Digital control lathe, also known as CNC lathe, namely computer digital control lathe, is a CNC machine tool with the largest use and the widest coverage in China, accounting for about 25% of the total number of CNC machine tools. CNC machine tools are mechatronics products integrating mechanical, electrical, hydraulic, pneumatic, microelectronic and information technologies. It is a machine tool with the advantages of high precision, high efficiency, high automation and high flexibility in mechanical manufacturing equipment.

The technical level of CNC machine tools and their percentage in the output and total ownership of metal cutting machine tools are one of the important symbols to measure the national economic development and the overall level of industrial manufacturing of a country. CNC lathe is one of the main varieties of CNC machine tools. It occupies a very important position in CNC machine tools. For decades, it has been widely valued by countries all over the world and has developed rapidly.

CNC lathe and turning center are automatic machine tools with high precision and high efficiency. It has a wide range of processing properties, and can process straight-line cylinder, oblique line cylinder, circular arc and various threads. It has various compensation functions of linear interpolation and circular interpolation, and has played a good economic effect in the mass production of complex parts. The following principles shall be followed for rational selection of CNC lathe:

1、 Selection principle

1. Preliminary preparation

Determine the process requirements of typical parts and the batch of processed workpieces. The function of the proposed NC lathe is to make preliminary preparations. The prerequisite for the rational selection of NC lathe meets the process requirements of typical parts.

The process requirements of typical parts are mainly the structural size, machining range and accuracy requirements of parts. According to the accuracy requirements, that is, the dimensional accuracy, positioning accuracy and surface roughness of the workpiece, the control accuracy of the NC lathe is selected. Reliability is the guarantee to improve product quality and production efficiency. The reliability of NC machine tool means that when the machine tool performs its function under specified conditions, it runs stably for a long time without failure. That is, the mean time between failures is long. Even if there is a failure, it can be recovered in a short time and put into use again. Select machine tools with reasonable structure, excellent manufacturing and mass production. Generally, the more users, the higher the reliability of the CNC system.

2. Purchase of machine tool accessories and tools

Machine tool accessories, spare parts and their supply capacity and cutting tools are very important for CNC lathes and turning centers that have been put into operation. When selecting a machine tool, the matching of tools and accessories should be carefully considered.

3. Pay attention to the identity of control system

4. Select according to the performance price ratio

Do not idle and waste functions and accuracy, and do not choose functions unrelated to your own needs.

5. Protection of machine tools

When necessary, the machine tool can be equipped with fully enclosed or semi enclosed protective devices and automatic chip removal devices.

The above principles should be comprehensively considered when selecting NC lathe machining and turning center.