Device and method for rotationally pressing positioning spring on nuclear fuel rod

The invention belongs to the technical field of nuclear fuel element manufacturing, and particularly relates to a device and method for rotationally pressing a positioning spring on a nuclear fuel rod. The device is a variable-diameter positioning spring device, on one hand, the device meets the technical requirement that a positioning spring is accurately positioned in a cladding pipe, the assembling quality of a fuel rod is guaranteed, and on the other hand, by designing the novel positioning spring device, batch production of products is achieved, and the production efficiency is improved. 本发明属于核燃料元件制造技术领域，具体涉及一种用于核燃料棒旋转式压定位弹簧的装置及方法。本装置为可变径定位弹簧装置，本装置一方面满足定位弹簧在包壳管內精准定位的技术要求，保证燃料棒组装质量，另一方面，通过设计新定位弹簧装置，实现产品的批量化生产，提高生产效率。