Shell cutter depth stop
A shell cutter tool can include an arbor; a cutter including a first end secured to the arbor; a second end defining a cutting element; and a wall extending from the first end to the second end and defining an inner surface and an outer surface, the outer surface defining an outer diameter of the cutter; and a depth stop secured to the cutter, the depth stop defining a stop surface and an outer diameter, the outer diameter of the depth stop being greater than the outer diameter of the cutter.
1 . A shell cutter tool for cutting an opening in a workpiece, the tool comprising:
an arbor;
a cutter comprising:
a first end secured to the arbor;
a second end defining a cutting element; and
a wall extending from the first end to the second end and defining an inner surface and an outer surface, the outer surface defining an outer diameter of the cutter; and
a depth stop comprising a stop ring defining an annular shape defining an inner surface defining threads, the threads engaged with threads defined in the outer surface of the wall of the cutter, the depth stop being axially translatable relative to the cutter to adjust a cut depth of the tool, the depth stop defining a stop surface and an outer diameter, the outer diameter of the depth stop being greater than the outer diameter of the cutter, the stop surface configured to contact the workpiece;
wherein:
a radially inner side of the stop ring defines a first axial thickness;
a radially outer side of the stop ring defines a second axial thickness; and
the first axial thickness is less than the second axial thickness.
2 . The tool of claim 1 , wherein the workpiece is a pipe.
3 . The tool of claim 2 , wherein the stop ring is a first stop ring, the depth stop further comprising a second stop ring defining an annular shape defining an inner surface defining threads, the threads of the second stop ring engaged with the threads defined in the outer surface of the wall of the cutter, the second stop ring configured to tighten against the first stop ring and fix a position of each of the first stop ring and the second stop ring with respect to the cutter.
4 . The tool of claim 3 , wherein the second axial thickness of the first stop ring is different than an axial thickness of the second stop ring.
5 . The tool of claim 1 , wherein the arbor defines a first end configured to receive a drive element and a second end configured to receive a pilot bit.
6 . The tool of claim 1 , wherein:
the wall defines a first end adjacent to the first end of the cutter and a second end adjacent the cutting element; and
the threads of the cutter extend from the first end of the wall toward the second end of the wall.