[Hash01]

I was wondering if any one could help me out with some programming of Nakamura-Tome TW-10 to a SMW barfeed wondering what the correct way to send m-codes to the barfeed for feed and change of bars and best way to do top cuts and any other helpful info. Right know the feeder is just being used to hold stock and manually load stock.

[g-codeguy]

We use to have a TW-10, but I don't remember what barfeed was on it. These are the subprograms I used to run it. The first one is called by a G-code call, but could be used as an operation in the main program by changing the M99 to M1. The M98P9001 calls a safe index subprogram.

T0606 BARSTOP
*

:9010 (BARSTOP SUB)

M98P9001
/M98P8000
T0606M5
X0Z.5
Z.03
M11
M58 This is the code used for the barfeeder
M10
G4U1.
G0U4.W1.5M8
G28W0
M99
%


#526 = X-AXIS CLEARANCE FOR STOCK SIZE
#528 = SFM FOR G96. USE SFM FROM C-O TOOL IN MAIN PROGRAM
#529 = 3000 MAX. RPM
#531 = Z-AXIS C-O POSITION FROM MAIN PROGRAM

T1212 CUT-OFF TOOL
*

:8000 (DRESS NEW BAR)

G0G28U0W0M5
M11
M58
M10
G4U1.
G96S#528M3T1212
X#526Z-#531M8
G50S#529
G1G99X-.05F.002
G0G97X#526
G28W0
M99
%

I've since learned to do more than use variables. Now I would use a G65 Macro call to call the sub and assign the necessary values.

These subs are for a TW-20, but with an LNS barfeed. They are set up for MasterCam. I also have other subs loaded in the control so I can use the G65 Call to assign correct values for the job being run.

NAKAMURA TW-20 LNS QUICK LOAD BARSTOP AND NEW BAR SUB

MAKE SURE THE FACING TOOL IS IN THE CORRECT STATION. MUST CHANGE THE X-CLEARANCE FOR STOCK SIZE, AND THE G96S TO THE SAME VALUE IN THE MAIN PROGRAM FOR THE ROUGHING TOOL

T0101 BARSTOP
T0202 80 DEG. PROFILE TOOL CNMG-432
*

:9010

N100M191 (BARSTOP)
T0101M5
X0Z.5M9
Z.2
M11
M17
G1G98Z.025F50.
G4U3.
M10
G4U1.
/M98P8001
G0G28W0
M1

:8001 (NEW BAR)

G0G28W0M9 (BARSTOP)
T0101M5
X0
M11
M58
Z-.07
M58
G4U2.
M10
G4U1.
G0G28W0S1000M3
M1

T0202M8 (FACE)
S1000M3
G99X1.67Z.5
G50S3000
G96S900
Z-.1
G1X.3F.01
X-.065F.004
G28G97W0S1000
M99
%

You will notice that the bars are dressed using 2 different tools. That is because the TW-10 barstop didn't push a new bar to a stop. Therefore a cut-off tool was used to avoid wiping out the 80 degree profile tool.

This leads me to believe that it was an SMW barfeed on the TW-10 as it used the same approach for dressing a new bar as our Daewoo Puma 200S which has an SMW barfeed. Here are the barstop subs it uses. As before, you can change the M99 to M1 and use it as an operation in the main program.

:9010 (BARSTOP SUB)

G54M98P9001
T0532M9
/2M98P8000
X0Z1.M5
Z.02
M69
M51 this is the M-code the Daewoo uses for the barfeed
M68
G4U.5
Z.5
M98P9001
M99
%


:8000 (NEW BAR SUB)

G28U0M5 (LOAD NEW BAR)
M69
M51
M68
G4U.5
M98P9001

...operation to dress new bar
...
M99
%

If your barfeed loads a new bar without pushing to a barstop, then there are at least three values that may need changing in the NEW BAR sub. X-approach, Z-cut-off position, SFM and possibly the feedrate. That is why I like to use a G65 call to set all variables. Unfortunately I have to run two sets of barstop subs in the control so that when I'm off the another programmer can run a program developed in MasterCam.

Let us know if you get it figured out.

EDIT: I don't know what the M17 does. It isn't listed in the manual. The machine was purchased used. I followed the program example that was in the control. It works so I haven't messed with it to find out if the M17 is necessary. I have a feeling it isn't.