Linkage Assembly Weight Reduction via Segmented Arms
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Solution Overview
Problem
Existing linkage assemblies for drilling machines are heavy due to components manufactured by casting, leading to increased weight and cost, and require higher forces to actuate, reducing efficiency and performance.
Innovation Solution
A linkage assembly comprising a first arm, a second arm, an actuation member, and a connector assembly, pivotally coupled to pivot a feed table relative to a positioning member, with the actuation member moving between extended and retracted positions to optimize geometry and reduce the required force for movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If components are manufactured by casting process, then structural strength is ensured, but weight and cost of the linkage assembly increase substantially
Solution Approach 1:
The linkage assembly is divided into multiple separate components (first arm, second arm, actuation member, connector assembly) that are fabricated and then assembled together using pivot joints and couplings. This segmentation allows each component to be optimized independently and reduces the overall weight compared to a single cast structure, while maintaining structural strength through proper joint design.
Solution Approach 2:
Multiple functional components (arms, actuation member, connector) are combined into an integrated linkage assembly that achieves both weight reduction and structural integrity. The combination of fabricated components with appropriate connectors creates a unified structure that is both lightweight and strong.
2Ease of manufacture
If components are interconnected in a conventional configuration, then assembly is straightforward, but the force required to actuate the linkage assembly increases
Solution Approach 1:
The linkage assembly employs a dynamic interconnected configuration where components are pivotally coupled rather than rigidly fixed. This allows the linkage to adapt its geometry during actuation, optimizing force transmission paths and reducing the actuation force required while maintaining ease of assembly through standardized pivot joints.
Solution Approach 2:
The geometry and configuration of the linkage components are optimized to change parameters such as arm lengths, pivot positions, and connection points. These parameter changes enable the linkage to achieve favorable mechanical advantage ratios, reducing actuation force while maintaining straightforward assembly procedures.
3Device complexity
If conventional linkage configuration is used, then design is simple, but efficiency and performance of the drilling machine are reduced
Solution Approach 1:
The linkage assembly uses dynamic pivot connections and optimized geometric configuration to improve mechanical efficiency. The pivotal couplings allow smooth motion transmission and reduce friction losses, enhancing overall system efficiency and drilling machine performance without excessive complexity.
Solution Approach 2:
Optimized parameters including arm dimensions, pivot locations, and connection geometries are implemented to maximize mechanical advantage and minimize energy losses. These parameter optimizations improve productivity and efficiency while keeping the design manageable and not excessively complex.
Data Source
AI summary
A linkage assembly for a drilling machine includes a first arm, a second arm, an actuation member, and a connector assembly. A first end of the first arm is pivotally coupled to a positioning member at a first pivot joint. A first end of the second arm is pivotally coupled to a feed table at a second pivot joint. A first end of the actuation member is pivotally coupled to the feed table at a third pivot joint. The connector assembly is fixedly coupled to a second end of the first arm, and pivotally coupled to a second end of the second arm and a second end of the actuation member. The linkage assembly is adapted to pivot the feed table relative to the positioning member about a pivot axis based on movement of the actuation member between an extended position and a retracted position.