Standard No.:	GB/T 42628-2023
English Name:	Machine tools safety—Sawing machines for cold metal
Chinese Name:	机床安全 金属锯床
Chinese Classification:	J57    Slotting, broaching, planing and sawing machines
Professional Classification:	GB    National Standard
ICS Classification:	25.080.60 25.080.60    Sawing machines 25.080.60
Issued by:	SAMR; SAC
Issued on:	2023-05-23
Implemented on:	2023-12-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	25000 words
Price(USD):	750.0
Delivery:	via email in 1~3 business day

GB/T 42628-2023 Machine tools safety - Sawing machines for cold metal 1 Scope This document deals with all significant hazards, hazardous situations and events to sawing machines (including auxiliary equipment such as clamping device, cooling devices and feeding devices) as defined in Clause 3, whose primary intended use is for sawing cold metal (ferrous and non-ferrous). The list in Clause 4 of this document reveals the major risk factors of metal sawing machines. The main safety factors that manufacturers should follow in the design and manufacture of sawing machines are specified. Besides, this document is also the essential safety information provided by the manufacturer to the users for using the sawing machine. When additional processing (i.e. milling, boring, marking, finishing operation, etc.) is considered, this document can serve as a basis for safety requirements. For more detailed information, refer to the bibliography. This document deals with noise hazards but does not provide a full noise test code. It is intended to draft such a code in the next revision of this document. This document does not include requirements and safety measures for fire and explosion hazards. It is intended to deal with them in the next revision of this document. This document is applicable to (metal) sawing machines which are manufactured after the date of publication of this document. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 3768-2017 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746 : 2010, IDT) GB/T 8196-2018 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards (ISO 14120:2015, IDT) GB/T 15706-2012 Safety of machinery - General principles for design - Risk assessment and risk reduction (ISO 12100 : 2010, IDT) GB/T 16655-2008 Safety of machinery - Integrated manufacturing systems - Basic requirements (ISO 11161:2007, IDT) GB/T 16855.1-2018 Safety of machinery - Safety-related parts of control systems - Part 1 : General principles for design (ISO 13849-1:2015, IDT) GB/T 17248.3-2018 Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections (ISO 11202:2010, IDT) GB/T 17248.5-2018 Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections (ISO 11204: 2010, IDT) GB/T 18831-2017 Safety of machinery - Interlocking devices associated with guards - Principles for design and selection (ISO 14119:2013, IDT) GB/T 19876-2012 Safety of machinery ― Positioning of safeguards with respect to the approach speeds of parts of the human body (ISO 13855:2010, IDT) GB/T 23821-2009 Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2008, IDT) GB/T 28780-2012 Safety of machinery - Integral lighting of machines (EN 1837 : 1999, IDT) ISO 683-1 Heat-treatable steels, alloy steels and free-cutting steels - Part 1 : Non-alloy steels for quenching and tempering Note: GB/T 34484.1-2017 Heat-treatable steels - Part 1:Non-alloy steels (ISO 683-1:2016, MOD) ISO 3744 Acoustics-Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane Note: GB/T 3767-2016 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO 3744: 2010, IDT) ISO 4413 Hydraulic fluid power- General rules and safety requirements for systems and their components Note: GB/T 3766-2015 Hydraulic fluid power - General rules and safety requirements for systems and their components (ISO 4413 : 2010, MOD) ISO 4414 Pneumatic fluid power- General rules and safety requirements for systems and their components Note: GB/T 7932-2017 Pneumatic fluid power - General rules and safety requirements for systems and their components (ISO 4414:2010, IDT) ISO 4871 Acoustics-Declaration and verification of noise emission values of machinery and equipment Note: GB/T 14574-2000 Acoustics - Declaration and verification of noise emission values of machinery and equipment (ISO 4871 : 1996, IDT) ISO 9355-1 Ergonomic requirements for the design of displays and control actuators - Part 1 : Human interactions with displays and control actuators ISO 9355-2 Ergonomic requirements for the design of displays and control actuators- Part 2 : Displays ISO 9355-3 Ergonomic requirements for the design of displays and control actuators- Part 3 : Control actuators ISO 9614-1 Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1 : Measurement at discrete points Note: GB/T 16404-1996 Acoustics-Determination of sound power levels of noise sources using sound intensity - Part 1: Measurement at discrete points (ISO 9614-1:1993, EQV) ISO 13850 Safety of machinery- Emergency stop function - Principles for design Note: GB/T 16754-2021 Safety of machinery - Emergency stop function - Principles for design (ISO 13850:2015, IDT) ISO 13854 Safety of machinery - Minimum gaps to avoid crushing of parts of the human body Note: GB/T 12265-2021 Safety of machinery - Minimum gaps to avoid crushing of parts of the human body (ISO 13854 : 2017, IDT) ISO 13856-1 Safety of machinery- Pressure sensitive protective devices- Part 1 : General principles for design and testing of pressure-sensitive mats and pressure-sensitive floors Note: GB/T 17454.1-2017 Safety of machinery - Pressure-sensitive protective devices - Part 1 : General principles for design and testing of pressure-sensitive mats and pressure sensitive floors (ISO 13856-1 :2013, IDT) ISO 14122-2 Safety of machinery - Permanent means of access to machinery - Part 2 : working platforms and walkways Note: GB/T 17888.2-2020 Safety of machinery - Permanent means of access to machinery - Part 2 : Working platforms and walkways (ISO 14122 -2: 2016, IDT) ISO 14122-3 Safety of machinery - Permanent means of access to machinery- Part 3 : Stairs, stepladders and guard-rails Note: GB/T 17888.3-2020 Safety of machinery - Permanent means of access to machinery - Part 3 : Stairs, stepladders and guard-rails (ISO 14122-3:2016, IDT) ISO/TR 11688-1 Acoustics - Recommended practice for the design of low noise machinery and equipment - Part 1 : Planning Note: GB/T 25078.1-2010 Acoustics - Recommended practice for the design of low-noise machinery and equipment - Part 1 : Planning (ISO/TR 11688-1: 1995, IDT). IEC 60204-1:2009 Safety of machinery - Electrical equipment of machines- Part 1 : General requirements Note: GB/T 5226.1-2019 Electrical safety of machinery - Electrical equipment of machines - Part 1 : General requirements (IEC 60204-1 : 2016, IDT) IEC 61000-6-2 Elctromagnetic compatibility (EMC) - Part 6-2 : Generic standards- immunity for industrial environments Note 1: GB/T 17799.2-2003 Electromagnetic compatibility - Generic standars - Immunity for industrial environments (IEC 61000-6-2:1999, IDT); Note 2: IEC 61000-6-2:2016 Electromagnetic compatibility (EMC) - Part 6-2 : Generic standards-Immunity standard for industrial environments IEC 61000-6-4 Electromagnetic compatibility (EMC) - Part 6-4 : Generic standards - Emission standard for industrial environments Note: GB/T 17799.4-2012 Electromagnetic compatibility (EMC) - Generic standards - Emission standard for industrial environments (IEC 61000-6-4:2011, IDT) EN 1037: 1995 + A1:2008 Safety of machinery - Prevention of unexpected start-up 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 15706-2012, GB/T 16855.1-2018 and the following apply. 3.1 sawing machine machine tool that is used for cutting material and cutting into length using a sawing tool (3.9) 3.1.1 band-sawing machine sawing machine (3.1) that is mainly used for cutting material and cutting into length using a sawing tool (3.9) which is designed as an flexible endless saw band Note: Examples are given in Clause 5 and Figures 1 to 8. 3.1.2 circular sawing machine sawing machine (3.1) for cutting bar and profile material to length with a sawing tool (3.9) which is designed as a circular saw blade Note: Examples are given in Clause 5, Figures 9 to 16 and Annex C. 3.1.3 hack-sawing machine sawing machine (3.1) for cutting bar and profile material to length with a sawing tool (3.9) which is clamped between the ends of a downwardly open bow Note: Examples are given in Clause 5 and Figure 17. 3.1.4 automatic sawing machine sawing machine (3.1) in which the power-operated elements perform continuous or repeat cycles Note 1 : The first cycle initiated by a control system starts from the operator until either an automatically determined condition is achieved, or a stop signal is given by the system or the operator. Note 2 : A typical cycle can be feeding of work material (3.13), clamping of work material, feeding of sawing tool (3.9) through work material, sawing tool retraction, unclamping of workpiece (3.14), unloading of workpiece and unclamping of work material. Repeat the above cycle until a stop signal is actuated.