Optimmum thread design for tensile
Optimmum thread design for tensile
(OP)
Please help...
I assume that increasing the stress area of a thread increases its tensile force load capacity, so a UNF can withstand more tensile force than a UNC, but are other thread types better yet, such as acme or buttress ???
Thanks in advance to anyone who can help.
Joe
I assume that increasing the stress area of a thread increases its tensile force load capacity, so a UNF can withstand more tensile force than a UNC, but are other thread types better yet, such as acme or buttress ???
Thanks in advance to anyone who can help.
Joe





RE: Optimmum thread design for tensile
RE: Optimmum thread design for tensile
RE: Optimmum thread design for tensile
"The ACME thread: this is used for power transmission, for example, to produce traversing motion on machine tools."
"The Buttress thread: used when thrust on the screw is in one direction only, for example, airplane propeller hubs and columns for large presses."
I know Buttress threads are used in the petroleum piping industry to prevent leaks.
I would recommend staying with the standard 60 degree thread form, and you can use fine pitch to increase the stress area.
RE: Optimmum thread design for tensile
hope this helps,
bob creely
RE: Optimmum thread design for tensile
Your help is most appreciated.
RE: Optimmum thread design for tensile
RE: Optimmum thread design for tensile
As to material if your thread diameter is small enough 4140 Q&T to your required minimums should be readily available.
RE: Optimmum thread design for tensile
square threads are dual directional, general purpose and considered to be the strongest in that category.
having machined both types i agree the buttress is easier to machine on a lathe. i cannot testify about thread milling though, as i have no experience in this area.