Simulation does not match program

[lethal375]

Fanuc 21iT control

Fanuc turning processor in Fusion 360

Tring to make a pulley and the simulation work fine

When I tried the program in the lathe it does not match the profile in simulation

Its like the v groove profile is shifted in the +Z direction

First tool T0404 does the facing and rough profile to diameter perfectly

Tool T0202 starts the profile by making a pass across diameter (light cut) then begins putting the fillet on leading edge. Nice fillet

Now it should start the first V groove, but it moves -Z not enough for first groove and then dives in (See pic)

I have made several checks on the tool calibration in lathe and its spot on.

When it dives in, I stop it and checked location in both X & Z, all good.

Can move over and verify the tool is still on Z0.0

I have tried the tool comp in tool set up but no luck

Tool comp is off in control (G40)

[lethal375]

Forgot to add file

[a.laasW8M6T]

Hi

How are you touching the tool off in the machine?

You have the Compensation set to "tip center" in Fusion

are you touching the side of the tool on the tool setter and then adjusting the offset by half the tool width?

if not and you are touching on the side and setting that as z zero you should have the Compensation set to "Tip"

[lethal375]

I have tried both ways

Each time I changed the machine offset accordingly

Have always used the left side with no problems till now, if that's the issue

I make several parts that use a straight 35 degree tool with comp on center and never had an issue

[seth.madore]

The file that you shared doesn't have a Grooving tool applied, nor is there one in the document library (aside from the adjustable part-off tool). The VNMG (Neutral) tool that you are using is set to Tip Tangent, so I assume you're calculating where that tip is and adjusting your tool offset (in the machine) accordingly?

[lethal375]

I added the VNMG to the project just to try the simulation.

I know I have used parting tools like this before with no issues

The reason for using the parting tool this time is clearance to chuck jaws for the last v grove

So Fusion changes how it interoperates the tool based on category and geometry?

My Fagor control does not care about category only looks at the tool geometry and offset then moves accordingly. 

[seth.madore]

So your Fagor control adds an additional offset based on the tool geometry?

[lethal375]

The Fagor 8055 control has great conversational capabilities.

I wanted to use my big Clausing cnc because of the parts size/weight

The Fagor will allow any tool profile that will fit the part geometry.

You can draw the profile on the control screen and select a tool 

If the selected tool geometry will cut all of the profile features, it works

It does not matter what category the tool is considered, grooving, parting, profiling, etc.

Got it done on the Clausing flat bed with the Fagor control

Had to take light cuts due to vibration