卷筒是拉丝机上最关键的零件,而其工作面又是卷筒最关键的部位(见图一),所以拉丝机是否好用,很大程度上决定于卷筒工作而的好坏。目前人们对卷筒工作面的径向跳动、光洁度及表面硬度都有了明确的认识,但对其锥度的大小及R圆弧的大小注意不够。对于不同的拉丝机卷筒其锥度和R圆弧多大较为合适,而影响锥度和R大小的因素又是哪些,我们对国内外生产的部分拉丝机进行了调查了 The reel is the most critical part of the wire drawing machine, and its work surface is the most critical part of the reel (see Figure 1), so drawing machine is easy to use, largely determined by the quality of the reel work. At present, people have a clear understanding of the radial runout, smoothness and surface hardness of the roll face, but not enough attention to the size of the taper and the size of the R circle. For different wire drawing machine drum taper and R arc more appropriate size, and the impact of taper and R size of the factors which are, we have domestic and foreign parts of the wire drawing machine were investigated