th the advent of rapid prototyping
machines it is now possible for eMachineShop CAD
software to output directly to a rapid prototyping
machine. Importantly, eMachineShop keeps the run
costs low since rapid prototyping does not require
tooling; short production runs can be made at
lower cost and faster turnaround. This approach
also provides higher confidence when committing
to conventional tooling. Rapid prototyping helps
engineers, designers and end users check designs
for usability, appearance and manufacturability.
Rapid prototype machines help to speed up the
new product design cycle.
Back
nes, and big machines are expensive. Few shops
can afford to pay hundreds of thousands of dollars
just to machine a few flats on a workpiece, or
drill and tap some holes.
But what if you can split the problem in two
pieces? Why not separate the machining requirements
from the workpiece handling and holding requirements,
and then apply--and integrate--mechanisms that
are appropriate to their specific tasks?
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That's really the philosophy behind the extremely
efficient transfer systems that have been applied
for decades in the automotive and other high-volume
industries. For a simple operation, move the part
to a machining station designed for the task,
execute the operation, and move on. The good news
for those machining on a smaller scale is that
technology now exists that can apply the same
low cost machine parts concept at a much lower
cost, yet at a much higher degree of flexibility.
It's primarily a matter of combining the inherent
versatility of a simple, low-cost machining center
with a workpiece handling system designed for
the task at hand.
Here's how the concept plays out at one manufacturer.
ection apparatus are operated by a team of trained
specialists to produce superior quality machining
parts that fulfill the market demanding requirements.
If you have projects for custom machined part,
please feel free to contact us. After taking a
close review, our representative will reply you
soon. low cost machine parts
With this family of parts, the machining is easy;
it is the variety of parts that presents the problem,
particularly as they get bigger. The largest flange
is 63 inches in diameter and weighs some 2500
lbs. It would be a relatively simple matter to
process all the parts on a standard horizontal
machining center with a rotary table, but a machine
large enough to handle all the parts would cost
upwards of $300,000, a staggering investment just
to drill and tap holes.
So until last year, TDW continued to manufacture
these large parts in the manner they had employed
since the 1960s. They used a manual engine lathe
rigged essentially as a horizontal drill press.
Workpieces were set up on a rotating table mounted
on the lathe's carriage, and cutting tools were
loaded individually into the spindle. Then the
workpiece was manually fed into the spindle to
execute all operations.
It took two men to crank the feed; they broke
quite a few tools; and quality was, well, less
than optimal. Still, with the process requirements
dictated by the size of the workpieces, it seemed
the most cost-effective option.
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