M3 smart modules, microstages and focus modules It achieves 12,000 rpm, the fastest micro motor on the market. The design above, with orthogonal preload, is designed for speed. The speed and position of the threaded screw can be precisely controlled. Thread friction drives the shaft, directly converting rotary motion to linear motion without the need for a gearbox. In a linear SQUIGGLE motor, the rotating nut turns the threaded screw to create a smooth bi-directional linear motion with sub-micron resolution. A SQUIGGLE motor consists of several piezoelectric ceramic actuators attached to a nut (stator), with a mating screw (shaft) inside.Īpplying power to the actuators creates ultrasonic vibrations, causing the nut to vibrate in an orbit – similar to a person’s hips in a “Hula Hoop.” With this unique design, SQUIGGLE motors have: Piezoelectric actuators change shape when electrically excited. Strong: models with up to 5 Newton force (linear) or more than 3 mN-m (rotary).Fast: variable speed to 10 mm/sec (linear) or 12,000 rpm (rotary).This makes it ideal for hand-held and portable products. This simple, robust piezo motor is scalable to much smaller sizes than electromagnetic motors, without significant loss of power efficiency, and operates on 3.3 V. SQUIGGLE micro motors allow product designers to add motion features into products where they could not have been imagined before. ![]() This patented ultrasonic motor creates high force (or torque) and high speed with only a few parts – compare to complex electromagnetic gearhead motors with hundreds of parts. ![]() When the motor prototype is under the conditions of optimal operating frequency 150 Hz, voltage 240 Vp-p, and preload torque 7.8 N.mm, the maximum angular speed can reach 2.4 rad/s, the maximum load can reach 27.8 N mm and the maximum resolution of the movement angle can reach 0.941°.The heart of New Scale’s M3 smart module platform is the SQUIGGLE motor, a revolutionary piezo micro motor with incredibly small size and big performance. The final experimental results show that the optimal working frequency of the piezoelectric motor is 150 Hz, which is consistent with the characteristic frequency of the simulation. The structure of the piezoelectric motor is designed and analyzed using COMSOL5.5 software and then the motor performance is tested and analyzed by building an experimental platform to verify the feasibility of the motor design. The whole excitation process of the motor is in a resonance state, which has significant advantages, such as low friction and simple structure, compared with the traditional quasi-static piezoelectric motor. Because there is a clamping mechanism formed by the combination of clamp baffle and fixed clamp ring, thus the half-cycle resonant rotation of the rotor can be effectively completed, and repeated harmonic excitation can realize the unidirectional continuous rotation and swing of the rotor. The piezoelectric ceramic sheet on the rotor drives the vibrator to swing under the excitation of a single harmonic wave. The designed piezoelectric motor mainly includes a rotor (two vibrators, preload mechanism, and intermediate connection mechanism), a clamping mechanism, and another auxiliary mechanism. ![]() A resonant inertial impact rotary piezoelectric motor based on a self-clamping structure is designed, assembled, and tested.
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