OD Taper Wizard Help Needed

[Mr. Technical]

Hi Guys,

I recently got my lathe set up, but am having problems using the OD Taper Wizard.  I'm trying to put a 45 deg taper (90 degree included point angle) on a 1" diameter rod.  The wizard seems to want to make a taper with the wrong angle.  It's making the angle very blunt, or flat.  The odd thing is that the display of the toolpath looks right.

What I'm looking for is a point on the end of the bar, that goes from a point all the way to the outer diameter (no step).

The specifics:
I am a licensed user.
I am using Diameter mode.
OD Taper settings are as follows:

X End:  0.0
Angle:  +45.
X Start: .5
Z End: -.5
Z Start: 0.0
Clearance: .1

I have no idea what I'm missing.  Any help would be greatly appreciated!

Mr. Technical

[Hood]

Does your lathe cut accurately normally?
Can you attach your xml please.
Hood

[mr.c]

I have had some issues with wizards. In particular, direction of cut. I am looking at your settings and it looks,to me (I may be wrong) that with x end at 0.0 you are wanting it to cut to the center of your stock. But your z end is at -.5 which is moving the other direction? Or am I really confused?
Sometimes the wizards are really confusing to me(not particularly intuitive) and sometimes they just will not do what I need them to do and I have to write my own code.

[Mr. Technical]

Hood:  Still figuring out if there are problems with different types of cuts, but 1" of commanded Z movement equals 1" of actual Z movement, and same thing for the X axis.  That was one of the first things I looked at (steps per revolution).  XML attached.

mr.c:  Thanks for the input.  Z zero is the face of the part, and X zero is the center.  X .5 is with the tool touching the side of the 1" diameter barstock, since I'm in Diameter Mode.  Z -.5 is half an inch from the faced end of the part (towards the chuck).

Also, I'm attaching the g code that running the wizard as stated produces.

Mr. Technical

[Hood]

When I try with your xml it works fine for me according to code and toolpath but when I load the code you posted it is not correct. Can you take a screenshot of the settings you have in the wizard just in case I am doing something different.
Hood

[mr.c]

The way my mind see's it is perhaps why it is not intuitive to me. I understand the positions of x0 being the center of the stockand x.05 being the diametric edge of the piece and z -.5 being a half inch back from the face. It is the start and finish that confuses me. My mind pictures it this way. With a taper to start at x .5 and finish at x 0.0 the tool moves left to right. And to start at z 0.0 and finish at z -.5 is a right to left move. In reality that may not be the intention of the wizard but it is how my mind pictures it, which makes it counter intuitive to me.

[ERP]

Ignore wrong thread

[Mr. Technical]

Here's the screenshot showing how I've filled out the fields.  Thanks for all the help!

Mr. Technical

[Hood]

I get totally different code than you get from the wizard with your settings and xml, have attached what I get, can you load that and see what its like. BTW heres a screenshot of what I get when I load the code you posted.
Hood

[Mr. Technical]

OK, something weird is definitely going on. 

Loading my XML on a different computer, and inputting the ODTaper2 file you supplied I get what you can see in the ODT1 screenshot file below, which looks very close or identical to the simulation diagram I get on the actual lathe computer where all of this started.

Loading the same ODTaper2 file under the standard non customized XML, (Mach3 turn) I get what appears in ODT2 screenshot.  Interesting thing is, this looks like what the lathe actually cut.  You can see how flat the angle is-it's not the 45 degrees I need.

Incidentally, what version are you running?  I'm not at the lathe so I don't know the exact version, but it's in the 2's I think.  The other test computer I'm using is running version 3.042.

Mr. Technical