Emco compact 8, Инструкция / Перечень запасных частей

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Toolpost Grinder
This attachment is an independent unit with its own
motor ( 150 W capacity) and fits on the top slide in
place of the tool holder. It can be used for both inter­
nal and external grinding. The grinding spindle runs
on precision bearings. Care should be taken to avoid
damaging this spindle.
Shifting of the belt gives three speeds, 4500, 8000 and
12.000 rpm.
Working with the tool post grinder
The motor and grinding wheel i spi n dle have three belt pulleys each. By shifting the belt, 3 speeds can be ob­
tained: 4500, 8000 and 12.000 rpm. The belt should only be moderately tightened to avoid unnecessary
power consumption and wear.
Dressing and truing of the grinding wheel
To obtain a perfect finish on the workpiece to be
ground, it is essential to true the grinding wheel with
a truing diamond prior to every grinding operation.
Clamp the truing diamond on the lathe chuck (see
sketch) so that the diamond will be level with the
height of the centres and pointing forward. To prevent
the lathe chuck from turning during the truing opera­
tion, engage the lowest headstock gear. Set and run
the toolpost grinder at 4500rpm.
Move the revolving grinding wheel close to the point
of the truing diamond - just touching. Feed 0,05mm
with the cross support and carry out the truing opera­
tion with the saddle. This oper -:it ion should be
repeated until the grinding whe8I is completely clean
over its entire periphery. Never apply more than
0,05mm, otherwise the truing diamond can be
damaged.
Feeds and Speeds for Grinding
Cutting Speed: 15 - 25m/sec
Grinding wheel speed:
External grinding:
Internal grinding:
Surface speed of
the workpiece:
4500rpm
8000 or 12.000rpm
10 - 15m/minute
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