用于摩擦搅拌点焊，实现小型化并便于操作。
专利摘要
提供一种摩擦搅拌点接合装置，通过使产生压力的滚珠丝杠的轴线和搅拌马达的轴中心重合，消除由压力引起的倾覆力矩的产生，从而使装置能够小型化并且装置能够容易地进行接合操作。该摩擦搅拌点接合装置包括固定在搅拌马达后端侧的滚珠螺母，在搅拌马达的输出轴中限定一个孔，滚珠丝杠从孔的后部容纳在孔中以便定位在孔中，其中压力马达的旋转力传递到滚珠丝杠，并且搅拌马达通过与滚珠丝杠螺纹接合的滚珠螺母前后移动。
Original abstractThere is provided a friction stir spot joining device to eliminate the generation of tipping torque caused by a pressing force by allowing the axis of a ball screw for generating the pressing force and the center of a shaft of a stirring motor to be coincident with each other, thereby allowing the device to be downsized and the device to effect joining operation with ease. The friction stir spot joining device comprises a ball nut fixed to the rear end side the stirring motor, a hole is defined in an output shaft of the stirring motor in which the ball screw is housed from a rear portion of the hole so as to be positioned in the hole, wherein a rotating force of the pressing motor is transmitted to the ball screw and the stirring motor is moved forward and backward by the ball nut threaded with the ball screw.
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