Yamazaki Mazak Corporation

Eiji Matsubara

Seigo Ouchi

Toru Murakami

Kazuki Uemura

Naokazu Okabe

Masayasu Hachiya

Shoya Kai

Masayasu Minatani

A stir pin includes a base end portion configured to be held rotatably about a first axis, a stirring portion provided to project from a shoulder member to be rotatable about the first axis together with the base end portion, and an intermediate portion including a second portion connected to the stirring portion to be rotatable about the first axis together with the stirring portion and having a second diameter passing through the first axis, and a first portion provided between and connected to the base end portion and the second portion to be rotatable about the first axis together with the base end portion and the second portion. The first portion has an end surface to which the second portion is connected and which has a maximum diameter larger than the second diameter. The end surface has a ring-shaped receiving surface configured to receive a material waste.

Stir pin, friction stir welding tool, and machine tool

A machining tool includes a light irradiator, a cover, and a light blocking filter. The light irradiator is to irradiate a workpiece to process the workpiece. The cover covers the light irradiator and the workpiece in the cover. The light blocking filter is configured to change light transmissivity of the light blocking filter in accordance with light from an inside of the cover, which the light blocking filter receives.

Composite processing machine, machining tool, and composite processing method

A friction stir welding tool includes a housing and a stir pin. The housing includes a first surface, a housing hole formed in the housing and having a housing hole opening on the first surface, and a discharge hole through which the housing hole is in communication with an outside of the housing. The stir pin includes a pin holder and a pin body. The pin holder has a first end portion and a second end portion. The first end portion is configured to be connected to a rotation spindle. The pin body is provided in the housing hole, is detachably attached to the second end portion, and is rotatable together with the pin holder around the rotation axis. The pin body includes a stir portion that protrudes from the first surface via the housing hole opening.

Friction stir welding tool and friction stir welder

Growing community of inventors

Niwa-gun, Japan

Eiji Matsubara