What about:

Break top line at centerpoint

Create Spline/Curves/Chain (selecting line at breakpoint)

Modify/Break/Many Pieces/By Length/Number of Segments (26)

I think it gives the same numbers

That's why I suggested trying a different number of flutes.

Try running the finish pass in reverse to see if the problem moves to a X-Y- corner.

This Thread Is Worthless With Out Pics! lol

TTIWWOP

Lollipop mill

If it's happening on only 1 of the inside corners, and I assume there's at least 4, and they all have the same amount of material left over, then I'd have to guess backlash issue. You could try a different number of flutes though.

Are you using a 1/4" endmill?

PTD PHP41FV 25/64"

or

Dormer R458 25/64"

Both are assuming you don't have coolant thru.

I have used the 1/4" PHP41 down 3/4" in round SS starting on a knurl with only external coolant S3000, 10ipm, no peck.

edit: probably around $80.00

edit2: Don't worry about hole size. With carbide it'll either be right on size or broken.

edit3: If the surface is flat within a couple degrees don't spot it. Carbide doesn't need a spot. If you just absolutely need a spot (true position of .001" or something) then make sure the angle is greater than the drill point, ex. 140º.

I put points in the center of the holes at the depth I need to create the different size chamfers, then use incremental depth. Works like a champ.

Thank you very much!

Good morning everyone. I was wondering what is the recommended method for turning an expanding 16C collet? I have bored out OD collets, but those come with pins that go between the slits. What's the dealie-o?

Thanks in advance for any and all replies!

That looks exactly like what I thought you were describing. I just can't envision how it's supposed to transition from the .250"R to the .125"R's.

TN = Last T#M6 executed

Example: #V1=TN

Edit: DOH! Too slow.

I've never probed on a machine, so I'm talking out of my a$$, but my guess is;

1. probe the hole

2. take the size and subtract the minimum hole size from it i.e. (.423-.417=.006)

3. add that into your tp callout (.004+.006=.010)

4. use the new value to check position.

I worked at a shop that plumbed a solid line against the inside back of the machine and then pointed it at the top of the part/tool intersection. Since it wasn't on the head it didn't move.

In any event it would be:

True position with MMC = True position result - (measured hole size - minimum hole size)

Or:

True position allowed = True position tolerance .004" + (measured hole size - minimum hole size)

Now I'm just getting myself confused. What number do you want?

Oh and do not forget the smaller you make the hole the more Max Material Bonus you got. The larger you make the hole the less Max Material Bonus you got.

That sounds backwards to me. Shouldn't you say that the larger the hole diameter, the more bonus you have? The position is based on Maximum Material Condition, not Least Material Condition. So you have a true position of .004" when the hole is at .417". With the hole at .424" you would have a true position of .011". Seem right?

I think I got it. I added in:

#Address string definitions
strq	    "Q"

and changed ppeck to this:

ppeck           #Canned Peck Drill Cycle
     pdrlcommonb
     result = nwadrs(strq,peck1)
     pcan1, pbld, n, *sgdrlref, *sgdrill, prdrlout, pdrlxy, pfzout, pcout, 
       *peck1, *feed, strcantext, e  
     pcom_movea

Hi guys, I need some help getting mpmaster (V9) to post out both ijk style peck drilling, as well as q style. Q's come out fine before IJK calls, but after IJK calls they end up being just I's. I am pretty sure it has something to do with switching the addresses back but I couldn't get it right.

Here's what I have so far;

ppeck           #Canned Peck Drill Cycle
     pdrlcommonb
     pcan1, pbld, n, *sgdrlref, *sgdrill, prdrlout, pdrlxy, pfzout, pcout, 
       *peck1, *feed, strcantext, e  
     pcom_movea

pmisc2          #Canned Misc #2 Cycle (HAAS DRILL WITH IJK)
     pdrlcommonb
       result = nwadrs(stri,peck1)
       result = nwadrs(strj,peck2)
       result = nwadrs(strk,peckclr)
     pcan1, pbld, n, *sgdrlref, *sgdrill, prdrlout, pdrlxy, pfzout, pcout, 
       *peck1, *peck2, *peckclr, *feed, strcantext, e  
     pcom_movea

Thanks in advance for any and all replies.

I'm with Dave on this one. And I just wanted to add that sometimes it is cheaper to hurry up and scrap a part then spend an hour creeping up on dimensions so you don't waste $0.50 in material and 10 minutes in cycle time.

Thanks everyone! Dorian Tool is the winner. The rest weren't quite right.

I am looking for a tool to put a 30º chamfer on the backside of a part and was wondering if anyone had ideas of who to go to for an indexable tool. The chamfer measures .500" wide so it's got to be a pretty good sized insert.

Thanks in advance for any and all replies.

If your hole is the right size before you tap it I'd try tapping it by hand. That'll tell you if the tap is no good.

I have trouble to get 2-56 3B STI tap to get to size.(nogo is going)

Perhaps because you are using a tap for helicoils?