There must be something we should pay attention to in the process of processing. In the process of work, it is very easy to cause problems if you do not pay attention to them. Problems will directly harm the product quality of the goods. Therefore, in order to better prevent such problems, we need to pay attention to them in the case of production and manufacturing. If problems occur, we must immediately deal with them, but we must first find out what is going on before dealing with them. Then let's learn about the causes of deformation in precision mechanical parts?
1. Internal force effect leads to modification of part processing precision
During the machining of mechanical parts, the effect of cohesion is generally used. The three jaw or four jaw chuck of the CNC lathe is used to clamp the parts tightly, and then the machining of mechanical parts is terminated. In addition, in order to better ensure that the parts will not loosen when stressed and reduce the actual effect of internal axial force, it is necessary to make the clamping force exceed the cutting speed of mechanical equipment. The clamping force increases with the increase of cutting speed and decreases with the decrease. Such operation can make the mechanical parts bear the force steadily in the whole process of processing. However, after the three jaw chuck or four jaw chuck is loosened, the machined mechanical parts will be far different from the original ones, some showing irregular graphics, some showing oval shape, showing a great deviation.
2. Simple deformation after heat treatment
As the long diameter of the sheet type mechanical parts is very large, it simply presents a zigzag situation after the thermal emergency disposal. On the one hand, there will be a situation of bulge in the middle, and the plane will tend to expand. On the other hand, because of the hazards of various external factors, the parts will cause twists and turns. This kind of deformation problem is not only caused by the change of thermal stress of the parts after the thermal emergency treatment, but also because the operator's professional knowledge is not solid and does not understand the structural stability of the parts, which subsequently expands the probability of part deformation.
3. Elastic deformation caused by external force
There are several key reasons for elastic deformation of parts in precision mechanical parts processing. First, if the internal structure of some parts is assumed to have a sheet shape, there will be higher requirements for the operation method. Otherwise, when the operator terminates the positioning and clamping of the parts, he cannot stop matching with the overall planning of the engineering drawing, simply causing elastic deformation. The other is the unevenness of the CNC lathe and tooling fixture, which makes the force on both sides of the part uneven when terminating the fixation, resulting in the side with less force effect when cutting will show translation transformation and part deformation under the force effect. Third, the positioning of parts during processing is not scientific, which reduces the rigidity and compressive strength of parts. Fourthly, the existence of cutting speed is also one of the causes of elastic deformation of parts. The elastic deformation caused by this different reason shows the effect of external force on the processing quality of precision mechanical parts.
The above aspects are the reasons for the deformation in the processing of precision mechanical parts. The processing function of mechanical parts is not only related to the company's interests, but also related to safety. It can effectively reduce the probability of safety accidents while generating economic benefits for the company. Therefore, safety is very important.
