Rotary tool adapter.

摘要

A rotary tool adapter is made in two separable parts: a low-speed unit A to be fitted to the machine tool and a high-speed unit B which holds the tool. In order to provide the speed increase the assembled adapter contains a planetary gear assembly which straddles the interface between the two units. The high-speed unit B contains the outer ring 24, the planets 25 and the sun 22, which is part of the output shaft 20, while the low-speed unit A contains a driving means 9 (10) for driving the planets so as to rotate the sun 22 at an increased speed. By using either a straight or (as shown) a right-angled low-speed unit A and by having various sizes of high-speed unit B a wide variety of configurations is possible with a small number of basic parts.