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GB/T 45379-2025 English PDF

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GB/T 45379-2025: Five-axis hybrid electrical discharge and arc milling machines - Testing of the accuracy
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GB/T 45379-2025English599 Add to Cart 5 days [Need to translate] Five-axis hybrid electrical discharge and arc milling machines - Testing of the accuracy Valid GB/T 45379-2025

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Basic data

Standard ID GB/T 45379-2025 (GB/T45379-2025)
Description (Translated English) Five-axis hybrid electrical discharge and arc milling machines - Testing of the accuracy
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J59
Classification of International Standard 25.080.99
Word Count Estimation 30,344
Date of Issue 2025-03-28
Date of Implementation 10/1/2025
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 45379-2025: Five-axis hybrid electrical discharge and arc milling machines - Testing of the accuracy


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 25.080.99 CCSJ59 National Standard of the People's Republic of China Five-axis EDM arc milling machine Accuracy test Testing of the accuracy 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 Nomenclature of the main components of machine tools 1 5 General 3 6 Geometric accuracy 4 7 Positioning accuracy 14 8 Working accuracy 19 Figure 1 Schematic diagram of a mobile cradle machine tool and its coordinate axes Figure 2 Schematic diagram of a fixed cradle machine tool and its coordinate axes Table 1 Precision of the workbench 4 Table 2 Accuracy of linear motion axis 9 Table 3 Precision of spindle and rotary axis 12 Table 4 Positioning accuracy of CNC axis 15 Table 5 Machine tool working accuracy 20

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. 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 Special Processing Machine Tools (SAC/TC161). This document was drafted by. China University of Petroleum (East China), Suzhou Electro-Mechanical Machine Tool Research Institute Co., Ltd., Beijing Electro-Mechanical Research Institute Ltd., Capital Aerospace Machinery Co., Ltd., Xiamen Songzhu Precision Technology Co., Ltd., Shanghai Jiaotong University, China Aviation Manufacturing Technology Research Institute Institute, Shandong Haomai CNC Machine Tool Co., Ltd., Xiamen Standardization Research Institute, Beijing Institute of Technology, Guangdong Taizheng Precision Machinery Co., Ltd., Nanjing Ningqing CNC Machine Tool Manufacturing Co., Ltd., Shenzhen Lanlan Technology Co., Ltd., Hunan Jinling Machine Tool Technology Group Co., Ltd., Hebei Guan Shi Automation Technology Co., Ltd. and Hangzhou Datian CNC Machine Tool Co., Ltd. The main drafters of this document are. Liu Yonghong, Ji Renjie, Wu Qiang, He Hu, Zhang Kun, Xiao Liqiang, Gu Lin, Fu Junying, Ma Jipeng, Wang Shaowu, Wu Yue, Guo Jianmei, Li Chaojiang, Wu Xinlei, Xia Zhenpo, Cai Jing, Wang Wentao, Lei Limeng, Liu Guodong, and Wang Yuanqing.

Introduction

With the advancement of science and technology and industrial development, new difficult-to-cut materials and their complex components continue to emerge, and the inadaptability of traditional milling is becoming increasingly prominent. Therefore, modern industry has an urgent need for new and efficient milling technology and machine tools for difficult-to-cut materials. Machining is a method of using high-voltage, low-energy electric sparks to open energy transmission channels and low-voltage, high-energy arc energy to remove materials. It is not affected by the strength and hardness of the material, has the advantages of high processing efficiency, low cost, energy saving and environmental protection, and has been widely used in aviation and aerospace in recent years. However, EDM arc milling machine tools lack relevant technology. Standards have limited its large-scale application and sustainable development of the industry. This document provides a unified precision requirement and test method for EDM milling machines. The integration of milling technology and standards leads the technological progress of EDM technology and machine tools, and promotes the high-quality development of the difficult-to-cut parts manufacturing industry. The development provides technical and equipment support to solve the "bottleneck" problem of processing parts made of difficult-to-cut materials in high-end equipment, and fills the gap in standards. The document specifies the testing methods and tolerance values for machine tool manufacturing accuracy and working accuracy, and improves the design and manufacturing quality and processing application level of machine tools. It can meet the needs of machine tool R&D and production enterprises, and also provide a standardized basis for the manufacturing acceptance and use of machine tools. To meet the industrial development needs of enterprises. Five-axis arc EDM milling machine Accuracy test

1 Scope

This document specifies the naming, general rules, geometric accuracy, positioning accuracy, working accuracy of the main components of the five-axis electric spark arc compound milling machine tool. degrees, and the tolerance values corresponding to the above accuracy inspection items. This document is applicable to the accuracy detection of five-axis EDM arc milling machines with linear axis travel up to 1000mm.

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 14896.1 Terminology of special processing machine tools Part 1.Basic terms GB/T 17421.1-2023 General rules for machine tool inspection Part 1.Geometric accuracy of machine tools under no-load or quasi-static conditions GB/T 17421.2-2023 General rules for machine tool inspection Part 2.Determination of positioning accuracy and repeatability of CNC axes GB/T 19660 Industrial automation systems and integrated machine tool numerical control coordinate systems and motion nomenclature

3 Terms and definitions

The terms and definitions defined in GB/T 14896.1 and the following apply to this document. 3.1 A special machine tool that uses electric spark arc compound milling method to process workpieces.

4 Nomenclature of main machine tool components

The five-axis EDM arc milling machine tool (hereinafter referred to as the "machine tool") has three CNC linear axes (X, Y, Z) and two CNC rotary axes. Axis (A, B, C in any combination), the machine tool coordinate axis is named in accordance with the provisions of GB/T 19660.This document is based on a machine with three CNC linear axes As an example, a vertical five-axis EDM arc milling machine with two CNC rotary axes (X, Y, Z) and two CNC rotary axes (A, C) is used. There are two types. mobile cradle type and fixed cradle type. The schematic diagram and coordinate system of the mobile cradle type machine tool are shown in Figure 1, and the schematic diagram and coordinate system of the fixed cradle type machine tool are shown in Figure 2. See Figure 2 for the system.

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