Mobile Power Tool Height Sensing for Precise Penetration Depth
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Solution Overview
Problem
Existing machine tools lack an efficient method for adjusting the optimal penetration depth of cutting tools into workpieces, leading to suboptimal cut quality and increased machining forces.
Innovation Solution
Incorporating a height measuring device with optical sensors and a display system to detect the workpiece edges and provide real-time feedback for precise adjustment of the tool holder's position, allowing for optimal penetration depth settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement methods are used to determine workpiece height, then the operator can obtain penetration depth information, but the operation becomes complex and time-consuming
Solution Approach 1:
The patent replaces manual mechanical measurement methods with an optical measurement system. The height measuring device uses optical sensors (such as cameras or laser sensors) to automatically detect the workpiece height and calculate the optimal penetration depth, eliminating the need for operators to manually measure and calculate, thus improving both measurement precision and operational ease
Solution Approach 2:
The height measuring device enables the machine tool to automatically measure and determine its own optimal penetration depth without external intervention. The system self-calibrates and provides real-time feedback to the operator or control system, making the measurement process autonomous and eliminating dependency on manual external measuring devices
2Measurement precision
If the height measuring device uses complex optical systems, then measurement precision improves, but device complexity increases
Solution Approach 1:
The height measuring device is designed to perform multiple functions: it not only measures workpiece height but also detects workpiece edges, determines penetration depth, and provides guidance for tool positioning. By integrating these functions into a single device, the patent achieves high measurement precision without proportionally increasing device complexity
Solution Approach 2:
The patent introduces an evaluation device that processes raw optical data and converts it into meaningful measurement information. This intermediary processing layer simplifies the overall system architecture by separating the complex optical sensing from the data interpretation, allowing the optical system to remain relatively simple while achieving high measurement precision through intelligent data processing
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 solution enables precise adjustment of the cutting tool's penetration depth, improving cut quality, reducing machining forces, and enhancing operator convenience by eliminating the need for external measuring devices.
Implementation Method 1
a height measuring device for detecting a height of the workpiece
Data Source
AI summary
A mobile machine tool (10), namely a manually-operated machine tool or semi-stationary machine tool, for machining a workpiece (W), wherein the machine tool has a plate-like guide element (30) with a guide surface (32) for guiding the machine tool on the workpiece (W) or the workpiece (W) on the machine tool, wherein the machine tool has a drive unit (11) with a drive motor (13) for driving a tool holder (14) arranged on the drive unit (11), wherein the drive unit (11) is, by means of a bearing arrangement (35), mounted adjustably on the guide element (30) in order to adjust at least two adjustment positions (S0, S1, S2) of the tool holder (14) relative to the guide surface (32) in which a work tool (15) arranged on the tool holder (14), penetrates into the workpiece (W), to different penetration depths. The machine tool (10) is provided with a height measuring device (95) for detecting a height (H) of the workpiece (W), wherein the height corresponds to a distance between an upper side (WO) of the workpiece which is to be penetrated by the work tool (15) and a workpiece underside (WU) of the workpiece (W) opposite the upper side of the workpiece (W).