Messages

11

General Mach Discussion / Tool setting changes Mach3 Turn

« on: October 04, 2017, 02:19:43 PM »

Hi
I have an issue. My cnc lathe has an 8 tool ACT. The tool table is set with tool no 1 as the master.
Normally every thing works perfect when canging tools but; i run the Mach 3 wizzard, save, post the code and run the code. Evrything is ok. Than I go back and do som changes in the wizzard , save, post code and than the tool setting is completly wrong. No toolchange has been done. Same tool in the DRO as well.
Than I restart the PC, set master tool and every thing is ok again.



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12

General Mach Discussion / Re: Threading Wizard

« on: August 27, 2017, 10:01:11 AM »

Hi
I have removed the USB card and put in two parallell port cards. This solved the treading issue but I have some problems with the speed control. I have a Vacon VFD vit 0-10 VDC.e
When I give S1000 the speed is 672 rpm and STrue shows 224
In ports & pins, Spindel Use Spindel Motor Output and PWM Control is ticked.Minimum PWM 0%, PWM Base Freq 5
Spindel pulley is set to ratio 1 max speed 3000.
Any idea what is wrong?

13

General Mach Discussion / Re: Threading Wizard

« on: August 13, 2017, 07:45:42 AM »

Her is a correct file

14

General Mach Discussion / Re: Threading Wizard

« on: August 13, 2017, 03:12:25 AM »

I must also commit that I said I had speed feedback from the pickup. This may not bee correct. S True reads speed but when I use a hand held tachometer the speeds are not the same. It could be that I get feedback from the VSD??

15

General Mach Discussion / Re: Threading Wizard

« on: August 12, 2017, 12:10:53 PM »

Hello Rich
I´m back and here is the file.
This is the reply from the card supplier:
Hello, I'm sorry this card can not be used for treading , you need buy a parallel port card

Is it possible to use two cards one USB and one parallell and connect the index sensor to  the parallell card?
Thanks
Gaute

16

General Mach Discussion / Re: Threading Wizard

« on: July 18, 2017, 02:02:29 AM »

Rich
I´m on vacation and not near the Mach3 PC. I have attached the manual and the wiring diagram. Google drive is with you every where. There was also a MACH3 copy with the card but I did not use it. I have a legal copy. The seller claimed it was a Smooth Stepper card. I´m quite sure that the card does not handle treading and this is the problem.
What if I connect the index sensor direct to the LPT? It´s possible to have several cards in the Mach3.
Thank you for the advices Rich.
Gaute

17

General Mach Discussion / Re: Threading Wizard

« on: July 14, 2017, 11:08:08 AM »

I hav checked the index connection to the card. I have used I2 for the Index and configured Mach3 for this port. When I turn the spindel I get green on the index led every time the sensor passes one of the four open slots in the disk. When I run the spindel the led goes off now and then. The card documentation does not say anything about index.

18

General Mach Discussion / Re: Threading Wizard

« on: July 14, 2017, 09:20:43 AM »

One strange thing is the actual speed DRO show correct speed and I have connected the speed/index pickup to somewhere. I will check this when I'm back home tonight.

19

General Mach Discussion / Re: Threading Wizard

« on: July 14, 2017, 09:04:42 AM »

I belive my problem is the card, that is a cheap china USB card:
https://www.aliexpress.com/item/Factory-outlets-100KHz-CNC-mach3-USB-4-Axis-Stepper-Motor-Driver-Breakout-Board-USBCNC-Smooth-Stepper/32334451366.html?spm=a2g0s.9042311.0.0.Q6q1FJ

Every thing else on the lathe works fine. I'm relative new to CNC som bear with me. I build a CNC router/3D printer and this works perfect after some try and failing

So your putting an M6-1 thread on a 15 diameter stock. No M16-1, just for test purpose. I have a 16 mm stock X start is 16 mm.

? Z10  You realise that normaly one would thread towards the chuck
  so Z-10 and NOT Z10.? Yes it was -10 in the wizzard but I see it is positive.
Note also that the there should be a move
  of 3 to 5 P ( or greater) before the actual start of the threading
  as this give time for the axis to accelerate. You should also check
  the feedrate in the wizard so that chosen feedrate is acceptable. 

? H.3 I would suggest a smaller first pass depth it is 0.3 mm

? C.025 Why so small? I don't know?

? B.0001  Practicaly speaking, doubt that your lathe accomplish that.
          B is optional.... I don't know

Are you using a SmoothStepper? It would control the threading. No I'm using this:https://www.aliexpress.com/item/Factory-outlets-100KHz-CNC-mach3-USB-4-Axis-Stepper-Motor-Driver-Breakout-Board-USBCNC-Smooth-Stepper/32334451366.html?spm=a2g0s.9042311.0.0.Q6q1FJ and I think this is the problem. I do not find any index connection

? M03 S300 You need to set spindle speed manualy and based on the index
           pulse signal.See the Threading Write up. Yes I just read it and learned a lot. Now I understand what the codes means.

If Mach3 sees no index pulse there will be no threading ie; changing from G94 to G95. Note that threading will not start
until the index debounce is satisfied ( needs to see so manny index pulses before it accepts the signal). This is properbly the problem.

I have a standard brakout card that I can connect to the computer LPT port, can I use this in addition to the USB (of cause it must handle index) or should I just buy a USB smooth stepper card?

It's a lot to learn and this is the purpose of my project. I do not have any particular use for the CNC late other than finding out how it works.

20

General Mach Discussion / Re: Threading Wizard

« on: July 14, 2017, 12:41:12 AM »

I will check the index configuration. The index plate should be correct as I made it according to the Mach3 Turn manual. Yes I have a paid licence.
Thanlks for the advice Rich.