Re: Guides

being practical,

I recomend you considder the space and leave space for timing gears
and belt.

on the other hand, once you tighten up the chain, you will notice
very fast wear. belts and chains streatch very fast in the first few
hours. that is just the parts seating or stretching for the first
time. but after the break-in period you will notice much longer
times between adjustments.

I would caution against automatic chain adjustemnts as each
adjustment would require a rechecking of backlash and table moving
distance. for distance, think about a pin at each end of the table
and at each end of the bed. over all the way to one end and align
the pins, then move all the way to the other end and align the pins.
see how far you actually moved vs. how far you think you moved. set
correections in software accordingly.

Logic has it that if you are doing production, your wear will be fast
but if you are doing home stuff, it will last long. on the jobshop
side, put $2.00 an hour away for the 'up-grade' fund. don't mark it
down, actually get an account and put it away.

Dave

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "alex" <telecomt@t...> wrote:
> I new some people wont be happy with unconventional approach.
> However once you tighten up the turnbuckle, all the clearances
disappear,
> no matter if it was bought in Canadian Tire for $1 or
from "Military Depot"
> for $1000. Just want to add that as a support rollers I'm planning
to use
> casters from Home Depot, shaft support - aluminum pillow blocks from
> Canadian Tire, chain, sprockets - Princess Auto for a few $$ a
piece,
> base - 3/4 plywood. No lead screws - will be replaced by 2
synchronized
> chains.
> Best regards, Alex
>
> ----- Original Message -----
> From: David A. Frantz <wizard@e...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Wednesday, May 14, 2003 10:06 AM
> Subject: Re: [CAD_CAM_EDM_DRO] Re: Guides
>
>
> > Hi Alex;
> >
> > Turn buckle or not chains have a whole host of problems
associated with
> > them. I'd at least consider some sort of timing belt.
> >
> >
> > alex wrote:
> >
> > >This is where I use a laundry rope turnbuckle to tighten it up!
> > >Alex
> > >----- Original Message -----
> > >From: <JanRwl@A...>
> > >To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > >Sent: Tuesday, May 13, 2003 11:40 PM
> > >Subject: Re: [CAD_CAM_EDM_DRO] Re: Guides
> > >
> > >
> > >
> > >
> > >>In a message dated 5/13/2003 5:04:18 PM Central Standard Time,
> > >>telecomt@t... writes:
> > >>
> > >>
> > >>
> > >>>I think I will be able to make it quite rigid with chain
approach, and
> > >>>hopefully within budget
> > >>>
> > >>>
> > >>Oh, I would expect so, too! But the sprocket-chain will
effectively
> > >>
> > >>
> > >STRETCH
> > >
> > >
> > >>(pins wear!) after very, very little use! Frustrating!
> > >>
> > >>
> > >>[Non-text portions of this message have been removed]
> > >>
> > >>
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> > >
> > >OFF Topic POSTS: General Machining
> > >If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to
reach it if
> you have trouble.
> > >http://www.metalworking.com/news_servers.html
> > >
> > >http://groups.yahoo.com/group/jobshophomeshop I consider this
to be a
> sister site to the CCED group, as many of the same members are
there, for OT
> subjects, that are not allowed on the CCED list.
> > >
> > >NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY
POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > >bill
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http://docs.yahoo.com/info/terms/
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> timg@k...
> > Moderator: pentam@c... indigo_red@q... [Moderators]
> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to
reach it if
> you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this
to be a
> sister site to the CCED group, as many of the same members are
there, for OT
> subjects, that are not allowed on the CCED list.
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY
POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > bill
> > List Mom
> > List Owner
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> >
> >
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http://docs.yahoo.com/info/terms/
> >
> >