ISO 3070-2:2016 工作機械—水平スピンドルを備えたボーリングおよびフライス盤の精度をテストするためのテスト条件—パート2：X軸に沿って可動コラムを備えたマシン（フロアタイプ） | ページ 2

Foreword

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The committee responsible for this document is 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 3070-2:2007), which has been technically revised.

This corrected version of ISO 3070-2:2016 incorporates the following corrections:

• the Persian language nomenclature given in Table C.1 and Table C.2 has been corrected.

ISO 3070 consists of the following parts under the general title Machine tools — Test conditions for testing the accuracy of boring and milling machines with horizontal spindle:

• Part 1: Machines with fixed column and table movable on a crossslide
• Part 2: Machines with movable column along the X-axis (floor type)
• Part 3: Machines with movable column along the Z-axis (T-bed type)

Introduction

Most horizontal spindle boring and milling machines fall into the following three categories characterized by their particular configuration:

• a) machines with fixed column and table movable on a cross slide;
• b) machines with movable column along the X-axis (floor type);
• c) machines with movable column along the Z-axis (T-bed type).

The object of ISO 3070 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.

This revision of this part of ISO 3070 provides additional information on tests to be performed and specifies new tolerances to better reflect the current technology.

Machining tests have been excluded from this revision of this part of ISO 3070 considering that such tests can typically be the object of agreement between manufacturer/supplier and user, (possibly) including tests that are specified in ISO 10791-7.

1 Scope

This part of ISO 3070 specifies, with reference to ISO 230-1, ISO 230-7 and ISO 230-2, geometric tests, spindle tests and tests for checking the accuracy and repeatability of positioning by numerical control of horizontal spindle boring and milling machines having a movable column along the X-axis and also specifies the applicable tolerances corresponding to general-purpose, normal accuracy machines.

This type of machines are usually provided with sliding boring spindles and can be provided with universal spindle heads of the following types, whose test conditions are covered by ISO 17543-1:

• fixed or indexable heads, with accessory spindle(s) square to the Z-axis, with or without one spindle parallel to the Z-axis;
• 45° split indexable heads, with mechanical indexing of the different angular positions of the two bodies (e.g. Hirth couplings);
• 45° split continuous heads, provided with continuous positioning of the two numerically controlled axes;
• swivel heads, with two numerically controlled rotary axes perpendicular to each other.

Test conditions for accessory facing heads are specified in Annex B.

This part of ISO 3070 concerns machines having movement of the column on the bed (X-axis), vertical movement of the spindle head on the column (Y-axis), axial movement of the ram (Z-axis), axial movement of the boring spindle (W-axis), and, in most cases, one or more tables moving on a bed parallel to the spindle (R-axis) and rotating around a vertical axis (B-axis).

This part of ISO 3070 deals only with the verification of the accuracy of the machine. It does not apply to the operational testing of the machine (e.g. vibration, abnormal noise, stick-slip motion of components) nor to machine characteristics (e.g. speeds, feeds), as such checks are generally carried out before testing the accuracy.

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.

3 Terms and definitions

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

Bibliography