Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Uživatelský manuál stáhnout pdf (Strana 573)

100

101

Surface Grinding Fixed Cycles

Chapter 16

16-23

The format for the G86 cycle is as follows:

G17(XY);

G86Z__K__X__I__Y__Q__L__F__E__P__D__;

G18(zx);

G86Y__J__Z__K__X__Q__L__F__E__P__D__;

G19(YZ);

G86X__I__Y__J__Z__Q__L__F__E__P__D__;

Table 16.F summarizes the G86 cycle parameters. For a detailed

description of these parameters, see the text below and page 16-8.

Table 16.F

G86 Cycle Parameters

Parameter: Definition: Default Value: Possible Value:

Non-planeaxis

reciprocationprimaryreversalpoint from last cycle programmed abs. or inc.

Reciprocation axis integrand

reciprocationsecondaryreversal point from last cycle programmed abs.or inc.

Planeaxis1

crossoveramount fromlast cycle programmed abs.orinc.

Planeaxis2

plunge depth fromlast cycle programmed abs.orinc.

Planeaxis2 integrand

plunge pickat start fromlast cycle programmed inc.only

plunge pickat crossover plunge pickat start inc.only

numberof spark-outpasses zero zeroto 999

plunge pickand crossoverfeedrate lastfeedrateprogrammed valid F word

reciprocationfeedrate from last cycle or last F valid F word

3 forG86 2 forG86.1

dressprogramnumber from last cycle programmed valid programnumber

numberof auto-dressexecutions zero zeroto 999

mustbe programmed

musthave been programmed i n some previousblock if omitted

optional

Figure 16.6 in the previous section shows the axis motions that make up

the G85 continuous plane grinding cycle when the G19 (YZ) plane is

active. For the G86 cycle, these motions would be identical except that the

Z axis (plane axis 2 for G19) would be the plunge axis.

Programming a G86 or G86.1 causes the control to execute a continuous

plane grinding cycle using three axes. “Continuous” refers to the fact that

instead of making cross pick moves, the crossover axis moves

continuously towards its endpoint as the reciprocating axis moves back and

forth across the part. The G86.1 begins with a pre-dress operation prior to

the grind.

16.8

G86 or G86.1 Continuous

Plane Grinding (Axis 2)

1 2 ... 568 569 570 571 572 573 574 575 576 577 578 ... 819 820

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