The Shop > Electronics & IC Programing
Power feed motor suggestions?
websterz:
I want to uncouple the leadscrew on my 7x12 from the gear train and run the power feed from a separate motor. I don't thread and want a variable power feed. I am not sure how much torque I will need, I just know I want something in a 12VDC gear motor that I can run on a PWM motor control. Any help would be appreciated. :zap:
Oh yeah, the physically smaller the motor the better. :thumbup:
mklotz:
Automotive window or windshield (windscreen) wiper motor?
12V electric screwdriver? (I use one as a crude power feed on my Unimat.)
John Hill:
The hobby shops sell 12V DC motors and matching planetary gear reduction boxes (same format as a power screw driver). As well as the car windscreen, etc, motors I would be looking at knackered battery drills many of which are scrapped because the battery is shot but usually the drill itself is in good order and only needs a couple of wires to your DC supply.
One clear advantage of the windscreen wiper motor is that they are already highly geared down usually via a worm and wheel.
John Rudd:
I'm currently adding a power feed to my mini mill using a wiper motor from a Ford Fiesta/Escort....I'm using a Velleman pwm controller built form a kit to provide speed control....
I'll add some snaps later
Weston Bye:
I just added a Nema 23 stepper motor to feed my Sherline lathe. That, a Geckkodrive controller and a 555 variable oscillator completes the package. Though more pricey than a DC motor and PWM, the feedrates are rock solid stable unless the load is greater than the stepping torque. A DC motor will vary in speed with even subtle changes in load, unless operating with some sort of feedback.
The stepper feed on my lathe is part of a larger electronic threading project, but I am sure that the power feed will see more use in ordinary turning than in threading. I love it!
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