Design Wormgear to support a certain load
Design Wormgear to support a certain load
(OP)
Does anyone know?Here is the design scenario.
I like to design a wormgear that support 50lbs load travel vertically.
Mech
I like to design a wormgear that support 50lbs load travel vertically.
Mech





RE: Design Wormgear to support a certain load
http://www.duffnorton.com/products.aspx?id=7842
Designing your own makes no sense unless you are a student, in which case you'd learn much more by buying a commercial unit, disassembling it, measuring it, and analyzing it to understand how it evolved to its extant form.
Mike Halloran
Pembroke Pines, FL, USA
RE: Design Wormgear to support a certain load
Start by identifying interfaces and limitations. How large, how small, where supported, how attached, how driven, how resistant to being driven, how many cycles, how fast, how smoothly? What chemical environment, what temperatures, what amount of water or oil, what cost?
RE: Design Wormgear to support a certain load
I have two more questions.
1)How would you dertermine the speed of Wormwheel and Wormgear?
2)Here is the design scenario: The Antenna weighs 50 lbs attach to wormgear and verticall move and down.
How would you select the wormgear that can support that weight?
Thanks,
Mechie
RE: Design Wormgear to support a certain load
It would be helpful to have a drawing or sketch of what you want.
Fifty lb. is a fairly heavy antenna.
Does that include a tower?
Are you proposing to lift it in a straight line, or tip it from horizontal to vertical, or what?
Mike Halloran
Pembroke Pines, FL, USA
RE: Design Wormgear to support a certain load
You'll need to define your load in terms of torque at the worm wheel shaft. The torque then determines the load on the worm wheel teeth, depending upon contact ratio and pitch circle radius. Simple rating procedures define the limiting amount of tooth load based on limits of tooth strength (will the teeth break off?) and wear/pitting (will the tooth material wear away significantly before the expected life of the set is reached?) Required load will determine size of the tooth, required reduction ratio will determine diameter of the wheel, and the remainder of the design guidelines determine the worm geometry and distance between center lines of the two components.
The rotational speed of the worm wheel shaft will depend upon the speed with which you rotate the worm and the reduction ratio of the set (wheel teeth ÷ worm threads.)
I apologize for the excessive length of the post - the answer is complex and this type of question is EXACTLY what my everyday job is about. I hope I was at least a little bit helpful.