How to Manufacture and Process Deformable Parts Using CNC Machining?
The production and processing of lightweight, low-rigidity, low-strength, and compactly structured parts have long been a challenge for factory workshops. Such parts are costly to produce, prone to deformation due to force and heat during processing, and have a high scrap rate, which impacts order profitability. As a powerful CNC machine tool, the machining center can reasonably select cutting tools and precisely determine cutting parameters, thereby ensuring product accuracy. Therefore, CNC machining centers provide specific solutions for the actual processing of parts prone to it.
The Causes Of Part Deformation of CNC Machining
1. Force-induced deformation
These parts have thin walls and are prone to uneven thickness during machining and cutting under clamping force. Due to poor elasticity, the part’s shape is difficult to restore on its own.
2. Heat-induced deformable parts
The workpiece is lightweight and thin. During cutting, radial forces can cause heat-induced deformation, resulting in inaccurate dimensions.
3. Vibration-induced deformation
Under the influence of radial cutting forces, parts are prone to vibration and deformation, which can affect the dimensional accuracy, shape, positional accuracy, and surface roughness of the workpiece.
Machining Methods for Deformable Parts
Deformable parts, represented by thin-walled components, are increasingly being used in various machining applications. The machining of such parts can employ high-speed machining with small feed rates and high cutting speeds, which reduces the cutting forces acting on the workpiece during machining. Additionally, most of the cutting heat is carried away by the high-speed chips, thereby lowering the workpiece temperature and minimizing thermal deformation. During the machining process, compared to conventional machining, the high-speed cutting achieved by CNC machining centers eliminates the need for auxiliary processes such as semi-finishing and stress relief treatment, thereby shortening the machining cycle and improving production efficiency.