Topics

51

General Mach Discussion / Xendoll micro machines

« on: December 15, 2016, 02:15:23 AM »

Hello Chaps
Has anyone got machines from this company in China??
I like there small lathes-- and would like some feedback about quality etc??

regards
Fred

52

General Mach Discussion / third axis for lathe

« on: November 04, 2016, 03:05:59 PM »

About a year ago i posted a request for info on setting up a 3rd axis on a lathe
the purpose is for operating the tailstock screw for things like drilling or positioning
a running centre.

Anyone got any new ideas ? or maybe a screen

regards
fred

53

General Mach Discussion / error codes??

« on: October 02, 2016, 07:50:37 AM »

Is there a list of Mach3 error codes around ?
regards

fred

54

General Mach Discussion / speed setting with setup string

« on: October 01, 2016, 11:30:09 AM »

Hello Chaps
 in "general config" there is a field that is called initialization string

If I add S1000 to this setup string does that mean that when I activate
or toggle the "spindle" button that the spindle motor should turn at
the speed of 1000 rpm??
thanks
fred

55

General Mach Discussion / off topic- but maybe someone can help

« on: October 01, 2016, 03:13:46 AM »

Hello Chaps,

Inverter setup problem

Sorry to post off topic- but it is saturday here and commercial outlets are all closed

I have a lathe running mach3 and the speed is being controlled by an omron MX2 multi function inverter.
I cannot figure out how this inverter works because i am not an electronics fundi.

The problem is that when i switch mach3 on and toggle "spindle on" the chuck turns very slowly
( about 50 rpm) and when I run a wizard the speed does'nt translate to the motor correctly.

I suspect that there is a parameter within the controller that is not set correctly.

My initialization string ( under general config ) call for S1500 and the "motor config" is set for max 1500
min 300 .

Am I correct in assuming that without any code loaded if i toggle" spindle on" then the motor should run at
1500rpm ?

I have an "eye" which reads the spindle speed correctly but the "S" dro does not show the correct spindle
speed.

Help will be appreciated

Fred Evans

56

General Mach Discussion / 3rd axsx on lathe

« on: May 15, 2016, 12:33:46 PM »

Hello chaps--
I asked the question before but cant find the thread ( sorry )
I am using mach 3 on a small bench lathe and would like to set the tailstock
as the 3rd axis ( for drilling, centering and other odds and ends).

Please point me to the instructions for doing this.

I am using the standard simple screen that is the default-- and maybe now is the time
to upgrade - all suggestions and hints  gratefully recieved

regards

fred

57

General Mach Discussion / CSS - in meteres or milimeters

« on: April 26, 2016, 08:58:00 AM »

Hello Chaps-
Mach 3 on lather
I have units set as metric.

Setting CSS via gcode is G96 S?

Is the S word in metres or in mm?

My product cuts nicely at 900 rpm on a diameter of 100 mm
Is the following logic correct
100mm X PI= 314.16 mm per rev.
900 rpm will mean 314.16 X 900 = 282744 mm per minute
= 282.744  metres per minute
the block will read G96 S282.7   ??

Next thing is feed per rev that was set by G95 respected??
 
Thanks in advance

Fred

58

General Mach Discussion / wizard setting incorrect default for g94

« on: April 15, 2016, 10:07:20 AM »

Hello All
I am using the wizards and they work well but for some reason it is always setting the
feed at g94.
I prefer g95-
how can i get the wizaed always to use g95 instead of g94?

regards

fred

59

General Mach Discussion / is this stepper big enough?

« on: April 10, 2016, 08:17:12 AM »

Hello Chaps --
I am not in the least accomplished in electronics and electrical stuff

Firstly -I have heard that steppers have there most torque when running very slowly?
Is this correct.
Therfore am i right to assume that a direct connected drive will be the most powerful way of
connecting the stepper to the leadscrew??

I am attaching a picture of a stepper motor ( no names or labels on it ) and a picture of
my benck milldrill. Can anyone tell me if the stepper shown will be OK for connecting to the
mill drill shown by a direct drive onto a 5mm pitch ball screw?
the drive will be powering the left to right feed and the front to back feed
Would it be better to use a toothed belt and gear the motor speed down ? small pulley on
motor bigger pulley on lead screw??
All comments will be appreciated
And many thanks
Fred Evans

60

General Mach Discussion / please point me to " setting up 3 axis "on a lathe

« on: December 12, 2015, 03:10:08 AM »

Hi everyone-- I know this question has been asked but for life of me i cant\
find a keyword to search for.
I have added a third axix on my lathe( works the tail stock)
Please point me to somewhere where i can find out how to set it up in mach3??
Many thanks

fred evans