Method for repairing micro-contact fatigue damage of tooth surface and repairing device

Abstract

The invention discloses a method for repairing micro-contact fatigue damage of a tooth surface and a repairing device. The method comprises the following steps that a to-be-repaired gear is fixed on a motion platform through a clamp; geometrical morphology characteristics of a to-be-repaired area are measured by using a three-dimensional morphology instrument, collected information is input to a comprehensive control and monitoring system, and material and mechanical characteristics of the to-be-repaired gear are compared through a database to determine optimal laser shock repair process parameters; the optimal process parameters are imported into a pulse laser generator, the laser generator emits laser according to the optimal process parameter scheme, and laser beams are exported through a light path regulation and control system and a light path system; meanwhile, a water restraint layer system controls a water nozzle to form a water restraint layer on the tooth surface; and the laser acts on the to-be-repaired area on the tooth surface, so that the gear generates the required reinforced repair effect, and the purpose of repairing the tooth surface damage is achieved. The problems that in a traditional repairing mode, the process is complex, roughness is high, abrasion resistance is poor, and the gear can be repaired only after obvious defects or faults occur to the gear are solved.

Description

technical field [0001] The invention belongs to the technical field of gear repair, and in particular relates to a method and a repair device for repairing micro-contact fatigue damage on tooth surfaces. Background technique [0002] Gears are one of the most commonly used mechanical parts, with complex shapes and high manufacturing costs. The working condition of the gear is generally continuous operation under load-bearing conditions, subject to pulsating cycle variable stress, after many cycles, some micro-cracks will appear on the surface near the pitch line near the tooth root side, if not suppressed, the micro-cracks will Continued expansion will lead to peeling and wear of the surface layer, which will affect the smoothness of gear transmission, and severe expansion pitting will even cause the gear to be scrapped in a short time. Therefore, it is of great significance to repair the tooth surface and inhibit the pitting corrosion growth in the initial stage of micro...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method and a repairing device for repairing micro-contact fatigue damage on the tooth surface, so as to solve the problems of complex process, large roughness and poor wear resistance in the traditional repairing method, and it can only be repaired after the gear has obvious defects or failures. Fixed issues

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