The Main Function Of Shaft To Non-Standard Parts Machining

Publish Time: 05/27 2021 Author: Site Editor Visit: 14433

The technical requirements for Cnc Machining non-standard parts are generally formulated according to the main functions and working conditions of the shaft, usually as follows:

Surface roughness of precision parts Generally, the surface roughness of the shaft diameter matched with the transmission part is Ra2.5~0.63μm, and the surface roughness of the supporting shaft diameter matched with the bearing is Ra0.63~0.16μm.
Mutual position accuracy of precision parts The position accuracy requirements of non-standard parts Cnc Machining are mainly determined by the position and function of the shaft in the machine. Generally, it is necessary to ensure the coaxiality requirements of the shaft journal of the assembly transmission part to the supporting shaft journal, otherwise it will affect the transmission accuracy of the transmission part (gear, etc.) and cause noise. For ordinary precision shafts, the radial runout of the matching shaft segment to the supporting journal is generally 0.01~0.03mm, and the high-precision shaft (such as the main shaft) is usually 0.001~0.005mm.
Geometric shape accuracy of precision parts The geometric shape accuracy of shaft non-standard parts Cnc Machining mainly refers to the roundness and cylindricity of the journal, outer cone, Morse taper hole, etc., and the tolerance should generally be limited within the dimensional tolerance range . For the inner and outer round surfaces with higher precision requirements, the allowable deviation should be marked on the drawing.
Machining dimensional accuracy of non-standard parts. In order to determine the position of the shaft by machining the bearing journal, it usually requires high dimensional accuracy (IT5~IT7). Generally, the dimensional accuracy of the shaft journal of assembling transmission parts is relatively low (IT6~IT9).

Advanced non-standard precision parts Cnc Machining equipment and testing equipment, advanced Cnc Machining equipment make the Cnc Machining of precision parts easier, higher precision, and better results. In the process of non-standard Cnc Machining parts, the foundation is the most important, and the same is true for the machining of precision mechanical parts. The fine datum is always processed first, and then the other surfaces are positioned and processed with the fine datum.

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