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Siemens 840D - 5 Axis Post Processor Test Issue - (U) B- Negative rather that B+ Positive

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Siemens 840D - 5 Axis Post Processor Test Issue - (U) B- Negative rather that B+ Positive

Testing the latest generic 5-axis post for the Siemens 840D (Table - Table BC) (Link) we have run into a Table positioning issue in that the table is rotating on the "U" (B) axis into the negative position when ideally we would like the Table to be in a "U" (B) Positive (Our tool change comes from the lefthand side reducing any chance of a Table collision!) But however, we are struggling to achieve this by editing the affected step in Fusion.

 

Long story short is this a Fusion Editing issue or a Post Processor issue?

 

Supporting Information Below:

30° Angle on left hand side of Workpiece30° Angle on left hand side of Workpiece

30° Angle on the left-hand side of Workpiece

 

B- Axis Simulation within Fusion, Matches actual machineB- Axis Simulation within Fusion, Matches actual machine

B- Axis Simulation within Fusion, Matches actual machine - We know this is correct but from a safety point of view we would like to be able to set this as a B+ (Tool Change on Left-Hand side - Image Below) 

Our MachineOur Machine

 

In the second step, we are performing the preferred positive move on the opposite angle face 30° 

Positive Step.png

30° Angle on the right-hand side of the Workpiece

 

Screenshot 2023-04-27 134817.png

B- Axis Simulation within Fusion, Matches the actual machine

 

Fusion 360 Machine Configuration:

U - machine config.pngV - machine config.png

 

Please see attached Program File (F3Z), Fusion Post File (MPF), Fusion Post Processor (CPS)

 

If you need more information reach out to us.

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