Messages

4041

LazyTurn / Re: Inscribed circle, what am I missing?

« on: December 03, 2010, 07:39:53 PM »

Dan,
Here is what I found.......thanks for bringing attention to the problem.

http://www.machsupport.com/forum/index.php/topic,5767.msg113278.html#msg113278

RICH

4042

LazyTurn / Re: LazyTurn

« on: December 03, 2010, 07:37:17 PM »

Hi Art,
A graphics display and tool problem in Lazyturn.
See attached file for explaination.

RICH

4043

General Mach Discussion / Re: tool force compensation

« on: December 03, 2010, 05:33:20 PM »

I would suggest you put something under what your trying to drill to keep the piece from bending.....or maybe get a new drill bit.
Before you injure yourself.
RICH

4044

LazyCam (Beta) / Re: Relocating the 0,0 origin.

« on: December 03, 2010, 05:27:39 PM »

Try the attached dxf. I got rid of your redifined origin ( that dot you placed in the center) in CAD. That point becomes a reference center away from the CAD origin.
Then the profile was moved in CAD to 0,0,0.
As shown in the attached pic, CAD origin / LC origin ( when as drawn is checked ) and then the file as posted to Mach. All the origins are the same.
I used to do what you did to a new drafter to see if they could figure it out a long time ago as a joke.  Redefinng or having a temporary origin can be handy at times but don't screw around
when your cnc machining. Also do not put dots or extraneous points in a drawing as LC will import those points and think you want to machine them. Or put a point way outside in space on the drawing.
RICH

4045

General Mach Discussion / Re: Brand new to CNC, mach3...well everything.

« on: December 03, 2010, 06:34:09 AM »

Enjoy the cnc learning experience, no real shortcuts to the learning.
RICH

4046

LazyTurn / Re: Inscribed circle, what am I missing?

« on: December 03, 2010, 06:28:38 AM »

Dan,
True if you use the tip radius, the range on tolerances vary depending on the tolerance class, insert shape and size.
Let not your heart be troubled as the manual will get fixed. Practically speaking, I am thinking all this will boil down to LT's displayed image size of the insert.
RICH

4047

General Mach Discussion / Re: Brand new to CNC, mach3...well everything.

« on: December 02, 2010, 08:56:07 PM »

cutting carbon fiber laminate

HMM, then you better start reviewing safety and electrical / electronic implications associated with carbon fiber particulates.

RICH

4048

LazyTurn / Re: Inscribed circle, what am I missing?

« on: December 02, 2010, 08:48:50 PM »

Jim,
Art never got back to me on my question......

Let me now try and explain something on where the / my confusion on the definition exists.
Looking at figure 5.13.2, the figure is dimensionaly correct. Now if you were find and use the "inside" inscribed circle along with the tip radius,
then LT should provide an "image" such that the long length would be 0.758". So let me test that and confirm what you originally posted.

Now, for talking purposes ONLY, should you use the inside circle as given by "some" manufactures with a given radius, and say there is a total tolerence of ( .002")  to the cutting edge,
then LT would not give you a true cut of the profile. This is a different issue.......

Now if you define the tool as using the tip center along with a defined tip radius, and it is by definition a 35 deg insert then all will be fine with the exception  of a too large flank cut depth ( by formula
that would be restricted ). So practicaly speaking even if the tool "looks" too big all may be just fine in the path generation.

RICH


 


 

4049

LazyTurn / Re: Inscribed circle, what am I missing?

« on: December 02, 2010, 07:23:31 PM »

What is the revision of the manual you are looking at?

I have rev8 of the manual, and on page 16 of the manual ,the figures from the link are the same used in the manual.
No where on page 16 are the words "the external circle radius is used". The latest manual can be found in Members Docs.

What LT shows on the screen is a related but different matter i will address at a later time.

RICH

4050

LazyCam (Beta) / Re: Relocating the 0,0 origin.

« on: December 02, 2010, 06:07:11 PM »

Never had the problem you described. Please post your dxf file.
RICH