Milling 304 Stainless with a Carbide End Mill | Speeds and Feeds Tool Test

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Milling 304 Stainless Steel can stink if you aren't sure where to start. Even if you can, are you getting the most out of your end mills?
In this video, we cover how to find a speeds and feeds starting point and how to tweak the recipe to achieve your specific goals., whether it be maximizing tool life, process reliability, better surface finishes, OR higher material removal rates.
We'll use two different machines, the Tormach 770 and the Tormach 1100M. PLUS, we'll explore the impacts of coolant methods (fogbuster vs. flood) and other ways to push your tools further.
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Links for this video:
Better Speeds & Feeds? provencut.com
Shop Microscopes | bit.ly/2LParmv
Helical & Harvey Tool Library Download
bit.ly/2AMaNqv
Helical 3 Flute, Corner Radius - Variable Pitch
bit.ly/2LUzKGH
Speeds and Feeds Basics on NYC CNC
bit.ly/2uCrf9b
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Reach us / CNC Info:
Manufacturing Entrepreneurship Resources:
www.nyccnc.com
Online Fusion 360 Training: bit.ly/LearnFusion
Hands-On CNC Classes: www.nyccnc.com/...
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I discovered machining as an adult and am grateful to have found something I love and can share with others. We hope NYC CNC not only makes you a better machinist but helps you understand and learn more about how to succeed as a manufacturing entrepreneur! 5 Reasons to Use a Fixture Plate on Your CNC Machine: bit.ly/3sNA4uH

Опубликовано:

15 окт 2024

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Комментарии : 82

@DrunkenBobDole 5 лет назад

When working with small, short endmills like this having thru spindle coolant and an unsealed collet is a real life saver. Nothing can block the coolant if it’s coming from the tool.

@terry6131 5 лет назад

As a novice with a Chinese mill, I learnt a huge amount on this video. Thanks :)

@chrism8787 5 лет назад

hello from uk been an engineer for 12 years now on both sides of the technology front. for all those people who still using the old bridgport universal mills, a little trick i learnt to get get deep slotting in high carbon steel like en24t even with fairly rubbish hss 3 flutes end mill and two flute slot mills 4mm and below if set your rpm a little on the slow side 1500-1800 and keep your feed rate low 40-50 mm a minute or 1.8-2 ipm with a constant stream of coolant directly at the cutter. it doesn’t have to be high pressure just enough to wash the chips behind the tool and most important thing you want in a good holder side lock preferably, rigid as possible and it will just chug right on through I’ve got ten or so slots like this out one little hss end mill

@ricardo-iw9sq 5 лет назад

Hi we find that when we use a 63 mm diameter 6 tipped cuter to machine p20 the vibrations running through the spindle knock the machine out and when we talk to the tip supplier cutwell they ask what machine and we say Bridgeport interact and they say arrr sorry but you don't have enough spindle speed you will need to take out some tips or run the feed slower, we love our machine and never run it in anger it's a shame we carnt get the modern fast tools to work as designed, we've had it new since 1988 and a cracking m machine

@lwilton 5 лет назад

The Bridgeport mill design is wonderful and has made half the stuff in the world, but it is at least 80 years old now. Modern CNC machines are far more rigid and have more power, and run faster spindles and usually have higher coolant pressures and flows. Modern tooling is designed for the modern machines, not for an 80 year old machine design. Its reasonable to have to downgrade the tool or its capabilities to handle the slower, less rigid machine. I'm not knocking the Bridgeport in any way. I've got one and love it. But it's just a fact that modern tooling isn't designed for its capabilities, and you sometimes have to make adjustments.

@multiHappyHacker 5 лет назад

I've been slotting steel plates with a 3/16 endmill for the last week, Kennametal HPHV > Guhring Diver. 25 degree ramp, 5,100 RPM, only 5 IPM ramp, 12-16 IPM slotting. Can't wait to try the new TE they came out with for slotting. Sounds like a provencut test extravaganza. As for process reliability I am getting like 40 plates per tool with those feeds and speeds (10 gauge plate, ~0.130" thick), and believe me there is a lot of slotting involved--they are 5 inch circles with a 2 inch bore and like 15 smaller slots per part. Here's to keeping it in-house.

@multiHappyHacker 5 лет назад

If anyone is wondering, the TE is a lot like the Guhring diver, it sacrifices a lot of harmonic chatter reduction for stiffness which isn't exactly the best for a thin steel plate screwed down in a few places. Harvi 1 is by far the best tool for that sort of thing, fantastic little tools.

@mythattak 2 года назад

“Proven Cut”… what a great name! Super easy to remember, catchy, and informative! I’m gonna check it out right now…. Thanks John!

@travisguilbeau8404 3 года назад

I run Helical in 304/304L everyday, full slotting as well. Nothing beats them. I love their products.

@YoDaPro 5 лет назад

5:14 I'd still go to move in the other direction so the chips get blown out to the free space your creating with the slot. Same goes if you only have coolant from 1 direction. I had that on a job. Same recipe, one direction was fine but the other one (as in your vid) caused the tool to recut all the chips and break.

@douro20 5 лет назад

I really like Inco's hard-coated 4-flute mills for slotting and profiling tool steel. I used some at my first machinist job when I was making fixtures and I was very impressed by their performance compared to most other tools for hard metal milling.

@shaneprice2102 27 дней назад

Hey man how goes? I just got a new Haas mini mill and I am just a job shoo out of my garage. Can you please recommend a coolant to run? What would you use just starting out? Thanks for the videos. 👍

@rickfinsta2951 5 лет назад

Gaaaah! I had no idea you could search by EDP number in those tool libraries. You just saved me a ton of time!

@TimeWasted8675309 5 лет назад

I've found the dual head fogbuster works so much better for slotting if you throw away the stock bases and get the nozzles down low and pointing in towards the tool more horizontally, rather than the standard mounts that have the nozzle tubes up high and having the collet nut be in the way.

@lwilton 5 лет назад

You didn't try a multi-pass cut for a deep slot. In that case a longer flute length might be beneficial so that the chips can flow up the shank and out of the cut. I'd also be interested in the effect of a longer coolant pipe(s) that actually get down under the face of the collet or tool holder, right near the shank of the mill.

@kristianSilva95 5 лет назад

GREAT VIDEO! Super informative, clear to see how much of a difference flood coolant makes-great advert for proven cut too. More content like this please

@daffyf6829 5 лет назад

I'm a big fan of good solid endmill holders over the ER collets, especially for slotting as they are significantly more rigid. Also they have a smaller profile and are not as much in the way of the coolant. I am surprised you want to aim the coolant at the back of the cut. I always figured that would push chips into the cut rather than away from it. Also, have you considered a tip with a smaller hole on your coolant/fog buster nozzle to have a more direct and higher psi flow?

@OMY005 5 лет назад

I always use through spindle coolant to these types of jobs, no worries about where the coolant nozzle is pointing.

@tylergarza8695 5 лет назад

good luck getting through spindle in a tool that small.

@OMY005 5 лет назад

@@tylergarza8695 The tool doesn't need TSC holes in it, I just use ER collets that are sealed and have two holes for coolant, works great.

@tylergarza8695 5 лет назад

@@OMY005 oh, actually was not aware of this. Thanks. I"m studying cnc machining right now so i'm still learning some stuff haha

@frp1276 5 лет назад

@@tylergarza8695 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3SBF8O194WA.html

@chyraxion 5 лет назад

that last cut the coolant is also hitting the chuck holding it so it was gettin double blocked from being so low and the outside

@NTGInnovations 5 лет назад

John, what is the orange part around the fogbuster? What Coolant do you use with fogbuster and stainless steel?

@pcsmachineworks 5 лет назад

I would be curious to see what D.O.C. the tool can truly handle with TSC coming through the collet and around the tool.

@Jimmy-ry1sc 4 года назад

At 150% axial depth of cut w/ mist cooling you were at about 230 sim and tool broke. However, when you went to compare to flood cooling you reduced the feed to 178 sim and it worked. That is not a valid comparison; you should have run with the flood coolant at the same parameters.Also, you were using an end mill from Helical (one of the best) at around $30.00. These details are important to me. I think that cutter would have made it thru if the 178sfm were used. Great video!

@mjshorty19 5 лет назад

i mill 304 stainless plate, full slotting (profiling the outside of the part) .3125 deep with the Helical 4 flute 1/4" endmill at 400sfm and .0012ipt (6112rpm @ 29.33ipm) and get about 2 hours of in cut time out of it. not unhappy at all with it.

@extradimension7356 5 лет назад

This is very good ! (Really very good). Machine Advisor Pro doesn't seem to have a "Beast Mode" dial or button ?

@VMX42AUS 5 лет назад

Could you use a different tool holder? The ER20 collet shields the tool excessively...are there smaller diameter or tapered alternatives? As always thanks for the info!!!

@nyccnc 5 лет назад

For sure - ER16 is readily available for TTS

@OriginalJetForMe 5 лет назад

When are you gonna get a horizontal machining center? That's gotta be nice for chip evac.

@michaelsalvo8882 3 года назад

Super useful, concise, and well made video.

@BrilliantDesignOnline 5 лет назад

Multiple DOC passes? Would take longer, but better reliability?

@barrythompson8813 5 лет назад

Great real-world example (especially those damn slots :) !

@darkstareng 3 года назад

Superb video, thank you! I've learned so much!

@pavelcelis89 3 года назад

What if im cutting only shallow depth of cut? Can i increase the rpm and sfm? Im cutting 304 ss but depth per pass is .004" depth of cut.

@daverhin5975 3 года назад

I only have a hobby mill off of eBay for fun. Is it possible to mill steel with a 2 or 3mm end mill with only a max rpm of 2855rpm?

@ratherrelatablemantisshrim2409 3 года назад

how would you suggest adjusting these feeds for a ramped 2d contour toolpath? Or would it be better to plunge between stepdowns?

@johndennis3181 5 лет назад

Nice test, I see some serious tool deflection with the deeper cuts.

@detectorguy 5 лет назад

Can you try this with 316L Stainless....would like to know.

@iceman1982one 5 лет назад

Spindel cooling is a best way ! through tool holder .

@davidb2045 5 лет назад

In a straight slot like that how is chip evacuation a factor? It seems to me like there's no opportunity to recut chips in that situation. At least on my 1100 I've found I can slot without any air, in 6061 and 4130 at least.

@Bighorse508 5 лет назад

I nit pick all areas in my machine. Especially coolant placement. Feeds an speeds are pretty much standard cause I cut cobalt chrome. So you can't push the tool much faster. But flood coolant ia a must. Makes a huge difference.

@frp1276 5 лет назад

Why limit yourself to Cobalt?

@Bighorse508 5 лет назад

@@frp1276 limit? I work in a medical shop. I make implants. What am is supposed to use???

@frp1276 5 лет назад

@@Bighorse508 my mistake, I was thinking you are using only cobalt tools

@Bighorse508 5 лет назад

@@frp1276 na. Cobalt chrome is the material. Carbide tooling is all i use

@alejandroperez5368 5 лет назад

Is the toolpath used in cutting letters (signs company) from a steel sheet also considered as full slotting?

@dimman77 3 года назад

Can you tell them to update their App? The tool numbers from their website catalog aren't recognized in the App (Android). Waste of time.

@maxgreen6838 5 лет назад

Thank you very much, this was very educating.

@clarkmaq 5 лет назад

Great video John!

@dominic6634 5 лет назад

I usually just use a sfm of 125. Works great. Also do flood coolant

@gronno 2 месяца назад

I've got to cut some 1mm wide slots in 303 stainless, about 6mm deep blind at one end open at the other. Single flute carbide mill, I've no idea on speeds and feeds, any clues?

@chyraxion 5 лет назад

that fog buster got a leak maybe thats hurting the pressure?

@bryanrude8072 5 лет назад

This being a resent video why in Fusion 360 does it show a Cam operation and not Fusions Manufacturing op?

@advil000 5 лет назад

With either fogbusters OR flood, how about using smaller collets for the small tools to get more air or fluid to the edge? ER16 holders are available. I even have a pack of ER 11 collets in my drawer in case someone, sometime makes some TTS holders that can use them.

@GAMERGEBITER 5 лет назад

Metric Numbers please

@younglogin 5 лет назад

I would also like, I watched the whole video with calculator converting

@nicktaylor5819 5 лет назад

Hey jon do a review of the cogsill 80mm bernashing head

@alexbarnett8541 5 лет назад

I saw their sales video. Looks pretty cool. Expensive tool. I'd like to see it reviewed also.

@bcbloc02 5 лет назад

I use Cogsdill Bore burnishing tools often to produce awesome smooth, and tight bearing bores, I can only imagine that everything they make is top notch.

@kisspeteristvan 5 лет назад

It's easier for the flood coolant if you hold the tool in bit longer weldon holder |||==-- something like this :D

@knowthe2775 5 лет назад

Nice video

@multiHappyHacker 5 лет назад

I wish Helical sold their tools on MSC.

@BikiniDuckCreations 5 лет назад

Your fogbuster needs a bit of tuning and tightening up the connections. You can see it leaking through the orange housing.

@kenibnanak5554 5 лет назад

Ain't got no coolant capability. :(

@ipadize 5 лет назад

flood coolant was and is always better

@alexbarnett8541 5 лет назад

I thought this was a Titans of CNC video with that title. Just smashing a tool through a block of steel.

@nyccnc 5 лет назад

No.

@alexbarnett8541 5 лет назад

@@nyccnc no definitely not. That's not real life. 😂

@travisthomason8869 5 лет назад

I talked to the company that programed the impeller on your show about the guy from Canada on his DMU. They were at south tec this week. I now have a hard time believing your content now. You need to be real.

@frp1276 5 лет назад

?? Can you elaborate?

@travisthomason8869 5 лет назад

Sure. Amish said he used power mill to program the impeller in the video but just a few seconds later said he had been using fusion 360 for everything on the 5th axis. Which is it? In my conversation at south tec I learned fusion 360 at 500 dollars a year cannot make his impeller but with cloud credits you can use other autodesk tool paths. We don't see that on RU-vid from the autodesk users but that's what they have to do to replicate these programs. I'm pretty sure now that cloud credits don't come cheap and I'm pretty sure Amish paid for that program instead of generating it himself. Tell the whole story. That's all I'm getting at. I'd rather have the information than the marketing or the entertainment content. That content does not help manufacturers.

@frp1276 4 года назад

@@travisthomason8869 thanks

@bnoops123 4 года назад

Slotting 304 with 1/8? Don't do that

@kigara3906 5 лет назад

You are already using CAM software so why you slot with full A.O.C? Just use trochoidal milling. Its faster, more productive, less toolwear (smaller cutting forces, heat, better chip evacuation etc..), full depth of cut (4xD easily) and better accuracy. You dont even need CAM, program for simple trochoidal slotting isnt problem write manualy . I think its wasting of great mill to use just 1xD or 1,5xD and rest throw away or regrind. And cutting hard steels with cutting fluid isnt ideal. Mist would be better. ps: And excuse my bad english ;-)

@multiHappyHacker 5 лет назад

ehhh it's not usually faster imo..

@donaldmoore8023 5 лет назад

Yeah, it really depends on what doing and slot width/length. Trochoidal milling is great, but like every process, it has it's downfalls, like machines not being to handle the code so you end up cranking up the smoothing option and lose the accuracy benefit. Also, I would never take the time to hand program that, copy and paste NIGHTMARE in my opinion.