IEMCA BOSS 542 CNC, Руководство по эксплуатации и техническому обслуживанию

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74
6
USE AND OPERATION
302.034
6.4. BARS TO BE MACHINED - Characteristics and preparation
CAUTELA - PRECAUZIONE: do not feed bars having different sizes than
the manufacturer’s prescribed sizes.
Bar must not present a straightness defect above 0.5 per 1000.
❑
Solid bars
Check that there is not too much rag on bar head,
which might hinder insertion in the lathe collet.
Check that there is not too much rag on bar rear end,
which might hinder insertion in the bar-pusher collet.
In any case, to improve operation during this phase,
we advise to chamfer the bar as shown in the figure.
If bars with front remnant ejection have to be ma-
chined, we advise to chamfer the bar rear end as
shown in the figure.
If bars have to be machined having a diameter equal to
or only slightly smaller than the bar-pusher diameter, bar
rear ends should be machine-turned; diameter
D should
be suitable for the collet size installed in the bar-pusher.
❑
Pipes
If pipes have to be machined, their rear ends should be
chamfered as shown in the figure.
Table 1. Maximum bar length
Model Version Max. length mm (ft)
MINI BOSS
BOSS
34.103 Ec. 0
0.8 x D
60
°
D
34.104 Ec. 0
90
°
34.144 Ec. 0
D
34.145 Ec. 0
60
°