paper: Feet Per Second / Misc Calculations [Archive]

chris L

21-09-2008, 14:31

Thread created automatically to discuss a document in CD-Media.

Feet Per Second / Misc Calculations (http://www.chiefdelphi.com/media/papers/2165?) by chris L

vivek16

21-09-2008, 14:32

WooHoo! Nice and Simple, I like it. This will come in handy, I hate getting out my calculator or dealing with chunky spreadsheets everytime I need to make a few calculations.

thanks, Vivek

Anna B.

21-09-2008, 15:00

Thanks for developing such a simple tool for doing those kinds of calculations, it will definitely come in handy a lot!

-Anna

vivek16

23-09-2008, 21:27

w00t!, gear pitch calculator for the win. I love these updates keep em coming.

-Vivek

chris L

23-09-2008, 22:46

Updated Calculator:
-Added Quick Clicks for Motors, Reduction and Wheels

Added Gear Spacing Calculator
-Simply put in the pitch of 2 gears and it will put out 3 different types of fits

Any Comments and Improvements are appreciated.

vivek16

23-09-2008, 22:47

Is anybody interested in writing a simplified version of this program for TI84 calculators?
That would be awesome to use.

thanks, Vivek

p.s. sorry I'm posting so much, Chris is using me as his guinea pig and I really find this thing useful. It cut my drivetrain design time from 5 min. to about 5 sec. :D

JVN

24-09-2008, 00:47

Hi Chris,
This looks like it could be a good resource for some quick calculations. I haven't had time to check your math, but it seems reasonable off the top of my head.

If there was one thing to criticize it is your presentation. There were some things you did which confused me a little bit. Maybe it is because I read into things too much due to my familiarity with this material. Some of your terminology is also a little confusing. Nothing that some massaging can't fix.

Overall good job! The best part about this sheet for me, is the lessons that YOU must have learned while creating it. It takes a certain familiarity with the math behind these concepts to create something like this. Kudos to you for taking the time, it will certainly serve you well in the future. I hope you continue to evolve & improve your sheets, because as we all know, design IS an iterative process.

Kudos!
-John

R.C.

24-09-2008, 00:49

I second the calculator thing, but could anyone write it for the TI89's please??

chris L

24-09-2008, 06:38

Hi Chris,
This looks like it could be a good resource for some quick calculations. I haven't had time to check your math, but it seems reasonable off the top of my head.

If there was one thing to criticize it is your presentation. There were some things you did which confused me a little bit. Maybe it is because I read into things too much due to my familiarity with this material. Some of your terminology is also a little confusing. Nothing that some massaging can't fix.

Overall good job! The best part about this sheet for me, is the lessons that YOU must have learned while creating it. It takes a certain familiarity with the math behind these concepts to create something like this. Kudos to you for taking the time, it will certainly serve you well in the future. I hope you continue to evolve & improve your sheets, because as we all know, design IS an iterative process.

Kudos!
-John

What was it that confused you?

If you get back to me ill have a new version up soon with the updates

Thanks!

--Chris

Ken Patton

24-09-2008, 12:16

Hi Chris-

Nice! This looks like a couple of good resources for people who are speccing out their drive systems. Your ~0.9 factor for what the actual speed of the CIM is a decent estimate for the general case, I think.

I think one of the great parts of this is your careful attention to what units are being used at each step of the process.

I agree with John's thought on making it as clear and understandeable as possible. You can never stop making it easier to use.

Not that these ideas would make it easier to use (probably the opposite :)) but how about at the important parts of the calculation having a link which describes the calculation that is going on behind the scenes? Or how about a couple of plots showing the results that got generated (top speed versus gear ratio, for example). How about a pushing force calc?

Keep up the great work,
Ken

chris L

24-09-2008, 12:21

Hi Chris-

Nice! This looks like a couple of good resources for people who are speccing out their drive systems. Your ~0.9 factor for what the actual speed of the CIM is a decent estimate for the general case, I think.

I think one of the great parts of this is your careful attention to what units are being used at each step of the process.

I agree with John's thought on making it as clear and understandeable as possible. You can never stop making it easier to use.

Not that these ideas would make it easier to use (probably the opposite :)) but how about at the important parts of the calculation having a link which describes the calculation that is going on behind the scenes? Or how about a couple of plots showing the results that got generated (top speed versus gear ratio, for example). How about a pushing force calc?

Keep up the great work,
Ken

Thanks i am planning on making it a lot more user friendly and hopefully eventually make it have a nice interface.

I will put up a page on how i make these calculations so if i made a mistake you can check my math.

Im currently writing up some rough very rough calculations in excel to calculate acceleration, and how much pushing power you will have (with rough top and wedge top) and eventually make it into a web page.

Thanks

--Chris

chris L

24-09-2008, 21:16

Update

Added updated calculator allowing to do real time updates for final FPS when you change one of the Gearboxes or Wheels using the Presets.

Added a "How To" for doing FPS

Any Questions or comments are appreciated

--Chris

chris L

27-09-2008, 17:10

Update

Added a "How To" for using the FPS calculator

any suggestions for improvements would be appreciated

--Chris

chris L

29-09-2008, 00:21

Update

Added:
Get your Reduction for desired FPS

Put in:
-your Desired Feet Per Second
-your motor RPM
-your wheel size

and it will generate your reduction required to get your desired FPS

--Chris

R.C.

29-09-2008, 00:56

Chris, these are becoming more and more useful. I was wondering, are you gonna put this in an all in one package???

chris L

29-09-2008, 06:43

Chris, these are becoming more and more useful. I was wondering, are you gonna put this in an all in one package???

I was thinking about that before but i wanted to keep them in separate files just for ease of finding them but once i find i have them pretty much how i want them i will upload them in a .zip file so you only have to download 1 file for all the calculators and "How To's".

Thanks

--Chris

vivek16

29-09-2008, 08:02

Yep, I don't think they're done yet. It wouldn't make sense to put them together until they were all perfect. :)

-Vivek

chris L

02-10-2008, 16:33

Update

Fixed some of my math in the quick calcs.

If anyone would like me to add any motors or gearboxes as quick clicks let me know and i will put them up.

Please provide either specs on the product or a link for it.

Thanks

--Chris

chris L

05-10-2008, 21:57

Update

Added - Rotary Joint Gearing Design Calculations inspired by JVN's calculator

Note: when using make sure you click the button in order starting with:
-Calculate
-Pre Calculate
-Calculate Initial
- Final Calculate

Questions and Comments are recommended and would be appreciated

--Chris

chris L

10-10-2008, 23:03

Update

Fixed Rotary arm allowing it all to be done with a single button.

Added Drivetrain FPS / Specs

They both were Inspired by JVN's Calculator

More to come

Please let me know what motors you would like in these calculators along with gearboxes reduction and wheel sizes.

Thanks

Questions and Comments are appreciated

--Chris

chris L

11-10-2008, 19:25

Update

Added:
-Linear Motion calculator
-Drivertrain V1.0 FPS / Spec
Fixed Drivetrain
Pushing power does not work properly right now

I am going to add motors and gearboxes into these i need to know which motors and gearboxes you would like let me know and i will have them in the next update

--Chris

AdamHeard

11-10-2008, 19:44

Update

Added:
Linear Motion calculator

I am going to add motors and gearboxes into these i need to know which motors and gearboxes you would like let me know and i will have them in the next update

--Chris

I suppose the common COTS gearboxes and KOP gearboxes would be good. The AndyMark line (and combinations in them. IE: AM planetary to stackerbox, to toughbox, etc...), banebots, KOP FP gearbox, globe gearbox, etc...

vivek16

14-10-2008, 00:06

Maybe you could make custom gearbox calculator? With the different gears, etc. Also, compiling some white papers and explanations might be helpful to rookies. I would be glad to write a few of them :) I had a hard enough time finding all of this info. (CD helped me a great deal).

I'm hoping this might become kind of like that CD/DVD set miss daisy sends too rookies but for mechanical info.

-Vivek

chris L

19-10-2008, 18:47

Update

Added: Intake Gearing Calculator "inspired by JVN's calculator"

Any ideas to make it easier to use or any motors/gearboxes you would like added please let me know and ill add them to the next update.

Thanks

--Chris

chris L

22-10-2008, 17:38

Update

Added a .zip file with all the calculators in it.
open the file "Open Me.html" and chose you calculator

Any comments on this would be appreciated.
any other calculations you do often and would like a calculator for let me know and ill write one up.

Thanks

--Chris

XXShadowXX

23-10-2008, 16:53

downloaded it to my harddrive...thanks

chris L

26-10-2008, 19:55

I took a few days off from working on these calculators and i can't think of any other calculators to help out during the build season.

If anyone can think of another calculator that would be helpful during build let me know and ill write one up.

And my current calculators if anyone has and suggestions for them let me know and ill try to make them better.

Thanks

--Chris

R.C.

27-10-2008, 00:38

Hey dude, could you create a feed and speed calculator for CNC machining.

Including imput

Motor HP (if possible)
Material
Cutter Flutes
Type of cutter
Cutter diameter
Cutter Material

Output

Spindle Rate and Feed
Feed per tooth

Cory

27-10-2008, 02:54

Hey dude, could you create a feed and speed calculator for CNC machining.

Including imput

Motor HP (if possible)
Material
Cutter Flutes
Type of cutter
Cutter diameter
Cutter Material

Output

Spindle Rate and Feed
Feed per tooth

You can find charts and even some basic calculators through Google.

At any rate, chipload is an input, not an output, and you need SFM as an input as well. As it stands, with the variables you have given, you can calculate neither a spindle speed nor a feed rate.

R.C.

27-10-2008, 02:55

You can find charts and even some basic calculators through Google.

At any rate, chipload is an input, not an output, and you need SFM as an input as well. As it stands, with the variables you have given, you can calculate neither a spindle speed nor a feed rate.

Corey, I found some but they were off. Could you post a link of a good one/one that works well.

chris L

27-10-2008, 06:56

Hey dude, could you create a feed and speed calculator for CNC machining.

Including imput

Motor HP (if possible)
Material
Cutter Flutes
Type of cutter
Cutter diameter
Cutter Material

Output

Spindle Rate and Feed
Feed per tooth

I have tried making a calculator for this but i found there are to many variables that can change how fast you can actually go. big one being is the tool sharp. For the machines we have at my school I just remember which feeds to use. If you found me a resource for how to get it then i could probably do it but myself i do not know how.

--Chris

R.C.

27-10-2008, 10:03

I'll send some info that way.

AndyB

27-10-2008, 11:04

I'm just playing with it for the first time right now. I really love your gear spacing tool. This is going to be very useful.

Here's my wishlist

-Add Ability to use multiple gearboxes in a single reduction
-Add AM Planetary Gearbox to list: http://andymark.biz/am-0002.html
-Add Banebots P80 Gearboxes to list: http://banebots.com/c/P80A-nnnn-n0n5-Rn
-Add # of Motors per Gearbox and # of Gearboxes option to Rotary Joint, Intake, and Linear

I might think of something else.

Thanks a lot for doing this.

chris L

19-11-2008, 15:49

Update "chris L calcs V1.0"

Added a drop down menu for each stage of reduction to have a different gearbox at each step.

Added AndyMark Planetary Gearbox.

Questions and Comments are appreciated.

Thanks

--Chris

chris L

08-12-2008, 20:49

Update:

Added:

Andymark GEM500 (Base/ 2 Stage/ 3 Stage/ 4 Stage)
Toughbox optional ratio 1/2

--Chris

chris L

21-12-2008, 17:58

Update:

Added-
Dewalt 3 Speed Transmission all 3 speeds

If you have any other gearboxes or motors you would like added to this let me know asap and i will add them.

I will update as you request motors or gearboxes.

I plan on a final update (i will probably make a new paper for it) either January 3rd in the evening or the 4th sometime during the day with new motors / gearboxes (if any) .

Thanks

--Chris

chris L

31-12-2008, 14:30

Update:

Added-

Misc gear calculations

If anyone has requests for calculators or changes in my current ones let me know.

Once build starts i will be releasing one either on Saturday or Sunday and that will be it for the season so if you want anything added let me know now.

Thanks

--Chris

chris L

30-04-2009, 18:32

Hey everyone, hope you all had a great FRC season.

Now that the Official season is over i'm going to try to start working on my calcs again the only thing is i don't know what needs to be changed, so if you have anything you would like me to work on let me know and i will gladly work on it.

I'm up for any suggestions for modifications to the current calcs and open for any requests for new ones.

Thanks

--Chris