Processing requirements for precision parts

Mechanical parts processing industry is the pillar industry of the national economy, with a very considerable prospect. In the processing of precision mechanical parts, the processing factory will have many requirements and regulations on the processing technology to ensure the qualified rate of the parts. So do you know the requirements of precision machining technology? Let’s take a look at it!

1. Parts shall be free of oxide skin, scratches, scratches and other defects that may damage the surface of parts, and burr and flash shall be removed;

2. After quenching and tempering, the parts are quenched at high frequency, tempered at 350-370 ℃, hrc40-45, carburized at a depth of 0.3mm, and aged at high temperature.

3. The tolerance of undeclared shape shall meet the requirements of gb1184-80, the allowable deviation of undeclared length dimension shall be ± 0.5mm, and the tolerance zone of casting shall be symmetrical to the basic dimension configuration of rough casting;

4. The radius of undeclared fillet R5, undeclared chamfer are 2 × 45 °, sharp angle is blunt;

5. The temperature shall not exceed 100 ℃, after the gear is assembled, the contact spot and side clearance of the gear surface shall meet the provisions of GB10095 and gb11365;

6. When assembling the hydraulic system, it is allowed to use sealing filler or sealant, but it shall be prevented from entering into the system. The parts and components (including purchased parts and outsourced parts) that enter into the assembly must have the qualification certificate of the inspection department before assembling.