Help finding appropriate threading method for furniture workshop

1richgilbert · Jun 10, 2020

Hello, I’m looking for some advice on machines or tools to put external threads on 3-6mm brass rods.

We’re a furniture workshop who make all their furniture from CNC plywood. We want to including brass rod as a new material in the workshop to make bent metal parts, mostly brackets. I want to find a way to thread brass rods (most likely 3 - 6mm). Ideally it would be a fast setup to minimise labour time and probably batching 50-100 units at a time.

Most solutions seem to be for a lathe, we don’t currently have a lathe in the workshop and I’m not sure if its the right solution for us as we the setup could be too slow.

I’ve seen bike spoke threading machines which look close to the right solution but the diameter is too small and they might be a bit slow.
Cyclo Spoke Thread Rolling Tool for 12g 13g & 14g (rollers available separately) Simply Bearings Ltd

There are pipe threading machines but the diameters are too large.

Could anyone recommend any dedicated threading machines or tools for relatively low volumes? Any advice would be greatly appreciated

Best
Rich

doug8cat · Jun 10, 2020

Wow, my initial thought would be to get some quotes on the parts. Purchasing a machine, getting it in order, either running it yourself if ya know how, or having to hire a person, could get way pricey right quick.
Have you done a really extensive search? There might be parts for sale that you could modify or use as is.
Not to shoot your idea down but look at it really carefully before buying a machine that is dedicated making one thing.

DDoug · Jun 10, 2020

Yes, farm it out for at least 1 year.
If the product line grows, then look again at bringing it in house.

Doo what you know, and buy what you don't.

OCTANE WORKHOLD · Jun 10, 2020

1richgilbert said:
Hello, I’m looking for some advice on machines or tools to put external threads on 3-6mm brass rods.

We’re a furniture workshop who make all their furniture from CNC plywood. We want to including brass rod as a new material in the workshop to make bent metal parts, mostly brackets. I want to find a way to thread brass rods (most likely 3 - 6mm). Ideally it would be a fast setup to minimise labour time and probably batching 50-100 units at a time.

Most solutions seem to be for a lathe, we don’t currently have a lathe in the workshop and I’m not sure if its the right solution for us as we the setup could be too slow.

I’ve seen bike spoke threading machines which look close to the right solution but the diameter is too small and they might be a bit slow.
Cyclo Spoke Thread Rolling Tool for 12g 13g & 14g (rollers available separately) Simply Bearings Ltd

There are pipe threading machines but the diameters are too large.

Could anyone recommend any dedicated threading machines or tools for relatively low volumes? Any advice would be greatly appreciated

Best
Rich

As the other posters mention buying may be the way to go for you, but if you want to give it a shot.

A very cheap way to get low volumes done is to put the rod in a hand drill and spin it into a die, or spin the die onto the rod if the rod is long and flexible. One die should last forever cutting brass, if you can set yourself to always start the die square with a rest or jig it may be your simple solution. Making good threads isn't always an easy endeavor though, and doing the aforementioned isn't devoid of skill required.

Mtndew · Jun 10, 2020

Why not just buy brass threaded rod and cut it to the length you need?
McMaster-Carr

Peter from Holland · Jun 10, 2020

There are bigger threadrollers as those of bikespokes
Fette has them in their program
Available on ebay probably
I found these Lathe Thread Rolling Head M4-M6 + 3 SETS Rollers: pitch 0.7; 0.8; 1mm USSR | eBay
You cannot open these so you have to unwind them Fette has roller heads that can open
You could look on ebay.de for Gewindekopf
Rolled threads are much stronger too
But the rod needs to be a bit smaller as the OD threadsize
A full thread roller is a bit overkill for your volume I guess
Peter

TeachMePlease · Jun 10, 2020

So I did a quick google and found this: https://www.mscdirect.com/product/details/06353148 it's a manual pipe threader that takes standard dies and goes down to 1/8".

You'd have to get in touch with Rigid or a tool distributor to find something that does M6.

john.k · Jun 10, 2020

My experience is you can buy threaded rod cheaper than unthreaded rod ....so why would anyone bother .....if the OP wants studs or special bolts ,then turning expensive brass rod into chips isnt very economical compared to specialist that cold forms them.

Peter from Holland · Jun 11, 2020

john.k said:
My experience is you can buy threaded rod cheaper than unthreaded rod ....so why would anyone bother .....if the OP wants studs or special bolts ,then turning expensive brass rod into chips isnt very economical compared to specialist that cold forms them.

I can imagen a bend here and there
Threaded rod is not suitable for that
Also if it is visable threaded rod is not so appealing

Peter

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