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    • 1. 发明授权
    • Pulse arc welding machine
    • 脉冲弧焊机
    • US4594498A
    • 1986-06-10
    • US534540
    • 1983-09-22
    • Shigeo UeguriYouichiro TabataHirotsugu KomuraToshio Ito
    • Shigeo UeguriYouichiro TabataHirotsugu KomuraToshio Ito
    • B23K9/09
    • B23K9/091
    • A pulse arc welding machine in which the welding operations and welding current are controlled such that the molten portion of a wire electrode is not significantly splattered and the welding arc length and welding bead are uniform. The welding machine of the invention includes a wire electrode, a welding torch confronting a base material while being spaced therefrom, a shielding gas supplying unit for supplying a shielding gas to the welding area on the base material, and a wire feeding unit for feeding the wire electrode to the welding torch. A base current source supplies a base current between the wire electrode and base material with a pulse current from a pulse current source being imposed thereon. A pulse frequency varying circuit varies a number of pulses per unit time for the pulse current so that the number of pulses is proportional to the speed at which the wire electrode is fed thereby to set the average arc current.
    • 一种脉冲电弧焊接机,其中控制焊接操作和焊接电流,使得线电极的熔融部分不会显着飞溅,并且焊接电弧长度和焊接珠均匀。 本发明的焊接机包括线电极,与基材隔开的面对基材的焊炬,用于向基材上的焊接区域供给保护气体的保护气体供给单元,以及供给单元 线电极到焊枪。 基极电流源在线电极和基底材料之间提供来自施加在其上的脉冲电流源的脉冲电流的基极电流。 脉冲频率变化电路改变脉冲电流的每单位时间的脉冲数,使得脉冲数与供给线电极的速度成比例,从而设定平均电弧电流。
    • 8. 发明授权
    • Indexing device
    • 索引设备
    • US5481944A
    • 1996-01-09
    • US217250
    • 1994-03-24
    • Tetsuya OketaniToshio Ito
    • Tetsuya OketaniToshio Ito
    • B23Q16/02B23Q16/06F16H1/16F16H35/00F16H57/037F16H57/038F16H57/039
    • B23Q16/065B23Q2230/002Y10T74/1418Y10T74/1488
    • An indexing device comprises an indexing table fixed to a table shaft rotatably supported on a body structure. A worm shaft is rotatably supported on the body structure and has a worm formed thereon. An indexing gear is fixed coaxially to the indexing table. The indexing device has a rotation correction device for stopping the rotation of the worm shaft prior to the indexing operation of the indexing table. The indexing device further has a positioning device for operating, after the worm shaft has been thus stopped, to impart a rotational torque to the indexing table and to cause a gear tooth face of the indexing gear to press against and hold a worm tooth face of the worm, whereby the precision of positioning of the indexing table is improved.
    • 分度装置包括固定到可旋转地支撑在主体结构上的工作台轴的分度台。 蜗杆轴可旋转地支撑在主体结构上并形成有蜗杆。 分度齿轮与分度台同轴固定。 分度装置具有旋转校正装置,用于在分度台的分度操作之前停止蜗杆轴的旋转。 分度装置还具有定位装置,其在蜗杆轴已经停止之后进行操作,以将旋转扭矩赋予分度台,并使分度齿轮的齿轮齿面压紧并保持蜗杆齿面 蜗杆,从而提高了分度台的定位精度。