| 摘要 |
<p>PURPOSE:To shape and polish a cylinder fitting surface with high accuracy, by providing a cylinder fitting through-hole for VTR and a plurality of component fitting through-holes for a chassis, aluminum-die-casting the stand to the chassis incorporatedly and using the component fitting through-holes for positioning. CONSTITUTION:A lot of component fitting holes 1a, a cylinder fitting through- hole 1b and a notch 1c for gate are pressed to an aluminum plate at the same time, and four sides made of Al plates are folded to form a chassis 1 for reinforcement. The chassis 1 is inserted with a metal mold for a cylinder fitting stand 2, molten Al is poured to die-cast a cylinder fitting stand and an aluminum pouring gate. A tool is inserted to a part of the holes 1a of the chassis 1 after molding, and after the tool is positioned and fixed, three positioning projections 2a of the fitting stand 2 are shaped and polished and a through-hole 2b penetrating the projections 2a is made. A component molding metal mold is mounted on the chassis 1 to form a support block 3 for a guide post at a part of the holes 1a. Thus, the shaping and plishment with high accuracy can be done without using a special fixing means and the cylinder fitting stand 2 is manufactured.</p> |
