RE: [CAD_CAM_EDM_DRO] Re: Optical mouse for DRO anyone?

We built a copper / brass strap cutting machine sort of similar, partly
based on the remains of an old broken one.

Because some of the brass strap is quite thick and hard we couldn't use
friction to measure it, in stead we grab it with a pneumatic clamp, and use
another air ram to pull the length.

The pulling ram pulls until it hits a stop, this stop sets the length and is
mounted on a big ball screw with big stepper motor so it's CNC adjustable.

There is also a second clamp to hold the shim strap while the pull mechanism
retracts in case two pulls are needed for longer straps. There's also a
rubber coated roller sprag clutch where the shim is fed in so it won't slip
back.

The holding clamps use pistons about an inch diameter.

The cutter shear uses a piston about 4 inch diameter, the blade is slanted
at about 15 to 20 degrees and it will cut straps up to 6 inch wide, 60 tho
thick I think in copper, not sure how thick in brass.

The whole machine is on a slant so when the strip is cropped it slips down
into the collection bin.

The purpose of the machine is to cut straps to make up multi leaved
conductive hinges for electric welding robots in the car industry. The
straps all have to be consecutively shorter so they line up when bent around
in a curve. Don't use a PC to control it, but a small Omron PLC we set the
start length, offset, or stop length, no of straps and away it goes.

At least that's it from memory, has been running for several years but will
give you some piston sizes which are probably a lot oversized.



I also have a cropper for cropping the packaging on surface mount electronic
component tapes. It uses a 1.5 inch ish piston and 30 degree slat blade,
though the damn things regularly jam, so we don't use it.



Regs Mark



Dr. Mark Vaughan Ph'D. B.Eng. M0VAU

Managing Director

Vaughan Industries Ltd, reg in UK no 2561068

Water Care Technology Ltd, reg in UK no 4129351

Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
Phone/Fax 44 1872 561288

RSGB DRM111(Cornwall)

_____

From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of ballendo
Sent: 22 April 2007 06:23
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Optical mouse for DRO anyone?



Hello,

Dan Mauch built a similar machine many years back. It's listed at
his website. I've always found the idea intriguing; but the lack of
a proper cutter has been the "sicking" point in my case.

I'd be interested in hearing seeing details of how you--and Dan or
any others who havc made a wire whacker!-- handeld this part of the
machine.

Solenoid size, cutter blade details, etc. Please<G>

Thank you in advance,

Ballendo

--- In CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com, Ron Kline <ronkline@...>
wrote:

>
> CL
> I don't know if you want to get this complicated but I built an
> interesting machine several years ago that should do what you are
> looking for very easly.
> It is a CNC wire cutter that easly cut stainless steel wire +-

.002" ,

> just tell it the lenght you want and how many and it spits them

out and

> cuts them to length .
> It is sort of a 1 axis CNC I used a stepper motor with a rubber

roller

> slid over the shaft and another spring loaded rubber roller above

to

> pinch the wire , as the stepper turns it feeds out the desired

length

> and stops then the G code program activates a large solenoid that

is

> attached to a cutter blade that shears off the piece , the program
> repeats this as many times as you need . I used it to cut 15,000

of one

> piece and 4,000 of another which more than paid for the machine

and I

> have used it several times sense for smaller jobs.
> If someone is interested contact me off list and I can send some
> pictures , and answer questions .
>
> --
> Ron Kline
>
> American Precision Ceramics .. (Industrial ceramics)
> Central Ky.
>
>
>
> mrclicit wrote:
> >
> > 1. How to read a mouse is straightforward:
> > http://www.computer <http://www.computer-engineering.org/ps2protocol/>

-engineering.org/ps2protocol/

> > <http://www.computer <http://www.computer-engineering.org/ps2protocol/>

-engineering.org/ps2protocol/>

> >
> > 2. I need to measure cordage in lengths from 1 to 100 ft with
> > precision of a couple of inches at 100 ft.
> >
> > If you check around, there is no readily available, simple tool

to do

> > this. There are the simple counters used by hardware stores and

Home

> > Depot Electrical Dept's everywhere, but none of these work with
> > something similar to a shoe lace or any kind of rope like cord

3/8" in

> > diameter or less....I know the exiting tools don't work because

I've

> > tried them all (or almost all...)
> >
> > CL
> >
> >
>

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