Three Modes of Guide Bush for Swiss-type Lathes and Precautions When the Machine Tool Is Started up

This machine tool first originated in Germany and Switzerland. In the early stage, it was mainly used for precision processing of military equipment. With the continuous development and expansion of the industrialization process and the urgent demand of the market, it was gradually used in the processing of civilian products; the development of similar machine tools in Japan and South Korea Earlier than China, it was mainly used in the military industry in the early days. With the development needs after the war, it was gradually widely used in the manufacturing industry. Later, Taiwan, China introduced this technology and independently developed this type of equipment for different processing needs.

The role of guide bushing

1. Rotating guide bushing       

 advantage:：、

①The straightness requirements for materials are relatively low

       ②The guide bush and the material rotate together, so friction is less likely to occur in the direction of rotation, and jamming will not occur even when processing at high speed.

 shortcoming：

①The cost is relatively high.

       ②The remaining tail material is longer, resulting in a waste of material.

      ③The machining accuracy is lower than that of fixed guide bushings.

2. Fixed guide bushing       

 advantage：

①The requirements for straightness of materials are relatively high.

      ②The machining accuracy is higher than that of rotating guide bushings                

  shortcoming：

①The remaining tail material is longer, resulting in a waste of material

      ②The guide sleeve and the material do not rotate together, so friction is easy to occur in the direction of rotation. Generally, there should be an oil film between the guide sleeve and the material for lubrication. However, if the speed is increased for processing, the oil film may lose its lubricity and become stuck, burning the guide bushing.

3. No guide bushing  

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