
Cylindrical Grinding Fixed Cycles
Chapter 17
17-23
If no value is entered for Q then no shift is made. If a value greater than or
equal to X is entered, then the shift is made only to the last plunge point
defined by X. If the sign of the value entered here sends the axis away
from the last plunge point instead of towards it, an error is generated.
L, F, E, P, and D -- These parameters were described on page 17-9.
The format for the G85 cycle is as follows:
G18;
G85Z__K__X__Q__L__F__E__P__D__;
Table 17.E summarizes the G85 cycle parameters. For a detailed
description of these parameters, see the text below and page 17-9.
Table 17.E
G85 Cycle Parameters
Parameter: Definition: Default Value: PossibleValue:
Planeaxis1
3
lastplunge point none (plunge atstartonly) abs.or inc.
Planeaxis1 integrand
3
ditheramount zero inc.only
Planeaxis2
1
plunge depth valuemustbeprogrammed abs.orinc.
Q
3
plunge shift zero inc.only
L
3
numberof spark-outpassesor revolutions zero zeroto999
F
2
plunge feedrate lastfeedrateprogrammed valid F word
E
3
ditherfeedrate plunge feedrate validF word
P
3 forG85 2 forG85.1
dressprogramnumber from last cycle programmed valid programnumber
D
3
numberof auto-dressexecutions zero zero to 999
1
mustbe programmed
2
musthave been programmed i n some previousblock if omitted
3
optional
Figure 17.6 shows t he axis motions that make up the G85 multi-pass
diameter grinding cycle. This figure assumes that the ZX plane (G18) is
active.
17.7
G85 or G85.1 Multi -pass
Diameter Grinding (Axis 2)
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