Pick first Arc Center (Fillet Surface)

When the arc centers are calculated and displayed on the screen, EZ-CAM prompts you to pick the first arc center.

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The point selected is significant for two reasons. First, it designates the [0,0] point of the surface. This is where the system begins a tool path calculation if the fillet surface is machined separately. Second, the selected first arc center is the point at which the fillet surface has the radius entered in the First Fillet-R parameter.

EZ-Mill then prompts you to pick a known fillet point. This is a point on the fillet surface where the fillet radius is a known value. If you wish to specify a radius for a given point, specify the Radius in the Value Entry Box, then select the point. EZ-Mill will continue to prompt for a known fillet point until you press the Enter key. If the fillet surface should have a constant radius value, then enter this value in the First Fillet-R parameter and the Last Fillet-R parameter, and press Enter when the Pick known fillet point prompt is displayed the first time. The Enter key will begin the construction of the surface, which may take some time, depending on the Arc Step and Tolerance parameters.

For our last example, let's take a look at a variable radius fillet. The surfaces we've chosen for this example are a canted plane and an arched ruled surface.

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The fillet surface will be created between the canted plane and the arched ruled surface which the plane intersects at an angle. This fillet surface will have a first radius of 0.6, and a last radius of 0.6. The only other known radius point in this example is a .25 radius arc at the top of the arched surface.

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Now take a look at the completed fillet surface.

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