G code Lathe help with Radius

[LowBuckX]

I taught myself how to program basic tool pathes but cant figure out inside or outside radius nor can any of the schooled people at my shop. The manual is so poorly translated (Hyundai) that I just dont get it...

So If I have 2 inch DIA. stock and wanted like a 1/2 in radi either in or out how do I do this... G- code Seimans control (Hitrol) same as Mazak


Much thanks

[CRead01]

g02 is clockwise g03 counterclockwise r for Radius

[LowBuckX]

so give me a basic tool path
M03 S3000
G0 G90 M08 X2.00 Z0
G01 G95 ???????????????????????????????????

MO5 M09
M06
M30 YADDA YADDA

[B Schein]

%
O0000 PROGRAM NUMBER
G20 SET MACHEIN TO INCHES
G0 T0101 TOOL NUMBER AND OFFSET
M8 COLLANT ON
G97 S1000 M03 CONSTANT SURFAGE FOOTAGE SPINDal SPEED CAPED AT 1000 SPINDAL ON CLOCKWISE
G0 G54 X0. Z.1 ABSOLUTE MOVE TO G54 WORK CORDINATE SYSTEM AT XZ CORDINATES
G50 S1000 NEEDED TO SET MAX AND MIN FOR SURFAE FOOTAGE
G96 S700 SPIDAL SPEED 700 RPM LOWER LIMIT
G99 G1 Z0. F.01 INCRANTAL FEED MOVE TO Z0 FEED AT .01 PER REVOLUTION
X1. STILL FEED MOVE
G3 X2. Z-.5 R.5 CCW INPULATON TO XZ CORDINATES USING A RADIUS OF .5
G1 Z-.6 FEED MOVE
X2.1 Z-.6 FEED MOVE
M9 TURN COLLANT OFF
G28 U0. W0. M05 ZERO RETURN COULD ALSO USE X AND Z IN PLACE OF U AND W MOST MACHEINS CAN USE EATHER M5 SPINDAL OFF
T0100 CANCAL TOOL OFFSETS
M30 REWIND AND HOLD
%




I added a comintary to the code

[LowBuckX]

Some of that code Im lost on .. Must study...lol

Not sure of the U and W dont think its used on my control % not sure on either. T1D1 is tool position on turret. (T2D2 T3D3 OR T3D103 FOR SECOND EDGE)

[B Schein]

% is used at the beginning and end of all nc programs that are transmitted in and out if macheins you wont see it unless you programing from a pc your machine can probably uses u and w but not necessary you will needed them for threading as far as offsets it depends on the machine they all have there own thing the from I posted is the most generally used form

[LowBuckX]

Thanks man that helps alot... will play around at work today

[Mathius]

I don't want to hijack anyone's thread, but while we're on the subject of lathes, my dad is getting one from work for free.. He's plant manager of a company, he's in charge of the whole building, and they were literally going to throw one out because they got a new one, so he managed to get hold of it. He asked me if I had a use for one, and of course I answered "hell yeah!.... If I can figure out how to use it."

I don't know anything about it, it's still being stored in one of the garages on site at his plant, but I would like to learn how to use one. Any suggestions on where to start, outside of some vocational courses? There is one place I know that might teach that sort of thing, but it isn't close.

There are probably others, but I am unaware of them at this time. Is it hard to learn how to use a lathe from a book?

I used one for some very basic beveling when I was practicing for a pipe certification (TIG), but I did everything by hand, I didn't know the first thing about setting the machine, and there was certainly no precision involved, just eyeballing it.

Mathius

[LowBuckX]

My first job that involved Lathe/Bridgeport work exclusivly was some years ago.. My training involved The boss (3 man shop) showing me "This makes it go , This is the brake, here is the emergency stop there is our scrap pile take a few days and get intimate with the controls and what they do.. The rest will work itself out"""

Ive worked up to CNC controls by studying programs and how they affect the tool movement and have been very succesful at g-code and basic turning/facing operations without ever stepping foot in a class.. That being said If I had a degree of some sort Id make more money but I know more than the schooled people at my work because of the way i learned this stuff ... you cant learn experiance in a book..


BTW I got the radius sorted out.... For some reason its a B code not R..


IE G3 X2.0 Z-.500 B.500 Must be a hitrol thing

[Mathius]

Ive worked up to CNC controls by studying programs and how they affect the tool movement and have been very succesful at g-code and basic turning/facing operations without ever stepping foot in a class.. That being said If I had a degree of some sort Id make more money but I know more than the schooled people at my work because of the way i learned this stuff ... you cant learn experiance in a book..


BTW I got the radius sorted out.... For some reason its a B code not R..


IE G3 X2.0 Z-.500 B.500 Must be a hitrol thing

True, but I don't plan on doing this for a job, (at this point) I just want to know how to use it. I can't verify for you that it even has CNC. The lathe I used in the past had a bunch of like... sliding levers that you set it with? That's the best way I can describe it. But like I said, I didn't know how to set them. I just manually turned the wheels and ground a bevel on some stainless pipe.

There was a guy in the class who actually knew what he was doing, and turned a flywheel for me by setting the machine. I had to weld a fixture to hold it in the lathe.

Mathius

[LowBuckX]

""""""""This part pertains to you more then"""""""""

My first job that involved Lathe/Bridgeport(manual like you will have) work exclusivly was some years ago.. My training involved The boss (3 man shop) showing me "This makes it go , This is the brake, here is the emergency stop there is our scrap pile take a few days and get intimate with the controls and what they do.. The rest will work itself out"""

[Mathius]

""""""""This part pertains to you more then"""""""""

My first job that involved Lathe/Bridgeport(manual like you will have) work exclusivly was some years ago.. My training involved The boss (3 man shop) showing me "This makes it go , This is the brake, here is the emergency stop there is our scrap pile take a few days and get intimate with the controls and what they do.. The rest will work itself out"""

*laugh* At least I can weld, so at worst, I'll go through a lot of tooling.

I will definitely have a lot to learn, but you reminded me of a story:

My ex-fiance (5 years ago or so) had a brother that ran a CNC lathe... He lied on his resume and put down all kinds of experience he didn't have.

The guy who interviewed him must have ran the company or something, I'm assuming it was a small business type setting. Anyways, he says to him something like, 'There's no way in hell you have all this experience, but I like your guts.' He says, 'If you can look at this machine, and figure out how to turn it on, we'll give you the job'.

He did, and they did, and he ended up making pretty good money.

Can you actually turn square stock down to round bar if you wanted, or do you have to bevel it first? I would think the little blade knicking the corners would be bad for the tool, and possibly cause a projectile.

Mathius

[LowBuckX]

I asked a guy that did contract work for NASA the same question about square stock to round once. He told me" Boy I can make square stock round on a lathe and round stock square on a mill but do you realy want to pay me for the time..lol


Yes you can make square stock round. but you either need realy large stock using a 3 jaw or the hastle of a 4 jaw.... Yes it beats up the inserts but not as bad as you imagine it would.

MY strongest advice to you is """get the lathe no matter what brand and spend a few hours and figure out what lever does what then post back Make and model.. Hell even if you dont end up using it If its a Warner Swasey or other good Machine Tool people will line up for it$$$$$

[CRead01]

I asked a guy that did contract work for NASA the same question about square stock to round once. He told me" Boy I can make square stock round on a lathe and round stock square on a mill but do you realy want to pay me for the time..lol

x2 we have done it at work but only for things that have to have square and round portions. you usually use a 4 jaw chuck and indicate it in. just takes time.

[Mathius]

I asked a guy that did contract work for NASA the same question about square stock to round once. He told me" Boy I can make square stock round on a lathe and round stock square on a mill but do you realy want to pay me for the time..lol

True, but he's being paid to do it. For the hobbiest, sometimes you use what you have. Also I'm sure there are times when a transitional piece comes in handy. Think of a wood lathe, and those bars they used to make for chair backs that transition from square to round.

MY strongest advice to you is """get the lathe no matter what brand and spend a few hours and figure out what lever does what then post back Make and model.. Hell even if you dont end up using it If its a Warner Swasey or other good Machine Tool people will line up for it$$$$$

Yeah, we're trying to get the garage cleaned up so we can figure out where it's going to end up. I still haven't seen it to see how big it is or anything like that. There's a new motorcycle we have to find a home for as well, so things are getting cramped.

I totally intend on using it though if I can figure it out. I'll have to start learning how to use a micrometer, huh? And start taking more measurements with calipers and such? dial indicator?

Mathius

[BMF Machine]

Day'um foriegn machines....... What happened to a simple g01 z0 x1.0 to your start point then a g02 z-.5 x2.0 R.5??? WorkS on HAAS!


Mazak, Okuma... Hwatcheon....CincoM.....HMT(Seimans as well)....Hyundai..... Take lessons from Haas and keep it simple!

[novaderrik]

the flat laser i operate at work uses the same programming language as any other cnc machine.. i'm getting good at the laser, and just waiting for the guy that runs the cnc machining center to get fed up and quit (he's really, really close..) so i can get me some on the job training and learn how to make some cool stuff..

[BMF Machine]

Most guys running CnC's are always fed up?lolol I know I am. I have been runing them since 93 .

[novaderrik]

he's fed up over the way management is treating him- you know, wanting him to do the work of 3 people with 20 years of CNC experience, but with the pay of a McD's burger flipper .. but isn't that the case everywhere?
i'll take the low pay for a while if it means i can get some paid on the job training to give me more options in the job marketplace and new skills to make cool stuff for my cars..

[BMF Machine]

Well, not quite? I make 22.00 a hour at my dayjob. I have 10 years on Featurecam, 4 years on mastercam...... I usually can do the work of three people, computers are amazing. I also run my own CNC shop out of my shed. I just get sick of it sometimes? I own my own Featurecam, just for the cool stuff. I too started at 5.00 a hour. Just never say.....I will for more money; My attitude has always been, Try your hardest, show what you can do..... then the money will come. I have kind of quit making custom anythings. With two kids and a bad back I try to avoid my shop and I am unable to work at my dayjob. Hopefully these epidural blocks will straighten me out some. Good luck; Machining can be a rewarding career; but a lot of headaches to get to the top. I am a 13 year Journeyman Tool and Die maker. I have seen the good the bad and the UglY!. Somebody will pay you what you are worth, you just need to find a boss that appreciates your talents.

Some of my stuff is here........
www.BMFCUSTOMMACHINE.com
But, I haven't accepted a custom job in 3 years? I am just way too busy with production maintenance for my biggest customer; Alcoa.