New Millscott project

[royce]

More scribbles
The locking of the swivels is proving to be tricky, but the final design is progressing.

 

[PugetDude]

You;ll get it, Royce.
Are you thinking detents, shot pins. or locking cams?

 

[royce]

You;ll get it, Royce.
Are you thinking detents, shot pins. or locking cams?

Thanks Puget,
I'm thinking cams or toggle clamps

 

[royce]

Got the column offsets laid out, ready to cut.
Telescoping strut for adjusting elevation, up next.

 

[WoodsTruck]

I'm picturing this thing having some weight in it when done. Not sure why I have that hunch.

Too bad you can't integrate a spring at least at the lower swivel to counteract the weight. I think a worm gear at each pivot would be kind of interesting so it could be "screwed" into position then locked down.

 

[royce]

I'm picturing this thing having some weight in it when done. Not sure why I have that hunch.

Too bad you can't integrate a spring at least at the lower swivel to counteract the weight. I think a worm gear at each pivot would be kind of interesting so it could be "screwed" into position then locked down.

Yes, fairly heavy.
The telescoping strut will be sprung to counteract the weight.

 

[PugetDude]

Overkill at it's finest. I love it!

 

[royce]

Laid out the strut today, came to the conclusion that the spring really should be progressive and I have no way to measure or calculate it.
So then, opted to use a screw with spring assist.

 

[Garage Junkie]

It would be really cool to use a foot pedal to release the holding mechanism, so that you could raise and lower the vise with your hands.

I wouldn't be too hard on yourself in "designing a spring mechanism"- you can start with too much spring and let the spring always return the stand to a certain position, such as all the way up. Then push it down to where you want it for the job you are doing.

You can always swap out springs with different rates until you get the stiffness you need. Or, you can also adjust force on a spring using what you designed above to pre-load the spring. You just need enough spring length to do everything you want to do.

Could use and air bag or an air cylinder instead of a spring and a foot pedal air valve to raise and lower, or perhaps find an old barber's chair lift mechanism might be neat....

Just some thoughts, awesome project you have going on here!

 

[royce]

It would be really cool to use a foot pedal to release the holding mechanism, so that you could raise and lower the vise with your hands.

I wouldn't be too hard on yourself in "designing a spring mechanism"- you can start with too much spring and let the spring always return the stand to a certain position, such as all the way up. Then push it down to where you want it for the job you are doing.

You can always swap out springs with different rates until you get the stiffness you need. Or, you can also adjust force on a spring using what you designed above to pre-load the spring. You just need enough spring length to do everything you want to do.

Could use and air bag or an air cylinder instead of a spring and a foot pedal air valve to raise and lower, or perhaps find an old barber's chair lift mechanism might be neat....

Just some thoughts, awesome project you have going on here!

Simple, fast acting and balanced was the design goal.
If I can get it sprung right, the screw could be omitted.

Lots of ways to skin a cat
Thank you

 

[RivennHewn]

I think I’d go Bluetooth, with a phone app to control duel motors for the positioning .

 

[WoodsTruck]

CNC vise?

Useless in a power out situation.

 

[royce]

I think I’d go Bluetooth, with a phone app to control duel motors for the positioning .

Hey Riv, you remember when a telephone was just a phone!!!

 

[PugetDude]

Hey Riv, you remember when a telephone was just a phone!!!

That was before he got “ woke”.

 

[RivennHewn]

That was before he got “ woke”.

I’m so “Woke” , my cell phone has pronouns

 

[royce]

Made some templates and laid out the 3"x8" tube members.
Ready to cut in the morning

 

[PugetDude]

Looks like you have a limitless supply of used heavy gauge steel plate, bar, and tubing up there, Royce.

Wish I still had my old drafting machine, would greatly improve my CAD skills.

 

[royce]

Looks like you have a limitless supply of used heavy gauge steel plate, bar, and tubing up there, Royce.

Wish I still had my old drafting machine, would greatly improve my CAD skills.

Puget,
I used to have a large stock of materials but the "bone pile" has dwindled down to mostly junk.
The drafting machine is a fine asset, really shortens drawing time.

 

[Monza Harry]

Puget,
I used to have a large stock of materials but the "bone pile" has dwindled down to mostly junk.
The drafting machine is a fine asset, really shortens drawing time.

And pretty's up the drawing, I wish I had one, my square and triangles will have to do for now. Harry

 

[PugetDude]

I paid the bills with a drafting machine for a couple of years in the early 1980's; detailing tanks and pressure vessels; got off the drawing board and took an estimating postion before CAD came along.

 

[royce]

Arm and base members cut and the base welded out.
The faceted ends have an interesting effect, positive in my eye.

 

[PugetDude]

Royce, your weldments are never boring. Always a nice design twist.

 

[royce]

Cheeks and ears sawn,
Edges eased,
Laid out for boring

 

[royce]

Bored the lower ears today.
Used a rotary table, which was a new procedure for me.
Went well and the bearings fit nicely

 

[PugetDude]

Royce, did you run a jig borer in a previous life?

 

[royce]

Royce, did you run a jig borer in a previous life?

Puget,
Not hardly, I can barely spell it!
Kevin keeps me on the straight and narrow, as best he can, from across the continent!

 

[Bears Fan]

How did I miss this thread? great execution! what an amazing design

 

[royce]

Thanks Bears,
Had a shakey start today, bored the first cheek to 1-1/4", needed to be 1"
Welded a plug in and rebored it and it's sisters.
I'll turn the pins tomorrow.

 

[PugetDude]

When I first started my career in the fab business, an old guy told me
"Everyone makes mistakes, experience teaches you how to recover from them"
Nice save.

 

[royce]

When I first started ny career in the fab business, an old guy told me
"Everyone makes mistakes, experience teaches you how to recover from them"
Nice save.

Puget,
If you you or anybody needs help screwing anything up, I'm your man, lots of experience in that arena!

 

[KMScott]

Nice fix Royce. I agree with Puget. Shucks, you only made a couple mistakes, I am jealous since I remember how many mistakes I made starting out. Keep up the good work.

 

[royce]

Nice fix Royce. I agree with Puget. Shucks, you only made a couple mistakes, I am jealous since I remember how many mistakes I made starting out. Keep up the good work.

Thanks Kevin,
An easy fix, tempers the irritation!!!

 

[RoninB4]

Wow, good thing I've never made a scrap part..........


You recovered, it'll be good.

 

[royce]

Cut the lower hinge pins and end stops today.
That completes the lower pivot.
Now to start on the main hub

 

[Lwel9226]

When I first started my career in the fab business, an old guy told me
"Everyone makes mistakes, experience teaches you how to recover from them"
Nice save.

Only two people don't make mistakes.... One is not doing anything.... the other is a liar....

Lynn

 

[PugetDude]

Unfortunately, there are a lot of people who are so afraid to make a mistake they will never make a decision.
I worked with a few of them during the course of my career, ended up replacing or reassigning most of them.
I called it paralysis by analysis...

Sorry for the post hijack, Royce... it's clear you're not afraid to try new things and think out of the box. I mean, who drags home a 5-ton jig borer that never ran one before?

 

[royce]

Only two people don't make mistakes.... One is not doing anything.... the other is a liar....

Lynn

Lynn, an old friend of mine tells me he made a mistake one time, when he bought a pencil with an eraser.

 

[royce]

Unfortunately, there are a lot of people who are so afraid to make a mistake they will never make a decision.
I worked with a few of them during the course of my career, ended up replacing or reassigning most of them.
I called it paralysis by analysis...

Sorry for the post hijack, Royce... it's clear you're not afraid to try new things and think out of the box. I mean, who drags home a 5-ton jig borer that never ran one before?

Puget I don't mind at all.

I say, if you don't hang it out there, how will you find the limit?
Without striving to find the limit, living is just existing.

 

[RoninB4]

Doing what has never been done before also means you won't fail. Mistakes? Design development is what I call it.

 

[royce]

Got the hub rough cut today.
10"x .365W
Also started cutting some bronze for bearings, between the body and hub.
The material I have is 7-3/4OD x .350W
With the bronze being smaller in diameter than needed, I'll have to make them in two segments and reform them.