Positioning and locking device for tube plate hole grooving device

The utility model discloses a positioning and locking device for a tube plate hole grooving device, and belongs to the technical field of machine manufacturing. The eccentric shaft sleeve comprises an eccentric shaft sleeve body, an outer sleeve is arranged on the lower portion of the eccentric shaft sleeve body, a hoop is arranged on the upper portion of the eccentric shaft sleeve body, and the hoop is locked through a fastener. External threads are arranged on the outer side of the eccentric shaft sleeve, and internal threads are arranged in the outer sleeve and the hoop. The problems that tube plate holes are scrapped due to displacement of a positioning device, threads on an eccentric shaft sleeve are jacked and deformed by a set screw, and the positioning device cannot be adjusted can be solved. The device is easy and convenient to operate, stable and reliable, can be adjusted in place at a time, does not loosen, and does not damage external threads of the eccentric shaft sleeve. 本实用新型公开了一种管板孔切槽器定位锁紧装置，属