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Messages - burgs

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General Mach Discussion / Re: Bug in Mach 3 or Bug in Me?
« on: May 31, 2006, 10:02:01 AM »
Hi Markr
Not sure but whats the G91.1 in line N3, might be a typo! Also G90 and G91 should not be on the same line. Also have you enterd a DXX to tell the control what dia the tool is? Have not checked your co- ordinates.
Best regards

Tangent Corner / Re: Who I am...
« on: May 26, 2006, 04:50:37 AM »
Its great ;D to hear there are people like you exist in this world today.
It seems everytime we need to upgrade something in our workshop it is always out of reach because of cost.
For instance we have been looking at retro fitting a vertical lathe to CNC (1941 vintage) for a specific a job but normal avenues were out of reach $ wise ???. After researching and reading the different topics in the forum we have decided to go ahead and purchase the license for Mach 3 and convert.
Good luck, don't burn out, my respect and good wishes to all the team.
Best Regards

General Mach Discussion / Re: Determining Servo Motor sizes
« on: April 24, 2006, 05:03:56 AM »
Thanks Brian
Another step forward.
Between the web site you gave and the servos on our Mazak I should be able to work it out. I have down loaded the specs on 1 to 3kW drives and motors which by the toque graphs should be in the range I am looking for. The prices look ok as well. Transport costs may be high though to Aus.
Best Regards
PS what did you use the drives on and how are they working?
Just found these guys are in Qld. Australia.

General Mach Discussion / Re: Determining Servo Motor sizes
« on: April 23, 2006, 05:33:36 PM »
Webster & Bennet verticle lathe.
36" chuck
 2 axis X, Z
25 hp  max motor speed 1420rev/min
max spindle speed 125rev/min
I intend fitting speed control to the motor.
I thought someone may have done a simple spread sheet for servos.
Also does Mach 3 have G96 for motor speed control (constant surface speed)??
Best Regards

General Mach Discussion / Determining Servo Motor sizes
« on: April 23, 2006, 02:17:31 AM »
Anyone out there know of any easy way of determining servo motor size reguired for a machine with out doing the maths.
I have been looking at similar new machines to mine and checking what servos they have. But if they don,t give the lead on the ball screws
Bets Regards

General Mach Discussion / Verticle borer/lathe retrofit
« on: April 19, 2006, 05:31:29 AM »
We are looking turning a manual vertical borer/lathe over to CNC control The machine has a 36" chuck 42" max turn diameter, only 2 axis and the spindle to control. Spindle speed is slow 5 to 115 rev/min.
The question is whether Mach3 would be OK?
Looking at the forum comments and adds for Mach3 it would appear that it would be ok so long as the hard ware between the computer and the servos is man enough for the job.
We have a Mazak slant bed lathe with 6T Fanuc controller which is a mass of wires and boards but is 20 odd years old, mind you very solid, very reliable. We also have a Haas VF3 and the electrical control side is 1/3 the size (20 years of tech change).
We have down loaded Mach3 to look at and it will do what we want, mainly normal turning raidius threading.
The cost of a new machine or to get this machine upgraded/retrofitted the normal way is out of the question for us.
Best Regards

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