Diesel engine main bearing cover duplication measurement tool and measurement and duplication method

Abstract

The invention discloses a diesel engine main bearing cover replicating and measuring tool which is in a horizontal L shape. The diesel engine main bearing cover replicating and measuring tool includesa vertically arranged short edge and a horizontally arranged long edge, the inner side surfaces of the short edge and the long edge are used as a measuring reference surface, and the length of the short edge is less than the height of slant surfaces of two sides of the main bearing cover. The invention further discloses a measuring and replicating method which includes the steps that (1) an usedmain bearing cover and a to-be-replicated main bearing cover are separately fixed to a tool working table, (2) the machining size of the used main bearing cover is measured, (3) the distance of slantsurfaces of point angles of two ends of the used main bearing cover and the shaft axis of an arc surface are separately measured, and (4) the to-be-replicated main bearing cover is aligned and machined. According to the diesel engine main bearing cover replicating and measuring tool and the measuring and replicating method, the structure is simple, the machining is convenient, the machining quality and the machining efficiency are improved through the measuring and the replicating method, and the problem of machining of slant surfaces of two sides of the main bearing cover is solved.

Description

technical field [0001] The invention relates to a main bearing cap of a diesel engine, in particular to a measuring tool for measuring the distance between the upper side slopes at both ends of the main bearing cap of a used diesel engine and the reference axis line of the main bearing cap of a diesel engine, and also includes a measuring and copying method , belongs to the field of metal cutting technology. Background technique [0002] The frame is a key part of the diesel engine, in which the crankshaft, camshaft and multiple cylinder liners are installed, the cylinder head is assembled on the top, and the oil pan is assembled on the bottom. The frame has many critical dimensions, which directly affect the product quality. The main bearing hole is one of the key dimensions inside the frame. The crankshaft that provides power is installed in the main bearing hole. Other dimensions of the frame are related to the main bearing hole. Whether the main bearing hole is qualifie...

AI Technical Summary

Problems solved by technology

In some special cases, if there is a defect in the material of the main bearing cap, it can only be found after the boring is completed, which will cause the main bearing cap to be scrapped, so it is necessary to reprocess a new main bearing cap, or repair the diesel engine during maintenance. The main bearing cap needs to be replaced. At this time, there is no supporting frame for boring, so the main bearing cap can only be processed separately. It is also necessary to ensure that the processing size of the main bearing cap is exactly the same as the matching size of the frame. greater difficulty

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