Machine tool transmission shaft structure

The utility model discloses a machine tool transmission shaft structure, relates to the technical field of machine tool transmission shafts, and has the advantages that lubricating oil can be conveniently supplemented to the connecting position of a transmission shaft, and the service life of the transmission shaft is prolonged. A connecting groove, a threaded hole and an oil inlet groove are sequentially formed in the middle of the interior of the transmission shaft body from top to bottom, a plurality of transverse circulation grooves are formed in the bottom end of the oil inlet groove, the ends, away from the oil inlet groove, of the circulation grooves extend to the end of the connecting base, and the connecting groove, the threaded hole, the oil inlet groove and the circulation grooves communicate with one another. And a first sealing assembly for sealing the connecting groove is detachably and fixedly arranged on the connecting groove. 本实用新型公开了一种机床传动轴结构，涉及机床传动轴技术领域，具有便于对传动轴连接处补充润滑油，提高传动轴使用寿命的优点，其技术方案要点