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G-Code, CAD, and CAM discussions / Re: Speeds & Feeds, in CAM Packages and calculators
« on: January 28, 2014, 05:42:08 PM »
Hello,
I accidentally stumbled upon this post.
I am Eldar Gerfanov - the maker of above mentioned calculator.
I am a professional CNC Programmer and machinist.
Thank you Nick for getting the word out.
I would like to just say that my calculator is not just looking up material specific cutting speed and chipload, puts it into the old 4x sfm/dia formula and spews out result that has no relation to real world conditions.
Yes it does that too, but in between it estimates deflection of the cutter and torque, checks those numbers against practically found values and warns the user about possible cutter breakage.
It also suggests depth/width of cut in relation to the workpiece material/tool type beimg used.
I beleive it is very much of an approach that an engineer would like to take.
The main advantage of using a calculator is consistency of results.
If some parameters are getting you better tool life than others, you can just save them for future re-use.
Yes doing things experimentally will get you results where your endmills would not break anymore, but how many tools would one have to go through to get the same results?
I personally know many people who have "figured out" their speeds and feeds and have been doing things wrong for the past 20 years.
Opinions?
I just hope this topic generates some feedback. I need to get input from as many people as i possibly can.
I accidentally stumbled upon this post.
I am Eldar Gerfanov - the maker of above mentioned calculator.
I am a professional CNC Programmer and machinist.
Thank you Nick for getting the word out.
I would like to just say that my calculator is not just looking up material specific cutting speed and chipload, puts it into the old 4x sfm/dia formula and spews out result that has no relation to real world conditions.
Yes it does that too, but in between it estimates deflection of the cutter and torque, checks those numbers against practically found values and warns the user about possible cutter breakage.
It also suggests depth/width of cut in relation to the workpiece material/tool type beimg used.
I beleive it is very much of an approach that an engineer would like to take.
The main advantage of using a calculator is consistency of results.
If some parameters are getting you better tool life than others, you can just save them for future re-use.
Yes doing things experimentally will get you results where your endmills would not break anymore, but how many tools would one have to go through to get the same results?
I personally know many people who have "figured out" their speeds and feeds and have been doing things wrong for the past 20 years.
Opinions?
I just hope this topic generates some feedback. I need to get input from as many people as i possibly can.