Tool fixing means

摘要

The tool holder consists of a main section (1) rotatable relative to an outer component (2) by means of bearings (3), and an arm (9) which is connected to the main section by screws (10) and acts as a support for the long tool. The lower end of the arm has a clearance take-up screw (11) and a pulley (12). In a variant of the design the arm can have a two-section sleeve for the tool, attached to it by screws. It can also have regulating rings to reduce friction.