Some standard content:
ICS79.120.01
Machinery Industry Standard of the People's Republic of China
JB3380-1999
Woodworking machines-Surface planing machines withrotary cutterblockfor one side dressing-SafetyPublished on October 8, 1999
National Bureau of Machinery Industry
Implementation on March 1, 2000
JB3380-1999
·Scope
2 Reference standards
3 Definitions and terms
4 Hazard list
5 Safety requirements and/or measures
6 Information for use
Appendix A (Indicative Appendix) Research and design guide for protective coverAppendix B (Standard Appendix) Additional requirements for knife ：Appendix C (Indicative Appendix) Safe working methodsAppendix D (Standard Appendix) Test of protective devices of machine toolsAppendix E (Standard Appendix) Resistance test of workbench hatch boardAppendix F (Indicative Appendix) Determination of machine tool noiseWorking (operation) conditions/s
JB3380--1999
This standard is a revision of JB3380-83 based on the European standard EN8591997 "Woodworking Machine Tool Safety Woodworking Flat Planer". The technical content of this standard is basically consistent with EN859, and the limit value of the sound pressure level of the machine tool idling noise is added. Compared with JB3380-83, this standard has a large difference in technical content. This standard replaces JB3380-83 from the date of implementation. Appendix B, Appendix D and Appendix E of this standard are all standard appendices. Appendix A, Appendix C and Appendix F of this standard are all informative appendices. This standard is proposed by the National Technical Committee for Standardization of Woodworking Machine Tools and Cutting Tools. This standard is under the jurisdiction of Fuzhou Woodworking Machine Tool Research Institute. The responsible drafting unit of this standard is Fuzhou Woodworking Machine Tool Research Institute. The main drafters of this standard are Zheng Zongjian and Zheng Li. This standard was first issued on January 1, 1983. I
1 Scope
Machinery Industry Standard of the People's Republic of China
Woodworking machinesSurfaceplaning machines withrotarycutterblock for one side dressing-SafetyThis standard specifies the safety technical requirements and inspection methods for woodworking planes (hereinafter referred to as machine tools). This standard applies to machine tools produced after the implementation date of this standard.2 Referenced standards
JB 3380—1999
Replaces JB3380—83
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards.GB/T 699—1999
GB/T 37701983
GB/T 5226.1—1996
GB/T 9239 — 1988 | | tt | 95
GB/T 15706.2—1995
GB/T 16755-199T
JB/T 33771992
JB/T5720—1991
JB 6113—1992
JB/T 9953-1999
3 Definitions and terms
3.1 Definitions
High-quality carbon turbulent structural steel
Determination of sound power level of woodworking machine tools
Electrical equipment for industrial machinery Part 1: General technical requirements Balancing quality of rigid rotors Determination of permissible unbalance General safety rules for woodworking machine tools
Precision of woodworking planers
General ergonomic requirements for manipulators
Terminology for woodworking machine tools Woodworking planers
Terminology for woodworking machine tools Basic terms
Machinery Basic safety concepts and general design principles Part 1: Basic terms and methodology Basic safety concepts and general design principles for machinery Part 2: Technical principles and specifications Safety of machinery Rules for drafting and expressing safety standards Straight-edged planers for woodworking machines
General technical conditions for electrical equipment of woodworking machine tools Safety technical conditions for tools for woodworking machines
Method for measuring the sound pressure level of noise for woodworking machine tools
For the purpose of this standard, the following definitions are applicable. 3.1.1 Flat planer for woodworking
See 2.5.1 of GB/T15377-1994.
Approved by the State Bureau of Machinery Industry on October 8, 1999 and implemented on March 1, 2000
3.1.2 Planer body
See 4.1.3 of GB/T15377-1994.
3.1.3 Planer shaft
See 4.1.4 in GB/T15377-1994.
Planer shaft is also called knife shaft.
3.1.4 Manual feeding
See 3.3 in GB12557-2000.
3.1.5 Removable motorized feeding device
See 3.4 in GB12557-2000.
3.1.6 Projection
See 3.10 in GB12557-2000
3.1.7 Rebound
See 3.11 in GB12557--2000.
3.1.8 Starting time
See 3.13 in GB12557-2000.
3.1.9 Inertia time
See 3.14 of GB12557-2000.
3.1.10 Operator position
JB3380-1999
The position where the operator stands to feed the workpiece to the tool. 3.1.11 Guarantee
See 3.15 of GB12557-2000.
3.2 Terminology
See GB/T15377 and GB/T15379.
4 Hazard List
The Hazard List (see Table 1) covers all hazards of this machine tool: - For important hazards, by specifying safety requirements and/or measures, or by indicating appropriate Class B standards; for unimportant hazards, such as general, subordinate or secondary hazards, by indicating appropriate Class A standards, especially GB/T15706.1~15706.2, these hazards are proposed in accordance with GB/T16755. Table 1 Hazards list
Mechanical hazards, such as those caused by the following elements of machine parts or workpieces: shape;
relative position:
mass and stability (potential energy of each part): mass and speed (kinetic energy of each part): lack of mechanical strength:
accumulation of potential energy caused by: elastic parts (springs) or liquids or gases under pressure comply with the provisions of this standard
extrusion hazard
shear hazard
entanglement hazard
cutting or severing hazard
entrapment or entrapment hazard
impact hazard
stabbing or puncturing hazard
friction or tight damage hazard
high-pressure fluid injection hazard
JB3380-1999
Table 1 (continued)
(machine or added 1.=Material or parts) Radiation hazards (parts of machinery or machine tools) Instability
Hazards of slips, accidents and falls associated with machinery Electrical hazards, such as those caused by: electrical contact (direct or indirect)
Electrostatic phenomena
Heat radiation or other phenomena, such as spraying of molten particles, short circuits, chemical effects, overloads, etc. External influences on electrical equipment
Heat hazards, caused by:
Burns and scalds through flames or explosions that are accessible to people; Health effects caused by hot or cold working environments Hazards caused by noise:
Hearing loss, etc.
Interference with language communications, auditory signals, etc.
Hazards caused by vibrations
Hazards caused by radiation (e.g. ionizing radiation sources) Hazards caused by materials and substances applied, used or discharged by the machine, such as contact with or inhalation of harmful liquids, gases, fumes, etc. Dangers caused by dust and fire or explosion
Biological and microbiological (toxic or bacterial)
Hazards caused by ergonomics (the characteristics and compatibility of machines and people) when designing, such as:
Unhealthy posture or excessive force
Inappropriate consideration of the structure of human hands/arms or feet/limbs
Ignoring the use of personal protective equipment
Inappropriate work and lighting
Excessive mental stress or lack of preparation, etc.
Human errors
Combination of various hazards
Hazards caused by energy failure, mechanical parts damage or other functional failures, such as: energy failure (energy or control circuit)
Accidental ejection of mechanical parts or fluids
Conform to the provisions of this standard
Not applicable
Not applicable
Not applicable
Not applicable
5.2.1. 5.2.3, 5.2.5
Not suitable
Not suitable
Not suitable
Not suitable
Not suitable
Not suitable
Not suitable
Not suitable
5.1.2,5.3.5
Not suitable
Not suitable
Not suitable
Not suitable
JB3380-1999
Table 1 (End)
Failure or malfunction of control systems (accidental start, accidental overcurrent) Assembly errors
Machinery collapse, accidental loss of stability
Hazards caused by the suspension of protective measures (short-term) or incorrect setting of protective measures, such as: various protective devices
Various safety-related (protective) devices
Starting devices and stopping devices
Safety signals and signal devices
Various information and alarm devices
Energy cut-off devices
Emergency stop devices
E-parts feeding/removal devices
Main equipment and accessories for safety adjustment and/or maintenance Gas, etc. exhaust equipment
5 Safety requirements and/or measures
Conform to the provisions of this standard
5.1.1. 5.1.9
5.2.6.5.2.7
Not applicable
Not applicable
Not applicable
Not applicable
In addition to the provisions of this standard, the safety of machine tools shall also comply with the provisions of GB12557, GB/T15706.1 and GB/T15706.2.
Relevant instructions for reducing risks through design shall be in accordance with Chapter 3 of GB/T15706.2-1995. 5.1 Control and command devices
5.1.1 Redundancy and reliability of control systems For the purpose of this standard, the relevant safety control system includes the initial manual operator or position switch to the final transmission input, such as the motor system. The relevant safety control components of this machine tool include: starting (see 5.1.3);
-Normal stop (see 5.1.4):
Braking (if necessary, see 5.2.4)
These controls should be designed and manufactured with at least verified components and principles. For this standard, verified components and principles refer to: a) The following electrical components should comply with the relevant national standards and industry standards, especially the following components: ~Control switch with forced cut-off, which is used as a mechanically operated position switch in the interlocking protective device and the switch on the control circuit:
-Electromechanical contactor and motor starter for the main circuit; Rubber insulated wire:
PVC wire with additional protection against mechanical damage through wiring (such as inside the machine tool bed) b) In terms of electrical principles, whether it complies with the first four measures specified in 9.4.2.1 of GB/T5226.1-1996. Electronic components are specified separately and this principle is not adopted.
c) Whether the parts and components of the machine meet the requirements of 3.5 of GB/T15706.2-1995; JB3380-1999
Inspection method: Check the corresponding drawings and/or circuit diagrams, inspect on the machine tool, and prove that they meet the corresponding standards. 5.1.2 Position of the manipulator
The main electrical control operating parts used for starting and stopping the machine tool normally should be: the input end of the workpiece on the machine tool, which is generally not less than 600mm above the ground; the integral hanging operation panel at the workpiece input end, whose upper surface is generally not higher than 1700mm above the ground, and the distance between its front and the edge of the worktable at the workpiece input end is generally not more than 600mm. The front should not extend beyond the operator's side of the planer worktable. Inspection method: Check the corresponding drawings, measure and inspect on the machine tool. 5.1.3 Starting
For machine tools with detachable motorized feed devices, the feed motor can only be started after the cutter shaft motor rotates. Inspection method: Check the corresponding drawings and/or circuit diagrams, observe or perform functional tests on the machine tool. 5.1.4 Normal stop
A normal stop control that stops all operating parts should be installed, see 5.2.5 of GB125572000. The normal stop should be:
a) Class 1 is in accordance with 9.2.2 of GB/T5226.1-1996, applicable to machine tools equipped with electric brakesb) Class 0 is in accordance with 9.2.2 of GB/T5226.1-1996, applicable to other situations. For a Category 1 stop, the stop sequence shall be:
- cut off the power to a plug, if provided as a connection for a detachable motorized feed device; - cut off the power to the drive motor of the cutter shaft and the operating brake: cut off the power to the brake, if the brake is electrical, after the cutter shaft stops rotating, for example by a time relay: - cut off the power to the operating parts of the machine tool.
The cut-off sequence for a normal stop must be implemented by the structure of the corresponding control circuit. If a time relay is used, the delay shall be at least equal to the shortest braking time. The delay device shall be fixed, or the delay device and the adjustment device shall be sealed. Inspection method: Check the corresponding drawings and/or circuit diagrams, observe and perform functional tests on the machine tool. 5.1.5 Emergency stopbZxz.net
Not required.
5.1.6 Selection of operating mode
Not applicable.
5.1.7 Speed change
Not applicable.
5.1.8 Energy failure
For electrically driven machine tools, in the event of a power failure, after the power supply voltage is restored, the automatic restart protection device shall comply with the requirements of paragraphs 1 and 3 of 7.5 of GB/T5226.1-1996. Inspection method: Check the corresponding drawings and/or circuit diagrams, inspect on the machine tool and perform functional tests. 5.1.9 Control circuit failure
See 5.1.1.
5.2 Protection measures against mechanical hazards
5.2.1 Stability
JB3380-1999
The structure of the machine tool should have measures to fix it to the ground, table or other stable structure, such as holes in the machine tool base. Inspection method: Check the corresponding drawings and inspect. 5.2.2 Risk of breakage during operation
T. Table lip plate See 5.2.6.1. Requirements for tools See 5.2.3. See 5.2.8 for the requirements of protective devices. 5.2.3 Tool holder and tool structure
The tool shaft of the machine tool must be an assembled cylindrical structure. For the general requirements of assembled tools for machine tools, see the corresponding requirements of JB6113. For additional requirements and changes, see Appendix B (Standard Appendix). Inspection method: Check the corresponding drawings.
5.2.4 Braking
5.2.4.1 General requirements
Machines equipped with only one switch for starting, stopping and isolating are recommended to be equipped with an automatic mechanical brake. Where an electric automatic brake is provided on a machine, the main isolating switch shall not be fixed on the same side of the machine or the suspended operator panel as the normal stop control. Where reverse current braking is used, it shall not be possible to reverse the knife shaft. Where the unbraked coasting time exceeds 10 s, it is recommended to provide an automatic brake. The braking time with the brake shall be: less than 10 s, or where the starting time exceeds 10 s, less than the starting time but not more than 30 s.
Testing method: For the unbraked coasting time, starting time and braking time, see the corresponding test below. 5.2.4.2 Conditions for all tests
The spindle assembly shall be adjusted in accordance with the manufacturer's instructions (e.g. belt tension). Before testing, the machine shall be run idle for at least 15 min to allow the knife shaft assembly to warm up. Prove that the actual speed of the tool axis is within 10% of the rated speed. When testing a case with a manual star-delta starter, read the machine tool manufacturer's instructions for starting. The accuracy of the speed measuring instrument shall be +1% of full reading. The accuracy of the time measuring instrument shall be ±0.1s. 5.2.4.3 Test
5.2.4.3.1 Unbraked coasting time The unbraked coasting time is measured as follows: a) Cut off the power to the spindle drive motor and measure the unbraked coasting time; b) Restart the spindle and allow it to reach normal speed; c) Repeat steps a) and b) twice more.
The unbraked coasting time of the machine tool is the average of the above three measurements. 5.2.4.3.2 Starting time
The starting time is measured as follows:
a) Cut off the power to the spindle of the driving motor to make the spindle stop completely; b) Restart the spindle and measure its starting time c) Repeat steps a) and b) twice.
The starting time is the average of the above three measurements.
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