Corner Rounding Rnd - HEIDENHAIN TNC 370 User Manual

5 Programming Tool Movements
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5.4 Path Contours - Cartesian Coordinates
Corner rounding RND
The tool moves in an arc that connects tangentially
both with the preceding and the subsequent
elements. The RND function is useful for:
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Rounding corners
Fig. 5.34: Rounding radius R between Gl and G2
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Approaching and departing contours on a tangent
Input
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Radius of the arc
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Feed rate for RND
Prerequisite
On inside corners, the rounding arc must be large enough to accommo-
date the tool.
Fig. 5.35: Smooth approach with RND
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In the preceding and subsequent positioning blocks both coordinates should lie in the plane of the arc.
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The corner point @ is cut off by the ruunding arc
and is not part of the contour.
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A feed rate prugrammed in the RND block is effective only in that block. After the RNR block the previous feed
rate becomes effective again.
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TNC 370
5-25