KR930004002A - Variable length structure of cutting tool - Google Patents

Abstract

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Description

Variable length structure of cutting tool

Since this is an open matter, no full text was included.

1 is an exploded state diagram for the cutting tool of the present invention,

2 is a partial cross-sectional view of the cooking state of the cutting tool of the present invention;

Figure 3 (a) (b) is a perspective view and a cross-sectional view of the key of the present invention.

Claims (3)

In forming an ordinary cutting tool which is equipped at the leading end of the cutting edge and the rear end is driven by the chuck of the machine tool device, the cutting tool 1 is divided into the shank portion 2 and the head portion 3 respectively. And the head portion has a connecting table (5) formed integrally with a predetermined length of the insertion hole 21 and the insertion shaft 31 and the insertion shaft 51 and the insertion hole 52 which are formed so that they fit together The key 5 inserted into the key holes 22 and 54 and the key grooves 32 and 53 in which the insertion holes 21 and 52 are formed at the same positions of the insertion shafts 31 and 51 ( 6) Axle length variable structure of the cutting tool, characterized in that consisting of. The key holes 22 and 54 and the key grooves 32 and 53 are formed at intervals of 120 degrees between the circumferential surfaces of the insertion holes 21 and 52 and the insertion shafts 31 and 51. A variable axial length structure of the cutting tool, characterized in that. The cutting tool shaft according to claim 1, wherein the keys 5, 6 and 22, 54 comprise cylindrical surfaces 23, 55 and cylindrical inclined surfaces 24, 56. Variable length structure. ※ Note: The disclosure is based on the initial application.