转毂钢球式钢筋矫直切断机的设计研究

针对钢筋矫直功率消耗大的缺点,提出了一种新型的模块矫直原理--转毂钢球式模块矫直.即在模块体内镶嵌3个可以任意方向转动的钢球,变传统矫直中钢筋与模体之间的滑动摩擦为钢筋与钢球间的滚动摩擦.其优点为:送、拉料和矫直功率大大下降,矫直质量明显提高,尤其是矫直带肋钢筋,无肉眼可见划痕,矫直后的钢筋不直度每米小于1 mm,且产品质量稳定.对矫直力能参数进行了分析计算,可为设计矫直机提供参考.

Design of Rebar Straightening and Cutting Machine With Rotating Hub and Steel Balls

To reduce the rebar straightening power on conventional straightening machine, a new mould straightening principle with rotating-hub is proposed. According to this principle, three steel balls which rotate in any direction are mounted in a mould to transform sliding friction between rebar and balls into rolling friction. In this way, the force pushing rolls and straightening power are decreased greatly, and quality of straightened rebar can be obviously improved. The tolerance in straightness can be less than 1 mm per meter. The force and performance of this straightening machine are analyzed and calculated for designing.