facing each other, and the mating surfaces of the second connecting segment and the third connecting segment are provided with semi-cylindrical pin holes, so that the cylindrical pin can be positioned in the cylindrical pin holes and the semi-cylindrical pin holes.

[0007] Furthermore, the height of the second connecting segment is equal to the height of the third connecting segment.

[0008] Furthermore, the outer diameter of the external thread is smaller than the diameter of the tool holder body.

[0009] Furthermore, when the fastening nut is threaded onto the uppermost part of the first connecting section, the cutter head is in the disassembled state.

[0010] Furthermore, the height of the fastening nut is less than the height of the first connecting section.

[0011] Furthermore, when the second connecting segment and the third connecting segment are combined together, and the fastening nut is threaded to the lowermost part of the fourth connecting segment, the cutter head portion is in the locked state.

[0012] Furthermore, the height of the fastening nut is greater than the total height of the third connecting segment and the fourth connecting segment.

[0013] Furthermore, the cutter head body is a T-shaped cutter head.

[0014] Furthermore, the fastening nut has a disassembly surface on its side.

[0015] The beneficial effects of this utility model are: by connecting the cutter head and the cutter bar with threads and positioning pins, quick tool changing and precise machining in one tool setting are achieved, thereby improving machining efficiency.

[0016] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description

[0017] Figure 1 This is an exploded view of a preferred embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the nut position when the cutter head is in the locked state according to a preferred embodiment of this utility model;

[0019] Figure 3 yes Figure 2 A longitudinal sectional view;

[0020] Figure 4 This is a schematic diagram of the nut position when the cutter head is in the disassembled state according to a preferred embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the state when changing the cutter head according to a preferred embodiment of this utility model.

[0022] Among them, 10-tool holder part, 11-tool holder body, 12-first connecting section, 13-second connecting section, 20-tool head part, 21-tool head body, 22-third connecting section, 23-fourth connecting section, 30-fastening nut, 31-disassembly plane, 40-cylindrical pin. Detailed Implementation

[0023] The following description, with reference to the accompanying drawings, illustrates several preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0024] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and this invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of some components has been appropriately exaggerated in the drawings.

[0025] This utility model relates to a quick-change T-shaped cutter for light cutting. This cutter is designed to solve the problem that special structures such as countersunk holes cannot be machined normally due to space constraints. It eliminates the need for repeated tool setting operations and does not require modification of existing production equipment, significantly improving clamping efficiency and thus having a positive impact on lean production.

[0026] This utility model adopts a modular design concept, decomposing the traditional integral T-shaped cutter into two main components: the cutter shank and the cutter head. Precision connection and quick replacement are achieved through external threads, cylindrical pins, and a fastening nut. Specifically: both the cutter shank and the cutter head are equipped with mating external threads and cylindrical pin holes; the cylindrical pin ensures coaxial positioning of the cutter shank and the cutter head; the semi-threaded plane design reliably transmits torque; the external fastening nut connects to and secures the external threads on the cutter shank and the cutter head, thereby enabling quick replacement and precise positioning of the cutter head.

[0027] The design principle of this utility model of the cutting tool is as follows:

[0028] 1. An external thread is provided at the connection end of the tool holder near the tool head. The outer diameter of this thread is slightly smaller than the diameter of the tool holder to ensure strength.

[0029] 2. The threaded section is precisely cut into two Z-shaped parts along the axial direction, and positioning pin holes of the same specification are machined on both ends of the cut to achieve precise positioning.

[0030] 3. Use matching fastening nuts and locating pins to connect and fix the two separated parts.

[0031] Adopting a modular design, the shape and type of the cutting head can be arbitrarily designed according to actual processing needs. As long as the thread and positioning pin hole specifications connected to the tool holder are consistent, a tool holder can be interchanged with multiple cutting heads, thereby improving tool utilization and production efficiency. Example

[0032] like Figure 1-5 As shown, this embodiment provides a quick-change T-shaped cutter for light cutting, including a cutter shank portion 10, a cutter head portion 20, and a fastening nut 30. The cutter shank portion 10 includes a cutter shank body 11, a first connecting segment 12, and a second connecting segment 13 connected sequentially from top to bottom. The cutter head portion 20 includes a third connecting segment 22, a fourth connecting segment 23, and a cutter head body 21 connected sequentially from top to bottom. The first connecting segment 12 and the fourth connecting segment 23 are threaded cylinders, and the second connecting segment 13 and the third connecting segment 22 are two complementary threaded semi-cylinders. The second connecting segment 13 and the third connecting segment 22 are configured to be able to join together, so that the first connecting segment 12, the second connecting segment 13, the third connecting segment 22, and the fourth connecting segment 23 form a complete external thread. The fastening nut 30 is configured to engage with the external thread and is operable to allow the cutter head portion 20 to switch between a locked state and a disassembled state.

[0033] The quick-change T-shaped cutter also includes a cylindrical pin 40. The first connecting section 12 and the fourth connecting section 23 are provided with cylindrical pin holes at their centers, and the second connecting section 13 and the third connecting section 22 are provided with semi-cylindrical pin holes on their mating surfaces, so that the cylindrical pin 40 can be positioned in the cylindrical pin hole and the semi-cylindrical pin hole.

[0034] The height of the second connecting section 13 is equal to the height of the third connecting section 22. The outer diameter of the external thread is smaller than the diameter of the tool holder body 11.

[0035] When the fastening nut 30 is threaded onto the uppermost part of the first connecting section 12, the cutter head portion 20 is in a disassembled state. The height of the fastening nut 30 is less than the height of the first connecting section 12.

[0036] When the second connecting segment 13 and the third connecting segment 22 are joined together, and the fastening nut 30 is threaded onto the bottom of the fourth connecting segment 23, the cutter head portion 20 is in a locked state. The height of the fastening nut 30 is greater than the total height of the third connecting segment 22 and the fourth connecting segment 23.

[0037] In this embodiment, the cutter head body 20 is a T-shaped cutter head.

[0038] Preferably, the fastening nut 30 has a disassembly surface 31 on its side to facilitate operation with a wrench.

[0039] This invention addresses the problems of cumbersome countersunk hole machining processes and low tool changing efficiency by providing a lightweight, quick-change T-shaped cutter. This T-shaped cutter can complete the machining of countersunk holes in the same machining sequence and achieve precise and rapid tool changing operations without the need for repeated tool setting, significantly reducing machining processes and improving tool changing efficiency.

[0040] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A quick-change T-shaped cutter with light cutting, characterized in that, The device includes a tool holder, a tool head, and a fastening nut. The tool holder includes a tool holder body, a first connecting segment, and a second connecting segment connected sequentially from top to bottom. The tool head includes a third connecting segment, a fourth connecting segment, and a tool head body connected sequentially from top to bottom. The first and fourth connecting segments are threaded cylinders, and the second and third connecting segments are two complementary threaded semi-cylinders. The second and third connecting segments are configured to engage with each other, forming a complete external thread. The fastening nut is configured to mate with the external thread and is operable to allow the tool head to switch between a locked and unlocked state.

2. The quick-change T-knife of claim 1, wherein, It also includes a cylindrical pin, wherein the center of the first connecting segment and the fourth connecting segment are provided with cylindrical pin holes opposite each other, and the mating surfaces of the second connecting segment and the third connecting segment are provided with semi-cylindrical pin holes, so that the cylindrical pin can be positioned in the cylindrical pin holes and the semi-cylindrical pin holes.

3. The quick-change T-knife of claim 2, wherein, The height of the second connecting segment is equal to the height of the third connecting segment.

4. The quick-change T-knife of claim 3, wherein, The outer diameter of the external thread is smaller than the diameter of the tool holder body.

5. The quick-change T-knife of claim 4, wherein, When the fastening nut is threaded onto the uppermost part of the first connecting section, the cutter head is in the disassembled state.

6. The quick-change T-shaped cutter as described in claim 5, characterized in that, The height of the fastening nut is less than the height of the first connecting section.

7. The quick-change T-shaped cutter for light cutting as described in claim 4, characterized in that, When the second connecting segment and the third connecting segment are combined together, and the fastening nut is threaded to the bottom of the fourth connecting segment, the cutter head is in the locked state.

8. The quick-change T-shaped cutter for light cutting as described in claim 7, characterized in that, The height of the fastening nut is greater than the total height of the third connecting section and the fourth connecting section.

9. The quick-change T-shaped cutter for light cutting as described in claim 1, characterized in that, The cutter head body is a T-shaped cutter head.

10. The quick-change T-shaped cutter for light cutting as described in claim 1, characterized in that, The fastening nut has a disassembly surface on its side.

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