工业用缝纫机可缝制一般服装、绒毯、皮革乃至草垫,用途很广。 缝纫机的动力源一般都采用根据电压变化无级变速的电动机。但工业用缝纫机因缝纫制品厚之故,在缝纫时往往出现转矩不足的现象。 本例就是在缝纫机的动力源上装有机械式无级变速机。其速度控制是用变速操纵杆代替脚踏式可变电阻器直接进行,可成为最敏感地 Industrial sewing machines can be sewing general clothing, blankets, leather and straw mat, a wide range of uses. Sewing machine power sources are generally based on the voltage change continuously variable speed motor. However, industrial sewing machines because of sewing products so thick, often appear in the sewing torque shortage phenomenon. This example is in the sewing machine power source equipped with a mechanical continuously variable transmission. Its speed control is replaced by a variable-speed paddle with a variable speed control lever, making it the most responsive