我厂生产的上海-50型拖拉机转向器防尘罩老工艺是落料后经过二次拉伸成形,再由车床将端面车平。由于要求工件表面无擦伤,拉毛的痕迹,故在车削时需用专门的夹具,每车一件需要二分钟,生产率低,多年来一直没有解决。最近在上海灯具模具厂的大力帮助下设计制造了一付螺旋导向浮动式横切模(见图)。经试用证明生产效率提高近10倍,产品质量也较稳定。一、工艺特点螺旋导向浮动式横切模是在导板导向浮动式横切模的基础上根据所切圆形工件的特点而设计制造的。其工作特点是导向块5压着凹模 I plant the production of Shanghai -50 tractor steering dust cover old technology is the second stretch after blanking forming, and then by the lathe end car flat. Due to the requirements of the workpiece surface without scratches, brushed traces, so the need to use specialized turning fixture, each car requires two minutes, low productivity, over the years has not been resolved. Recently, a pair of helically guided floating cross-section molds have been designed and manufactured with the help of the lamp factory in Shanghai (see photo). The trial proved that the production efficiency increased nearly 10 times, product quality is more stable. First, the process features Spiral-oriented floating cross-die is oriented guide in the direction of the floating cross-cutting die based on the characteristics of the workpiece designed and manufactured. Its work is characterized by the guide block 5 pressed die