Method and test tool for detecting chamfer depth and angle of valve seat hole

Abstract

The invention discloses a method for detecting the chamfer depth and angle of a valve seat hole. The method comprises the following steps: firstly, setting a standard cone which can be adapted to thechamfer of the standard valve seat hole, and forming an upper limit detection plane and a lower limit detection plane at the top end of the standard cone; secondly, coating the cone surface of the standard cone with a layer of dye; thirdly, inserting the standard cone into the valve seat hole to detect whether the vertex of the chamfer of the valve seat hole is between the upper limit detection plane and the lower limit detection plane or not; and finally, rotating the standard cone to detect whether the dye area of a chamfer cone on the standard cone meets the requirements or not. The invention also provides a test tool for detecting the chamfer depth and angle of the valve seat hole. The detection method and test tool for detecting the chamfer depth and angle of the valve seat hole havethe advantages of rapid detection of depths and angles, integral detection of depths and angles, high specificity, convenience in operation, accurate and clear detection results and high detection accuracy.

Description

technical field [0001] The invention relates to the technical field of engine manufacturing, more specifically, it relates to a detection method and a checker for detecting the chamfer depth and angle of a valve seat hole. Background technique [0002] The valve seat hole is an important part of the cylinder head, and its machining accuracy is required to be high. At present, the inspection tools used for the depth and angle of the valve seat hole are vernier calipers and universal angle rulers. The chamfering depth is converted to obtain the diameter of the chamfering hole, and then the diameter of the chamfering hole is detected with a vernier caliper; the chamfering angle is detected with a universal angle ruler. [0003] The original inspection tools are all general inspection tools. The vernier caliper detects the diameter of the chamfer hole, and the caliper has no clamping position. It can only roughly place the joint between the chamfer and the end face. The operati...

AI Technical Summary

Problems solved by technology

[0003] The original inspection tools are all general inspection tools. The vernier caliper detects the diameter of the chamfer hole, and the caliper has no clamping position. It can only roughly place the joint between the chamfer and the end face, which is inconvenient to operate and inaccurate to measure. Use a universal angle ruler Measuring the chamfering angle, judging the angle size through the light transmission direction and size, the detection accuracy error is large

The disadvantages of the prior art: the detection operation is inconvenient, the detection is not accurate, the detection error is large, and the accuracy requirement cannot be met

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