7.1 Marking
7.1.1 General requirements shall comply with EN 292-2, paragraph 5.4 and Annex A, paragraph 1.7.3.
7.1.2 Each machine must have a clear and permanent marking indicating:
- The name and address of the manufacturer, if any, of the supplier;
- CE marking, if available - Year of manufacture;
- The model name of the machine;
- Serial number;
- The mass of the machine without cutting tools and accessories;
- Information on the electrical, hydraulic and pneumatic systems, if any;
- The size range used cutting tools;-range of cutting speeds and feeds;
- The direction of rotation (displacement) of the cutting tool (to be indicated by an arrow).
7.2 Instructions (Operating Instructions)
7.2.1 General requirements shall comply with EN 292-2, section 5.5 and Annex A, paragraph 1.7.4.
7.2.2 The manual must include:
a) the repetition of the information on labeling (see 7.1.2);
b) details of mooring places for transportation machine, assembling machine and his guard (for example, requirements to the state of the floor, the supply of energy, protection against vibration, fasteners);
c) information management systems, including wiring diagram for the electrical, hydraulic and pneumatic systems. If the machine is installed programmable electronic or pneumatic system (PES, PPS), the circuit diagram should be shown the relationship between them and other
non-programmable parts of the control system;
d) information about the performance of the machine;
e) List of lubricants, hydraulic fluids or coolants that are recommended for use on the machine, as well as instructions for their use. In the information should be given to the importance of preventing the liquid from splashing onto the space around the machine and exclusion, thus creating the danger of sliding and sudden fall of persons near the machine;
f) the declaration of the noise in accordance with EN 292-2, Annex A, paragraph 1.7.4, item f), and Annexes A and B to this standard;
g) instructions concerning the testing machine and the safety of the equipment before starting the machine;
h) how to install, replace, cutting tools, cleaning, use of clamping and feeding devices;
i) a warning about the need for personal protective equipment (clothing operators, the special protection of the ears from noise, safety glasses for eye);
j) instructions to regulate fences and guide cutting blades to the specifications of each type of cutting blades;
k) instructions for controlling fences and other means of protection after the replacement or adjustment of cutting tools;
I) instructions for safety control of the cut material at profile and contour cutting;
m) instructions concerning the dangers of vibration, especially for machine tools, hand-operated (ie, hand feed and loading / unloading of parts.)
n) the requirements for periodic repair the machine, it guides and protective devices.
To perform control operations in listed h), i), j) and k) is recommended to prepare checklists (forms inspection), in particular, to test the security tools that should be signed by the person that produced the test.
7.3 Declaration of noise
Noise measurement should be carried out in accordance with EN ISO 3746 and EN ISO 11202, depending on the situation. Manual measurement of the noise level is given in Annex B.
Declaration for propagating acoustic radiation in the air in accordance with EN 292-2/A1, paragraph A.1.7.4, item f). Declaration and verification of noise levels must comply with EN ISO 4871 and the recommendations specified in Annex B.
The declaration must be accompanied by information on the application of the method of measurement and the conditions at the time of measurement, as well as the values of the error K ((EN ISO 4871):
- 4 dB when using EN ISO 3746 or EN ISO 11202;
- 2 dB when using EN ISO 3744.
Thus, for example, the corrected sound power level L WA = 93dB (as measured) error of K = 4 dB for measurements that were carried out in accordance with EN ISO 3746.
Check the accuracy of the declared values of the noise level should be carried out in the application of the same method of measuring the same conditions as set out in the declaration.
The declaration of the noise must be accompanied by the following statement:
"These figures are the levels of radiation, but need not be considered safe operating levels. Despite the fact that there is a correlation between the emission and impact noise, they can not be reliably used to determine whether or not a further precaution.Factors that influence the actual level of noise exposure of workers to include the characteristics of the work premises, other sources of noise, etc., that is, the number of machines and other related processes. The permissible level of noise
exposure may be different depending on the country. Nevertheless, this information will give the user the best opportunity to assess the risks and dangers. "
Annex A (normative)
Measurement of noise emission
Operating conditions for noise measurement must meet or be equivalent to the conditions set out in Annex B.
Fixing the machine during the installation and operation must comply with the manufacturer's instructions and be identical for the measurement of sound pressure level emitted in the workplace and the sound power level.
The sound pressure level at the workplace should be measured in accordance with EN ISO 11202 under the following conditions:
- An indicator of acoustic environments K 2A or local indicator of acoustic environments K 3A should be no more than 4 dB;
- The difference between the background sound pressure level and sound pressure level at the workplace must be at least 6 dB;
- Local indicator of acoustic environments K 3A should be calculated in accordance with EN ISO 11204 (paragraph A.2, Appendix A) with reference to EN ISO 3746 instead of the method described in EN ISO 11202, Annex A, or in accordance with EN ISO 3744, where one of these standards as used in the measurement method.
Sound power levels should be determined in accordance with the method of measurement on the surface of the envelope specified in EN ISO 3746, subject to the following conditions:
- An indicator of acoustic environments K 2A should be less than 4 dB;
- The difference between the background sound pressure level and sound pressure level emitted by the machine at each measurement point must be at least 6 dB;
- Adjustment formula for this difference (EN ISO 3746, para 8.2) should be applied to a difference of 10 dB;
- Measurement of sound pressure level machine should be carried out at a distance of 1.0 m from the noise source;
- If the distance from the machine to an additional device is less than 2.0 m, additional equipment should be included in the specification of the machine;
- Measurement time required, according to EN ISO 3746, clause 7.5.3, namely, 30, should be excluded;
- Accuracy of less than 3 dB;
- The number of microphone positions shall conform to EN ISO 3746.
In cases where there is no interference sound power equipment can be measured with high accuracy in accordance with EN ISO 3744 without the above modifications.
The sound power level using sound intensity should be measured according to EN ISO 9614-1 (the use of this method should be agreed between the supplier and the consumer).
Annex B (normative)
Recommended test conditions for measuring the level of noise in the cutting machines and requirements to cut material
B.1 Recommended test conditions for measuring the level of noise on the cutting machines
To test the use of work-holding devices supplied with the machine.
All auxiliary components (for example, mechanisms for chip removal system coolant, hydraulic and lubrication systems) must be in working order when loading and testing at idle.
All safety equipment, and acoustic enclosures, usually supplied with the machine must be adjusted and the tests to be in working order.
For each series of tests to use new or newly sharpened cutting tool. The tests should be carried out according to the manufacturer's recommendations cutting tools.
Tooling and conditions for the noise measurement shall be representative of the machine. If you use a different speed cutting tool, it must be in the third quartile range (75% of the maximum spindle speed).
On the machine that is being tested, it should be a schematic drawing showing the location and details of any reflective surface with an impact on the level of noise emissions. Plans should also include the measurement point, which was recorded by sound power level and sound pressure level, as well as the usual workbench.
B.2 Requirements for the cut material B.2.1 Steel
The material of the workpiece to be low-alloy carbon steel (ISO 683-1) with the following chemical composition:
N - 0.35% - 0.5%;
Si - 0,15% - 0,4%;
Mn - 0,5% - 0,8%;
P - not more than 0.35%;
S - not more than 0.35%.
The material should be of standard quality and mechanical properties of the material must be in the following range:
yield strength s T 335 - 480 Nm -2 ; tensile strength s n 600 - 840 Nm -2 ; hardness of 170 - 215 HB.
B.2.2 Aluminum
The material of the workpiece to be of commercial quality aluminum alloy, e.g. AIMgSi1 (impure aluminum), with the following chemical characteristics:
Si - 0,75% - 1,3%;
Mg - 0,6% - 1,2%;
Mn - 0,4% - 1,0%.
Table B.1 shows the characteristics of the samples that are recommended to test various sizes of cutting machines to ensure the formation of a representative of noise, if the user can not by itself determine the model for the testing of the machine to the noise.
Table B.1 - The characteristics of the samples are recommended for testing of various types and sizes of cutting machines