Messages

91

General Mach Discussion / Re: New/old DIY CNC upgrade?

« on: June 29, 2023, 05:14:15 PM »

To get PWM you connect to pin 1 and GND then set pulley speed 1  from 0 to 100 then calling S50 M3 will give you 50% power.

Its a while since I did this so maybe one of the others can put more light on this.

92

General Mach Discussion / Re: stepper motors changing directions-Please help

« on: June 29, 2023, 04:46:57 PM »

It could be noise on the step and direction cables or a bad ground or are you using a pirate licence

93

General Mach Discussion / Re: Lathe ATC turret VB

« on: June 29, 2023, 04:38:22 PM »

Lathes do NOT use T1 M6 they use T0101

94

Post Processors / Re: Encoder in Mach4 for Tapping

« on: June 12, 2023, 03:41:26 PM »

The threading is controlled by the motion controller Mach4 just sends it a threading command and it sorts out the detail.

95

Tangent Corner / Re: Swing grinder setup information

« on: June 02, 2023, 08:00:21 PM »

Hi Russ,

thanks for the input, I have read the lathes.co.uk site.

This evening I trammed the spindle square to the table over a 10" diameter swing and got .0005" (0.01mm) TIR.  I then dressed the wheel and replaced the mag table and ground a 2" billet in .0005" cuts.  The finish is not what I expected it looks stepped and it rocks when placed on the surface table.

I think I need to take a closer look at the mag table.

96

Tangent Corner / Swing grinder setup information

« on: May 31, 2023, 11:56:42 AM »

I inherited an Excel 8" swing grinder in bits I have put it back together and all looks good the spindle runs sweet but I am not happy with the way it grinds.  I dressed the wheel and it has not made any difference.

The spindle head had been removed and when I replaced it I trammed it square to the table like a mill.

My concern is this:-

There was no manual with it or one to be found on line so I am not sure if the head should be square to the table or at a slight angle to stop back cutting.

Has anybody any experience of these type of machine?.

The picture is the machine in question.

Thanks for any help.
Graham

97

Mach4 General Discussion / Re: Ref all home

« on: May 12, 2023, 07:32:56 PM »

Wow that got us told!

98

Mach4 Plugins / Re: Persistent value 163 after homed axis A

« on: May 12, 2023, 12:24:21 PM »

Do you have an absolute encoder fitted to the axis?

What is the machine DRO value of the axis?

Do you have any values in the fixture offsets for that axis?

Is there a homing offset set for the axis?

99

General Mach Discussion / Re: Gearchange support Mach 3

« on: May 09, 2023, 06:40:24 PM »

The same way linuxcnc is doing it, the hardware is key, all that Mach3 will do is turn something on and off with M code macro.

Find out the details of the linux version and then report back with the details.

100

Mach3 and G-Rex / Re: Inexplicable loss of X & Z axis.

« on: May 09, 2023, 06:35:55 PM »

No licence file