Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Instrukcja Użytkownika Strona 300

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Introduction to Programming
Chapter 10
10-22
An F word with numeric values specifies feedrates for the grinding and
dressing moves in linear interpolation (G01), and circular interpolation
(G02/G03) modes. The feedrate is the speed along a vector of the
commanded axes, as shown in Figure 10.5.
Figure 10.5
Feedrate Vectors
X
Y
55
end point
startpoint
Feedrateof 220 is effective
along thismotionpath
75
12167-I
The term “feed” refers to moving the grinding wheel at a specific velocity
along a path. “Feedrate” is the velocity programmed for the feed of a
grinding wheel.
Feedrates are expressed by the distance of movement per interval.
Depending on the mode of the control and the results wanted, the distance
can be millimeters, inches, meters, or revolutions. The interval can be
minutes or revolutions.
Table 10.D
Feedrate Units
Unit/Interval Abbreviation Typically Used For:
millimeters per minute
mmpm linearaxisfeedrates
inchesper minute ipm linearaxisfeedrates
revolutionsperminute rpm rotary axisfeedrates
millimeters per rev mmpr thread grinding
inchesper rev
ipr thread grinding
10.5.3
F Words (Feedrate)
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