Single-Motor Actuator Mechanism for Timed Translation and Rotation
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Solution Overview
Problem
Existing actuators require multiple power supplies or larger mechanisms to achieve both translational and rotational movements, which can increase size and stress on components.
Innovation Solution
A single motor actuator that translates and rotates an object by using a shaft extending through a driver, with the motor configured to perform translation and rotation at different times, reducing the size and stress on components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple power supplies or larger actuating mechanisms are used to achieve both translational and rotational movements, then the actuator can perform both movements simultaneously, but the size of the actuator increases and stress on components increases
Solution Approach 1:
The patent combines multiple functions (translational and rotational movements) into a single actuating mechanism. The cam mechanism is designed to perform both translation and rotation functions sequentially, eliminating the need for separate actuators for each movement type, thereby reducing overall actuator size while maintaining full functionality.
Solution Approach 2:
The patent implements periodic action by designing the cam mechanism to alternate between translational and rotational movements in sequential phases. The cam follower translates during certain cam rotation phases, then the mechanism transitions to rotational movement during other phases, allowing both functions to be achieved through time-sequenced periodic operations rather than simultaneous continuous actions.
2Adaptability or versatility
If multiple power supplies or larger actuating mechanisms are used to achieve both translational and rotational movements, then the actuator can perform both movements, but stress on the components increases
Solution Approach 1:
The patent merges translational and rotational actuation into a single integrated cam mechanism, which distributes and alternates the mechanical stress loads rather than concentrating them. By sequencing the movements, the mechanism avoids the cumulative stress that would result from two separate actuators operating simultaneously, reducing component wear and increasing reliability.
Solution Approach 2:
The periodic alternation between translation and rotation phases allows stress to be distributed over time rather than concentrated simultaneously. The cam mechanism naturally cycles through different motion phases, providing periodic relief from peak stress conditions and reducing cumulative fatigue on mechanical components.
3Volume of stationary object
If a single motor is used to translate and rotate an object at different times, then the size of the actuator is reduced, but the actuator must sequentially perform movements rather than simultaneously
Solution Approach 1:
The patent employs periodic action through the cam mechanism, which rhythmically alternates between translational and rotational phases. This periodic operation allows the single motor to efficiently sequence movements without excessive downtime, maintaining productive operation while using compact actuation. The cam profile is designed to optimize the timing and duration of each phase to balance size reduction with acceptable movement speed.
Data Source
AI summary
The actuator can include a driver coupled with a motor. The actuator can include a shaft extending through the driver. The actuator can include an anchor coupled with the shaft. The motor can be configured to translate the anchor at a first time by translation of the shaft through the driver. The motor can be configured to rotate the anchor at a second time by rotation of the shaft with the driver. The second time can be different than the first time.