![]() |
#1
|
|||
|
|||
How much Torque is required when cutting?
I hope I am asking this in the right section but here we go.
I am looking at the Keling KL34H280-45-8A Stepper Motor, http://www.kelinginc.net/KL34H280-45-8A.pdf http://www.kelinginc.net/KL34H280-45-8AT.pdf I am still in the planning stages but I would like to do a 3.1 to 1 belt drive with a 20 tooth pinion. If I have done my math right I should end up with a almost 1:1 with the steppers rpm and 3 times the torque at rated speed. Now for a few numbers, I would have Stepper RPM-------Stepper Torque-- Pinion Torque--Table Speed(est) 150rpm------------594oz------------1841oz--------150ipm 300rpm------------580oz------------1798oz--------300ipm 600rpm------------509oz------------1577oz--------600ipm 900rpm------------410oz------------1271oz--------900ipm 1200rpm-----------311oz------------964oz---------1200ipm 1500rpm-----------254oz------------787oz---------1500ipm 1800rpm-----------198oz------------613oz---------1800ipm This was all caculated from the torque/speed chart. My question is will the torque and speed meet the Mechmates need with the above setup? I have never cut at a significant speed and dont have a clue what is required for cutting. Would anyone object to this stepper motor and setup. In my mind it sounds good but then again what do I know. Last edited by Regnar; Sun 10 January 2010 at 17:15.. |
#2
|
|||
|
|||
Consider that a 20 tooth pinion which has a 20 diametral pitch has exactly a half inch radius. Therefore, a 613oz.in torque on a 20 tooth pinion is going to give you 1226 ounces of linear "pushing" force at the cutter, which is 76 pounds, which is plenty for a typical bit in a hand pushed router.
|
#3
|
|||
|
|||
I have the 640 oz Keling steppers, with beltdrives. no problems so far and I am very happy with them.
|
#4
|
|||
|
|||
Leo, are you running them 3 to 1 or are you doing a different setup. Thanks guys for the responses. I feel very comfortable with the mechanics but unsure of the electronics that need to be put in. Thanks again. Russell
|
#5
|
|||
|
|||
Yes, I am using the 3 to 1
|
#6
|
|||
|
|||
Why beltdrives?
So, why do you use beltdrives in your machines?
I now build my 1mx2m cnc and I have 640oz-inch steppers with G203 and ballscrew 2510 and I plan to put them directly to ballscrews....If I put belt drive I will have decreased speed right?I do not want to decrease the speed... Will I have any problem with this? Kostis. |
#7
|
|||
|
|||
Kostas, this forum generally only handles the specific MechMate machine design.
The answer to your question is that the MechMate uses rack and pinion, and thus gearing/belting down the motor makes sense. With a ballscrew, it wouldn't, since the ballscrew naturally does that. Whether you will have problems is a question for another forum, I think. Good luck with your build. |
#8
|
|||
|
|||
Ok sorry then,
thanks for clearing this out Bradm... Good luck to you too... ![]() |
#9
|
|||
|
|||
Quote:
![]() ( Im a Mach3 and G203 person.) The reason why is simple I decided to go "THAT path - G540 and Linux" on one of the slanted machines I´m building ![]() I know that its a learning curve on everything new thing you have to learn, so " Lets Start NOW!! " ![]() If you wounder in what build it will apear etc..Its this machine you can see grow in this moment taking its shape in my building three below. http://mechmate.com/forums/showthrea...7&postcount=25 Feel free to answer either in the three above or here ! So if you have same advice or what to avoid etc or likewise let me know. /oopz |
#10
|
|||
|
|||
Quote:
Edgar |
![]() |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Drawing problems and revisions required, considered and intended . . . . . | Gerald D | General - MM Build | 55 | Sat 23 March 2013 05:48 |
Flexible Hose required in India | DMS | 55. Dust Management | 9 | Wed 16 September 2009 06:22 |
Same torque, different sized frame | chrisd7306 | Motors & their mountings | 5 | Wed 19 November 2008 02:25 |
Required Torque for possible upgrade ?? | boutzo869 | Archives | 4 | Wed 22 October 2008 08:04 |
How many laser profile cut components required per part number? | fabrica | Profiled (laser cut) & bent steel plate | 29 | Mon 07 January 2008 12:32 |