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公开(公告)号：US20230211434A1
公开(公告)日：2023-07-06
申请号：US17928461
申请日：2021-05-27
IPC分类号： B23K20/12
CPC分类号： B23K20/125 , B23K20/124 , B23K20/126
摘要： A friction stir spot welding apparatus includes a pin member formed in a solid cylindrical shape, a shoulder member formed in a hollow cylindrical shape, the pin member being inserted in the shoulder member, a rotary actuator that rotates the pin member and the shoulder member on an axis that is in agreement with an axial center of the pin member, and a linear actuator that linearly moves each of the pin member and the shoulder member along the axis. A tip-end part of the shoulder member is formed in a tapered shape.
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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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公开(公告)号：US20190143442A1
公开(公告)日：2019-05-16
申请号：US16097496
申请日：2017-04-27
摘要： A spot welding apparatus which performs spot welding of a plurality of plate materials which are lapped to each other, comprises a displacement driving unit which displaces lapped portions of the plurality of plate materials and a tool relatively to each other; a rotation driving unit which rotates the tool; and a controller which controls the displacement driving unit and the rotation driving unit so that the tool is plunged into the lapped portions in a state in which the tool is rotated to perform friction stir spot welding. The controller controls the displacement driving unit so that at least one friction stir spot weld is formed in a region of the lapped portions which is between a plurality of resistance spot welds formed by resistance spot welding.
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