Machining method for ductile iron crankshaft thrust surfaces

Abstract

The invention discloses a processing method for the thrust surface of a nodular iron crankshaft. The crankshaft includes a rear end of the crankshaft and a main journal, and the thrust surface of the main journal is divided into a left thrust surface and a right thrust surface arranged oppositely. The method Including: respectively measure the axial distance between the rear end of the crankshaft and the right thrust surface and the inter-shaft distance between the right thrust surface and the left thrust surface through the electronic measuring head; determine the right thrust surface according to the axial distance The axial dimensional tolerance of the thrust surface to be finished; determine the inter-axle dimensional tolerance of the left thrust surface to be finished according to the distance between the shafts and the axial dimensional tolerance; Carry out finishing machining. The processing method of the thrust surface of the nodular iron crankshaft proposed by the present invention uses the electronic measuring head to measure the axial distance and the distance between the shafts, and determines the machining allowance for the thrust surface to be finished and finished, and solves the thrust problem by adopting the finish turning process. The problem of grinding burns in surface grinding processing, and the equipment investment cost is less than that of fine turning rolling process.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment processing, in particular to a processing method for a nodular iron crankshaft thrust surface. Background technique [0002] The crankshaft is one of the most important and heavily loaded components in a piston engine. The crankshaft, connecting rods, and pistons together form a crank-connecting rod mechanism. When the engine is working, the downward thrust of the piston is transmitted to the crankshaft through the connecting rod, and the reciprocating motion of the piston is converted into the rotary motion of the crankshaft through the crankshaft, and mechanical work is output, and the car is driven through the transmission mechanism of the car chassis, while the thrust surface of the crankshaft is The benchmark for subsequent finishing of the crankshaft, so the processing quality of the thrust surface of the crankshaft directly affects the quality of other processes. [0003] The ...

AI Technical Summary

Problems solved by technology

For this reason, the purpose of the present invention is to propose a processing method for the thrust surface of a nodular iron crankshaft, which solves the problem of grinding burns produced by the grinding process and expensive equipment in the finish car rolling process when the thrust surface of the nodular iron crankshaft is processed

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