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公开(公告)号：US20210339337A1
公开(公告)日：2021-11-04
申请号：US17282634
申请日：2019-10-10
摘要： A friction stir joining device includes a tool, a rotary driver, a linear-movement driver, and a control device. The control device is adapted to (A) dispose so that a first member opposes to the tool, and the first member, a second member and a third member are located in this order, (B) control the linear-movement driver and the rotary driver so that a tip-end part of the tool presses a joined part of a to-be-joined object while the tool is rotated, (C) control the linear-movement driver and the rotary driver so that the third member softened extends above an upper surface of the second member, and the tip-end part of the tool reaches a first position, and (D) control the linear-movement driver and the rotary driver so that the tool is drawn out from the joined part while the tool is rotated.
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公开(公告)号：US20180354064A1
公开(公告)日：2018-12-13
申请号：US15778854
申请日：2016-11-15
IPC分类号： B23K20/12
CPC分类号： B23K20/1265 , B23K20/12 , B23K20/123 , B23K20/125 , B23K20/1255 , B23K20/126
摘要： A friction spot joining device configured to carry out friction spot joining of a pair of plates includes an advance-retreat drive configured to advance and retreat a tool to/from the plates a rotation drive configured to rotate the tool, and a controller configured to control the advance-retreat drive and the rotation drive. The controller executes a joining control in which the tool is caused to give pressure to the plates while the tool is rotated so that the tool is pushed into the plates, and a separating control in which the tool is separated from the plates when an integrated value (P=ID×ΔT) calculated using a current value (ID) of the rotation drive during the joining control and a driving period of time (ΔT) during the joining control is determined to be reached a target value.
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公开(公告)号：US20180304401A1
公开(公告)日：2018-10-25
申请号：US15770226
申请日：2016-10-14
IPC分类号： B23K20/12
CPC分类号： B23K20/1235 , B23K20/12 , B23K20/1255
摘要： A friction stir spot joining apparatus for spot-joining a pair of plate members by friction stirring with a tool's pin portion includes an advancing and retracting driving device configured to advance and retract the tool to and from plate members, a rotationally driving device configured to rotate the tool, and control device configured to control advancing and retracting driving device and rotationally driving device. The control device executes joining control of pushing pin portion into plate members while the tool is rotated and causing pin portion to pressurize plate members, and executes heat dissipation control of reducing at least one of a rotation speed and a tool's pressurization force more than in the joining control while tool is rotated and pin portion is kept pushed into plate members after joining control and separating tool from plate members after the pin portion's surface temperature becomes less than an oxidation onset temperature.
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公开(公告)号：US20240293889A1
公开(公告)日：2024-09-05
申请号：US18275763
申请日：2022-02-07
发明人： Masahiro MIYAKE , Takuya FUKUDA , Tadahiro EDAGAWA , Yoshitaka MURAMATSU , Norichika KITA , Makoto TSUJINAKA
IPC分类号： B23K20/12
CPC分类号： B23K20/123 , B23K20/125
摘要： A friction stir tool control method is a control method for controlling an operation of a friction stir tool by supplying a necessary drive electric current to a drive source of the tool. The control method includes obtaining a pressurizing force change ratio by comparing a set pressurizing force predefined as a pressurizing force at plunging of the tool into a workpiece with an actual pressurizing force occurring at actual plunging of the tool into the workpiece by supplying a drive electric current for generating the set pressurizing force to the drive source. The drive electric current is regulated in accordance with the pressurizing force change ratio so that the actual pressurizing force comes to the set pressurizing force, and the drive source is driven with the regulated drive electric current.
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公开(公告)号：US20240116129A1
公开(公告)日：2024-04-11
申请号：US18275700
申请日：2022-02-07
IPC分类号： B23K20/12
CPC分类号： B23K20/123 , B23K20/1245
摘要： In a state where a shoulder member is in contact with a contact surface, a pin member is brought into contact with the contact surface to specify a pin movement amount, which is a distance from an initial position of the pin member to the contact surface, and specify a shoulder displacement amount, which is a displacement amount when the shoulder member is retreated as a result of the contact of the pin member. When both a first condition that the pin movement amount is included in a first range and a second condition that the shoulder displacement amount is included in a second range are satisfied, the pin member is retreated from the contact surface by a predetermined return amount, and furthermore, origin point alignment of the pin member and the shoulder member is performed on the basis of positions of the pin member and the shoulder member.
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公开(公告)号：US20220362889A1
公开(公告)日：2022-11-17
申请号：US17623883
申请日：2020-06-18
IPC分类号： B23K28/02 , B23K37/02 , B23K11/18 , B23K20/12 , B23K20/233
摘要： A joining system (100) of the present invention is for joining a joining target (W) including first, second, and third members (W1), (W2), (W3), and includes a welder (101), a friction stir welding machine (102), and a controller (110) that: (A) causes the welder (101) to weld the second and third members (W2), (W3); (B), after (A), causes the joining target (W) to be placed at the friction stir welding machine (102) so that the first member (W1) is opposed to a distal end of a tool (10); and (C), after (B), controls a linear motion driver (7) and a rotation driver (8) so as to, while pressing the distal end of the tool (10) to the joining target (W), rotate the tool (10) around an axis, so that the softened second and third members (W2), (W3) intrude into the softened first member (W1), thus joining the joining target (W).
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公开(公告)号：US20180297145A1
公开(公告)日：2018-10-18
申请号：US15770221
申请日：2016-10-14
IPC分类号： B23K20/12
摘要： A friction stir spot joining apparatus includes a tool configured to be brought into contact with or separated from a surface of a second plate member on the opposite side to a first plate member of the first and second plate members that are overlaid on each other, a driving unit configured to rotationally drive the tool around its axis, a position adjusting unit configured to adjust a relative position between the tool and the second plate member, a control unit configured to control the driving unit and the position adjusting unit, and a breakage detection unit configured to detect breakage of the tool by controlling the control unit to dispose the tool at a contact position with the second plate member or a predetermined pushed position at one joining position.
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8.发明公开公开(公告)号：US20240351133A1
公开(公告)日：2024-10-24
申请号：US18683510
申请日：2022-07-21
发明人： Daiki YAMAGISHI , Katsutoshi TAKASHIMA , Hiroshi MATSUDA , Ryoji OHASHI , Yoshitaka MURAMATSU , Takuya FUKUDA
IPC分类号： B23K20/12 , B23K101/18 , B23K101/34 , B23K103/04
CPC分类号： B23K20/12 , B23K2101/18 , B23K2101/34 , B23K2103/04
摘要： Provided is a friction stir spot welded joint having high joint strength even in the case where a high strength steel sheet, particularly a steel sheet with a tensile strength (TS) of 980 MPa or more, is used as a material to be welded. An annular groove is formed on an upper surface of an upper sheet out of overlapping steel sheets, and a shape, microstructure, and hardness of a welded portion are appropriately controlled simultaneously.
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公开(公告)号：US20220105589A1
公开(公告)日：2022-04-07
申请号：US17429166
申请日：2020-02-05
IPC分类号： B23K20/12 , B23K20/227
摘要： A dissimilar metal welding method includes a preparing step and a working step. In the preparing step, a pin member is moved to a second metal material while being rotated, and a tool body is driven such that the tool body is moved in a direction away from the second metal material while being rotated. In the working step, a through-hole is formed in the second metal material by the pin member, and then a distal end of the pin member is dug into the first metal material to a predetermined depth position in the first metal material.
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公开(公告)号：US20190262934A1
公开(公告)日：2019-08-29
申请号：US16344762
申请日：2017-10-31
IPC分类号： B23K20/12
摘要： During friction stir spot welding, a controller executes a temperature holding control in which the controller controls a rotation driving unit so that a rotational speed of a tool is set to a value which is equal to or lower than a predetermined rotational speed at which a temperature of the tool is regarded as being equal to a welding temperature of lapped portions, and in which the controller controls a displacement driving unit to increase and reduce a welding pressure or plunge depth of the tool so that the temperature of the tool is held in a predetermined set range.
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