Cold extrusion process and machining process for the cup with bosses are compared.

The surface charge density of the infinite conductor and wedge-shaped conductor as well as the gibbous surface of the half-columniform conductor is calculated in detail.

Study and practice of machining cylinder cam by means of plain work-piece programming;

The three element complex is regarded as a mathematic modeling tool in this paper and it is,directly,used to the profile design of cylinder cam mechanism with a follower of straight-line motion by means of the vector method.

The method in automatic computer aided programing and computer aided manufacturing of cylinder cams, which have been widely used in industry, mechanism, has been researched and utilized.

Under Solid Works environment,uses the VBA development kit,realizes the cylindrical cams 3D parameterization design method and the step.

The three dimensional CAD software of cylindrical cams is programmed based on the AUTOCAD software, and the NC program is created automatically based on the XK714/1 NC milling machine with this cylindrical cams CAD software, so the machining efficient of cylindrical cams are improved greatly .

The characters of contact lines on the rollers within four kinds of cylindrical cam mechanisms are analyzed first using the theory of conjugating surfaces and the conclusion got then that cylindrical cams′ contours are not torses in this paper.