Cutting tool holder and cutting tool

Patent metadata

Field	Value
Publication number	US-2016236281-A1
Application number	US-201415027954-A
Country	US
Kind code	A1
Filing date	Sep 5, 2014
Priority date	Oct 18, 2013
Publication date	Aug 18, 2016
Grant date	—

Abstract

A recess surface portion 123 is formed in a predetermined range L 1 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 120 b 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.

First claim

What is claimed is:

1 . 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.

2 . A cutting tool holder according to claim 1 , wherein the ejection port is opened such that, when the cutting tip is fixed to the tip seat, the ejection port is located at a position lower than a rake face of the cutting tip and the coolant is ejected obliquely upward.

3 . A cutting tool holder according to claim 1 , wherein a plurality of the ejection ports are provided in an up-down direction.

4 . A cutting tool comprising:
the cutting tool holder according to claim 1 ; and the cutting tip fixed to the tip seat of the cutting tool holder, wherein, when seen from a rake face side, the cutting tip does not project from a virtual straight line that is drawn along the lateral flank of the rear portion in the cutting tool holder.

Assignees

• Ngk Spark Plug Co

Inventors

• Kitagawa Shusuke

Classifications

• B23C5/28

  Features relating to lubricating or cooling · CPC title

• Y10T407/14

  with means to apply fluid to cutting tool · CPC title

• B23Q11/10

  Arrangements for cooling or lubricating tools or work · CPC title

• B23B29/043

  with cutting-off, grooving or profile cutting tools, i.e. blade- or disc-like main cutting parts (B23B29/14 takes precedence) · CPC title

• B23B27/10 Primary

  Cutting tools with special provision for cooling {(drills with lubricating or cooling equipment B23B51/06; features relating to lubricating or cooling of milling cutters B23C5/28; arrangements or devices for cooling or lubricating tools or work B23Q11/10)} · CPC title