Hirth Coupling only for positioning
Hirth Coupling only for positioning
(OP)
Hi
I would like to have angular positioning of a lever with a Hirth couplung. Is it posible to design a couplung with one side of the tooth perpendicular (0° angle) and the other side normal (30°)? How difficult is to maschine such piece.
The problem:
I would like to have the rotation of the lever fixed only in one direction (see attachment). For the axial force I want to use just a simple spring because the lever angular position will be positioned by hand. The maximal torque is estimated to 200Nm.
The problem with a standard Hirth gear is that the tooth's angle is to large which requiers large axial force.
Any other suggestions how to design a mechanism for the same job.
Thnx
I would like to have angular positioning of a lever with a Hirth couplung. Is it posible to design a couplung with one side of the tooth perpendicular (0° angle) and the other side normal (30°)? How difficult is to maschine such piece.
The problem:
I would like to have the rotation of the lever fixed only in one direction (see attachment). For the axial force I want to use just a simple spring because the lever angular position will be positioned by hand. The maximal torque is estimated to 200Nm.
The problem with a standard Hirth gear is that the tooth's angle is to large which requiers large axial force.
Any other suggestions how to design a mechanism for the same job.
Thnx





RE: Hirth Coupling only for positioning
First, eliminate the possibility that you can't use a semi- standard stock machine tool part from a place like Carr-Lane or Reid's.
Mike Halloran
Pembroke Pines, FL, USA
RE: Hirth Coupling only for positioning
What kind of tolerances (if the outer ring diameter of the gear is 50mm) would you suggest? Where can I find this tolerances?
Thnx
RE: Hirth Coupling only for positioning
https://sdp-si.com/eStore/Direct.asp?GroupID=980
RE: Hirth Coupling only for positioning
With enough room between teeth you could use a square end mill on one side of the tooth and a tapered end mill on the other side of the tooth. It wouldn't be tough at all to do with a CNC mill. If the teeth are hardened it might be a bit expensive if grinding is required.
RE: Hirth Coupling only for positioning
They are all of fthe shelf items
RE: Hirth Coupling only for positioning
Is anything like that available on the market? How is it called?
RE: Hirth Coupling only for positioning
RE: Hirth Coupling only for positioning
http://www.carrlane.com/catalog/index.cfm/27025071...