Telescopic Presser Element for Spindle Orthogonality and Force Sensing
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Solution Overview
Problem
Existing multitask devices lack a compact and efficient presser element that can perform functions such as checking the normality of the spindle axis relative to the structure, evaluating the force applied, and determining the initial distance and depth of movement against the surface during tasks like drilling.
Innovation Solution
A device with a telescopic presser element featuring a ball joint, equipped with a screw-nut system and sensors for measuring thrust, inclination, and deformation, allowing for orthogonal orientation and precise force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional presser element is used, then the structure is simple, but it cannot perform multiple functions such as checking normality, measuring force, and determining depth
Solution Approach 1:
The presser element is designed as a multi-functional device that can perform drilling, milling, and measurement tasks through a single integrated structure. The device includes a presser element with a ball joint assembly that enables both mechanical pressing operations and measurement functions (checking normality, measuring force, determining depth) without requiring separate dedicated tools for each function.
2Length of moving object
If the presser element is made translationally movable along the spindle axis, then the robot arm size can be reduced, but the device complexity increases due to additional driving means
Solution Approach 1:
The presser element is designed to be translationally movable along the spindle axis through a screw-nut mechanism, allowing dynamic adjustment of the presser element's position. This enables the robot arm to be more compact while still achieving the necessary pressing force and measurement capabilities through the movable configuration.
3Measurement precision
If a ball joint assembly is used to secure the presser element, then orthogonality checking is enabled, but the device complexity increases
Solution Approach 1:
The ball joint assembly serves multiple functions: it secures the presser element to the spindle, enables orthogonality checking through inclination measurement, and allows for force measurement. This multi-functional design achieves precise measurement capabilities without requiring entirely separate measurement systems.
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
Enables versatile and accurate performance of tasks by ensuring spindle orthogonality, controlling pressure, evaluating initial distance and depth of movement, and providing a compact, reliable multitask solution.
Implementation Method 1
a presser element comprising a first and a second element connected by a ball joint, said second element comprising a free end capable of contacting said surface and said first element being translationally movable along the axis of said spindle in such a way that the second element is oriented orthogonally to said surface when compressed against said surface
Data Source
AI summary
A device for performing at least one task on a structure to be worked on. The device includes: a frame; a fastener for fastening the frame to a motor-driven handling element capable of moving the device in space relative to a structure to be worked on; a spindle rotatably and/or translationally driven along a same axis to perform the at least one task; a presser element, coaxial with the spindle, capable of exerting a compressive force against the surface of the structure to be worked on. The presser element has a first and a second element connected by a ball-and-socket joint, the second element including a free end adapted to contact the surface and the first element being translationally movable along the axis of the spindle such that the second element is oriented orthogonally to the surface when compressed against the surface.