Hobbing cutter remanufacturing method

Abstract

The invention provides a hobbing cutter remanufacturing method. The hobbing cutter remanufacturing method comprises the following steps of S1, carrying out a sealing and pressure maintaining test on a detached hobbing cutter assembly; S2, heating the hobbing cutter assembly which is qualified in the sealing and pressure maintaining test by adopting an induction heating mode, and separating a hobbing cutter body of the hobbing cutter assembly from an old cutter ring; S3, carrying out surface treatment on the old cutter ring, and carrying out quality detection on the treated old cutter ring; S4, preheating an outer circle blade part of the old cutter ring which is qualified in quality detection; S5, cladding or surfacing metal powder on the outer circle of the old cutter ring to a set size, and forming a remanufactured cutter ring; S6, carrying out heat preservation and slow cooling on the remanufactured cutter ring; and S7, after the interference fit value of the diameter of an inner hole of the remanufactured cutter ring and the diameter of the outer circle surface of the cutter body meets the requirement, assembling the remanufactured cutter ring and the cutter body through a hot charging method. The problem of the waste of resources of the old cutter ring in the traditional process of replacing the cutter ring is solved, and the use cost of the hobbing cutter is reduced.

Description

technical field [0001] The invention relates to a hob remanufacturing method. Background technique [0002] At present, tunnel boring shield machines and hard rock TBM tunneling machines mainly rely on disc-shaped hobs to squeeze rocks to crush rock mass. As a vulnerable part in direct contact with rocks, hobs need to be inspected, repaired and replaced frequently. In the traditional process, the wear amount of the cutter ring of the hob is checked first. When the wear amount of the cutter ring reaches the specified value, the hob is disassembled from the cutter head and transported from the tunnel face to the tool repair room outside the tunnel. , Use a cutting machine to cut off the worn knife ring and install a new knife circle. The excised waste cutter rings are directly discarded, and the cut cutter rings cannot be reused, resulting in waste of resources and increased excavation costs. The invention proposes a hob remanufacturing process. The worn cutter ring is not d...

AI Technical Summary

Problems solved by technology

The scrapped cutter rings are discarded directly, and the cut cutter rings cannot be reused, resulting in waste of resources and increased excavation costs

The invention proposes a hob remanufacturing process. The worn cutter ring is not directly cut off by a cutting machine, and the old cutter ring is taken out in a non-destructive manner. To solve the problem of waste of cutter ring resources, remanufacture the hob assembly at the same time, reduce the use cost of the hob, and improve the efficiency of hob maintenance

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