HOME   Cart(2)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

GB/T 40804-2021 English PDF

US$744.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 40804-2021: Short-term capability evaluation of machining processes on metal-cutting machine tools
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 40804-2021English744 Add to Cart 5 days [Need to translate] Short-term capability evaluation of machining processes on metal-cutting machine tools Valid GB/T 40804-2021

PDF similar to GB/T 40804-2021


Standard similar to GB/T 40804-2021

GB/T 28615   GB/T 24343   GB/T 24344   GB/T 40807   GB/T 40806   

Basic data

Standard ID GB/T 40804-2021 (GB/T40804-2021)
Description (Translated English) Short-term capability evaluation of machining processes on metal-cutting machine tools
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J50
Word Count Estimation 43,482
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 40804-2021: Short-term capability evaluation of machining processes on metal-cutting machine tools


---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.
Short-term capability evaluation of machining processes on metal-cutting machine tools ICS 25.080.01 J50 National Standards of People's Republic of China Short-term capability assessment of metal cutting machine tool processing machinetools (ISO 26303.2012,Machinetools-Short-termcapabilityevaluationof Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅰ Introduction Ⅱ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Symbol 3 4.1 Capital letter 3 4.2 Lowercase letters 3 4.3 Greek letter 4 5 Foreword 5 6 Short-term capability assessment procedures 5 6.1 General 5 6.2 Protocol 6 6.3 Warm-up program 7 6.4 Adjustment 7 6.5 Production 8 6.6 Measurement 8 6.7 Calculation and analysis 8 7 Factors affecting short-term capability assessment 12 7.1 General 12 7.2 Thermal influence 12 7.3 Influence of measurement uncertainty 13 7.4 The impact of statistical analysis 14 Appendix A (informative appendix) Supplementary information related to statistical evaluation 15 Appendix B (Normative Appendix) Protocol Table 21 Appendix C (Normative Appendix) Analysis Table 25 Appendix D (informative appendix) Short-term capability agreement and analysis examples 29 Reference 37

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. The translation method used in this standard is equivalent to the adoption of ISO 26303.2012 "Short-term Capability Assessment of Machine Tool Metal Cutting Machine Tool Processing". The Chinese documents that have a consistent correspondence relationship with the normatively cited international documents in this standard are as follows. ---GB/T 10610-2009 Product Geometric Technical Specification (GPS) Surface structure profile method to evaluate the rules of surface structure And methods (ISO 4288.1996, IDT). This standard has made the following editorial changes. ---Modified the standard name; ---Fixed the mistake of quoting the chapter number in Figure 2; --- Replace the symbols sg and act that are not referenced in 4.2 with sact; --- Modify the symbol ΔXk used incorrectly in A.3 to ΔXc. This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Standardization Technical Committee for Metal Cutting Machine Tools (SAC/TC22). Drafting organizations of this standard. Wuhan Heavy Machine Tool Group Co., Ltd., National Machine Tool Quality Supervision and Inspection Center, Xiamen Meike Security Technology Co., Ltd. Co., Ltd., Chongqing Machine Tool Group Co., Ltd., Jilin University, Beijing University of Technology, Shanghai Institute of Mechanical and Electrical Testing Technology, Anqing Machine Bed Co., Ltd., Guangdong Tehua Technology Co., Ltd., Guangdong Manya Technology Co., Ltd., Jiangmen Yibingding Machinery Co., Ltd. The main drafters of this standard. Xu Haoli, Guilin, Huang Zuguang, Zhang Wei, Zhao Ming, Zou Xiaodi, Li Junxiao, Chen Yanyan, Chen Jiaping, Yu Kebin, Li Guofa, Liu Zhifeng, Li Shulin, Weng Weihuan, Wang Yunfei, Hong Bo, Zhang Yuanlin, Su Shiqiao, Liang Rongfu.

Introduction

Short-term capability assessment of the machining process and machine tool performance testing methods that adopt GB/T 17421 (all parts) and other machine tool related standards Compared with the method, it is a different evaluation method for machine tools. Analyze the quality of the test piece according to the data obtained from the test and statistical conditions. The purpose of this standard is to enable as many interested parties as possible to obtain this information. For mass production, in addition to machine tool performance testing, short-term process capability evaluation and capability testing are often used. In fact, the machine Bed users are increasingly using statistical process control (SPC) technology in their activities, and often require the machine tool manufacturer/supplier to do the same. For system suppliers, give them responsibility for the processing process. Statistical methods in process management are included in ISO 22514 (all parts). Due to the lack of recognized national standards, for the acceptance of machine tools based on the ability to process specific workpieces, each user stated The requirements and methods are very different. Therefore, lengthy discussions and adaptation processes during acceptance testing are usually necessary, which can delay the machine. The bed is delivered to the customer and incurred a lot of related time and cost expenditures. This standard provides a short-term capability test for the machining process during machine tool acceptance. Provided a unified procedure. This standard describes. ---The short-term capability of a given process, including the machine tool tested, the machining process, the tools and fixtures used, and the workpiece performance; ---Estimation of relevant machine tool performance indicators. This standard complies with and complies with the requirements of ISO 22514 (all parts). The term "process performance" specified in ISO 22514-3 corresponds to The term "short-term capability" in this standard. The term "short-term capability" has been widely used in the machine tool industry for many years. Therefore, this standard still continues Continue to use this term. Combined with statistical evaluation, many influencing factors significantly limit the proportion of tolerance intervals covered by machine tool changes. Therefore, machine tool capability refers to The number should be specified together with the test conditions and the required tolerance range. Short-term capability assessment of metal cutting machine tool processing

1 Scope

This standard stipulates that the short-term capability of the machining process of the metal cutting machine tool shall be determined through the specified test piece during the acceptance of the metal cutting machine tool (i.e., indirect test) It also gives suggestions on the test conditions, the measuring system used and the relevant requirements of the machine tool. This standard is consistent with ISO 22514 (all parts) describing statistical methods for process management, and involves the use of these methods in machine tools and testing. Specific application in batch processing of parts. This standard does not include functional tests that are usually performed before testing accuracy, nor does it include Full condition test. Appendix A provides supplementary information related to statistical evaluation. For the protocol table and analysis table of the short-term ability test, see Appendix B and Appendix C. Appendix D is an example. Note 1.The purpose of direct testing is to study the performance of a single machine tool, such as geometry or positioning accuracy. The short-term capability assessment is to prove that a machine tool is capable of As a specific processing task, the short-term ability test only focuses on processed products. This means that the direct test method is more suitable for determining the machine Based on this, the machine tool that is widely used in production is structurally improved; the short-term capability test is not suitable for detecting the error source of the machine tool. Therefore, metal cutting machine tools are more suitable for special machine tools that mainly process specific workpieces through short-term ability assessment of the processing process, such as the production line. Workstation, the processing time of each workpiece is less than 10min, so that at least 50 test pieces are processed per shift, less than this number will make the statistical uncertainty large Big increase. Short-term capability assessment can also be carried out on general-purpose machine tools, such as machining centers for mass production that meet the above statistical requirements. Note 2."Short-term capability" is a term that has been widely used in the machine tool industry and corresponds to the term "process performance" specified in ISO 22514-3.2008.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. ISO 4288 Geometric Technical Specifications for Products (GPS) Surface Structure. Rules and Methods for Evaluating Surface Structure by Profile Method [Geomet- ricalProductSpecifications(GPS)-Surfacetexture.Profilemethod-Rulesandproceduresforthe assessmentofsurfacetexture] ISO 22514-3.2008 Statistical Methods in Process Management Capability and Performance Part 3.Based on Measurement Data of Discrete Parts Processing performance research (Statisticalmethodsinprocessmanagement-Capabilityandperformance-Part 3.Ma- chineperformancestudiesformeasureddataondiscreteparts) ISO /T R22514-4.2007 Statistical Method Capability and Performance in Process Management Part 4.Process Capability Evaluation and Performance Measurement (Statisticalmethodsinprocessmanagement-Capabilityandperformance-Part 4.Processcapa- bilityestimatesandperformancemeasures)

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Short-termcapability The manufacturing unit's ability to produce specific parts within the specified confidence level and tolerance range. This concept is mainly used in mass production. Note 1.The manufacturing unit can be a single machine tool, a spindle of a multi-spindle machine tool, a workstation on a production line, etc. Note 2.Process capability is defined in 2.2.1 in ISO /T R22514-4.2007 as. the characteristic of the output product of a process in a statistical control state or a steady state. Sexual statistical evaluation is used to describe the ability of the process to achieve products that meet the required characteristics.

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 40804-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 40804-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 40804-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 40804-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.