Creating a User-Friendly D-Hole for Mounting a DC Motor Shaft

[flux110]

Hi,

I have a DC motor that have these dimensions: http://www.micromotorssrl.com/motor_l149/L149.pdf and the problem that i have is to make the "D-hole" in a solid 6mm steel shaft. At the bottom of the hole i was planing to put a neodymium magnet so that you easily could remove and put back the shaft. I don´t have access to industrial tools.

Anyone have any smart suggestions how to do this o anyther fast way to mount the shaft? Is the only way to do it to mold it?

Best Regards,
Flux110

 

[Q_Goest]

Hi flux,

the problem that i have is to make the "D-hole" in a solid 6mm steel shaft. At the bottom of the hole i was planing to put a neodymium magnet so that you easily could remove and put back the shaft.

this isn't clear to me. Do you have a motor with a shaft that has a flat spot on it as shown in the link? Are you trying to put a D shaped hole into a pully or something so the motor can drive it? Not sure what the magnet is for either. If you're trying to make a D shaped hole, the easy thing to do would be to make a round hole and put a set screw on the flat spot. Maybe you can elaborate on what it is you're trying to do.

 

[flux110]

Hi Q_Goest,

So i have a a motor with a shaft that has a flat spot on in as shown in the .pdf.
And now i want to make a shaft to connect to the motorshaft that has the dimensions of the attached picture. But the problem is how to make the "D-hole" without to mold it from scratch or an exspensive industrial laser?

The magnet in the bottom of the "D-hole" is so that the shaft won't drop of when it is connected to the motorshaft in a vertical position and also because its a fast attach system with no screws or nuts.


"If you're trying to make a D shaped hole, the easy thing to do would be to make a round hole and put a set screw on the flat spot." Didin´t really understod what you meant by this, could you explain more i detail?

 

[Q_Goest]

Can you drill a hole for the motor shaft to be inserted into, then drill and tap another hole at 90 degrees for a set screw? See attached.

 

[flux110]

That would work but i don't want it that way it will take to long to add and remove the shaft..
It has to be "user friendly" that's why id like to just have a D-hole to insert it to

 

[wolram]

That would work but i don't want it that way it will take to long to add and remove the shaft..
It has to be "user friendly" that's why id like to just have a D-hole to insert it to

It may be best for you to get hold of an RS catalogue (mechanical volume), once you have one you can see what your options are.