Patent ID: 9561569
Date: 2017-02-07
CPC Classifications: B23Q,B24B,B26B,B27B

Claim:
1. A power tool comprising: a housing including a main body portion and a nose portion, the nose portion defining an opening; a motor supported in the main body portion of the housing, the motor including an drive shaft that defines a motor axis; a first wobble shaft located on the drive shaft, the first wobble shaft defining a first wobble axis, the first wobble axis being arranged obliquely with respect to the motor axis; a first wobble member rotatably supported on the first wobble shaft and including a first wobble drive structure, the first wobble drive structure defining a first drive axis that is substantially perpendicular to the wobble axis; and a first tool driver moveably supported in the nose portion of the housing, the first tool driver including a first tool drive structure at one end that is coupled to the first wobble drive structure and including a first tool holder at the other end that is located exterior to the housing and is configured to releasably retain an accessory tool; wherein rotation of the drive shaft causes the first wobble shaft to wobble about the motor axis, wherein the first tool driver holds the first wobble member against the rotation of the first wobble shaft such that the first wobble member wobbles without rotating which results in an oscillating motion of the first drive axis of the first wobble member in a first plane that is parallel to the motor axis, and wherein the oscillating motion of the first drive axis causes the first tool driver to oscillate, wherein the first wobble axis, the first drive axis, and the motor axis intersect at a wobble fulcrum point, the wobble fulcrum point defining a center point of oscillation for the oscillating motion of the first drive axis, and wherein the first tool driver includes a first spindle portion that is rotatably supported in a passage in the nose portion of the housing for rotational movement about a first spindle axis.