Nut Runner Feeders

Do you have to tighten them all at same time? Will you use 24 nut runners in parallel?

Then you will have to design or let be designed a "machine" to do the job. The machine is quite complex so that it will be justified only if you have a series big enough.

Or are they M24 nuts? The dimension across flats is 30 for M20 and 34 for M22 yours is not a standard one.

M24 nut has a dimension over edges 39.38 and M22 -37.72; M20 33.53

In general the "diagonal" for a hex nut is slightly less the dimension across flats/cos30°=1.1547*S

In your case the ratio is 39.2/32 =1.225 > 1.1547 and this is impossible for a hexagonal nut.

Hello there,

If you are considering building a device to install 24 nuts at the same time you could consider the following.

Simple off the shelf torque wrenches driven by a central air supply. These would have to be aligned by installing them in a framework which advances as the nuts advance on the bolts. With some imagination it could be done. The instant demand on your air supply would be a limiting factor. So begin with the min number of torque wrenches being a multiple of 24. See how much air they demand at once and how long it takes to secure that many nuts. I assume a bolt circle or pattern can be used. If it takes 1 minute to tighten 4 nuts, you can calculate tightening times for 24 + the time to reposition.

A more expensive set-up would be to use a chain drive to close all 24 nuts at once. Torque values would be difficult to set if you don't have a slip clutch mechanism. The simplicity of a mechanism like this can be seen by visiting injection Mold Supplier Hasco who make high precision unscrewing molds driven by a chain or clutched drive system. Add the cost of the parts and allow for engineering and mfg and it can be expensive.

You can try design your own hybrid system using the concepts from Hasco or other Mold supplier. A few good torque wrenches in a frame may be the cheapest way.

Look at multiple spindle drilling rigs to see their chain drive mechanism. Ask their manufacturer to quote your conceptual nut drive rig and you may be pleasantly surprised.

Hope this helps, good luck.

Hello get manojram,

The space you say you have to work makes things easier.

It all depends how the nuts are laid out at to the answer really. What do the nut hold? Is it the bottom of the machine?

Is there any possibility of you sending a pic' in please?

There may well be a tightening product out there. But if not, a 'one off' nut tightener on this scale may cost more than the machine?

Why do you have to tighten all nuts more or less at the same time?

Take care.