Screw wrench for fixing minimum quantity lubrication adjustment screw, has cylindrical guide bushing arranged between handle and hexagonal end piece, where guide bushing is smaller than clamping depth diameter of tool holder

摘要

The wrench (1) has a cylindrical guide bushing (2) arranged between a handle and a hexagonal end piece (3), where the guide bushing is 0.1 to 3 mm smaller than a clamping depth diameter of a tool holder. The guide bushing comprises a tapered stop. A tapered junction (4) provided at an end of the end piece serves as a stop for a complementary shaped pin in a minimum quantity lubrication adjustment screw that comprises a funnel-shaped opening, a coolant pipe and an outer thread.