Heavy cutting on CNC lathes refers to cutting with large cutting depth and large feed rate on CNC lathes to improve processing efficiency and reduce costs. Heavy cutting is usually suitable for some situations suitable for large feed rate and large cutting depth, such as roughing and batch production. The following are some key points about heavy cutting on CNC lathes:

1. Cutting parameters: During heavy cutting, CNC lathes usually increase cutting speed and feed speed to achieve faster cutting rate. At the same time, it is also necessary to consider the hardness and performance of the material to ensure that the cutting parameters are selected reasonably to avoid excessive wear of the tool or damage to the workpiece.

2. Tool selection: CNC lathes select tools suitable for heavy cutting, which usually need to have good wear resistance and cutting performance. CNC lathe carbide tools, coated tools or high-speed steel tools may be the choice for heavy cutting.

3. Tool cooling: Since CNC lathes generate a lot of heat during heavy cutting, tool cooling needs to be considered to prevent the tool from overheating and failing. Common tool cooling methods for CNC lathes include cutting fluid cooling or air cooling.

4. Clamping method: CNC lathes usually need to withstand large cutting forces during heavy cutting, so a reliable clamping method is needed to ensure that the workpiece is firmly clamped during the processing process to avoid damage to the workpiece or reduction in processing quality due to loosening.

5. Processing process monitoring: During the heavy cutting process of CNC lathes, it is necessary to regularly monitor the processing status, including cutting force, processing temperature, tool wear, etc. Adjust the cutting parameters in time to maintain the stability and controllability of the processing process.

In general, heavy cutting of CNC lathes is a processing method that improves processing efficiency and reduces costs, but it is necessary to pay attention to the reasonable selection of cutting parameters, tools and clamping methods, and strengthen the monitoring of the processing process to ensure processing quality and safety.