Dual Oscillatory Actuator Backlash Elimination
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Solution Overview
Problem
Existing driving mechanisms for components in optical and imaging apparatuses fail to effectively reduce backlash between components and guide bars, affecting the optical performance by allowing movement within a defined backlash range.
Innovation Solution
A driving apparatus with a pair of linear actuators arranged at an angle to generate both axial and rotational forces, allowing the axial member to translate and rotate, thereby eliminating backlash by ensuring precise alignment and contact with engagement surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an oscillator of an oscillatory wave actuator is pressed against the component to be driven to transmit driving force, then backlash between the component and one guide bar is removed, but backlash between the component and the other guide bar cannot be reduced
Solution Approach 1:
The driving force transmission is segmented into two independent oscillatory wave actuators, each responsible for pressing the component against one guide bar. This segmentation allows simultaneous removal of backlash with both guide bars, resolving the limitation where only one guide bar's backlash could be removed at a time
Solution Approach 2:
Two oscillatory wave actuators are combined to work simultaneously on the same component, with each actuator eliminating backlash at a different guide bar interface. This merging of multiple actuation mechanisms achieves comprehensive backlash removal that a single actuator cannot accomplish
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively removes backlash between axial members and engagement supports, enhancing optical performance by ensuring accurate positioning and reducing movement variability within the optical system.
Implementation Method 1
a driving unit that generates a first driving force in the axial direction and a second driving force in a direction intersecting the axial direction
Data Source
AI summary
A driving apparatus includes a first axial member that is arranged so as to extend in a predetermined direction, where the predetermined direction is the axial direction of the first axial member, and a driving unit that is configured to generate a first driving force in the axial direction and a second driving force in a direction intersecting the axial direction, where the first and second driving forces are to be applied to the first axial member.