What details need to be paid attention to when machining shaft parts

Shaft parts are a common type of parts. Its structure is a rotating body, and its length is generally greater than its diameter. It is widely used in various mechanical equipment to support transmission components, transmit torque and bear loads. The processing of shaft parts must follow certain rules. You can learn about the specific processing steps and some problems that need attention through this article.

　　 One, the basic processing route of shaft parts

　　 The main processing surface of shaft parts is the outer surface and the common special-shaped surface. Therefore, according to the various precision grades and surface roughness requirements, a more appropriate processing method should be selected. The basic processing routes can be summarized into four.

　　 First is the processing route from rough turning to semi-finishing turning, and then to finishing turning. This is also the most important process route selected for the outer circle machining of shaft parts of common materials; secondly, from rough turning to semi-finishing. Finish turning, then rough grinding, and finally adopt the processing route of fine grinding. For ferrous metal materials and precision requirements, the surface roughness requirements are small and the parts that need to be hardened, this processing route is the best choice, because Grinding is the most ideal subsequent processing procedure; the third route is from rough turning to semi-finishing turning, then finishing turning and diamond turning. This processing route is specially used to process non-ferrous metal materials because the hardness of non-ferrous metals is relatively small. , It is easy to block the gaps between sand grains. It is usually not easy to obtain the required surface roughness by grinding, and it is necessary to use fine turning and diamond turning procedures; the last processing route is from rough turning to semi-finishing turning to rough grinding , Finish grinding, and finally finish processing. This route is a kind of processing route that is often used for parts that have been hardened for ferrous metal materials, and require high precision and low surface roughness values.

　　 2. Pre-processing of shaft parts

　　 Before turning the outer circle of 　　 shaft parts, some preparation processes must be carried out. This is the pre-processing process of shaft parts. The most important preparation process is straightening. Because the workpiece blank is often bent and deformed during the manufacturing, transportation and storage process. In order to ensure reliable clamping and uniform distribution of machining allowance, in cold state, various presses or straightening machines are used for straightening.