Depth detection apparatus

Abstract

The invention discloses a depth detection device, which comprises a dial gauge and a sleeve. The inside of the sleeve is provided with a center bore and an upper hole and a lower hole with diameter larger than center bore, one end of the sleeve is connected with a hollow top cover, in the hollow top cover, the dial gauge is fixed by an adjustment bolt, and the measuring head of the dial gauge compresses a measuring rod; the measuring rod can freely slide in the center bore of the sleeve, and a spring is covered on the measuring rod; one end of the spring compresses the bottom end of the hollow top cover, and another end compresses a block fixed on the measuring rod; and the lower end of the measuring rod is connected with a measuring disk. Under non-measuring state, the end surface of the measuring disk holds out the bottom hole end surface of the sleeve. The depth detection device has the advantages of low cost, simple operation and convenient using. The depth detection device does not need repeated operation when being used, the measured values are accurate and reliable, therefore, the time is greatly saved, and the working efficiency is improved. The depth detection device can be used for detecting of the pressed depth and irregularities of the oil seal in an engine or a gearbox.

Description

technical field [0001] The invention relates to a depth detection device, in particular to a detection device for the depth and roughness of oil seal pressing in an engine or a gearbox. Background technique [0002] At present, in the field of assembly of engines and gearboxes, two methods are usually used to detect the depth and unevenness of oil seal pressing. One method is to use a depth gauge. During the measurement process, at least three points must be selected within a circle for measurement. The operation time is too long and inconvenient, resulting in a high error rate of the measured value and insufficient accuracy of the value. Reliable; Another way is to use a height gauge. Although the error of the measured value will be smaller, it is also inconvenient to operate. In the above two measurement methods, it is also difficult to find the reference plane of the measured item during measurement. Chinese Patent No. 01239740.7 discloses an O-ring mold cavity depth me...

AI Technical Summary

Problems solved by technology

One method is to use a depth gauge. During the measurement process, at least three points must be selected within a circle for measurement. The operation time is too long and inconvenient, resulting in a high error rate of the measured value and the value is not accurate enough. Reliable; Another way is to use a height gauge. Although the error of the measured value will be smaller, it is also inconvenient to operate

In the above two measurement methods, it is also difficult to find the reference plane of the measured item when measuring

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