Hole cutter fine setting guide bush holder - adjusts angled bushing co-ordinating with four angle headed setting blocks

摘要

A hole cutter guide bushing with inclined end faces, is laterally clearance held in a housing. Four-equi-spaced housing screws, parallel to the housing move angled setting blocks vertically. Bushing and blocks faces interact; blocks' vertical movement sets the bushing laterally, with fine adjustment. A reamer (18) bushing (20) and housing (22) locates against a workpiece (12). A co-ordinated screws pair (26) sets two angle headed (24k) and a grooved (24r) blocks (24) vertically restrained (20a) bushing. an end cover (30g) restrains the screws axially. An index mark (22mm) reads screws head graduations (26s). Another screw pair adjusts co-ordinately.