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GB 24386-2009: Gear grinding machines -- Safeguarding specifications
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Gear grinding machines -- Safeguarding specifications
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GB 24386-2009
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Basic data | Standard ID | GB 24386-2009 (GB24386-2009) | | Description (Translated English) | Gear grinding machines -- Safeguarding specifications | | Sector / Industry | National Standard | | Classification of Chinese Standard | J56 | | Classification of International Standard | 25.040.20 | | Word Count Estimation | 23,277 | | Date of Issue | 2009-09-30 | | Date of Implementation | 2010-07-01 | | Quoted Standard | GB/T 191; GB/T 1251.1; GB/T 1251.2; GB/T 1251.3; GB 2893; GB 2894; GB/T 3167; GB/T 3168; GB 5226.1-2002; GB/T 6576; GB/T 7932; GB/T 8196; GB/T 9969; GB 12265.1; GB 12265.2; GB 12265.3; GB/T 13379; GB/T 14775; GB/T 14776; GB/T 15241.2; GB/T 15706.1-2007; GB/T 15706.2-2007; GB 15760-2004; GB/T 16251; GB/T 16769; GB/T 16855.1; GB/T 16856.1; GB/T 18153; GB 18209.2; GB 18209.3-2002; GB/T 18569.1; GB/T 18569.2; GB/T 18831; GB/T 23572; GB/T 23573; GB/T 23574; JB 4029; JB/T 5062; JB/T 8356.1; JB/T 8356.2; JB/T 8356.3 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 10 of 2009 (No. 150 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard specifies the main danger for grinding to take basic security measures as well as technical requirements and verification methods. This standard applies to general purpose cylindrical gear grinding machine (hereinafter referred to as the machine). | GB 24386-2009: Gear grinding machines -- Safeguarding specifications---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.
Gear grinding machines.Safeguarding specifications
ICS 25.040.20
J56
National Standards of People's Republic of China
Grinding machine safety and technical conditions
Posted 2009-09-30
2010-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative references 1
Dangerous machine 2 3
4 Safety requirements and verification methods and measures 8
5 Use the information 18
6 Liability 19
Foreword
The rest is mandatory.
The standard proposed by China Machinery Industry Federation.
This standard by the National Standardization Technical Committee of metal cutting machine tools gear machine Technical Committee (SAC/TC22) centralized.
This standard was drafted. Shaanxi Qinchuan Machinery Development Co., Ltd., Shanghai Machine Tool Works Ltd., Shanghai First Machine Tool Plant.
The main drafters of this standard. Hu Wanliang, Yangqi Jun, Wang Xiaoling, Zhangjia Gui, Li Xiaowen.
This standard is the first release.
Grinding machine safety and technical conditions
1 Scope
This standard specifies the technical requirements and basic security measures for major risk exists grinding taken and verification methods.
This standard applies to general purpose cylindrical gear grinding machine (hereinafter referred to as the machine).
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 191 Packaging - Pictorial signs (GB/T 191-2008, ISO 780.1997, MOD)
GB/T 1251.1 Ergonomics public places and work areas - Auditory danger signal danger signal (GB/T 1251.1-
2008, ISO 7731.2003, IDT)
GB/T 1251.2 Ergonomics - Visual danger signals - General requirements, design and testing (GB/T 1251.2-2006,
ISO 11428.1996, IDT)
GB/T 1251.3 Ergonomics danger signal system and audio-visual information (GB/T 1251.3-2008, ISO 11429.
1996, IDT)
GB 2893 Safety colors (GB 2893-2008, ISO 3864-1.2002, MOD)
GB 2894 Safety Signs and use guidelines
GB/T 3167 metal-cutting machine tools - Symbols (GB/T 3167-1993, neq ISO 7000. 1984)
GB/T 3168 digital control of machines - Symbols (GB/T 3168-1993, neq ISO 2972. 1979)
GB 5226.1-2002 Safety of machinery electrical equipment Part 1. General requirements (IEC 60204-1.2000,
IDT)
GB/T 6576 machine lubrication system (GB/T 6576-2002, eqv ISO 5170. 1977)
GB/T 7932 pneumatic systems General technical conditions (GB/T 7932-2003, ISO 4414.1998, IDT)
GB/T 8196 mechanical safety devices fixed and movable guards design and manufacture of general requirements (GB/T 8196-
2003, ISO 14120.2002, MOD)
GB/T 9969 General Instructions industrial products
GB 12265.1 machinery Safety distances to prevent danger zones being reached upper limbs (GB 12265.1-1997, eqvEN294.
1992)
GB 12265.2 machinery Safety distances to prevent (GB 12265.2-2000, eqvEN811 lower limbs danger zones.
1994)
GB 12265.3 Safety of machinery to avoid crushing of parts of the human body minimum spacing (GB 12265.3-1997, eqvEN349.
1993)
GB/T 13379 Principles of visual ergonomics indoor workplace lighting (GB/T 13379-2008, ISO 8995.2002, NEQ)
GB/T 14775 manipulator General ergonomics requirements
GB/T 14776 Ergonomic design principles job size and value
GB/T 15241.2 associated with psychological load ergonomic principles - Part 2. Design principles (GB/T 15241.2-1999,
idt ISO 10075-2.1996)
GB/T 15706.1-2007 Safety of machinery - Basic concepts, general principles for design - Part 1. Basic terminology, methodology (ISO 12100-1.
2003, IDT)
GB/T 15706.2-2007 Safety of machinery - Basic concepts, general principles for design - Part 2. Technical principles (ISO 12100-2.
2003, IDT)
GB 15760-2004 Metal-cutting machine tool safety general technology condition
Ergonomic principles GB/T 16251 design of work systems (GB/T 16251-2008, ISO 6385.2004, IDT)
GB/T 16769 Metal Cutting Machine noise level measurement method
GB/T 16855.1 machinery safety control system relating to safety components - Part 1. General principles for design (GB/T 16855.1-
2008, ISO 13849-1.2006, IDT)
GB/T 16856.1 Safety of machinery - Risk assessment - Part 1. Principles (GB/T 16856.1-2008, ISO 14121-1.
2007, IDT)
GB/T 18153 Safety of machinery - accessible surface temperature determine the thermal surface temperature limit of Ergonomics data (GB/T 18153-
2000, eqvEN563.1994)
GB 18209.2 Safety of machinery - Indication, marking and actuation - Part 2. Requirements for marking (GB 18209.2-2000, idt IEC 61310-
2.1995)
GB 18209.3-2002 Safety of machinery - Indication, marking and actuation - Part 3. position of the operating member and the operating requirements
(Idt IEC 61310-3.1999)
GB/T 18569.1 Safety of machinery decreased from hazardous substances emitted by machinery health risk - Part 1. mechanical system for
Manufacturer of the principles and norms (GB/T 18569.1-2001, eqv ISO 14123-1.1998)
GB/T 18569.2 Safety of machinery decreased from hazardous substances emitted by machinery - Part 2 health risks of. generating a verification process
Sequence methodology (GB/T 18569.2-2001, eqv ISO 14123-2.1998)
GB/T 18831 mechanical interlock design belt guard and selection principles (GB/T 18831-2002,
ISO 14119.1998, MOD)
GB/T 23572 Metal Cutting Machine Hydraulic System General technical conditions
GB/T 23573 metal cutting machine dust concentration measurement method
GB/T 23574 Metal Cutting Machine mist concentration measurement method
JB4029 grinding wheel guard security technology requirements
JB/T 5062 information display device ergonomics general requirements
JB/T 8356.1 Technical Conditions Packaging Machine
JB/T 8356.2 packing machine
JB/T 8356.3 packaging machine, the small wooden box
Danger 3 machine
3.1 should be GB/T 15706.1-2007 Chapter 5 of GB/T 16856.1 requirements on the machine for risk analysis and risk assessment
Price, to identify and evaluate the risk of the presence of the machine.
NOTE. This standard does not involve the dangers and take measures according to relevant provisions of GB/T 15706.2 of.
3.2 When hazard analysis for the operator and other persons due to the foreseeable misuse generation (see GB/T 15706.1-2007 in 3.22)
Special attention should be dangerous. include.
--- Machine during use;
--- Machine adjustment, cleaning, maintenance period.
3.3 The main risk of the presence of the machine are shown in Table 1.
Table 1 Danger List
No. dangerous types of hazards present in the machine
GB 15760-2004
The relevant clauses
Safety requirements and measures in this
Standards related to reg
Mechanical hazards (due to).
---shape;
---relative position;
--- Quality and stability (potential energy);
--- Quality and speed (kinetic energy);
--- Insufficient mechanical strength;
--- Potential energy aggregation.
--- Elastic member;
--- Liquids or gases under pressure
1.1 Risk of crushing
a) dangerous extrusion head frame between table;
b) moving column and other stationary objects between
Risk of crushing;
c) Risk of crushing between the wheel and the workpiece;
d) Risk of crushing between the wheel and the dresser;
e) mechanical chip conveyor moving part and the fixed portion
Risk of crushing points between
5.2.3.2,
5.2.4.5,
5.5.1
4.2.3.2,
4.2.4.4,
4.5.1
1.2 Cut dangerous
a) cutting table and the headstock between the danger;
b) cutting headstock and column (or slide) between
Cut danger;
c) shearing hazard between the dresser and the abrasive
5.2.3.2,
5.2.4.5,
5.5.1
4.2.3.2,
4.2.4.4,
4.5.1
1.3 cutting or severing hazard
Machine parts could result in personal injury
Sharp edges, corners and could easily lead to the opening or cutting cut
Off danger
5.2.2.1,
5.2.2.3,
5.2.7
4.2.2.1,
4.2.2.3
1.4 winding danger
a) the operator in manual operation (such as assembly and disassembly of the workpiece
Or measurement);
b) close to the rotating grinding wheel or workpiece resulting wound
Danger;
c) Since the fixed line measure wound caused by improper
About the danger
5.2.3.1
4.2.2.2,
4.2.3.1
1.5 or inhalation hazard involved
a) high-speed rotation of the wheel and the machine headstock,
Between tailstock members, especially the wheel and work
Easily lead between member inhalation or danger involved.
b) high-speed rotation is easy to change gears inadequate protection
Inhaled or cause danger involved
5.2.3.1 4.2.3.1
1.6 Shock hazard
a) table, carriage, column and other fast moving parts
Percussive danger caused;
b) the impact of the danger caused by fast-moving grinding head
5.2.3.3,
5.2.3.4,
5.2.3.7
4.2.3.3,
4.2.3.5,
4.2.3.7
Table 1 (continued)
No. dangerous types of hazards present in the machine
GB 15760-2004
The relevant clauses
Safety requirements and measures in this
Standards related to reg
1.7 stabbed or pricked dangerous
Sharp edges exposed machine parts, sharp corners, projections
Sub puncture or pricks caused by hazardous and openings
5.2.2.1,
5.2.2.3,5.20
4.2.2.1,
4.2.2.3
1.8 high-pressure fluid ejection hazard
a) tubing, pipe and cooling pipe burst accident made
Injection into danger;
b) when the pressure hydraulic accumulator maintenance do not unload,
Removing the pipe causing the pressure oil injection
5.4.10,
5.15
5.16
4.4.10,
4.13
4.14
1.9 machine parts/workpiece throw dangerous
a) the movement of the workpiece or machine parts falling or thrown
Arising out of danger;
b) the risk of broken wheel caused thrown;
c) burns caused by splashing chips, scratches danger
5.2.3.5,
5.2.4,
5.4.10,
5.5.1
4.2.3.5,
4.2.4,
4.4.10,
4.5.1
The risk of loss of stability 1.10
a) the shape of the machine due to improper layout machine
Bed dangerous loss of stability;
b) during storage and transportation, the machine moving parts intended
Outer parts fall out of control or cause to move
Dump
5.2.1,
5.2.5,
5.19
4.2.1,
4.17.2,
4.17.3
1.11 slip, trip and fall hazard
a) machine tools, wire and cable conduits, tubing, gas
Condenser tube and a trip hazard caused;
b) machine tool coolants, cutting fluids, oil and Run
Lubricant spillage or leakage caused by slippery floors lead
Slip hazard played;
c) personnel to operate, maintain, adjust the machine from
Hazardous working position falling
5.2.2.2,
5.2.9.1,
5.11.5,
5.15
5.18
4.2.2.2,
4.9.5,
4.13
4.16
2 electrical hazards
2.1 danger of electric shock
Unprotected or inadequately protected and the residue a) charged body
Electric shock caused by dangerous voltages;
b) improper electrical equipment insulation or insulation failure cited
Shock hazard plays;
c) Failing to take electrical equipment grounding
Risk of electric shock caused by
5.3.1 4.3
2.2
Protection of electrical equipment inappropriate
Danger caused
a) electrical equipment in the current exceeds the rating or
Current carrying capacity of the wire without overcurrent protection
Overcurrent caused by improper or dangerous;
b) Motor overload or overload not
When the danger caused;
c) danger caused by speeding motor;
d) low voltage, high voltage or power interruption
Danger caused
5.3.1,
5.3.5
4.3
3 thermal hazards
Table 1 (continued)
No. dangerous types of hazards present in the machine
GB 15760-2004
The relevant clauses
Safety requirements and measures in this
Standards related to reg
3.1
A thermal contact or heat caused by radiation
Burns and scalds
a) contacting the heat lamp, electrical components (such as. electric
Resistance, large transformers, motors, etc.) and often pick
Touch machine parts of the surface caused by high temperature
The Danger of burns;
b) contacting the heating element or the hydraulic system oil
Danger of burns caused
5.7 4.7
3.2
Health is caused by excessive heat or cold to
Harm
4 noise hazard
4.1 hearing loss or other physiological disorders
By the machine's power source (motor) power transmission and
More than the standard system and the grinding process to produce regulations
Dangerous noise level caused
5.8 4.8
4.2 Interference language and voice communication signals - 5.8 4.8
5 Vibration hazards - 5.9
6 radiation risks -
6.1 arc - 5.10.1
Laser 6.2 - 5.10.2
6.3 ionizing radiation - 5.10.1
6.4 high and low frequency electromagnetic fields - 5.3.6
7 hazardous substances and materials resulting
7.1
Harmful, noxious liquid, gas, smoke
Fog, mist and dust
Machine operator and the surrounding personnel contact or inhalation
Grinding dust, fumes, oil mist and coolant
5.11.1,
5.11.2
4.9.1,
4.9.2
7.2 Fire and explosion
a) Explosion splashed coolant heat lamp caused
Fried danger;
b) grinding sparks flying mist caused by contact with
Fire hazard;
c) Due to fire caused by improper selection of coolant
Danger;
d) the risk of fire caused by electrical equipment
5.11.3 4.9.3
7.3 biological and microbiological risk
Operation or maintenance staff have contact with bacteria or viruses
Hydraulic oil and coolant (go bad) caused
Danger
5.11.4 4.9.4
Ignore the design of ergonomics
Danger
Table 1 (continued)
No. dangerous types of hazards present in the machine
GB 15760-2004
The relevant clauses
Safety requirements and measures in this
Standards related to reg
8.1 unhealthy postures or excessive force
a) machine tools, hand wheel, lever operation force is too large, and
Effect of the operator's health;
b) the machine hand wheels, handles, buttons and observation stations
Installation height measuring device readings substandard
Fitness, which will affect the operator's health;
c) the height of the table is too low or too high, and Movies
Sound health of the operator
5.2.9.2,
5.12.1,
5.12.2,
5.12.3
4.10
Use personal protective equipment 8.2 overlooked
Fixed wheel, easy to sand blown into the eyes
The damage
5.10.2,
5.12.1
4.10.1
8.3 Inappropriate area lighting
Work area illumination inadequate illumination are not enough,
And stroboscopic effects, dazzling phenomenon, caused by the human visual
Influence of sleep
5.13 4.11
8.4 spirit too much tension or lack of preparation, etc.
Excessive noise machine and machine-paced work
Too fast or mode of operation does not meet the original ergonomics
Li and other causes of mental tension or operator
Operating unable to focus
5.12.1
4.8
4.10.1
8.5 Human Error
a) Symbols mistaken identity is unclear cause operation
For danger caused;
b) the direction of movement of the machine operating direction is not human
Consistent misuse caused by dangerous;
c) machine tool operator misuse unintended actions
Danger caused
5.4.3,
5.12.2.1
4.4.3,
4.10.2.1
Energy supply disruptions, machine parts
Damage and other disorders caused by
Danger
9.1
The machine control system or the ability to supply
Interrupt
a) power interruptions or fluctuations cause the machine work
Member or moving parts fall hazard generated.
When switched on again b) after power interruption, since the machine
Line restart caused by dangerous
5.3.2,
5.4.2
4.3
4.4.2
9.2
Machine parts/workpiece unexpectedly thrown,
Unexpected pressure of liquids or gases discharged
a) grinding wheel, and other artifacts in power interruption, loose connections
Accidentally thrown or falling hazard when moving;
b) a gas or liquid pressure in the power interruption, yuan
Accidental discharge caused by dangerous when broken
5.2.3.5,5.2.4,
5.4.10,5.5.1,
5.15,5.16
4.2.3.5,4.2.4,
4.4.10,4.5.1,
4.13,4.14
9.3 control system failure or malfunction
a) moving parts malfunction, unexpected start, speed
Change of control and can not stop the movement caused
Danger;
b) wheel speed or wheel frame feeding excess;
c) protection device failure
5.2.3.7,
5.2.4.6,
5.4.10
4.2.3.7,
4.4.10
Table 1 (continued)
No. dangerous types of hazards present in the machine
GB 15760-2004
The relevant clauses
Safety requirements and measures in this
Standards related to reg
9.4 assembly error
a) machine components and assembly errors conduit, cable,
Hydraulic, pneumatic fittings, and other connection error caused
Danger;
b) dangerous motor running in the wrong direction
5.14
4.2.3.6,
4.12
9.5 overturning, unexpected loss of machine stability
a) the use of the machine or in the process of storage and transportation accidents fall
Fall, tipping or moving;
b) the risk of fracture caused by the counterweight element system
5.2.1,
5.2.5,
5.19
4.2.1,
4.17.2,
4.17.3
Error safeguards, safety devices
Improperly installed or not positioned correctly produce
Danger
10.1 guards
a) the structure is not strong or openings caused by too much
Danger;
Design structure b) protective devices such as unreasonable.
Impairing the view or generate additional extrusion
Or shear zone danger
5.5.1,
5.5.2
4.5.1,
4.5.2
10.2 Safety (protection) devices
a) interlock device does not cause dangerous reliable;
b limit the risk of improper means or failure caused)
5.5.1,
5.5.3
4.5.1,
4.5.2
10.3 Starting and stopping device
a) mark is not obvious (difficult to identify) or arrangements do not
Reasonable cause dangerous misuse;
b) means due to electrical fault causes such failure
The danger
5.4.4,
5.4.5
4.4.4,
4.4.5
10.4 safety symbols and signal
Machine dangerous parts (such as electrical cabinets, push button station, then
Junction box, junction box, motors, etc.) uncoated safe colors
Let danger or safety signs caused
5.6 4.6
10.5 Information and alarm devices
a) on the machine is not set the alarm device or alarm device
Risk of causing unreliable;
b) does not provide safe use, adjustment and maintenance machines
Bed danger caused by information;
c) the machine is not dangerous fuel tank caused the oil standard set
5.4.3,
5.12.3,
4.4.3,
4.10.3,
10.6 energy supply cut-off device
Energy supply means no cutting and self-mark
Locking device, disconnect at the "downstream" still have energy
It could easily lead to the danger of
5.4.5,
5.15
5.16
4.4.5,
4.13
4.14
10.7 emergency stop devices
a) stop means easy to identify hazards caused;
b) emergency stop devices unreliable, installation location
The danger caused by the irrational
5.4.6 4.4.6
10.8 loading and unloading
Loading and unloading devices caused no security
Cut the risk of injury
5.26 4.2.5
Table 1 (continued)
No. dangerous types of hazards present in the machine
GB 15760-2004
The relevant clauses
Safety requirements and measures in this
Standards related to reg
10.9
Security adjustments and/or repair of the
Major equipment and accessories
No special tools or to provide a full and dedicated
Annex enables the operator to adjust the safety and/or maintenance
When dangerous
5.20
4.2.4.4,
4.18
10.10 exhaust - 5.2.4.7 -
4 security requirements and measures and verification methods
4.1 General Requirements
4.1.1 The design should be eliminated or reduced by all potential risk factors as possible.
4.1.2 By design danger can not be avoided or sufficiently limited and should take the necessary safety devices (guards, safety devices).
4.1.3 For the design can not be excluded or reduced, and its security guards are not completely effective or ineffective legacy risk applications
Information notification and alert the operator.
4.2 Machine Tool
4.2.1 Stability
Machine shape layout should ensure adequate stability. When using the machine (under predetermined conditions of use according to the instructions provided) and should not be
Unexpected tip over, fall or risk of shifting. Since the shape of the machine can not be reason enough to ensure stability, should be specified in its specification
Fixed measure.
Verification. visual inspection and/or check information.
4.2.2 Outline
4.2.2.1 exposed portion may contact may result in personal injury should not have sharp edges, corners and openings.
Verification. visual inspection and/or check information.
4.2.2.2 variety of cable wire machine, hydraulic lines, pneumatic lines, cooling lines, pipelines and other lubricating arrangements should be a reasonable arrangement, accessibility,
Prevent tripping and other hazards.
Verification. visual inspection and/or check information.
4.2.2.3 projection machine, moving parts, separating part should take security measures to prevent gouges, bumps, scratches, cut the risk of injury.
Verification. visual inspection or check information.
4.2.3 moving parts
4.2.3.1 may cause wound, inhaled or involved in other dangerous moving parts and gears (machine gears, racks, pulleys, leather
Belt, screw, etc.) should be closed or set security guards or use of information, unless they are safe location.
Verification. visual inspection and/or check information.
4.2.3.2 The moving parts of the machine between the stationary member and the other there should be no danger squeeze or shearing hazard, such as longitudinal movement of table section
Member, wheelhead traverse section, otherwise security measures according to the provisions of GB 12265.3.
Verification. check drawings, visual inspection and/or check information.
4.2.3.3 worktable and wheelhead mobile presence shock hazard, should be provided with a reliable stop means, can be taken, if necessary, reliable relief
Red means. If you set the limit means, it shall take the necessary security measures.
Verification. visual inspection and/or check information.
4.2.3.4 Since the wheelhead table and other moving parts and overload damage may occur should be set overload safety device. Due to the structure of the original
Because when you can not set, the machine should be marked limits on the machine (or manual) conditions of use.
Verification. check drawings, visual inspection or check information.
4.2.3.5 wheel mounted on the spindle chuck and other possible loose parts in the movement, members should be set against rotation.
Verification. check drawings and/or visual inspection.
4.2.3.6 For unidirectional rotating parts should be prominently marked direction of rotation.
Verification. visual inspection
4.2.3.7 In an emergency stop or power system failure, wheel frame and table and other moving parts should be in place to stop or return to the design requirements
s position.
Verification. visual inspection
4.2.3.8 When the moving parts at the same time does not allow movement, the control mechanism should be interlocked. Interlock can not be achieved, should be set up in the vicinity of the control mechanism
Warning signs and instructions in the manual.
Verification. visual inspection and/or check information.
4.2.4 clamping device
4.2.4.1 Wheel chuck, workpiece chuck and tailstock clamping device security measures should be taken to ensure that the workpiece and the grinding wheel in the process will not loose
Or thrown off. If necessary, explain the use of safety-related information in the instructions for use (such as the installation side wheel maximum line speed and wheel
, Maximum weight of workpiece clamping and safe use of the speed range, etc.).
Verification. visual inspection and/or check information.
4.2.4.2 manual clamping device
Manual workpiece clamping chuck and tailstock clamping device should take security measures to prevent accidental danger.
Verification. function test and/or check information.
4.2.4.3 motorized clamping device
a) motorized tailstock clamping hydraulic clamping device clamping process should start and end of the interlocking machine operation;
b) motorized tailstock clamp hydraulic clamp device only under the conditions of human action to relax the workpiece.
Verification. function test
Or when replacing the wheel, should be taken manually upper and lower parts 4.2.4.4 security measures (such as provision of information or with special lifting tools) to prevent production
Students extrusion dangerous.
Verification. visual inspection and/or check information.
4.2.4.5 In an emergency stop or power system failure, tailstock clamping device should prevent the risk of generating security measures.
Verification. visual inspection and/or check information.
4.2.5 automatic loading and unloading device
Automatic, the next feeding device, should be provided with fixed guards or interlocking movable guards, or warning signs.
Verification. visual inspection and/or check information.
4.3 Electrical System
Electrical system shall comply with the relevant provisions of GB 5226.1
Verification. the supplier provide proof or test.
4.4 Control System
4.4.1 General requirements
Addition ...
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