| 摘要 |
PURPOSE:To reduce the time required for preparatory steps and the number of fixtures available as well as to machine the yoke in an efficient manner, by setting the yoke having several work parts subject to metalcutting such as boring, planing and grooving or the like to a machine tool, while machining these several work parts without removing the yoke. CONSTITUTION:A jig 6 is fitted in a shaft hole 7 of a yoke 1 which is attached to a face plate of a lathe turning machine by using fixtures. And, the yoke 1 is made to rotate around an axis 8 of the shaft hole of a cross spider whereby a shaft hole part 2, a plane surface 3 and each of groove parts 4 and 5 required for setting a snap spring are all machined. At this time, it is important to know that if the yoke is once set up to the lathe turning machine, machining should be continued to take place to the last without dismantlement, never. Therefore, a lot of jigs and fixtures become useless so that not only the time required for preparatory steps can be reduced but also accuracy among work parts can be improved in addition. |
