Processing of aluminum alloy mechanical parts, also known as CNC processing, automatic lathe processing, CNC lathe processing, etc
General machine tools such as car use, milling, planing, drilling, grinding, etc. are used to process mold parts, and then necessary fitter repair is carried out. During the manufacturing process of assembling various mold NC parts, Z commonly used processing methods are milling and turning, which are collectively referred to as cutting. There are two kinds of cutting in CNC lathe processing plant, called "rough cutting" and "fine cutting" respectively. Then, what are the specific differences between rough cutting and fine cutting?
After "rough cutting", the NC machining workpiece is very close to the required shape and size, but there is still enough metal allowance on the machining surface for finishing, so that the workpiece surface is smooth and the size is accurate.
The processing process of aluminum alloy parts can separate the rough and finish machining. After the rough machining is completed, heat treat the parts, fully release the cutting stress and residual stress of the parts, and then finish machining, the processing quality of the parts will be greatly improved. The separation of rough and finish machining has the following advantages:
(1) It can reduce the influence of residual stress on machining deformation. After the rough machining is completed, it is recommended to use heat treatment to remove the stress generated by rough machining of parts, so as to reduce the impact of stress on the finish machining quality.
(2) Improve machining accuracy and surface quality. After the rough and finish machining are separated, the finish machining is only to process small allowance, resulting in less processing stress and deformation, which can greatly improve the quality of parts.
(3) Improve productivity. As rough machining is only to remove redundant materials and leave enough margin for finishing, size and tolerance shall not be taken into account to effectively exert the performance of different models of machine tools and improve cutting efficiency.
After the aluminum alloy parts are machined, the metal structure in the machining table will change greatly. Combined with the influence of cutting movement, it will lead to large residual stress. In order to reduce the deformation of the parts, it is necessary to fully release the residual stress of the material.
