Recent Posts

Pages: [1] 2 3 ... 10
1
General Discussion / Re: Going from X-Y drawings to X-Z for a Lathe
« Last post by jwillard on June 23, 2018, 02:04:16 PM »
In the interest of clarity, I've attached the original 2d drawing I'm working with. I've started from scratch with both of the suggested solution and can't seem to get where I need to be.
Essentially the 2D "X" axis needs to become Z and the original Y axis needs to become X

In working with Phil's suggestion to rotate around the X axis, I can't change the setting. It's showing rotation Axis as Z, and it's grayed out and I can't change it. (I just discovered I should have been in 3D mode. Then I could change the Rotation Axis)

2
General Discussion / Re: Going from X-Y drawings to X-Z for a Lathe
« Last post by Dr PR on June 23, 2018, 11:10:46 AM »
Jeff,

I was in error in my post above when I said to rotate everything around the Z axis - you should rotate around the X axis! Sorry, I was having a "teen-age moment."

Thanks to Bob P for catching that error.

****

I am not certain what changing the Working Plane does in 2D, but my guess is that the X axis is temporarily realigned between the two points you set and the new Y axis is perpendicular to the new X axis. In 3D mode you set both X and Y directions to establish new 3D X, Y and Z axes.

Setting a custom working plane is an extremely useful option when you are trying to work relative to an angled line (2D) or plane (3D). Once the custom working plane is set all drawing functions work relative to the custom line/plane.

Imagine having a 3D surface angled randomly with respect to all three axes and trying to figure out how to draw a new object perpendicular to the plane! You can do it with a lot of geometrical constructions to get the perpendiculars, but if you set a new working plane orthogonal to the angles surface you can just draw naturally.

Phil
3
General Discussion / Re: Going from X-Y drawings to X-Z for a Lathe
« Last post by jwillard on June 23, 2018, 10:46:25 AM »
Actually, the "Plane" question was another one I had. In the above suggestions, there wasn't any mention of changing the "Working Plane", If I click "Choose working Plane" it asks for 3 points. An Origin, a 2nd point for X and a 3rd for Y. No choice for Z.

Again... my brain hurts.

Thanks to everyone though for the responses.
Jeff
4
General Discussion / Re: Going from X-Y drawings to X-Z for a Lathe
« Last post by Dr PR on June 23, 2018, 09:10:10 AM »
jw,

When you are having the Point Relative problem in 2D what plane are you working in? We have been talking about switching between the XY and XZ planes, and it isn't clear when you are seeing this problem.

Phil
5
General Discussion / Re: Going from X-Y drawings to X-Z for a Lathe
« Last post by jwillard on June 23, 2018, 08:20:00 AM »
I haven't had a chance to play with this for a few days but, with relation to the Point Relative issue, I found that when I did point Relative and entered the Z value into the Y field, while the drawing looked correct in 2D mode and I happily carried on, in reality it in fact put the point in the Y coordinate. So when looking at it in the X-Z plane it looked fine, when I switched to 3D mode things were a mess. I discovered this when I went to do a trim between two lines and got an error saying there wasn't an intersection between them. I should have gotten a hint when some fillet commands failed too.
This is making my brain hurt. Maybe I should stop chewing gum while I try to figure this out. :)

Oh... FYI. In the mean time...... my machine operator programmed the Haas by hand and the parts are done. So now this is just pure principle. I won't let it defeat me.
6
General Discussion / Re: Going from X-Y drawings to X-Z for a Lathe
« Last post by JJG on June 21, 2018, 09:24:24 PM »
yes, and for that, there are some macros to flatten on the desired axis... give a look in macro section.
7
General Discussion / Re: Going from X-Y drawings to X-Z for a Lathe
« Last post by Rob S on June 21, 2018, 10:29:11 AM »
Not really.  Maybe sort of.

2D drawings theoretically only have two dimensions, and by default designcad uses xy.

The dialog simply does not contemplate drawing z dimensions in 2D mode. 

If you draw in 3D mode, you can draw 2D drawing on any axis you like.

Due to the combined 2D 3D in one single program some anomalies can arise, by switching back and forth you can end up with a 2D drawing with some points not on the zero depth plane, which can screw up some 2D commands.


8
General Discussion / Re: Going from X-Y drawings to X-Z for a Lathe
« Last post by jwillard on June 21, 2018, 10:14:51 AM »
Thanks for the replies. I'm making progress but did run into an anomaly.

Let say I want to move a line. I select it, "M" , set a point on the line and then do a point relative. The dialog window pops up but, I can't enter a value into the Z axis box but, an entry into the Y axis effects Z.

Have i stumbled onto a bug?
9
General Discussion / Re: Going from X-Y drawings to X-Z for a Lathe
« Last post by Dr PR on June 20, 2018, 07:52:38 PM »
Jeff,

If you must switch to 3D mode the change you want to make is pretty simple.

1. In the Layers dialog, enable (UNLOCK) all layers of the drawing that you want to use for the CNC work.

If you have groups made up of objects on multiple layers, be certain that all occupied layers are enabled/unlocked.

2. "Edit/Select All" (CTRL A) to select all of the objects.

3. Set a handle (Edit/Selection Edit/Set Handles) (CTRL H) (NOT a drawing handle) at a point you want to rotate the drawing around.

4. Rotate (Edit/Selection edit/Rotate) (R) the selected objects -90 degrees around the X axis.

This will convert all +Y values to +Z values.

5. Save the file.

****

You should also be sure that you have no -X or -Y values in your drawing - many CNC programs (and 3D printers) don't know what to do with negative numbers. Set an origin point (Point/Origin) at the lowest X and Y values in the drawing.

Phil

Note: I have corrected the rotation axis - it should be rotated around the Z axis! Duh! Thanks to Bob P for pointing out my error.
10
General Discussion / Re: Going from X-Y drawings to X-Z for a Lathe
« Last post by Bob P on June 20, 2018, 04:55:43 PM »
In the General tab of the Options, at the bottom, you can change your working plane to X-Z.
If the drawing is already in the X-Y plane, switch to 3D and rotate the drawing 90 degrees so that it falls in the X-Z plane. Then you can switch back to 2D for any edits in the X-Z plane.
Pages: [1] 2 3 ... 10