Hello Guest it is November 18, 2019, 03:22:39 AM

Author Topic: Thread Mill Wizard - Slanted thread produced  (Read 2446 times)

0 Members and 1 Guest are viewing this topic.

Thread Mill Wizard - Slanted thread produced
« on: August 02, 2012, 06:08:05 PM »
Hello, every time I try to use the thread Mill Wizard for a ball nut the thread produced is sharp and a great fit but it is always slanted. Pictures and g-code below, I am beginning to think it maybe my MACH setup as I have seen many do this. I did check to ensure the TAIG mill is square

A visual of what I am trying to do is here. http://www.youtube.com/watch?v=Suwl_HzouVU&feature=player_embedded

Any help would be appreciated. . Thx.

---------Thread Milling G-Code---------------------------------
G0 G49 G40 G17 G80 G50 G90
M6 T0 (TOOL DIA. 0.65)
G20 (Inch)
M03 S0
G64
G00 G43 H0 Z0.1
(Right hand ID Conv)
X-0.3075 Y0.37375
G00 G42 P0.325 X0.06625 F10
G00 Z0.0313
G02 X0.44 Y0 R0.37375
G02 X-0.44 Y0 R0.44 Z0
G02 X0.44 Y0 R0.44 Z-0.0313
G02 X-0.44 Y0 R0.44 Z-0.0625
G02 X0.44 Y0 R0.44 Z-0.0938
G02 X-0.44 Y0 R0.44 Z-0.125
G02 X0.44 Y0 R0.44 Z-0.1563
G02 X-0.44 Y0 R0.44 Z-0.1875
G02 X0.44 Y0 R0.44 Z-0.2188
G02 X-0.44 Y0 R0.44 Z-0.25
G02 X0.44 Y0 R0.44 Z-0.2813
G02 X-0.44 Y0 R0.44 Z-0.3125
G02 X0.44 Y0 R0.44 Z-0.3438
G02 X-0.44 Y0 R0.44 Z-0.375
G02 X0.44 Y0 R0.44 Z-0.4063
G02 X-0.44 Y0 R0.44 Z-0.4375
G02 X0.44 Y0 R0.44 Z-0.4688
G02 X-0.44 Y0 R0.44 Z-0.5
G02 X0.44 Y0 R0.44 Z-0.5313
G02 X-0.44 Y0 R0.44 Z-0.5625
G02 X0.44 Y0 R0.44 Z-0.5938
G02 X-0.44 Y0 R0.44 Z-0.625
G02 X0.44 Y0 R0.44 Z-0.6563
G02 X-0.44 Y0 R0.44 Z-0.6875
G02 X0.44 Y0 R0.44 Z-0.7188
G02 X-0.44 Y0 R0.44 Z-0.75
G02 X0.44 Y0 R0.44 Z-0.7813
G02 X-0.44 Y0 R0.44 Z-0.8125
G02 X0.44 Y0 R0.44 Z-0.8438
G02 X-0.44 Y0 R0.44 Z-0.875
G02 X0.44 Y0 R0.44 Z-0.9063
G02 X-0.44 Y0 R0.44 Z-0.9375
G02 X0.44 Y0 R0.44 Z-0.9688
G02 X-0.44 Y0 R0.44 Z-1
G02 X0.44 Y0 R0.44 Z-1.0313
G02 X-0.44 Y0 R0.44 Z-1.0625
G02 X0.44 Y0 R0.44 Z-1.0938
G02 X-0.44 Y0 R0.44 Z-1.125
G02 X0.44 Y0 R0.44 Z-1.1563
G02 X-0.44 Y0 R0.44 Z-1.1875
G02 X0.44 Y0 R0.44 Z-1.2188
G02 X-0.44 Y0 R0.44 Z-1.25
G02 X0.44 Y0 R0.44 Z-1.2813
G02 X-0.44 Y0 R0.44 Z-1.3125
G02 X0.44 Y0 R0.44 Z-1.3438
G02 X-0.44 Y0 R0.44 Z-1.375
G02 X0.44 Y0 R0.44 Z-1.4063
G02 X-0.44 Y0 R0.44 Z-1.4375
G02 X0.44 Y0 R0.44 Z-1.4688
G02 X-0.44 Y0 R0.44 Z-1.5
G02 X0.44 Y0 R0.44 Z-1.5313
G02 X-0.44 Y0 R0.44 Z-1.5625
G02 X0.44 Y0 R0.44 Z-1.5938
G02 X-0.44 Y0 R0.44 Z-1.625
G02 X0.44 Y0 R0.44 Z-1.6563
G02 X-0.44 Y0 R0.44 Z-1.6875
G02 X0.44 Y0 R0.44 Z-1.7188
G02 X-0.44 Y0 R0.44 Z-1.75
G02 X0.44 Y0 R0.44 Z-1.7813
G02 X-0.44 Y0 R0.44 Z-1.8125
G02 X0.44 Y0 R0.44 Z-1.8438
G02 X-0.44 Y0 R0.44 Z-1.875
G02 X0.44 Y0 R0.44 Z-1.9063
G02 X-0.44 Y0 R0.44 Z-1.9375
G02 X0.44 Y0 R0.44 Z-1.9688
G02 X0.06625 Y-0.37375 R0.37375
G00 G40 X0
G00 Z0.1
M5 M9
M30

Offline Hood

*
  •  25,856 25,856
  • Carnoustie, Scotland
    • View Profile
Re: Thread Mill Wizard - Slanted thread produced
« Reply #1 on: August 03, 2012, 02:55:25 AM »
Code looks good so only things I can think of is Z out of square, or an axis losing steps.
Hood
Re: Thread Mill Wizard - Slanted thread produced
« Reply #2 on: August 07, 2012, 10:59:37 PM »
Hello, I have done this at least 20 times with the same result and I have never heard missing steps. I have used 1-2-3 blocks to check if the mill head is square.

Is there anything I can check from a z-axis motor tuning perspective?

Offline Tweakie.CNC

*
  • *
  •  8,002 8,002
  • Super Kitty
    • View Profile
    • Tweakie.CNC
Re: Thread Mill Wizard - Slanted thread produced
« Reply #3 on: August 08, 2012, 02:01:40 AM »
Hi NGR,

Just out or curiosity, Is the 'out of square' always in the same direction ??

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline Hood

*
  •  25,856 25,856
  • Carnoustie, Scotland
    • View Profile
Re: Thread Mill Wizard - Slanted thread produced
« Reply #4 on: August 08, 2012, 02:50:04 AM »
If you have home switches do a verify after running the code to see if things are ok.
Hood

Offline Hal

*
  •  60 60
    • View Profile
Re: Thread Mill Wizard - Slanted thread produced
« Reply #5 on: August 08, 2012, 08:44:12 PM »
You made the cutter from a tap. Did you leave too much of the flute? Normal thread mills there is no helix on the cutters.