Accessories for oscillating power tools
An accessory for an oscillating power tool includes an attachment portion configured to be coupled to an oscillating power tool and a working portion extending generally along a longitudinal axis. The working portion has a rear end portion coupled to the attachment portion, a front cutting edge opposite the rear end portion, a first side edge extending from the front cutting edge to the rear end portion, and a second side edge opposite the first side edge and extending from the front cutting edge to the rear end portion. The working portion includes an at least partially curved surface that contains the longitudinal axis. At least a portion of the first side edge includes a first side cutting edge portion.
1 . An oscillating accessory, comprising:
an attachment portion configured to be coupled to an oscillating power tool to oscillate about an oscillating axis;
an intermediate portion coupled to the attachment portion; and
a working portion coupled to the intermediate portion and configured to cut a curved opening in a workpiece in response to oscillation of the attachment portion about the oscillating axis, the working portion extending generally along a longitudinal axis that is parallel to the oscillating axis, the working portion having a rear end portion coupled to the attachment portion, a front cutting edge opposite the rear end portion, a first straight side cutting edge extending from the front cutting edge to the rear end portion, and a second straight side cutting edge opposite the first straight side edge and extending from the front cutting edge to the rear end portion,
wherein the working portion is selectively moveable relative to the attachment portion and the oscillating axis to facilitate adjustment of a position of the working portion relative to the attachment portion to move between a rearmost position closer to the oscillating axis and a forwardmost position further from the oscillating axis to change the size of the curved opening cut by the working portion,
wherein the working portion includes an at least partially curved surface that contains the longitudinal axis and that has a single curvature,
wherein the first straight side cutting edge, the second straight side cutting edge, and the front cutting edge of the curved surface of the working portion are configured to cut the curved opening in the workpiece, and
wherein the at least partially curved surface, the first side cutting edge, and the second side cutting edge extend along an entirety of the working portion from the front cutting edge to the rear end portion.
2 . The accessory of claim 1 , wherein the at least partially curved surface has a top concave face that faces toward the attachment portion.
3 . The accessory of claim 1 , wherein a position of the working portion relative to the attachment portion is user adjustable between a first position and a second position, wherein in the first position the front cutting edge is closer to the attachment portion than in the second position.
4 . The accessory of claim 1 , wherein the attachment portion includes a planar portion that lies generally in a first plane.
5 . The accessory of claim 4 , wherein the at least partially curved surface is tangent at the longitudinal axis to a second plane that is generally parallel to the first plane.
6 . The accessory of claim 1 , wherein the front cutting edge has a plurality of front teeth, the first side cutting edge has a plurality of first teeth, and the second side cutting edge has a plurality of second teeth.
7 . The accessory of claim 1 , wherein the intermediate portion is angled so that the working portion is offset from the attachment portion.
8 . The accessory of claim 1 , wherein the working portion defines a slot and the working portion defines a fastener receivable in the slot and configured to retain the working portion in a plurality of positions relative to the attachment portion and the oscillating axis.
9 . The accessory of claim 1 , wherein the at least partially curved surface has a radius of curvature between approximately 2 inches and approximately 8 inches.
10 . The accessory of claim 1 , wherein the at least partially curved surface defines a cord extending from the first side cutting edge to the second side cutting edge.
11 . The accessory of claim 10 , wherein the cord has a cord length between approximately 0.70 inches and approximately 2 inches.
12 . The accessory of claim 10 , wherein the at least partially curved surface defines a sagitta extending from the longitudinal axis to the cord, the sagitta being perpendicular to the cord.
13 . The accessory of claim 12 , wherein the sagitta has a length between approximately 0.015 inches and approximately 0.127 inches.
14 . The accessory of claim 1 , wherein the front cutting edge has a front curvature that is substantially the same as a surface curvature of the at least partially curved surface.
15 . An oscillating accessory, comprising:
an attachment portion coupled to an oscillating power tool for oscillation about an oscillating axis, the attachment portion including a planar portion lying generally in a first plane;
a working portion to cut a curved opening in a workpiece in response to oscillation of the attachment portion about the oscillating axis, the working portion extending generally along a longitudinal axis that is parallel to the oscillating axis, the working portion having a rear end portion coupled to the attachment portion, a front cutting edge opposite the rear end portion, a first straight side cutting edge extending from the front cutting edge to the rear end portion, and a second straight side cutting edge opposite the first straight side edge and extending from the front cutting edge to the rear end portion, the rear end portion defining an opening therethrough, wherein the working portion includes a curved surface, and the first straight side cutting edge, the second straight side cutting edge, and the front cutting edge of the curved surface of the working portion are configured to cut the curved opening in the workpiece; and
an intermediate portion coupled between the attachment portion and the working portion, the intermediate portion including an angled surface that extends from and is transverse to the first plane, and a horizontal surface that is generally parallel to the first plane such that the horizontal surface is offset from the attachment portion, the horizontal surface defining an axial slot therethrough that extends along a slot axis to facilitate selective movement of the working portion relative to the attachment portion and the oscillating axis along the slot axis to a plurality of positions between a rearmost position closer to the oscillating axis and a forwardmost position further from the oscillating axis to change a size of the curved opening cut by the working portion.
16 . The oscillating accessory of claim 15 , wherein:
the curved surface has a single curvature, and
the curved surface, the first side cutting edge, and the second side cutting edge extend along an entirety of the working portion from the front cutting edge to the rear end portion.
17 . The oscillating accessory of claim 16 , wherein the curved surface has a top concave face that faces toward the attachment portion.
18 . The oscillating accessory of claim 16 , wherein the axial slot extends along a slot axis that is parallel to the first plane.
19 . The oscillating accessory of claim 15 , further comprising a fastener configured for receipt through the axial slot and the opening to releasably secure the working portion to the intermediate portion, the fastener being moveable along the axial slot to facilitate the movement of the working portion.
20 . An oscillating accessory, comprising:
an attachment portion, including a planar portion lying generally in a first plane, configured for coupling to an oscillating power tool for oscillation about an oscillating axis;
an intermediate portion coupled to the attachment portion, the intermediate portion including an angled surface that extends from and is transverse to the first plane, and a horizontal surface that is generally parallel to the first plane such that the horizontal surface is offset from the attachment portion, the horizontal surface defining an axial slot therethrough that extends along a slot axis that is parallel to the first plane; and
a working portion to cut a curved opening in a workpiece in response to oscillation of the attachment portion about the oscillating axis, the working portion extending generally along a longitudinal axis that is parallel to the oscillating axis, the working portion having a rear end portion coupled to the attachment portion to define an opening therethrough, a front cutting edge opposite the rear end portion, a first straight side cutting edge extending from the front cutting edge to the rear end portion, and a second straight side cutting edge opposite the first straight side edge and extending from the front cutting edge to the rear end portion, and a fastener configured for receipt through the axial slot and the opening to releasably secure the working portion to the intermediate portion, the fastener being moveable along the axial slot to facilitate movement of the working portion relative to the attachment portion and the oscillating axis along the slot axis to a plurality of positions between a rearmost position closer to the oscillating axis and a forwardmost position further from the oscillating axis to change a size of the curved opening cut by the working portion, wherein the working portion includes a curved surface, and the first straight side cutting edge, the second straight side cutting edge, and the front cutting edge of the curved surface of the working portion are configured to cut the curved opening in the workpiece.