Honda Motor Co., Ltd.

F-tech Inc.

Honda Giken Kogyo Kabushiki Kaisha

Fanuc Corporation

Nachi - Fujikoshi Corporation

Saga Tekkohsho Co., Ltd.

Mitsuru Sayama

Akiyoshi Miyawaki

Tsutomu Kobayashi

Tetsuya Miyahara

Keisuke Tsuta

Taichi Kurihara

Shosuke Ohhama

Yukio Shoji

Yosuke Tokoro

Fumiaki Fukuchi

Hiroyasu Yamaguchi

Tadashi Nishiyama

Kimiharu Mizusaki

Katsuhiko Kohyama

Toshiki Kawamura

Hiroshi Ogasa

Ryouji Kitamura

Masami Kosuge

Daisuke Fukunaga

Mitsuo Sugiyama

Ichiro Fujimoto

Nagatsugu Mukaibo

Naohiro Noma

Tomoya Saitou

Morio Kuroki

Masato Sato

Shin Ihara

Kazuya Okada

Toshiyuki Yokoyama

Hiroyuki Nakai

Hiroyuki Matsufuji

Takuya Miyamoto

Katsumi Komori

Yasumasa Hyodo

Tomoya Takanashi

Kazuhiro Sekine

Nobuyuki Funahira

Ryo Kawahara

Naoki Osada

Mami Anzai

A welded structure includes a first workpiece (), a second workpiece (), a bonded part () formed between the first workpiece and the second workpiece by plastically displaced materials of the first workpiece and the second workpiece, and a hooking portion () having a base end embedded in the second workpiece, and a tip end extending into the first workpiece, the hooking portion extending radially outwardly and upward along an outer periphery of the bonded part. A device for forming such a structure includes a clamp ring () which is provided with a central recess () in a part of a contact surface () thereof located around a through hole ().

Welded structure and friction stir welding device

A friction stir welding device includes: a probe capable of pressing a welding target part of a workpiece while rotating; a shoulder externally surrounding an outside of the probe, on a plane intersecting a rotation axis of the probe; a shoulder attachment member provided with the shoulder; and a flow path formed at a contact part between the shoulder and the shoulder attachment member and adapted to allow a cooling medium to flow therethrough.

Friction stir welding device

Disclosed is a method for separating a first member () and a second member () joined to each other comprising the steps of placing a clamp ring () on the surface of the first member, plunging a rotating probe () having a screw thread on a peripheral surface thereof into the surface of the first member through a through hole () of the clamp ring until a tip end of the probe reaches beyond an interface between the first member and the second member, the screw thread being directed so as to lift material of the bonded part away from the second member as a lifted part. The two members can be rejoined to each other by collapsing the lifted part into a bonded part once again by using a rotating probe and a clamp ring.

Method for separating members that were previously joined

A bonding device for joining together a first member (), an intermediate member (), and a second member () which are layered as a laminated assembly includes a probe (), an anvil (), a shoulder member (), a drive mechanism () configured to rotate the probe around the central axial line and move the probe toward and away from the second member along the central axial line, and an electric power supply () electrically connected to the anvil and the shoulder member to conduct electric current through the laminated assembly via the anvil and the shoulder member.

Bonding device and bonding method for friction stir bonding and resistance welding

A friction stir welding apparatus includes a probe, a shoulder, a recess part, and an annular member. The probe is pressed to a joint part of a plurality of joined members while being rotated. The shoulder is formed so as to surround the probe at an outside in a radial direction with respect to a rotation axis of the probe. The recess part is formed on at least one of an outer circumference of the probe and an inner circumference of the shoulder. The annular member is fitted to the recess part.

Friction stir welding apparatus

The disclosure provides a friction stir welding tool which can inhibit chipping even if an adhesion matter having high hardness adheres to a tip thereof during friction stir welding of an iron-base alloy and an aluminum alloy. In the tool for friction stir welding made of high-speed tool steel that includes a minor diameter portion and a major diameter portion formed adjacently to the minor diameter portion, hardness of the tool decreases from the minor diameter portion toward the major diameter portion. The hardness of the minor diameter portion may be 65 HRC or more by Rockwell hardness C-scale, and the hardness of the major diameter portion may be 60 HRC or less by Rockwell hardness C-scale.

Friction stir welding tool

A friction stir welding tool includes a probe having a front end surface and an outer circumferential surface. Outer circumferential recesses are formed in the probe. The outer circumferential recesses extend along the rotational axis of the probe up to the front end surface. The friction stir welding tool rotates the probe about the rotation axis, and embeds the probe inside a workpiece during rotation of the probe to weld the workpiece. A front end recess is formed in the front end surface. The front end recess is positioned at the central part of the front end surface, and connected to the outer circumferential recesses.

A friction stir welding tool includes a probe having a front end surface and an outer circumferential surface. The probe has, formed therein, outer circumferential recesses extending to the front end surface along a rotation axis. The friction stir welding tool rotates the probe about the rotation axis and embeds the probe inside a workpiece during rotation of the probe to thereby weld the workpiece. The width of the outer circumferential recesses is increased toward a front end of the probe.

A friction stir welding tool includes a probe having a front end surface and an outer circumferential surface. The outer circumferential surface has, formed therein, outer circumferential recesses extending to the front end surface. The friction stir welding tool is configured to rotate the probe about a rotation axis, and embed the probe inside a workpiece during rotation of the probe to thereby weld the workpiece. A front end recess is formed in the front end surface, and the front end recess extends to the outer circumferential surface in a manner that the front end recess does not communicate with the outer circumferential recesses.

A metal composite and a metal joining method that are capable of suppressing an influence on joining strength of a friction stir welded section due to a tool hole formed when a tool is extracted, in the case in which two metals are joined through friction stir welding. In an overlapping section in an axial direction in which a first shaft and a second shaft overlap in the axial direction, an inscribed section in which the first shaft and the second shaft come in contact with each other and an non-inscribed section in which the first shaft and the second shaft do not come in contact with each other are formed. In the non-inscribed section, a plate thickness of the second shaft is decreased. Then, a starting point of a friction stir welded section is formed in the inscribed section, and an endpoint is formed in the non-inscribed section.

Metal composite and metal joining method

A dissimilar metal joining method includes moving a tool on a first metal along a first track on an overlapped part where the first metal is overlapped on a second metal while the tool is rotated around an axis of the tool and is pressed along the axis against the first metal such that the tool penetrates the first metal and is inserted into the second metal by a first insertion depth. The tool is moved from the first track to a second track which is on the overlapped part and which is substantially parallel to the first track after the tool has moved along an entirety of the first track. The tool is moved on the first metal along the second track on the overlapped part while the tool is rotated around the axis and is pressed against the first metal along the axis.

Metal joining method and metal-joined member

A transmission includes a first shaft and a second shaft. The first shaft is made of a first metal material. The first shaft has a hollow structure. The second shaft is made of a second metal material different from the first metal material. The second shaft is fitted into the hollow structure of the first shaft at an axial overlap section. The first shaft and the second shaft are coaxially connected at the axial overlap section with friction stir welding.

Transmission

The friction stir welding apparatus includes a pin () on which a soft nitrided layer () is formed. The soft nitrided layer () is formed of an iron lithium oxide layer () and a nitrided diffusion layer (). The atom of the iron lithium oxide layer () penetrates into a space between atoms at the surface of the pin () to form the nitrided diffusion layer ().

A friction stir welding member is formed by welding a second member to a first member in such a manner that a second member is stacked on a first member, a material property of the second member being different from a material property of the first member, a pin of a welding tool using a Friction Stir Welding technique is inserted into the second member, welding is started at one end of the second member, and the pin is pulled out at a welding terminal portion before the pin reaches the other end of the second member. A projection projecting toward the welding tool is provided integrally with the second member, the projection is formed so as to have a height that is higher than a length of the pin, and the projection is provided with the welding terminal portion.

Friction stir welding member

A replacement device of a processing apparatus includes a gripping device having a single first support member positionally fixed, a first gripping portion provided on the first support member to grip a holder not to rotate in a releasing direction when the processing member is removed from the holder, and a second gripping portion provided on the first support member apart from the first gripping portion to grip the holder not to rotate in a restricting direction when the processing member is attached to the holder, and a holding device having a single movable second support member, plural first holding portions provided on the second support member to respectively accommodate the processing member removed from the holder, and plural second holding portions provided on the second support member apart from the first holding portions to respectively accommodate the processing member that is to be attached to the holder.

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Wako, Japan

Mitsuru Sayama