Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario descargar pdf (Pagina 410)

100

101

AxisMotion

Chapter 12

12-38

The format for the G96 block is:

G96 L__S__;

Where: Is :

specifieswhetherCSSisin per minuteorpersecond mode. L1 specifiesper

secondmode. L0 specifiesper minutemode. IfL is notprogrammed the control

uses the defaultmode defined in AMP by your system installer.

specifiestheconstantsurface speedinmeters or feetper second(L1)or per

minute(L0).

When using CSS during part grinding, the axis perpendicular to the part

axis typically is selected as the CSS axis. CSS axis selection is described

on page 12-45.

Grinding wheel surface speeds relative to the surface of a rotating part

should be based on the specifications of the wheel and the material being

ground. Enter this surface speed in the G96 block using the S parameter as

described below:

If you want to program the part surface speed relative to a

stationary

wheel

, enter that value directly with the S parameter in the G96 block.

If you want to program actual surface speed (part surface speed relative

to a rotating wheel

), you must use the following equation to determine

the correct value to enter with the S parameter in the G96 block. This is

necessary to take into account the wheel rotation speed. This equation

assumes that the wheel and part are rotating into each other (both

spinning in the same direction).

)(N

)

program

desired

- (----------)

Where: Is :

program

Surface speed toprogramin theG96 block(m/minor feet/min)

desired

Desiredactual surface speed (m/minor feet/min)

Diameterofgrindingwheel (mmor inch)

Speedofgrinding wheel (rpm)

Constant318.31(1000/π) for metric systemor 3.8197 (12/π)forinch system

if using units of seconds, make sure all S and N values are entered in seconds

1 2 ... 405 406 407 408 409 410 411 412 413 414 415 ... 819 820

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Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario Pagina 410

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