Denford Software & Machines

I've just acquired a 1993 denford traic vmc mill with air atc, heidenhain software v2.98, desk top tutor, I have no manuals and I'm new to milling, my problem is I cannot get the machine to move when running a program. Machine homes all axes fine, I can jog the axes and set new datum, I have air connected and been able to change the tools with the atc in mdi mode, program simulates ok, , is there a code needed at the start of the cycle? Here's the program I found in the directory which simulates ok.

TOOL DEF1 L+0R+2.5

TOOL CALL1 Z S2000

L X+53 Y+69.5 R0 FMAX M03

L Z+3 R0 F M

CYCL DEF 1.0 PECKING

CYCL DEF 1.1SETUP-3

CYCL DEF 1.2DEPTH-5

CYCL DEF 1.3PECKING-5

CYCL DEF 1.4DWELL0

CYCL DEF 1.5 F200

STOP M02

Also when I press MOD button it provides the raw g code

%G71

N20G99T1L+0R2.5

N40T1S2000G17

N60G00G40G90X+53Y+69.5M0

N80G01G40G90Z+3

N100G83PO1--3PO2-5PO3-5

N120G38M02

N9999%G71

Machine is in excellent mechanical order, I'm struggling with the machine control, Any information on the above would be gratefully received

Regards Dale gribble

Hello
After the cycle was defined, of course it must be called. The simple order "CYCL CALL M" does this.
With this order the defined cycle can be called any time once more in the programme until a new cycle is defined

TOOL DEF1 L+0R+2.5

TOOL CALL1 Z S2000

L X+53 Y+69.5 R0 FMAX M03

L Z+3 R0 F M

CYCL DEF 1.0 PECKING

CYCL DEF 1.1SETUP-3

CYCL DEF 1.2DEPTH-5

CYCL DEF 1.3PECKING-5

CYCL DEF 1.4DWELL0

CYCL DEF 1.5 F200

CYCL CALL M

L IX+20

CYCL CALL M

LIY+20

CYCL CALL M

STOP M02

Which material do you treat? It seems to F200 to be a little high for drilling.

Enny

Hi, Enny

Thanks for the reply, I've add "cyc call m" and "L ix+20" etc .About the program feed rate, I got the mill from a college and this is one of the programs that was in the directory, I am just trying to run the machine in fresh air. I've checked the other programs in the directory and they do have the commands you mentioned. These don't run either, it's like it stuck in simulation mode. Any help would be gratefully received.

What happens when you run the program? (what line does the program stop on?)
Is the toolchanger fully up & out?
Is there any oil in the Luberication Tank?

Hi Martin

Program runs and simulates to the end and stops at either m30 or returns to start using m02, toolchanger is up. There is lube oil in the main tank next to the coolant pump. I've just noticed there's no oil in the oil tank around the back next to the air inlet regulator, but I see no electrical connection to that oil tank. Any information would be gratefully received

Regards Dale

Hi,
There should only be one Luberication pump. It will have a 4mm oil pipe & a plastic shrouded 10mm flexible conduit which contains the electrical connections.
It is normally fitted at the back of the machine & contains a float to register when emty.

Hi Dale!

I also believe in a fault in the area of the end switches of the tool changer.
The air pressure should lie between 90 and 100psi (approx. 6,2-6,9 bar; 6,4-7 kp/cm2) .
I had the same symptoms at my machine, there one of the switch was twisted easily and did not switch any more.
To exclude faults which stem from the tool changer, I would recommend the following.
A file "Heiden.opt" is in the list of the milling software . Put the line : "ATC 0" in this file.
Restart the machine, the tool changer should be ignored now.
The programmes should work now. If not, the fault does not lie with the ATC.

Regards
Enny

Hi, Enny

I just found a leak on the one way valve which goes into the atc manifold, I broke the valve trying to fix it. I'm going to make a new part on my lathe tonight and see if the air leak was at fault. If still no joy I'll alter the the file as your instructions. I'll update my progress tomorrow. Thanks for your help everyone.

Regards Dale

Hello,

Success, the mill came to life, I made a new part to fix the air leak, but it's no better then before, so added ATC 0 to heiden.opt and bingo mill start, I noticed on the solenoids for the ATC a lot of red pins out so I reset them but one kept on tripping, altered pressure until there was no tripping, then I deleted the ATC 0 line and mill now works. I think maybe one or two of these solenoids is faulty or temperamentally at best. I'll get some fresh oil tomorrow for the oiler which I guess is to lube the solenoids. Thanks for everybody's help on this problem.

Regards Dale