Messages

141

General Mach Discussion / Re: What Steps/ Units Settings for Z-axis (Quill) of CNC Retrofitted Radial Machine?

« on: June 05, 2010, 12:35:53 PM »

Here is the Simulation results and Actual - side by side... The simulator is new to me so i can't color map the depth...

142

General Mach Discussion / Re: What Steps/ Units Settings for Z-axis (Quill) of CNC Retrofitted Radial Machine?

« on: June 05, 2010, 12:26:50 PM »

I am posting here the screen shot of the cncsimulator, the simulation and the actual part machined matches but it is out-of-way or it seems like that.. any suggestion.. I am attaching the gcode file too...

143

General Mach Discussion / Re: What Steps/ Units Settings for Z-axis (Quill) of CNC Retrofitted Radial Machine?

« on: June 05, 2010, 10:06:01 AM »

Hi RICH.. First i am thankful to you for showing us a nice tool you made.. As i have shown you the 45 degree square and the Circle..I have perfect all the things..but today when i tested on Aluminum i found some trouble as you can see in picture..
It is the picture of  a simple 5-vane open impeller just to check the machine behaviour on the Aluminum... As you have seen in the picture, the simulation perfectly shows the same resultss of my Gcode.. I am annoyed only because i am going out of my centre.. As you have seen the picture one of the Vane just at the edge of the stock... All the dimensions are perfect..and this is very strange for me..if the motor looses steps then the Vane thickness and curvature must be different but in this case it is the same thickness.. I stopped the machine when the cutter strike the clamp.. If the part was completed then may be i had some clue why this happen?

The part dmension is 110mm, the stock used was Aluminum 121mm dia.. The pocket was done in 4-passess upto 8mm depth with  7 IPM and 800 RPM using new 8mm 2-flute HSS endMill..
Any thought?

PS:
SHOULD I SAY, THAT THE TOOL IS  GOING OUT OF CENTRE? ... A little confusing to me... Seems that  stock is offset to the Geometry in the CAM software.. But when i saw in the CAM the geometry is centred in the STOCK...... i am confused because thee impeller  machining and dimension is right after removal of the part.. It seems that i have some offset of the complete part in the stock.. Help me i am in a very perplexing situation... Anything in MACH3 that can cause this???

144

General Mach Discussion / Re: What Steps/ Units Settings for Z-axis (Quill) of CNC Retrofitted Radial Machine?

« on: June 05, 2010, 04:38:47 AM »

Forget to write that the SQUARE is actually rotated square (45 degree) so that both X/Y motors collectively make it. So making the square both X/Y motors engaged all the times.

145

General Mach Discussion / Re: What Steps/ Units Settings for Z-axis (Quill) of CNC Retrofitted Radial Machine?

« on: June 05, 2010, 01:39:05 AM »

hi ,

Backlashs for Axes:
1- X-axis: 0.005708 inch  =  0.145mm
Y-axis: 0.013385 inch   =  0.334mm
Z-axis: 0.0535433        =  1.36mm
Backlash speed of max%: 50%
shuttle Acceleration:0.08
Mill : climb mill

Calibrated Step/units(mm) :  calibration was taken at 290mm length with needle gauge and gauge blocks
   X-axes:  6093.32125758 
   Y-axis :  6093.32125758 
  Z-axes:   15177.80388
Kernel Speed: 25000Hz


I am running the steppers in 1/2 step mode.. Do we have any problem with the steps i mentioned above?


Today i checked all the things and they found tight. With the same settings as yesterday, i just plot 100mm Diameter circle and 150mm Square. The backlash for all the Axes was enabled. The circle meets all the points and were found round within 0.01mm. The Square was perfect within the 0.01mm. and the start and end point meets exactly...

This tells me that i have no motors as well as backlash calibrations issues in no-load conditions.

PS:
The circle was drawn first with Lead pencil and i measured it. but when drawing the square the pencil stopped marking. So i install the Pen, this work perfect for Square drawing but torn the page while drawing the circle.

Any thought?

146

General Mach Discussion / Re: What Steps/ Units Settings for Z-axis (Quill) of CNC Retrofitted Radial Machine?

« on: June 04, 2010, 02:36:15 PM »

Hi Phil,
I currently don't remember the backlash values and also didn't  checked the rotation direction of tool.. Will answer you tomorrow:)
Regards

147

General Mach Discussion / Re: What Steps/ Units Settings for Z-axis (Quill) of CNC Retrofitted Radial Machine?

« on: June 04, 2010, 11:31:02 AM »

Guys I am getting trouble...
http://www.cnczone.com/forums/showthread.php?t=106340

148

General Mach Discussion / Re: Arrow Keys Failed to Jog- No problem with Keyboard keys in Other Applications

« on: June 04, 2010, 10:53:34 AM »

Hi Hood:)
After 7-years i learnt some new...and You saved my day... May God keep you and your family Healthy and wealthy..Thanks for your help:)

Regards

149

General Mach Discussion / Re: Arrow Keys Failed to Jog- No problem with Keyboard keys in Other Applications

« on: June 04, 2010, 10:40:57 AM »

Oops.. where i enable the Jog Control?...

Is it the same in Config-->General Configuration--->Persistent Jog Mode???

150

General Mach Discussion / Re: Arrow Keys Failed to Jog- No problem with Keyboard keys in Other Applications

« on: June 04, 2010, 10:27:46 AM »

Hi Hood.. I will definitly look it.. May be i pressed some wrong key during cleaning of my Keyboard when Mach3 was On... Any Hot key that makes the Jog control Off?