Re: [CAD_CAM_EDM_DRO] Re: Knee for z-axis control?

Hi David,

I'm using ballscrews on all 3 axes. I first considered using an
electrically operated (to release) brake on the servo motor shaft but
others suggested that the gas springs might be suitable - so I tried
that first with good results.

Cheers, Peter

volitan712003 wrote:

>--- In CAD_CAM_EDM_DRO@yahoogroups.com, Peter Renolds <prenolds@s...>
>wrote:
>
>
>>Guys,
>>
>>All of these ideas may be viable but they seem to be overly
>>
>>
>complicating
>
>
>>things... I think KISS really applies here. I've had ove two years
>>
>>
>of
>
>
>>trouble free operation of my servo based system and all I use are
>>
>>
>two
>
>
>>$20 175lb gas spring from McMaster Carr one on each side of the
>>
>>
>knee.
>
>
>>I've had two 70lb kurt vices on the table and even with power off,
>>
>>
>the
>
>
>>knee has not moved! Mind you I would never work under the knee
>>
>>
>without
>
>
>>sliding a wooden block to 100% support the dead weight. Just do it.
>>
>>
>..
>
>
>>Happy cnc'ing the knee.
>>
>>Cheers, Peter
>>
>>
>>
>>
>>
>
>
>I've seen your pictures. Are you using a ballscrew for Z, or the
>original ACME screw?
>
>David
>
>
>
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