When choosing processing tools for CNC lathes, you need to consider the following aspects:

1. Processing materials: CNC lathes select appropriate tool materials based on the material of the workpiece to be processed. For example, for processing steel, commonly used tool materials include carbide, high-speed steel, etc.; while for processing aluminum alloys, you can choose carbide or multi-layer coating tools.

2. Tool types: CNC lathes select appropriate tool types according to the needs of processing operations, such as turning tools, milling cutters, drill bits, etc. At the same time, consider the complexity and requirements of the processing process and choose single-edged or multi-edged tools.

3. Tool geometry: Based on the processing characteristics and requirements of the CNC lathe, select the appropriate tool geometry, including tool edge angle, blade length, tool tip radius, etc. Different geometries affect cutting forces, surface quality and machining efficiency.

4. Tool coating: CNC lathes should consider choosing coated tools, etc., which can improve the wear resistance and thermal stability of the tool, extend the service life of the tool, and improve the quality of the machined surface.

5. Processing parameters: CNC lathes select appropriate tool specifications and sizes according to the processing process parameters, including tool diameter, cutting depth, feed speed, etc., to ensure processing quality and efficiency.

6. Cost consideration: CNC lathes comprehensively consider the price, performance and service life of the tool, and select tools with higher cost performance to achieve economic benefits.

Taking the above factors into consideration, CNC lathe tools suitable for specific processing tasks can be selected to ensure processing quality, improve production efficiency and reduce costs.