Torque on Cross head screws

[Nellysdad]

Can anyone direct me to a repeatable, accurate, measurable way to tighten cross head screws. We are using an electric screwdriver and #1 bit currently but the charge on the screwdriver eventually diminishes, the bit eventually gets worn (replaced every 4 weeks) and the assemblers change. I am trying not to use a torque wrench, but if I need to, I guess
I am looking for an accurate torque wrench or similar in the region of 0-10 inch pounds? Perhaps an efficient screwholder (sleeve-type for reaching into inaccessible areas) may assist my quest
All feedback welcome.
Regards

 

[vonbad]

Nellysdad,
I ran a hand assembly production shop and ran into the same problem. We were also trying to be as quick as possible. As I do not know your application in detail its' hard to say if this will work for you.

First, I only had to deal with a single torque settings. But I suppose you could torque out each setting if you have various requirements.

The solution that worked best for me was to use an in-line cordless screwdriver with a clutch (black&decker comes to mind). We would purchase several at a time ($20-$30 each) with a packages of bits. Since the units come with charging packs, we would keep 2 or more batteries on the charger.

We would check the torque setting on new units and left it there until it died. Please note that these were designed for home owners, we would do that in a week of constant use. The drivers under our use would only last about a year at most. I would keep an eye out for sales to replenish.

As for the battery and quality of the bit, I would have to rely on the assembler to change the battery and bit as needed. Also, with the correct adaptor it was a great nut driver as well.

 

[ajack1]

Have you considered using air?

http://www.desouttertools.com/HTML/Desoutter-Menu-page-Screwdrivers.htm

 

[macvicar]

Depending on how accurate you need to be with the final torque, you may want to look at a dc tool. This will give you a repeatable torque. There are a number of manufacturers who have tools with & without transducers depending on how much you want to pay.

Check out Apex - I think they have screw bits that have "holders" attached to keep the screw on the bit.