How to figure out Metric speeds and feeds etc

[kevh]

Hi Everyone ,


I am fairly new to basic milling principles let alone cnc so any added more realistic speeds and feeds would be fantastic and any info on how to tell whether or not a tool is to fast to slow , depth of cut etc due to swarf shape noises etc??
eg 8mm dia in "01" carbide 4 flute tool??


( have tried ME consultant which is good , but doesnt give "Aisi 01" cut rate and not quite sure which rates are which?)

(using "XR2 Mill avantage" on Haas TM1 very very good especially for beginners like me as well as the experts! )

Happy Christmas Everyone!!!!!!!!!!!!!


Cheers Kev

[mrainey]

Hi Kev,

What is "Aisi 01" cut rate? If you tell me precisely what you need, maybe I can figure out a way to help.


Mike (ME Consultant developer)

[HuFlungDung]

Kev
When I made up my tool list (in Imperial inches), what I kind of gathered from browsing much manufacturer information, is that for standard finishing endmills, the chipload per tooth seems to be .0001" per 1/64" of tool diameter. Obviously, this translates into .0064" feed per tooth on a 1" endmill.

Now in metric, the equivalent sort of factor would be .0064mm chipload per mm of tool diameter. I suppose you could round that up or down a bit for convenience sake.

That would be for a standard length endmill, used primarily in a semi-roughing or roughing application (although real roughers can be quite a bit more aggressive).

For profile finishing, you pretty well want to control the interval between flute cuts down to a lesser capacity than the tool can actually deliver, because your primary concern is the scallop of the surface. In my imperial list, I made an attempt to introduce this factor with a repetitive formula which I applied, based on tool length (long, extra long). If you download my list, you can fire it up in "inch mode" in OneCNC and take a look at the relationships.

If you make one up over the Christman holidays, I guarantee that you won't experience holiday blues.....you won't even experience a holiday, period

[kevh]

Hi Hu and Mike

Thanks for your replies Firstly Aisi 01 is also known as Gauge plate , Fmp200 , Kea 672 , k460 , Arne etc.

I realise a full comprihensive list is a large task and i assume your imperial list Hu is made up through experience of using cnc , and a metric one needs to come from someone as generous as yourself from the "Metric" team.

PS when i am fed up with cold turkey over the christmas holiday i might start my own list in the garden shed away from the wife and kids for a week or three!!(I wonder if theyll notice???)

Cheers Kev

[mrainey]

I'd like to help, but am totally clueless about that terminology.

[kevh]

Hi mike

Material is just common hardenable tool steel commonly sold in various stock sizes , dont know how else to describe AISI "01" (Ground Flat Stock)...

Cheers Kev

[mrainey]

I'd suggest you first evaluate the values furnished in ME Consultant for H13 tool steel. If they need to be modified, the procedure for adding and/or customizing material data is thoroughly explained in the User Guide - it's easy to do with any text editor.

ME Consultant Professional has a graphical interface for adding or modifying material data, even easier and more powerful.

[wms]

AISI O1 is Oil hardening tool steel..

http://www.matweb.com/search/Specifi...p?bassnum=SO1A


This might help..no machining data..but a Chem analysis..

[championp]

I recommend to any beginner (or many experienced) machinists/engineers to purchase Machinery's handbook from Industrial Press inc. I have only used the imperial version, but I bet they have a metric version as well. I will not lie it is an expensive book, or cd-rom. about 100 us dollars. But it covers just about everything you could think of.


Chris

[mrainey]

Machinery's Handbook is $53.55 at Amazon
$62.97 for large-print edition (what my old eyes need)

Both are brand new with free shipping

[NC Cams]

AISI = American Iron & Steel Institute.

01 = grade/type of steel

There are 0's, W's, H'ss M's, T's and many others. Each is a general tool steel type that is used for a specific purpose.

Check out and page mark the following for applications and trade name to AISI equivalency:

www.varcoprecision.com/varco.xls

http://www.pvsteel.com/docs/Tsb-093.pdf

You don't have to know all the answers but if you know where to find them, you're half way there.....