Quick release thread - Core77 Discussion Groups

Core77 Discussion Groups

Materials & Processes

Quick release thread

profile | register | preferences | faq | search

UBBFriend: Email This Page to Someone!

next newest topic | next oldest topic

Author	Topic: Quick release thread
oneblueleg unregistered	posted 11-17-2003 06:23 AM Can anyone steer me to some information on thread standards for quick release threads? I imagine a male thread, quite course, with flats and the female thread with some of it's form relieved such that it slides over the male part until it meets a face up against which one wants to tighten it. Then it will tighten with 1/4 turn or so. Where can I find drawings of such a thread form? (I'm looking at 12 dia if that's of any interest). IP: Logged
rl unregistered	posted 11-19-2003 12:08 PM the only "quick release" thread that comes to mind is found in the breech mechanism of very large artillery pieces. generally a 1/3 turn engagement, it is obtained by milling out three 1/6th segments on the male portion (as seen looking at the diameter), and broaching out corresponding 1/6th recesses (like a key way on a shaft) for the block to pass through. the males thread lands are aligned with the ways in the block, inserted, and rotated 1/3 turn. a buttress type thread is used. in a much smaller application a square or acme thread would probably work. by "12" i will assume you are referring to 12 millimeters... you will more than likely have to have a custom broach cut for your purposes. this configuration is ot "infinitely" adjustable, but might be made to work for your application. IP: Logged
no crossthread unregistered	posted 11-21-2003 07:38 PM oneblueleg: Where are you located? I found a company in LA that could machine threads like you desire. My application was for a 8" dia aluminum-to-aluminum part. We developed a multi-start, modified acme type thread, that was used for a sealed, outdoor application. These guys did the machining on a 4 axis CNC chucker lathe. They are very good, but are really geared for production, not just a prototpye or two. Their experience in this type of threading comes from their work in building firefighting equipment. Provide more info on your needs and maybe I can guide you to the source. IP: Logged

All times are ET (US)	next newest topic \| next oldest topic
Administrative Options: Close Topic \| Archive/Move \| Delete Topic
	Hop to:

Contact Us | www.core77.com

Notice: Core77 does promote a FREE exchange of design related ideas in these discussion boards, but will NOT permit unprofessional or spiteful posts. If you engage in inflammatory or immature use of this service, then we will be forced to delete your messages.