Quick alignment device for heavy long shaft products and alignment method

The invention discloses a quick alignment device for heavy long shaft products and an alignment method. The device comprises an adjustable measuring rod, a fastening screw, a guide sleeve, a rotatingshaft, a shaft end check ring, a bearing and a tailstock sleeve. According to the alignment device and the alignment method, during use, parts do not need to be adjusted on a center frame, after the center frame is adjusted, then workpieces are directly placed on the center frame, secondary alignment is not needed, and therefore the labor intensity is greatly lowered, and meanwhile, the machiningefficiency is improved; and especially in batch machining application, only one-pass alignment is needed, and therefore the machining period is shortened to a great extent. 本发明公开了一种重型长轴类产品的快速找正装置及找正方法，该装置包括可调节测量杆、紧固螺钉、导向套、转轴、轴端挡圈、轴承、尾座套筒，使用该找正装置及找正方法，不需要零件在中心架上调整，而是将中心架调整好后，再将工件直接放置在中心架上，无需二次找正，极大地降低了劳动强度，同时提高加工效率；特别是在批量加工应用中，只需一次找正，很大程度上缩短了加工周期。