System information

SECTION FOUR - PREPARATORY FUNCTIONS (G CODES)

Right-hand soft tapping cycle (G84)

G84 G98/G99 Z___ R___ B___ P___ F___

The G84 command specifies the right-hand tapping cycle. At each axis position this cycle will do

the following.

3. Dwells before reversing (specified by the B command)

1. Rapids to point R

2. Feeds to point Z

4. Reverses spindle (CCW)

5. Dwells after reversing (specified by the P command)

6. Feeds to point R

7. Reverses spindle (CW)

8. Rapids to initial point, if specified by the G98 code

Note: During tapping the feedrate override and spindle override switches are ignored. Once

the tap cycle is started, it does not stop until the tap is completed if block mode is applied.

If feedhold or halt is applied, the tap will stop when it is out of the hole.

Tapping Feeds and Speeds

= LEAD

PITCH

400 x .05 = 20 (feedrate)

RPM X LEAD = FEEDRATE

Example: 1/4-20 tap, spindle rpm 400

1/20 = .05 (lead)

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