Home |
Search |
Today's Posts |
|
Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to rec.crafts.metalworking
|
|||
|
|||
Combining an electro mechanical joint
Hello everyone, i need help at this:
I want to make a joint like in the human arm and make it work in certain behavior. so, i know i need a stepper motor controlled by microchip like PIC16F1825 and attached to the mechanical joint. but what i need to know: 1- what kind of motor to use (how much KG can raise, the price, ...etc ) 2- what kind of joint 3- how should they attached to each other Thanks a lot to every one helped me... |
#2
Posted to rec.crafts.metalworking
|
|||
|
|||
Combining an electro mechanical joint
--A good place to start for all of the above:
http://www.carlpisaturo.com/Slave_MAIN.html -- "Steamboat Ed" Haas : Steel, Stainless, Titanium: Hacking the Trailing Edge! : Guaranteed Uncertified Welding! www.nmpproducts.com ---Decks a-wash in a sea of words--- |
#3
Posted to rec.crafts.metalworking
|
|||
|
|||
Combining an electro mechanical joint
You don't want to use a stepper motor. You lose far too much torque and waste far too much energy stopping and holding. Think PM
motors with pulse width modulation to vary torque and speed. You must use feedback with a position encoder (absolute) and a tachometer. Depending on the gear set used, you may also wish to use an armature shaft brake. Steve wrote in message ... Hello everyone, i need help at this: I want to make a joint like in the human arm and make it work in certain behavior. so, i know i need a stepper motor controlled by microchip like PIC16F1825 and attached to the mechanical joint. but what i need to know: 1- what kind of motor to use (how much KG can raise, the price, ...etc ) 2- what kind of joint 3- how should they attached to each other Thanks a lot to every one helped me... |
#4
Posted to rec.crafts.metalworking
|
|||
|
|||
Combining an electro mechanical joint
On 1/4/2011 8:35 AM, Steve Lusardi wrote:
You don't want to use a stepper motor. You lose far too much torque and waste far too much energy stopping and holding. Think PM motors with pulse width modulation to vary torque and speed. You must use feedback with a position encoder (absolute) and a tachometer. Depending on the gear set used, you may also wish to use an armature shaft brake. Steve wrote in message ... Hello everyone, i need help at this: I want to make a joint like in the human arm and make it work in certain behavior. so, i know i need a stepper motor controlled by microchip like PIC16F1825 and attached to the mechanical joint. but what i need to know: 1- what kind of motor to use (how much KG can raise, the price, ...etc ) 2- what kind of joint 3- how should they attached to each other Thanks a lot to every one helped me... you need to determine how fast you want it to move - how much weight to lift, holding reqmts, etc - hydraulics are frequently used, but if motion doesn't have to be too snapy a piezo motor provides high holding torque and is light/small |
#5
Posted to rec.crafts.metalworking
|
|||
|
|||
Combining an electro mechanical joint
On Jan 6, 9:04*am, Bill Noble wrote:
On 1/4/2011 8:35 AM, Steve Lusardi wrote: You don't want to use a stepper motor. You lose far too much torque and waste far too much energy stopping and holding. Think PM motors with pulse width modulation to vary torque and speed. You must use feedback with a position encoder (absolute) and a tachometer. Depending on the gear set used, you may also wish to use an armature shaft brake. Steve wrote in message .... Hello everyone, i need help at this: I want to make a joint like in the human arm and make it work in certain behavior. so, i know i need a stepper motor controlled by microchip like PIC16F1825 and attached to the mechanical joint. but what i need to know: 1- what kind of motor to use (how much KG can raise, the price, ...etc ) 2- what kind of joint 3- how should they attached to each other Thanks a lot to every one helped me... you need to determine how fast you want it to move - how much weight to lift, holding reqmts, etc - hydraulics are frequently used, but if motion doesn't have to be too snapy a piezo motor provides high holding torque and is light/small Thank you for your time. i want the motion to be smooth, and the motor must endure weight 1 KG as a maximum. the main problem is in the connection between the motor and the joint. |
#6
Posted to rec.crafts.metalworking
|
|||
|
|||
Combining an electro mechanical joint
lot to every one helped me...
you need to determine how fast you want it to move - how much weight to lift, holding reqmts, etc - hydraulics are frequently used, but if motion doesn't have to be too snapy a piezo motor provides high holding torque and is light/small Thank you for your time. i want the motion to be smooth, and the motor must endure weight 1 KG as a maximum. the main problem is in the connection between the motor and the joint. so, try reading about them - start here http://www.sensorsmag.com/sensors/acoustic-ultrasound/an-introduction-piezoelectric-motors-1076 |
#7
Posted to rec.crafts.metalworking
|
|||
|
|||
Combining an electro mechanical joint
On Fri, 7 Jan 2011 11:25:51 -0800 (PST), "
wrote: On Jan 6, 9:04*am, Bill Noble wrote: On 1/4/2011 8:35 AM, Steve Lusardi wrote: You don't want to use a stepper motor. You lose far too much torque and waste far too much energy stopping and holding. Think PM motors with pulse width modulation to vary torque and speed. You must use feedback with a position encoder (absolute) and a tachometer. Depending on the gear set used, you may also wish to use an armature shaft brake. Steve wrote in message ... Hello everyone, i need help at this: I want to make a joint like in the human arm and make it work in certain behavior. so, i know i need a stepper motor controlled by microchip like PIC16F1825 and attached to the mechanical joint. but what i need to know: 1- what kind of motor to use (how much KG can raise, the price, ...etc ) 2- what kind of joint 3- how should they attached to each other Thanks a lot to every one helped me... you need to determine how fast you want it to move - how much weight to lift, holding reqmts, etc - hydraulics are frequently used, but if motion doesn't have to be too snapy a piezo motor provides high holding torque and is light/small Thank you for your time. i want the motion to be smooth, and the motor must endure weight 1 KG as a maximum. the main problem is in the connection between the motor and the joint. http://www.rocomcorp.com/ One of my clients. Helical coupler manufacturer Gunner -- "You can have peace. Or you can have freedom. Don't ever count on having both at once." Robert A. Heinlein |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Mechanical Vs Electro Magnetic Advantage | Metalworking | |||
Electro-mechanical carousel | Electronics |