What Factors Cause Part Deformation in CNC Machining?
Table of Contents
1. Clamping Force During Workpiece Setup
When multiple directions of clamping force are applied during CNC machining, the sequence of applying these forces must be considered. The clamping force that ensures the part is in contact with the support should be applied first and should not be too strong. The main clamping force used to balance the cutting load should be applied last. Improper clamping can easily lead to deformation of the part.
2. Radial Clamping Force and Contact Area
Increasing the contact area between the part and the fixture, or using radial clamping, can help reduce deformation. Enhancing the rigidity of the part is also an effective method. However, thin-walled parts often have inherently low rigidity due to their structure, making them more susceptible to deformation under clamping force.
4. Heat Treatment Process
Heat treatment is a common procedure in CNC machining, but it can also cause deformation, especially for small and thin parts. If the structural characteristics of the part are not well considered during heat treatment, issues like bending or warping may occur.
