G96

[adamant]

Howdy folks,

Started a new Job and am running a Conquest 42 Lathe with an 0-t Control.

Took me a while to figure out what G code was causing a "illeagle G code" alarm.

It was G96.

They have been running G97 in all their program because the machine does not like G96?

I'm thinking there must me a parameter that needs to be changed in order to run G96?

Anyone know the param?

Thanks,
adamant

[beege]

G96 being Constant Surface Speed?

Do you prepare by limiting the max RPM to the limit of the machine like so?

G50S3000
G96S250

It SHOULD have CSS available, but I don't know what the parameter would be, and it would have to be a purchased option.

[adamant]

Originally Posted by beege G96 being Constant Surface Speed?Do you prepare by limiting the max RPM to the limit of the machine like so? G50S3000 G96S250 It SHOULD have CSS available, but I don't know what the parameter would be, and it would have to be a purchased option.

Well, I had no Idea you could buy a CNC Lathe without CSS? I think it would be a parameter.

Could also be something in the Safe index program.

Each opperation gets a G98P1 before and after the function.

I'll have to look and see..........I'm thinking there was a G97 in the safe index program......but that should not stop me from programming in G96 in the function.

A Parameter anyone?

[g-codeguy]

Could you post a sample operation that is causing the alarm? Selling a lathe without CSS would be kind of assinine. I don't think Hardinge does. We have several. Charging you for it would be worse in my opinion. Can't get much more basic than using CSS.

The G50 block isn't needed. Only problem is the spindle will wind up to maximum RPM with it left out. The G97 in the safe index program has absolutely no effect on you programming a G96 in the operation. It simply cancels the G96 out before starting a new operation. Sure would hate to be running a 1 inch drill with CSS in affect!


Never use G97 in the program as it is already in the safe index program unless I am changing from CSS to straight RPM for some reason, such as chatter on the front of the part.

Give me an example, and I will tell you whether or not you need to call Hardinge (or Fanuc). BTW, Hardinge has always been very helpful with their support on any type of question I have had for them over the past 20 some years.

[adamant]

Originally Posted by g-codeguy Give me an example, and I will tell you whether or not you need to call Hardinge (or Fanuc). BTW, Hardinge has always been very helpful with their support on any type of question I have had for them over the past 20 some years.

Here is how I program............
Pretty basic.

N1(RUF TURN WNMP431)
M98P1
T0101M14G96S300
G0X.25Z.002
G1X-.02F.0005
G0Z.1
M98P1
M1
N2(FIN TURN VNGP330)
M98P1
T0202M14S450G96
G0X-.007Z.05
G1Z0F.0005
X.202,C.025
W-.025
U.01
M98P1
M1
N3(SPOT DRILL)
M98P1
T0606M13S1350G97
G0X0Z.05
G1Z-.02F.0015(ADJ. FOR LEAD CHMF)
G0Z.1
M98P1
M30



Who do you talk to at Hardinge?

What is the red phone number?

BTW I think I have the param.............have to check it out when I go in today.


Thanks,
adamant

[g-codeguy]

Your programming is fine. Guess you can buy a lathe without CSS as standard. Who would have believed it?

Hardinge Brothers: 1-800-424-2400

Like any other business today, you have to go thru number punching to get to a live person. (versus a dead one! )

[g-codeguy]

adament, one of the things I did with the safe index programs was to put them in 9000 series protected programs 9001 thru 9004. M98P9001 made for more typing. Next thing I did was assign a number in their corresponding M-call parameter so that I could simply type M91 to call P9001 (which is P1 in Hardinge manual), M92 to call P9002 (Hardinge P2 sub), etc.

Don't know about you, but I don't appreciate operators accidentally deleting required programs. I did leave the P999 sub the same call. Only because we sometimes have to switch the X-Z moves around for long parts, and make it go to an X-axis clearance before going to the Z-axis index position. Operators have been good about not deleting the 999 sub because they have to go into it & change the Z index position for most jobs.

You are aware that G0Z.1 in your spot drill operation would be unnecessary if you used M98P2, aren't you? First thing P2 does is rapid the tool to Z.5 (or any other value you choose). Z.5 happens to be what the Hardinge manual suggests.

[Daleb]

I am not familiar with programming Hardinge's, but looking at your program maybe you need to put in a spindle direction with G96. Funuc's are M03 or M04.

[beege]

Daleb,

The M14 is usually "spindle reverse, coolant on", likewise M13 is "spindle forward, coolant on". M03 is just spindle forward, and coolant an separately is M08.

[adamant]

I think I have the Param.

Check param 902 bit #2

I'm guessing 0 is CSS off 1 is CSS on.

I looked last night and had all 0's in param 902.

[dcoupar]

Adamant,

The owner of this site has asked us (at the behest of Fanuc) NOT to post Fanuc proprietary stuff up here, such as OPTION parameters.

[extanker59]

dcoupar wrote "The owner of this site has asked us (at the behest of Fanuc) NOT to post Fanuc proprietary stuff up here, such as OPTION parameters. " So CSS is an option? Wow. Like adamant, I never thought you could get a lathe without it.