ISO 10791-1:2015 マシニングセンターの試験条件—パート1：水平スピンドル（水平Z軸）を備えた機械の幾何学的試験 | ページ 2

Foreword

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The committee responsible for this document is ISO/TC 39, Machine tools, SC 2, Test conditions for metal cutting machine tools.

This second edition cancels and replaces the first edition (ISO 10791-1:1998), which has been technically revised.

ISO 10791 consists of the following parts, under the general title Test conditions for machining centres:

• Part 1: Geometric tests for machines with horizontal spindle (horizontal Z-axis)
• Part 2: Geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis (vertical Z-axis)
• Part 3: Geometric tests for machines with integral indexable or continuous universal heads (vertical Z-axis)
• Part 4: Accuracy and repeatability of positioning of linear and rotary axes
• Part 5: Accuracy and repeatability of positioning of work-holding pallets
• Part 6: Accuracy of speeds and interpolations
• Part 7: Accuracy of finished test pieces
• Part 8: Evaluation of contouring performance in the three coordinate planes
• Part 9: Evaluation of the operating times of tool change and pallet change
• Part 10: Evaluation of the thermal distortions

Introduction

A machining centre is a numerically controlled machine tool capable of performing multiple machining operations, including milling, boring, drilling, and tapping, as well as automatic tool changing from a magazine or similar storage unit in accordance with a machining program.

The object of ISO 10791 (all parts) is to supply information as wide and comprehensive as possible on tests which can be carried out for comparison, acceptance, maintenance, or any other purpose deemed necessary by user or manufacturer/supplier. ISO 10791 specifies, with reference to the relevant parts of ISO 230, several families of tests for machining centres with horizontal spindle, standing alone or integrated in flexible manufacturing systems.

This part of ISO 10791 also establishes the tolerances for the test results corresponding to general purpose and normal accuracy machining centres.

This part of ISO 10791 is also applicable, totally or partially, to other numerically controlled machines, when their configuration, components, and movements are compatible with the tests described herein.

Accessory spindle heads, forming the object of Annexes A through C in the first edition of this part of ISO 10791, are now covered by the more general ISO 17543-1, as they are not only used on machining centres.

In this edition of ISO 10791-1, the test of the table flatness (formerly G15) has been deleted for several reasons, among which are the following:

• the table surface is not normally used as a reference for the location of the workpiece;
• sometimes, the machine is supplied with some fixtures already mounted on the table;
• sometimes, the machine is provided with a receiver where several pallets can be mounted;
• for tests made during the working life of the machine, the surface might no longer be suitable for accurate measurements, mostly on large machines.

1 Scope

This part of ISO 10791 specifies, with reference to ISO 230-1, the geometric tests for machining centres (or other numerically controlled machines, where applicable) with horizontal spindle (i.e. horizontal Z-axis).

This part of ISO 10791 applies to machining centres having three numerically controlled linear axes (X-axis up to 5 000 mm length, Y-axis up to 3 200 mm length, and Z-axis up to 2 000 mm length), but refers also to supplementary movements, such as those of rotary, tilting, and swivelling tables. Movements other than those mentioned are considered as special features and the relevant tests are not included in this part of ISO 10791.

This part of ISO 10791 takes into consideration in Annexes A through D four possible types of tables, fixed and rotary, as hereunder described:

• Annex A: horizontal non-rotating tables;
• Annex B: tables rotating around a vertical B’-axis;
• Annex C: tables rotating around a vertical B’-axis and tilting around a horizontal A’-axis;
• Annex D: tables rotating around a horizontal A’-axis and swivelling around a vertical B’-axis.

This part of ISO 10791 does not consider accessory spindle heads, which are covered by ISO 17543-1:— ¹ .

This part of ISO 10791 deals only with the verification of geometric accuracy of the machine and does not apply to the testing of the machine operation, which should generally be checked separately. Tests not concerning the pure geometric accuracy of the machine are dealt with in other parts of ISO 10791, as listed in the Foreword.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

Bibliography