Hello Guest it is June 18, 2019, 11:59:11 PM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - remartinez

Pages: 1 2 3 »
General Mach Discussion / Re: Threading on lathe issues
« on: May 09, 2015, 06:45:19 PM »

Thanks Rich.

Hey Raul did you make any progress?  Coincidentally I had a little threading job to do in aluminum yesterday that came out great.  Even at 300 rpm in direct drive (too lazy to switch to 4:1 belt reduction) everything stayed in sync.

Couple things I changed, dunno if it was part of my problem.  I checked "Spindle speed averaging" in the spindle tab and set my debounce to 2.  The rpm DRO was WAY more stable after that.  I ran the thread several times with good results.

I don't know if the spindle rpm is read by Mach (when threading) via the rpm DRO or directly off the index pulse input but my setup appears to work better now.  May have been the alignment of the stars & planets...or maybe the tinfoil hat I wore yesterday. ;D

Oh almost forgot, I generated the code in Dolphin which shouldn't have made any difference but was easier (for me) than the Simple Threading Wizard.  I also chose 14 roughing and 4 finish passes.  In retrospect I should have doubled the roughing passes to reduce the load a bit as the last few roughing cuts were peeling off a healthy sized chip (for my little lathe.)  It all came out OK so I'm a happy camper today.  We'll see how things go down the road when I have to do "real" threads in steel.

Sorry guys for not responding to the post. Work has swallowed me in entirely and just spit me out. I got around to playing around with my lathe again. One of the problems I had was that the axis rapid was moving to slow so I made the adjustment there.

The problem that I am still having is that once the rpm reading goes out of whack for a split second, the threading stops working. I have played around with the debounce but I have had no success. I am using the C3 card from CNC4PC.

Does anyone have any idea how I can fix this issue?


General Mach Discussion / Re: Threading on lathe issues
« on: March 06, 2015, 06:48:42 PM »
Have a read of Threading On The Lathe which can be found in Members Docs.

May need to set your rpm manualy as that can interfere with the threading cycle.
Not sure about version .066 infulence,as i have not used it, and others have gone back to earlier version
due to problems with it.
Make sure you have 3- 5X pitch of movement before actual threading to allow for axis acceleration

I'll let others reply about .066 who have tried or used it.


I have spent the pass 6 hours messing around with this issue and I have had no success. Let me explain the things that I have done.

First: I uninstalled and installed Mach3 version 0.57 (as per Dicky)

Second: I checked to see if a Z axis is accurate and it is (including with backlash).

Third: I went to manual speed on the VFD.

Fourth: I increased the slot on the disk to 5mm

I have tried the scribing test and sometimes its accurate and other times its not.
Sometimes I notice that the true RPM readout goes out of whack for a split second. Maybe this can be an issue but haven't figured out how to fix it.
The couple of times that I noticed that it was cutting accurate I let it complete the full thread. After measuring the pitch on the thread it was off by about 0.01 inch. Spindle speed was accurate. it might of lost 1 -2 rpm at most.

Extremely frustrated. Any ideas on what else to try?


General Mach Discussion / Re: Threading on lathe issues
« on: March 02, 2015, 07:20:30 AM »
Thank you for your response. I will re-install the older version of Mach3 and do some testing over the next couple of days and I'll get back to you with my results.

Thanks again,

General Mach Discussion / Re: Threading on lathe issues
« on: March 01, 2015, 03:20:17 PM »
Thank you for your response. I have read the thread and manual but still can figure it out.
What version of Mach 3 works for threading?

General Mach Discussion / Threading on lathe issues
« on: March 01, 2015, 02:05:51 PM »
Hi guys, Need help!

Been searching on the forum for  a couple of weeks on threading on the lathe to solve my issue but I have had no success. My issue is that the timing on threads are off on each pass. Question is how do I correct this issue. My thinking is that Mach 3 is not picking up the timing correctly.

C35 board,
C3 board for indexing. board set on active high with Mach3 also set on active high for the pin.
100 mm disc with one 3mm slot
VFD (Teco N3) controlled by a C6 board.

Mach 3 version: R3.043.066

RPM reading on Mach 3 is correct. (meaning that rpm might be off by 1-2 rpm at most)
Debounce set at 0

X and Z axis movement and backlash are perfect.

Any advice will be helpful.
Thank you,
Raul M


General Mach Discussion / Incorrect spindle RPM
« on: November 29, 2014, 01:12:19 PM »
Hi guys,
I have been searching for a couple of days thru the forum to try to figure out my issue but I have been unsuccessful.
The issue that I am having is that I can not get the appropriate RPM to match Mach3.
Hardware: G0704 mill, C35 BOB, C6 Speed control.
Motor timing: motor pulley 32 tooth, spindle pulley 40 tooth
Mach3 pulley setting: min 100, max 4350 ratio 0.8
Motor tuning: 1000 steps, Max velocity, Step pulse 3
Spindle setup: I have checked Step/Dir motor

I can set the max rpm correctly to 4350. If I set Mach3 to 3000 rpm my tach reads 2800. At 2000 rpm the tach reads 1600. At 1000 rpm the tach reads 650.

Any advice will be greatly appreciated.

Thank you,

SmoothStepper USB / Re: USB SmoothStepper went bad
« on: October 09, 2014, 09:59:17 AM »
Jeff, I did measure the pin but I was not getting any voltage out of it. I checked to see if I was getting voltage from the usb cable and I got a reading of 5v.
So I added an external 5v power source to the SmoothStepper board and changed the setting on the jumper and bingo, the charge pump started working.
Im guessing that when the board went haywire it must have damaged one of the components to route the power from the usb port.

Jeff, thank you and I really appreciate your time and your help. 

Raul Martinez

SmoothStepper USB / Re: USB SmoothStepper went bad
« on: October 07, 2014, 02:01:50 PM »
Jeff, thank you for your response.

So I went and changed all of the port numbers to port 2 and changed the SmoothStepper pins to outputs but no luck on getting the charge pump to activate.
So decided to to start from scratch. I created a new profile and punched in all of the settings by hand. Still with no success.

If I change the jumper on the SCHP on the BOB then I can get the SmoothStepper to work. This evening I'm going to try and add external power to the SmoothStepper
to see if I can get voltage on the output pin for the charge pump.

Is there any other suggestion that anyone can think of for me to try?

Thanks you,
Raul Martinez

SmoothStepper USB / USB SmoothStepper went bad
« on: October 06, 2014, 04:39:30 PM »
Hi guys, need a little help!

This morning I was working on my mill and all of the sudden my machine went haywire. I quit mach3 but machine continued going crazy. I had to disconnect the usb cable that went to the smooth stepper for it stop. I went trough a process of restarting the computer and mach3 but i could not get mach3 to work with the smooth stepper. I uninstalled and reinstalled the drivers and plugin for the smooth stepper but the only portion that I can see that is working is on the inputs. I can not get the smooth stepper to activate the outputs on the BOB(C35). I disconnected the smooth stepper from the BOB and connected with parallel port and everything works fine.

I checked the voltage on pin 17 of the smooth stepper but I can't read anything higher than 4 mv. LED lights on the smooth stepper are correct.

Question: Is there a way that this board  could have gone bad?
              Is there a way that I can use port 2 to connect to the C35 BOB?

Thank you,
Raul Martinez

I have a Pokeys 56U connected to an M2 motherboard, attached is the M31 matrix keyboard from cnc4pc. I have not been able to get it to work. I am running the latest Mach3 software and the latest pokeys plugin.
I pokeys plugin I enabled the matrix keyboard settings and assigned the pins to the corresponding rows and columns. Then in the pokeys mapping I assign the matrix keyboard to press a button.
I have not been able to get this to work. Is there something that I am doing wrong? Can someone please give me a hand.


Pages: 1 2 3 »