GB/T 34880.2-2025Test conditions for 5-axis simultaneous machining centers — Part 2: Testing of the accuracy for vertical machine (English PDF)

Foreword

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 2 of GB/T 34880 "Test conditions for five-axis machining centers". GB/T 34880 has published the following 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 34880.2-2017 "Test conditions for five-axis machining centers Part 2: Precision test conditions for vertical machine tools" Compared with GB/T 34880.2-2017, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) The requirements of the implementation standard have been changed (see 4.2, 4.2 of the 2017 edition);

b) Changed the requirements for inspection tools (see 4.5, 4.5 of the 2017 edition);

c) Added the requirements for tool center point following function (RTCP) accuracy inspection (see 4.6);

d) The requirements for the type of test piece have been changed (see 4.7, 4.6 of the 2027 edition);

e) Changed the requirements for software compensation (see 4.9, 4.10 of the 2017 edition);

f) Added the position of non-test axis (see 4.10);

g) Changed the requirements for schematic drawings (see 4.11, 4.8 of the 2017 edition);

h) Changed the requirements for pallets (see 4.12, 4.9 of the 2017 edition);

i) Added requirements for inspection environmental conditions (see 4.13);

j) The minimum tolerance requirements have been changed (see 4.16, 4.13 of the 2017 edition);

k) Changed the straightness error inspection requirements for X-axis, Y-axis and Z-axis motion (see G1 to G3 in 5.1, 2017 edition). G1~G3);

l) Changed the angular error inspection requirements for X-axis, Y-axis and Z-axis motion (see G4~G6 in 5.2, 2017 edition). G4~G6);

m) Changed the relationship between Z axis movement and X axis movement, Z axis movement and Y axis movement, Y axis movement and X axis movement Verticality error inspection requirements between (see G7 to G9 in 5.3, G7 to G9 in the 2017 edition);

n) Changed the spindle's axial error motion, the spindle taper's radial error motion, and the parallelism between the spindle axis and the Z axis motion Error, perpendicularity error between spindle axis and X axis movement, perpendicularity error between spindle axis and Y axis movement Requirements (see G10~G14 in 5.4, G10~G14 in the 2017 edition);

o) Changed the flatness error inspection requirements for the worktable (see G15 in 5.5, G15 in the 2017 edition);

p) Deleted the parallelism between the worktable and the X-axis and Y-axis motion, the runout between the worktable center hole and the worktable, and the worktable rotation.

Inspection requirements for the intersection and equidistance between the axis and the positioning datum (see G16 to G20 in the 2017 edition);

q) The requirement for perpendicularity inspection between the axis of rotation and the linear motion has been deleted (see G21 to G23 in the 2017 edition);

r) The requirement for the perpendicularity test between the rotation axes has been deleted (see G24 of the 2017 edition);

s) The intersection inspection requirement between rotation axes has been deleted (see G25 of the 2017 edition);

t) Deleted the parallelism test requirement between the rotation axis and the linear motion (see G26 in the 2017 edition);

u) Changed the positioning accuracy and repeatability test requirements for linear and rotary axes (see P1 and P2 in Chapter 6, 2017). Versions 6.1 and 6.2);

v) Changed the working accuracy inspection requirements (see Chapter 7, Chapter 7 of the 2017 edition);

w) Added additional geometric accuracy inspection requirements for AC swing rotary table machine tools (see Appendix A);

x) Added additional geometric accuracy inspection requirements for BC swing rotary table machine tools (see Appendix B);

y) The additional geometric accuracy inspection requirements for oscillating spindle head machine tools have been changed (see Appendix C, Appendix A of the 2017 edition);

z) The additional geometric accuracy inspection requirements for rotary and swinging spindle head machine tools have been changed (see Appendix D, Appendix B of the 2017 edition).

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., General Technology Group Kunming Machine Tool Co., Ltd., Shenyang Machine Tool Co., Ltd., Shanghai Aerospace Precision Machinery Research Institute, Wuhan Heavy Machine Tool Group Co., Ltd., Kede CNC Co., Ltd.

Co., Ltd., National Machine Tool Quality Supervision and Inspection Center, Sichuan Pushiningjiang Machine Tool Co., Ltd., and Zhejiang Keda Machine Tool Co., Ltd.

The main drafters of this document are: Xue Ruijuan, Wang Jing, Guo Guoqiang, He Chunshu, Chen Hongjun, Li Chengyong, Yu Chunping, Chen Yanyan, Tan Zhi, Zhang Wei, Huang Zuguang, Xu Haoli, Chen Wei, Zhang Ligang, Cai Minghui, Miao Dan, Zhou Zhigao, Wang Xiao, Jiang Erbiao 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 meet 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 second part of GB/T 34880, which mainly regulates the geometric accuracy, positioning accuracy and weight of five-axis vertical 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 2: Accuracy testing of vertical machine tools

1 Scope

This document specifies the geometric accuracy, positioning accuracy and repeat positioning accuracy of the CNC axis, and working accuracy of the five-axis linkage vertical machining center.

Inspection requirements, inspection methods and corresponding tolerances.

This document is applicable to ordinary (P-level) and precision (M-level) five-axis linkage vertical machining centers with linear axis travel up to.2000mm (hereinafter referred to as machine tools) design, manufacture, inspection and acceptance.

2 Normative references

GB/T 17421.1-2023

GB/T 17421.2-2023

GB/T 17421.7-2016

GB/T 19660-2005

GB/T 25379.1-2010

GB/T 25379.2-2010

GB/T 39953-2021

GB/T 39967-2021

3 Terms and Definitions

The following terms and definitions apply to this document.

4 General