Protection Against Accidental Contact With The Blade; Electrical Equipment; Emergency Devices - Tiger 370 CNC--MR Use And Maintenance Manual

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Protection against accidental contact with the blade

1. Metal disc cover fixed to the cutting head;
2. mobile protection of the disc attached to the guard, in order to guarantee
cover of the blade and to leave only the part of the disc used for cutting free
as required by President's Decree 547/55 article 108;
3. vice with double---blocking anti---burr device to securely grip the workpiece;
4. the cutting and infeed vice is controlled by pneumatic devices, with maximum
6 mm stroke; the jaw which clamps the piece must be aligned to the part to be
processed at a distance of 2÷3 mm;
5. Access to the cutting zone is bounded by a door fitted with a timed lock,
which allows it to be opened only 5 or 10 seconds after the processing cycle
has stopped;
6. the cutting material supply is protected by a sheet---metal casing, which can be
opened, that is fitted with a Perspex window to check the cutting operations.
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Electrical equipment

In accordance with Italian standard CEI 60204---1, April 1998, derived from
European Standard EN 60204---1 publication IEC 204---1, 1997:
24 Vac Control voltage for actuators, in accordance with chapter 6 of European
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Standard "Control and indication circuits" paragraph 2 "Control Circuits" sub- -sec-
tion 1 "Preferential voltage values for control circuits";
plant protected against short circuits by quick blowing fuses and earthing of all
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work and accidental contact parts;
Protection from accidental start- -up by a minimum voltage relay in the case of
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power failure.

Emergency devices

In accordance with Standard CEI 204---1:
Chapter 5 Section 6 Sub- -section 1 "Emergency stop device": "the emergency
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stop device immediately stops all the dangerous and other functions of the ma-
chine".
Chapter 6 Section 2 Subsection 4 point 7 "Safety guards": "the removal of
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safety guards protecting dangerous parts or zones of the machine causes the ma-
chine to shut down immediately. When the guards are returned to their original
position the machine must be reset in order to resume work".
...Emergency devices applicable to the TIGER 370 CNC---MR:
1. Emergency stop: a non---return mushroom---head pushbutton, colour red on
yellow background, is located on the control panel of the machine. To release
the pushbutton, the actuator must be rotated 45° . After the emergency situ-
ation has been resolved, the machine must be reset.
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Safety and accident prevention
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