Cincinnati Milacron W/ PC2100 Control H Offsets

[Dave.L]

Greetings All,

 

Anyone here using this machine and H offsets?

 

I would like to talk to someone doing this since there appears to be some baggage with this.

 

If so please contact me at the email below:

 

BTW, not looking for a post, I have one.

 

 

[email protected]

[Leandro]

We use H in a Sabre 1000 Vickers 2100E

I send you an e-mail

[Dave.L]

I am going to attempt to explain the issues we are having with fixture offsets (H values), please pardon the long post. I would greatly appreciate some insight from any users that have this control and that are using H offsets.

 

Unlike our Mazak’s that use G54’s, our Cin. Milcaron with A2100 control uses H offsets, or fixture offsets. Unlike the Mazak’s, when calling a fixture offset, the machine actually makes a 3-axis simultaneous linear move in the direction and amount of the offset (from H0), instead of simply modifying the current coordinate display.

 

This move is causing issues for us for the following reason.

 

We have standardized on Unilock pallet clamps in all of our machines.

 

http://www.schunk.com/schunk_files/attachm...L_400_DE_EN.pdf

 

These are 4-puck clamping modules. What we have done with our Cin. Milacron is set the “active setup #1” coordinates X, Y, and Z to the lower left clamping puck, X & Y center and Z top of the puck. Then we simply enter the fixture offsets from the clamping puck to our workpiece. We create Solidworks Models to obtain the coordinates. This removes the need to edge find the locations of the workpiece and it works excellent since many of our jobs repeat and run in dedicated fixtures. With our Mazak’s, we use G10 commands to set the workoffsets.

 

So, the issues is that once we do a tool change, then make a XY move and call the fixture offset, the machine makes it’s move to the offset and we get an error. The error is a Z-Axis travel limit since the machine cannot move up in Z enough for the fixture offset.

 

Did I describe this well enough? If so, how are others handling this issue? Below is a sample group of code:

 

:N1

(MSG, :N1_.315 DR)

;.315 SCREW MACH DR AMTPID 103208 |GUHRING 552 8.000MM|

T1 M6

G0 G90 X-.406 Y.406 S1200 M3 H3 M8 {{On list line, the Z-Axis needs to move up the amount of the offset, 5.3335 inches and it runs out of travel}}

Z.1

G81 Z-.4834 R.1 F16.

X.406

Y-.406

X-.406

G80

G28 P1

M1

 

Here is the fixture offsets for that:

 

;H3

[$FIXTURE(3)X]=-2.0000

[$FIXTURE(3)Y]=1.8730

[$FIXTURE(3)Z]=5.3335

 

Thank you all for the help in advance.

[ak762]

When I worked with A2100 we run tool change block T1 M6 O1

O word - Tool Length/Diameter Compensation

O number was same as T number

never got alarm "machine cannot move up "

quote:

---

the machine actually makes a 3-axis simultaneous linear move in the direction and amount of the offset (from H0), instead of simply modifying the current coordinate display.

---

you can try to use G92.* instead H

 

Have you a operator/programming manuals?

 

there are a good explanation how to use and combining several offsets

http://websystem.gismo.se/gismo/files/859/...NG%20MANUAL.pdf

[Dave.L]

ak762,

 

quote:

---

When I worked with A2100 we run tool change block T1 M6 O1

O word - Tool Length/Diameter Compensation

O number was same as T number

never got alarm "machine cannot move up "

---

Correct, you would not get an alarm in this case because no fixture offset was called. We do have the manuals and it states that H offsets must be called with a linear move.

 

We purchased this machine new about 12 years ago. During that time we have programmed our parts such that the 1st position was H0 and we set the X,Y, &Z of that position with G92.1. Then our other H offsets were fairly close in position, escpecially Z, but since the Z-axis was already down near the table, making a H offset was not an issue since the machine had enough Z travel to make the offset move.

 

Our current issue is we need H0 to be our pallet clamp registration X, Y, and Z as explained prior.

 

Thank you for your reply.

[dougm]

Dave

we have 8 A2100 machines

we use the h offsets but never such a large

offset

I think all you need to do is add a z move

(G0 G90 X-.406 Y.406 Z2.0 S1200 M3 H3 M8)

because the machine is at tool change postion

and cant move up the 5.3335 in z

although the H3 is active the z axis has not moved

 

Doug

[Dave.L]

Hi Doug,

 

Thanks for the suggestion and that will work in some cases but not others. I am going to contact Seimens and see if a new version of the software still requires the physical move to make the offset.

 

Thanks!!