A method for detecting the round runout of the valve disc end face by using the tapered surface on the rear side of the valve disc
A valve disc end face and valve disc technology, which is applied to measuring devices, mechanical measuring devices, and mechanical devices, etc., can solve the problems of long time required, limited number of times and batches for inspection of valve end faces, and high inspection costs, and achieves operation. Simple, accurate and reliable detection results, and the effect of improving detection accuracy
Active Publication Date: 2020-10-09
YANGTZE NORMAL UNIVERSITY
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Problems solved by technology
Because of the high cost of inspection and the long time required, the valve end face runout and the number and batches of inspection are very limited
Method used
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Embodiment
[0030] Embodiment: A method for detecting the circular runout of the end face of the valve disc by using the conical surface on the rear side of the valve disc. The point contact realizes the unilateral limit of the valve to be detected in the axial direction away from the direction of the valve disc, and then uses the dial gauge set along the length direction of the valve after positioning to make the contact and the detection point of the end face of the valve disc after positioning After contacting and generating a certain pre-pressure, position the dial indicator, then rotate the valve one circle along the axis of the valve itself, and read the difference between the maximum value and the minimum value displayed by the dial indicator, which is the valve disc end surface of the valve. runout tolerance.
[0031] In this way, when the valve is produced, generally the tapered surface is formed by the inner cavity of the lower die, and the end surface of the valve disc is forme...
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The invention discloses a method for detecting circle run-out of a valve collar end face by utilizing a conical surface on rear side of a valve collar. The method is characterized by comprising the following steps: realizing unilateral limiting of a to-be-detected valve in an axial direction deviating from the valve collar direction by virtue of point contact with the conical surface on the rear side of the valve collar in the two left and right directions after the to-be-detected valve is horizontally positioned; enabling a contact of a dial indicator arranged in a valve length direction anda detection point on the positioned valve collar end face to contact after cis-orientation, and producing a certain pre-compression to position the dial indicator; rotating along an own axis of the valve by one circle, and reading the difference between a maximum value and a minimum value of readings displayed by the dial indicator, thereby obtaining run-out tolerance of the valve collar end faceof the valve. The method disclosed by the invention is capable of detecting the circle run-out tolerance of the valve collar end face, and has the advantages of being simple, convenient and rapid in operation, accurate and reliable in detection results, and the like.
Description
technical field [0001] The invention relates to the technical field of production detection of automobile engine parts, in particular to a method for detecting the round runout of the end face of the valve disc by using the tapered surface on the rear side of the valve disc. Background technique [0002] The automobile engine can convert the chemical energy of fuel or other forms of energy into mechanical energy to provide power for the automobile. It is the heart of the automobile and belongs to a technology-intensive product. With the development of our country's economy, while the demand for automobiles is increasing day by day, the automobile industry has developed rapidly, and people's requirements for the performance of automobile engines are also getting higher and higher. [0003] In an automobile engine, the intake and exhaust valve is a component composed of a disc part and a rod part coaxial with the disc part. It is one of the key parts of the car engine and is t...
Claims
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IPC IPC(8): G01B5/00
CPCG01B5/003
Inventor 张军彭小平李世春
Owner YANGTZE NORMAL UNIVERSITY