IEMCA SIR52 MS52 P, Manual For Use And Maintenance

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10 - DRILLING MACHINE SIR 52 MS52 P/F
EN
10 - Pag. 9 / 20
10.2.3 APPLICATIONS OF DRILLING MACHINE
A drilling machine can drill bars from Ø 20mm (using a Ø 15drilling tool) up to Ø52 (using a
Ø15 or a Ø20 drilling tool). By means of a suitable drilling tool and of accurately set drilling
parameters, if is possible to drill metal bars the hardness of which can reach 250 HB.
The hole diameter should in no way be smaller than 10 mm so as to allow the tube gripper to
hold the bar correctly, and should not be larger than 20 mm otherwise the spindle nominal
power would be exceeded during machine operation 3000 rpm..
DANGER-WARNING
The drilling device is not suitable for the preparation of inflammable material
bars.
CAUTION
The customer will need to install a suction system with continuous suction and a
minimum capacity of 36 m
3
/h.
Air must be filtered for oil separation before being reintroduced in the
environment.
ATTENTION!
For a correct use of the lubrication system, the drilling tool and the tool holder
should be provided with an axial opening for the nebulized lubricant. Should the
operation area not be properly lubricated, the tool lifetime as well as the
lubrication system seals cannot be ensured and the hole could not be properly
carried out.
For a correct operation, make sure the hole is coaxial to the bar.
It is necessary that the bar end is a little chamfered (the bar end surface should be larger than
the hole to be drilled) and perpendicular to the bar axis. The bar drilling unit has been built so
as to prepare symmetrical bars, in case of bars with a not-circular section (hexagonal or sqare
types), contact the IEMCA service centre to set correctly the device. For what not included here,
refer to the limits indicated in the bar feeder instructions.
DANGER-WARNING
It is also important to check at regular intervals that the spindle guide system
has no backlash which would not ensure a correct drilling position.