Guide Plate Reference Marking for Power Tool Image Alignment
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Solution Overview
Problem
Existing machine tools lack effective sensors for accurately aligning and orienting workpieces during machining, leading to inefficiencies and inaccuracies in tool operation.
Innovation Solution
Incorporating a reference marking detectable by the tool sensor, which allows the evaluation device to determine correction values for the tool sensor signal, enabling optimal orientation and alignment of the workpiece contact region relative to other machine components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a camera is used as a tool sensor to capture images of the workpiece, then the operator can visually monitor the machining process, but the image orientation and alignment remain dependent on camera arrangement and lack automatic correction
Solution Approach 1:
The patent replaces manual mechanical alignment of the camera with an automated optical measurement system. The tool sensor (camera) captures images of reference markings on the workpiece, and the evaluation device automatically calculates orientation corrections, substituting manual mechanical adjustment with automated optical-mechanical coordination.
Solution Approach 2:
The system implements feedback by continuously monitoring the position of reference markings through the tool sensor and automatically adjusting the image orientation based on detected deviations. The evaluation device processes sensor signals and generates correction values that are applied in real-time, creating a closed-loop control system for image orientation.
2Adaptability or versatility
If the camera is mounted at different positions and orientations on the machine tool, then flexibility in installation is improved, but the image output becomes misaligned with machine tool components requiring complex correction
Solution Approach 1:
The patent replaces complex mechanical alignment procedures with automated optical detection and computational correction. Instead of physically adjusting the camera to specific positions, the system uses the tool sensor to detect reference markings and computationally corrects image orientation based on the detected positions, eliminating the need for precise mechanical mounting.
Solution Approach 2:
The system changes the parameter of image orientation dynamically based on detected reference marking positions. Rather than fixing the camera at a specific orientation, the evaluation device calculates correction values that adjust the image parameters (rotation, translation) to align with machine tool components, allowing flexible installation while maintaining proper alignment.
3Device complexity
If no reference marking is used, then the machine tool structure remains simpler, but automatic orientation correction and precise alignment cannot be achieved
Solution Approach 1:
The patent introduces reference markings as an intermediary element between the workpiece and the measurement system. These markings serve as mediators that the tool sensor can detect and use to calculate orientation corrections, enabling precise alignment without adding complex mechanical alignment mechanisms to the machine tool structure.
Solution Approach 2:
The system creates a virtual copy or representation of the workpiece orientation through detected reference markings. The evaluation device uses the positions of these markings to generate correction values that align the digital image representation with the actual physical workpiece and machine tool components, achieving precision through information processing rather than mechanical means.
Data Source
AI summary
A mobile machine tool (10), namely a manually-operated machine tool (10) or semi-stationary machine tool (10), for machining a workpiece (W), wherein the machine tool (10) has a plate-like guide element (30) with a guide surface (32) for guiding the machine tool (10) on the workpiece (W) or the workpiece (W) on the machine tool (10), wherein the machine tool (10) has a drive unit (11) with a drive motor (13) for driving a tool holder (14) arranged on the drive unit (11) in order to hold a work tool (15), wherein the machine tool (10) has a tool sensor (61, 62), the detection range of which (EB1, EB2) is directed at at least a partial region of the machine tool (10), and wherein the machine tool (10) has an evaluation device (80) for evaluating a tool sensor signal generated by the tool sensor (61, 62). A reference marking (R1, R2) which can be detected by the tool sensor (61, 62) is arranged within the detection range (EB1, EB2) of the tool sensor and the evaluation device (80) is configured to determine at least one correction value for the tool sensor signal depending on the reference marking (R1, R2).