Program different size to model

[info99H4D]

Hi,

I'm wondering if it possible in Fusion to cut a dimension that is different to the model.  

Today I'm machining (in the lathe) a part that has a tight tolerance on a diameter of 95.20-95.25 mm.  The model was supplied to me by the customer so changing it isn't an option.  They have modelled the dimension at 95.25 mm but ideally I'd like to program at bottom limit (95.20 mm).  I have used the wear offset limit in the control to bring the dimension where I want it to be but this is having a knock on effect on other part dimensions.

Is there a feature within fusion that would allow me to do this?

[akash.kamoolkar · Accepted solution]

@info99H4D if its a turning operation you can set a negative value to "stock to leave". that will allow you to overcut the model (as long as that value is smaller than the tool nose radius).

Regards,

Akash Kamoolkar

[Anonymous]

To finish all dimensions to nominal size, you need to adjust model to split tolerance for critical dimensions, then use it to program tool paths.

Models are rarely in sink with prints, print has all specific tolerances and other requirements and it takes priority over model.

I adjust customer models to print dimensions all the time for purpose of programming a job.

You program to nominal dimensions, taking plating thickness (if any) into account and use wear offset on machine to correct for tool wear, it's the way things are done.

[info99H4D]

Thank you for this.  Works perfectly.  I had actually tried it earlier but stuck in a value of -1.0mm just to test the feature but you're right - as long as the value is small it works as I'm needing it to.