Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario descargar pdf (Pagina 562)

100

101

Surface Grinding Fixed Cycles

Chapter 16

16-12

F - cross and plunge pick feedrate.

The feedrate entered here is for the cross and plunge axes. It must be within

the range of legal F words defined for your system. If no value is entered

for this, then the last F word executed in the part program is used as the

cross and plunge pick feedrate.

This parameter is the system F word. Programming it here alters the

feedrate for any subsequent axis motion. Programming F0 selects the

rapid feedrate.

E - reciprocation feedrate.

The feedrate entered here is for the reciprocating axis. It must be within

the range of legal F words defined for your system. Programming a value

of zero with the E parameter is illegal and an error results. If the E

parameter is not programmed, then the F parameter value is used.

This parameter is “program modal,” meaning that it needs to be

programmed only once in a part program. Any subsequent surface

grinding blocks (G81 -- G86) use a previously programmed value if a new

value is not programmed.

P - dress program number.

The number entered here must be a legal program number (a program that

has been saved as a subprogram using the O word followed by a number of

up to five digits). This dress program is used for the pre-dress and/or

auto-dress operation and is executed the number of times defined by the D

parameter.

If the surface grinding cycle block calls for a pre-dress operation (G81.1 to

G86.1), then the first dress program execution occurs before the actual

surface grinding cycle begins, regardless of the number entered for the D

parameter.

This parameter is “program modal,” meaning that it needs to be

programmed only once in a part program. Any subsequent grinding cycle

blocks (G81 -- G86) use a value from a previous grinding cycle block if a

new value is not programmed.

Important: It is the programmer’s responsibility to make sure that the

dress program can be executed safely from the reciprocation reversal

points.

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Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario Pagina 562

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