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Ivant001
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- TL;DR Summary
- Seeking suggestions for design considerations for lead screw + guide rail set up to move 400 kg load
Hi everyone!
I'm a mechanical engineering undergraduate and am designing a linear motion system for a school project.
I hope to be able to use this system to achieve opposing motion for 2 x 200 kg loads (i.e. move them closer/ further apart simultaneously). Referring to the picture below:
I'm thinking of using:
I've come up with the following considerations to account for when sizing the guide rails and lead screw:
Guide rails
Am I on the right track? Also, does anyone have further suggestions as to what I should account for when:
Any help would be appreciated. Thank you for taking the time to read my post!
I'm a mechanical engineering undergraduate and am designing a linear motion system for a school project.
I hope to be able to use this system to achieve opposing motion for 2 x 200 kg loads (i.e. move them closer/ further apart simultaneously). Referring to the picture below:
I'm thinking of using:
- a twin lead screw to move the loads when rotated
- a crank handle, attached to the lead screw, which will be rotated by hand
- guide rails, possibly with bearings, to take the weight of the loads and ensure the loads move in a straight line
I've come up with the following considerations to account for when sizing the guide rails and lead screw:
Guide rails
- Sized to withstand the weight of the loads (compressive stress must not exceed compressive yield strength of material)
- Use ball bearings to reduce friction when loads are sliding
- Sized to withstand compressive and tensile stresses associated with moving the loads (which will arise from frictional forces between the load and the guide rails)
- Sized to ensure that a person can supply sufficient torque to turn the lead screw manually, with the help of a crank. A simple gear assembly may also be required
Am I on the right track? Also, does anyone have further suggestions as to what I should account for when:
- Designing such a system, in general
- Sizing the guide rails and twin lead screw?
Any help would be appreciated. Thank you for taking the time to read my post!