Talking about what factors in precision machining will cause deformation of the workpiece

With the rapid development of the current society, industrialization has also been updated. Precision machining occupies a leading position in industrialization, and has brought quality improvement to industrialization. However, it also has bad effects, such as causing work. Deformation, so what factors cause the work to be deformed? If you want to know, let's find out with the editor.
The shape of the deformation is directly proportional to the complexity of the size, the ratio of the wall thickness and the width to the length, and is proportional to the stability and rigidity of the material. Therefore, the influence of these factors on the deformation of the workpiece is reduced as much as possible when designing the parts. Especially in the structure of large parts, the structure should be reasonable. Before processing, it is necessary to strictly control the defects such as the hardness and porosity of the blank to ensure the quality of the blank and reduce the deformation of the workpiece.
When clamping the workpiece, first select the correct clamping point, and then select the appropriate clamping force according to the position of the clamping point. Therefore, make the clamping point and the support point consistent as much as possible, so that the clamping force acts on the support, the clamping point should be as close as possible to the processing surface, and the selected position is not easy to cause clamping deformation.
When there are clamping forces in several directions on the workpiece, the order of the clamping forces should be considered. The clamping force should be applied first to make the workpiece contact the support, and it is not easy to be too large. The main reason for balancing the cutting force is The clamping force should act at the end.
Secondly, it is necessary to increase the contact area between the workpiece and the fixture or use the axial clamping force. Increasing the rigidity of the parts is an effective way to solve the clamping deformation, but due to the characteristics of the shape and structure of the thin-walled parts, it has a lower rigidity. In this way, under the action of clamping force, deformation will occur.
Increasing the contact area between the workpiece and the fixture can effectively reduce the deformation of the workpiece during clamping. For example, when milling thin-walled parts, a large number of elastic press plates are used to increase the force area of u200bu200bthe contact parts; when turning the inner diameter and outer circle of the thin-walled sleeve, whether it is a simple split transition ring or an elastic mandrel , Full-arc jaws, etc., are used to increase the contact area when the workpiece is clamped. This method is conducive to bearing the clamping force, thereby avoiding the deformation of the parts. The axial clamping force is also widely used in production. The design and manufacture of special fixtures can make the clamping force act on the end surface, which can solve the bending deformation of the workpiece due to the thin wall and poor rigidity of the workpiece.
The above is the editor's introduction to what factors in precision machining can cause work deformation. If you have any questions, please consult this site, website address: http://www.dghongye.com