Cuttermasters Professional JXT - Page 12

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CUTTERMASTER Professional JXT User’s Manual
Page 12
1.6 Grinding Wheel Truing & Dressing
Wheel Truing Device
Spindle Mounted (Hand Held Available)
Wheels must always be dialed in and prepped.
The tool spindle hubs have less than .0005” run out --- we are at the mercy of the motor manufactur-
ers,thereforethebestnishisalwaysgoingtobefromawheelthathasjustbeentruedinplace.
Upon completion of the mechanical truing process (run out), a brake truing device, single point dia-
mond dresser, diamond nib, metal bonded wheel, or rotary diamond dresser will be used to complete
the trueing process for all bonds except plated. With one of the aforementioned devices, true until
you have achieved a reading on the indicator of 0.0005 inches. The abrasive and the bond type are
the most important criteria for deciding the type of trueing and/or dressing system to use. For trueing
only with a point contact, never in-feed more than 0.0005” (0.013mm) per pass for super abrasives
(CBN or Diamond), or more than 0.0015” (0.04mm) per pass for conventional abrasives.
We recommend our CM-WT Spindle Mounted Truing
Device to true our resin bond cup wheels. The CM-WT
is a very easy to set up abrasive wheel system and a
simpler solution to truing your bonded wheels. This
dynamically braked abrasive truing wheel is specially
formulated for grinding CBN and diamond resin bond
wheels into true. It is designed to be used with tool
grinders where it is convenient to hold the truing as-
sembly in a collet or chuck. It is available with a handle
for hand held truing. The CM-WT is more complicated
than it looks, it has three bearings in it and a 10,000
RPM Desmond wheel that will do a great job bringing
yourwheelintotrue.Mountitinthecolletandbringitpastthewheelinsuchawaythatitcanscu󰀨it
into true. The nylock nut should be adjusted so that there is light resistance (ie. the wheel wont rotate
freely).
Conventional abrasives (aluminum
oxide and silicon carbide) can be trued
and dressed at the same time, using a
single point dresser. The conventional
abrasive is quite friable (friability = ease
with which an abrasive fractures). This
means a quality diamond with a carat
size appropriate for the diameter of the
wheel, thickness of the wheel and abra-
sive grain size should be used.
Dressing: Once the wheel has been
trued, dressing brings the grit media
proud above the resin substrate. Use
an Aluminum Oxide dressing stick for
resin bond wheels. Use a Silicon car-
bidedressingstickforvitriedwheels.