精轧钢筋孔型轧辊的铣削和使用

摘要

Chengde Iron and Steel Co.,Ltd.started to study the finishing rebar rolling of PSB830 since 2009.Its char-acteristic is using connector with inner thread or screw connection with a screw nut for fixing in bar of arbitrary cross sec-tion,so it is very important to research the shape of finishing rebar,which is difficulty in roll rib groove milling.Through engineer and technologist practice and exploring,according to the requirements of the rolling thread dimensions,we deter-mine the shape of the tool in size and angle.With tool trajectory calculation,we accurately calculate the tool of gyration ra-dius,Z axis starting position and cutter length,give the correct value of speed,and let roll rib groove milling be successfully completed.This process has changed the traditional method of cutting the rib groove,shorten the adjustment time,in-creased the output per hour,and provided reliable guarantee for the success of the steel rolling mill batch.%承德钢铁有限公司自2009年开始研究轧制 PSB830精轧钢筋，其使用特点是在钢筋的任意截面处都能用带有内螺纹的连接器联接或拧上螺帽进行锚固，所以精轧钢筋外形是重要的研究内容，外形轧制的难点在于轧辊肋槽的铣削。通过实践摸索，根据精轧螺纹外形尺寸要求，确定了刀具的外形尺寸和角度，计算了刀具的运行轨迹，并精确地计算出了刀具的回转半径、Z 轴起点位置和铣刀长度，依此给出了速度修正值，使轧辊肋槽的铣削顺利完成。该工艺改变了传统肋槽的铣削方法，缩短了调整时间，提高了小时产量，为精轧钢筋的批量成功轧制提供了保障。