
5.
FEED FUNCTIONS
5.2
Cutting Feed Rate (GOl)
Feed speed of linear interpolation (GOl) is commanded with numbers after the F code.
52.1
Cutting feed rate clamp
Cutting feed rate upper limit can be set as parameter FEDMX (No. 1422). If the
actual cutting feed rate (feed rate with override) is commanded exceeding the upper
limit, it is clamped to a speed not exceeding the upper limit value.
The clamped value is set in mm/min or inch/min.
Except during acceleration or deceleration, the CNC arithmetic error for the command
value of the feed rate is within 2 2%. This error is applied
to the time measured for
the tool to move a distance of 500 mm or more under stable
conditions.
5.3
Feed per Minute (G94)
With the feed per minute mode G94, tool feed rate per minute is directly commanded
by numerical value after F.
Table
Feed per minute
(mm/min or inch/min)
Fig. 5.3 Feed per minute
54
0
Feed per Revolution (G95)
Specify feed per revolution mode by G95.
Following F, directly specify the feed of tool per spindle revolution. It is necessary to
mount a position coder on the spindle.
G95 is modal. After G95 is specified, it is effective until G94 (feed per minute) is
specified. When this function is used, a spindle module of option is required.
/ Feed per spindle
- revolution
(mm/rev or inch/r w)
Per revolution feed
1-18