There are already many common senses in machining, but for us, these common senses are not enough to sum up, and there are always places that are lost. Therefore, we need to make up for and update common sense so that we can grasp more frequently updated common sense. , so that the understanding of this aspect of mechanical processing to do all and meticulous.
Content One: Heat Treatment in Parts Machining Technology
The heat treatment in the part machining technology can usually be divided into two kinds of preparation heat treatment and finally heat treatment.
Preparation of heat treatment: The intention is to improve the mechanical properties and eliminate the internal stress in order to prepare for the final heat treatment, usually including annealing, normalizing, tempering and aging treatments. Prepare for heat treatment, usually after roughing.
After all, the heat treatment: its intention is to improve the hardness and wear resistance of the parts, including quenching, carburizing, nitriding and other technologies, usually after semi-finishing and before finishing.
Content 2: Precision of machining
The precision of machining is mainly reflected in the following aspects: the accuracy of the scale, the accuracy of several shapes, and the accuracy of each other's bearings. Among them, the accuracy of several shapes includes roundness, straightness, and flatness. The accuracy of each bearing includes parallelism and straightness. Degree and coaxiality.
Content 3: What are the methods for obtaining machining accuracy?
Scale Accuracy: These methods include trial cuts, adjustments, fixed-scale methods, and automatic control methods.
A lot of shape accuracy: There are mainly methods such as track method, forming method and generating method.
Azimuth accuracy of each other: There are mainly direct installation method, correct installation method, fixture installation method, etc.