为了实现主轴的间歇运动,一般采用棘轮机构。但是,棘轮机构零件多,运转噪音大、磨损较快,不适宜高速运转。为此,我们革新制造了一种步进机构,在工业缝纫机上使用,效果很好,大大提高了生产效率和产品质量。这种机构由一对蜗轮副组成,所不同的是蜗杆从纵向划分为两半(附图),一半为正常两线蜗杆,另一半则加工成与轴线垂直的齿形。这样,在蜗杆旋转过程中,转前半转时,前进一个导程,带动蜗轮转动一个 In order to achieve the spindle intermittent movement, the general use of ratchet mechanism. However, many ratchet mechanism parts, running noise, wear faster, not suitable for high-speed operation. To this end, we have created a revolutionary innovation step machine, used in industrial sewing machines, the effect is very good, greatly improving the production efficiency and product quality. The mechanism consists of a pair of worm gears, the difference being that the worm is divided longitudinally into two halves (photo), one half of which is a normal two-wire worm and the other half of which is machined into a tooth profile perpendicular to the axis. In this way, during the rotation of the worm, turn the front half-turn forward a lead, the worm wheel drive a