Heidenhain CNC Pilot 4290 V7.1 Description of B and Y axes User Manual download pdf (Page 76)

1.15 TURN PLUS: XY Plane Contours

XY plane: Arc

This function defines a circular element in the XY plane.

Parameters

End point of the arc

X End point in Cartesian coordinates (radius)

Y End point in Cartesian coordinates

Xi Incremental end point

Yi Incremental end point

P End point in polar coordinates

a End point in polar coordinates (reference angle:

positive X axis)

Pi End point polar, incremental (linear distance from starting

point to end point)

ai End point polar, incremental (reference: Angle between an

imaginary line intersecting the starting point and parallel to

the X axis, and another line from the starting point to the end

point)

Center point of the arc

XM Center point in Cartesian coordinates (radius)

YM Center point in Cartesian coordinates

XMi Incremental center point

YMi Incremental center point

PM Center point in polar coordinates

b Center point in polar coordinates (reference angle:

positive X axis)

PMi Center point polar, incremental (linear distance from starting

point to end point)

bi Center point polar, incremental (reference: Angle between

an imaginary line intersecting the starting point and parallel to

the X axis, and another line from the starting point to the end

point)

Other parameters

R Arc radius

Tangential/nontangential: Specify the transition to the

next contour element

WA Angle between positive X axis and tangent in starting point of

arc

WE Angle between positive X axis and tangent in end point of arc

WV Counterclockwise angle between preceding element and

tangent in starting point of arc. If the preceding element is an

arc: Angle to the tangent.

WN Counterclockwise angle between tangent in arc end point

and following element. If the following element is an arc:

Angle to the tangent.

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Heidenhain CNC Pilot 4290 V7.1 Description of B and Y axes User Manual Page 76

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