Programming HAAS Servo 300 Bar feeder for beginners/Intermediate 

Thank you for checking out my video and the kind words! 🤘😎🤘

Thank you for the kind words and watching my video!!

Ha!!!

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Oh wow!! I personally haven’t used the new style bar feeder that Haas has but it looks cool !

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I know usually every machinist will program differently, but for me personally……I have all the machine defaults as my first line of code…from there I add my G105 line ….for example G18 G40 G54 G80 G97 G99; ; G105; (Whatever you entered on your SERVO BAR page for values such as minimum clamp, Initial push, Part length + cutoff, length of longest bar, etc,etc....G105 will now pick up those values) (If you are using I,J, and K values in the G105 line....that will override what you have entered on your servo bar page) T101(Roughing tool) (call up rpm's, rapid moves etc,) T202( Finish Face and turn) (call up rpm's, rapid moves etc,etc) Ex..ex. Now, the lead in that’s ground on the front of the bar usually only comes into effect for a NEW bar and I personally always program a parting tool to stay about .020 from G54 Z0. and just have it do a rough face path……then I use my main tool to finish face and go from there. If you want, you can always do block delete if you want to bypass the rough facing tool. As for the bar liner…..we have 2 lathes with the steel liners also with the o-rings…..no cap on those……the o-rings are supposed to act as a grip to the liner…….the plastic liner in the video is on a lathe that was from around 2005 ......they are nice.... you then put a cap on the end so the liner doesn’t come out.

@@TimsCNC-Tractors-and-more I was more curious about the codes inside the program to activate the barfeeder but as you said it's just G105 and I don't think it matters if it is before the 1st tool or before M30 at the end. I program ea day so I'm fine there and my prog start block is the same as yours anyway except G21(metric)

@@MantismanTM Yup.....you can place it in the beginning or end of program.

@@TimsCNC-Tractors-and-more Well I thank you Sir for the help, my barfeeder is up and running, only thing left to figure out is why the program once finished will not restart automatically on its own. Could this be because I have OP.Stop ON? my last 3 lines in prog are. G0X150.Z150. (safe Tool Change pos.) G105 (barfeeder) M30 (end of prog back to start) % P.S. - I only send my turret all the way to machine home when first turned on and axis zero'd Edit: I think I need to swap M30 with M99

@@MantismanTM yes, after your G105 , change the M30 to a M99 for it to automatically rewind to the top and constantly keep the program going. You can always have a M01 before the M99 and if you need to have to program stop for any reason, you can turn on the optional stop button and turn it off when not needed.

Thank you for the kind words! No, there are no parameters you need to change. We have older machines where I work….not sure if newer machines you may need to adjust something.

So, I've dealt with machining plastic material in the past and once the collet opened to advance the material for the next piece, I've had the material lunge out of the collet a couple of times causing the facing tool to machine off a lot of material. So, here's a couple idea's that worked for me. If you are using a 3 jaw chuck, make sure your clamping jaws are not opening really far.....try to keep them as minimal as possible. If you are using collet chuck system,(such as a 5C collet) try keeping the collet pressure at a lower clamping force to help reduce the snapping effect of the collet when it's opening. Make sure your collet is free of burrs that might be allowing it to stick. Another idea I've done in the past is to install a piece of scrap round stock in one of the tooling holders to act as a dead stop. I would program it to come down to spindle center and then to stop at about .050"-.100" in front of your Z work zero offset.......from there you would do your G105 bar push and if for some reason the material wanted to bounce out, it would hit the dead stop of the tooling block and not go any further, and then the collet would close. From there you would continue with your program. But, doing it this way will require some playing around with, since when a new bar advances, you need to make sure the new bar push doesn't smack the tooling holder dead stop. This can be done by writing a block delete section in your program and have it bypass the new bar push by simply turning on and off block delete. It would require you to keep check on the bar feed page to see how much stock remains before it picks up a new bar and for you to activate your block delete section. (I hope that didn't sound to confusing). I hope these ideas help you.

Thank you for the kinds words and for watching my video!! Sadly, I’ve never use a cam system and I’m not familiar how those do the bar setup. I know you should be able to go to the bar feed page in current commands and view the length of material left. Im not sure if that’s the answer you are looking for.

@@TimsCNC-Tractors-and-more currently I've done it as you described it through the command page, But I've seen somewhere in the manual that all that information could be controlled by a set of codes. I'll look into it, if I find out something I'll post it here :)

The only other thing is using the I, J, K for an incremental override. You still use a G105, but you insert I ,J, K also. For instance, G105 I2.0 J1.500 k1.0 I is the bar push J is part length K is min. Clamp Not sure if this helps at all, but keep me posted!

Hmmm........When you set up the bar feeder, did you do the G105 Q4 and then handle jog your V axis till the stock was flush with the collet?....I'm gonna assume you probably did....but just in case. Then you run your G105 Q2 to push out your 2.00" Initial push. Now when you bring the tool you are using to face the part and you touch the front of the stock---did you set your G54 Z zero there? Did you remember to add the -.03 in your Z work offset to compensate for the stock removal per part? So in your program, all you need is just a regular G105 code with no Q values. For example - G105 T101 (face) G50 S1500 G97 S500 M3 G54 G00 Z0. (etc, etc) If you are using I,J, and K in your G105 line, those will override any values you have listed on your bar feed page.

If you have the G105 in the program, you have a couple of choices. You can add a block delete in front of the G105. You would put this symbol in front of the g105 code 👉/ You then would need to turn on Block Delete button. You can also do this 👉(G105) in parentheses and it will not read the code. Hope this helps.

@@TimsCNC-Tractors-and-more Thank you for your reply. One of our other guys showed up and was able to get it going.

@@justinodie8068 ……oh good…..glad you got it going 😎👍