Re: Electric Wire Cutter

On Sat, 16 Aug 2008 09:38:47 -0700, "RST Engineering \(jw\)"
<jim@xxxxxxxxxxxxxxxxxx> wrote:


o Advance wire between rubber pinch rollers pinched from a printer,

And an identical scrap printer for each student from semester to semester
for five years?

o Drive rollers with a stepper motor to produce desired length,
o scissors-style cutter made of two HSS lathe bits, pivoted
at one end, open at the other.
o Perhaps a groove in the HSS bits to guide the wire.

That wouldn't scar the wire? I guess you could put a radius at each
corner/edge.


o Can drive the cutter with a "jack" screw type arrangement,
motorized, on the open end. Strong, simple, and slow enough
for safety.

drive cutter with a simple cam arrangement, more reliable.

And the motor that drives the cam is gonna have to be pretty big to have
enough torque to slice the wire, especially anything heavier than #20.

But keep on giving me ideas ... the more the merrier.

Jim


There is as always the spring wound trip latch mechanism. Small motor
winds up the spring slowly, trip latch releases stored energy to cut
wire.

.

Relevant Pages

  • Re: Electric Wire Cutter
    ... And an identical scrap printer for each student from semester to semester ... Perhaps a groove in the HSS bits to guide the wire. ... drive cutter with a simple cam arrangement, ...
    (sci.electronics.design)
  • Re: Electric Wire Cutter
    ... And an identical scrap printer for each student from semester to semester ... o scissors-style cutter made of two HSS lathe bits, ... Perhaps a groove in the HSS bits to guide the wire. ... enough torque to slice the wire, ...
    (sci.electronics.design)