Multi-slope stepping type short broach

Abstract

The utility model belongs to the technical field of jacquard cutter manufacturing, and particularly relates to a multi-slope stepping type short broach which comprises a cutter handle, a buffering assembly is installed on the side of the cutter handle, a cutter body is fixedly connected to the interior of the buffering assembly, a main cutting tool is fixedly connected to the end of the cutter body, and the main cutting tool is fixedly connected to the end of the cutter body. The outer wall of the main cutter is in threaded connection with a bolt, and the outer wall of the bolt is in threaded connection with an auxiliary cutter; the wear resistance and the high-temperature resistance of the cutter are remarkably improved, in high-strength and high-speed cutting operation, the material can bear larger pressure and wear, the service life of the cutter is prolonged, the resistance in the cutting process is gradually reduced through the improvement of the multi-inclined-plane structure, especially the design of the gradient inclined plane angle and the stepped distributed cutting edges, and the cutting efficiency is improved. And by cutting the workpiece in stages, the load of single cutting is reduced, so that the machining speed and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of jacquard machine tool manufacturing technology, specifically a multi-bevel stepping short broach. Background Technology

[0002] Jacquard weaving involves creating a three-dimensional, embossed pattern on a textile by interlacing warp and weft threads. Therefore, the broaching cutter on a jacquard machine plays a crucial role in this process; the broaching cutter is a shaping tool used for broaching. Its surface has multiple rows of teeth, the size and shape of which increase and change sequentially from the entry point to the exit point. When the broaching cutter performs its broaching motion, each tooth cuts a certain thickness of material from the workpiece, consistently achieving the required size and shape.

[0003] Chinese Patent 201921236254.8 discloses a multi-bevel stepping short broach, comprising a tool holder, screws, a return spring, a multi-bevel feed rod, a tool holder, a limiting block, a short broach, broach teeth, multiple bevels for feed, a feed rod movement space, and a connection point with the machine tool. Its key feature is that the bevels on the multi-bevel feed rod 6 and the multi-bevel feed rod 7 are perfectly aligned. When the multi-bevel feed rod 6 is pulled downwards axially, the multi-bevel feed rod 7 pushes the multi-bevel feed rod 7, which in turn pushes the short broach 9 fixed to the tool holder 7 to move to the left, thereby achieving the feed of the cutting amount. This multi-bevel stepping short broach is rationally designed, compact in structure, and has high machining accuracy, making it a promising tool for precision keyway finishing.

[0004] In the production process of jacquard machines, the performance of the cutting tools directly affects the quality of the fabric and the production efficiency. Existing multi-bevel stepping short cutters have problems such as low cutting efficiency, insufficient durability and need to improve processing accuracy in jacquard machine applications, which cannot meet the growing demand for high-quality fabric production.

[0005] Therefore, a multi-sloping-plane stepping short broach is proposed to address the above problems. Utility Model Content

[0006] To overcome the shortcomings of existing technology, this paper addresses the problem that existing screws may break apart from the screw head when subjected to lateral impact, and that external vibrations can easily cause the bolts to loosen during use.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The multi-sloping stepping short broach of this utility model includes a shank, a buffer assembly is installed on the side of the shank, and a tool body is fixedly connected inside the buffer assembly. A main cutting tool is fixedly connected to the end of the tool body, and a bolt is threadedly connected to the outer wall of the main cutting tool, and a secondary cutting tool is threadedly connected to the outer wall of the bolt.

[0008] Preferably, the tool body is made of high-strength cemented carbide, and the outer wall of the tool body is coated with a titanium nitride coating.

[0009] Preferably, the tool body and the main cutting tool are integrated, and the main cutting tool is designed with an inclined surface.

[0010] Preferably, the secondary cutting tool is serrated in shape, and the secondary cutting tool is made of the same material as the main cutting tool.

[0011] Preferably, the secondary cutting tool is connected to the main cutting tool via bolts to form a threaded detachable structure, and two bolts are symmetrically arranged about the horizontal central axis of the secondary cutting tool.

[0012] Preferably, the buffer assembly includes a fixed housing, a support rod is fixedly connected inside the fixed housing, a spring is provided outside the support rod, and a connecting block is fixedly connected to the top of the spring.

[0013] Preferably, the support rod and the spring are arranged with their vertical central axes coincident, and the connecting block forms an elastic structure with the fixed shell through the spring, and the connecting block and the tool body are integrated.

[0014] The advantages of this utility model are:

[0015] 1. This utility model reduces the coefficient of friction and cutting resistance through optimized tool material and high-performance coating, enabling the tool to perform cutting operations more smoothly. Using high-strength cemented carbide or superhard composite material as the main material of the broach significantly improves the wear resistance and high-temperature resistance of the tool. In high-intensity and high-speed cutting operations, this material can withstand greater pressure and wear, extending the tool's service life. The improvement of the multi-bevel structure, especially the design of the gradual bevel angle and stepped distribution of the cutting edge, gradually reduces the resistance during the cutting process. The staged cutting of the workpiece reduces the load of a single cut, thereby improving the processing speed and efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the entire utility model from the front view;

[0018] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the tool body of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A

[0021] Figure 5 This is a cross-sectional structural diagram of the buffer assembly of this utility model.

[0022] In the diagram: 1. Tool holder; 2. Buffer assembly; 3. Tool body; 4. Main cutting tool; 5. Bolt; 6. Secondary cutting tool; 201. Fixed housing; 202. Support rod; 203. Spring; 204. Connecting block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] like Figure 1 The multi-bevel stepping short broach shown includes a tool holder 1, a buffer assembly 2, a tool body 3, a main cutting tool 4, a bolt 5, and a secondary cutting tool 6.

[0026] Please see Figure 1 and Figure 5This invention discloses a multi-bevel stepping short broach, comprising a shank 1, a buffer assembly 2 mounted on the side of the shank 1, and a tool body 3 fixedly connected inside the buffer assembly 2. A main cutting tool 4 is fixedly connected to the end of the tool body 3, and a bolt 5 is threaded onto the outer wall of the main cutting tool 4. A secondary cutting tool 6 is threaded onto the outer wall of the bolt 5. The tool body 3 is made of high-strength cemented carbide, and its outer wall is coated with a titanium nitride coating. The tool body 3 and the main cutting tool 4 are integrally formed, and the main cutting tool 4 has a beveled shape. The secondary cutting tool 6 has a serrated shape, and its material is the same as that of the main cutting tool 4. This invention reduces the coefficient of friction and cutting resistance through optimized tool material and high-performance coating, allowing the tool to perform cutting operations more smoothly. High-strength cemented carbide or ultra-hard composite material is used as the broach body. The improved materials significantly enhance the wear resistance and high-temperature resistance of the cutting tool. The secondary cutting tool 6 is connected to the main cutting tool 4 via bolts 5, forming a threaded detachable structure. Two bolts 5 are symmetrically arranged about the horizontal central axis of the secondary cutting tool 6. The buffer assembly 2 includes a fixed housing 201, with a support rod 202 fixedly connected inside the fixed housing 201. A spring 203 is provided outside the support rod 202, and a connecting block 204 is fixedly connected to the top of the spring 203. The support rod 202 and the spring 203 are arranged with their vertical central axes coincident. The connecting block 204 forms an elastic structure with the fixed housing 201 via the spring 203. The connecting block 204 and the tool body 3 are integrated. The improvement of the multi-sloping surface structure, especially the design of the gradually changing slope angle and the stepped distribution of the cutting edge, gradually reduces the resistance during the cutting process. The staged cutting of the workpiece reduces the load of a single cut, thereby improving the processing speed and efficiency.

[0027] Working Principle: Firstly, when this multi-bevel stepping broach is put into use, the tool holder 1 is used to connect and fix it to machine tools and other equipment, providing support and a mounting base for the entire tool. The tool body 3 is made of high-strength cemented carbide, possessing high hardness, high strength, and good wear resistance, capable of withstanding the enormous pressure and friction during cutting. Simultaneously, the titanium nitride coating on its outer wall further reduces the coefficient of friction between the tool body 3 and the workpiece, improving the tool's cutting life and surface finish. The main cutting tool 4 is integrated with the tool body 3; its bevel design allows it to cut into the workpiece at a specific angle during cutting. During use, the main cutting tool 4 first contacts the workpiece, performing the main cutting operation. Due to its shape and angle design, it effectively disperses cutting forces, reduces tool vibration and wear, and improves cutting efficiency and machining accuracy. The secondary cutting tool 6 is threadedly connected to the main cutting tool 4 via bolts 5. Its serrated design increases the number of cutting edges and the diversity of cutting angles. During cutting, the secondary cutting tool 6 assists the main cutting tool 4 in cutting, further improving cutting efficiency. Efficiency and machining quality are improved. When the secondary cutting tool needs to be replaced, it can be easily and quickly replaced by removing bolt 5. During the cutting process, the tool will inevitably be subjected to reaction force and vibration from the workpiece. At this time, the buffer assembly 2 plays an important role. When the tool is subjected to vibration and impact, the connecting block 204 compresses the spring 203, causing the tool body 3 to generate elastic displacement within a certain range. The support rod 202 provides a stable guide for the compression and extension of the spring 203, ensuring that the elastic effect of the spring 203 can effectively buffer the impact force on the tool. Through this elastic structure, the buffer assembly 2 can reduce the vibration and impact of the tool, protect the tool and machine tool equipment, extend the service life of the tool, and improve the stability and accuracy of machining.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A multi-bevel stepping short broach, characterized in that: The tool includes a tool holder (1), a buffer assembly (2) is installed on the side of the tool holder (1), and a tool body (3) is fixedly connected inside the buffer assembly (2). A main cutting tool (4) is fixedly connected to the end of the tool body (3), and a bolt (5) is threadedly connected to the outer wall of the main cutting tool (4), and a secondary cutting tool (6) is threadedly connected to the outer wall of the bolt (5).

2. The multi-bevel stepping short broach according to claim 1, characterized in that: The tool body (3) is made of high-strength cemented carbide, and the outer wall of the tool body (3) is coated with titanium nitride coating.

3. The multi-bevel stepping short broach according to claim 1, characterized in that: The tool body (3) and the main cutting tool (4) are integrated, and the main cutting tool (4) is designed with a bevel.

4. The multi-bevel stepping short broach according to claim 1, characterized in that: The secondary cutting tool (6) is serrated in shape, and the secondary cutting tool (6) and the main cutting tool (4) are made of the same material.

5. A multi-bevel stepping short broach according to claim 1, characterized in that: The secondary cutting tool (6) is connected to the main cutting tool (4) by bolts (5) to form a threaded detachable structure, and there are two bolts (5) symmetrically arranged about the horizontal central axis of the secondary cutting tool (6).

6. The multi-bevel stepping short broach according to claim 1, characterized in that: The buffer assembly (2) includes a fixed housing (201), a support rod (202) is fixedly connected inside the fixed housing (201), and a spring (203) is provided outside the support rod (202), and a connecting block (204) is fixedly connected to the top of the spring (203).

7. A multi-bevel stepping short broach according to claim 6, characterized in that: The support rod (202) and the spring (203) are arranged with their vertical central axes coincident, and the connecting block (204) forms an elastic structure with the fixed shell (201) through the spring (203), and the connecting block (204) and the tool body (3) are integrated.

Images