Inspection method for T10 Hex driver

[Jules31]

Can anyone recommend inspection method for T10 Hex driver? We are trying to make a gage for it, however the manufacturer said that it will be tight, and we maybe rejecting good parts. Any recommendations?
Thank you in advanced.

 

[Eredhel]

Even precision ground plug gages have specifications that allow for the minor diameter to be smaller to allow for tolerance stacking and such. I haven't dealt with hex but I'm betting there is something similar. You might ask the manufacturer what specification/standard they are going by when making them.

 

[ScottK]

what are you inspecting?
the dimensions of the star?
The torque the driver puts out?

Please give more details.

 

[Jules31]

Yes we are measuring the star. We have a screw that should fit the T10 hex driver. However, we need to inspect the drivers to make sure our manufacturer can manufacture these consistently. We will eventually use the driver to inspect our screws as a mating part (not ideal)

 

[ScottK]

so you're going to check a driver that is going to be used to check a screw?

what kind of measuring instruments do you have? You could use an optical comparator and create an overlay with min/max dimensions.

does this all need to traceable to national standards?

 

[Ninja]

...don't know if you already have a CMM (Coordinate Measuring Machine) on site already...but it seems that it would be perfect for this.

MicroVu Vertex, OGP Flare or many others are readily accessible...(For <$40K)

If you have one on site already...it might even be a quicker way to check the bolts as well (though mating with the driver is quite more of an "in use" test to be sure)

 

[Jules31]

...don't know if you already have a CMM (Coordinate Measuring Machine) on site already...but it seems that it would be perfect for this.

MicroVu Vertex, OGP Flare or many others are readily accessible...(For <$40K)

If you have one on site already...it might even be a quicker way to check the bolts as well (though mating with the driver is quite more of an "in use" test to be sure)

We do have an OGP, but it's old.
What is the model number that you would recommend to inspect a hex screwdriver that is about 15 in long to inspect the star on the hex?

Thank you.

 

[Jules31]

...don't know if you already have a CMM (Coordinate Measuring Machine) on site already...but it seems that it would be perfect for this.

MicroVu Vertex, OGP Flare or many others are readily accessible...(For <$40K)

If you have one on site already...it might even be a quicker way to check the bolts as well (though mating with the driver is quite more of an "in use" test to be sure)

ScottK,
I would like it to be traceable to national standards, but for T10, it is very difficult, wouldn't it?

 

[Ninja]

We do have an OGP, but it's old.
What is the model number that you would recommend to inspect a hex screwdriver that is about 15 in long to inspect the star on the hex?

Thank you.

15in long could be a problem...removable head?

The problem would be getting the 15" deep focal point.
If you stand the drive head (maybe you have to do the whole part), can your OGP focus on the tip?

All of my experience is with the Vertex...and pretty much any model would do as long as you can get the star in focus in the first place.

That said...you mentioned that it is really the screws you want to analyze:
"We will eventually use the driver to inspect our screws as a mating part"

Using the OGP to inspect the screw heads makes more sense to me than using a driver as a pass fail...and I assume the screws aren't 15" long...
Would that meet the need you are trying to meet?

 

[ScottK]

ScottK,
I would like it to be traceable to national standards, but for T10, it is very difficult, wouldn't it?

The inspection equipment, not the driver, would be traceable to national standards.

Are the drivers inexpensive? If so can you take a sample and cut them so that they will fit on the OGP? and then, as Ninja says, use the OGP for the screw heads?