CNC lathe, also known as CNC lathe, namely computer numerical control lathe, is the most widely used CNC machine tool in China, accounting for about 25% of the total number of CNC machine tools. CNC machine tools are electromechanical integration products integrating mechanical, electrical, hydraulic, pneumatic, microelectronic and information technologies. It is a machine tool with the advantages of high precision, high efficiency, high automation and high flexibility in mechanical manufacturing equipment. The technical level of CNC machine tools and the percentage of their output and total ownership in metal cutting machine tools are one of the important indicators to measure the national economic development and the overall level of industrial manufacturing of a country. Numerical control lathe is one of the main varieties of numerical control machine tools. It occupies a very important position in numerical control machine tools. For decades, it has been widely valued and developed rapidly by all countries in the world.
Causes of deformation during part processing
Internal force effect leads to changes in part processing accuracy
It is necessary to make the clamping force greater than the cutting force of the machine in order to ensure that the parts are not loose when being processed under force and reduce the effect of internal force. The clamping force increases with the increase of cutting force, and decreases with the decrease. This kind of operation can make the mechanical parts stable in the process of processing.
II
Simple deformation of heat treated parts after machining
As for the processing of mechanical parts such as thin sheets, due to their large length and diameter, the straw hat is simply circuitous after the heat treatment is stopped. On the one hand, it will appear the phenomenon of bulging in the middle; on the other hand, due to the influence of various external factors, it will cause the circuitous phenomenon in the processing of parts. The occurrence of these deformation problems increases the probability of part machining deformation.
III
Part processing elastic deformation caused by external force effect
There are several reasons for elastic deformation in mechanical parts processing. First, if the internal structure of some parts processing is assumed to contain flakes, there will be higher requirements for operation methods. The second is the unevenness of the lathe and fixture, which makes the force on both sides of the part processing uneven when it stops fixing, resulting in the side with less force effect when cutting will show translation and part deformation under the force effect.
