What are the causes of deformation of precision mechanical parts processing? In the process of machining mechanical parts, in addition to ensuring dimensional accuracy and surface roughness, attention should be paid to the deformation of parts caused by external forces. About the mechanical precision parts machining deformation, first of all, we need to understand the causes of this problem.
First, the external force caused by the deformation of the parts; the reasons can be divided into two categories; one is in the process of machining precision mechanical parts, the parts will change the direction of the force under the influence of cutting force; the reason for this change is the lack of rigidity of the parts themselves. The part will be deformed under the influence of the force. The deformation is generally obvious. When squeezed by force, the part will protrude significantly in the direction of the force, resulting in serious deformation, unable to carry out the next step, the part can not reach the intended requirements as it should be, and become substandard products.
Second, the knife cutting process generated by the heat deformation; in the process of precision parts processing, the blade and the blank will have violent surface contact, the contact point will inevitably generate high temperature. If appropriate cooling methods are not used, coupled with differences in tool heat dissipation, increased wear, coupled with poor material heat resistance and high temperature at the point of contact, deformation will occur during the processing of precision mechanical parts, so that the product can not reach the required shape.
Third, parts processing in the clamping caused by deformation; parts need to be clamped before processing, which is also a major cause of parts deformation. When clamping parts, you should choose the appropriate clamping point and clamping force. The number of clamping points and support points of the part should be the same. If there are multiple clamping points on a part, attention should be paid to the clamping sequence and the clamping strength. Machining is also difficult if not done properly. It is easy to deform.
