Design

[John Summers]

The tooth design has a lot of restrictions. If the face of the tooth is NOT a plane, the wheel which grinds the tooth will probably gouge somewhere. Also, the plane is tilted so that the wheel will not hit the shank. Also, it looks like the picture.

The design slices a sphere at 18 degrees from the axis, going thru the tool tip. (I really just sliced a circle). Any plane slice thru a sphere is a circle. The back of the tooth is just a cone at 15 degrees to the slicing circle. Then if you intersect the cone with the slicing plane, the intersection is a toolpath. That's all that's needed if the wheel is a dovetail shape, with a 15 degree angle. If the wheel is a V shape, however, the toolpath is more complicated.

[MotorCityMinion]

Holy cow! Four ports in under 4 minutes, gobs of stock coming out of there as well.

[Müřlıń®]

That lolipop was ground with a round wheel.

 

Cut it with a dovetail and reverse engineer it from an STL.

Then you could measure the end result of your toolpaths and make sure you are the right size

[John Summers]

Oops! The "back wall" of the tooth should have an equal angle everywhere with the tooth face, the primary 18 deg. plane. Rather than making a cone FROM the next tooth, I should have made a DRAFT surface TO the next tooth, with the angle of the draft surface referenced to the 18 deg. plane. Then the toolpath is in the plane of the tooth face, using a dovetail-like wheel. The intersection of the draft surface and face-plane is on level 46.

DRAFT15.MCX-6

[AlbertZini]

Thank you John !

I made it 1111.MCX-6

Can you show how to do it with helix (spiral) or is it impossible to create in Mastercam?

[John Summers]

The toolpath to grind the cutter would be more complicated. Also, the cutting action wouldn't be much different -- the cutting angle on the outer part of the ball (which appears to be all that's used) would be almost the same. The real difficulty is creating a toolpath where the grinding wheel breaks out on the next tooth while it is cutting the face of the current tooth. It still may be necessary to make a toolpath for a V-wheel rather than a dovetail-shaped wheel in order to get clearance between the wheel and the shank, OR, put the flat face of the dovetail wheel on the draft surface, and the angled OD on the plane cutting surface.

Are you really 98?

[John Summers]

More thoughts: what is your cutter grinder setup? Is it CNC?

[AlbertZini]

Are you really 98?

I'm 27 years old, and I'm sorry for my English, I taught him 13 years ago when I was in school

 

More thoughts: what is your cutter grinder setup? Is it CNC?

I already did a week ago, these cutters only with teeth without angle, on 4 axis VMC machine