Re: [CAD_CAM_EDM_DRO] Digest Number 2750

Hi Sven

Thanks for the test report. These tests carry a lot of weight.

Ray

On Monday 02 December 2002 11:42 am, you wrote:
> Message: 2
>    Date: Sun, 01 Dec 2002 19:03:18 -0000
>    From: "Sven Peter" <peteryco@...>
> Subject: Re: replacing feed screw with a hydraulic cylinder
>
> Hello Friends,
> I had in mind to change my hydraulic copy lathe to CNC. But everybody
> I consulted said: Better not because its way it becomes more expensive
> than servomotors and damn inacurate.
> I didnt believe until I made a test with a clients proportional servo
> valves.
> Now I second the warning:
> Too inacurate!  
> Too Slow!
> Pretty expensive!
> Oscilation (0.02mm on radius!!!!)!
> Trouble with dirt!
>
> The day I may convert my lathe You can be sure I will kick out the
> pistons for ball screws and servos.
> Good luck
> Sven Peter