Fanuc 32i: Parameter to change Txxxx behavior

[Spruewell]

I never use T0 or Txx00 in any of my programs. Always seemed redundant to me to index the turret to the tool position then call the tool offset. Especially when the command to call the offset also indexes the turret. Just extra code, Couldn’t see the benefit.

 

[Vancbiker]

I never use T0 or Txx00 in any of my programs. Always seemed redundant to me to index the turret to the tool position then call the tool offset. Especially when the command to call the offset also indexes the turret. Just extra code, Couldn’t see the benefit.

Had you learned Lathe programming in the era when Zero Return did not exist and G50 was used to establish your coordinate system, you would appreciate the need for a T0 or Txx00 function. It was pretty critical that one moved back to the origin position without an offset active at the end of a tool operation.

 

[Spruewell]

Perhaps, but none of my lathes require a return to home between tool changes. I can index to any tool no matter where the turret is. The down side of that is that you have to make sure you move to a position that will allow enough clearance to make a tool change. Otherwise you run the risk of the turret swinging around and smacking it or another tool into the workpiece. Lathes are fun

 

[Barbter]

Lathes are fun

In the way, that all they want to do, is throw things at you....

 

[TeachMePlease]

Had you learned Lathe programming in the era when Zero Return did not exist and G50 was used to establish your coordinate system, you would appreciate the need for a T0 or Txx00 function. It was pretty critical that one moved back to the origin position without an offset active at the end of a tool operation.

This is how Swiss are still programmed today. At least, how I program them, I can't speak for everyone, everywhere.

 

[angelw]

This is how Swiss are still programmed today. At least, how I program them, I can't speak for everyone, everywhere.

What Kevin was referring to with "Zero Return did not exist", is that the lathe was equipped with two dial indicators to establish what was in effect the Reference Return position, by use of the Hand Wheel. I hope Swiss have progressed from that.

Regards,

Bill

 

[Vancbiker]

What Kevin was referring to with "Zero Return did not exist", is that the lathe was equipped with two dial indicators to establish what was in effect the Reference Return position, by use of the Hand Wheel. I hope Swiss have progressed from that.

Regards,

Bill

Exactly. You would hand wheel each axis towards the indicators and when they hit zero you would zero out the position display. If the indicator was setup properly, this meant that an ID holder or a qualified stick tool was on X0. Then you moved X to the value in your G50 line for the first tool. Z would then be moved to a position that corresponded to the distance set in the G50 line for where the tool was determined to be from Z0 on the part. Something to keep in mind was that all this was done without the benefit of a display screen. The control had a single line display that depending on what button was pressed could show the position of one axis at a time, the distance to go of one axis at a time, or the value of one address of one line of your program.

 

[Spruewell]

No offense, but that sounds horrible. Thank god for advancements in technology.

 

[Vancbiker]

At the time, it was so cool.

 

[alphonso]

Sounds as bad as the GE 1050HL, my first cnc machine. Single line of Nexi tubes display.

 

[Vancbiker]

Sounds as bad as the GE 1050HL, my first cnc machine. Single line of Nexi tubes display.

Pretty much similar. That was late 77 or early 78 Fanuc 2000 on an Mori Seiki DTL 500B and for a 19 year old kid to get chosen to program and run it was a great opportunity. Not too long after we got it Fanuc came in and added a 2 line display for axis position. Major upgrade .

 

[mach ramsey mn]

Back in the mid 80’s to mid 90’s it seemed like I’d run into the Mastuursa MVC-510’s with the Yasnac MX3 ( I think that was the model?) with the one line 7 segment LED control. When you told the Forman you could edit this on the fly you were hired!
Still see these hit the auction

 

[Vancbiker]

Yasnac with the single line display were the 2000G and 3000G. By the time MX series came along they had a CRT.

 

[mach ramsey mn]

They were a treat !