Cuttermasters Professional JXT - Page 18

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CUTTERMASTER Professional JXT User’s Manual
Page 18
3.1 Grinding the Outside Flutes of Standard End Mills:
Primary and Secondary Angles
Set the Air Bearing Fixture Angle
Position Wheel and Stylus
1. Get organized. After organizing your grinding
project, mount the grinding wheel and check that
it is true and dressed (Chapter 1.6). Plated wheels
are not trued. Recommended wheel is a resin bond
11V9Caredcupwheel.UsetheCM-WTDWheel
Truing Device if the wheel needs to be trued.
2. Load the tool. Choose the appropriate 5C col-
let for your end mill and mount it in the air bearing
xtureandtightenthedrawbarrmly.Besurethat
collet, collet threads and and inner quill are devoid
of any dirt.
3. Set the Air Bearing Angle. Rotate your air bear-
ingxtureclockwiseto2°o󰀨of0°.Thiswillpermit
you to grind the end without changing the setup.
Slide the indexing ring all the way to the right of the
air spindle and lock the set screw. To avoid denting
the spindle don’t bear down.
4. Set the end mill ute on the stylus. Ensure that
the stylus height is set to the tool center (Chapter 3).
Adjust the stylus shelf assembly so that the primary
cutting lip is sitting on the tip of the stylus. You want
the stylus tip to be as close to the outside of the end
mill as possible while still clearing the grinding wheel
when grinding.
5. Set the grinding wheel head to your rst grind
angle. Match the existing grind angle on your tool
or use the diameter of your end mill to refer to the
End Mill Grinding Guide on the front of the base, for
the recommended angles. We will grind the primary
anglerstandtheclearanceanglesecond.
6. Bring the wheel to the stylus. Manuevering both
tables with the x and y table handles, position the
stylus so that it “splits” the middle of the edge of the
cup wheel. In other words, so that the stylus is di-
rectly in front of the edge of the highpoint of your
grinding wheel edge. Keep about a 1/2” (10mm) dis-
tancefromit.Youarenowreadytogrindyourrst
end mill.
Primary
Secondary
(clearance)