Securely Holding a Round Part
Securely Holding a Round Part
(OP)
I am looking for a good way to securely hold a round part. Because of patents and past experiences using collets, I cannot thread the part into its mating part, I cannot use a collet, and I am getting stuck on how to make this design work.
Currently, we use a collet design, but it does not have the clamping force to hold the small part. (The parts slides out of the collet when under load) Our competition holds a patent on a similar product and so we cannot thread the part into place. To make matters worse, whatever I design must retrofit existing product lines so my hands are really tied. Is anyone aware of a tried and true method of holding round parts securely using another round part?
Currently, we use a collet design, but it does not have the clamping force to hold the small part. (The parts slides out of the collet when under load) Our competition holds a patent on a similar product and so we cannot thread the part into place. To make matters worse, whatever I design must retrofit existing product lines so my hands are really tied. Is anyone aware of a tried and true method of holding round parts securely using another round part?





RE: Securely Holding a Round Part
If you are holding if from translation, use a set screw?
If might help if you could show a picture or web site...
RE: Securely Holding a Round Part
RE: Securely Holding a Round Part
I can increase the pressure on the collet to allow it to have sufficient clamping force, but unfortunately, some of our customers don't do this causing the product not to work. We need to fool-proof the design so that it takes less force from the end user to make it work.
http://www.gunaccessories.com/hornady/Dies/index.asp
The die on the left shows a cross section of what I am talking about.
RE: Securely Holding a Round Part
RE: Securely Holding a Round Part
http://www.ame.com/spieth/csleeve3.stm
They handle the Spieth clamping components. I don't know if the they come in small sizes. I have had very good results using Spieth clamping system in the larger sizes. Cost and available sizes might get you, but I would contact AME. As mentioned above the Ringfedder lamp might work.
Have you looked a wire or ball detent type locking device as found on screwdriver bits.
RE: Securely Holding a Round Part
Hydraulic expansion chucks and arbors are used to precisely restrain cylindrical thin wall parts in some applications I am familiar with. I don't know if this would be feasible in your application. See http://www.hydralock.com.
RE: Securely Holding a Round Part
RE: Securely Holding a Round Part