G114.2 G114.3

[hongjianming]

hello everyone
need help. i don't know how to use Mitsubishi system G code G114.2 and G114.3 funcation, can anyone help me to explain it. thank you.

[cogsman1]

G114.2 is Polygon milling used for cutting shapes into a spinning part usually hex.
G114.3 is Gear hobbing used for cutting gears or splines.
Here is a code explination.



G114.2- Polygon machining command. There are many unique ways to use
polygon machining. Not just for hex or square shapes. Side slots,
Phillips screw driver shapes and whatever else can benefit from the
live tool synchronized with the part while cutting. Use G113 to cancel.

G114.2 H3 D1 E3 L6 (R15.)

H3 = Master spindle or S3(gang live tool) S4 U121B option
D1= Slave spindle. Could be 1,-1, 2, -1 - is for direction.
E3 = Rotation rate. Number of teeth of the cutter.
L6= Number of flats to be cut on the part.
R15. = Phase shifting amount in degrees.

G114.3- Gear hobbing command. With a special holder this command will
time the cutter(S3) and spindle(S1C1) to constantly hold position
so all we do is feed across the part as if we were turning and a
gear shape is cut. A "C" axis is also needed! Use G113 to cancel.

G114.3 H3 D-9 E1 L18 (P0) (Q1.)

H3 = Master spindle or S3(gang live tool)
D-9= Slave spindle or 9= Caxis -9 = reverse
E1 = Rotation rate. Always set to one. Not sure exactly why!
L18= Number of gear teeth to be on the part.
P0 = Helix angle -89.000 to 89.000 for helical gears. Leave off
or set to P0 for spur(straight) gears.
Q1.= Gear module. For helical gears only.

[hongjianming]

hello
thank you very much

[hongjianming]

dear cogsman1

i don't know how to use the code G851/G850.
i learn from manual book, but i didn't understand the meaning, no example.
could you give me detail explain. thank you

regards

hong