GB/T 40735-2021Method for inherent energy efficiency evaluation of computer numerical control machine tools (English PDF)
数控机床固有能量效率的评价方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 11, 2021
Implementation date
May 1, 2022
Scope
GB/T 40735-2021 is the English-translated version of 数控机床固有能量效率的评价方法.
GB/T 40735-2021 gives the Chinese national method for evaluating the inherent energy efficiency of CNC machine tools, meaning the energy characteristics built into the machine itself and expressed through its total power when running dry.
It defines the operating states used in the evaluation, such as standby, spindle rotating with no load and feeding with no load, together with the standby power and the spindle idling power.
It then describes the evaluation method, the evaluation indexes and how they are obtained, with an informative annex giving an application example. It applies to CNC metal cutting machine tools.
Machine tool builders and test centres use it to compare the energy performance of machines. It was issued on 11 October 2021 and has applied since 1 May 2022.
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Document preview — GB/T 40735-2021
National Standard of the People's Republic of China
- ICS
- 25.080.01
- Classification
- J 50
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Evaluation method
- 4.1 Overview
- 4.2 Evaluation Index
- 4.3 Obtaining Evaluation Index
- Appendix A (informative appendix) Application example for evaluation of inherent energy efficiency of machine tools
- Reference
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the evaluation method for the inherent energy efficiency of CNC machine tools.
This standard applies to the evaluation of inherent energy efficiency of CNC metal cutting machine tools (hereinafter referred to as machine tools). For machine tools with non-speed-speed spindles, please refer to use.
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 document. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 4863-2008 Basic terminology of mechanical manufacturing technology
GB/T 6477-2008 Terminology for metal cutting machine tools
3 Terms and definitions
The following terms and definitions defined in GB/T 4863-2008 and GB/T 6477-2008 apply to this document.
3.1 Inherent energy efficiency of machine tools
The general term for the parameters that affect the energy consumption of the machine tool inherent in the machine tool itself. The total power in the dry running situation is expressed.
3.2 Standby
The total power of the machine tool is turned on. Except for the spindle and feed system, all other systems used to support processing are running.
Note: Rewrite ISO 14955.3-2020, definition 4.5.
3.3 Spindle rotating with no load
The spindle system is turned on in the standby state of the machine tool, and the spindle system is in a state of no-load operation.
3.4 Feeding with no load
When the machine tool is in standby mode, the feed system is turned on, and the feed system is in a no-load running state.
3.5 Standby power
The input power of the machine in standby.
3.6 Spindle idling power
The machine tool is at the input power of the spindle idling.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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