Voice-Controlled Woodworking Machines for Hands-Free Safe Adjustment
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Solution Overview
Problem
Existing woodworking machines require manual adjustment of settings while holding and guiding a workpiece, limiting ease of use and safety during operations.
Innovation Solution
A voice control device that receives and processes voice commands to control machining tools, allowing adjustments only when stationary, and includes interactive voice instructions and noise suppression, enabling hands-free operation and enhanced safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment mechanisms are provided for changing settings, then the machine can be adjusted to different operating parameters, but the user cannot adjust settings during operation when both hands are occupied with the workpiece
Solution Approach 1:
The patent replaces manual mechanical adjustment mechanisms with an automated control system that responds to acoustic signals. The control unit receives acoustic inputs (voice commands) and automatically adjusts machine parameters, eliminating the need for manual operation during workpiece handling. This substitution allows settings to be changed during operation without requiring the user to stop or use hands for adjustment.
2Ease of operation
If voice control is enabled during machining operation, then hands-free operation is achieved, but safety hazards increase due to potential accidental activation during hazardous machining
Solution Approach 1:
The patent applies different voice command recognition criteria for different operational states. The control unit distinguishes between local contexts (stationary vs. moving tool) and applies appropriate activation thresholds and command validation rules. During hazardous machining operations, the system requires more specific or confirmed voice inputs to prevent accidental activation, while allowing more flexible control when the tool is stationary.
Solution Approach 2:
The system continuously monitors machine state and provides feedback to the voice recognition system. The control unit receives information about current operational status (tool stationary or moving) and adjusts voice command acceptance accordingly. This feedback mechanism ensures that voice commands are only executed when appropriate, maintaining safety during hazardous operations while enabling hands-free control when safe.
3Extent of automation
If speech recognition is used to control the machine, then voice commands can be processed, but specific adjustments during operation are not possible with existing systems
Solution Approach 1:
The patent implements a dynamic voice control system where the level of automation and types of allowed adjustments change based on operational state. The control unit adapts the degree of automation dynamically - allowing more autonomous adjustments when the tool is stationary and requiring higher-level confirmation or limiting adjustments when the tool is moving. This dynamic approach enables versatile adjustment options while maintaining operational safety.
Data Source
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AI summary
The invention relates to a woodworking machine (2, 102), in particular a panel saw (4) or edge banding machine (104), comprising a processing tool (8, 108) which is used to process a workpiece (10) fed to the woodworking machine (2, 102). The invention also relates to a voice control device (12, 112) which is designed to process voice commands (14, 114) from a user of the woodworking machine (2, 102) and to generate, from the voice commands (14, 114), control signals (16, 116) for controlling the woodworking machine (2, 102), wherein the woodworking machine (2, 102) is designed to be controlled on the basis of the control signals (16, 116).