20型粉碎机下体加工工艺及夹具设计—铣顶面（有CAD图纸）.pdf

Sichuan Vocational and Technical College 20 I 20 20 20 ,20 CAD 20 20 2 Abstract This paper introduces the process of the parts of the positioning, clamping, stepping up, drilling, and processing, fixture design related knowledge. The manufacturing technology and development trend of the 20 type of the machine body are summarized in this paper. On 20 type pulverizer nakedness performance, operating conditions, structure, technology requirements through understanding, on 20 type pulverizer nakedness processing procedures are studied and improved, puts forward the problems often appear in the process and ways to improve, make 20 type pulverizer nakedness precision and surface quality has been greatly improved, reduce the rejection rate, improve labor pro