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Re: Auto Chasing Threads
Re: Auto Chasing Threads -- Johnjzt8b5	Post Reply	Top of thread	Forum

Posted by: randykimball ® 01/30/2007, 23:06:34 Author Profile eMail author Edit

How many parts are there to do and what is their relative value. This is going to be a fairly (expensive)complex machine. The parts must be gathered, aligned, grasped, chased, and expelled... in 4.5 seconds. If the run is not a huge quantity....Can they be placed into a socket (a pair of air vice jaws cut to match the shape profile)? If so they can be chassed with with a die attached to a tapmatic. This means a human placing them between the jaws, depressing a foot switch, operating a drill press, and exchanging parts in about 4 seconds or less (if the parts can be handled that easily)? A tapmatic will attach to a drill press and spins (tighten) when you push down then reverses when you pull up. This can work IF you can afford to occupy a human wage to do so. Also, the drill press can be operated my an air cylinder with a hydraulic dampening feed control method. This gives you the abiltiy to operate the whole process in a fast cycle when the operator touches two safety buttons. The operator could remove the chased part with one hand, place a fresh part with the other, then reach for the two safety switches (best placed in a resting position near their lap). You would want to pay by the part to encourage productivity. If you have vast quantities you can do this method while a special machine is designed, prototyped, tested, improved, and installed. Knowing the size, weight, shape, material spec and several other things are going to be required to properly attempt a machine design. As a first stage to automation, a human could sort the parts onto a shute for a machine to pick from. The portion of the machine that does the sorting could be developed and installed next. If by "little machine" you are thinking "cheap"...This is not going to be a simple "little" machine. The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them. Modified by randykimball at Tue, Jan 30, 2007, 23:38:34

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Re: Re: Auto Chasing Threads
Re: Re: Auto Chasing Threads -- randykimball	Post Reply	Top of thread	Forum

Posted by: Johnjzt8b5 ® 01/31/2007, 08:56:15 Author Profile eMail author Edit

Thanks for your quick reply. The parts are moving on an automatic indexing conveyor (on an existing assembly line) and are fixtured adequately. I just don't want to design/build a simple machine that some shop is pounding out by the hundreds. Others must be chasing threads out there...? Thx, John

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Re: Re: Re: Auto Chasing Threads
Re: Re: Re: Auto Chasing Threads -- Johnjzt8b5	Post Reply	Top of thread	Forum

Posted by: randykimball ® 01/31/2007, 09:03:32 Author Profile eMail author Edit

Oh, that is different. ... Can the parts be stoped in groups? Are they located in a pattern consistantly? If so a bank of drill press heads with tapmatics on them can chase the threads by the gang. This will be very productive with minimum cash investment. However, I'm confused... do you need them chased or just de-burred? The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them. Modified by randykimball at Wed, Jan 31, 2007, 09:04:28

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Re: Re: Re: Re: Auto Chasing Threads
Re: Re: Re: Re: Auto Chasing Threads -- randykimball	Post Reply	Top of thread	Forum

Posted by: Johnjzt8b5 ® 01/31/2007, 11:59:45 Author Profile eMail author Edit

We cut a slot in the side of the thread which introduces burrs. These need to be chased/cut/removed. They are too heavy for a wire brush.

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Re: Re: Re: Re: Re: Auto Chasing Threads
Re: Re: Re: Re: Re: Auto Chasing Threads -- Johnjzt8b5	Post Reply	Top of thread	Forum

Posted by: randykimball ® 01/31/2007, 23:47:31 Author Profile eMail author Edit

Are the parts steel of softer metal? Reason for asking... A quick effective way to remove burrs from slots and thread leads is by placing the area against a soft de-burr wheel made by several companies. Burr-tex, and bright-boy are trade jargon for a few. You may give it a try. Look in you favored catalog for soft de-burr wheels for grinders. They can also be purchased to fit ain motors but these don't last very long and you end up spending valuable time replacing wheels. Not knowing enough, I'm wondering if an automated or articulated arm with a grinding wheel can be directed to the slot while on the production belt. ..not knowing how well they are located and contained. The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.

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