Reciprocating and rotary power tool

摘要

An apparatus (10) is provided that allows a working element to undergo either rotary or reciprocating motion via a transmission system (12) that is very compact in terms of the amount of space it requires to convert the rotary output of the motor (24) into either rotary or reciprocating output of an output shaft (25) operably connected to the working element. The apparatus (10) has a barrel cam transmission including input (26) and output (28) members between which a clutch (30) and cam mechanism (22) are disposed for providing a rotary/reciprocating transmission system (12) with a compact design. The transmission (12), and in particular the clutch (30) and cam mechanism (22) thereof, has a sturdy construction to allow it to withstand shock forces such as axial loading that may be placed on the working element and transmitted to the transmission system (12) during tool operations without disruption of the same. <IMAGE>