Peck Drilling Cycle G83 | NCT Group 2000M, 99M instruction

17.1.7 Peck Drilling Cycle (G83)

Fig. 17.1.7-1

The variables used in the cycle are

G17 G83 Xp__ Yp__ Zp__ R__ Q__ E__ F__ L__

G18 G83 Zp__ Xp__ Yp__ R__ Q__ E__ F__ L__

G19 G83 Yp__ Zp__ Xp__ R__ Q__ E__ F__ L__

The oprations of the cycle are

1.rapid-traverse positioning in the selected plane

2.-

3.rapid-traverse movement to point R

4.-

5.drilling to the bottom point, with feed F

6.-

7.with G99, rapid-traverse retraction to point R

8.-

9.with G98, rapid-traverse retraction to the initial point

10.-

Description of drilling operation 5 is as follows:

–drilling the depth specified at address Q, with feed,

–rapid-traverse retraction to point R,

–rapid-traverse approach of the previous depth as far as the clearance amount specified on address E,

–drilling depth Q again, reckoned from the previous cut-in, with feed F (displacement E+Q),

–rapid-traverse retraction to point R.

The above procedure is carried on as far as the bottom point specified at address Z.

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