Need advice on linear motion
Need advice on linear motion
(OP)
I am currently in the process of designing/specifying a height adjustable table within a containment, recently I was told the table will also have move on rails laterally. I have used a screw jack system to move the table vertically but I was thinking of using a rotating screw jack to also move the table laterally on the rails. It has been specified that the table should be driven manually (via handwheel) and the space requirements are very tight due to the surrounding facility/containment.
What I was wondering has anyone got anything better/different which would meet my requirements or any advice/direction on something which could do the job. The dimensions of the height adjustable table is 1444 x 1198 x 1115(Max Height) mm and it weighs approx 3 tonne when carrying a component. The amount of travel the table needs to do is 1010mm (Max) on a set of steel wheels and rail. There is approx 80mm clearence beneath the table.
The main difficulties I am having is that there is a door at the opposite end of the containment preventing a lead screw being supported at that point and there is no room either side of the table so the lead screw has to go through the middle of the table. I suppose a plummer block would be possible to support the screw but is there any way of supporting the lead screw within the design or would something else be better suited to drive the table manually?
This is my first post and I am unsure if this is the correct way to use this forum, but any advice would be much appreciated.
What I was wondering has anyone got anything better/different which would meet my requirements or any advice/direction on something which could do the job. The dimensions of the height adjustable table is 1444 x 1198 x 1115(Max Height) mm and it weighs approx 3 tonne when carrying a component. The amount of travel the table needs to do is 1010mm (Max) on a set of steel wheels and rail. There is approx 80mm clearence beneath the table.
The main difficulties I am having is that there is a door at the opposite end of the containment preventing a lead screw being supported at that point and there is no room either side of the table so the lead screw has to go through the middle of the table. I suppose a plummer block would be possible to support the screw but is there any way of supporting the lead screw within the design or would something else be better suited to drive the table manually?
This is my first post and I am unsure if this is the correct way to use this forum, but any advice would be much appreciated.





RE: Need advice on linear motion
Or place a rack between the rails and engage a pinion driven through a gear box.
Or support a power transmission chain at each end of the rails and drive through a gear and a couple of idlers.
RE: Need advice on linear motion
Adriaan.
I am a Mechatronics Engineer from South Africa.
www.martin-electronics.co.za
RE: Need advice on linear motion
If you both have any example applications where these systems have been used that would be helpful. I like the idea of having the manual operated gearbox/footpump being away from the table as space is the most important restraint.
RE: Need advice on linear motion
-5^2 = -25
http://www.eng-tips.com/supportus.cfm
RE: Need advice on linear motion
RE: Need advice on linear motion
TygerDawg
Blue Technik LLC
Virtuoso Robotics Engineering
www.bluetechnik.com
RE: Need advice on linear motion