Doosan Parameters

[JeremyV]

So, 15 mins ago our Doosan stalled trying to tap a 1-8 thread.  What I didn't know is Doosan is set to tap holes in high gear.  No matter the speed that its set to, it wants to tap in high gear only. 

 

Would anyone know how to change this?  Currently we don't have a threadmill to do a 1-8 hole...

 

-JD

[Guest]

I seem to remember the doosans i worked with only being able to do tapping cycles at a spindle speed of S300 or higher is your spindle less than that?

[Guest]

Are are we talking mill or lathe here?

[JeremyV]

On ‎5‎/‎17‎/‎2019 at 5:39 AM, Peter Evans said:

Are are we talking mill or lathe here?

Mill.  We have tapped less than S300 on both the mill and lathe...  Was tapping at a speed of 42 RPM for the 1-8 tap.

[Guest]

May I see the block of code pertaining to the cycle in question please?

[JeremyV]

1 hour ago, Peter Evans said:

May I see the block of code pertaining to the cycle in question please?

(T22 = 1-8 UNC BLACK SPIRAL TAP )
N15830 (TAP 1"-8 THRU)
N15840 G00 G40 G80 G90 
N15850 T22
N15860 M6 
N15851 M29 S43 
G80
M19
N15870 G00 G54 G90 X-3.4194 Y-4.4194
N15880 G43 H22 Z4. M8 T20 
N15890 G95
N15900 M29 S43 
N15910 G98 G84 Z-1.225 R.2 F.125
N15920 X5.4194
N15930 Y4.4194
N15940 X-3.4194 
N15950 G80 M9
N15960 G94
N15970 G00 G91 G28 Z0.0 M05 
N15980 G00 G91 G28 Y0.0
N15990 M00

There ya go.

[DouglasJRizzo]

Have you tried forcing a gear change before the M29? Say an 'M41?"

[Guest]

If you change your spindle speed to lets say 600 does it still give you alarm? I don't work with those Doosan mills anymore but all I remember is we were tapping metric sizes as small as m4 or m5 and as big as m20 but we always had to run the spindle really high or it would go into alarm, I hope you figure it out!