CHAMFERING DEVICE FOR PIPE

Japanese Patent JP2019005840

A

To provide a chamfering device for a pipe which can machine an entire circumference uniformly by preventing deformation and deviation of machining position of a pipe in simultaneously carrying out flattening processing of an opening end surface of the pipe and chamfering processing of an inner circumference and an outer circumference of an opening end part, prevents deviation of a chamfered amount of each pipe, and exhibits excellent machining stability, reliability of dimensional control.SOLUTION: A chamfering device includes a base 14, a pipe mounting part 15 which positions and fixes a pipe 11 on the base 14, and a feeding mechanism 17 which holds a pipe machining part 13 on the base 14 so as to freely advance and retract with respect to an opening end surface 12 of the pipe 11. The pipe machining part 13 includes a rotation shaft 30, a flattening blade 31 and a chamfering blade 32 mounted on a tip end side outer circumference part of the rotation shaft 30 with a phase difference of 180 degrees, a guide part 35 which protrudes from a tip end of the rotation shaft 30 forward than the flattening blade 31 and the chamfering blade 32 and has an abutment surface 36 which contacts with a back side of an inner circumferential surface of the chamfering position, and a rotation drive part 37 which rotates the rotation shaft 30.SELECTED DRAWING: Figure 1

WO/1986/003148	ANGULARLY ADJUSTABLE MANDREL ASSEMBLY
JP2001322002	BEVELING CHAMFERING DEVICE

YAMAMOTO TSUKANE
SHIGEMATSU YOSHIHIRO
MORITA HIROSHI
MINAMI KIYOMI

JP2017123025A

January 17, 2019

June 23, 2017

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TAC GIKEN KOGYO KK
YACHIYO ENG KK
TACK SYSTEM CO LTD

B23B5/16; B23B5/00

Fujio Nakamae
Yohei Kiyoi
Yoshihiro Kurita

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