Side locking insert and material removal tool with same
AssigneeValenite Inc.
InventorKenneth G. Noggle
Life of this patent
Estimating the term…
Abstract
An indexable insert has one or more recesses formed in a frontside or backside surface which receives a surface of the head of a locking screw. When mounted, the insert is forced against respective support surfaces of an insert pocket. The locking screw is threaded into a counterbored tap hole to engage the insert and provide side locating forces and clamping forces to secure the indexable insert in the insert pocket. More particularly, the indexable insert has a shaped surface recess that mates to a complimentarily-shaped surface on the head of a locking screw and secures the indexable insert in multiple dimensions to a seating surface. A material removal tool and a method of mounting the indexable insert are also disclosed.
Claims22
A material removal tool, comprising:
- a body with a plurality of insert pockets at a first axial end, each of the plurality of insert pockets including a wall supporting surface, a floor supporting surface and a threaded tap hole with a counterbore, the threaded tap hole having a centerline oriented at an angle to the floor supporting surface;
- an indexable insert including a front polygonal surface, a back polygonal surface and a plurality of side edge surfaces joining the front polygonal surface and the back polygonal surface, the intersections of the side edge surfaces and the polygonal surfaces defining line edges of the insert and intersections of sequential side edge surfaces defining corner edges of the insert, and including a receiver for a region of a head of a locking screw in the front polygonal surface, wherein the receiver includes a plurality of recesses, and wherein the indexable insert is seated in the insert pocket with the back polygonal surface contacting the floor supporting surface, with a first one of the plurality of side edge surfaces contacting the wall supporting surface, and with a second one of the plurality of side edge surfaces protruding radially past an outer peripheral surface of the body;
- and
- a locking screw for the threaded tap hole, the locking screw including a threaded portion, a concentric shoulder and an angular shoulder, the angular shoulder between the threaded portion and the concentric shoulder,
- wherein the locking screw inserted into the threaded tap hole engages a first region of the concentric shoulder and a first region of the angular shoulder against one of the plurality of recesses.
A method to mount an indexable insert on a material removal tool, the indexable insert including a body having a front polygonal surface, a back polygonal surface and a plurality of side edge surfaces joining the front polygonal surface and the back polygonal surface, the intersections of the side edge surfaces and the polygonal surfaces defining line edges of the insert and intersections of sequential side edge surfaces defining corner edges of the insert, and including a receiver in the front polygonal surface, wherein the receiver includes a plurality of recesses, the method comprising:
- placing the indexable insert on a seating surface of an insert pocket of the material removal tool;
- and
- threading a lock screw including an angular shoulder and a concentric shoulder into a tap hole to engage a region of a head of the locking screw with one of the plurality of recesses,
- wherein the region of the head of the locking screw is a first portion of an angular shoulder and a first portion of a concentric shoulder of the locking screw, and wherein engaging the first portion of the angular shoulder and the first portion of the concentric shoulder with the surface of the recess and engaging a second portion of the concentric shoulder with a surface of a counterbore of the tap hole provides side locking forces and provides clamping forces.
Dependencies are inferred from the claim text.