车床上的溜板箱是将光杠或丝杠的转动力矩传递给床鞍及刀架的重要部件。而溜板箱内落下蜗杆装置是保证自动走刀正常进行和起着安全保险作用的装置。当溜板箱与挡铁相撞,或者切削阻力过大时,落下蜗杆装置会立即使溜板箱自动停止前进。由于频繁地自动走刀,落下蜗杆装置落下、抬起, The slide box on the lathe is an important part that transmits the turning moment of the light bar or screw to the saddle and the knife holder. The drop box worm device is to ensure the normal automatic walking and plays a safety and security devices. When the skid box collides with the stopper or the cutting resistance is too large, dropping the worm gear automatically stops the skipping box immediately. As the frequent automatic knife, falling worm device falls, lifted,