我厂于1977年购置德国ZFWZ/Ⅱ型液齿机,　经安装、调试正式投人生产运转月余,其驱动回转工 作台的蜗轮先后发生两次研伤。经解体检修,发现该 机设计上存在先天不足,而致造成蜗轮齿面研伤。为 此,我们决定研制使用蜗轮副过浮动报警、停机装置, 来保证蜗轮副在工作中始终处于最佳 I plant in Germany in 1977 the purchase of ZFWZ / Ⅱ type hydraulic gear machine, the installation, commissioning formally put into production and operation more than a month, the worm drive its rotary table has occurred two times wounds. After the disintegration of maintenance and found that there is a congenitally deficient aircraft design, which caused the worm tooth surface injury. To this end, we decided to develop the use of worm over float alarm, stop device, to ensure that worm gear at work is always in the best