A measuring tool and measuring method for thrust block width dimension of engine body

Abstract

The invention discloses a measurement tool and measurement method for width dimension of a thrust stop of an engine body. A displacement value of a conductor relative to a slide-sensitive resistor through a current testing device, and whether the width dimension of the thrust stop is qualified or not can be detected directly through measuring the width dimensional of a thrust stop having a standard width dimension and a to-be-measured thrust stop separately and then comparing the width dimensions. For a manufacturer, by adopting the tool and the method provided by the invention, the width dimension data of the thrust stop can be measured online through simple operation, whether the width dimensional of the to-be-measured thrust stop is qualified or not and the deviation trend can be acquired through the current testing device, so that higher convenience and accuracy are achieved. Compared with the prior art employing a vernier caliper, the detection precision is improved greatly. Compared with measurement by employing a three-coordinate measuring machine, the invention is more convenient in operation and low in cost. At the same time, through online detection, unqualified components can be modified timely so as to correct processing errors, so that yield and consistency of products can be improved.

Description

technical field [0001] The invention relates to a checking tool, in particular to a checking tool and a measuring method for the width dimension of a thrust block of an engine body. Background technique [0002] The engine body is an important part of the engine assembly. The upper part of the engine body is equipped with a cylinder head, and the lower part of the body is equipped with a crankshaft. In this way, a continuous power transmission is formed between the cylinder head, the body and the crankshaft. It is a component of each system of the engine. important guarantee for operation. The crankshaft mounting bearing seats on the engine body are equally spaced in the lower crankcase of the engine body. When the crankshaft is installed on the engine body, the bearing seats of each gear are radially matched with the upper main shaft of the crankshaft to ensure stable and reliable engine operation. Among these bearing seats, there is a bearing seat called engine body thrus...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the first one uses a general-purpose vernier caliper to roughly measure the width of the thrust block. Due to the relatively large detection error of the vernier caliper itself, and because of the small space in the crankcase at the lower part of the body, it is inconvenient and easy to use the vernier caliper for detection. Scratches on fingers, etc., the operating space is limited, so that the detection accuracy cannot meet the detection requirements of the push stop

The second type uses a three-coordinate measuring machine for precision testing. Although the three-coordinate measuring machine has high measurement accuracy, the investment cost is high and the measurement process is complicated. It is not suitable for production line testing, especially in high-production periods, and it is impossible to use three coordinates for each machine. Measuring machine testing, product quality cannot be guaranteed, and at the same time, the testing process of the three-coordinate measuring machine needs to design and manufacture special testing fixtures to facilitate the establishment of the workpiece coordinate system, which is time-consuming and laborious, and cannot meet the purpose of batch testing

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