Master the G71 Roughing Cycle! - Haas Automation Tip of the Day

You might feel like you just learned a new cheat code after watching this one! G71 is a super useful cycle for stock removal on both the OD and ID of your turned parts. But it can leave you with questions if you don't know all the ins and outs. Mark breaks it down and gives simple directions for understanding and implementing G71 in your programs.

Here is the link to the pdf for the Lathe Programming Workbook:

Here are links to the videos Mark mentions during the program:
Troubleshoot your lathe G71 and G72 Roughing Cycles

Drilling on a Haas Lathe

Lathe Safe Tool Change Positions, G53

VPS Visual Programming System on Haas Lathes

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

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[kingcam]

you are the one of best teacher of cnc on YouTube

[marciszarins]

Nice video, can't wait for the tool noose compensation video.

[Badmike]

Can’t live without it. Like a dot to dot picture. Doing this on a 1983 Fanuc T6 Control on Mazak CNC lathe.

[nancyquezadanunez]

Mark You are the best teacher I ever see

[prafullarwade]

By far the most simple but great video explanation of G71 roughing cycle with in-depth information & tips and tricks.

[twooldfartsinanrv]

In the early 90's I worked as an AE for Smartcam. Wrote a macro for the software taht would kick a a G71 cycle in stead of a line for line code. Saves a ton of memory for those old cnc machines. My customers loved it

[grecco_buckliano]

The illustrations used in this tutorial are FANTASTIC. MOAR PLEEZE.

[CNCDudex]

My boy Pokey LOVES the Haas Lathe Workbook !!

[geo]

I used to have a guy working for me on the afternoon shift that didn't get Roughing Cycles. He would type out the finish tool path for the part, copy and paste those tool path lines multiple times and then edit the "x" values to increment from rough to finish size. Led to long and ugly programs that were difficult to understand and edit. I tried to teach him G71, but he didn't want to learn. He is no longer with our company.

[jimburnsjr.]

My favorite of your videos, one of the better instructional videos I've ever seen; thank you much. Need to know information, even with cam software as you are going to have to verify and debug the post.

[chrisgomes]

I'm just learning this in my training program. These videos are really helpful. Thank you for taking the time to make and share them.

[ntlindustriesinc.]

Thanks for the tips! Glad to have caught the live over here at NTL Industries in Michigan!

[duckslayer]

I recommend using your fingers to program instead of doing it "by hand" trust me.

[natesansrinivasan]

Thank you for your crystal clear examples and teaching 🙏👌

[quelthalas]

@markterryberry4477 absolutely love your tod video series, i'm training to become a machinist, and are practicing on a HAAS TL1 lathe. so double bonus of having great videos, i can watch right next to the machine being talked about, putting theory into practice in real time, so to speak. keep the videos coming!

[James-fsrn]

👍Mark, on the ID example the start and end points don't line up like the OD example. Is in not necessary just as long as the position stays in the confines of the start point? Thanks

[shawn]

Great explanation of those pesky Haas G71 alarms most of us have seen.

[PaulChacon-mjzv]

Thanks for the video. UT really helped. An you do one on G75. OD grooving? I used that to rough out a .936" diameter, 1" long. When I went back with the same grooving tool to finish the diameter, the graph showed the G75 still activated. I tried to use G80 to cancel G75. It didn't work. The graph showed the grooving tool cutting down to X 0.

[TheDefeatest]

So that's why I have to use a negative value for my x when boring! I always thought that was just a weird milltronics thing.

[kingcam]

i loved your video. but in my case my machine rpm not changing while it going to cut large dia to small dia. i used same program structure with G50 and G96 in metric form. but my machine rotates same rpm which i used with G50. pls help me out if there is setting. (while cutting machine say Spindle rpm is set by G50.)