What are the differences between high-precision shearing machine tools than ordinary?

Anhui Yongya believes that the emergence and development of surface coating technology is mainly due to the emergence and development of CNC tools. Because the coating can significantly increase the hardness of the tool, reduce the friction, and improve the cutting efficiency and service life, more than 80% of all kinds of cemented carbide indexable CNC tools have adopted coating technology.

Shearing machine blade, it is mainly used to apply shearing force to metal sheets of various thicknesses to perform shearing operations. There are several types of shears blades, mainly including pedal shears blades, mechanical shears blades, hydraulic shears blades and CNC shears blades.

What are the differences between high-precision shearing machine tools than ordinary?

High-precision shearing machine

　　What are the differences between high-precision CNC shears and ordinary shears? The main ones are as follows:

1. High-precision manufacturing quality

In order to stably process the surface of high-precision parts, the manufacturing of tools (including tool parts) has put forward stricter requirements than ordinary tools in terms of accuracy, surface roughness, and shape tolerances, especially indexable tools, in order to ensure The repetitive accuracy of the size of the insert tip (cutting edge) after indexing, the size and accuracy of key parts such as the tool body slot and positioning parts, and the surface roughness must be strictly guaranteed. At the same time, it is convenient for the tool to be set in the tool setting instrument And size measurement, the machining accuracy of the base surface should also be guaranteed.

2. Optimization of tool structure

Advanced tool structure can greatly improve cutting efficiency. For example, high-speed steel CNC milling tools have adopted wave-shaped blades and large helix angle structures in structure, and cemented carbide indexable tools have adopted internal cooling, vertical blade mounting, and modular Replaceable and adjustable structure, such as internal cooling structure, is not applicable to ordinary machine tools.

3, the wide application of high-quality tool materials

In order to prolong the service life of the tool and increase the strength of the tool, the body material of many CNC tools is made of high-strength alloy steel, and heat treatment (such as surface treatment such as nitriding) is applied to make it suitable for large cutting usage and the tool life Can be significantly improved (ordinary tools generally use quenched and tempered medium carbon steel). In terms of cutting tool materials, CNC tools use a variety of new grades of cemented carbide (fine particles or ultrafine particles) and superhard tool materials.

4. Reasonable selection of chipbreaker

The cutting tools used on CNC machine tools have strict requirements for chip breakers. During processing, the cutting tool will not work normally (some CNC machine tools, cutting is carried out in a closed state), so regardless of CNC turning, milling, drilling or boring machines, the blades are optimized for different processing materials and procedures. The chip groove type enables stable chip breaking during cutting.

5. Surface coating treatment

The shearing process of the shearing machine must be able to ensure that the shearing surface of the sheared sheet can meet the requirements of linearity and parallelism, and minimize the distortion of the sheet, so that high-quality finished products can be obtained.

However, after the shearing machine has been used for a long time, the gap between the shearing blades must be adjusted accordingly. Because if the gap is not appropriate, it will affect the quality of the sheet shear and the service life of the blade. Therefore, this aspect cannot be ignored, and sufficient attention should be paid.