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Messages - mikeyz3385

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FAQs / Re: Homing my lathe, please help
« on: September 16, 2009, 08:00:38 PM »
sorry for the delay, i have the newest version of mach 3 its like version x.x? im not really sure but i just purchased the license for the program also. Im not too clear on what you mean by the xml of my lathe but i do have their website on it if that helps you at all. Also if the machine is not homed out will that cause the z axis to constantly stop about .100 thousands short on every pass of a turn cycle? It almost looks as if i was making a taper on the part. Here is that link http://www.mini-lathe.com/Mini_lathe/Reviews/Homier_7x12/Homier_7x12_p1.htm

The program i have written is to turn a piece of stock from 1 inch to 7/8 using a series of passes at .010 per cut. I can write it out manual by writing every x and z move but at only .010 per pass , that is alot of lines. I checked in the manual and found their g-codes but i couldnt seem to get them to work as well. Even when i used the wizard to turn an OD down it would post the program telling every step written out using no canned cycle.

 ive recently converted my mini lathe to a cnc using  a stepper motor kit from stepperworld.com . My main software is mach 3. Im used to programming with fanuc controls at my work and i wrote a simple turning canned cycle and mach 3 wont read it at all. Now i have used the wizards but they really dont seem to work that great as i thought. I would be able to do everything so much easier with the programming im used to. Anything i can do? Here is a sample program if that helps anyone,

G96 S500 M03 (TURN)
G0 X1.0 Z.5
G71 U.010 R.02
G71 P300 Q400 U.008 W.005 F8.0
N300 G0 X0
G1 Z-.375
N400 X1.01
G70 P300 Q400 F6.0 (FINISH CUT)
G0 X1.5 Z2.0

FAQs / Re: Homing my lathe, please help
« on: September 10, 2009, 08:24:12 PM »
  your math worked out perfectly for me but sadly the x axis and z axis still moves when i try to home the machine.

FAQs / Re: Homing my lathe, please help
« on: September 08, 2009, 08:23:50 PM »
Thank you rich, it sounds like it should work although i wont be able to find out till thursday, tomorrow im taking a day trip to atlantic city  ;D . I have another question maybe you can answer and i understand it has nothing to do with homing my machine but you seem to know everything i throw at you so ill ask you this also. I have my nema 23 motors hooked up to my fet/3 dynamic driver from stepperworld.  (note im still in the process of setting everything up) I hooked up a dial indicator and used a command line to move the x axis like .020 . the dial indicator shows it moved like .003 . Now i know i need to tune the motors to my specs and i need to change that "steps per" number according to my calculations for the lead screw and whatnot. My problem is the math. I feel like the number needs to be between like 8000 and like 12000 but im not really sure if that seems right. I looked at all the formulas on the manual and i keep messing up the answer for it. Perhaps you can help? or is that uncharted territory? Let me know cause i can write back with the numbers but if its too much trouble dont worry about it

FAQs / Re: Homing my lathe, please help
« on: September 08, 2009, 03:49:29 PM »
correct, I am trying to home it without having switches. I saw in that link on how to use the soft limits and such but as soon as i hit set x home it desides to start moving and wont stop.

FAQs / Re: Homing my lathe, please help
« on: September 07, 2009, 10:58:19 PM »
Here is my new problem. I watched the link you gave me on homing my machine, i jog both x and z , zero x and zero z in parts corr. I then click on machine corr and click set x home and set z home. For some reason my x starts moving and won't stop. It won't let me home it out. Anyone have this problem?

FAQs / Re: Homing my lathe, please help
« on: August 24, 2009, 06:22:31 PM »
Rich i cant thank you enough. I was pulling my hair out trying to find a way to home it and to jog. Thank you very much. Is it possible to jog with the nuimber pad on the keyboard? (like 4 and 6 is +z -z and 8 and 2 is +x -x)

FAQs / Homing my lathe, please help
« on: August 23, 2009, 09:31:57 PM »
 I am a beginner with all this so sorry for basic questions. I just finished hooking up my stepper motors to my lathe along with installing mach 3. The kit i bought with the steppers showed me how to set up the pins and ports on mach 3 with my setup. My question is how do i home my machine out? I have no limit switchs so i would imagine i need like a soft limit or something but i really dont know where to even start. Another question would be how do i jog using mach 3, i dont have and controllers.


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