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HI Torque slots

HI Torque slots

HI Torque slots

(OP)
Hi everyone. I’m new to this forum so I hope someone can help. I currently work for a company that machine Hi-Torque slots in the head of aircraft screws. Currently we use a dividing head, on a cnc miller to hold the screw whilst the cutter plunges into the head of the screw to the required depth. When this depth is achieved the dividing head rotates 7° clockwise then 7° anti-clockwise, the sides of the cutter are dovetailed so the sides of the slot become undercut to prevent cam-out of the screw driver. This set-up is quite over-kill for the job that we are doing, can any one suggest a simpler method? Any suggestions at all would be gratefully received.
Andrew.

RE: HI Torque slots

I found a set of drivers for sale on eBay, with pictures.  There is clearly a standard for the driver geometry, and the slot geometry, so you can't just arbitrarily change the geometry of the slot.

Right off the top of my head, I can't think of another way to generate what I think is the required geometry.  

Maybe your cutting tool supplier can suggest machine settings that will speed up the existing operation.  

Mike Halloran
Pembroke Pines, FL, USA

RE: HI Torque slots

(OP)
Hi Mike. Thanks for the reply. You're quite correct there is a standard for the slot. What I'm looking for is  faster way to machine the slot, currently we load and un-load each bolt into the dividing head by hand and slot one bolt at a time, it takes around 25 seconds per bolt. I've looked into a robotic loader but the cost of £40k was prohibitive. I was hoping for some kind of hopper feed device that would maybe machine two slots at once?

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