Spin Milled - Explain

[bIGwIRE]

That is a CNC machined head with the spin milling process used to machine the grooves.

This is a cast head with a CNC machined face with the spin milling process used to machine the grooves.

[Bump-n-MI]

This is a

Agreed.

Vokey - cast head, CNC machined face, spin milled grooves

[Dpricenator]

I figured it out....

[bIGwIRE]

I figured it out....

Is that really a hair being split in the picture? Looks more like 2 twisted together... And that knife doesn't appear sharp enough to do the job anyway. This picture, imo, is a fraud...

lol

[Dpricenator]

Is that really a hair being split in the picture? Looks more like 2 twisted together... And that knife doesn't appear sharp enough to do the job anyway. This picture, imo, is a fraud...

Yeah you're probly right. best splitting hairs pic I could find.

[Shorty]

Getting information right is not splitting hairs.
The spin mill process is about creating square and sharp grooves. Nothing else.

[Fourputt]

Adding the term "spin" to describe a milled groove is meaningless as far as the manufacturing process is concerned. I'm a retired machinist with 33 years on the job. Milling is milling... all milling cutters rotate... that's what milling is, running a rotating cutter into a secured piece of metal (or plastic or other exotic material) to remove material from it. The form of the cutter and direction of rotation determines what type of milling cutter you have.

I've never seen exactly what is used for the grooves in a golf club, but it would most likely be some sort of what we call a slitting saw. There might be several identical saws gang mounted to cut several grooves at once, and I don't know what diameter they would use, but that is the most likely arrangement.

To mill the face and get those wide feed marks they would use a face mill or more likely a fly cutter (a face mill with just a single cutting edge) and run it at a high feed rate maybe .03"-.05" per revolution) across the clubface. The width of the marks on the face are controlled by the feed rate and the number of cutting edges. For most of the work I did, a rough finish like on that milled clubface shown above would only be allowed on a non-functional surface, or on a surface where the function required a bad finish, like a golf club.

Anyway, the point is the the term "spin-milled" is relatively meaningless as far as the actual manufacturing technique is concerned. IMO, what it refers to is that the face is milled in such a way as to promote more spin, and I seriously doubt that Vokey holds any patents on the basic machining techniques which would accomplish this.

[Mr3Putt]

Is that knife milled?

[iacas]

Adding the term "spin" to describe a milled groove is meaningless as far as the manufacturing process is concerned. I'm a retired machinist with 33 years on the job. Milling is milling... all milling cutters rotate... that's what milling is, running a rotating cutter into a secured piece of metal (or plastic or other exotic material) to remove material from it.

Yeah, but "Spin Milled" is marketing-speak, and "Vokey Milled Groove Wedges" doesn't sound as good.

[jamo]

Adding the term "spin" to describe a milled groove is meaningless as far as the manufacturing process is concerned. I'm a retired machinist with 33 years on the job. Milling is milling... all milling cutters rotate... that's what milling is, running a rotating cutter into a secured piece of metal (or plastic or other exotic material) to remove material from it. The form of the cutter and direction of rotation determines what type of milling cutter you have.

Amen.....