NativeCAM is Features renamed

Thanks for the updates! I'll be off until next week but I can't wait to test it!

Hi Fern,

i have tested it after sudo apt-get update and the bug is still there.
I am on Ubuntu 12.04 LTS RTAI.

Regards

Niko

Update to latest [strike]0.1.14a[/strike] 0.1.14b

Fern

BigDo wrote: i have tested it after sudo apt-get update and the bug is still there.
I am on Ubuntu 12.04 LTS RTAI.

Is the problem still there with 0.1.14b ?

Fern

Hi Fern,

I've had little time to test the 14b version, but from what I've tested, it did not reproduced.
Right now I'm facing some issues with internal threading. I was trying to do an internal thread, using the values from this table: mdmetric.com/tech/M-thead%20600.htm
I tried a metric 20 with 1mm pitch, and used the major diameter, and minor diameter from the table for the nut columns.
I did the touch off correctly, and running commands from MDI, was posiyioning the tool in the expected location.
When running from nativecam, the tip of the cutter was always about 1mm towards center than where it should have been.
Basically it was doing air cuts. I've set thread peak to -1, it says it needs to be negative for internal threads...
Other than that, I can't figure it out what I'm doing wrong.

vmihalca wrote: I've had little time to test the 14b version, but from what I've tested, it did not reproduced.

I hope it is solved for good

...I'm facing some issues with internal threading. I was trying to do an internal thread, using the values from this table: mdmetric.com/tech/M-thead%20600.htm
I tried a metric 20 with 1mm pitch, and used the major diameter, and minor diameter from the table for the nut columns.
I did the touch off correctly, and running commands from MDI, was posiyioning the tool in the expected location.
When running from nativecam, the tip of the cutter was always about 1mm towards center than where it should have been.
Basically it was doing air cuts. I've set thread peak to -1, it says it needs to be negative for internal threads...
Other than that, I can't figure it out what I'm doing wrong.

This table is very interesting and lot of needed info is available.
However, the way I understand LinuxCNC, you can not use those major and minor diameter or you will end up with something like this. I guess your cutter is 60° and the point must go deep enough.



You have to use the points I show in this image.



Based on the chart for a 20X1mm the major diameter would be (20mm to 20.304mm) + ((1/8 height of the thread, H in the image, not H1 : 0.866 mm for a pitch of 1mm) * 2 for diameter). Automatic minor diameter will calculate the depth where the cutter will go.

A value of -1 mm for thread peak should be OK. All the parameters are the same as specified in lcnc documentation.

Regards
Fern