[kopsik]

Our company bought a Doosan Puma 2100LSY lathe with subspindle and Y-axis and alsa Mastercam X6.

I'm trying to turn a part that has a radius milled on one side (see attached picture) but I cannot make the right toolpath for milling.

Any help is appreciated.

[Superman]

This is a normal milling operation, with the part being held in a 3 jaw chuck

use a
2D_Contour, WCS=TOP, T&C plane=FRONT

Geometry is an arc in the XZ plane, that ( when projected each way ) would slice the bar to leave your model, & extend the geometry arc ends a little bit.

Depth cuts, as required
cutter is flat endmill, flute length greater that depth of cut, & needs to stickout of the holder more than the diameter of the job, cutter diameter must be same or larger than the tool shank ( leaves rub marks )

try using 2 ops instaed of Multi-passes, 1st for roughing, 2nd for the finish pass(es)
( gotta walk before you can fly )



Your machine will have limited Y minus travel, so do a lead in ( tangent ), lead out (perpendicular )

[kopsik]

Using the FRONT plane gave an error - A valid cut type was not found, check rotary settings.

Using the BACK plane posted fine but this code can't be right.

(TOOL - 4 OFFSET - 0)
( 10. FLAT ENDMILL)
G0 T0400
G19
M23
G0 X202.178 Z20.592
M35
C8.417
G97 S2500 M3 P12
X35.719 C55.949
G98 G1 X34.153 C60.058 F531.
X32.791 C64.492 F578.5
X31.65 C69.24 F624.3
X30.746 C74.269 F665.9
X30.096 C79.532 F700.4
X29.71 C84.957 F724.9
X29.595 C90. F737.
G42 X36.654 Z11.235 F500.
X37.198 Z10.406
X37.595 Z9.557
X37.843 Z8.693
X37.939 Z7.822
X37.884 Z6.95
X37.676 Z6.084
X37.318 Z5.23
X36.813 Z4.395
X36.164 Z3.585
X35.376 Z2.807
X34.456 Z2.066
X33.41 Z1.368
X32.247 Z.718
X30.974 Z.121
X29.602 Z-.418
X28.142 Z-.896
X26.604 Z-1.307
X25. Z-1.651
X21.987 Z-2.181
X18.93 Z-2.642
X15.834 Z-3.034
X12.706 Z-3.356
X9.552 Z-3.607
X6.379 Z-3.786
X3.193 Z-3.894
X0. Z-3.93
C270. F2000.
X3.193 Z-3.894 F500.
X6.379 Z-3.786
X9.552 Z-3.607
X12.706 Z-3.356
X15.834 Z-3.034
X18.93 Z-2.642
X21.987 Z-2.181
X25. Z-1.651
X26.604 Z-1.308
X28.142 Z-.896
X29.603 Z-.419
X30.974 Z.12
X32.247 Z.717
X33.411 Z1.367
X34.457 Z2.066
X35.377 Z2.807
X36.165 Z3.585
X36.813 Z4.395
X37.319 Z5.23
X37.677 Z6.084
X37.884 Z6.95
X37.94 Z7.822
X37.844 Z8.693
X37.596 Z9.557
X37.199 Z10.406
X36.654 Z11.235
G40 X29.595 Z20.592
G0 X202.178 C351.583
G0 Z20.592
G28 U0. V0. W0. H0.
M5 P12
T0400
M30

[Superman]

You seem to be using either the rotary axis ON or using a lathe plane
( could geometry be 90° out of position ? )

What code do you get if WCS=TOP, T/C plane = TOP, & geometry drawn in TOP view ?
like programming for a milling machine,

You should be getting YZ outputs, with X controlling the depths, & C being defined as a positioning axis at the startup only

[kopsik]

Using the TOP plane also gave an error - A valid cut type was not found, check rotary settings.

[kopsik]

My Mastercam rep told that the post processor is the culprit. Seems a bit odd since one of the reason for buying mastercam was the fact that they told they have the right post processor for my machine.

I guess if they can't provide a working post (and I'm stuck with mastercam) I'll have to find someone to customize the post processor.

[rogkick]

They wont edit the post so you have what you paud for?

[dak1]

I don't know mastercam as we use Creo (Pro/E). The Y axis shown in your pic would need be defined as the Z of the sequence coordinate system to generate the toolpath I believe your trying to create. (The +Z of the csys needs to point toward the + direction of the tool axis or toward the spindle).

[BOATDUDEGUY]

My Mastercam rep told that the post processor is the culprit. Seems a bit odd since one of the reason for buying mastercam was the fact that they told they have the right post processor for my machine.

I guess if they can't provide a working post (and I'm stuck with mastercam) I'll have to find someone to customize the post processor.

O they can provide a working post
But its gonna cost ya

[kopsik]

They are trying to edit the post, but it seems that they are having some difficulties and it's taking them forever to do it.

[cadcam]

Have the check with in-house solutions they may all ready have one.