Metal magnetic memory signal acquisition device for R-angle position of waste crankshaft before remanufacturing

Abstract

The invention relates to a metal magnetic memory signal acquisition device for the R-angle position of a waste crankshaft before remanufacturing, and belongs to the field of nondestructive detection. The metal magnetic memory signal acquisition device comprises a probe, a flexible probe clamp, a clamp movable rod, a two-way slide block, a vertical rod, a connecting rod with a chute, a one-way slide block, a connecting rod chute, a ball spline shaft, fixed screws, a support base and a guide rail sleeve, wherein the probe is arranged in the flexible probe clamp; one end of the clamp movable rodis fixedly connected with the flexible probe clamp, and the other end of the clamp movable rod passes through a horizontal slideway of the one-way slide block and a horizontal slideway of the two-wayslide block; the one-way slide block is fixed in the chute of the chute connecting rod; a vertical slideway of the two-way slide block is sleeved on the vertical rod; the chute connecting rod is connected with the ball spline shaft by a screw; the ball spline shaft is fixed on the support base by a rolling bearing; the vertical rod is fixed on the support base by a screw; and the guide rail sleeve is connected to the lower side of the support base. By the metal magnetic memory signal acquisition device, the probe is perpendicular to the curved surface of an R angle of the crankshaft, liftoff values are adjustable, and metal magnetic memory signals at the R-angle position of a shaft neck are acquired at constant speed.

Description

technical field [0001] The invention relates to a metal magnetic memory signal acquisition device at the R angle part of a remanufactured crankshaft, which belongs to [0002] Non-destructive testing technology field. Background technique [0003] The crankshaft is the most important moving part of the engine, and the R angle is the fillet of the transition between the crankshaft journal and the crank arm. There is a strong stress concentration at the R angle of the crankshaft. Under service conditions, this part is a potentially dangerous part, prone to fatigue failure. [0004] Due to the harsh working conditions, the quality requirements of the crankshaft are high, and the remanufacturing value is high. To carry out the remanufacturing of automobile engine crankshafts, it is first necessary to evaluate the degree of fatigue damage of the recovered used crankshafts, predict their remaining life, judge the value of remanufacturing, and decide whether the used crankshafts...

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