Adjustable Work Platform Stop for Miter Gauge Fence Positioning
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Solution Overview
Problem
Miter gauge assemblies face challenges in accurately guiding stock movement along work tables due to limitations in adjusting the fence's orientation and position relative to the cutting element, and in accommodating varying channel widths, leading to potential misalignment and reduced precision in cutting operations.
Innovation Solution
The guide assembly features an elongate bar with recesses and deformable members that adjust the working width to fit within the channel, and a fence system with movable brackets and locating members to ensure precise alignment with the blade and work surface, allowing for adjustable orientation and position of the fence relative to the base assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the fence is fixed in position and orientation relative to the base assembly, then the structure is simple and stable, but the adaptability to different channel widths and cutting requirements is reduced
Solution Approach 1:
The fence is designed with movable brackets that can slide along the base assembly, transforming the fixed structure into a dynamic one. This allows the fence position to be adjusted along the longitudinal axis while maintaining structural integrity through guide surfaces and positioning mechanisms.
Solution Approach 2:
The fence mounting system is divided into separate components: the base assembly with guide surfaces, movable brackets with guide surfaces, and the fence itself. This segmentation allows independent adjustment of each component to achieve precise positioning while accommodating different channel widths.
2Adaptability or versatility
If the guide assembly width is fixed, then the manufacturing is simpler, but the ability to accommodate varying channel widths is limited
Solution Approach 1:
The guide assembly incorporates deformable members that can change the working width dynamically. These members allow the assembly to adapt to different channel widths by deforming elastically under controlled force, providing versatility without requiring multiple fixed-width assemblies.
Solution Approach 2:
The working width of the guide assembly is made variable through the use of deformable members. By changing the physical state (deformation) of these members, the assembly can accommodate a range of channel widths, transforming a fixed parameter into an adjustable one.
3Measurement precision
If the fence is tightly constrained to the base assembly, then the alignment precision is high, but the ease of adjustment is reduced
Solution Approach 1:
Guide surfaces act as intermediaries between the movable brackets and the base assembly. These surfaces provide precise geometric constraints that ensure accurate alignment while allowing controlled movement during adjustment. The guide surfaces mediate between the need for precision and the need for adjustability.
Solution Approach 2:
The positioning mechanism is designed to self-align through the geometry of the guide surfaces. When the movable brackets are positioned, the guide surfaces automatically guide them into the correct alignment with the base assembly, eliminating the need for complex alignment procedures or external tools.
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 accurate and precise guidance of stock movement, improving cutting precision by allowing the fence to be squared to both the blade and work surface, and accommodating different channel widths, thus enhancing the overall performance of the miter gauge assembly.
Implementation Method 1
Each deformable member is operatively connected between each guide and the elongate bar so that movement of each guide relative to the elongate bar results in deformation of the deformable member
Data Source
AI summary
A stop for a tool that engages a work piece on a work platform includes a mounting assembly that can be movably mounted on the tool so that the mounting assembly is selectively positionable on the tool. A first member is operatively connected to the mounting assembly and projects outwardly from the mounting assembly. A second member projects from the first member to engage and locate the work piece with respect to the tool. The second member is mounted on the first member for movement along a length of the first member and is selectively fixed to the first member to adjust a distance between the second member and the mounting assembly.