Hand-Held Machining Guidance Using Marker-Based Coordinate References
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Solution Overview
Problem
Existing systems for machining workpieces with marker detection devices integrated into hand-held power tools lack sufficient precision due to inaccuracies in detecting and guiding tools along workpiece markers.
Innovation Solution
The system employs an optical and/or mechanical reference positioned directly next to the workpiece marker, allowing for precise determination of coordinate data relative to a two-dimensional or three-dimensional coordinate system independent of the marker, enabling accurate guidance of the working tool within a defined working space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an optical system is used to map the workpiece marker, then the user can see where the marker is located, but inaccuracy occurs because the user sets a virtual reference to the mapped marker instead of direct contact
Solution Approach 1:
The patent introduces a dual-reference system where an optical reference (visible to user) and a mechanical reference (contact-based for precision) work together as intermediaries. The optical reference provides visual guidance while the mechanical reference ensures precise positioning through direct contact with the workpiece marker, eliminating the inaccuracy of virtual reference setting.
Solution Approach 2:
The reference system is segmented into two distinct components: an optical reference element for visualization and a mechanical reference element for precise contact-based positioning. This segmentation allows each element to fulfill its specific function optimally - the optical part for ease of operation and the mechanical part for measurement precision.
2Stability of the object's composition
If a fixed reference system is used, then the coordinate system is stable, but the system cannot adapt to different workpiece positions or orientations
Solution Approach 1:
The patent implements a dynamic reference system where the mechanical reference element can be repositioned and reoriented to contact different workpiece markers. The coordinate system updates dynamically based on the new reference positions, allowing the system to adapt to various workpiece configurations while maintaining stability during each measurement operation.
Solution Approach 2:
The reference system is designed to be universal, capable of working with different workpiece types, positions, and orientations. The mechanical reference element can contact various marker locations, and the system can establish coordinate systems in multiple orientations, making it versatile for different machining scenarios while maintaining measurement stability.
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
This approach enhances precision by ensuring exact spatial coincidence between the reference and the workpiece marker, improving the accuracy of machining operations by using adjustable and mobile references for precise alignment and tracking.
Implementation Method 1
the marker detection device has an optical and/or mechanical reference which can be positioned on and/or directly next to the at least one workpiece marker
Data Source
AI summary
A system for machining a workpiece,comprising a hand-held power tool having a drive motor, a tool holder, which can be driven by the drive motor, for a working tool for machining the workpiece, and a guide element with a guide surface for guiding the hand-held power tool on the workpiece,having a marker detection device for detecting coordinate data of at least one workpiece marker of the workpiece, wherein the hand-held power tool has guide means for guiding the working tool along the workpiece according to the coordinate data of the at least one workpiece marker. The marker detection device has an optical and/or mechanical reference which can be positioned on and/or directly next to the at least one workpiece marker. The marker detection device is designed for determining the coordinate data of the at least one workpiece marker relative to an at least two-dimensional coordinates system which is independent from the workpiece markerand the guide means of the hand-held power tool are designed to guide the working tool relative to the at least two-dimensional coordinates system in a working area which is geometrically defined by working area data determined based on the coordinate data of the at least one workpiece marker.