Standard No.:	GB/T 7235-2004
English Name:	Geometrical Product Specifications(GPS)--Methods for the assessment of departure from roundness--Measurement of variations in radius
Chinese Name:	产品几何量技术规范(GPS)评定圆度误差的方法 半径变化量测量
Chinese Classification:	J04    Basic standards and general methods
Professional Classification:	GB    National Standard
ICS Classification:	17.040.20 17.040.20    Properties of surfaces 17.040.20
Issued by:	AQSIQ; SAC
Issued on:	2004-11-11
Implemented on:	2005-7-1
Status:	valid
Superseding:	GB/T 7235-1987 Methods for the assessment of departure from roundness--Measurement of variations in radius
Language:	English
File Format:	PDF
Word Count:	5500 words
Price(USD):	485.00
Delivery:	via email in 1~3 business day

本标准规定了用接触式（触针式）仪器测量半径变化量评定圆度误差的方法和仪器的一般特性。本标准适用于在给定条件下，经轮廓转换，以下列任一圆心来评定零件轮廓的圆度误差。---最小区域圆圆心；---最小二乘圆圆心；---最小外接圆圆心；---最大内接圆圆心。