Author Topic: Spiral Lead : Lead-In/Out-Angel of 90 degrees doesn´t cut vertical  (Read 257 times)

Offline gmoo

  • Storm Trooper
  • ***
  • Posts: 150
  • Jam it !
    • View Profile
Instead of expected vertikal lead-in/out it results in behaviour of setting to zero.

Best regards

Bernhard
best regards

Bernhard

Offline kvom

  • CNC Jedi
  • *****
  • Posts: 1566
    • View Profile
The angle is intended to be the ramp angle.  I'd assume that any angle not providing a full traverse of the polyline would be an error and undefined.

Offline Dragonfly

  • CNC Jedi
  • *****
  • Posts: 2298
    • View Profile
Instead of expected vertikal lead-in/out it results in behaviour of setting to zero.

Best regards

Bernhard
Would you be more detailed? I can't understand the problem.

Offline gmoo

  • Storm Trooper
  • ***
  • Posts: 150
  • Jam it !
    • View Profile
So well, the ramp angle.
1 degree is nearby horizontal, 0 degrees is without sense, so there is
a very cool exception ramping to  cutting depth during one full traverse of a closed polyline.

So I expect 90 degrees is a simple vertical plunge without ramping.

I suppose sometimes I am writing a little confused, my school days learning english habe been a looooooooong time ago.
So please have a little mercy on me.


Best regards

Bernhard
best regards

Bernhard

Offline Dragonfly

  • CNC Jedi
  • *****
  • Posts: 2298
    • View Profile
'0' means CamBam calculates the angle to reach the depth of cut (DOC) in one full travel along a closed poly. I am using this almost on any profile.
Any other non-zero value, less than one included, forces CB to calculate the tool path according to it even if it will take more than one full circumference.
On straight line lead-in (open poly or simple line) the cut starts somewhere inside the line towards its end and the distance from the end is dependent on the set angle so that cutting depth is reached at the end. And then the direction of the tool is reversed. If the angle is small and the line length not long enough CB does a vertical zig-zag plunge.

Offline gmoo

  • Storm Trooper
  • ***
  • Posts: 150
  • Jam it !
    • View Profile
Yes,  this is clear so far and works perfect until 90 degrees.

 I expect for given 90 degree : NO ramp, just vertikal straight down and start milling.
(just like engrave).

But instead of  I get the same behaviour as I would give 0 degree.

I think it's a bug, not a feature.
best regards

Bernhard

Offline Dragonfly

  • CNC Jedi
  • *****
  • Posts: 2298
    • View Profile
90 degree is meaningless because it nullifies the purpose and meaning of 'lead-in'. In this case one simply turns lead-in off - None. And gets straight plunge.

Offline gmoo

  • Storm Trooper
  • ***
  • Posts: 150
  • Jam it !
    • View Profile
Oh.oh,oh. ... damned, you´re so right ...
Sometimes the simpliest things are not obvious.

Here in good-ole Germany we say "You don´t see the woods because of trees".

I am sorry for all your inconvenience, the next beer is on my bill !

Best regards

Bernhard



best regards

Bernhard

Offline kvom

  • CNC Jedi
  • *****
  • Posts: 1566
    • View Profile
We say "don't see the forest for the trees".  I'm guessing the German translation is equivalent.  The shortened form is "duh!"

Offline lloydsp

  • CNC Jedi
  • *****
  • Posts: 8233
    • View Profile
The American version is the same, except for the word "Can't..." instead of "Don't".

Lloyd
"Pyro for Fun and Profit for More Than Fifty Years"