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US 4,292,866 AGranted
Toolholder with expansible shank
AssigneeKennametal Inc.
InventorThomas E. Kaczynski
Life of this patent
Estimating the term…
Abstract
A toolholder is disclosed having a tool body with an insert seat thereon and an expansible shank capable of being received in the bore of a tool support member. The expansible shank is capable of being rapidly and securely locked into the bore of the tool support member by reciprocally movable means mounted in the tool body for expanding and contracting said shank.
Claims11
A toolholder comprising:
- a tool body having an insert seat thereon and having an abutment surface thereon for abutting a tool support member and with means thereon to keep said tool body nonrotational with respect to the tool support member;
- expansible shank connected to said tool body and said expansible shank receivable in a bore of a tool support member;
- reciprocally movable means comprising a convex abutment surface for expanding said expansible shank so as to lock said shank in the bore of the tool support member.
The method of retaining a toolholder in a tool support member which comprises the steps of:
- providing slots in the shank of a toolholder so that the outer peripheral surface of the toolholder shank is expansible;
- providing convex abutment means for expanding the toolholder shank;
- inserting the toolholder shank in a bore in a tool support member until said toolholder abuts said tool support member;
- expanding the outer peripheral surface of the toolholder shank so that it contacts the inner wall of the bore of the tool support member providing enough friction force between the toolholder shank peripheral surface and the inner wall of the bore so as to hold the toolholder rigidly in the tool support member during machining operations.
1 more element
Dependencies are inferred from the claim text.