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Title:
THROW WAY TIP AND HOLDER THEREOF
Document Type and Number:
Japanese Patent JPS61226202
Kind Code:
A
Abstract:

PURPOSE: To stabilize the discharge of cutting chips by forming broad and deep breaker grooves along cutting edges of a throw away tip for internal cutting, making the cutting edges lower than the surface other than the grooves, and fitting the tip to a holder with the cutting edge being at a proper angle.

CONSTITUTION: At the ends of both sides of a tip 1 are cutting edges 2 and breaker grooves 3 formed connectively. And the nose sections 2a form curvatures to the extent of 1W4R. Each height of te nose sections 2a is to be lower than an upper plane 4. And the cutting edges 2 are to be lowered with an inclination of 2W15° in proportion to the distance from the nose sections 2a. And besides, the breaker grooves 3 are also to be broader and deeper to the extent of an inclination of 2W15° in proportion to the distance from the nose section 2a. A holder (h) to which the tip is attached with the cutting edge 2 being at 10W50° to the center axis of the holder (h) is best. By this, cuttig chips can be stably discharged in a cutting direction.


Inventors:
HIDAKA TADASHI
Application Number:
JP6436385A
Publication Date:
October 08, 1986
Filing Date:
March 27, 1985
Export Citation:
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Assignee:
KYOCERA CORP
International Classes:
B23B27/14; B23B27/00; B23B27/16; (IPC1-7): B23B27/14
Domestic Patent References:
JP46032309U
JP58173422B
JP51077681B
JPS5871008A1983-04-27