Load-adjustable large-stepping-amplitude linear piezoelectric motor
A piezoelectric motor and large-step technology, which is applied to piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. , small load capacity and other problems, to achieve the effect of rapid rebound after power failure, increase the step amplitude, and simplify the structure size
Active Publication Date: 2020-08-28
DONGHUA UNIV
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Problems solved by technology
However, the current non-resonant motors generally have shortcomings such as small load capacity, easy to be affected by external loads, small step amplitude, and low precision. Therefore, a new type of motor with external load adjustment, large step amplitude, and high precision has been developed. Linear piezo motors make a lot of sense
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[0020] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.
[0021] The present invention is an adjustable load large-step amplitude linear piezoelectric motor, which includes a pre-tightening bolt 1, a compliant driving foot 2, a micro-movement leaf spring 3, a piezoelectric block 4, a stop screw 5, a lifting block 6, and a friction plate 7. Fix the bolt 8, the slider 9 and the slide rail 10. Among them, the compliant drive foot 2 is used as the installation reference of the entire motor and the key component to realize the large step amplitude. The compliant driving foot 2 includes a compliant amplifying mechanism 201 located inside the compliant driving foot 2, a compliant driving foot actuating part 205, a compliant leaf spring 206, and a flexible hinge 207. The piezoelectric block 4 is installed in the embedding groove of the compliant driving foot 2, The compliant amplifying mechanis...
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The invention provides a load-adjustable large-stepping-amplitude linear piezoelectric motor, which is characterized by comprising a compliant driving foot, a vertical lifting mechanism, a horizontalsliding mechanism, a piezoelectric block and a friction disc, wherein the compliant driving foot comprises a compliant amplification mechanism, a compliant driving foot actuating part and a compliantleaf spring. The compliant driving foot designed in the invention integrates the compliant amplification mechanism and a flexible hinge, and realizes amplification of the output displacement of the piezoelectric block, so that the stepping amplitude can be increased, and rapid rebound in case of power failure is realized; a load adjusting device composed of a lifting block and a micro-motion platespring is designed, stable friction force adjustment between a sliding block and the friction disc can be conducted according to different external loads, and the output stability is guaranteed; andthe overall integrated design effectively simplifies the structural size, and the application range of the motor is expanded.
Description
technical field [0001] The invention relates to a linear piezoelectric motor with adjustable load and large step amplitude, which belongs to the field of ultra-precision linear motors. Background technique [0002] For applications in the field of ultra-precision actuation, such as micro-nano operation, optical alignment, robot movement, etc., linear motors have attracted widespread attention due to their compact structure, fewer transmission chains, self-locking when power is off, fast response, and high actuation precision. . At present, linear piezoelectric motors are mainly divided into resonance type and non-resonance type according to the actuation method of the piezoelectric element on the stator. The resonant motor achieves the purpose of driving the mover by adjusting the frequency and amplitude of the excitation signal and causing the stator to resonate with the piezoelectric element. This method is easy to cause frequency shift due to processing and assembly erro...
Claims
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Login to View More IPC IPC(8): H02N2/02H02N2/04
CPCH02N2/021H02N2/043
Inventor 孙小庆柏转胡俊王庆霞
Owner DONGHUA UNIV