mpmaster for horiz indexer / force B at tc

[Mike Whitten CAD/CAM Contractors]

Hello,

 

I am been trying to figure out how to take a box stock mpmaster 9.1sp2 post and set it up for an Horizontal machine with an indexer. The problem is that we need it to force the B output at tc even if it does not change. This is just a safety issue so that you can just search for a tool and hit go. I have been using the mpmaster post on full rotary horizontals for years with great success but I just can't figure this out. I am very weak in posts and am getting lost when it goes from pindex to indx_out. I did a search and found this some stuff but I still could not figure it out.

 

http://www.emastercam.com/ubb/ultimatebb.p...t=011296#000002

 

Any help is greatly apprciated,

 

Thanks,

 

Mike

[Allan Brown]

IMHO you should forget about the index variable (leave it at 0) and just use:

 

vmc : 0

rot_on_x : 2

srotary "B"

 

Front is B0.

 

Just make sure that your toolplane land on the quantum B index step.

 

I find that you don't really ever want the post to round your B angle to a quantum index step, because your coordinates will be out. Better to see that B is wrong, adjust toolplane, repost. I've never found cause to use index : 1.

[Mike Whitten CAD/CAM Contractors]

Dave,

 

Do you mean that just say it is a full rotary machine and adjust formatting accordingly?

 

This:

index : 0 #Use index positioning, 0 = Full Rotary, 1 = Index only

 

Not this:

index : 1 #Use index positioning, 0 = Full Rotary, 1 = Index only

 

?

 

Thanks for the help,

 

Mike

[Allan Brown]

Yep - that's what I'm saying - how does the formatting differ?

[Mike Whitten CAD/CAM Contractors]

Thanks Dave,

 

I may have used the wrong terminology about the formatting but I think I may be talking about a few simple things like a decimal point in the "B" address. I can do this easy. I am going to work on this post later today as I have to get some stuff done for Monday morning.

 

Thanks for the help,

 

Mike

[wtsylvester]

I'd go for simple

 

Just hard code G0 G90 B0. and m-code if needed in the ptlchg_com routine of the post .After it has read the work offset , you may need to break that line into a couple of lines so you don't have 2 m-codes on the same line, just make sure it's before the "G43" line and after the w/o read

watch your commas and lil e's

 

And set your B offset in the work offsets of the machine, so it will B zero to that value, after all you are already there for your xyz offset values

hmm that leaves pallet check :)But then the machine can control that too.

 

From what I saw at IMTS 10 will have a program that helps one to setup a post now, instead of having to go thru all of this

 

We got 300+ work offsets, but no tooling

And lazy susaning the parts in and out is our current method

[Mike Whitten CAD/CAM Contractors]

Thanks for the tips wtsylvester but we must be able to have the post output the B rotations according to the tool plane. IOW, we may not start on B0. The mpmaster works real well for all of the full forth machines so I will just set the index variable as I believe Dave was saying:

 

index : 0 #Use index positioning, 0 = Full Rotary, 1 = Index only

 

I just thought that since it was an indexer I would just change to index : 1.

 

Thanks,

 

Mike