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1. AXIS CONTROL
B-64693EN-1/01
- 282 - where Compensation angle: Signed absolute value (deg) : Amount of travel on the Z-axis after the specification of G81 P : Signed gear helix angle (deg) π
: Circular constant T : Number of teeth Q : Module (mm) or diametral pitch (inch -1 ) Use P, T, and Q specified in the G81 block. Machine coordinates Absolute coordinates During helical gear compensation Bit 7(HAD) of parameter No.7731 = 0 = 1 Synchronization cancel During helical gear compensation
- Direction of helical gear compensation The direction depends on bit 2 (HDR) of parameter No. 7700.
When HDR = 1 +C C : +, Z : +, P : + Compensation direction:+
(a) - Z
+Z +C C : +, Z : +, P : - Compensation direction:-
(b) +C C : +, Z : -, P : + Compensation direction:-
(c) +C C : +, Z : -, P : - Compensation direction:+
(d) - Z
+ Z
C : -, Z : +, P : + C : Compensation direction:-
(e) - C
C : -, Z : +, P : - Compensation direction:+
(f) - C
C : -, Z : -, P : + Compensation direction:+
(g) - C
C : -, Z : -, P : - Compensation direction:-
(h) - C
When HDR = 0 ((a), (b), (c), and (d) are the same as when HDR = 1)
-Z + Z
C : -, Z : +, P : + Compensation direction:+
(e) - C
C : -, Z : +, P : - Compensation direction:-
(f) - C
C : -, Z : -, P : + Compensation direction:-
(g) - C
C : -, Z : -, P : - Compensation direction:+
(h) - C
Fig. 1.9.2 (c) Direction of helical gear compensation
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