
B-63323EN-1/03 9.SPINDLE FUNCTION
- 887 -
- Peck Rigid Tapping Cycle
Tapping a deep hole in rigid tapping mode may be difficult due to chips
sticking to the tool or increased cutting resistance. In such cases, the
peck rigid tapping cycle function can be specified. In this cycle, cutting
is performed several times from point R to point Z.
After positioning along the X-and Y-axes, rapid traverse is performed
to point R. From point R, cutting is performed with depth Q (depth of
cut for each cutting feed). Then, the tool is retracted by distance d set
in parameter No. 6221. The retraction can be overridden by the setting
made in parameter No. 5883. Once point Z has been reached, the
spindle is stopped, then rotated in the opposite direction for retraction.
(The only difference between G84.2 and G84.3 is the direction of
spindle rotation.)
EPeck rigid tapping cycle
(1) : Cutting feedrate of the F command
(2) : Override can be performed by the
parameter.
G84.2 EG84.3 @(G98) G84.2 EG84.3 @(G99)
G84.2 (or G84.3) X_ Y_ Z_ R_ P_ Q_ F_ L_ S_ ;
X_ Y_ : Hole position data
Z_ :
The distance from point R to the bottom of the hole and the position of the bottom of the hole
R_ : The distance from the initial level to point R level
P_ : Dwell time at the bottom of the hole and at point R when a return is made
Q_ : Depth of cut for each cutting feed
F_ : The cutting feedrate
L_ : Number of repeats (if required)
Initial level
d
Point Z
Point R
q
q
q
d
(1)
(2)
Point R level
d
Point Z
Point R
q
q
q
d
(1)
(2)
Point R level
d=retraction distance
S_ : Spindle speed
: Rapid traverse
: Z axis feed
: Dwell
P