Civil Engineering Reference
In-Depth Information
Fig. 1.11. If you have a particularly large rim to drill or machine, you can swivel the
machine's head and ram away from the knee of the machine and put the rim over the
surrounding table. You will have to use a location fixture, possibly locating from the
previously drilled spoke holes, to drill the strake holes. It takes a bit of figuring out but
it can be done. I had a rim about 2ft diameter for a packaging machine which re-
quired about 42 tapered slots milled in it, and after a lot of thought this was the meth-
od I came up with to do it. It worked perfectly well.
OTHER FEATURES
A digital readout is often seen as an extra add-on to a milling machine, but I
consider it an essential feature. Whether you use a simple scale system simil-
ar to a digital vernier scale or a full readout with glass or magnetic scales, you
should always buy a machine with a readout fitted or fit a digital readout to
your mill. You will never regret it (simple instructions for fitting a digital readout
to a milling machine are given in
Chapter 2
). Although the readout shown was
fitted to a specific machine, the principles of fitting the readout apply to many
different milling machines.
A power feed and a soluble cutting oil supply are desirable, but by no
means essential, features on any milling machine.
