The characteristics of machining and manufacturing are not only related to the company's interests, but also related to the safety factor. While generating economic benefits for the company, it can reasonably reduce the probability of safety production accidents. Therefore, preventing the deformation of the part during the processing of the part seems very important. So what is the cause of product deformation in mechanical processing?


1 Analyze the causes of deformation in the processing of mechanical parts
1.1 The internal force causes the machining accuracy of the parts to change
In lathe processing, the centripetal force is usually used to clamp the parts with the three-jaw or four-jaw chuck of the lathe, and then the mechanical parts are processed. At the same time, in order to ensure that the parts do not loosen when subjected to force and reduce the effect of the internal radial force, the clamping force must be greater than the mechanical cutting force. The clamping force increases with the increase of the cutting force, and then decreases with the decrease. This kind of operation can make the mechanical parts receive a stable force during the machining process. However, after the three-jaw or four-jaw chuck is released, the machined parts will be very different from the original ones, some are polygonal, and some are elliptical, with large deviations.


1.2 It is easy to produce deformation problems after heat treatment
For sheet-like mechanical parts, due to their very large long diameter, the straw hat is likely to bend after heat treatment. On the one hand, there will be a phenomenon of bulging in the middle, and the plane deviation will increase. On the other hand, due to the influence of various external factors, the parts will be bent. These deformation problems are not only caused by the changes in the internal stress of the parts after heat treatment, but also because the operator's professional knowledge is not solid, and the structural stability of the parts is not well understood, which increases the probability of deformation of the parts.





2 Improvement measures for machining deformation of mechanical parts
In actual parts processing, there are many factors that cause parts to deform. In order to fundamentally solve these deformation problems, operators need to carefully explore these factors in actual work, and combine the essence of work to formulate improvement measures.


2.1 Use special fixtures to reduce clamping deformation
In the machining process of mechanical parts, the requirements for refinement are very strict. For different parts, different special tooling can be selected to make the parts less likely to be displaced during the processing. In addition, before processing, the staff also need to make corresponding preparations, comprehensively check the fixed parts, check the drawings, and check whether the position of the mechanical parts is correct to reduce the deformation of the clamping.


2.2 Trimming
Parts are prone to deformation problems after heat treatment, which requires measures to ensure the safety performance of the parts. After the mechanical parts are processed and deformed naturally, they must be trimmed with professional tools. When trimming the processed parts, it is necessary to follow the industry standard requirements to ensure the quality of the parts and prolong their service life. This method is most effective when the part is deformed.


There are many factors that cause deformation of machined products, and different countermeasures need to be adopted for different reasons. Hangzhou Machinery Processing Factory believes that in the operation process, it is necessary to pay attention to every key point of mechanical processing and manufacturing, gradually improve the processing process, and strive to reduce the property loss to a very low level to ensure the smooth operation of industrial equipment.