As shown in the workpiece view, the slope is 20 degrees and r is 2.5. First, you grind the slope of the workpiece accurately, and then the arc you want to make is the AC segment as shown in the figure. Obviously, because of the inclination, the circle O is tangent to the workpiece at points A and C, so what you want to repair on the grinding wheel is not a complete quarter circle (as shown in the figure, a complete quarter circle is the connection line of aob three points). If you repair the grinding wheel into a complete quarter circle when making this workpiece, there will be a step at two points of cb of the workpiece.

Then I will tell you a formula: R- sine angle XR (R minus sine angle multiplied by R).

Obviously, oa=ob=R in the figure, so the actual feed when you repair the grinding wheel is the figure obtained by this formula. This number should also be entered when the grinding wheel is repaired and touches the workpiece. Angle boc= the angle of the inclined plane of the workpiece is 20 degrees. I don't need to tell you how to cut when repairing the grinding wheel, do I? Then, after the grinding wheel is repaired, the side of the workpiece contacts the cutter, and the quantity calculated by the formula is calculated. Generally, when cutting, it is leveled at point C by experience.

Don't ask questions, I'll draw you a picture and explain what you don't know. I have nothing to say.

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