ISO 3875:2020 工作機械—外部円筒形センターレス研削盤の試験条件—精度の試験 | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 39, Machine tools, Subcommittee SC 2, Test conditions for metal cutting machine tools.

This fourth edition cancels and replaces the third edition (ISO 3875:2004), which has been technically revised. The main changes compared to the previous edition are as follows:

• the machine sizes (thickness of grinding wheel) covered have been extended more than 300 mm from ISO 3875:2004 for test M1 since machine size in the industry increased;
• machine configurations have been classified into three types to cover major configurations in the markets;
• references to ISO 230-1 and ISO 230-2 have been revised;
• a new machine test for Z-directional grinding wheel slide (straightness and positioning) has been introduced.

Introduction

The purpose of this document is to standardize methods of testing the accuracy of general purpose and normal accuracy external cylindrical centreless grinding machines. The primary function of such machines is to provide cylindrical workpieces. This document specifies the tests to verify the geometric accuracy of the machine to achieve this primary function.

1 Scope

The document specifies, with reference to ISO 230-1 and ISO 230-2, geometric tests, machining tests and tests for accuracy and repeatability of positioning axes on general purpose and normal accuracy manually and numerically controlled (NC) external cylindrical centreless grinding machines. It also specifies the applicable tolerances corresponding to the above-mentioned tests.

This document deals only with the verification of accuracy of the machine. It does not apply to the testing of the machine operation (vibrations, abnormal noise, stick-slip motion of components, etc.) nor to machine characteristics (such as speeds, feeds, etc.), which are generally checked before testing of machine accuracy.

This document provides the terminology used for the principal components of the machine and the designation of the axes with reference to ISO 841.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography