First, the shaft parts and structural characteristics of the function

mainly used for supporting the drive shaft parts (gears, pulleys, etc.), load bearing, transmission torque and ensure that parts mounted on the shaft rotating accuracy

 

According to the shaft length L and diameter d ratio, can be divided into rigid shaft (L / d ≤ 12) and a flexible shaft (L / d> 12) two.

Shaft usually internal and external cylindrical surface, internal and external conical surface, end, level surface, screw, keyway, composed of horizontal holes and grooves.

Second, the technical requirements of shaft parts, materials and rough

Loaded journal bearings and transmission parts installed at the shaft surface, usually a major surface of the shaft, its dimensional accuracy, shape accuracy (roundness, cylinder etc.), position accuracy (concentricity, and the end of the vertical etc.) and surface roughness were higher in the developing shaft machining process planning should focus on factors to be considered.

45 shaft parts are often used in ordinary steel; for medium accuracy and high speed shaft available 40Cr; for high-speed, heavy load conditions, such as the shaft can be used to work20Cr, 20CrMnTi and other low-carbon alloy steel for case hardening, or 38CrMoAlA nitride steels nit riding.


Shaft of the rod blank is the most commonly used materials and forgings, only certain large, complex structure of the shaft before using casting (cast steel or ductile iron).
 
 



Other News:
Processing technology and equipment commonly used in bearings
Way of maintenance crankshaft
FAC bearing inner ring fixation methods
The choice of common furnace
Turbine Overhaul the scoop side on the coupling
Preparation before install lathe bearings
Large quenching equipment exhausts devices
Precision Linear Rolling Guide Features