Woodworking Machine Stop Position Correction for Cutting Angles
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Solution Overview
Problem
Current woodworking machines face complexity in determining the exact stop position for cutting angles, as the axis of rotation for the stop rail is not in the cutting plane, leading to a significant setup effort and potential rejects, especially when changing cutting angles.
Innovation Solution
A method that calculates a correction measure based on the cutting angle and additional tool or table information, allowing for precise positioning of the length stop by considering the geometric changes, enabling quick and reliable setting of the stop position even with new cutting angles, and providing a scalable solution from simple to fully automatic machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the stop rail is pivoted to change cutting angles, then cutting versatility is improved, but the stop position scales become useless and setup complexity increases
Solution Approach 1:
The controller pre-calculates the correction measure based on the cutting angle and geometric relationships before the actual cutting operation. This preliminary calculation allows the stop position to be automatically adjusted without complex manual setup procedures, resolving the contradiction between cutting angle versatility and setup complexity
Solution Approach 2:
The patent replaces manual measurement and calculation methods with an automated electronic system. The controller uses encoded values and geometric relationships to automatically determine the correct stop position, substituting complex mechanical setup procedures with electronic computation and display
2Device complexity
If manual calculation methods are used to determine stop position, then device complexity is reduced, but measurement precision and manufacturing precision deteriorate
Solution Approach 1:
Manual calculation and measurement methods are replaced with an electronic controller that automatically computes the correction measure using encoded geometric relationships. This substitution maintains simple device operation while dramatically improving stop position precision through accurate electronic calculation
Solution Approach 2:
The controller acts as an intermediary between the cutting angle setting and the stop position determination. It uses encoded values representing geometric relationships to mediate the calculation, ensuring both precision and simplicity by offloading complex computations to the electronic system
3Manufacturing precision
If test cuts are performed to determine stop position, then measurement precision is improved, but productivity and time efficiency worsen
Solution Approach 1:
The controller performs preliminary calculation of the correction measure using encoded geometric relationships before any cutting operation begins. This pre-computation eliminates the need for time-consuming test cuts while maintaining high cutting accuracy, as the correct stop position is determined through precise electronic calculation
Solution Approach 2:
The system provides feedback to the operator through the display, showing the calculated correction measure and expected stop position. This feedback mechanism replaces iterative test-cut procedures with a single-step accurate setting, dramatically reducing setup time while maintaining precision
Data Source
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AI summary
The method for determining the cutting angle dependent correction value of the cutting plane of a processing tool along the longitudinal extension of a fixture rail on a work-piece table involves a wood processing machine movably located on a stop rail (2) which is adjusted at a cutting angle (alpha). The basis of the cutting angle and the desired length weight (1) as well as further table-relative work-tool information determines the length position and the position of joints.