GB/T 7235-1987 in English

SUPERSEDED

Methods for the assessment of departure from roundness--Measurement of variations in radius

Issued on:1987-02-04
Implemented on:1988-01-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $700.00
$679.00

Standard No:	GB/T 7235-1987
Document status:	SUPERSEDED
Superseded by:	GB/T 7235-2004 Geometrical Product Specifications(GPS)--Methods for the assessment of departure from roundness--Measurement of variations in radius
Superseded on:	2005-07-01
Title in English:	Methods for the assessment of departure from roundness--Measurement of variations in radius
Title in Chinese:	评定圆度误差的方法半径变化量测量
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	1987-02-04
Implemented on:	1988-01-01
ICS Classification:	17.040-Linear and angular measurements
Chinese Classification:	J04-Basic standards and general methods
Professional Classification:	GB-National Standard
Related Keywords:	radius scopethis standard roundness error radius change square square circle roundness
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《GB/T 7235-1987评定圆度误差的方法半径变化量测量》。

Scope

This standard specifies the method for determining the roundness error by measuring the radius change with a contact (contact type) instrument and the general characteristics of the instrument. This standard is applicable to evaluate the deviation of the part contour from the ideal circle with any of the following centers after contour transformation under given conditions. The center of the smallest area circle; the center of the least square square circle; the center of the smallest circumscribed circle; the center of the largest inscribed circle.

More samples: JJG 21-2008 JC/T 2453-2018 NB/T 47013.2-2015

Sample only — not a preview of GB/T 7235-1987

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