Speed and feed calculator.

[Bruce Caulley]

I have just started playing with the s&f calculator and cannot get a feed rate. Spindle speed calcs work fine, but no matter what values I enter for material etc, I get a feed rate of 0.

????????

Bruce

[robk]

In all the years that I used Mastercam, I have never really had good luck with calculating speeds & feeds. Try this link for Cimco Speed & Feed. I like mastercam to get that info from tool and not the material. Than the tool libraries could be saved according to the material you're using. Less foolproof? It's been working for me. HTH

[sike]

I think i might give that a go as well we had an expensive experiment sesion on saturday with the feeds and speed on 4140 and still ended up having to go slower then we would have liked just to get tool life.

[Teh Bear without Brains kinda idiot]

I made separate custom tool libraries for different materials and never use calculator and would never trust this important task to any calculator ,even the best .

I prefer to set them myself (BTW ,they can be specific to tooling ,flute geometry ,rigidity of setup ,machime ,machine power and more ,more ,more ...)

[Code_Breaker]

I use the Cimco Speed and Feed calculator with the book, Machining Data Handbook, 3rd ed. (vol 1). Then I look at the cutter paths, machine, and method of holding. I make any adjustment from there, purely based on experience and gut feelings

 

Just my thoughts . . .

 

Code_Breaker

[Bruce Caulley]

Thanks for your replys,

[Bruce Caulley]

Thanks for your replys,

What I am actually trying to do is generate a new set of tool libraries specifically for some ongoing work with dedicated tooling and known material qualities, without needing to add in all of the figures manually. I know that calculated speeds and feeds are never accurate, but the problem is that the feed function does not seem to be working on my system. Are there any switches or configs that need to be altered.

[Teh Bear without Brains kinda idiot]

In job setup the setting must be feed calculation -> calculate from material with selected proper material

 

HTH

WTHH

[Bruce Caulley]

Thanks,

[Bruce Caulley]

Thanks, but it didn't work. FPT is set at 0.2mm and % is at 100 and still nothing. We have MC on a couple of seats and no-one can get f&s to work. Is it a metric thing?

[Storkman]

try going out of the tool properties then come back in and hit recalc. I have to do this to get it to work.

[Bruce Caulley]

Got it!!!!!! I redefined some materials and the calculator works on these but not on the old ones. Values are all the same so I must have a gremlin somewhere.

[Bruce Caulley]

I spoke too soon. Feedrates do not match what they should be. eg. surface speed 100m/min feed per tooth per rev .1, diameter 3mm, flutes 2. All over-rides set at 100%. Should be something like 10600rpm and 2100mm/min.

output from speed and feed calculator is 20000rpm and 24mm/min. Max spindle is set at 20000. What am I doing wrong??? Can the formula be manipulated in mastercam somehow??? This has become a bit of a personal crusade to get this working whether I end up using it or not.

 

Bruce

[mayday]

Oh wouldnt it be nice, seeing most tooling charts are based on SFM and chip per tooth. simple calculation,I wish the tool parm. page had that function. good luck to ya. sounds like your on a mission

[Bruce Caulley]

Maybe I should just wait for X