We have a scissor lift with two linear slides on each side powered with two motors. The issue we are having is that the part that pulls up the linear slides wants to fall back down and that it wants to bounce all over the place.
Also on our linear slide we are using the plastic sides with slide on the linear slide but one plastic slide goes back and forth like butter, while the other same exact one on the opposite side takes a lot of force to move back and fourth. Theres a lot of friction somewhere and we can’t seem to solve it, we event tried sanding the plastic down a little.
Please if you can give me tips with using linear slides with scissor lift
basically the bounce is when it is wanting to go up on the linear slide but falls back down to it is more or less “bouncing”.
and i can definitely get more photos by tomorrow.
One issue I would like some on to is since I do have two linear slides, I can’t think of a way to attach something study to the middle of the “X” scissor to make it go up and down correctly. Its ghetto right now
Most likely, the linear slide truck (the plastic piece) that has a lot of friction is either attached in a way that it is misaligned, or the truck or the rails are bent. However, it is most likely the first.
I think what you mean is that the lift goes up, and when you stop falls back down. If this is the case, definitely do what 400X recommended, add elastics/latex tubing. Ultimately, they should counteract the weight of the lift, so there is no force needed to keep it up. Also, you might want to add a trim, a small power (10-15 usually) to your motors in the up position. This keeps them “locked” and stops them from moving backwards. You don’t want to go any higher than necessary, as it will overheat the motors.
All the linear slides are brand new and perfectly aligned so it would have to be misaligned then. All the force on the plastic slide is on the far left side of it which is where the scissor lift rest at so that could possibly be it? Because the one that moves smooth has a small spacer and the one that moves bad has two large spacers on it causing it to be more to the left of the slide than the other.
Yes that’s what it’s doing, just goes up and falls down even because I thought about elastics but didn’t really know if it was going to make that big of a difference, but I will try it asap.
Ah, yes, this can be an issue as well. You want to have the force on the slides to be perfectly up and down for them to run smoothly. If it is trying to twist or bend them to one side or on an angle, it can cause them to bind and not run smoothly. Try to get the point where the force is being applied near the center of the slide, and not pulling at an angle or to the side.
I attached the part I’m using to hold the scissor lift on, so basically I have a long bolt going through the middle and it does bend a little because the scissor lift rest about an inch away from that actual part. So basically the scissor lift needs to be attached to the plastic slide on top and not the side?
