| 摘要 |
A cutting tool mechanism (11) for providing a cutting, abrading or grinding action is disclosed. The mechanism (11) has an inner circular part (17) having teeth (19) extending radially outwardly, a surrounding circular part (25) having inner teeth (27) extending radially inwardly. The circular parts (17) and (25) co-operate by engagement their teeth (19) and (27). Rotation of one circular part causes the other to move constrained by the engagement of the teeth in an orbital, oscillatory or impact motion. An input coupling (81) is provided for transmission of rotary motion, and an output coupling (37) is provided to transmit said orbital, oscillatory or impact motion to a blade (13). In further embodiments, the surrounding circular part (25) can be provided with outwardly extending teeth and surrounded by a further outer circular part with inwardly extending teeth, to cooperate with the outwardly extending teeth, to provide more complex orbital, oscillatory or impact motion. |
