SCIENCE AND TECHNOLOGY ENGLIAH FOR MECHANICAL ENGINEERING Plate Cams And Cylindrical Cams Plate cams are made in the shape of a flat plate with either a contoured periphery or a cylindrical periphery with a contoured groove in one face, and a hub. They rotate around an axis, which is perpendicular to the plane of the plate and they impart mainly radial motion to their followers 轮毂 Cylindrical cams consist of a cylindrical body designed to rotate around its axis, with either one end or a peripheral groove, shaped to impart the desired motion to a follower, and in a direction mainly parallel to the cylinder's axis There are other types of cams; these are, however outside the scope of this chapterSCIENCE AND TECHNOLOGY ENGLISH FOR MECHANICAL ENGINEERING Plate Cams And Cylindrical Cams Plate cams are made in the shape of a flat plate with either a contoured periphery or a cylindrical periphery with a contoured groove in one face, and a hub. They rotate around an axis, which is perpendicular to the plane of the plate and they impart mainly radial motion to their followers. Cylindrical cams consist of a cylindrical body designed to rotate around its axis, with either one end, or a peripheral groove, shaped to impart the desired motion to a follower, and in a direction mainly parallel to the cylinder's axis. There are other types of cams; these are, however, outside the scope of this chapter. 轮毂