-28-
g0667X high precision Vs Vertical Mill
Rotating the Head Left or Right
1. disConnECt thE Mill FroM poWEr!
2. loosen the four rotation locking bolts on top
of the column shown in
Figure 31.
Figure 31. ram rotation locking bolts.
locking
Bolts
3. Manually rotate the ram around the column to
the desired position.
Note:
Take care not to entangle or stretch the
electrical cabling as you move the ram and
head.
4. re-tighten the four rotation locking bolts to
hold the ram in place.
Setting Spindle RPM
to select the correct spindle rpM for your milling
operation, you will need to: 1) determine the rpM
needed for your workpiece, 2) select the correct
spindle speed range, and 3) configure the spindle
speed controls for the calculated rpM.
Calculating RPM
1. use the table in Figure 32 to determine the
cutting speed required for your workpiece
material.
Cutting Speeds for High Speed Steel (HSS)
Cutting Tools
Workpiece Material
Cutting speed (sFM)
Aluminum & alloys
300
Brass & Bronze
150
Copper
100
Cast iron, soft
80
Cast iron, hard
50
Mild steel
90
Cast steel
80
Alloy steel, hard
40
tool steel
50
stainless steel
60
titanium
50
plastics
300-800
Wood
300-500
Note: For carbide cutting tools, double the cutting
speed. These values are a guideline only. Refer to
the MACHINERY'S HANDBOOK for more detailed
information.
Figure 32. Cutting speed table for hss cutting
tools.
