What are the types of structure and materials of CNC tool handles?

CNC machining technology has been widely used in modern manufacturing industry, and the accuracy and efficiency of CNC machine tools largely depend on the quality of the tool and the tool handle. Therefore, the structure and material of CNC tool handle are very important. This paper will introduce the structure of NC tool holder and the commonly used material types.

First, CNC tool handle structure

CNC tool holder is a connecting element between the tool and the tool holder, its role is to connect the tool and the tool holder, and through the transmission of speed and torque to provide cutting capacity. The structure of NC tool handle mainly includes a clamping part and a connecting part.

1. Clamping part

The clamping part is the key component of NC tool handle. It is the part that connects the tool handle and the tool, and can meet the clamping requirements of different tools through different designs and matching methods.

In CNC machine tool machining, rotary tool is one of the commonly used cutting tools. In order to ensure the safe use and processing effect of the tool, the grip-type connection is generally used. Clamping connection methods include mechanical clamping, thermal expansion clamping, electromagnetic clamping and so on.

2. Connect parts

The connecting part is the connecting part of the CNC tool handle and the spindle. It is an important part of CNC machine tool cutting quality and processing efficiency. The connection part should be designed to meet the processing quality requirements, while ensuring that the tool will not be abnormal due to quality problems during the processing.

Second, CNC tool handle material

The choice of NC tool handle material directly affects NC machining effect and tool life. When selecting CNC tool handle materials, factors such as working environment, cutting force, rotation speed and wear resistance need to be considered. The following introduces commonly used CNC tool handle materials.

1. Steel

Steel is a common CNC tool handle material with good mechanical properties and durability. A wide variety of steel can meet different processing and use requirements. Commonly used steels include carbon steel, alloy steel, stainless steel and so on. Under normal circumstances, carbon steel shank is more common, the price is relatively low, but the production life is short. Stainless steel shank is more durable, but the price is higher.

2. Cemented carbide

Tungsten carbide is sintered from tungsten cobalt and other metals, with high hardness, high wear resistance and high corrosion resistance. Carbide shank due to high hardness, difficult to process, generally using molding processing technology.

3: Ceramics

The ceramic NC tool holder is a new type of engineering ceramic tool holder with high performance, which has the characteristics of high hardness, high wear resistance and high corrosion resistance. Due to its low coefficient of thermal expansion, it performs well in high temperature environments. However, its cost is high, and it is necessary to pay attention to the force situation during use to prevent breakage.

4. Carbon Fiber

Carbon fiber has the characteristics of low weight, high strength, high rigidity and high heat resistance. Carbon fiber shank is often used in high-speed cutting, easy to reduce load and strengthen rigidity, and can reduce vibration during high-speed rotation.

5. Summary

The structure and material selection of NC tool holder have an important influence on the machining quality and efficiency of NC machine tool. The proper selection of NC tool handle material can improve the tool life and processing efficiency. In the process of use, it is necessary to pay attention to factors such as cutting force, wear and maintenance cycle to ensure the normal use and long life of the CNC tool handle.