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LazyTurn / Re: I am having trouble with tool size
« on: March 04, 2014, 01:54:48 PM »
The inscribed circle ( IC) definition is incorrect on page 16 of 50 - Rev 8 of the Lazyturn Manual.
The inscribed circle, diameter in the cataloges I looked at, is inside and tangent to the tool's edges.
By default, a button tool is round thus IC = the button tools diameter.
A button tool can't have a different sized radius. Also a square tool can't have a IC equal to it's width.
So if you have a odd ball shaped tool not represented by the standard insert tool selection then you may want
to use say a groove tool and limit the flank cut depth.
Just remember that LT uses tool info to check and apply anti gouging so if you trick the software gouging is affected.
So the value you input for IC should be the button tool diameter. The program won't allow you to
input a radius value for the Tip Radius of a button tool and will default to the input diameter as you replied.
Tip Radius applies to other tool shapes since they can have different tip sharpeness even though the IC's are the same.
----------------------------------------------------------
Now note the following:
Page 19 of 50 in the LazyCam Manual states:
"Use Tip Center - When selected will discriminate between using Mach3's offset registers with compensation , or
just to create the code pre-compensated using the tip radius as that compensation from the tip center."
I generated the code both with and without checking "Use Tip Center" and the generated code was exactly
the same. In the generated code, only a G40 was generated, thus compensation is cancelled. Upon backplotting the
code one will find that it is all pre-compensated with the cutting edge away from the profile a distance equal to the
button tools IC and not it's radius.
See attached pic.
RICH
The inscribed circle, diameter in the cataloges I looked at, is inside and tangent to the tool's edges.
By default, a button tool is round thus IC = the button tools diameter.
A button tool can't have a different sized radius. Also a square tool can't have a IC equal to it's width.
So if you have a odd ball shaped tool not represented by the standard insert tool selection then you may want
to use say a groove tool and limit the flank cut depth.
Just remember that LT uses tool info to check and apply anti gouging so if you trick the software gouging is affected.
So the value you input for IC should be the button tool diameter. The program won't allow you to
input a radius value for the Tip Radius of a button tool and will default to the input diameter as you replied.
Tip Radius applies to other tool shapes since they can have different tip sharpeness even though the IC's are the same.
----------------------------------------------------------
Now note the following:
Page 19 of 50 in the LazyCam Manual states:
"Use Tip Center - When selected will discriminate between using Mach3's offset registers with compensation , or
just to create the code pre-compensated using the tip radius as that compensation from the tip center."
I generated the code both with and without checking "Use Tip Center" and the generated code was exactly
the same. In the generated code, only a G40 was generated, thus compensation is cancelled. Upon backplotting the
code one will find that it is all pre-compensated with the cutting edge away from the profile a distance equal to the
button tools IC and not it's radius.
See attached pic.
RICH