IEMCA MASTER 880 MP E-volution, Manual For Use And Maintenance

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2 - TECHNICAL INFORMATION MASTER 880MP E-volution
GB
2 - Pag. 19 / 19
2.7 FITTINGS - FOREWORD
The bar feeder may be provided with the fitting that is described below to increase its
performance and versatility.
2.7.1 Bush-holder device - Description
It is attached to the front part of
the bar feeder. Its function its to
reduce bar vibrations to a minimum,
by keeping the bar centered during
rotation through two half bushes A,
which are coupled to form a round
channel with a diameter just slightly
larger than that of the bar being
machined.
In many cases, this device can be
used (by only changing the
diameter of the half bushes) to
greatly extend the range of
diameters which can be machined without having to replace the guide channel.
OPERATION
• When the bar is dropped into the guide channel, the two half bushes are open.
• Closure is controlled by a pneumatic cylinder after the feeder has completed the bar feeding
cycle. Closure also controls lubricating oil flow for lubrication and machined bar support
purposes.
• When the bar-pusher approaches the device, the half bushes open up to allow its passage;
oil flow is then discontinued.