Owner manual

workpiece/wheel
Insideangle
(lessthan 180
°)
Outsideangle
(greaterthan180
°)
workpiece/wheel
Dresser/Wheel Radius Compensation
Chapter 15
15-2
Terms Used
We use t he following terms in this chapter:
Ifyo u see: Itmeans:
inside ananglebetweentwo intersectingprogrammedpathsisreferredtoas inside if,
in thedirectionoftravel,theangle measuredclockwisefrom the secondpath
intothe first is less thanor equalto 180degrees. Ifone or bothof the moves
arecircular,the angle is measured froma line tangentto thepath attheirpoint
ofintersection.
outside an angle between twointersecting programmed paths isreferredto as outside
if,in thedirection of travel,theangle measuredclockwisefromthe secondpath
intothe first is greater than 180 deg rees. Ifoneorboth of themoves are
circular, theangleismeasuredfroma line tangenttothe path(s)at theirpoint of
intersection.
r dresserorwheel radius
CR cross-pointbetweentwoprogrammedpaths afterthedresser/wheelradius
compensationis activated
When programming a CNC, the part program is actually the reference
position of a control point on the grinding wheel relative to the active
coordinate system. Your system installer establishes this control point by
establishing a machine gauge point combined with your active wheel
length offsets.
Generally diamond-point dressers and the corners of the grinding wheel
have rounded edges that often result in a difference between the actual
machining edge and the control point. This inevitably causes a difference
between the programmed contour and the actual final contour of the part or
dressed wheel (see Figure 15.1).
Use the dresser/wheel radius compensation feature to compensat e for this
difference. This feature allows you to use a wheel and diamond point
dresser with different radii without modifying the part program.
15.1
Introduction to
Dresser/WheelRadius
Compensation