If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.
Isn't it kind of unsafe to have the break on with air instead of off? If you loose air pressure, the brake lets go and the frame could turn/fall.
We thought of that :) We couldn't use spring pressure to activate the brake with enough force. Our customer is OK with it this way. They are in the R&D area where there is an understanding that there is a certain amount of hazard involved. Definitely not a production environment.
They didn't want to have a series of holes to pin at different angles. We are hooking up a foot pedal to release the brakes at both ends.
How is the center of gravity adjusted? It wouldn't really matter with a frame, but different car bodies obviously have drastically different CG's, requiring quite a bit of adjustability.
There is a keyed plate where each spindle attaches to the main arms. There are keyways machined in at 1.5" increments to allow adjusting the CG up or down. It can only go a max 3" either way so hopefully it works.
I'm a software engineer. I press little square buttons on a flappy shiny thing, and go to meetings where we discuss how to press little square buttons better.
Cool. Right now I'm a PM Tech at AvisBudgetGroup. Maintenance, tires, and parts mainly but when were not slammed with maintenance I get to actually work on the cars and diagnose. Right now getting ready to go to school for computer design/science.
Other than that we play a lot of jokes and have fun around the shop. My boss is a big guy and a huge gator fan and I'm a huge Seminole fan so every year around game time we play pranks on each other.
I finished up work on a Chevy spark which is a crappy tiny tiny car and put all of his gator stuff off of his car onto to the spark. This was yesterday
Had the whole shop laughing and nobody realized I was doing it. Ninja
Isn't it kind of unsafe to have the break on with air instead of off? If you loose air pressure, the brake lets go and the frame could turn/fall.
Looks very nice though. Certainly looks sturdy enough. I've toyed around with building a rotisserie for my MG to be able to easily do body work and paint removal.
How is the center of gravity adjusted? It wouldn't really matter with a frame, but different car bodies obviously have drastically different CG's, requiring quite a bit of adjustability.
I am a tool and machine designer at a machine shop. We don't get into automation - just mechanical stuff.
We are just finishing up a rotisserie for the R&D center at a frame manufacturer.
Features:
1) Adjustable length for different frames. Driven by a hex drive acme screw.
2) Rotation centered on CofG of frame. Adjustable either way if I got it a bit out :)
3) Held in position by pneumatic cylinder activated disc brake.
Pics of build and the Inventor CAD model. I simplified the CAD model of the frame as I am only interested in the ends where I am grabbing it. That's why you don't see the whole thing.
Leave a comment: