Inspection tool for detecting oil hole position of main journal and connecting rod neck of crankshaft

Abstract

The invention discloses an inspection tool for detecting the oil hole position of a main journal and a connecting rod neck of a crankshaft, comprising a bottom plate, a foot block I, a foot block II,a foot block III and a V-shaped positioning frame. The bottom plate is fixedly provided with the foot block I near to a middle position; an installation hole in one end of the foot block I is providedwith a V-shaped positioning block, two sides of the V-shaped positioning block on the bottom plate are symmetrically fixed with the foot block II and the foot block III, and installation holes in oneends of the foot block II and the foot block III are respectively provided with a composite finial I and a composite finial II; and the bottom plate is also provided with the V-shaped positioning frame, the bottom plate is provided with a measurement seat I in front of the V-shaped positioning block, the measurement seat I is provided with at least one measurement core rod I, the bottom plate isprovided with at least one measurement seat II at two sides between the composite finial I and the composite finial II, and each measurement seat II is provided with at least one measurement core rodII. The inspection tool has the advantages of simple and reasonable structure, simple operation, good positioning effect, high detection efficiency and high detection accuracy.

Description

technical field [0001] The invention relates to a checker for detecting the position degree of an oil hole of a crankshaft, in particular to a checker for detecting the position degree of an oil hole of a main journal of a crankshaft and a connecting rod neck. Background technique [0002] The crankshaft needs lubricating oil to lubricate when it rotates at high speed, so oil holes are provided on the crankshaft to provide lubricating oil. The existence of these oil holes will improve the fatigue resistance of the crankshaft to a certain extent. The position of these oil holes is directly related to the lubrication degree of the crankshaft surface, so it is necessary to detect the oil hole position on the crankshaft after rough machining and the oil hole position on the crankshaft after finishing to ensure the processing quality. At present, the three-coordinate inspection machine is mainly used for inspection. On the one hand, it is not only expensive and cumbersome to oper...

AI Technical Summary

Problems solved by technology

At present, the three-coordinate inspection machine is mainly used for inspection. On the one hand, it is not only expensive and cumbersome to operate, but also has high requirements for inspection personnel and the inspection environment. On the other hand, the inspection is time-consuming and the inspection efficiency is low. Rapid inspection of batch products Moreover, when using the three coordinates to detect the position of the oil hole on the crankshaft after rough machining, there is often a large measurement error due to the inconsistency with the machining reference. Once the position of the oil hole on the crankshaft after finishing is detected Only when the out-of-tolerance is found, there must be out-of-tolerance position of the oil hole on the crankshaft after batch rough machining in the middle, resulting in the scrapping of the batch crankshaft due to the out-of-tolerance of the oil hole position, which greatly increases the production cost

At present, there are also defects of cumbersome operation and low detection efficiency in the three-coordinate detection, and a multi-oil hole position detection device is proposed, such as the patent number ZL201621358468.9, a crankshaft multi-oil hole position detection device at the same time, through V-shaped positioning The crankshaft is positioned by the block and measured simultaneously by setting multiple detection rods. Although the operation is simple and the detection efficiency is improved, it is only positioned by the V-shaped positioning block. On the one hand, the position of the oil hole on the main journal can only be measured. It is impossible to detect the position of the oil hole on the connecting rod neck. On the other hand, it can only detect the position of the oil hole on the crankshaft after finishing. Only when the position of the oil hole on the crankshaft after finishing is detected You will find out-of-tolerance, the same as the three-coordinate measurement, there must be out-of-tolerance position of the oil hole on the crankshaft after batch rough machining, which will cause the batch crankshaft to be scrapped due to the out-of-tolerance of the oil hole position, which greatly increases the production cost

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