Re: [CAD_CAM_EDM_DRO] How Would You Design question

Just a few thoughts about the wood itself. Whether your looking for three or
four inch wide strips, you're going to want extra wood on your block, or be
willing to settle for not getting a complete blocks worth of strips cut from it.
Then you clamp the wood, you introduce stress flex up to as much as an inch away
from the clamp. That means that one side will be true, while the other side
will have a tendency to waver when the clamp is removed, or the strips cut off
the block. I'm assuming here that you want to cut the strips, and then cut them
all off the remainder of the block in one pass, yes?

Bill

On Wed Apr 24 09:56:35 2002, Tim Goldstein, <timg@...> wrote:

>Been thinking about creating a specific purpose CNC machine and thought it
>would be help to see how some of you would attack the problem. The question
>revolves complete around the mechanical design of the equipment and does not
>at all consider the electrical or software from the motors to the computer.
>
>Here are the design parameters:
>1) The machine will be single purpose to cut sheets of wood off of blocks
>with a maximum dimension of 3" x 4" x 37"
>2) The resulting sheets need to be consistent in thickness over the lenght
>of the sheet + - .0025
>3) The thinnest sheets cut will be .050" and the thickest will be .200"
>4) The cutting motion travel will need to be in the speed range of 20 - 60
>ipm with a rapid backfeed in the 200+ ipm range.
>5) The actual cutting equipment will be a high end table saw with very good
>bearings so that the spindle rigidity, run out, etc do not need to be part
>of the design discussion
>6) The designed mechinism has to fit on and be compatable with a high
>quality table saw
>7) The mechanical portion of the design (not including motors, the base saw,
>electronics, or software) should be able to be constructed for about $500
>8) Specifying expensive components that are commonly able to be found in the
>surplus market to meet the cost goal of #7 is acceptable.
>
>I think that pretty well lays out the general requirements I am trying to
>meet. Look forward to the various ideas that everyone may have on how to
>accomplish this. I have some ideas in mind and it will be interesting to see
>if they are consistent with the group consenses.
>
>Tim
>[Denver, CO]
>http://www.KTMarketing.com/CNC.html
>
>
>Addresses:
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>
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>
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>
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