Axle made in China is worn on the middle or intermediate gear wheel bearing or intermediate cylindrical objects, but also a small part of the square. Axle made in China is rotatably supported parts and therewith to transmit rotary motion, torque or moment of mechanical parts. Generally circular rod-shaped metal, can have different diameters paragraphs. Machine rotary movement of the parts to be assembled on the shaft.
Structural design is to determine the axis of the shaft reasonable shape and size of the entire structure, an important step shaft design. It consists of a fixed part mounted on the shaft way type, size and location of parts, the nature of the load, orientation, size and distribution of the bearing blank, manufacturing and assembly process, installation and transportation type and size of the shaft, the Axle made in China deformation and other factors. Designers can design according to the specific requirements of the shaft, do several programs to compare, if necessary, in order to select the best design, the following are general shaft structure design principles:
1.save material, reduce weight, maximize the use of equal strength dimensions or large cross-sectional shape of the cross-sectional coefficient;
2.easy to pinpoint the shaft parts, solid, assembly, disassembly and adjustment;
3.using a variety of structural measures to reduce stress concentration and increase in strength;
4.ease of manufacturing and ensure accuracy.
The mechanical precision level, the level of operating speed, shaft surface roughness is not the same. Under normal circumstances, the surface roughness Ra of the supporting journal is 0.63-0.16 μm; mating journal surface roughness Ra value of 2.5-0.63μm.
