Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Uživatelský manuál stáhnout pdf (Strana 409)

100

101

AxisMotion

Chapter 12

12-37

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).

Use the following equation to determine grinding wheel speed in RPM

when CSS is active. This equation is for reference only. The value

obtained here is calculated automatically by the control and you do not

need to program it.

program

)(K)

= (--------------)

Where: Is :

Speedofgrinding wheel (rpm)

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

program

Surface speed programmed in theG96block (m/min orfeet/min)

Dressedor worn diameterof grindingwheel(mmor inch)

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

If your cylindrical grinding machine uses the S--word to control part

spindle speed, then CSS (programmed with a G96) is available when

grinding the part. RPM spindle speed mode (programmed with a G97) is

also available for the part spindle.

Machines that fall into this category typically have manual or PAL

controlled wheel spindles. Wheel spindle speeds are changed through a

manual gear change, a speed selection switch or special M codes. Much of

this depends on your control’s AMP configuration and PAL program.

Refer to the documentation prepared by your system installer for details.

Important: Constant Surface Speed (CSS) is applied only to the spindle

that is controlled with the programmed S--word.

12.5.3

Cylindrical Grinder,

S-word for Part Speed

1 2 ... 404 405 406 407 408 409 410 411 412 413 414 ... 819 820

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