First Post - G'Day !

[strud]

Hi all

Have finally begun in earnest my NC Lathe conversion.

The lathe is a typical Chinese unit with approx 1m bed and 300mm swing.

I have the following parts for the conversion :

Delta 400W servo and amp for X axis (cross slide)
Delta 750W servo and amp for Z axis (long)
Kollmorgen 4kW servo and amplifier for Spindle (will be able to run in position mode)
Also intend to run a spindle on the toolpost for milling and radial drilling.

Will be running 2 x MPG's to make it easy to use like a manual lathe when required.

I intend to run MACH3 and am currently am trying to decide upon my breakout/isolation board arrangement. Suggestions ?


My main motivation for this conversion is the need to turn odd shapes and perform radial drilling & milling for my Amatuer rocketry work.

CS

[wildgrav]

http://www.cnc4pc.com/Store/osc/prod...roducts_id=182 Add a smooth stepper to this and you'll be solid. I have three systems like this and I just left the last on for week and it would go any time you touched it.

Noel

[strud]

I'm not interested in steppers for this project, already have very capable servo's ie expect to get 250mm/s with 2um resolution (at the encoder) on the Z axis and 125mm/s and 1um resolution (at encoder) on the X axis.
The real issue I have is the limited step rate available out of the parallel port using MACH3. I can reduce resolution at the amplifier so that one step equates to a larger number of encoder pulses, which is the only way for me to achieve these high speeds (as far as I can see).

[wildgrav]

http://www.geckodrive.com/ Gecko sell servo drives thatwill work

[strud]

I have a pair of these :

http://www.delta.com.tw/product/em/m...2&cid=1&itid=4

which take step and direction no problem.