Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario Pagina 425

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AxisMotion
Chapter 12
12-53
This section covers the following topics:
Topic: On page:
FeedratesApplied During Dresser/WheelRadiusCompensation 12-54
Feed PerMinute Mode (G94) 12-56
Feed PerRevolution Mode(G95) 12-56
Rapid Feedrate 12-57
FeedrateOverrides 12-58
FeedrateLimits(Clamp) 12-59
RotaryAxisF eedrates 12-60
Feedrates are programmed by an F--word followed by a numeric value.
Feedrates can be entered in a part program block or through MDI. They
become effective in the block in which they are programmed and apply to
all G01, G02 and G03 axis motion. If the block requires rapid traverse
motion (G00), the programmed feedrate is ignored for that block, but is
stored in control memory as the active feedrate.
Feedrates are modal, meaning that they remain active in control memory
unless replaced with a different feedrate programmed with an F--word.
Feedrate modes are either G95 (grinding wheel distance per workpiece
revolution) or G94 (grinding wheel distance per minute). The following
table shows the possible feedrate units depending on axis type.
ActiveG-code Linear Axis Feed Rotary Axis Feed
G71 and G94 millimeters/min. degrees/min.
G71 and G95 millimeters/rev. degrees/rev.
G70 and G94 inches/min. degrees/min.
G70 and G95 inches/rev. degrees/rev.
Feedrates for linear and circular interpolation are “vector” feedrates. That
is, all axes move simultaneously at independent feedrates so that the rate
along the effective path is equal to the programmed feedrate (see
Figure 12.26).
12.7
Feedrates
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