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ALL RQC STYLE SHAVE TOOL HOLDERS ARE
DESIGNED FOR A ZERO DEGREE FRONT CLEARANCE ANGLE AND 2.5 DEGREE TOP RAKE,
THEREFORE, INSERTS MUST BE OFFSET AT 2.5 DEGREES IN RELATION TO THE TOP
AND BOTTOM FACES WHEN BEING EDM MACHINED AND STEP CORRECTIONS CALCULATED
ACCORDINGLY.
ALSO INSERTS MUST BE A PARALLELOGRAM
FORM, THEREFORE, BACK SURFACE MUST ALSO BE AT 2.5 DEGREES PARALLEL TO
FORMED FACE.
INSERTS ARE OVERSIZE ON LENGTH AND
WIDTH TO ALLOW FOR EDM WIRE THICKNESS AND ARE RECESSED ON BACK END FOR
MOUNTING IN THE GRINDING FIXTURE SO THAT BACK EDGES CAN BE MACHINED AT THE
SAME TIME AS FORMED SURFACE WITHOUT REMOVING FROM FIXTURE.
FIXTURE IS SUPPLIED WITH TWO WEDGE
CLAMPS:
CLAMP MARKED "4" IS USED
WHEN HOLDING 3 INSERTS AND 1 SPACER.
CLAMP MARKED "3" IS USED
WHEN HOLDING 3 INSERTS ONLY.
INSERTS SHOULD BE CAREFULLY MOUNTED
IN FIXTURE WITH APPROPRIATE CLAMP AND TIGHTENED SECURELY WITH CLAMP
SCREW. BE CERTAIN THAT INSERTS ARE FULLY SEATED IN BOTTOM 2.5 DEGREE
ANGLE BASE OF FIXTURE. THIS IS IMPORTANT BECAUSE IF FACE ANGLES ARE
NOT EXACTLY 2.5 DEGREES, THERE MAY BE DIAMETRAL DIFFERENCE ERRORS IN THE
WORKPIECE.
ALSO, INSERTS SHOULD BE IN ALIGNMENT
WITH EACH OTHER AND CLEARANCE ANGLE CUTOUT IN INSERT SHOULD BE CENTERED ON
FIXTURE WITH EQUAL SPACE ON BOTH SIDES OF FIXTURE BODY.
WHEN WIRE EDMing, WE RECOMMEND
PLACING THE SPACER IN THE MIDDLE POSITION AND MACHINING ALL THE WAY AROUND
THE FORM STARTING ON THE LEFT SIDE IN THE SPACE BETWEEN THE FIXTURE AND
THE RECESS IN THE INSERT AND ENDING IN THE GROOVE ON THE OPPOSITE SIDE
(SEE SAMPLE PRINT ATTACHED). THIS GROOVE PREVENTS OUTER SHELL FROM
BREAKING OFF AND JAMMING WIRE. SHELL SHOULD BE BROKEN OFF MANUALLY
AND ANY REMAINDER GROUND AWAY SO THAT IT DOES NOT INTERFERE WITH SEATING
OF INSERT IN HOLDER.
FOR RQCDS-A, RQCDS-SL, RQCDS-DV
AND RQCMS-0 HOLDERS:
IN ORDER TO SIMPLIFY ADJUSTMENT OF
THE INSERT SLIDE WHEN CHANGING OVER FROM JOB TO JOB, HOLDERS ARE DESIGNED
SO THAT A .875" LONG INSERT WILL CUT TO CENTER OF THE PART
(.000" BASE DIAMETER). THEREFORE, ALL INSERTS SHOULD BE
DESIGNED USING .000" AS THE BASE DIAMETER. THIS WILL CAUSE THE
INSERT TO BE CORRESPONDINGLY SHORTER FOR ALL OTHER DIAMETERS, OR SLIGHTLY
LONGER IF FACING PAST CENTER. SEE SAMPLE INSERT DESIGN.
FOR RQCMS-1 HOLDER:
THIS HOLDER IS DESIGNED SO THAT A
.875" LONG INSERT WILL CUT .125" DIAMETER ON THE PART.
THEREFORE, ALL INSERTS SHOULD BE DESIGNED USING .125" AS THE BASE
DIAMETER INSTEAD OF .000".
ENCLOSED ARE MASTER INSERT DESIGN
SHEETS FOR 1-1/8" WIDE INSERTS. ADDITIONAL SHEETS ARE AVAILABLE UPON
REQUEST. CLICK HERE TO VIEW ANOTHER PRINT.
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