System information

SECTION FOUR - PREPARATORY FUNCTIONS (G CODES)

Things To Remember When Estimating Points

• Estimating can be used with line to circle, circle to circle, and circle to line paths.

• The center and radius of arcs cannot be estimated.

• For line-to-circle and circle-to-line, the start and end point estimates should lie on the

line; i.e. the slopes of the lines entering or leaving the arc must be correct.

• If a line intersects an arc at two points, the estimated point should be closer to the desired

point of intersection.

• If the above conditions are met, there is no limit on how far the estimated point is away

from the correct point.

• When estimating the intersection of one arc to another arc, the easiest point to pick on an

arc is at one of the quadrant points (0

°, 90°, 180°, or 270°).

The following is a brief discussion on cutter compensation and Trig Help when Trig Help is used

to bring a line tangent to an arc.

Sample Program:

G41 D1

G65 X1 Y8

Z-1

X0 Y0

X2 Y6 (This line is pulled in tangent.)

G2 R3 XC7 YC3 X12 Y6

G1 X15 Y0

G65 X0 Y0

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