论文部分内容阅读
目前,绝大多数螺旋挤泥机的螺旋绞刀都采用钢材制作,组合焊接而成:由于螺旋绞刀的叶片是一个螺旋面,理论上属于一种不可展开的曲面.只能作近似的展开.这就给下料和制作带来了困难.一般来说螺距越大.内径越小.内、外径相差也越大.例如450型螺旋挤泥机的螺旋绞刀叶片的外径是450mm.内径(即轴套简的外径)是150mm.螺距是280mm.在制作绞刀叶片时.如果把钢板下成外径450mm.内径150mm的圆盘.一旦拉成螺旋.可以发
At present, most of the spiral reamers of spiral squeezing machines are made of steel and welded together: Since the blades of spiral reamers are spiral surfaces, they theoretically belong to a kind of non-deformable curved surfaces and can only be approximated. This brings difficulties to blanking and making. In general, the larger the pitch, the smaller the inner diameter, the greater the difference in inner and outer diameters. For example, the outer diameter of the spiral reamer blades of the 450 screw extruder is 450 mm. The inside diameter (ie the outside diameter of the shaft sleeve) is 150mm. The pitch is 280mm. When making the reamer blade, if the steel plate is made into a disk with an outside diameter of 450mm and an inside diameter of 150mm, it can be made into a spiral.