| 摘要 |
PURPOSE:To simplify the structure, reduce the size and smooth the indexing revolution of a turntable, by so designing the table that it can turn by a preset angle. CONSTITUTION:The lower end of a rotation shaft 2 is inserted and fixed to the lower center of a frame 1 and a turntable 3 is held swivel and vertically movable on the upper projection of the shaft 2. The lower side of the table 3 has a set of continuous cam grooves 11 composed of mutually connected No.1 cam grooves 9 and No.2 cam grooves 10, both having four grooves respectively. One end of each passage control cam member 12 is held turnable by a supporting concave 13 formed on the lower side of an indexing cam plate 6 near the peripheral crossing of both grooves 9, 10. a fitting pin 32 is projected above the tip of a poston rod 30. This indexing device is simple in structure, small in size and smooth in turning the table for indexing. |
