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GB 13887-2008: Safety codes for cold pressing
Status: Valid GB 13887: Evolution and historical versions
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Basic data | Standard ID | GB 13887-2008 (GB13887-2008) | | Description (Translated English) | Safety codes for cold pressing | | Sector / Industry | National Standard | | Classification of Chinese Standard | C68 | | Classification of International Standard | 13.100 | | Word Count Estimation | 30,388 | | Date of Issue | 2008-12-11 | | Date of Implementation | 2009-10-01 | | Older Standard (superseded by this standard) | GB 13887-1992 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 19 of 2008 (No. 132 overall) | |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 cold stamping safety terms, definitions and safety requirements, including stamping structure, process, presses, dies and other aspects of safety devices and safety rules. This standard applies to cold stamping production. | GB 13887-2008: Safety codes for cold pressing---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.
Safety codes for cold pressing
ICS 13.100
C68
National Standards of People's Republic of China
Replacing GB 13887-1992
Cold stamping safety regulations
Posted 2008-12-11
2009-10-01 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
3 Terms and definitions 2
Four pairs of safety stampings structure and process of claim 2
5 pairs presses safety requirements 3
Requirements 116 safety devices
Seven pairs of die design and manufacture of safety requirements 16
8 pairs of installation and commissioning of the safety requirements of the die 18
9 press overload and overheating prevented 21
2210 Prevention of noise and vibration
11 pairs practices safety requirements 22
12 pairs of safety equipment inspection and repair requirements 23
Appendix A (informative) Installation Figure 24 die
Annex B (informative) main technical parameters of the die plate 26
Foreword
All the technical contents of this standard is mandatory.
This standard replaces GB 13887-1992 "cold stamping safety regulations." This standard is GB 13887-1992 amendments.
This standard compared with GB 13887-1992, the main changes are as follows.
--- Add, update national standard reference;
--- Increasing the term of the corresponding English words (Chapter 3 standard), modify the form definition (Chapter 3 of this standard);
--- Clutches and brakes increased safety requirements (this standard 5.2.3.14,5.2.3.15 and 5.2.3.16);
--- Screw press increased safety requirements (this standard 5.2.5.4);
--- Increased the cushion pad or spring safety requirements (this standard 8.7.6);
--- Delete the original standard obsolete content (eg. 7 safety limit controls and an example of FIG. 8 with a safety pin mounted limit
Set an example of);
--- For other chapters also made additions and improvement.
Appendix A of this standard and Appendix B is an informative annex.
This standard was proposed by the State Administration of Work Safety.
This standard by the National Safe Production Standardization Technical Committee (SAC/TC288) centralized.
This standard is drafted by. Ninth Design and Research Institute of Machinery Industry.
Participated in the drafting of this standard. First Automobile Group Corporation.
The main drafters of this standard. Wang Ye Qing, Deng Xuesong, Li Chunlan, Antai Yu, Lu Zhendong.
This standard was first published in 1992 and 2008, the first revision.
Cold stamping safety regulations
1 Scope
This standard specifies the safety of cold stamping of terms, definitions and technical safety requirements, including stamping structure, process, presses, safety devices
And die and other aspects of security rules.
This standard applies to cold stamping production.
2 Normative references
The following documents contain provisions which, through reference and become the standard terms. For dated reference documents, all subsequent amendments
(Not including errata content) or revisions do not apply to this section, however, encourage the parties to study whether to use according to the agreement
The latest version of the file. For undated reference documents, the latest versions apply to this standard.
GB 150 steel pressure vessels
GB 2893 Safety colors
GB 2894 Safety Signs and use guidelines
GB/T 3766 Hydraulic System General technical conditions
GB 4053.1 fixed steel ladders Safety Conditions
GB 4053.2 fixed steel inclined ladder safety and technical conditions
GB 4053.3 fixed industrial protective railings Safety Conditions
GB 4053.4 stationary industrial steel platform
GB/T 4205 man-machine interface (MMI) --- operating rules
GB 4584 presses photoelectric protection device technology
GB 5083 production equipment with safety and health General
Technical Safety Requirements GB 5091 presses
GB 5092 press induction type safety device technology
GB 5093 press held electromagnetic sucker technical conditions
GB 5226.1 Safety of machinery electrical equipment Part 1. General requirements
GB/T 8176-1997 production stamping plant safety General
GB/T 13914 stampings dimensional tolerances
GB/T 13915 stampings angle tolerance
GB/T 13916 stampings shape and position without individual tolerance
GB/T 15055 stampings not note size limit deviation tolerance
GB 17120 Metalforming machinery - Safety requirements
JB/T 1829 Forging Machinery General technical conditions
JB/T 2547.1 double-disc friction press technical conditions
JB3350 mechanical presses - Safety requirements
JB/T 3818 hydraulic machine technical conditions
JB3915 hydraulic machine safety and technical conditions
JB/T 4378.1 cold stamping metal structural elements
JB/T 4378.2 cold metal stamping parts General technical conditions
JB/T 6056 Environmental Guidelines stamping plant
JB8780 screw press Safety Conditions
JB/T 9175.1 fine blanking process of structural member
"Pressure Vessel Safety Technology Supervision"
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
a) press and apparatus, equipment (machinery and equipment safety protection devices and die, etc.);
b) press operator's personal safety;
c) press-related staff (for example, maintenance personnel and die installation and adjustment work, etc.) personal safety;
d) due to accidental mechanical failure or an accident produced by equipment and endanger the personal safety;
e) convenience or unduly taxing operational.
3.2
Meet the following two conditions is security presses.
a) equipped with a hydraulic friction clutch or the press;
b) equipped with safety devices with both hands;
c) with sensitive type safety devices and alarm interlock failure or transportable stall;
d) equipped with interlocking safety cover.
3.3
Safety devices and general security control device.
3.4
Since the stamping operation possible for the operator to cause area damage.
4 security requirements for the structure and process of stamping
4.1 General Requirements
4.1.1 must follow JB/T 4378.1, JB/T 4378.2, GB/T 15055, GB/T 13915, GB/T 13916, GB/T 13914 and
JB/T 9175.1 and other standards, the right structure and process design stamping.
Its structure should function 4.1.2 stampings (including appearance function) and use adapted to the conditions.
4.1.3 Stamping structure must have good technology, economy and stamping production safety. Security as a priority.
4.1.4 must stampings structural design and process design stage, to take measures against all danger and insecurity may be generated
Prevention.
4.2 Design
4.2.1 absolutely avoid sharp edges, corners and projections and the structure and function independent of the conditions of use.
4.2.2 The individual should be substituted with scattered small pieces of the whole structure.
4.2.3 In addition to the choice of materials to adapt to the strength and stiffness requirements of the workpiece, the forming process should meet the requirements of the plastic deformation. Forming,
Bending and drawing large plastic workpiece materials should be used.
4.2.4 There should avoid contour slit or notch (cutout groove width is less than or equal to 2 times the sheet thickness) of complex shape structures.
4.2.5 Avoid punching width less than or equal to the sheet thickness and constant width of the structure in the longitudinal direction.
4.2.6 fitting structure shall conform to the following points.
a) in different material thickness and strength conditions, the minimum allowable punching diameter;
b) the minimum distance to the edge of the hole bending member bend side;
c) the minimum distance to the edge of the hole of the outer profile;
d) the minimum distance between the hole and the hole.
4.2.7 bending member crimping minimum height must be greater than 2.5 times the sheet thickness. The minimum height of the hemming bending member must be greater than 4 times
The sheet thickness;
4.2.8 bent parts, formed parts and drawing parts, must be considered a step in the process of fixing the reference blank, and positioning stable.
4.3 Process Design
4.3.1 Process design, the provisions of 4.2 should be structured review process.
4.3.2 choose presses, special attention should be nominal force, slide stroke, Die height, table and slide stroke adjustment and the effective work
And other major technical parameters.
4.3.3 you must use security presses.
4.3.4 Process design should pay attention to prevent overload presses, deep drawing parts should be noted that drawing force (see Chapter 9).
4.3.5 Process design must also comply with GB/T 8176-1997 the provisions in 6.1, 6.2 and 6.4.
4.3.6 When the press of the main technical parameters, performance, form and its attachments, etc. can not meet the technical requirements nor appropriate alternative press
, To submit instructions and recommendations for the press manufacturer reference.
4.3.7 When using manual operation, you should consider feeding the workpiece positioning and removal direction, and to facilitate safe operation.
4.3.8 safety device used, operator safety tools, safety precautions and operation, should be included in the same language and the same press process
Member.
5 Requirements for security presses
5.1 General Requirements
5.1.1 must press the relevant requirements of GB 5083, there is provided a safety device to prevent injury. Presses supplier must not eliminate
In addition to warning of dangerous places or instructions.
5.1.1.1 The following moving parts may cause injury to people, must use protective shields to prevent straying into human body.
a) flywheel, gears, pulleys and shaft ends and other persons close to the rotary member;
b) clamping point gear, pulley and the drive chain;
c) clamping point slider and relatively stationary portion.
Guards should be installed in the handle, easy hook or other portable devices.
Fixed or shield support bracket, at least should be able to withstand the weight of the shield twice the static load.
5.1.1.2 The following phenomena may occur in parts broken loose, loss or release of mechanical energy and harm people, must protect
Cover (set) or locking means and measures.
a) due to breakage of the shaft causes the motor pulley, flywheel, clutch, gears and other moving parts of the falling or flying;
b) Since the bolt loosening or breakage caused by motor shield, or other fastener fly off;
c) flying the spring fracture caused;
d) exposed to the exterior of the device shall be fitted with effective guards or protective cover, some large machine parts when subject to conditions, you can set
Prevent people from touching the fence;
e) moving platform rail sweep should avoid because of the track with debris caused by splashing caused by accidents.
5.1.1.3 danger zone to cause injury to the operator must take special measures to prevent it. In addition to the press to provide reliable and secure
Manipulation, external monitor with the brake system, the need for specialized treatment (see Chapter 6).
5.1.2 In addition to this standard, the safety requirements of the press should also comply with GB 17120, JB3350 and JB/T 1829 or the like.
5.1.3 Presses ergonomic design must conform to GB/T 8176-1997 7.2 and related standards.
5.1.4 must press the design stage, to take measures to guard against all dangers and insecurity that may arise.
5.2 transmission control device
5.2.1 General provisions
5.2.1.1 presses must have a reliable and sensitive drive control device.
5.2.1.2 transmission control device must be easily controlled and monitored.
5.2.2 Rigid clutches and brakes
5.2.2.1 rigid clutch transmission mechanical presses, there must be a single travel agency, as they control the action by the spring, the pressure should be used
Spring, the spring guide rod or bore (tube) guide. When single stroke cycle is completed, the crank should stop at the top dead center, the actual error should not be greater than ± 5 °.
5.2.2.2 type manipulation device can be used with both hands or foot operated device, but both should choose one.
5.2.3 friction clutches and brakes
5.2.3.1 using the friction clutch transmission press, you must have the following characteristics, that is, when the clutch is engaged to eliminate external conditions or off
Electricity (gas), the clutch is disengaged immediately, while the brake is engaged immediately.
5.2.3.2 pneumatic friction clutch and brake control system, should press the safety interlock valve with safety monitoring devices.
5.2.3.3 In the clutch, brake control system, there must be an emergency stop button. When performing stop control of instantaneous action, must ensure that the clutch
Immediately disengaged, brake engaged immediately. Re-engaging the clutch must be operated according to the selected mode.
5.2.3.4 emergency stop button to stop the operation should take precedence over other control devices.
5.2.3.5 each column should be set large presses the emergency stop button, the button should have a self-locking function. Emergency stop button should be set at the control point, to
Near the feed point, staff can quickly reach and will not generate the malfunction at.
5.2.3.6 In the clutch, brake control system must be provided with stroke selector to select the operation mode press. But direct
Transmission of large low-speed and high-speed presses, deep drawing presses, unless a small dedicated.
5.2.3.7 stroke selector should be "disengaged", "jog", "single trip" and "continuous journey" operation mode, press the clockwise turn
arrangement.
5.2.3.8 stroke selector in "disengaged" position, all operation must be stopped, the slider can not be started.
5.2.3.9 "Jog" can be used to control one or both hands. "Single stroke" must hand control.
When 5.2.3.10 single stroke cycle is completed, the crank should stop at the top dead center, the actual error is usually not more than + 5 ° ~ -10 °.
5.2.3.11 When you need to "continuous journey", the operator must first make a pre-control action. Continuous trip circuit and display should be easy tube
Management departments to monitor.
5.2.3.12 When either of these maneuvers both hands but also with their feet the way, there must be hand, foot control selector, and choose one of the latter two, another operation
Longitudinal mode must fail.
5.2.3.13 Select all applications as key switch and can be interlocked. But in a press 1000kN nominal power of not less
This limits.
5.2.3.14 clutch is sensitive and reliable, without even the red.
a) rigid clutch switch or key and straight key should handle without breaking;
b) manipulator rod, pin or spring should be no cracks, broken;
c) Solenoid no adhesion traction magnet contacts, relay contacts reliable contact;
d) pitch slider from the dead required under braking, the clutch should be able to immediately block brake inner dead 25mm stroke range;
e) Slider trips > 200r/min of the press can not use the slide pin, turn key clutch;
f) securing the clutch installation, reliable operation, ensure no slider with red.
5.2.3.15 brake reliable, coordinated and interlocking clutch.
a) when the brake is released, the entire brake shoe and brake wheel gap should be substantially equal braking band maximum opening (unilateral) should ≤1mm;
The actual contact area of the wheel brake b) with friction brake pads (brake shoe) should be greater than 70% of the theoretical contact area;
c) each active brake pin should be flexible rotation, no abdication, card, rust and other phenomena, cotter complete;
d) small brake shaft or spindle surface should be hardened, and not to replace the ordinary bolt, brake pads and brake wheel Wamo rubbing surfaces are not allowed
Oil or other defects;
e) the brake lever, rod, brake arm, or lagging crack, plastic deformation or breakage of the spring brake with a lining thickness has worn
50% of the original thickness, the rivet head buried depth of less than 50% of the thickness of the friction plate, pin and shaft bore wear up to 5% of the original diameter
When the parts should be scrapped;
f) should be scrapped brake drum cracks, uneven tread ≥1.5mm, should be re-light the car, when the brake wheel rim wear of the original thickness
40% should be scrapped brake wheel;
g) brake and clutch must be coordinated with the interlock brake boot to release the clutch a little lag recombination;
h) or interlocking connection should be accurate, securing stable operation, coordination;
i) travel limit, controls the correct operation of good and effective.
5.2.3.16 clutch, brake air line must have a pressure switch, to prevent access to the clutch, brake pressure compressed air piping system
Lower than the specified working pressure caused by the brake off does not open, the clutch transmitting torque shortage caused by the accident.
5.2.4 hydraulic control system
5.2.4.1 The hydraulic control system of hydraulic machine, you must have the following characteristics, namely when the pump starts, only manipulate the slider starter, sliding
Block to operate.
5.2.4.2 the hydraulic control system, there must be an emergency stop button. When the emergency stop control instantaneous action of the event, you must immediately stop the slider
movement.
5.2.4.3 In the hydraulic control system must be provided with alternative press operation specification stroke selector. But only the "disengagement" and "continuous
Trip "except hydraulic functions.
5.2.4.4 stroke selector should be "disengaged", "jog", "single trip" and "continuous journey" operation mode, turn clockwise
arrangement.
5.2.4.5 When a hand can be when both feet way either of these maneuvers, must be provided with a hand, foot control selector, choose between one after another
Kinds of ways to manipulate must fail.
5.2.4.6 emergency stop button, selector stroke and hand, foot control to select the functions and requirements, respectively, with reference to 5.2.3.4 ~ 5.2.3.13
Provisions.
5.2.4.7 In the hydraulic control system, it is necessary to make a single stroke and/or continuous travel in one cycle process has the following characteristics.
a) a slider away empty rapid decline;
b) Slow Slider approaching the workpiece;
c) Slider load slow working stroke;
d) slider backlash rising rapidly.
5.2.4.8 Multi pump drives a hydraulic machine, pump control mechanism should be to ensure that each pump can be started sequentially.
5.2.4.9 The hydraulic control system should be able to ensure that when the slider to the maximum rate of decline, "stop" control can be achieved in the shortest moment of inertia
Decreased value should meet the requirements in Table 1.
Table 1 Hydraulic slider allow the inertia value decline
Hydraulic Type
Hydraulic machine Nominal power /
kN
Allow inertia drop value /
mm
Various hydraulic machine hydraulic bending machine outside
≤500
> 500 to 3000
> 3000
Hydraulic bending machine
≤1000
> 1000 to 5000
> 5000
5.2.4.10 hydraulic plunger device must have a limit (or slider) over the working stroke prevention, in addition to the mechanical stop means or mechanism, liquid
Pressure control system shall limit electrical or hydraulic safety device, or both.
There must be a slider locking means 5.2.4.11 hydraulic machine, turn off the power to ensure that, when hydraulic power disappears, the slider is not unexpected downward.
5.2.4.12 Hydraulic other parts refer JB3915 standards.
5.2.5 Other Transmission Control
5.2.5.1 presses the friction disk drive (friction press), Pneumatic presses (pneumatic presses) and using hand or foot drive
Presses (collectively manual presses), allowing only a single stroke. Stroke length should be adjustable.
Transmission control means presses 5.2.5.2 preceding article, shall direct manipulation lever (handle), which can be manual or foot control type of formula can be
Single-hand control or hand control. But the hand control or foot control to choose between the two, another way to manipulate must fail.
5.2.5.3 should brake friction press.
5.2.5.4 screw press should meet the following requirements.
a) protective cover. the moving parts exposed, should generally be set up protective cover, protective cover between moving parts and can not harm the human body formed clip
Tight spots;
b) clutch and brake. When the slider downward braking, brake stroke should not exceed 1/2 of the whole trip, the slider row, in any
Positions can brake and the slider must not conflict with the rigid beam occurs. Brake generally should not use air, liquid or electricity as system
Dynamic power;
c) Slide stroke cushioning device. press cushioning device should be set to prevent the failure of the brake when the slider is moved to the upper limit of the fuselage
Rigid impact;
d) Foot manipulator. manipulation and manual manipulation of the foot should be interlocked, foot operated automatically adjust work norms and work regulations shall not be used
Fan. Pedal foot pedal or activities should be connected to the electrical protective devices;
e) and other parts of the reference JB8780 JB/T 2547.1 standards.
5.3 slide balancing device
5.3.1 General provisions
Short stroke, high-speed presses, the slider should be a small spring balance device, large and medium-sized presses, the slider shall pneumatic balancing device.
5.3.2 spring balance device
5.3.2.1 spring balancing device should be symmetrical distribution.
5.3.2.2 spring balancing device, such as a tension spring should be used in the upper portion of the slider; such as the use of the lower portion of the slider spring.
5.3.2.3 must be guided by a spring guide rod or conduit (hole).
5.3.3 pneumatic balancing device
5.3.3.1 cylinder pressure regulator must regulator, according to the different quality of the upper mold adjustment counterweight.
5.3.3.2 balanced cylinder gas tank must have adequate capacity, and its value should be at least 4 to 5 times the volume of the cylinder. Gas tank must be a single
Connected to the valve and the gas source.
5.3.3.3 cylinder gas path must balance the pressure relay, ensure the slider stroke cylinder balance work, or to prevent brake failure
When the link broken, the slider falling generate accident.
5.4 manipulators
5.4.1 General provisions
5.4.1.1 manipulator should be sensitive and reliable, easy to manipulate.
5.4.1.2 maker response using both hands to manipulate objects (buttons, joystick or handle) or foot control actuator (button foot pedal or lever)
The need to provide instructions. Pedal (see FIG. 1) is the use of a foot operated electrical switch or a valve or the solenoid valve operated pedal, the clutch control
Foot control mechanism or clutch brake control system. Foot bar (see Figure 2) is a rigid mechanical linkage operated clutch pedal operation
Vertical organization. Button foot pedal is the use of electrical switches operated solenoid valve or valves, and its role as the manual button.
FIG. 1 the pedal of the two cases
Two cases of foot bar 2
5.4.1.3 foot control actuator can only be used with both hands need to manage the work, manipulating the frequency of no more than the case of 20min-1 and can only be taken
With one form.
5.4.1.4 When standing work, should maximize the use of the manual actuator without foot control manipulator.
5.4.1.5 In addition to pneumatic dispensing valve handle can move around, the other hand control lever (handle) of the steering direction can only be moved up and down, and shall
Consistent with the slider rising and falling action. Direction of movement of the control operation of electrical equipment are to comply with the relevant provisions of GB 4205.
5.4.1.6 Presses manual stroke actuator (not including selectors) form only allows the use of push-button or lever type, does not allow the use of song
Handle grips or hand wheel, knob, flip the lever switch form. Unless the adjustment member.
5.4.2 operating force, stroke or angle and adaptability
5.4.2.1 manipulator control force means the operator of the manipulator manipulating force applied to part with the opening and closing control system switching power is not
Certain equivalence.
Steering force and stroke (or angle) 5.4.2.2 manipulator and the main dimensions recommended values specified in Table 2.
Shape and Structure 5.4.2.3 manual control lever (handle) of the holding portion should shape manpower and manipulation meet the requirements.
The depressed foot control actuator 5.4.2.4 surface should be non-slip, such as mosaic mat, an area of not less than 50cm2.
5.4.2.5 foot control actuator should tread forefoot pressure mode is not recommended for the whole foot or heel of the depressed mode.
Table 2 actuator operating force...
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