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US 6,960,049 B2Granted
Insert, holder and cutting tool
AssigneeNgk Spark Plug Co., Ltd.
InventorTakashi Inayama
Life of this patent
Estimating the term…
Abstract
A cutting tool has an insert shaped as a parallelogram that is detachably mounted by a clamp screw 4 on a tip mounting face of a holder. Concave grooves are formed like parallel stripes on the tip mounting face of the holder, and convex lines are formed on the abdominal face of the insert to be fitted in the concave grooves, so that the insert is clamped by the clamp screw to the holder in a state where the convex lines are fitted in the concave grooves on the tip mounting face.
Claims13
An insert comprising:
- a clamping member;
- and
- a parallelogram shaped body that is detachably mounted by said clamping member on a tip mounting face of a holder, wherein
- two or more concave grooves are formed like parallel stripes on said tip mounting face of said holder;
- two or more convex lines are formed on an abdominal face of said parallelogram shaped body to be fitted in said concave grooves of said holder;
- said parallelogram shaped body is clamped by said clamping member to said holder so that the convex lines are fitted in the concave grooves on said tip mounting face;
- said clamping member fixes said parallelogram shaped body to said holder by tightening a clamp screw through a screw insertion hole of said parallelogram shaped body into a female thread hole on said tip mounting face;
- and
- a flat convex line missing part is provided in a region of said parallelogram shaped body which includes a periphery of an opening edge of said screw insertion hole and is opposed to said tip mounting face of said holder when said parallelogram shaped body is fixed to said holder, and wherein said tip mounting face and said flat convex line missing part are out of contact at least before tightening said clamp screw, and
- wherein said flat convex line missing part is flush with a base of said convex lines.
7 more elements
A holder comprising:
- a clamping member;
- and
- a tip mounting face,
- said holder is capable of holding an insert that is detachably mounted by said clamping member on said tip mounting face thereof, wherein
- two or more concave grooves are formed as parallel stripes on an abdominal face of said insert;
- two or more convex lines are formed on said tip mounting face of said holder to be fitted in said concave grooves of said insert, wherein said insert is clamped by said clamping member in a state where said concave grooves of said insert are fitted in said convex lines on said tip mounting face of said holder;
- said clamping member fixes said insert to said holder by tightening a clamp screw through a screw insertion hole of said insert into a female thread hole on said tip mounting face of said holder;
- and
- a flat convex line missing part is provided in a region that includes a periphery of an opening edge of said female thread hole and opposed to said insert, wherein said insert and said convex line missing part are out of contact at least before tightening the clamp screw,
- wherein said insert has a cutting edge, and
- wherein said flat convex line missing part is flush with a base of said convex lines.
8 more elements
Dependencies are inferred from the claim text.