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GB/T 34880.1-2025 English PDF

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GB/T 34880.1-2025: Test conditions for 5-axis simultaneous machining centers - Part 1: Testing of the accuracy for horizontal machine
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GB/T 34880.1: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 34880.1-2025English1559 Add to Cart 10 days [Need to translate] Test conditions for 5-axis simultaneous machining centers - Part 1: Testing of the accuracy for horizontal machine Valid GB/T 34880.1-2025
GB/T 34880.1-2017English1319 Add to Cart 10 days [Need to translate] Test conditions for the 5-axis simultaneous machining centers -- Part 1: Testing of the accuracy for horizontal machine Valid GB/T 34880.1-2017

Standard similar to GB/T 34880.1-2025

GB/T 34880.3   GB/T 34880.2   GB/T 34880.3   

Basic data

Standard ID GB/T 34880.1-2025 (GB/T34880.1-2025)
Description (Translated English) Test conditions for 5-axis simultaneous machining centers - Part 1: Testing of the accuracy for horizontal machine
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J54
Classification of International Standard 25.040.10
Word Count Estimation 78,711
Date of Issue 2025-08-01
Date of Implementation 2026-02-01
Older Standard (superseded by this standard) GB/T 34880.1-2017
Issuing agency(ies) State Administration for Market Regulation, Standardization Administration of China

GB/T 34880.1-2025: Test conditions for 5-axis simultaneous machining centers - Part 1: Testing of the accuracy for horizontal machine


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ICS 25.040.10 CCSJ54 National Standard of the People's Republic of China Replaces GB/T 34880.1-2017 Five-axis machining center inspection conditions Part 1.Accuracy testing of horizontal machine tools Released on August 1, 2025 Implementation on February 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General 1 4.1 Units of measurement 1 4.2 Implementation Standard 2 4.3 Inspection sequence 2 4.4 Inspection Item 2 4.5 Inspection Tools 2 4.6 Tool Center Point Following Function (RTCP) Accuracy Test 2 4.7 Type of test piece 2 4.8 Working accuracy inspection 3 4.9 Software Compensation 3 4.10 Position of non-test axis 3 4.11 Simplified Figure 3 4.12 Pallet 3 4.13 Inspection Environmental Conditions 3 4.14 Machine tool structure and motion axis naming 3 4.15 Mark 4 4.16 Minimum tolerance 4 5 Geometric accuracy inspection 7 5.1 Straightness Error of Linear Axis Motion 7 5.2 Angular Error in Linear Axis Motion10 5.3 Perpendicularity Error Between Two Linear Axis Motions 13 5.4 Spindle Error 16 5.5 Flatness error of worktable or pallet 21 5.6 Additional axes parallel to the Z axis 22 6 Positioning accuracy and repeatability test of CNC axis 26 6.1 Positioning accuracy and repeatability of linear axes 26 6.2 Positioning accuracy and repeatability of the rotary axis 27 7 Working accuracy inspection 28 Appendix A (Normative) AB Additional Geometric Accuracy Test for Swinging Rotary Table Machine Tools 44 Appendix B (Normative) Additional Geometric Accuracy Test for Rotary Swinging Spindle Head Machine Tools 65 Figure 1 Typical structure of AB swing rotary table machine tool Figure 5 Figure 2 Typical structure of rotary swing spindle head machine tool Figure 6 Figure 3 Specimen M1-80 (P grade) 28 Figure 4 Specimen M1-160 (P grade) 29 Figure 5 Specimen M1-320 (P grade) 30 Figure 6 Specimen M1-80 blank 31 Figure 7 Specimen M1-160 blank 31 Figure 8 Specimen M1-320 blank 32 Figure 9 Specimen M3 installation 36 Figure 10 Specimen M3 (P grade) 36 Figure 11 Specimen M4-80 (P grade) 38 Figure 12 Specimen M4-160 (P grade) 39 Figure 13 Specimen M4-320 (P grade) 39 Figure 14 Test piece M4 blank 40 Table 1 Type of test piece 2 Preface This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is part 1 of GB/T 34880 "Test conditions for five-axis machining centers". GB/T 34880 has been published as follows part. --- Part 1.Accuracy inspection of horizontal machine tools; --- Part 2.Vertical machine tool accuracy inspection; --- Part 3.Technical conditions. This document replaces GB/T 34880.1-2017 "Test conditions for five-axis machining centers Part 1.Precision test conditions for horizontal machine tools" Compared with GB/T 34880.1-2017, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) The scope has been changed (see Chapter 1, Chapter 1 of the.2017 edition); b) The requirements of the implementation standard have been changed (see 4.2, 4.2 of the.2017 edition); c) Changed the requirements for inspection tools (see 4.5, 4.5 of the.2017 edition); d) Added the requirements for tool center point following function (RTCP) accuracy inspection (see 4.6); e) The requirements for the type of test piece have been changed (see 4.7, 4.6 of the.2017 edition); f) Changed the requirements for software compensation (see 4.9, 4.10 of the.2017 edition); g) The content of the diagram has been changed (see 4.11, 4.8 of the.2017 edition); h) Added requirements for the position of non-test axes (see 4.10); i) The requirements for pallets have been changed (see 4.12, 4.9 of the.2017 edition); j) Added requirements for inspection environmental conditions (see 4.13); k) The minimum tolerance requirements have been changed (see 4.16, 4.13 of the.2017 edition); l) Modified the tolerance requirements and inspection methods for all inspection items, and added the tolerance requirements for M-class machine tools (see Chapter 5, Appendix A, AG1 to AG7, and Appendix B, Chapter 5 and Appendix A of the.2017 edition); m) Added additional geometric accuracy inspection requirements for AB swing rotary table machine tools (see AG8 to AG21 in Appendix A). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Machinery Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Metal Cutting Machine Tools (SAC/TC22). This document was drafted by. General Technology Group Machine Tool Engineering Research Institute Co., Ltd., Sichuan Pushiningjiang Machine Tool Co., Ltd., Wuhan Heavy Industry China Machine Tool Group Co., Ltd., Shenyang Machine Tool Co., Ltd., Beijing Machine Tool Research Institute Co., Ltd., Shanghai Aerospace Precision Machinery Research Institute, General Technology Group Kunming Machine Tool Co., Ltd., General Technology Group Dalian Machine Tool Co., Ltd., National Machine Tool Quality Supervision and Inspection Center, Zhejiang Keda Machine Tool Co., Ltd., Kede CNC Co., Ltd., and Beijing Gongyan Precision Machinery Co., Ltd. The main drafters of this document are. Huang Zuguang, Chen Yanyan, Xue Ruijuan, Xu Haoli, He Chunshu, Guo Guoqiang, Miao Dan, Wang Jing, Chen Hongjun, Yu Chunping, Dai Yuhong, Tan Zhi, Liang Shuang, Zhang Wei, Chen Wei, Meng Yongling, Zhang Yan, Zhou Zhigao, Kong Xiangzhi, Wang Xiao, Zhang Ligang, and Li Ke. This document was first published in.2017 and this is the first revision.

introduction

The five-axis machining center has the advantages of processing complex surfaces, improving processing accuracy and efficiency, and its precision performance directly affects the product Quality and processing capabilities. With the advancement of technology and the improvement of processing technology, the performance of five-axis linkage machining centers is also constantly improving. In order to adapt to our This document has been revised to reflect the demand for technological advancement of five-axis machining centers driven by the high-end development of China's machine tools and the transformation and upgrading of its manufacturing industry. GB/T 34880 consists of three parts. --- Part 1.Horizontal machine tool precision inspection. The purpose is to establish the inspection requirements for the factory inspection of five-axis horizontal machining centers. Projects and requirements. --- Part 2.Vertical machine tool precision inspection. The purpose is to establish the inspection requirements for the five-axis linkage vertical machining center during factory inspection. Projects and requirements. --- Part 3.Technical conditions. The purpose is to establish the test to ensure the performance and quality of the five-axis linkage machining center during the manufacturing process Projects and corresponding requirements. This document is the first part of GB/T 34880, which mainly specifies the geometric accuracy, positioning accuracy and weight of five-axis horizontal machining centers. The inspection requirements, inspection methods and corresponding tolerances of positioning accuracy and working accuracy can be used for five-axis joint machining of ordinary and precision grades. Provide basis and guidance for the design, manufacture, inspection and acceptance of automatic machining centers. Five-axis machining center inspection conditions Part 1.Accuracy testing of horizontal machine tools

1 Scope

This document specifies the geometric accuracy, positioning accuracy and repeatability of the CNC axis, and working accuracy of the five-axis horizontal machining center. Inspection requirements, inspection methods and corresponding tolerances. This document is applicable to ordinary (P-level) and precision (M-level) five-axis linkage horizontal machining centers with linear axis travel up to 2500mm (hereinafter referred to as "machine tools") design, manufacture, inspection and acceptance.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 17421.1-2023 General principles for inspection of machine tools Part 1.Geometric accuracy of machine tools under no-load or quasi-static conditions GB/T 17421.2-2023 General rules for inspection of machine tools Part 2.Determination of positioning accuracy and repeatability of CNC axes GB/T 17421.7-2016 General Rules for Inspection of Machine Tools Part 7.Geometric Accuracy of Rotary Axis GB/T 19660-2005 Industrial automation systems and integrated machine tool numerical control coordinate systems and motion nomenclature GB/T 25379.1-2010 General components for machine tools - Workpiece pallets - Part 1.Workpiece pallets with nominal dimensions up to 800 mm Row pallet GB/T 25379.2-2010 General machine tool components - Workpiece pallets - Part 2.Workpieces with nominal dimensions greater than 800 mm Traveling pallet GB/T 39953-2021 RTCP precision test for five-axis machining centers GB/T 39967-2021 Accuracy test of S-shaped test pieces for five-axis machining centers

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 It has at least five CNC axes, including three linear axes (X, Y, Z) and two rotary axes (A, B, C in any combination), which can realize A horizontal machining center with five axes simultaneously participating in interpolation motion.

4 General

4.1 Units of measurement All linear dimensions, errors and corresponding tolerances in this document are in millimeters (mm); angular dimensions are in degrees (°); The error and the corresponding tolerance are expressed as a ratio, but in some cases they can be expressed in microradians (μrad) or arc seconds (″). The conversion relationship is as follows.

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