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Forum: 10. Base Table Thu 08 April 2010, 22:09
Replies: 84
Views: 104,109
Posted By KenC
This build is going to be very complex &...

This build is going to be very complex & demanding with no promises. There are too many alignment for a structure IMHO...
1) hole location,
2) linear slide line & plane alignment. & there are so...
Forum: 10. Base Table Thu 08 April 2010, 20:46
Replies: 84
Views: 104,109
Posted By KenC
Its been a long while since I last did any FEA,...

Its been a long while since I last did any FEA, there are many free software out in the net, have a look at here (http://www.freebyte.com/cad/fea.htm)
I am not recommanding any particular software...
Forum: 10. Base Table Wed 07 April 2010, 21:09
Replies: 84
Views: 104,109
Posted By KenC
I'm no guru, giving advice or guidence way over...

I'm no guru, giving advice or guidence way over stated., discuss is more appropriate.
I mention the simulation because at the first glance, your latest structural rigidity bothers me & I could be...
Forum: 10. Base Table Wed 07 April 2010, 20:25
Replies: 84
Views: 104,109
Posted By KenC
If you could run a finite element analysis on...

If you could run a finite element analysis on your structure to check for deflection under load.
Forum: 10. Base Table Sat 03 April 2010, 20:09
Replies: 84
Views: 104,109
Posted By KenC
You looked too far outside of the box ;) ...

You looked too far outside of the box ;)

Look closer at 1020456 & 1020251.
Extend 1020456 by 1' while keeping the mounting hole location relative to the rail as original.
Make 1020251 larger but...
Forum: 10. Base Table Sat 03 April 2010, 02:15
Replies: 84
Views: 104,109
Posted By KenC
Not exactly, but he focus on achieving his need &...

Not exactly, but he focus on achieving his need & he wasn't greedy for a multi purpose machine. He did it real simple & I like his modification a lot.

My brain storming question for you is. ...
Forum: 10. Base Table Sat 03 April 2010, 00:50
Replies: 84
Views: 104,109
Posted By KenC
Not disputing your choice but this is too complex...

Not disputing your choice but this is too complex to achieve a simple goal.

Why not just make the gantry bracket a feet taller & make the Z-slide long enough to drill for oil. that should meet...
Forum: 10. Base Table Fri 02 April 2010, 03:28
Replies: 84
Views: 104,109
Posted By KenC
AAAAAHHHHHH! That a good approach too. Or...

AAAAAHHHHHH!
That a good approach too.
Or just make the gantry wheels move up/down?
Forum: 10. Base Table Fri 02 April 2010, 02:25
Replies: 84
Views: 104,109
Posted By KenC
Philosophy again... My idea for the lift is...

Philosophy again...

My idea for the lift is to move the bed to a close proximity of the latching position. Then latch & lock at precise location, using tapered shaft/ dovel pin or what ever that...
Forum: 10. Base Table Thu 01 April 2010, 23:34
Replies: 84
Views: 104,109
Posted By KenC
David, I'm impressed by your job! As...

David,
I'm impressed by your job!

As engineers, it is our obligation to eliminate as many "things" that won't or very difficult to implement from reaching the paper. ;)

You can always try to...
Forum: 10. Base Table Thu 01 April 2010, 22:00
Replies: 84
Views: 104,109
Posted By KenC
Dave, On paper, running 4 screws to move thing...

Dave,
On paper, running 4 screws to move thing in unison is perfect, but my ex-day jobs told me it isn't as simple as they seem. A simple illustration is 2 man 3 leg contest. A single point push or...
Forum: 10. Base Table Thu 01 April 2010, 21:35
Replies: 84
Views: 104,109
Posted By KenC
No matter which choice of lifting mechanism, you...

No matter which choice of lifting mechanism, you still need fix holes + pin/bolt to locate the bed position before lock/latching the bed.
Dave,
The design is getting more complicated then...
Forum: 10. Base Table Thu 01 April 2010, 21:24
Replies: 84
Views: 104,109
Posted By KenC
Dave, Now that you have a rigid bed, the screw...

Dave,
Now that you have a rigid bed, the screw won't work, I'll go with jim's idea on using jack for the job, even easier construction. I would suggest a scissor lift for the job....
Forum: 10. Base Table Thu 01 April 2010, 00:43
Replies: 84
Views: 104,109
Posted By KenC
9146

9146
Forum: 10. Base Table Wed 31 March 2010, 19:13
Replies: 84
Views: 104,109
Posted By KenC
60" is a long span for your material choice....

60" is a long span for your material choice. since there are unused void under the board, Should you consider the bed a lattice space frame made out of think wall square hollow section or pipes & you...
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