HELICAL MOVE IN HEIDENHAIN POST

[GHASS]

Hi all, morning.

 

I´m have here one Heidenhain TNC426 control,and my post for this it´s based in Heidenhain post include in Mastercam Cd, but i make some small changes.

However, this post don´n create helical moves, that in Heidenhain command is different of ISO G Code helical representation, with G2/G3 commands.In this control (TNC426), this function (Helical moves) it´s represented with DR and IPA commands, example:

 

CC X+40 Y+25

L Z+0 F100 M3

LP PR+3 PA+270 RL

CP IPA-1800 IZ+5 DR-

 

My post don´t generate this function, and my toolpaths, like a Helical Drill and Helix entry in pockets, for example, are big and non uniform, with facets, different of arcs moves.

 

Follow below the stretch of my post that generate motion output:

 

 

# --------------------------------------------------------------------------

# Motion Output

# --------------------------------------------------------------------------

prapid # Linear line movement - at rapid feedrate 0

pcan

pcan1, n, sgcode, x, y, z, pcc, pfr, strcantext, e

pcan2

 

pzrapid # Linear movement in Z axis only - at rapid feedrate 0

n, sgcode, z, pcc, pfr, e

 

plin # Linear line movement - at feedrate 1

pcan

pcan1, n, sgcode, x, y, z, pcc, pfr, strcantext, "M90", e

pcan2

 

pz # Linear movement in Z axis only - at feedrate 1

n, sgcode, z, pcc, pfr, "M90", e

 

pcir # Circular interpolation 2

 

if plane = zero, pxyarc, e

if plane = one, pyzarc, e

if plane = two, pxzarc, e

pxyarc

pcan

n, strcc, *i, *j, e

pcan1, n, strc, x, y, *sgcode, pcc, pfr, strcantext, "M90", e

pcan2, e

 

pyzarc

pcan

n, strcc, *j, *k, e

pcan1, n, strc, y, z, *sgcode, pcc, pfr, strcantext, "M90", e

pcan2, e

pxzarc

pcan

n, strcc, *i, *k, e

pcan1, n, strc, x, z, *sgcode, pcc, pfr, strcantext, "M90", e

pcan2, e

 

 

My doubt is: somebody already this problem and know correct this limitation in Heidenhain posts?

 

 

Thanks for all replies.

 

GHAAS

 

[ 12-16-2003, 10:20 AM: Message edited by: GHASS ]

[mayday]

start bt looking for this,I do not know which post you have. are you running V9 sp2?

 

do_full_arc : 1

helix_arc : 1

 

then look and see if you have this in your motion output. you may need an updated pst.

 

pcirout1 #Output to NC of circular interpolation

pbld, pn, "CC", parc, peob, e

pcan1, pbld, pn, "C", sgfeed, pfxout, pfyout, pzout, pcout,

strcantext, *sgcode, pccdia,`feed, peob, e

 

pheloutz #Output to NC of helical interpolation

pbld, pn, "CC", parc, peob, e

pcan1, pbld, pn, "CP", `sgfeed, *sweep,

!xabs, !xinc, !yabs, !yinc, pzout, pcout, *sgcodeh, pccdia, !i, !j, !k, !iout, !jout, !kout, `feed, strcantext, peob, e

prv_gcode = m_one

 

 

You may want to ask your reseller for this post (heid_conv.pst) and start with that

[Guest CNC Apps Guy 1]

quote:

---

I do not know which post you have. are you running V9 sp2?

---

Look at the title of the topic...

[mayday]

GHAAS,

One thing to remember in conversational format it has to have this output for Helical moves

 

712 CC X-18.7 Y+0

713 CP IPA+360 Z-0.12 DR+ RL

714 CC X-18.7 Y+0

715 CP IPA+360 Z-0.18 DR+ RL

716 CC X-18.7 Y+0

717 CP IPA+360 Z-0.24 DR+ RL

 

it cannout output Z moves with X,Y in normal absolute circle moves. like this

 

578 CC X-18.685 Y+2.7361

579 C X-19.185 Y+1.87 DR+ RL (no Z move)

580 L X-17.746 Y+1.0392 RL

581 CC X-18.346 Y+0

582 C X-17.746 Y-1.0392 DR- RL

 

 

If you output in ISO format it will do G2,G3 arcs with X,Y,Z moves

[Brian Scullion]

Request the master Heidenhain post from your reseller "HEID-CONV" .It does what you want

Helical moves and all.

[GHASS]

Thanks for all replies.

 

I´m using V9SP1.Exist some difference in threads above because this?

[mayday]

quote:

---

V9SP1.Exist some difference in threads above because this?

---

no, 9.1 is ok

try and get a hold of the Heid_conv.pst it should solve your problems. there are others I have seen that do what yours currently does. I think you have an early version of a conversation post that dont have all the new features. If your reseller dont have it asked them to get it thru emastercam. I belive that is where mine originated

[Allan Brown]

'Heid_Conv.pst' is now called 'Mpmaster_Heid_Conv' - it's available to your reseller. Have them request it from me.