CHAPTER 1: BASIC NOTIONS 9
MOVE S2
The installation is a very important phase that, if neglected, could seriously impede the operation of the
bar feeder.
The distance between the bar feeder and the lathe influences greatly the quality of the guiding. The
further the bar feeder is from the spindle - and therefore, away from the clamping system - the larger the
non-guided part of the bar will be.
It is essential that the mounting of the bar feeder is done in accordance with the instructions indicated in
Chapter 3: Setting into operation.
The guiding channel of the bar feeder serves, by definition, to guide the bar outside the lathe. Although
the bar rotates in an oil bath inside the guiding channel, the alignment of the channel with the axis of the
spindle must be perfect.
It is essential that the alignment of the bar feeder is done in accordance with the instructions indicated in
Chapter 3: Setting into operation.
In some cases, the length of the spindle may influence the quality of the guidance.
The best results are obtained when the bar is guided with precision (2 mm). The greater the reduction of
the clearance between the bar and the tube, the greater the rotation speeds will be.
When the clearance between the bar and the tube becomes too great, a rupture of the oil film occurs
which results in the reduction of the rotation speeds permitted.
While the rear of the bar is maintained by front rest of the bar feeder and the front by the collet or the
chuck of the lathe, it is possible for the portion of the bar inside the spindle to oscillate, if the clearance is
too great.
It is, therefore, highly recommended to install reduction liner inside the spindle as indicated in the start up
manual.
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