Single-layer three-section rail-type planar robot with double parallelogram
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Solution Overview
Problem
Current three-degree-of-freedom planar robots lack sufficient variety in configurations to meet diverse performance requirements across different application fields, particularly in providing two translational and one rotational degree of freedom.
Innovation Solution
A single-layer three-section rail-type planar robot with a double parallelogram structure, comprising a stationary platform, motion platform, and three branched chains with specific revolute joints and link bars, allowing for two translational and one rotational degree of freedom, with the option to select main driving joints or sliders for increased flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional three-degree-of-freedom robot configurations are used, then the robot can achieve basic movement functions, but the variety of configurations is insufficient to meet diverse performance requirements across different application fields
Solution Approach 1:
The robot mechanism is divided into three independent branched chains, each consisting of a slider, two link bars I, two link bars II, and link bar III. This segmentation allows each branch to be independently designed and adjusted, enabling configuration variety while maintaining manageable structural complexity through modular architecture.
Solution Approach 2:
The patent employs adjustable link bar lengths and selectable driving configurations (three revolute joints I as main driving joints or three sliders as driving parts). This dynamic adaptability allows the same basic structure to achieve different movement characteristics and performance requirements, increasing configuration variety without proportionally increasing overall structural complexity.
2Ease of manufacture
If the robot structure is simplified to reduce complexity, then manufacturing and assembly become easier, but the operational space and performance flexibility are reduced
Solution Approach 1:
The patent achieves performance flexibility through parameter adjustment rather than structural complexity. The link bars I and link bars II have adjustable lengths, and the planar curved rails can have different arc shapes and dimensions. These parameter changes allow the same simplified structural framework to adapt to different operational requirements, maintaining ease of manufacture while enhancing versatility.
3Manufacturing precision
If fixed configuration parameters are used to simplify design, then manufacturing precision is easier to control, but the ability to adjust operational space and performance is limited
Solution Approach 1:
The patent incorporates adjustable parameters within the branched chain structure, allowing link bar lengths and rail configurations to be modified after basic manufacturing. This dynamic design enables the system to maintain manufacturing precision through standardized components while achieving adjustment flexibility through reconfigurable connections and selectable driving modes.
Data Source
AI summary
A single-layer three-section rail-type planar robot containing a double parallelogram, is composed of a stationary platform, a motion platform and three branched chains with the same structure connecting the stationary platform and the motion platform, the stationary platform is provided with three planar curved rails, each planar curved rail is connected to the motion platform through a branched chain, and each branched chain includes a slider, two link bars I arranged in parallel, two link bars II arranged in parallel, and link bar III, select one revolute joint I in each branched chain to form three revolute joints I as the main driving joint or three sliders as the driving parts.