Method of processing gear reduction box

A method of processing gear reduction box, characterized in by comprising the following steps:

• 1) firstly, a central support disk and a scriber are used to scribe a center O2 of a driving gear hole, and a scribing template and the central support disk are used to scribe a center O1 of a driven gear hole, then the connecting line O1O2 of the centers of the driven gear hole and driving gear hole is extended to two end points A and B of the gear reduction box body, and sample holes are punched to facilitate alignment with a scribing needle;
• 2) the gear reduction box is hanged on a processing jig, and the gear box is rotated as a whole by left and right movement of a left adjustable support assembly and up and down movement of a right adjustable support assembly, thereby the center O2 of the driving gear hole and the center O1 of the driven gear hole form a horizontal line, and the connecting line AB of the centers of the driving gear hole and the driven gear hole is aligned by the scribing needle, such that the connecting line and a work table of a machine tool are horizontal, thereby the requirements for the processing precision of the center distance from the driving gear hole to the driven gear hole can be ensured;
• 3) firstly, each section of the gear box is roughly processed, then surfaces and holes of a handle, a bottom plate and an oil needle seat are processed, and the driving gear hole and the driven gear hole are finely processed after welding.