Depth detection device for cylinder head valve retainer sealing surface

Abstract

The invention provides a depth detection device for a cylinder head valve retainer sealing surface. The depth detection device comprises a gauge stand, a correcting mechanism and a measuring mechanism, wherein the gauge stand comprises a pointer gauge, a gauge cover, a gauge body and a central spindle; the pointer gauge is embedded in the gauge cover; the gauge cover is fixedly arranged on the gauge body; the central spindle is in sliding fit with an inner hole of the gauge body; the correcting mechanism comprises a base and a standard part upright post fixed on the base; the measuring mechanism comprises a bulb and a rod. During correction, the base of the correcting mechanism is pressed against the gauge body, and the standard part upright post is contacted with the movable central spindle so as to realize zero calibration; and during measurement, the measuring mechanism is arranged in a workpiece, the bulb is tangential to the sealing surface, and a valve line depth value is reversely deduced according to change of the pointer gauge. The measuring mechanism disclosed by the invention has a spherical head and is directly put into the workpiece during measurement, the measurement time is effectively saved, and due to an independent correcting mechanism, one-time correction and repeated measurement can be realized, the correction time is effectively reduced, and the overall detection efficiency is improved.

Description

technical field [0001] The invention relates to the field of inspection tools, in particular to a depth detection device for the sealing surface of a cylinder head valve seat ring. Background technique [0002] The cylinder head is one of the main parts of the engine, and its processing quality directly affects the overall performance of the engine. In engine manufacturing, there is a high requirement for the processing accuracy of the cylinder head. In particular, the processing accuracy of the cylinder head sealing surface, whether the sealing performance between the intake and exhaust side valves and the cylinder head seat is good or not directly affects the output power, fuel consumption and other important characteristics of the automobile engine. Among the various dimensions that affect the sealing performance, the roundness of the seat ring, the position of the seat ring relative to the conduit hole, the width of the seat ring sealing surface, and the angle of the sea...

AI Technical Summary

Problems solved by technology

[0004] Using the above inspection tools, there are the following disadvantages: First, when measuring the Verne depth of each seat ring sealing surface of each cylinder head, it is necessary to first measure the bottom surface of the cylinder head for zero calibration, for example, a cylinder head has 16 The depth of the Verne line needs to be tested, so it needs to be zeroed 16 times. The detection process is too cumbersome and time-consuming; secondly, when measuring the specific point of the specific point, it is necessary to find the highest point of the specific point, which is also time-consuming

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