Path: csiph.com!feeder.erje.net!2.eu.feeder.erje.net!newsreader4.netcologne.de!news.netcologne.de!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: "Hilo Black" Newsgroups: alt.folklore.computers Subject: Re: DEC and The Americans Date: Mon, 8 Feb 2016 03:49:48 +1100 Lines: 45 Message-ID: References: <4df0bfe0-763c-4abb-a3fd-c53c22099c24@googlegroups.com> <9aadncmcsLboNC7LnZ2dnUU7-TudnZ2d@giganews.com> Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset="UTF-8"; reply-type=original Content-Transfer-Encoding: 8bit X-Trace: individual.net g+MDRx7XlEoCBg1GhNQwwAUzf9wPXfu3ny6OHOKFrqklvej3k= Cancel-Lock: sha1:AhFChCCw6c7uxfv36FNHOy6QvQs= In-Reply-To: X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Newsreader: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 Xref: csiph.com alt.folklore.computers:159001 "jmfbahciv" wrote in message news:PM00052B2F8FA0063E@aca2d604.ipt.aol.com... > Stephen Sprunk wrote: >> On 06-Feb-16 08:35, jmfbahciv wrote: >>> Stephen Sprunk wrote: >>>> On 05-Feb-16 08:41, jmfbahciv wrote: >>>>> What's special about multi-axis machine tools? Note that I think >>>>> I don't have any knowledge about machine tools. >>>> >>>> It doesn't help much to restrict the sale of munitions if you don't >>>> also restrict the tools/parts used to make those munitions. ... >>> >>> OK, I'm not getting my question answered. I think I need to learn >>> about machine tools. Where would I look (in real books) for that? >> >> WP has a couple of references that look relevant: >> https://en.wikipedia.org/wiki/Multiaxis_machining >> >> The short version is that you need multi-axis machining to make parts >> with complex curves, e.g. submarine propellers or turbine blades, at a >> level of precision required for high-performance military designs. >> >> As noted in another reply, the Soviets could _design_ submarines (and >> also fighters) that could match ours, but they lacked the tools needed >> to actually manufacture them. > > I don't understand why they didn't design the machine tools. Turns out that they are very difficult to design to get a good result. MUCH harder than with a 3 axis tool which is very simple indeed. > The first step in making a dam is to build a concrete manufacturing > plant. I would think that part of the project plan for a design would > include the tools required to manufacture the design. That's how > we planned our projects. In fact its more complex than that. DEC didn’t in fact completely automate the production of the flip chip modules first, or even completely automate the wire wrapping of the backplanes first either. Same with core memory, the manufacture of those was not done completely with tools that were designed first, driven by DEC computers either. Neither did IBM go that route either.