Precision machinery parts processing deformation of machining
process, the analysis of the causes of the major in addition to ensure dimensional accuracy and surface roughness, but also pay attention to the external force caused by deformation of parts.
With regard to deformation, we must first understand the cause of the problem.
First of all, it should be noted that the external force caused by deformation of parts.
The main reason can be divided into two kinds.
One is in the process of precision machinery parts processing, under the influence of cutting force, parts will change the direction of stress, the causes of this change is part of itself insufficient rigidity, influenced by force, parts will produce deformation, the deformation generally clear, when the pressure of the net force, parts will be marked in the direction of the force, a serious distortion, lead to can't be the next steps, parts can't reach its reserve requirements, become a nonconforming product.
The second is the knife cut produced during hot deformation.
In the process of precision parts processing, the blade will happen with blank severe surface contact, will inevitably be the contact point of high temperature phenomenon, if there is no use appropriate means of cooling, coupled with poor heat dissipation tool, wear, plus material heat resistance and high temperature contact point, then will produce deformation during the process of precision machinery parts processing, make the desired shape of the product cannot be achieved.
The third reason is caused by parts when clamping deformation.
Parts before machining to clamp, it is also a deformation of the main reasons for forming parts, parts clamping, should choose appropriate clamping point and clamping force, clamping point of choice should reach the strong point and parts number is consistent, if a component has several clamping point, people should pay attention to the order of clamping and clamping of the various efforts, if improper operation, it is easy to appear when machining deformation.
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