The design topic of this paper is "Two-stage expansion spur gear reducer". Design the structure of the reducer, and complete the assembly drawing, parts drawing, process design and tooling design of the reducer of the deceleration drive device.

The specific contents of this design mainly include: the overall design of slow transmission device; Motor selection; Determination of transmission ratio; Calculating motion and dynamic parameters; Various gear designs; Design of various shafts and accessories; Structural design of equipment cabinet; Determination of lubrication sealing mode; Write design instructions, etc.

This is not a copy of Zhong Bo. I found it entirely by myself. I hope the landlord will adopt it.