Cutting tool holder and cutting tool
AssigneeNgk Spark Plug Co., Ltd.
InventorShusuke KITAGAWA
Life of this patent
Estimating the term…
Abstract
A recess surface portion 123 is formed in a predetermined range L1 from a front end 103 toward a rear end, of a lateral flank 120 of a front end portion 102 of a holder 100, so as to be recessed relative to a lateral flank 120b of a rear portion 122, a circular arc surface portion (frontward-facing surface) 125 formed in a circular arc shape as seen from a rake face 105 side is provided on the rear of the recess surface portion 123, and an ejection port 150 is opened in the frontward-facing surface. Accordingly, supply of the coolant at the lateral flank side is ensured, and cutting can be performed at a position closer to a chuck Ck due to no protruding portion being present at the lateral flank side of the holder as in the conventional art.
Claims4
A cutting tool holder comprising:
- a tip seat, provided in a front end portion of the cutting tool holder, for fixing a cutting tip thereto;
- and
- an ejection port opened such that a coolant can be supplied from a lateral flank side of the cutting tip toward a cutting edge of the cutting tip fixed to the tip seat, the ejection port being provided at a lateral flank side of the cutting tool holder, wherein
- a recess surface portion is formed in a predetermined range from a front end toward a rear end, of the lateral flank of the front end portion of the cutting tool holder, so as to be recessed relative to a lateral flank of a rear portion rearward of the predetermined range, and
- the ejection port is provided in a frontward-facing surface in the recess surface portion.
Dependencies are inferred from the claim text.