Using a HSS 2x2x3/4 TicN roughing endmill

M

Mark G'Beer

Plastic

Joined

Mar 29, 2017

• Jun 20, 2020

• #1

You have a rush job on 60 pieces of A36 HR steel. There's a need to mill .188" deep across the face of the 4"x10". Several passes required.

You're using a manual milling machine. AcraMill, but that's not relevant. There's an auto feed for the X-axis and a DRO.

What do you do? How shall you run it?

I'm asking for help because I've been running at 200 rpm with a feed rate of .010/sec at a depth of .188". And making passes every 1.50". With the lubricant flowing on the cutter. And the endmills are taking a beating.

 

Last edited: Jun 20, 2020

M

Milland

Diamond

Joined

Jul 6, 2006

Location

Hillsboro, New Hampshire

• Jun 20, 2020

• #2

Post a picture of the setup and endmill, as you've described it I don't have a good idea of what's really happening.

What other cutter options do you have besides that particular endmill?

 

G

GregSY

Diamond

Joined

Jan 1, 2005

Location

Houston

• Jun 20, 2020

• #3

I also have little idea what you are doing but an 'insert' facemill sounds like a better plan.

 

M

Mark G'Beer

Plastic

Joined

Mar 29, 2017

• Jun 20, 2020

• #4

Sorry, guys, I have a difficult time navigating through what I need to do in order to post a photo or three.
Greg, we do have that tool. I used it initially but the 5 cutter planer is only for finishing.

 

M

Mark G'Beer

Plastic

Joined

Mar 29, 2017

• Jun 20, 2020

• #5

I'll just post it on FB, would be easier that way. I thought asking here would get better answers. In fact, I *just* joined the PM there.

 

C

CAMasochism

Stainless

Joined

Jun 6, 2019

Location

DFW, Texas

• Jun 20, 2020

• #6

Mark G'Beer said:

I'll just post it on FB, would be easier that way. I thought asking here would get better answers. In fact, I *just* joined the PM there.

Click to expand...

You want better answers you have to give better information. You don't get mad at your doctor when you tell him over the phone, "It hurts when I do this." and he has no clue what you are talking about.

You want problems diagnosed, there is no bigger repository than here, but you need to be able to do more than some basic info. Also the machine is relevant. There's a huge difference between trying to mill on a new/newish 3 HP Bridgeport/clone and a clapped out 1 HP BP/clone with 80,000 hours on it. Or in come cases, Milacron have mercy on their souls, a Grizzly.

 

R

rpseguin

Stainless

Joined

Jun 28, 2006

Location

Napa, CA

• Jun 20, 2020

• #7

Mark G'Beer said:

I'll just post it on FB, would be easier that way. I thought asking here would get better answers. In fact, I *just* joined the PM there.

Click to expand...

You’re looking to get better answers on Facebook?!??

 

M

Milland

Diamond

Joined

Jul 6, 2006

Location

Hillsboro, New Hampshire

• Jun 21, 2020

• #8

rpseguin said:

You’re looking to get better answers on Facebook?!??

Click to expand...

Shhh! Don't ruin his beautiful illusions...

 

Mechanola

Stainless

Joined

Mar 21, 2011

Location

Äsch

• Jun 21, 2020

• #9

I would clamp a 4 by 10 inches part on the table of a horizontal milling machine and go over it with a plain cutter on arbor, one roughing pass, then a finishing. Carbon steel no problem

 

M

Milland

Diamond

Joined

Jul 6, 2006

Location

Hillsboro, New Hampshire

• Jun 21, 2020

• #10

Mechanola said:

I would clamp a 4 by 10 inches part on the table of a horizontal milling machine and go over it with a plain cutter on arbor, one roughing pass, then a finishing. Carbon steel no problem

Click to expand...

I'd install a duplicate of this machine: Michigan Company Installs Worlds Largest Milling Machine | American Machinist and do them all in one pass from a large plate, then profile them on my nifty new 12kW laser: Fiber LASER Cutting Machines by Piranha