MadModder
The Breakroom => The Water Cooler => Topic started by: Bernd on July 05, 2010, 09:45:13 PM
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Take a look at this pre-historic CNC.
BC: Before CNC at NACA/NASA (http://www.cnccookbook.com/index.htm).
Thanks Bob.
Bernd
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Take a look at this pre-historic CNC.
BC: Before CNC at NACA/NASA (http://www.cnccookbook.com/index.htm).
Hell's bells. One of my main jobs from 1968-1975 was cutting and filing (2D and 3D) tracer templates for hydraulic tracer mills. I learned hydraulics rebuilding tracer valves! The oldest one I worked on had a 1934 date cast into it.
EIA RS-427 is the command structure for G-code programming. It came out of the chaos of our (American) response to Sputnik. I built a DNC milling machine in 1968 from the bones of a Gorton 9J vertical milling machine using a 4-bit microcomputer (RTL discrete component processor) and (3/4 HP) stepper motors! I believe (but cannot prove one way or the other) that it was the first DNC milling machine west of the Mississippi not in a government lab or prime contractor's facility.
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A lot of parts got made on tracer mills and tracer lathes, not to mention screw machines, which are another mechanical CNC "cousin".
I just had never seen a 4th axis rig cutting compound curves like those impellers and thought those were cool pix.
There was a period there when the machinist was held in very high respect. You can tell from the photographs. I still hold them in high respect, but you don't see that so often anymore. It's a shame because it takes tremendous smarts to do it really well.
Cheers,
BW