CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] spindle counterweights

Posted by Jon Elson
on 2001-09-17 01:21:48 UTC
jag@... wrote:

> Hello,
>
> I have a CNC machine that I have retrofitted to a more modern
> control.
> It is a bed mill with a 42"x20" bed and a 5 HP spindle motor.
> It was previously only capable of 2 axis simultaneous motion. It
> had a dec pdp control. We have are now running a windows
> based control with a galil servo card.
>
> Anyway, there is a counterbalance on the spindle that consists of
> a chain that goes up and over the top of the machine (via some
> pulleys) to some weights that hang on the back of the machine.
> We experience some problems when there are rapid
> accelerations away from the bed and it also tends to overshoot
> when moving toward the bed. It will sometimes gouge when it is
> move down and has to stop rapidly.

The obvious alternative is either gas springs, air cylinders, or something
of that sort.

Jon

Discussion Thread

jag@g... 2001-09-16 11:10:29 UTC spindle counterweights Sven Peter 2001-09-16 14:06:02 UTC Re: [CAD_CAM_EDM_DRO] spindle counterweights Doug Harrison 2001-09-16 14:54:51 UTC Re: [CAD_CAM_EDM_DRO] spindle counterweights Doug Fortune 2001-09-16 15:50:11 UTC Re: [CAD_CAM_EDM_DRO] spindle counterweights Smoke 2001-09-16 19:47:17 UTC Re: [CAD_CAM_EDM_DRO] spindle counterweights Wally Daniels 2001-09-16 22:36:16 UTC Re: [CAD_CAM_EDM_DRO] spindle counterweights rslemon@l... 2001-09-16 22:53:49 UTC Re: spindle counterweights jag@g... 2001-09-16 23:58:08 UTC Re: spindle counterweights Jon Elson 2001-09-17 01:21:48 UTC Re: [CAD_CAM_EDM_DRO] spindle counterweights rslemon@l... 2001-09-17 03:25:40 UTC Re: spindle counterweights machines@n... 2001-09-17 04:04:28 UTC Re: spindle counterweights Tim 2001-09-17 13:25:03 UTC RE: [CAD_CAM_EDM_DRO] Re: spindle counterweights Smoke 2001-09-17 16:22:56 UTC Re: [CAD_CAM_EDM_DRO] Re: spindle counterweights shymu@b... 2001-09-17 23:36:10 UTC Re: spindle counterweights Doug Harrison 2001-09-17 23:49:16 UTC Re: [CAD_CAM_EDM_DRO] Re: spindle counterweights jag@g... 2001-09-19 05:39:53 UTC Re: spindle counterweights