[How-To] Drill a Morse Taper

[Brento]

How would one drill a hole and then run a Morse Taper reamer into it?

 

[benmychree]

One would drill an undersize hole, bore it to a close approximation of the taper, then use a roughing reamer to get it nearly t9o size, then use a finishing reamer to get to final depth/size.

 

[Brento]

You have to use a roughing reamer right? I have a finishing just not a roughing.

 

[woodchucker]

if you look in machinery's handbook they have info on how to drill different steps. I think there is a calculation.. I remember seeing something about it long ago when looking for info on tapered pins.

 

[Brento]

Looking now thank you!

 

[benmychree]

You have to use a roughing reamer right? I have a finishing just not a roughing.

If the hole is reasonably accurately bored, the finishing reamer will suffice, but clear the chips frequently so that it will not load up and possibly break flutes, ask me how I know that.

 

[Brento]

It will be in plastic. I am making a drill block for my newly acquired MT2 drills

 

[benmychree]

plastic may not be a good choice for machine accessories; what will this "drill block" do?

 

[woodchucker]

oh, for plastic a reamer will be fine. no need to step drill.
steel yes.. AL probably it's grabby, for plastic... grabby but no need to step drill.

 

[woodchucker]

plastic may not be a good choice for machine accessories; what will this "drill block" do?

I think he means as an index.