Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 5) (First Revision) which is identical with ISO 10360-5 : 2010 ‘Geometrical product specifications (GPS) — Acceptance and reverification tests for coordinate measuring machines (CMM) — Part 5: CMMs using single and multiple stylus contacting probing systems’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Engineering Metrology Sectional Committee and approval of the Production and General Engineering Division Council.

This standard was originally published in 2006. The first revision of this standard has been undertaken to align it with the latest version of ISO 10360-5 : 2010.

The acceptance and reverification tests described in this part of the standard are applicable to coordinate measuring machines (CMMs) that use contacting probes, with or without multiple styli or multiple articulated-probe positions, when measuring a workpiece.

Experience has shown that the multi-stylus errors calculated using this part of the standard are significant and, at times, the dominant errors in the CMM. Owing to the virtually infinite variety of modern CMM probing system configurations, the tests specified by this part of the standard have been limited to providing a testing format only. The tests are intended to provide information on the ability of a CMM to measure a feature or features, using a contacting probe and, when relevant, using multiple styli, multiple probes or multiple articulated-probe positions.

The situations to which they are applicable include

a) single-stylus probing systems,

b) multiple styli connected to the CMM probe (e.g. a star),

c) installations using an articulating probing system (motorized or manual) that can be prequalified,

d) installations using a repeatable probe-changing system,

e) installations using a repeatable stylus-changing system, and

f) multi-probe installations.

It is believed that the procedures given in this part of the standard will be helpful in identifying CMM system uncertainty components for specific measurement tasks, and that the user will be able to reduce errors by removing contributing elements such as long probe extensions and styli, then retesting the new configuration set.

The tests in this part of the standard are sensitive to many errors attributable to both the CMM and the probing system, and are to be performed in addition to the length-measuring tests given in IS 15635 (Part 2).

The primary objective is to determine the practical performance of the complete CMM and probing system. Therefore, the tests are designed to reveal measuring errors which are likely to occur when such a combined system is used on real workpieces, e.g. errors generated by the interaction between large probe-tip-offset lengths and uncorrected CMM rotation errors. The errors found here differ from those found in the EL tests in IS 15635 (Part 2) : 2014, 6.5, because with multiple styli the net CMM travel may be very different from the measured length. See Annex C for more information.

This Indian Standard is published in several parts. The other parts in this series are:

Part 1 Vocabulary

Part 2 CMMs used for measuring linear dimensions

Part 3 CMMs with the axis of a rotary table as the fourth axis

Part 4 CMMs used in scanning measuring mode

Part 6 Estimation of errors in computing Gaussian associated features

Part 7 CMMs equipped with imaging probing systems

Part 8 CMMs with optical distance sensors

Part 9 CMMs with multiple probing systems

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.