topic Re: Question to understanding turning I-J-K-Values in HSM Post Processor Forum

Question to understanding turning I-J-K-Values

makko74 — Tue, 01 Sep 2015 11:51:49 GMT

Hi,

yesterday i've made 3 little nc-programs for a friendly company.
My first simple turning Parts with HSM. 😄
For the Post-Process i've used the fanuc turning.cps.
Now my question:
on milling I,J,K values are incremental from arc-start to centerpoint.
in the fanuc turning.cps stands:

_{var xFormat = createFormat({decimals:(unit == MM ? 3 : 4), forceDecimal:true, scale:2}); // diameter mode}

and for I and K outputs

_{// circular output
var kOutput = createReferenceVariable({prefix:"K"}, xFormat);
var iOutput = createReferenceVariable({prefix:"I"}, xFormat); // no scaling}

Is this normal thats I- and K-Values must also scale with 2 on turning?

Thank you in advance

Re: Question to understanding turning I-J-K-Values

skidsolo — Tue, 01 Sep 2015 12:01:38 GMT

Some machines can be programmed with either diameter or radius values for X. It can be changed by a machine parameter in the controller to suit the users preference. The Haas turning post is does not have scaled IJK. So the answer is they are different.

http://forums.ge-ip.com/showthread.php?t=14635

Re: Question to understanding turning I-J-K-Values

makko74 — Tue, 01 Sep 2015 12:13:39 GMT

AndrewWard wrote:

Some machines can be programmed with either diameter or radius values for X. It can be changed by a machine parameter in the controller to suit the users preference.

AndrewWard wrote:
Some machines can be programmed with either diameter or radius values for X. It can be changed by a machine parameter in the controller to suit the users preference.

OK, and the effects are also on I and K Values. Right?

Thank you Andrew

Re: Question to understanding turning I-J-K-Values

Laurens-3DTechDraw — Tue, 01 Sep 2015 12:21:22 GMT

makko wrote:

AndrewWard wrote:

Some machines can be programmed with either diameter or radius values for X. It can be changed by a machine parameter in the controller to suit the users preference.

OK, and the effects are also on I and K Values. Right?

Thank you Andrew

The way the k&iOutputs are set-up here means are scaled like the X-value. So if X is scaled to diameter mode the k&i will be too.

Re: Question to understanding turning I-J-K-Values

makko74 — Tue, 01 Sep 2015 12:38:00 GMT

Laurens-3DTechDraw wrote:

makko wrote:

AndrewWard wrote:

Some machines can be programmed with either diameter or radius values for X. It can be changed by a machine parameter in the controller to suit the users preference.

OK, and the effects are also on I and K Values. Right?

Thank you Andrew

The way the k&iOutputs are set-up here means are scaled like the X-value. So if X is scaled to diameter mode the k&i will be too.

It was just incomprehensible to me thats the K -Values must also entered in diameter mode.
Now its a little bit clearer, i've no Lathe and the machinist is up to next week on vacation,
so i'm asking here.

Thank you for your time and answers Laurens and Andrew

Re: Question to understanding turning I-J-K-Values

Laurens-3DTechDraw — Tue, 01 Sep 2015 12:40:00 GMT

makko wrote:

It was just incomprehensible to me thats the K -Values must also entered in diameter mode.
Now its a little bit clearer, i've no Lathe and the machinist is up to next week on vacation,
so i'm asking here.

Thank you for your time and answers Laurens and Andrew

makko wrote:
It was just incomprehensible to me thats the K -Values must also entered in diameter mode. Now its a little bit clearer, i've no Lathe and the machinist is up to next week on vacation, so i'm asking here. Thank you for your time and answers Laurens and Andrew

Works like a charm on our Fanuc machine. 😉