Clarke Metalworker CL251MH, Инструкция по эксплуатации и обслуживанию

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2. Lower the Head complete, using Handwheel ‘A’, until the Mill is a few millimetres
from the workpiece.
3. Turn the handwheel ‘B’ clockwise until the Mill just comes into contact with
the workpiece, then very carefully zero the scale by holding the handwheel
steady and turning the scale independently so that the ‘0’ lines up with the
mark provided on the head.
The machine is now set and prepared for accurate Milling to a specific depth.
Switch ON the Mill (refer to the ‘Starting’ procedure in the Lathe manual).
Turn the handwheel ‘B’ clockwise, observing the scale.....one graduation is
equivalent to 1mm in depth.
It is important to set the spindle speed correctly, according to the job in hand. A
knowledge of Cutting Speeds is therefore necessary.
It is not intended for this booklet to be a tutorial on Milling and Drilling procedures It
is strongly recommended therefore that you consult a suitable reference book on
the subject. Nevertheless, a brief summary is given below as a basis on which to
begin.
Accurate Drilling
Drilling accurately to a predetermined depth is possible using the Spindle Lowering
lever. A scale shown in Fig.6 is provided, one division of which is equivalent to 1mm
in depth.
Fig. 6
Bring the drill so that it is just in contact with the workpiece using the HEAD Lowering
handle. Slacken the screw securing the scale and turn it the required number of
divisions, corresponding to the depth of desired cut, and secure in this position. i.e
if the drilling depth is 15mm, the 15th division mark should be opposite the zero
mark on the body.
The Spindle lowering lever may now be turned to the required depth for repetitive
drilling if desired.