- Dec 2, 2003--- In firstname.lastname@example.org, "kimvellore" <kim@b...> wrote:
>To build an injection mold for a well detaled product you
>...none of the lathe and end mills can get to the level of
> detail that casting or injection molding gets.
need to use mill and lathe. The trick is knowing how to design
and make the necessary tooling. To design something in 3D is
the least expensive part of the process. To convert the program
to a working product requires many expensive steps. On the basic
three or four axis CNC machine you need to figure out the correct
holding of the already machined surfaces (special tools made
strictly for the product), a more sophisticated shape requires
many tool changes, and even the production of a simple gear
requires a "fifth" axis. To make the proper tooling is the
biggest cost factor. Requires the "know how", what is rarely
"public domain". I wish we'll see CNC machines capable to make
the necessary tooling prior production of the parts, using the
product's design and machining information. Then position the
necessary cutters into the automatic tool changers, set-up
the part holders, insert the material and go...
Anyway, if someone with a small CNC machine is interested to
manufacture small numbers (few hundred?) of parts, I have a
nice, long wish list.
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