What are Common Problems Encountered When Machining CNC Precision Parts?

1) Workpiece Fracture

CNC precision parts fracture can be categorized as wall fracture and bottom fracture. Wall fracture is caused by improper blank material shape and dimensions, or excessive excess material. Bottom fracture is caused by deformation exceeding the material's allowable deformation range, or excessive deformation force exceeding the material's bearing capacity. The solution is to accurately calculate the blank dimensions, rationally determine the blank shape, process parameters, and the die corner radius R, and to add a heat treatment step.

2) Machined Aluminum Parts Surface Scratches and Wear on CNC Punch Press Fixtures

This problem is primarily caused by high speeds, high pressures, and relatively high temperatures, resulting in rough fixture surfaces and adhesion. The solution is to select self-lubricating fixture materials with minimal compatibility between the mold material and the stainless steel. Proper cutting oil is also crucial; a lubricant typically consisting of chlorinated paraffin wax and molybdenum disulfide is used to ensure optimal finished CNC aluminum parts.

Workpiece scratches are caused by burrs on the blank, which scratch the CNC milling parts surface during the forming process. Therefore, deburring the blank is essential.

3) CNC machining parts cracking can be caused by low-temperature forming, as well as deformation and excessive internal stress within the workpiece. Therefore, stainless steel should be avoided from sheet stamping at 0°C.

The above summarizes some common problems and solutions in CNC metal parts processing. For more information on other hardware-related topics, please visit the Huaner homepage for more information.