Terminological definitions

In this programming manual, the following terminologies are used:

Polynom contouring: Curvature and direction-continuous connection of two traverse blocks.

Contour curve: Curve out of two polynomials of 4th order per axis.

Block lengths: The block lengths of the curve corresponding to the traverse block.

Corner distance: Distance of the start/end of the contour curve to the programmed target point/start point of a traverse block (see the following figure). The corner distance is always limited to half the block length. In a circular block, the corner distance is the arc length from the starting point of the contour curve up to the programmed end point of the arc.

Terminological definitions 1: — Fig. 4.29: Definition of corner distance

Pre-block: Traverse block before the contour curve

Post-block: Traverse block after the contour curve

Pre-distance: Corner distance of pre-block

Post-distance: Corner distance of post-block

Interim-point: Point at which the two partial curves of the contour curve border each other.

Corner deviation: The distance between the programmed corner point and the interim point of the contour curve (see the following fig.).

Terminological definitions 2: — Fig. 4.30: Definition of corner deviation

Programming example

Compare of programming G61 G261/G260:

%poly_G61 %poly_G261_1 %poly_G261_2 
N10 X0 Y0 G01 F1000 N10 X0 Y0 G01 F1000 N10 X0 Y0 G01 F1000
N20 X20 Y100 N20 X20 Y100 N20 X20 Y100
N30 G61 X40 Y100 N30 G261 X40 Y100 N25 G261
N40 G61 X60 Y20 N40 X60 Y20 N30 X40 Y100
N50 G61 X80 Y20 N50 X80 Y20 N40 X60 Y20
N60 G61 X100 Y100 N60 X100 Y100 N50 X80 Y20
N70 X120 Y100 N70 G260 X120 Y100 N60 X100 Y100
N80 X140 Y20 N80 X140 Y20 N70 X120 Y100
N90 X160 Y20 N90 X160 Y20 N75 G260
N100 M30 N100 M30 N80 X140 Y20
N90 X160 Y20
N100 M30