Grizzly Gear-Head G9036 - Manual (Page 35)

Model g9036 Mfg. 7/08+
-33-
tool post
the tool post included with the Model g9036 is
a four-way tool post. the tool post is mounted on
top of the compound slide, and allows a maximum
of four tools to be loaded simultaneously.
the four-way tool post allows for quick indexing
to new tools. this is accomplished by rotating the
top handle counterclockwise and then rotating the
tool post to the desired position. rotate the top
handle clockwise to lock the tool into position.
to load the tool post:
1. Choose the desired cutting tool.
2. loosen the tool post bolts so that the cutting
tool can fit underneath the tool post bolts.
3. use a minimum of two tool post bolts to hold
down the cutting tool and tighten firmly (see
figure 48).
figure 48. tool post bolts.
tool post
Bolts
4. repeat steps 1–3 for the three remaining
openings, as needed.
spindle speed
the correct spindle speed is determined by the
workpiece material, the type of tooling used, and
the desired finish. refer the chart in
figure 49
and the instructions below for calculating the cor-
rect spindle speed for your application.
to calculate the correct spindle speed:
1. use the chart in figure 49 to determine the
cutting speed required for the workpiece
material.
Recommended Cutting Speeds
Work Material
Magnesium
Aluminum
Brass & Bronze
Copper
Cast Iron (Soft)
Cast Iron (Hard)
Mild Steel
Cast Steel
Tool Steel
Alloy Steels (Hard)
Stainless Steel
Titanium
Hi Maganese Steel
Average Tool Speed (sfm)
Rough Cuts
Finish Cuts
400
350
250
100
100
50
100
70
50
50
60
90
40
800
700
500
250
250
150
250
150
150
150
180
200
100
Note: These values are based on HSS cutting
tools. For carbide cutting tools, double the aver-
age speed. These values are a guideline only.
Refer to the MACHINERY’S HANDBOOK for
more detailed information.
figure 49. Cutting speed chart.
2. determine the final diameter, in inches, for
the cut you are about to take.
note: For this step, you will need to aver-
age out the diameters or work with the finish
diameter for your calculations.