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Messages - michel-cnc

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1
G-Code, CAD, and CAM discussions / Milling alloy
« on: March 09, 2012, 01:21:48 PM »
Hello,

I have some difficulties to mill alloy because it seems that alloy is much more crushed or forged than cut.
I use a mill tool diameter=3.17mm; Speed 6000 RPM & F50; depth=0.8mm (0.5 for finish pass).
So, machine chips are not cut and after few time of milling stops the spindle (too much efforts - 700w spindle);
as the machine continue to move, the tool can break.
The machine has also a lot of vibrations and the tool makes a lot of noise.
I join a picture of the (bad) result.

Did you have experienced the same thing ?
May be i will be more inspired to try an other material; what is the kind of white material i can see sometimes - is it nylon ?
What do you use as synthetic material ?

Thank you for reading !

2
G-Code, CAD, and CAM discussions / Milling the table
« on: February 19, 2012, 07:17:10 AM »
Hello !
My CNC table is made of 3 aluminium profiles (size 30*150*1000mm). I put them together and make them as rigid as possible with a large piece of aluminium behind.
Despite this, i have measured a height difference between the 3 profiles in the X-Axis direction (0.5mm).
I think that milling the table is the best solution.
Is it a common way to get X-Y moves parallelism with the table ?
Do you have some other ideas ?

Thank you.

3
G-Code, CAD, and CAM discussions / Re: Setting of edge finder diameter
« on: February 19, 2012, 07:05:48 AM »
Some news, i have found the problem and i think i am a little bit stupid !
The reason is the keyboard was not in "numerical lock" !
I have several computers and i usually have the numerical keypad lock for others, so i don't look at the keypad lock led.
It is really stupid.

4
G-Code, CAD, and CAM discussions / Re: Setting of edge finder diameter
« on: February 19, 2012, 03:15:57 AM »
Adendum: for S and Tool settings it is the same, i can't enter a value directly in the window (when i click in the window the background color changes but i can't enter figures).
I must use "M6 T1" and S8000 in the MDI window to set these parameters (and the corresponding windows are updated).
With the "edge finder diameter" i have not found an MDI command....

5
G-Code, CAD, and CAM discussions / Setting of edge finder diameter
« on: February 18, 2012, 05:53:14 AM »
Hello,
I have the R3.043.022 of Mach3. I don't know how to set edge finder diameter (offsets index).
If i click in the window i can't enter a value. I have not seen a way to specify this in the configuration.

Thank you for your help !
Michel

6
G-Code, CAD, and CAM discussions / Re: A question on Z axis direction
« on: February 18, 2012, 05:49:08 AM »
Thank you Gerry.

7
G-Code, CAD, and CAM discussions / A question on Z axis direction
« on: February 15, 2012, 02:04:33 PM »
Hello !
I have finished with the mechanical part of my CNC; i have read the Mach3 documentation.
I have a question about the Z-axis (there is a joined file to explain the problem).

thank you !
ML

8
General Mach Discussion / Re: False Estop detection
« on: December 31, 2011, 04:21:23 AM »
I had to improve this solution in time, but it seems to be solved.

9
General Mach Discussion / Re: False Estop detection
« on: December 30, 2011, 12:19:32 PM »
Thank you Ray, the problem was coming from 400Hz, i have to shielded also the spindle output & put a filter on the input VAC of the spindle driver.

10
General Mach Discussion / False Estop detection
« on: December 29, 2011, 01:01:14 PM »
Hello !
I am building a CNC; i experience some problem with inputs signals (ES, limit switch): Mach3 "seen" some bad signals among those inputs.
For example, The input voltage is 4.9v just behind the parallel port of the PC for ES signal & detection is set active to low. Mach3 seen an "emergency
stop request" even if resetted. All input signals on the CNC are shielded. I have found that it is the power block for the spindle that put some trouble (400Hz).
If i do not plug it, there is no more problem with Mach3.
I have also seen that the PC wired together the ground (sector) and the 0V on the parallel port - do you think it's normal ?
Do you think that the power spindle block can produces interferences via the ground & the 0v ?
May be, i need to use a filter on the 220V input of the power spindle block ?
What do you think of that, do you have encountered the same problem ?

Thanks & happy new year !!!

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