| 主权项 |
1. A tooling fixture comprising:
a) a fixture body having guide structures, b) a threaded spindle mounted rotatably about a longitudinal axis thereof having a right-handed external thread in a first axial area and a left-handed external thread in a second axial area, said threaded spindle being provided with a central circumferential boss, c) a first sliding block screwed onto said right-handed external thread of said threaded spindle, said first sliding block including a vise clamping jaw on a top surface area, said first sliding block having sliding structures guided by said guide structures in said body and guided movably on said threaded spindle, d) a second sliding block screwed onto said left-handed external thread of said threaded spindle, said second sliding block including a vise clamping jaw on a top surface area, said second sliding block having sliding structures guided by said guide structures in said body and guided movably on said threaded spindle, e) a central support piece mounted on said body and located between said sliding blocks and rotatably connected to said central circumferential boss on said threaded spindle by externally threaded collars screwed into internal threads within said central support piece that engage said central circumferential boss allowing axial motion of said threaded spindle and adjustment of the longitudinal position of said threaded spindle with respect to said central support piece by adjusting the position of said threaded collars within said central support piece, f) wherein axial motion of said threaded spindle causes first and second sliding blocks to move towards each other or away from each other, and g) wherein adjustment of the longitudinal position of said threaded spindle causes said first and second sliding blocks to move in the same direction. |
