| THIS SMALL, COMPACT BRAKE CONTROLLED UNIT IS THE PRACTICAL CHOICE FOR BOTH LARGE AND SMALL SHOPS REQUIRING FAST TRUING OF SUPERABRASIVE WHEELS. IT CAN BE MOUNTED ON ALMOST ANY GRINDING MACHINE USING EITHER A MAGNETIC CHUCK TABLE OR WITH SCREWS TO A FIXTURING DEVICE. ADVANCED CONSTANT DRAG CENTRIFUGAL BRAKE CONTROLS PRECISION DRESSING. RIGHT ANGLE RELEASE MINIMIZES CHIPPING AND ABRASIVE LOSS. |
DRESSER WHEEL SIZE: 3"OD x 1"WD x 1/2" HOLE
REPLACEMENT WHEEL PART No. 3112V6...$12.00
FURNISHED WITH: HANDLE,WRENCH, AND WOODEN BOX
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Brake-controlled Truing Devise; Can be used to true straight, cup and cylinder wheels. Flaring cup wheels or straight wheels used on a tool and cutter grinder seldom require truing. However, if an exceptionally good finish is required on the ground part, the brake controlled truing devise can be mounted in a vertical position and used to true these wheels.
The brake-controlled truing devise wheel whose speed is controlled by brake shoes. These shoes are adjusted to limit the surface of the wheel to between 1000 and 1500 surface feet per minute (SFPM). Mount the devise with its wheel spindle parallel to the spindle of a straight wheel. Mount it perpendicular to the spindles of cylinder or cup wheels. The correct wheel specification is determined by the grit size and bond type of the diamond wheel to be trued.
Bring the diamond wheel and truing wheel together until they almost touch. Turn on the diamond wheel (at normal grinding speed). Start the truing wheel turning in the same direction as the diamond wheel. At the point of contact. Bring the two wheels together until they just touch. Be sure the truing wheel is spinning when it make contact with the diamond wheel. The rubber eraser of a pencil or a small wooden stick can be used to keep the truing wheel turning without getting your fingers too close to the diamond wheel.
The brake-controlled truing devise is always used dry. Traverse the wheel back and forth at 30 to 60 inches per minute. Downfeed .0005 inches to .001 inches at the end of each traverse. The truing wheel should run off the diamond wheel after each traverse to avoid chipping the edges of the diamond wheel. Heavier feeds or faster traverse may crown the diamond face. During the last few passes, reduce the down feed to .0005 inches per pass.
When using the brake-controlled truing devise, the only movement between the two wheels is traverse. Do not operate the work table on a rotary or reciprocating table traverse surface grinder.
When the truing operation has been completed, there will be a smooth, continuous contact and firing throughout each traverse stroke. Visual inspection of the diamond section will show an even appearance around the wheel. A reading with a dial indicator will show no runout. |
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