Back spotfacing tool
AssigneeR. Steiner Technologies, Inc.
InventorRudolph Steiner
Life of this patent
Estimating the term…
Abstract
Adjacent one end thereof the shank of a back spotfacing tool has therein a transverse slot, and a cutter mounting pin which extends between opposite sides of the slot parallel to the shank axis. A cutter has in one end thereof a U-shaped slot which is inserted removably over the pin to support the cutter for limited pivotal movement about the pin into and out of an operative position in which a flat, external, limit surface formed on the side of the cutter remote from the open end of its U-shaped slot engages the bottom of the slot in the shank to support the cutter for a cutting operation, and to prevent removal of the cutter from the pin. The cutter may be swung manually to an inoperative position in which the open end of its slot is positioned to permit removal of the cutter from the pin, or the replacement thereof over the pin.
Claims11
A tool, comprising
- a cylindrical shank attachable at one end to a tool spindle for rotation thereby, and having therein adjacent its opposite end a slot which extends transversely of the axis of said shank,
- a pin secured in said shank to extend transversely across said slot and parallel to said axis of the shank, and
- a cutter having therein adjacent one end thereof a generally U-shaped slot which opens on one side of said cutter,
- said U-shaped slot being slidably insertable over said pin releasably to mount said cutter on said shank for pivotal movement about said pin into and out of an operative position in which said cutter projects radially from said shank, and in which position a limit surface on said cutter at the side thereof remote from the open end of said U-shaped slot engages the bottom of said slot in said shank in said cutter, thereby to prevent removal of said cutter from said shank.
A cutter for use with a tool shank of the type having a cylindrical pin extending transversely across a transverse slot formed in the tool shank adjacent one end thereof, comprising
- a cutter body having in one end thereof a generally U-shaped slot the outer end of which opens on one side of said cutter body, and the inner end of which defines on the cutter body a curved surface having a radius only slightly greater than the radius of said cylindrical pin, and
- a cutting bit secured to said one side of said cutter body adjacent said outer end of said U-shaped slot,
- said U-shaped slot being insertable via its open, outer end over said cylindrical pin removably to mount said cutter body on said tool shank for pivotal movement about said pin into and out of an operative position in which said cutting bit extends radially outwardly from said tool shank, and
- said cutter body having on the side thereof remote from the outer end of said U-shaped slot a flat limit surface lying in a plane extending transversely of a plane containing the centerline of said U-shaped slot, and disposed to have coplanar engagement with the bottom of said slot in said tool shank, when said cutter body is in its operative position.
In a back spotfacing tool having a tool shank, and a cutter mounting pin secured in said shank to extend parallel to the axis of said shank between opposite sides of a transverse slot formed in said shank adjacent one end thereof, a spotfacing cutter, comprising
- a cutter body having a cutting bit secured to one side thereof,
- said body having in one end thereof a generally U-shaped slot having an outer end opening on said one side of said body adjacent said cutting bit, and having a rounded inner end removably disposed in coaxial engagement with said mounting pin,
- said cutter body being pivotal manually about said pin to an operative position in which said cutting bit extends radially outwardly from said shank, and said outer, open end of said U-shaped slot faces away from the bottom of the slot in said shank, and
- said cutter body having thereon at the side thereof remote from said open end of said U-shaped slot a flat surface which engages the bottom of said slot in said shaft, when said cutter body is in its operative position, thereby operatively to prevent said inner end of said U-shaped slot from becoming disengaged from said pin.
Dependencies are inferred from the claim text.