[AT] tractor hauler a pain to install headlights.

Dennis Johnson moscowengnr at outlook.com
Wed Jan 15 19:40:13 PST 2020


Steve,

You might be right for autos. My experience was Paccar (KW, Pete, etc), International, CAT, used ProE. Schlumberger and Boeing also used ProE. Things may have changed the last few years.

Dennis


Sent from my iPad

On Jan 15, 2020, at 1:27 PM, Stephen Offiler <soffiler at gmail.com> wrote:


To the best of my knowledge, Catia and Unigraphics NX both outpace Pro/E in the automotive industry.

SO


On Wed, Jan 15, 2020 at 2:13 PM Dennis Johnson <moscowengnr at outlook.com<mailto:moscowengnr at outlook.com>> wrote:
Most larger automotive companies and engine companies use ProE cad programs.
Cad programs do not cause clearance or maintenance issues. These programs just allow the operator to make poor designs quicker than old days with tee squares.

Dennis


Sent from my iPhone

On Jan 15, 2020, at 12:15 PM, Stephen Offiler <soffiler at gmail.com<mailto:soffiler at gmail.com>> wrote:


Interesting comments on screen sizes James.  I've got a dual monitor setup, 27" in front of me and 21" just to the right.  When doing CAD work, it's mostly done on the main screen, with the smaller one containing notes, word processor, internet browser, calculator, useful tools along those lines.  But to comment on scale:  A practical problem I run into is with small parts.  It is a basic functionality of CAD to zoom, pan, and rotate the part or assembly on screen.  You can take a tiny part and fill the screen with it and lose appreciation for scale very quickly.

SO


On Wed, Jan 15, 2020 at 12:32 PM James Peck <jamesgpeck at hotmail.com<mailto:jamesgpeck at hotmail.com>> wrote:
When vehicles were designed on the board, they drew in 1/2 scale. You could look at a drawing and relate it to reality. If you taped a drawing to a wall, you could get a sense of the vehicle size.  If a designer had a full size or 1/2 size CAD screen, those inaccessible places would be much more noticeable. People doing 3D solid modelling sometimes have multiple screens, one for each view. It would be difficult to design anything on a smart phone screen. It is not much easier on a small monitor. Monitors do continually get larger, just like TV screens.

Some years ago I read some issues of a then DaimlerChrysler employee newsletter. One article covered a group that real world verified that all maintenance operations could be performed on a new model. If the maintenance could not be performed, the group would have to design a specialized tool or get a tool manufacturer to design the tool and offer it for sale.

They did all this after the vehicle had been designed and production was imminent. I am guessing that moving heaven and earth would be easier than getting the product design changed.

Toyota which emphasizes production efficiency not product design may not do it any differently.

Cecil Bearden AT List member, Oklahoma farmer, and Professional Engineer (crbearden at copper.net<mailto:crbearden at copper.net>); <snap> This is the problem of designing with AutoCAD and those other computer drafting programs. The designer has no idea of the clearance in the finished product. <snip>
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