The format for the g84 cycle is as follows – Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set User Manual

Page 594

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Cylindrical Grinding Fixed Cycles

Chapter 17

17-20

The format for the G84 cycle is as follows:

G18;
G84X__I__Z__Q__L__F__E__P__D__;

Table 17.D summarizes the G84 cycle parameters. For a detailed
description of these parameters, see the text below and page 17-9.

Table 17.D

G84 Cycle Parameters

Parameter:

Definition:

Default Value:

Possible Value:

Plane axis 1

1

plunge depth

value must be programmed

abs. or inc.

Plane axis 2

3

last plunge point

none (plunge at start only)

abs. or inc.

Plane axis 2 integrand

3

dither amount

zero

inc. only

Q

3

plunge shift

zero

inc. only

L

3

number of spark-out passes or revolutions

zero

zero to 999

F

2

plunge feedrate

last feedrate programmed

valid F word

E

3

dither feedrate

plunge feedrate

valid F word

P

3 for G84 2 for G84.1

dress program number

from last cycle programmed

valid program number

D

3

number of auto-dress executions

zero

zero to 999

1

must be programmed

2

must have been programmed in some previous block if omitted

3

optional

Figure 17.5 shows the axis motions that make up the G84 multi-pass face
grinding cycle. This figure assumes that the ZX plane (G18) is active.

17.6
G84 or G84.1 Multi-pass
Face Grinding (Axis 1)

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