An introduction was made on the design of the essential processing drawing and the part_processing procedure drawing, the selection of the pressing direction, the makeup design of the technological process, and the location of the drawing ribbings in designing the pressing process of the front part of the right_rear wheel hood of Fukang cars.

In this paper, a new griding method is introduced to calculate strain and stress contour for rear wheel cover of CA142 truck and the reasons for stamping defects are analyzed.

Comparison tests are done on a A186F carding machine under such conditions as a back stationary flat system with suction device is equipped on the back plate with the suction on one side and on two sides.

The result shows that either too large or too small wind′s flow at back plate is unfavorable to card sliver quality,and a wind′s flow about 180～240 m~3/h is advantageous under such conditions.

Adding a separate web purifier at the back plate of a cotton card is favorable to improving the quality of the sliver and the resulted yarn.

Influence on Yarn Quality of the Cotton Web Cleaner Position in Carding Machine Back Cover Guard;

Testing Research on Setting Cotton Web Cleaner in Back Cover Guard of Carding Machine;