Chinese Standard: 'GB/T 16857.9012020'
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Geometrical product specifications (GPS)  Acceptance and reverification tests for coordinate measuring machines (CMM)  Part 901: CMMs with multiple imaging probing system
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GB/T 16857.9012020

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Standard ID  GB/T 16857.9012020 (GB/T16857.9012020)  Description (Translated English)  Geometrical product specifications (GPS)Acceptance and reverification tests for coordinate measuring machines (CMM)Part 901: CMMs with multiple imaging probing system  Sector / Industry  National Standard (Recommended)  Classification of Chinese Standard  A22  Classification of International Standard  01.080.01  Word Count Estimation  14,124  Date of Issue  20200331  Date of Implementation  20201001  Drafting Organization  Suzhou Tianzhun Technology Co., Ltd., China Machinery Productivity Promotion Center, China Academy of Metrology, Shaanxi Weir Mechanical and Electrical Technology Co., Ltd., Shenzhen Metrology Quality Inspection Institute  Administrative Organization  National Product Geometry Technical Standardization Technical Committee (SAC/TC 240)  Regulation (derived from)  National Standards Announcement No. 4 of 2020  Proposing organization  National Product Geometry Technical Standardization Technical Committee (SAC/TC 240)  Issuing agency(ies)  State Administration for Market Regulation, Standardization Administration of China 
GB/T 16857.9012020
Geometrical product specifications (GPS)  Acceptance and reverification tests for coordinate measuring machines (CMM)  Part 901.CMMs with multiple imaging probing system
ICS 17.040.30
J04
National Standards of People's Republic of China
Product Geometric Technical Specification (GPS)
Acceptance test and reinspection test of coordinate measuring machine
Part 901.Configuration of multiimage detection system
Coordinate measuring machine
20200331 released
20201001 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Preface
GB/T 16857 ``Acceptance Testing and Reinspection Testing of GPS Coordinate Measuring Machines'' is planned to be divided into the following parts.
Part 1.Vocabulary;
Part 2.Coordinate measuring machines used to measure linear dimensions;
Part 3.Configure the axis of the turntable as the fourth axis of the coordinate measuring machine;
Part 4.Coordinate measuring machine used in scan mode;
Part 5.Coordinate measuring machine using single probe or multiprobe contact detection system;
Part 6.Calculate the evaluation of the error of Gaussian fitting elements;
Part 7.Coordinate measuring machine using visual detection system;
Part 8.Coordinate measuring machine using optical distance sensor;
Part 9.Coordinate measuring machine equipped with multiple detection systems;
Part 901.Coordinate measuring machine with multiimage detection system;
Part 10.Laser tracker used to measure the distance from point to point;
Part 12.Articulated arm coordinate measuring machine (CMM).
This part is part 901 of GB/T 16857.
This section was drafted in accordance with the rules given in GB/T 1.12009.
Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents.
This part is proposed and managed by the National Standardization Technical Committee for Product Geometric Technical Specifications (SAC/TC240).
Drafting organizations of this section. Suzhou Tianzhun Technology Co., Ltd., China Machinery Productivity Promotion Center, China Institute of Metrology, Shaanxi Wei
Er Electromechanical Technology Co., Ltd., Shenzhen Institute of Metrology and Quality Inspection.
The main drafters of this section. Wang Zhiwei, Ming Cuixin, Wang Weinong, Cao Kuikang, Yang Cong, Yu Jiping, Shi Yushu, Guo Jiping, Zhang Tao, Zhu Yue.
introduction
This part is based on ISO 103609Geometrical productspecifications(GPS)Acceptanceandreverifica
tiontestsforcoordinatemeasuringsystems(CMS)Part 9.CMMswithmultipleprobingsystems
Drafting is the specific condition of the coordinate measuring machine (in accordance with the definition in Part 7) of the visual detection system with multiple different parameters and directions.
Specific applications under.
Product Geometric Technical Specification (GPS)
Acceptance test and reinspection test of coordinate measuring machine
Part 901.Configuration of multiimage detection system
Coordinate measuring machine
1 Scope
This part of GB/T 16857 specifies the acceptance inspection and reinspection inspection of coordinate measuring machines equipped with multiimage detection systems.
method.
The test results described in this section include the influence of various errors of the coordinate measuring machine and the detection system.
Supplement to the detection error and length measurement error detection of the system coordinate measuring machine.
This section applies to coordinate measuring machines equipped with multiple image probes.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 18779.1 Product Geometrical Quantity Technical Specification (GPS) Measurement Inspection of Workpieces and Measuring Equipment Part 1.Inspection According to Specifications
Rules for determining qualified or unqualified inspection (GB/T 18779.12002, eqvISO 142531.1998)
ISO 103601 Product Geometric Technical Specification (GPS) Acceptance test and reinspection test of coordinate measuring machine Part 1.Vocabulary
[Geometricalporductspecifications(GPS)Acceptanceandreverificationtestsforcoordinatemeasur
ingmachines(CMM)Part 1.Vocabulary]
ISO 103607 Product Geometric Technical Specification (GPS) Acceptance test and reinspection test of coordinate measuring machine Part 7.Use visual
Coordinate measuring machine of perception detection system [Geometrical productspecifications(GPS)Acceptanceandreverification
testsforcoordinatemeasuringmachines(CMM)Part 7.CMMsequippedwithimagingprobingsys
tems]
ISO 103609 Product Geometric Technical Specification (GPS) Acceptance test and reinspection test of coordinate measuring machine Part 9.Multiple configurations
A coordinate measuring machine for a detection system [Geometrical productspecifications(GPS)Acceptanceandreverification
testsforcoordinatemeasuringsystems(CMS)Part 9.CMMswithmultipleprobingsystems]
ISO 142531 Geometric Technical Specifications for Products (GPS) Measurement and Inspection of Workpieces and Measuring Equipment Part 1.Inspection and Inspection of the Standard
[Geometricalporductspecifications(GPS)Inspectionbymeasurementof
workpiecesandmeasuringequipmentPart 1.Decisionrulesforverifyingconformityornonconformitywith
specifications]
ISO /IEC Guide99 International Metrology Vocabulary Fundamentals and Common Concepts and Related Terminology (VIM) [Internationalvocabu
laryofmetrologyBasicandgeneralconceptsandassociatedterms(VIM)]
3 Terms and definitions
The terms defined by ISO 103601, ISO 103607, ISO 103609, ISO 142531 and ISO /IEC Guide99 and the following
And definitions apply to this document.
3.1
Imagingprobingsystemimagingprobingsystem
Establish a detection system for measuring points through the imaging system.
Note 1.This section is mainly about image detection systems that can measure in the lateral direction of the detection system axis.
Note 2.Video or visual detection system is the image detection system.
3.2
CMMswithmultipleimagingprobingsystem
Coordinate measuring machine equipped with multiple image detection systems.
3.3
(Of the imaging probe system) measuring plane (of the imaging probing system)
The twodimensional plane defined by the field of view of the image detection system.
3.4
Parallel multiple imaging detection system paralelmultipleimagingprobingsystem
Multiimage detection system with parallel measurement planes.
3.5
Nonparalelmultipleimagingprobingsystem
Multiimage detection system with nonparallel measurement planes.
3.6
Testcircle
A round physical standard device for acceptance testing and reinspection testing.
3.7
Testsphere
A spherical physical standard device for acceptance inspection and reinspection inspection.
3.8
Parallel multiple imaging detection system shape error paralel multiple imaging probing system form error
PForm.Cir.n×25∷PMIPS
Use the parallel multiimage detection system to measure the same detection circle, and use the unconstrained least squares method to fit the data of all image detection systems
Calculate the center of the circle, the range of the distance from all measuring points to the center of the circle is the shape error.
3.9
Parallel multiple imaging detection system size error paralel multiple imaging probing system size error
PSize.Cir.n×25∷PMIPS
Use the parallel multiimage detection system to measure the same detection circle, and use the unconstrained least squares method to fit the data of all image detection systems
Calculate the diameter, the difference between the calculated value and the actual value of the detection circle is the size error.
3.10
Parallel multiple imaging detection system position error paralel multiple imaging probing system location error
LDia.Cir.n×25∷PMIPS
Use the parallel multiimage detection system to measure the same detection circle, and use the unconstrained least square method to fit the data of each detection system
The center of the circle, the diameter of the smallest circumscribed circle including the center of each circle, is the position error.
3.11
Nonparalelmultipleimagingprobingsystemformerror
PForm.Sph.n×25∷NPMIPS
Use the nonparallel multiimage detection system to measure the same detection ball, and use the unconstrained least squares method to simulate the data of all image detection systems.
Calculate the center of the sphere together, and the range of the distance from all measuring points to the center of the sphere is the shape error.
3.12
Nonparalelmultipleimagingprobingsystemsizeerror
PSize.Sph.n×25∷NPMIPS
Use the nonparallel multiimage detection system to measure the same detection ball, and use the unconstrained least squares method to simulate the data of all image detection systems.
The diameter is calculated together, and the difference between the calculated value and the actual value of the detection ball is the size error.
3.13
Nonparalelmultipleimagingprobingsystemlocationerror
LDia.Sph.n×25∷NPMIPS
Use the nonparallel multiimage detection system to measure the same detection ball, and use the unconstrained least squares method to fit the data of each detection system.
Calculate the center of the sphere, including the diameter of the smallest circumscribed sphere of each center, that is, the position error.
3.14
Parallel multiimage detection system shape maximum allowable error maximumpermissibleparalelmultipleimagingprobing
systemformerror
PForm.Cir.n×25.PMIPS, MPE
The limit value of PForm.Cir.n×25..PMIPS of the shape error of the multiimage detection system allowed by the technical specifications.
Note. The maximum allowable error of the shape of the multiimage detection system, PForm.Cir.n×25..PMIPS, MPE, can be expressed in one of the following three forms.
a) PForm.Cir.n×25.PMIPS, MPE=(A LP/K) and the smallest of B
b) PForm.Cir.n×25.PMIPS,MPE=(A LP/K)
c) PForm.Cir.n×25.PMIPS, MPE=B
Among them, A is a constant greater than zero, in μm, provided by the manufacturer; K is a dimensionless constant greater than zero, provided by the manufacturer; LP is the detection circle
The Euclidean distance between the center position and the reference position, in mm; B is the maximum allowable error provided by the manufacturer, in μm.
3.15
Parallel multiimage detection system size maximum allowable error maximumpermissibleparalelmultipleimagingprobing
systemsizeerror
PSize.Cir.n×25.PMIPS,MPE
The limit value of PSize.Cir.n×25..PMIPS of the size error of the multiimage detection system allowed by the technical specifications.
Note. The maximum allowable error of the multiimage detection system size, PSize.Cir.n×25..PMIPS, can be expressed in one of the following three forms.
a) PSize.Cir.n×25.PMIPS, MPE=(A LP/K) and the smallest of B
b) PSize.Cir.n×25.PMIPS,MPE=(A LP/K)
c) PSize.Cir.n×25.PMIPS, MPE=B
Among them, A is a constant greater than zero, in μm, provided by the manufacturer; K is a dimensionless constant greater than zero, provided by the manufacturer; LP is the detection circle
The Euclidean distance between the center position and the reference position, in mm; B is the maximum allowable error provided by the manufacturer, in μm.
3.16
Parallel multiimage detection system position maximum allowable error maximumpermissibleparalelmultipleimagingprobing
systemlocationerror
LDia.Cir.n×25.PMIPS, MPE
The limit value of the position error LDia.Cir.n×25..PMIPS of the multiimage detection system allowed by the technical specifications.
Note. The maximum allowable error of the position of the multiimage detection system, Ldia.Cir.n×25..PMIPS, MPE, can be expressed in one of the following three forms.
a) LDia.Cir.n×25.PMIPS, MPE=(A LP/K) and the smallest of B
b) LDia.Cir.n×25.PMIPS,MPE=(A LP/K)
c) LDia.Cir.n×25.PMIPS, MPE=B
Among them, A is a constant greater than zero, in μm, provided by the manufacturer; K is a dimensionless constant greater than zero, provided by the manufacturer; LP is the detection circle
The Euclidean distance between the center position and the reference position, in mm; B is the maximum allowable error provided by the manufacturer, in μm.
3.17
Maximum allowable error of nonparallel multiimage detection system shape maximumpermissiblenonparalelmultipleimaging
probingsystemformerror
PForm.Sph.n×25.NPMIPS,MPE
The limit value of PForm.Sph.n×25..NPMIPS of the shape error of the multiimage detection system allowed by the technical specifications.
Note. The maximum allowable error of the shape of the multiimage detection system, PForm.Sph.n×25..NPMIPS, MPE, can be expressed in one of the following three forms.
a) PForm.Sph.n×25.NPMIPS, MPE=(A LP/K) and the smallest of B
b) PForm.Sph.n×25.NPMIPS,MPE=(A LP/K)
c) PForm.Sph.n×25.NPMIPS, MPE=B
Among them, A is a constant greater than zero, in μm, provided by the manufacturer; K is a dimensionless constant greater than zero, provided by the manufacturer; LP is the detection ball
The Euclidean distance between the center position and the reference position, in mm; B is the maximum allowable error provided by the manufacturer, in μm.
3.18
Maximum allowable error of nonparallel multiimage detection system size maximumpermissiblenonparalelmultipleimaging
probingsystemsizeerror
PSize.Sph.n×25.NPMIPS, MPE
The dimensional error of the multiimage detection system allowed by the technical specifications is the limit value of PSize.Sph.n×25.NPMIPS.
Note. The maximum allowable error of the multiimage detection system size, PSize.Sph.n×25..NPMIPS, can be expressed in one of the following three forms.
a) PSize.Sph.n×25.NPMIPS, MPE=(A LP/K) and the smallest of B
b) PSize.Sph.n×25.NPMIPS,MPE=(A LP/K)
c) PSize.Sph.n×25.NPMIPS, MPE=B
Among them, A is a constant greater than zero, in μm, provided by the manufacturer; K is a dimensionless constant greater than zero, provided by the manufacturer; LP is the detection ball
The Euclidean distance between the center position and the reference position, in mm; B is the maximum allowable error provided by the manufacturer, in μm.
3.19
Maximum allowable position error of nonparallel multiimage detection system maximumpermissiblenonparalelmultipleimaging
probingsystemlocationerror
LDia.Sph.n×25.NPMIPS,MPE
The limit value of the position error LDia.Sph.n×25.NPMIPS of the multiimage detection system allowed by the technical specifications.
Note. The maximum allowable error of the position of the multiimage detection system, Ldia.Sph.n×25..NPMIPS, MPE, can be expressed in one of the following three forms.
a) LDia.Sph.n×25.NPMIPS, MPE=(A LP/K) and the smallest of B
b) LDia.Sph.n×25.NPMIPS, MPE=(A LP/K)
c) LDia.Sph.n×25.NPMIPS, MPE=B
Among them, A is a constant greater than zero, in μm, provided by the manufacturer; K is a dimensionless constant greater than zero, provided by the manufacturer; LP is the detection ball
The Euclidean distance between the center position and the reference position, in mm; B is the maximum allowable error provided by the manufacturer, in μm.
4 symbols
The symbols used in this section are shown in Table 1.
Table 1 Symbol
Symbol meaning
PForm.Cir.n×25.PMIPS parallel multiimage detection system shape error
PSize.Cir.n×25.PMIPS parallel multiimage detection system size error
LDia.Cir.n×25.PMIPS parallel multiimage detection system position error
Table 1 (continued)
Symbol meaning
PForm.Sph.n×25.NPMIPS nonparallel multiimage detection system shape error
PSize.Sph.n×25.NPMIPS nonparallel multiimage detection system size error
LDia.Sph.n×25.NPMIPS nonparallel multiimage detection system position error
PForm.Cir.n×25.PMIPS, MPE parallel multiimage detection system shape maximum allowable error
PSize.Cir.n×25.PMIPS, MPE parallel multiimage detection system size maximum allowable error
LDia.Cir.n×25.PMIPS, MPE parallel multiimage detection system position maximum allowable error
PForm.Sph.n×25.NPMIPS, MPE nonparallel multiimage detection system shape maximum allowable error
PSize.Sph.n×25.NPMIPS, MPE nonparallel multiimage detection system size maximum allowable error
LDia.Sph.n×25.NPMIPS, MPE nonparallel multiimage detection system position maximum allowable error
5 Requirements for metrological characteristics
5.1 General requirements
Before testing with reference to this section, you should first refer to GB/T 16857.7 for the coordinate measuring machine using each detection system separately.
Line detection error and length measurement error detection.
5.2 Error of multiimage detection system
Error PForm.Cir.n×25∷PMIPS, PSize.Cir.n×25∷PMIPS, LDia.Cir.n×25∷PMIPS and PForm.Sph.n×25∷NPMIPS, PSize.Sph.n×25∷NPMIPS,
LDia.Sph.n×25∷NPMIPS should not exceed the corresponding maximum allowable error PForm.Cir.n×25∷PMIPS,MPE, PSize.Cir.n×25∷PMIPS,MPE,
LDia.Cir.n×25.PMIPS, MPE and PForm.Sph.n×25.NPMIPS, MPE, PSize.Sph.n×25.NPMIPS, MPE, LDia.Sph.n×25.NPMIPS, MPE. These maximum allowable errors
Expression of difference.
Acceptance testing, specified by the manufacturer;
Reinspection and testing shall be specified by the user.
The error and its corresponding maximum allowable error are expressed in microns (μm).
5.3 Environmental conditions
The allowable extreme values of environmental conditions, including the temperature, humidity and vibration of the coordinate measuring machine installation site that affect the measurement work, are specified as follows.
Acceptance testing, specified by the manufacturer;
Reinspection and testing shall be specified by the user.
In both cases, the user can arbitrarily choose the environmental conditions within the allowable extreme value range.
In the acceptance test, the user has the responsibility to provide the coordinate measuring machine with the environment specified in the manufacturer's technical indicators. If the environment is not in compliance
Fan, can not be required to verify the maximum allowable error or maximum allowable difference in this section.
5.4 Operating conditions
For the inspections specified in Chapter 6, the CMM should be operated in accordance with the procedures given in the manufacturer's operating manual, and the instructions in the operating manual should be followed.
Specifications, including.
Machine start/warm up;
 All detection systems tested should meet their rated working conditions;
Cleaning procedures for detection system and standard equipment;
Calibration of the detection system;
 If specified by the manufacturer, the standard device should be installed in the location specified in the operation manual.
Before calibration of the detection system, all key components of the detection system, such as lenses, mirrors, standards, etc., should be cleaned to remove possible effects.
Residues from measurement or test results.
During the calibration and detection of the detection system, it should be ensured that the detection system basically reaches thermal equilibrium.
6 Acceptance test and reinspection test
6.1 Overview
The acceptance test shall be carried out in accordance with the specifications and procedures specified by the manufacturer, which shall comply with the relevant requirements of this part; reinspection and testing
It should be implemented in accordance with the specifications specified by the user and the procedures specified by the manufacturer.
6.2 Principle
The detection method in this chapter is used to detect the maximum allowable error of the multiimage detection system. Each detection system shall be specified by the equipment manufacturer
The operation of all detection systems should comply with the normal operating procedures of the coordinate measuring machine manufacturer.
The principle of the detection method is.
a) Use the calibrated detection circle to determine that the measurement characteristics of the coordinate measuring machine equipped with the parallel multiimage detection system meet the specified shape
Maximum allowable error of shape PForm.Cir.n×25.PMIPS, maximum allowable error of size PSize.Cir.n×25.PMIPS, maximum allowable error of position
Poor LDia.Cir.n×25.PMIPS;
b) Use the calibrated detection ball to determine that the measurement characteristics of the coordinate measuring machine equipped with a nonparallel multiimage detection system meet the specified requirements
Maximum allowable error of shape PForm.Sph.n×25.NPMIPS, maximum allowable error of size PSize.Sph.n×25.NPMIPS, maximum allowable error of position
Poor LDia.Sph.n×25.NPMIPS.
For a multidetection axis coordinate measuring machine, if the measurement space of each detection axis is highly overlapped, the detection process is the same as the configuration on a single detection axis
The detection process of the coordinate measuring machine of multiple detection systems is the same. If the measurement space overlap is small, the detection of each detection axis should be tested separately.
测系统。 Measurement system.
For multidetection axis coordinate measuring machine, it is recommended to detect the error of one detection system on each detection axis with reference to GB/T 16857.7 at least.
difference. If the measurement space of each detection axis overlaps greatly, it can be negotiated. Refer to GB/T 16857.7 to detect the error of only one detection system.
But the number of detection positions should be increased.
6.3 Parallel multiimage detection system
6.3.1 Measuring equipment
The detection circle is used as the physical standard, and its nominal diameter should be no less than 10mm and no more than 51mm. If the image detection system
In the same field of view measurement mode, the diameter of the detection circle should be 10% to 66% of the diagonal of the field of view of the detection system.
The size and shape of the detection circle should be calibrated. Since the shape and size deviation will affect the test results,
When complying with relevant specifications, GB/T 18779.1 should be used to consider the influence of the size and shape of the detection circle. It is recommended that the shape error of the detection circle should not exceed
Passed PForm.Cir.n×25..PMIPS, 20% of MPE.
6.3.2 Procedure
Place the standard in 3 different positions for testing. One of the positions is close to the calibration position, and the other two positions are off the calibration
Set as far as possible, but the distance does not exceed 50% of the CMM stroke. The user can choose the position of the standard arbitrarily within the allowable range.
For each of the n parallel image detection systems, the detection circle is measured at each of the 3 detection positions. 25 for each circle
Points, these points should be approximately evenly distributed within the angle range (see ISO 103607.2011).
6.3.3 Test data analysis
Analyze the detection data of 3 positions separately.
At each position, for all n×25 points obtained by n parallel image detection systems, the unconstrained least square method is used to fit the circle, and then
To 1 fitted circle. Calculate the distance from all n×25 measurement points to the center of the fitted circle, and the range (RmaxRmin) of all distances is the test
The shape error of the measured position PForm.Cir.n×25.PMIPS. The absolute value of the difference between the diameter of the fitting circle and the calibration value of the detection circle diameter is the detection
The size error of the position is PSize.Cir.n×25.PMIPS.
At each position, 25 measurement points of n parallel image detection systems are respectively fitted to the circle by the unconstrained least square method, and a total of
n fitting circles, the smallest circumscribed circle diameter including the centers of all fitting circles is the position error LDia.Cir.n×25.PMIPS of the detection position.
6.4 Nonparallel multiimage detection system
6.4.1 Measuring equipment
The detection ball is used as the physical standard, and its nominal diameter should be no less than 10mm and no more than 51mm. If the image detection system
In the same field of view measurement mode, the diameter of the detection ball should be 10% to 66% of the diagonal of the field of view of the detection system.
The size and shape of the detection ball should be calibrated. Since the shape and size deviation will affect the test results,
When complying with relevant specifications, GB/T 18779.1 should be used to consider the influence of the size and shape of the detection circle. It is recommended that the shape error of the detection ball is not exceeded
Passed PForm.Sph.n×25.NPMIPS, 20% of MPE.
6.4.2 Procedure
Place the standard in 3 different positions for testing. One of the positions is close to the calibration position, and the other two positions are off the calibration
Set as far as possible, but not more than 50% of the travel of the coordinate measuring machine. The user can choose the position of the standard arbitrarily within the allowable range.
For each of the n nonparallel multiimage detection systems, measure parallel to the image detection system at each of the 3 detection positions
The great circle of the detection ball of the system measurement plane. Take 25 points for each circle, these points should be approximately uniformly distributed within the angle range (see ISO 103607.
2011).
The image detection system equipped with universal probe can be regarded as a kind of nonparallel multiimage detection system. The detection system is in 5 different
Measure the shape, size and position of the detection ball at each corner position, measure 25 points of a large circle of the detection ball, 5 points
There are 125 points in total. The five corner positions include an angle parallel to the axis of the probe and an angle perpendicular to the axis of the probe.
It is composed of 4 angles of 90° in the plane. In some CMM configurations, some of the above 5 corner positions may be difficult
To achieve or not to achieve. In this case, the corner position can be rotated by ±90° relative to the Xaxis or Yaxis of the coordinate measuring machine configuration.
6.4.3 Test data analysis
Analyze the detection data of 3 positions separately.
At each position, for all n×25 points obtained by the nonparallel image detection system, the unconstrained least squares method is used to fit the ball,
Get 1 fit ball. Calculate the distance from all n×25 measurement points to the center of the fitted sphere, and the range (RmaxRmin) of all distances is
The shape error of the detection position is PForm.Sph.n×25..NPMIPS. The absolute value of the difference between the diameter of the fitting ball and the calibration value of the detection ball diameter is the
The size error of the detection position is PSize.Sph.n×25.NPMIPS.
At each position, the 25 measurement points of n nonparallel image detection systems are respectively fitted to the circle by the unconstrained least square method.
Obtain n fitting circles, and the smallest circumscribed sphere diameter including the centers of all fitting circles is the position error LDia.Sph.n×25.NPMIPS of the detection position.
7 Acceptance determination
7.1 Acceptance test
If the following conditions are met, the multiimage detection system coordinate measuring machine has passed the acceptance test.
a) The shape error PForm.Cir.n×25∷PMIPS (PForm.Sph.n×25∷NPMIPS) of the multiimage detection system measured at the 3 detection positions is not
Greater than the maximum allowable error specified by the manufacturer PForm.Cir.n×25.PMIPS, MPE (PForm.Sph.n×25.. NPMIPS, MPE), and in accordance with
ISO 142531 considers measurement uncertainty.
b) The size error PSize.Cir.n×25∷PMIPS (PSize.Sph.n×25∷NPMIPS) of the multiimage detection system measured at the 3 detection positions is not greater than
The maximum allowable error PSize.Cir.n×25∷PMIPS, MPE (PSize.Sph.n×25∷NPMIPS, MPE) specified by the manufacturer, and in accordance with ISO 142531
Consider the measurement uncertainty.
c) The position error LDia.Cir.n×25∷PMIPS (LDia.Sph.n×25∷NPMIPS) of the multiimage detection system measured at the 3 detection positions is not large
In accordance with the maximum allowable error LDia.Cir.n×25.PMIPS, MPE (LDia.Sph.n×25.. NPMIPS, MPE) specified by the manufacturer, and in accordance with ISO 142531
Consider measurement uncertainty.
If it has passed all relevant tests and its characteristics are not qualified, all measuring equipment should be thoroughly checked for any dust that affects the measurement results.
Dust, dirt or problems caused by the operator should also be checked to confirm that the coordinate measuring machine, standard device and all detection system components are in thermal equilibrium.
After correcting all the problems, from the beginning of the calibration of the detection system to the same target detection point, the detection can only be repeated once.
7.2 Reinspection test
If the following conditions are met, the multiimage detection system coordinate measuring machine has passed the acceptance test.
a) The shape error PForm.Cir.n×25∷PMIPS (PForm.Sph.n×25∷NPMIPS) of the multiimage detection system measured at the 3 detection positions is not
It is greater than the maximum allowable error specified by the user PForm.Cir.n×25.PMIPS, MPE (PForm.Sph.n×25.NPMIPS, MPE), and in accordance with
ISO 142531 considers measurement uncertainty.
b) The size error PSize.Cir.n×25∷PMIPS (PSize.Sph.n×25∷NPMIPS) of the multiimage detection system measured at the 3 detection positions is not greater than
The maximum allowable error PSize.Cir.n×25∷PMIPS, MPE (PSize.Sph.n×25∷NPMIPS, MPE) specified by the user, and in accordance with ISO 142531
Consider the measurement uncertainty.
c) The position error LDia.Cir.n×25∷PMIPS (LDia.Sph.n×25∷NPMIPS) of the multiimage detection system measured at the 3 detection positions is not large
In accordance with the maximum allowable error LDia.Cir.n×25.PMIPS, MPE (LDia.Sph.n×25..NPMIPS, MPE) specified by the user, and in accordance with ISO 142531
Consider measurement uncertainty.
If it has passed all relevant tests and its characteristics are not qualified, all measuring equipment should be thoroughly checked for any dust that affects the measurement results.
Dust, dirt or problems caused by the operator should also be checked to confirm that the coordinate measuring machine, standard device and all detection system components are in thermal equilibrium.
After correcting all the problems, from the beginning of the calibration of the detection system to the same target detection point, the detection can only be repeated once.
8 Application
8.1 Acceptance inspection
When the manufacturer and the user have signed a contract for purchase, maintenance, repair, modification or upgrade, the acceptance test specified in this section can be used
To verify the characteristics of the coordinate measuring machine system equipped with a multiimage detection system, the manufacturer and the user agree to determine the maximum allowable error
And the maximum allowable difference.
8.2 Reinspection test
The reinspection test specified in this section can be used in the internal quality assurance system of the organization to verify the coordinates of the multiimage detection system
For the system performance of the measuring machine, the user shall determine the maximum allowable error and maximum allowable difference according to the applicable and actual conditions.
8.3 Intermediate inspection
In the internal quality assurance system of the organization, a simplified reinspection test is periodically used to check whether the coordinate measuring machine complies with 7.2.
The specified maximum allowable error and maximum allowable difference requirements.
It is recommended to check the measurement performance of the coordinate measuring machine regularly, and after any event that may seriously affect the measurement performance (such as the occurrence of
Collision, replacement of coordinate measuring machine components) The measurement performance of the whole machine is immediately tested.
9 Description of product files and data pages
Table 2 shows the symbols and corresponding marks that can be used in product documents, drawings, data sheets, etc. Most symbols have been simplified
Converted into subscript text, thereby improving readability and clarity.
Table 2 Symbols and corresponding marks such as product documents, drawings, data sheets, etc.
The symbols used in this section correspond to the logo
PForm.Cir.n×25∷PMIPS P[Form.Cir.n×25∷PMIPS]
PSize.Cir.n×25∷PMIPS P[Size.Cir.n×25∷PMIPS]
LDia.Cir.n×25∷PMIPS L[Dia.Cir.n×25∷PMIPS]
PForm.Sph.n×25∷NPMIPS P[Form.Sph.n×25∷NPMIPS]
PSize.Sph.n×25∷NPMIPS P[Size.Sph.n×25∷NPMIPS]
LDia.Sph.n×25∷NPMIPS L[Dia.Sph.n×25∷NPMIPS]
PForm.Cir.n×25∷PMIPS, MPE MPE(P[Form.Cir.n×25∷PMIPS])
PSize.Cir.n×25∷PMIPS, MPE MPE(P[Size.Cir.n×25∷PMIPS])
LDia.Cir.n×25∷PMIPS, MPE MPE(L[Dia.Cir.n×25∷PMIPS])
PForm.Sph.n×25∷NPMIPS, MPE MPE(P[Form.Sph.n×25∷NPMIPS])
PSize.Sph.n×25∷NPMIPS, MPE MPE(P[Size.Sph.n×25∷NPMIPS])
LDia.Sph.n×25∷NPMIPS, MPE MPE(L[Dia.Sph.n×25∷NPMIPS])
Appendix A
(Informative appendix)
Relationship with GPS matrix model
A.1 Overview
For the complete details of the GPS matrix model, see GB/T 20308.
The GPS matrix model in GB/T 20308 summarizes the GPS system, and this part is a part of the system. Unless otherwise stated
Obviously, the GPS basic rules given in GB/T 4249 are applicable to this part, and the default rules given in GB/T 18779.1 are applicable in accordance with this part.
Developed specifications.
A.2 Information about standards and their use
This section specifies the methods for acceptance testing and reinspection testing of coordinate measuring machines equipped with multiimage detection systems.
A.3 Position in GPS matrix model
This part is a general GPS standard. The rules and principles given in this section apply to all marked solid points in the GPS matrix (·)
part. See Table A.1.
Table A.1 GPS standard matrix model
Chain link
ABCDEFG
Symbols and labeling elements require element characteristics to comply with and not to comply with the calibration of measuring equipment
size·
distance·
shape·
direction·
position·
beat
Contour surface structure
Regional surface structure
Surface defects
A.4 Related standards
The standards involved in the standard chain shown in Table A.1 are related standards.
references
[1] GB/T 16857.12002 Product Geometrical Quantity Technical Specification (GPS) Coordinate Measuring Machine Acceptance Test and Retest Test
Part 1.Vocabulary (eqvISO 103601.2000)
[2] GB/T 16857.22017 Product Geometric Technical Specification (GPS) Coordinate Measuring Machine Acceptance Test and Reinspection Test No.
Part 2.Coordinate measuring machine for measuring linear dimensions (ISO 103602.2009, IDT)
[3] GB/T 42492018 Product Geometric Technical Specification (GPS) Basic Concepts, Principles and Rules
[4] GB /Z 203082006 Product Geometric Technical Specification (GPS) General Rules
