Use G14 to Program Your Lathe Sub-Spindle The Easy Way - Haas Tip of the Day

Programming the sub-spindle on your Haas lathe couldn't be easier. Mark shows us how to use G14 to get this done and also how to setup the tools on your sub-spindle. And you might even gain a new appreciation for G15 that's usually running in the background.

Link to our Bonus Content page where you can find the G14 example program

Sync Your Spindles with G199

Use G53 Not G28 to Cut Cycle Times and Position Your Lathe Turret

Set Lathe Offsets Quickly with the ATP Option

Set Lathe Offsets Manually

If you enjoyed this video, please hit the like button and share it with a friend who’ll find it helpful . . . and thanks!

Follow Haas:

[richhuntsd]

Hi Mark. What I do on my tool setup for boring bars or long tools is to install the tool but don’t tighten. Eyeball the overhang to “not crash into the X axis housing.”Then I index the turret to place my long tool the back of the turret housing. I reach up and slide the tool until it touches and then back it off approx .250”. Then tighten the tool in holder.

[megaposter]

Thanks for your humility when you say you made a deicison for "no particular reason". It helps with understanding your explanations.

[atmosphericpressure]

I rotate the empty tool station into the position where the tightest fitment is and then use a scale to check from tool holder edge to the wall.
Very handy for the old school Mori slant lathes when setting cutoff tools.
Thanks for this tip.

[jasongreenawalt]

I said it in another video and I’ll say it again. The offsets page needs a “new data” and “previous data” line like my mori’s have so when you accidentally set offset 1 instead of 51, you can easily see the old value. Also would be great for tracking changes after touching off the tools to see if something is going wrong with the machine. I’m tired of taking pictures of my offset page with my phone.

[Darren_HFO_Champions]

Have you had any customers ask about the idea of having the Turret Position column in offsets become an actual / usable field? Example, using your video for discussion: It would be nice to program T101 for the front facing CNMG 432, and then T5151 to define the back facing CNMG, which is located in station 1. I've had this question multiple times at the HFO level, but was curious if this has been passed along at the factory level as well. Always great to see your new videos, Mark.

[ArtMiller-kcsda]

here's how I check it: unlock the turret and jog by hand around. we also find the max stickout for our x axis live tools and we just make sure they are less than that

[djnos]

you need to make a lathe with real interpolable C-Axis on the Sub-Spindle, not only an indexable one with +-0.5 degrees of tolerance.
I have a DS30Y and for this issue I have to machine the more complex pieces on another lathe

[richhuntsd]

Hi Mark. I think the Tip direction section was helpful. Basically don’t change anything, just think of it as if it were on the main. I was wondering about that. Thanks maybe DS-30 here I come in the near future

[metzenw]

When I first used a DS-30 I was so confused on how the Sub Spindle work as I had been running Mazak, Doosan, and Mori lathes with sub spindles. When you had to program on the sub spindle in the Negative direction I was 100% against that. After 2 days of testing and post editing, I found the best way to program this by using a G14 then a G101 Z0 you mirror the Z axis so it can be programmed the same as Every Other lathe in the last 30 years. The best way to set a tool change position is to cancel the tool offset and use a G59 to set your position. It's cleaner and you can move the position without program edits.. Using G55 for your B axis is safer as well, once again, no program edits. I wish Haas would set their Lathe controllers to work like the rest of the industry, and only use G14 as a Simplified method of programming. Not the only method.

[Robert-inhe]

Good to see you again Mark! Thanks for the video. My boss is contemplating purchasing a live tool Haas lathe and this video is a good head start for me.

Can't wait for Haas to make 5 axis lathes in the future!

Best regards.

[RambozoClown]

I guess checking tool clearance by watching for flying carbide is not an approved method?

[TimHess-vw]

Light bulb Mark, tool stick out... what about a sheet metal tab bolted(perhaps) on turret? Indication/safety tab for easy visual confirmation. Top of turret but low enough to rotate and check before hitting turret body or base, (before catastrophe). Like 1 or 2 positions above lock in. Place tool in, rotate CCW 1-2 positions, pull out to tab, clearance established. I will probably get to work on one for myself. Screw patents and copyrights, "Clarance" is a machinist's best friend! Clarance for all!

[troybeckstead]

Thanks for all of the amazing youtube content it has been a great tool.

[ganeshpandi]

Hai mark can you explain lathe threading cycle G76 chamfering value P020060
How to calculate 00 chamfering value

[jsathorne]

Recently got a DS30Y and was disappointed that you can’t program any type of milling in VPS. I think you should be able to program radial and axial milling through VPS, wouldn’t be complicated. Other than that, love the machine

[jasongreenawalt]

A separate detachable sub spindle tool pre-setter arm like other mtb’s offer would be something I would gladly pay for. Setting up tool offsets manually is such a waste of time and I loathe having to set up sub spindle tooling.

[mhdalizaghmout]

I would appreciate if you could set an explanation of G73 code. Thanks

[RocketGary]

I assume, we'll have a lot of jokes related to clearance between turret and tool tip 😃

[illustreerija]

Had to set a ID thread mill on the sub spindle on the DS-30Y, any future plans to make milling tools probing logic avaliable on the SUB spindle? (i.e. the automatic probing with spinning the tool CCW)

[Ryder]

I run a DS30Y and I just know that from the face of my post holders to the contact point of the back of the turret is about 4" so I always make sure any back tools are at 3.75" or less. Also I always touch off my back tools with the probe, you just have to take the main spindle jaws off and then there is plenty of clearance for even the max allowable stick out. But you lost me at the end changing the tip direction...