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can anybody write a CNC program for lathe please.?

bala_51083

By bala_51083,
in Industrial Forum

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Kyle Waters Newbie

Kyle Waters

Posted
Posted

When you click on the button for plunge parameters you will have additional options. depending on the set-up of the holder, your CNMG432 insert only has 5 degrees of clearance to turn the back side of the arc. I see in one of your screenshots that you have a DNMG tool selected though. If the tool is set-up like the screenshot, you will then have plenty of room to get at the entire arc, provided your chuck jaws aren't in the way.

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Lloyd Newbie

Lloyd

Posted
Posted

On that Plunge Paramerters page, if you are using a VNMG tool click the 3rd option in the top row.

 

Then you will need to enter a clearance angle in the right window of the 2nd row. Consult your tooling manufacturer catalogue for your toolholder's clearance. VNMG is probably around 45 degrees.

 

HTH

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4xxx4 Newbie

4xxx4

Posted
Posted

Parameters for the VNMG331 tool you are picking;

depth of cut .04 or .05 depending on feed rate

Stock to leave x.01 z.002 for front of radius

stock to leave x.01 z-.002 for back section of radius.

I would program these with two different toolpaths.

uncheck equal steps. it will make the cut depths from the finish diameter and the first cut will be light. Having the last cut come out as light/shallow is preferable for accuracy.

I use 47 degrees for back clearance on the vnmg tool and it works well without giving alarms or over commiting the tool to stuff it can't do.

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bala_51083 Newbie

bala_51083

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  • Author
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does the program i got thru mastercam make the part.plzz let me know guys.

%

O1001

G20

(PROGRAM NAME - ARCDATE=DD-MM-YY - 29-09-06 TIME=HH:MM - 20:51)

(TOOL - 1 OFFSET - 1)

(LROUGH OD FINISH RIGHT - 35 DEG. INSERT - VNMG-431)

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%

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DavidB Apprentice

DavidB

Posted
Posted

I'm coming in here late bala but have you asked your reseller for help or training?

 

You have got good advice here on how and why and now even to check the G-code.

 

Seems your getting the whole job done through the forum.

 

I noticed the time on your screen shots 2.07 AM eek.gif Get some sleep dude cheers.gifcheers.gif

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4xxx4 Newbie

4xxx4

Posted
Posted

I agree. If you could post a example that has run on the beast, then we would know what exactly you need for format.

 

Also, when picking how to cut, you can choose "canned rough" and then "canned finish" to get the type of G-code output like has already been posted. The generic MPLFAN post processor you are using might just need a few tweaks to get it to post useable code. Having to read a mile of straight G-code is really inconvenient when you could write it in 1 page to do the same thing.

Lathe canned cycles are the most powerful metal removal tools.........

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