IEMCA BOSS 338 HD, Руководство по эксплуатации и техническому обслуживанию, Страница: 39 / 214

2 - TECHNICAL INFORMATION Boss 338HD - 552HD
EN
2 - Pag. 23 / 23
2.6.1 Noise levels
The bar feeder does not cause acoustic noise.
The noise occurs when the lathe, to which the bar feeder is connected, is working and the bar
is rotating into the bar feeder guide channels.
In this case, the noise level depends on the following conditions:
• perfect alignment and levelling of the lathe-bar feeder unit;
• proper fixing to the floor both of the lathe and bar feeder;
• suitable bar gripping device fitted on lathe;
• use of a guide channel and a bar pusher with suitable dimensions as regards to the bar
diameter;
• use of a front guide bush of suitable diameter (if supplied);
• use of bars with a straightness within the set limits (maximum deflection in mm equal to 0.5
‰ of the bar length);
• use of a spindle liner having the same diameter as the bar feeder guide channel diameter;
• spindle rotation speed suitable for the material to be machined;
• as to the bar feeder, use of oil having features suitable for the diameter of the machined
bar;
• all bar feeder guards must be closed.
Should the above mentioned conditions be met, the noise level emitted during the bar rotation
into the guide channel, measured in compliance with the international standards, will be within
the following limits:
• brass and steel round bars within 80 * dB(A);
• hexagonal steel bars within 83 dB(A);
• brass hexagonal bars within 85 dB(A);
The noise level depends on the working conditions of the lathe to which the bar feeder is
applied as well as on the bar type.
Whenever necessary, operators must wear PPE (personal protective equipment) in accordance
with the regulations in force in the country in which the machine is installed.
• *) Measurements taken on round bar
Ø
35 mm, guide channel
Ø
36 mm, bar straightness <
5% at 3,750 rpm, on a Biglia B501 lathe, serial number.