Bolt bar part circular groove rolling strengthening method and rolling strengthening device for turning lathe

Abstract

The invention discloses a bolt bar part circular groove rolling strengthening method and a rolling strengthening device for a turning lathe. When a surface of a bolt bar part circular groove is rolledand strengthened, the turning lathe is adopted for rolling strengthening on the bolt bar part circular groove, one end of a bolt needing to be rolled and strengthened is clamped on a chuck of the turning lathe, the other end of the bolt is tightened by a centre of the turning lathe, then the rolling strengthening device for the turning lathe is arranged on a tool holder of the turning lathe, a rolling wheel capable of pressing the bolt bar part circular groove is arranged on the rolling strengthening device for the turning lathe, after the rolling wheel is aligned at and ejects the bolt bar part circular groove needing to be rolled and strengthened, the chuck of the turning lathe drives the bolt to rotate, and a friction force generated when the rolling wheel ejects the bolt bar part circular groove can drive the rolling wheel to rotate together, so that the bolt bar part circular groove is rolled and strengthened through the rolling wheel. The bolt bar part circular groove rolling strengthening method and the rolling strengthening device for the turning lathe provided by the invention have the beneficial effects of high processing efficiency, low cost, good quality, the simple structure, convenience in use and the like.

Description

technical field [0001] The invention relates to a rolling strengthening method for an annular groove of a bolt shank and a rolling strengthening device for a lathe, belonging to the technical field of surface rolling strengthening treatment of a bolt shank. Background technique [0002] The annular grooves of the rods of the high-pressure inter-rotor bolts and D-head bolts used in the fields of existing aircraft engines and gas turbine engines all need to be rolled and strengthened. At present, when carrying out rolling strengthening treatment on such bolts, double rollers are used to realize the strengthening rolling treatment on the thread rolling machine. This strengthening treatment method in the prior art not only has long installation and adjustment time of the rollers, low efficiency, but also It is also necessary to use special equipment such as a thread rolling machine, which increases the processing cost. In the existing processing method, because the two rollers a...

AI Technical Summary

Problems solved by technology

At present, when carrying out rolling strengthening treatment on such bolts, double rollers are used to realize the strengthening rolling treatment on the thread rolling machine. This strengthening treatment method in the prior art not only has long installation and adjustment time of the rollers, low efficiency, but also It is also necessary to use special equipment such as a thread rolling machine, which increases the processing cost. In the existing processing method, because the two rollers are manually adjusted, it is difficult to align the rollers on both sides accurately, so the rolling size Poor consistency, high product rejection rate

Therefore, the existing rolling strengthening method for the annular groove of the bolt shank is still not ideal.

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