The length of the screw rod is 76, the length of the motor is 22, and the stroke is about the length of the screw rod - the length of the motor:
76-22=54mm
The longer the screw rod, the longer the stroke. The shorter the screw rod, the shorter the stroke.
How long is the travel of this motor? If we make the lead screw longer, will the travel be longer?
Drawing of 10mm stepping motor:
The stroke is 9mm
Structure and composition of 10mm stepping motor
Structural composition of 10mm linear stepping motor (3D):
Structural composition of 10mm linear stepping motor (3D decomposition):
Rotor structure:
One end of the rotor is round
The other end of the rotor is double flat shaft
Matching of double flat shafts of rotor and screw rod.
Inside the nut:
Inside the nut: The inside of the nut contains threads that match the threads of the screw rod.
The nut converts the rotation of the screw rod into forward and backward movement (rotary movement → linear movement)
Motor stroke calculation: (from beginning to end)
The motor stroke is the process of moving the screw rod from A to B (9mm)
So the motor stroke is roughly:
The distance of the screw rod from point A to point B (determined by the structure of the motor, not the length of the screw rod)
Since it is useless to lengthen the screw rod, how to improve the travel of this motor?
Answer: Lift the distance between the double flat shaft and the nut. That is, extension nut, such as：
Then the motor will finally become like this:
In this way, the nut needs to be redesigned, and the lead screw (lengthening) needs to be redesigned for lengthening. The cost is very high, so this is generally not the case.
Another way of thinking:
Make the motor longer.
At present, the length of 10mm motor is 10mm.
The casing, intermediate class and skeleton are all finalized.
If the motor is lengthened, it means that the casing+intermediate class+skeleton+rotor will be lengthened together.
The cost is very, very high!!!
Post time: Nov-25-2022