How to obtain the size of the measuring pin and the positional tolerance of the measuring pin
An acquisition method and a technology of measuring pins, which are applied in the direction of measuring devices and instruments, and can solve problems such as the uncertainty of empirical values
Active Publication Date: 2019-03-01
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
[0003] The main purpose of the present invention is to provide a method for obtaining the size of the measuring pin and the positional tolerance of the measuring pin, so as to solve the problem that in the prior art, designers rely on experience to obtain values for the size of the measuring pin and the positional tolerance of the measuring pin , the problem that the empirical value has uncertainty
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[0018] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.
[0019] This application provides a method for obtaining the size of the measuring pin and the position tolerance of the measuring pin. The measuring pin is used to measure whether the size and position tolerance of the hole to be tested are qualified. Obtain the effective size of the hole, obtain the diameter tolerance of the measurement pin, obtain the total tolerance of the measurement pin, obtain the measurement pin size and the position tolerance of the measurement pin through the effective size of the hole, the diameter tolerance of the measurement pin, and the total tolerance of the measurement pin.
[0020] Among them, the size of the measurement pin includes the nominal size of the m...
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The invention provides a method for acquiring the dimension of a measuring pin and the position tolerance of the measuring pin. The measuring pin is used for determining whether the position of a hole to be measured meets the demand or not, and the dimension of the measuring pin comprises the name dimension of the measuring pin and the dimensional deviation of the measuring pin. The acquiring method comprises the steps that the virtual dimension of the hole to be measured and the gross tolerance of the measuring pin are acquired; the virtual dimension of the hole to be detected and the diameter tolerance of the measuring pin are acquired; the name dimension of the measuring pin is determined through the virtual dimension of the hole to be measured and the gross tolerance of the measuring pin; the dimension of the measuring pin is determined through the name dimension of the measuring pin and the dimension deviation of the measuring pin; the position tolerance of the measuring pin is determined through the gross tolerance of the measuring pin and the diameter tolerance of the measuring pin. According to the technical scheme, the method solves the problems that in the prior art, a designer values the dimension of the measuring pin and the position tolerance of the measuring pin through experience, and empirical valuation has uncertainty.
Description
Technical field [0001] The invention relates to the field of measurement of mechanical parts, in particular to a method for obtaining the size of a measuring pin and the position tolerance of the measuring pin. Background technique [0002] The position degree integrated gauge is often used for the accuracy detection of the size when the surface of the part inspection has the largest physical requirement, for example, the accuracy of the measured hole is detected by the measuring pin. The value of the measurement pin size is directly related to whether the accuracy of the hole to be tested can be accurately detected, so the value of the measurement pin size is particularly important when detecting the actual contour of the part. At present, designers rely on experience to determine the gauge size of the measuring pin, which is uncertain. Summary of the invention [0003] The main purpose of the present invention is to provide a method for obtaining the size of the measuring pin a...
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IPC IPC(8): G01B21/00
CPCG01B21/00
Inventor 刘梅张红丽徐改弟
Owner CHINA HANGFA SOUTH IND CO LTD