Rpm and Feed Rates

[Xeno]

Is there an Html Link (or freeware of somesort) that can allow you to input your differant conditions (Cutter #Flutes, Cutter material, stock material, side milling plunging, drilling or whatever)
and output a rpm and feed rate?
If not is there recommended software that specializes in this. I use Pro Manufacture.
I've obtained a Machinist Handbood (that is almost as thick as it is wide) but I don't have the patience for it. Maybe there is another text that is a bit more specialized in what I want.
Thanks
Tony

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[Mortek]

You might try getting hold of a Speeds and feed slide rule calculator. Iscar makes one that is really nice. All you need to know is your SFM, cutter dia, #flutes and all the calculating is done.

[E-Stop]

I started using a Shareware progam in 1995 that was written by Micheal Rainey called ME HELPER. Ironically 7 years I bumped into Michael on-line in a few of tthese forums. He has posted his updated version of the program at www. cnc masters unleashed.com for free downloading (leave out the spaces in the url). Just do a search for it there.

[ToyMaker]

Xeno:
There is a program called Machinist's Toolbox that has speed/feed calculations for many situations programmed in. They have a free Lite version. See it at:
http://www.ptcam.com/toolbox.html

robotic regards,

Tom

[sorincnc]

There is a really nice program out there alled "Machinist's Tool Box" written by Tim Markowsky. It has a library of materials that allows you to add or remove materials as needed. Tons of other features. I know people that have been using it for years and swear by it. You can contact me if interested and I can give you all details and prices.
Regards,
Sorin

[cadcam]

you can go to www.shopfloorautomations.com they offer the full blown "Machinist's Tool Box"you will also be able to see some of the features and screen shots of whats offerd..

If you want it I will see about getting a discount for being a CNCzone member.

Sorry about my miss posting folks I have restated the post to be proper for this board.

[sorincnc]

I have already talked to Tim and I can offer the discounted prices if interested. I wouldn't publish them here since this is not a place for soliciting busines....
Regards,
Sorin

[HuFlungDung]

Onecnc XP series software has exactly what you want. You do have to fill in the tool and materials chart one time, or I should say, edit it to suit your preference/experience.

[sorincnc]

Originally posted by HuFlungDung
Onecnc XP series software has exactly what you want. .

LOL LOL... HU This reminds me of the I love Lucy episode: "The answer to all your problems is in this little bottle- vitamina vegiman". Oh vell, we know what was in that bottle (or better yet, I KNOW who sels it.........) and I for one wouldn't buy it from him..
Best regards,
Sorin

[Paul_S]

I had made a few suggestions how this can be done in this post:

http://cnczone.com/showthread.php?<b...id=203#post739

I have used the Machinery Handbook 19th edition for many years. But I keep most of my calculations as simple as I can get away with. And to make it even simpler I had written for myself BASIC programs to do these calculations.

The 25th and 26th editions have information on also how to estimate feeds and speeds for tool life. Which I have found of interest. But have not at this time worked out a simpler way to do those calculations. So I haven't yet bothered.

Basicly the SFPM dictates tool life for the most part. As a rule of thumb so to speak, I suppose the 80% rule double the tool life.

Currently most feed and speed programs that I have seen ingnore tool length. My personal programs do not. Shorter tools can run faster than longer tools. And CAM package calcuations also ingnore changes in width and depth of cut in the calculations as well as horse power needed at the spindle for a given RPM.

So I am not real fond of the ISO9000 CAM requirements. Fortunately for me I am not under such restrictions when it comes to estmating feeds and speeds.

[Fish]

Hey Mortek,

I second Xeno's suggestion, but add that if you can't find an Iscar sliderule, Kennametal has one as well. The Kennametal version also calculates horsepower, force etc.

I created a spreadsheet in Excel using the basics from the sliderule, and inputting variables that are dictated by the job or machine, ie; material, tool, rpm's etc. I have been thinking of refining it to include force and horsepower to maximize the metal removal rate of my programs instead of just "that looks right".

Adam

[chleborad]

Hey,

Once of the first things I did when I started G code programming was sit down and write a tight little speed and feed calculator. One thing I did was make it so it stays on top of all the windows so you don't have to go looking for it everytime you want to use it.

Over the last few years I've imporved it and added tapping feed rate calcs, and drill point length calcs. Lately, I've been tweaking it up in order to market it for ultra low cost - anyone interested in beta testing?

[E-Stop]

I'm willing to help you test it and offer some feedback as needed. Good Feed/Speed calculation is essential to making good parts effieciently.

[Rekd]

Originally posted by chleborad
...Lately, I've been tweaking it up in order to market it for ultra low cost - anyone interested in beta testing?

I'll run it thru the wringer for you also.

'Rekd teh entomology

[hardmill]

Originally posted by Rekd
I'll run it thru the wringer for you also.

'Rekd teh entomology

Talk about team players
PEACE

[Paul_S]

I would not be adverse to beta testing.

I have written three different feed and speed calculators. The current ones (two) I use on a TI-86 calculator. And are for end milling.

I also have written some for tapping for calculated pull out. Those will run in Qbasic.

Also wrote for drilling, reaming, core drilling and spade drilling. But only the drill, reaming and core drilling have been transated to the TI-86.

A triangle solver that can be used to solve any triangle. That one can be downloaded from ticalc.org That is the TI-85 version. But will load and run on a TI-86.

My rough milling program askes for the following:

First you slect whether you will be making a linear cut, ID cut or OD cut.
(If ID or OD asks radius.)
Next asks for the material SFPM (Surface Feet Per Minute.)
Then it asks for a material cubic inch per horse power rating.
Then,
Side depth of cut.
Z axial depth of cut.

End mill diameter.
Lenght of flutes.

HSS or carbide.
Number of flutes.

Maxium spindle RPM.
Maxium feed rate.

Program gives calculated RPM.
Asks what the available horsepower at the spindle at that RPM.

The program then gives as output:
RPM
IPM
IPT

[chleborad]

O.K....

I have a release package ready to go. People who are interested should send and email to:

CNC@Chleborads.com and I will reply with a link to the download location.

Thanks

[M@T]

Speed/feed calculators, bwhahahaha.

I just make it up as I go along

[Rekd]

Originally posted by M@T
Speed/feed calculators, bwhahahaha.

I just make it up as I go along

+1

If it's screamin', crank it up. If it breaks, back 'er off.

'Rekd teh Destroyer

[HuFlungDung]

LoL, keep the chip thickness less than the cutter radius and you'll be okay, Matt