VERICUT Users' Forum

Matt

Member

From: UK

Registered: 2005-09-15

Posts: 6

Website

Heidenhain iTNC530 - Offset Rotary Table - M144?

My company is about to purcahse a 5 axis machine fitted with a Heidenhain iTNC530 controller. the tool moves in X,Y,Z the workpiece rotates in B (about verticle) & A horizontal. The A Table is offset from the centerline of the B Table.

The machine tool builders insist that I DO NOT have to take this offset into consideration when outputing multi axis programs from one NC Datum.

The table offsets are stored in the kinematics of the machine in the PLC under the MP7530 column

Does anyone know how to configure the Heidenhain controller in Vericut to mimic this?

Not sure if it anything to do with M144 

Extract from the heidenhain manual.
Behavior with M144
The TNC calculates into the position value any changes in the
machine’s kinematic configuration which result, for example, from
adding a spindle attachment. If the position of a controlled tilted axis
changes, the position of the tool tip to the workpiece is also changed.
The resulting offset is calculated in the position display.

anyone out there using M144 with the Heidenhain controller?

a.t.b. Matt

DaveF

Senior Member

From: Valencia, CA

Registered: 2005-08-20

Posts: 304

Re: Heidenhain iTNC530 - Offset Rotary Table - M144?

I'm going to take a wag at it (wild ass guess)

bulid machine with A & B axis centerline coincident.

Add a UV or W axis under A

Set the initial machine location of W axis to the offset amount. That will jack up A.

An alternative to using initial machine location, would be a Waxismotion macro for this M144

I have no idea if this will work, just the first thing that came to my mind.
This is interesting machine you have there. 

Dave

---

Dave Frank
Aerospace Dynamics International, PCC
Valencia Ca
"Where else can you have this much fun,.......and get paid???."

SergeV

Senior Member

From: Irvine, CA

Registered: 2004-10-08

Posts: 507

Website

Re: Heidenhain iTNC530 - Offset Rotary Table - M144?

Matt,

Look in the Showroom folder, there is a sub-folder for Hermle machines. The Hermle C30 has a Heidenhain 530 control and the machine kinematics match you description very closely. It even has a 5 axis Program. It is the CYCLE DEF 19 which accounts for the machine kinematics. It creates a rotated working plane relative to the part coordinate system and outputs the values to be applied to the machine axes. Display the Driven Point Zero axis to see the rotation of the working plane.

Matt

Member

From: UK

Registered: 2005-09-15

Posts: 6

Website

Re: Heidenhain iTNC530 - Offset Rotary Table - M144?

Dave, Serge
Thanks for your reply's

Dave
worth a shot, I'll give it a try & post my findings

Serge
The thing I'm strugalling most with is that the machine tool supplier is telling me that i will not have to make any allowance for this in my programs. No cycle def 19, No M128 etc.
I will continue to investigate & post findings

a.t.b. Matt