Mechanical engineeree type people....

[Tefal]

whats the use are they sealing the slot or something?

why do they need to remain the exact same distance from the centre?

is the load perfectly parallel to the pipe or not?

 

[doofer]

An opposing worm drive would do this depending on the type of exertions required of it.

 

[Uncle Petey]

**PAGING MACCAPACCA'S WIFE**
**MACCAPACCA'S WIFE TO RECEPTION PLEASE**

 

[bitslice]

Not interested in vaguer than vague threads, application please

 

[GreatAuk]

Get the work experience kids to move them up and down

 

[Sandycheeks]

Paint attached.

The weight either plate may have individually may be, 500kg?

-In which direction...
-Is the hollow tube circular
-what diameter is it
-how long is it
-how large are the plates
-what sort of distances are the plates going to travel
-do the plates start off touching at the centre line
-what direction is the force applied

plus a lot more questions I haven't thought of yet..

 

[scotty365]

I'm a machine tool 'Engineer' maintaining and developing machines for any application - I could help you if I understood the question - it's hard to get a grip on what you want to acheive - if my interpreation is right then the scissor thing is redundant. Please clarify more.
Also were are the loads coming from; what vectors are involved?

 

[Regy53]

have you tried some wd40?

 

[Unicorn]

Ill make this easier for you

 

[Slam62]

Just don't bother, go down the pub.

 

[R.C.Anderson]

Something like this?

If the cog is fixed, and the runners are in a housing, as one of the plates move, the other will move in the oposite direction, always remaining an equal distance from the center.

 

[kindai]

Something like this?

If the cog is fixed, and the runners are in a housing, as one of the plates move, the other will move in the oposite direction, always remaining an equal distance from the center.

Excellent thought!!!!

 

[rhyswt]

As Anderson said above:

 

[powelly]

rubber bands