6g round metric cutting die dimensions?

[drummerdimitri]

I'm trying to design my own square die holder to 3D print it and use it for power threading while it is affixed in my bench vise.

Only problem is measuring the angle between the 4 different screws that hold the die in place as when crossed, they do not make a 90 degree angle.

Another issue is the 4 dimples in my dies don't seems to be on the same plane. The measurement varies from 2.3 to 2.6 mm or so from either face and I'm not sure if this is due to poor quality control or engineered this way.

Does anyone have a diagram/measurements of the above?

Here's a picture of what my dies look like in case that helps:

https://shop.eriks.nl/en/tools-mach...-die-tolerance-6g-type-1804-pr-ec002198-0072/

 

[ChevyEFI]

Are you trying to simultaneously use 4 dimples? Possibly unnecessary. In other words, has a simpler design failed, warranting the extra design improvement?

 

[drummerdimitri]

Are you trying to simultaneously use 4 dimples? Possibly unnecessary. In other words, has a simpler design failed, warranting the extra design improvement?

Yes I am since I am basically trying to imitate the way my handheld die holder works and I am sure there is a good reason for having 4 screws as opposed to just 2 otherwise, I am sure the designers wouldn't have bothered with the extra cost of adding them.

Also, keep in mind I will be making this part out of plastic so if anything, it should have more screws holding the die in place as opposed to have less of them doing the job.

 

[whateg01]

Mine only has a single screw, so I don't know what advantage multiple has unless they think you are going to adjust the size of the die with the others

 

[KamiCrit]

You'd be surprised by how much information you can get out of OEMs by emailing them directly.

 

[MushCreek]

I can't imagine a plastic die holder being strong enough to work, unless you're threading plastic parts. There's a lot of torque on a die. I think it will just push the screws out, even four of them.

 

[drummerdimitri]

I was able to design the die holder using only 2 M4 screws and nuts and used a 4 mm stainless steel rod to locate the die and assist the screws to help assist with the large amounts of torque required to get the job done.

Printed the part out of carbon fiber impregnated nylon which is one of the best engineering plastics out there surpassed only by polycarbonate but it is well suited for this application since the friction generates tons of heat when power threading.

Just tried threading a 8mm stainless steel rod and it worked perfectly! The die holder showed no signs of fatigue.