Hydraulic tensioning sleeve tool

Abstract

The invention discloses a hydraulic tensioning sleeve tool which comprises a core shaft, a hydraulic tensioning sleeve, a locking nut, a piston connecting sleeve, a bolt and a piston, wherein an innerhole I and an inner hole II communicating with each other are formed in the core shaft in the axial direction; an oil supply hole is formed in the left end of the core shaft, is a threaded hole and communicates with the inner hole I; the hydraulic tensioning sleeve is arranged on the outer side of the core shaft in a sleeving manner; the two ends of the hydraulic tensioning sleeve are fixedly connected with the core shaft; an annular oil storage cavity I and an annular oil storage cavity II are formed in the inner hole wall of the hydraulic tensioning sleeve; the piston is connected with thehole wall of the inner hole II in a sliding and sealing manner; the piston connecting sleeve is fixed in the inner hole II of the core shaft; a bolt through hole is formed in the piston connecting sleeve in the axial direction; the bolt through hole is in threaded connection with the bolt; and the bolt bar end part of the bolt is connected with the piston. The hydraulic tensioning sleeve tool expands the hydraulic tensioning sleeve through hydraulic pressurization; and as the intensity of the oil pressure is controllable, the expanding size of the hydraulic tensioning sleeve is controllable,the problem that tensioning cannot be realized between the hydraulic tensioning sleeve tool and a product or the product has compressional deformation is avoided and the product quality is improved.

Description

Technical field [0001] The invention belongs to the technical field of motor tooling, and specifically relates to a hydraulic expansion tooling. Background technique [0002] At present, the expanding sleeve tooling that combines the mandrel and the expansion sleeve is used. The expansion sleeve adopts the inner cone surface of the expansion sleeve and the outer cone surface of the mandrel to work closely together, and the outer circle of the expansion sleeve is processed to the right, and the groove is cut by wire cutting to make the expansion sleeve Have flexibility. By striking the mandrel, the outer circle of the expansion sleeve is enlarged to realize the tightening with the inner hole of the product; however, the expansion sleeve tooling cannot be controlled due to the percussion force, such as excessive percussion, the expansion sleeve will squeeze and deform the product; If the strength is not enough, the tension between the set and the product cannot be tightened. Ther...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a hydraulic expansion sleeve tool for the shortcomings of the above-mentioned prior art. The hydraulic expansion sleeve tool uses hydraulic pressure to expand the hydraulic expansion sleeve. Since the oil pressure is controllable, the hydraulic expansion sleeve expands. The size is controllable, and there will be no problems that the product cannot be tightened or the product will be squeezed and deformed, which improves the product quality

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