badvibes
Mechanical
- Nov 21, 2004
- 6
I am in the process of designing a high speed rotary surgical hand-piece (drill). The hand-piece must be a DC motor (brushed or brushless). The specifications of the hand-piece are as follows:
1)0 - 45,000 rpm (variable speed)
2) ozf-in torque through-out entire speed range
3)battery source to be disposable or rechargeable can be thrown away if cost is low enough
4)Duty cycle is 5 one minute cycles (1 minute on, 1 minuteoff)
5)DC motor must be apporximately 3/4" in diameter
6)Battery source to accomodate the current drain and supply proper voltage for speed
My question are:
1) Can anyone refer me to a good website for the motors?
2) Is this possible to do with a brushed motor or do I need to go brushless with an electronic control
3) Can anyone recommend a method of benchtop testing for current drain while a torque is applied to the motor?
Thanks in advance for your help.
~Bob
1)0 - 45,000 rpm (variable speed)
2) ozf-in torque through-out entire speed range
3)battery source to be disposable or rechargeable can be thrown away if cost is low enough
4)Duty cycle is 5 one minute cycles (1 minute on, 1 minuteoff)
5)DC motor must be apporximately 3/4" in diameter
6)Battery source to accomodate the current drain and supply proper voltage for speed
My question are:
1) Can anyone refer me to a good website for the motors?
2) Is this possible to do with a brushed motor or do I need to go brushless with an electronic control
3) Can anyone recommend a method of benchtop testing for current drain while a torque is applied to the motor?
Thanks in advance for your help.
~Bob