Synchronous Feed; G94, G95 - Mitsubishi Electric MELDAS C6 Programming Manual

7. Feed Functions

7.4 Synchronous feed; G94, G95

Function and purpose
Using the G95 command, it is possible to assign the feed amount per rotation with an F code.
When this command is used, the rotary encoder must be attached to the spindle.
When the G94 command is issued the per-minute feed rate will return to the designated per-minute
feed (asynchronous feed) mode.
Command format
G94;
G95;
G94
G95
The G95 command is a modal command and so it is valid until the G94 command (per-minute
feed) is next assigned.
(1) The F code command range is as follows.
The movement amount per spindle revolution with synchronous feed (per-revolution feed) is
assigned by the F code and the command range is as shown in the table below.
Metric input
Input unit
system
Command
mode
Command
address
Minimum
command unit
Command
range
Inch input
Input unit
system
Command
mode
Command
address
Minimum
command unit
Command
range
(2) The effective speed (actual movement speed of machine) under per-revolution feed
conditions is given in the following formula (Formula 1).
FC = F × N × OVR ..... (Formula 1)
Where FC
When a multiple number of axes have been commanded at the same time, the effective rate
FC in formula 1 applies in the vector direction of the command.
: Per-minute feed (mm/min) (asynchronous feed) (F1 = 1mm/min)
: Per-revolution feed (mm/rev) (synchronous feed) (F1 = 0.01mm/rev)
B (0.001mm)
Feed per minute Feed per rotation
F (mm/min)
1 (= 1.00),
(1. = 1.00)
0.01 to 1000000.00 0.001 to 999.999
B (0.0001inch)
Feed per minute Feed per rotation
F (inch/min)
1 (= 1.000),
(1. = 1.000)
0.001 to 100000.0000 0.0001 to 999.9999
= Effective rate (mm/min, inch/min)
F = Commanded feedrate (mm/rev, inch/rev)
N = Spindle speed (r/min)
OVR = Cutting feed override
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7.4 Synchronous feed
Feed per minute
E (mm/rev) F (mm/min)
1 (= 0.01), 1 (= 1.000),
(1. = 1.00) (1. = 1.000)
0.001 to 100000.000
Feed per minute
E (inch/rev) F (inch/min)
1 (= 0.001), 1 (= 1.0000),
(1. = 1.000) (1. = 1.0000)
0.0001 to
10000.00000
C (0.0001mm)
Feed per rotation
E (mm/rev)
1 (= 0.01),
(1. = 1.00)
0.0001 to 99.9999
C (0.00001inch)
Feed per rotation
E (inch/rev)
1 (= 0.001),
(1. = 1.000)
0.00001 to 99.99999