Civil Engineering Reference
In-Depth Information
Fig. 1.5. A small turret milling machine will be found to be very useful in the small
workshop. This example by Warco is typical of this type of machine. It is quite easy to
fit a digital readout, a power feed attachment and a machine light to improve on the
machine's facilities.
A Bridgeport milling machine will usually have an X axis travel of 26in
(660mm) and a Y axis travel of 12in (300mm) although I think this may vary
slightly on some models. This will be sufficient for all but the largest models.
A typical medium-size, hobby-type milling machine will have an X axis
travel of about 19in (485mm) and a Y axis travel of 7in (175mm). A small
milling machine will have an X axis travel of about 13in (330mm) and a Y axis
travel of 5.5in (145mm). These dimensions will vary with different manufac-
turers and should be considered a starting point only.
When mounted in the dividing head, the traction engine wheel can be al-
most twice the diameter of the Y axis movement, as the wheel rim can be ro-
tated so that every part of the wheel can be beneath the centre of the milling
machine spindle.
You will also be able to do larger work on a turret milling machine than on
the vertical milling machine, as often the milling head can be moved in and
out on the machine's ram. (The ram is a large dovetailed slide on the top of
