开云体育

Grinding Shaper Tools


 

(I realize this is a minilathe group, not a shaper group, but there are shaper owners on here, plus many ingenious people, so I'm forwarding this post I sent to a shaper group).

One advantage of a shaper over a milling machine is that to cut, say, a
groove of a certain size, you don't need a specific milling cutter but can
just grind a shaper tool of that size.

But the disadvantage of this is that you HAVE to grind it and grind it
right. I'm having problems in this area. To make, for example, a 1/4"
groove tool, I have to grind a tool that's exactly 1/4" across in front,
but with side relief and front relief, and tapering slightly back from the
cutting edge on top. Tricky to do this right, and if I overshoot any of
these, the tool isn't 1/4" wide on top anymore and I have to start again.
Has anyone here developed any jigs or procedures to help grind shaper tools
better?

Mike Taglieri






 

I have seen few over years.
All I use is a 6" bench grinder.?

Dave?


 

I also use the bench grinder for drill bits too.?
I have been so long I forget the pain of learning.? All I had was bench grinder.?

Dave?


 

Hello, Mike!
Do you have access to a Deckel type tool grinder?
If not you could easily make a simple jig to do this.
Of course this would not be a quick solution but you would then have this jig for future needs.
Dick



 

[Default] On Fri, 08 Mar 2024 18:22:42 -0800, "Miket_NYC"
<mctaglieri@...> wrote:

One advantage of a shaper over a milling machine is that to cut, say, a
groove of a certain size, you don't need a specific milling cutter but can
just grind a shaper tool of that size.
In a milling machine or lathe, you would simply use a smaller tool and
take two or more passes. I imagine that should be possible on a shaper
as well?

But the disadvantage of this is that you HAVE to grind it and grind it
right.
To grind tools to accurate dimensions, you need a tool grinding
machine. Sometimes, you can use a surface grinder with the appropriate
support blocks.
--
Helge