Adjustable T-Square With Locking Detents For Precise Angles
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Solution Overview
Problem
T-squares face challenges in accurately drawing angled lines, especially in woodworking, where small errors can lead to significant issues due to the difficulty in ensuring precision at various angles beyond 90 degrees.
Innovation Solution
An adjustable T-square with a head portion, a movable ruler portion, a locking mechanism, and alignment mechanism that includes a pivot pin, locking pin, and locking detents with audible and tactile feedback to secure precise angles, allowing users to draw straight angled lines accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional T-square is used to draw horizontal lines, then the structure is simple and easy to manufacture, but the ability to draw accurate angled lines is limited
Solution Approach 1:
The T-square is transformed from a fixed-structure tool to an adjustable one, where the blade can be rotated relative to the head to different angular positions. The blade is divided into multiple segments that can be positioned at different angles and locked in place, enabling the tool to adapt to various drawing angles while maintaining structural integrity
Solution Approach 2:
The blade of the T-square is divided into multiple separable segments or sections that can be independently positioned and locked at different angular orientations. This segmentation allows the blade to be adjusted to various angles relative to the head, providing versatility for drawing angled lines while keeping each segment manageable in size
2Measurement precision
If manual angle estimation is used without precision mechanisms, then the device is simple to operate, but measurement precision deteriorates
Solution Approach 1:
The desired angle is pre-established through the indexing mechanism and detent positions, which are prepared in advance at precise angular intervals. The user simply needs to rotate the blade to the nearest detent position corresponding to the desired angle, eliminating the need for manual angle calculation or estimation during operation
Solution Approach 2:
An indexing mechanism with detents provides tactile and audible feedback to the user when the blade reaches a precise angular position. This feedback system confirms accurate angle setting through distinct clicking sensations and sounds, ensuring measurement precision while maintaining ease of operation through intuitive user interaction
3Adaptability or versatility
If the ruler portion is made movable to enable angle adjustment, then adaptability improves, but reliability of fixed position deteriorates
Solution Approach 1:
The blade is designed with dynamic characteristics, allowing it to be easily moved and rotated to different angular positions when adjustment is needed. The movable segments can be freely repositioned along the head, providing adaptability for various drawing angles
Solution Approach 2:
Detent mechanisms are pre-positioned at specific angular intervals to provide predetermined stable positions. When the blade is rotated to align with a detent, the locking mechanism automatically engages to secure the blade at that precise angle, ensuring reliability and position stability during the drawing process
Data Source
AI summary
An adjustable T-square device and method of use is shown and described herein. The adjustable T-square has a plurality of apertures with at least one locking detent to set precise angles. The adjustable T-square has a locking pin to further engage a ruler portion to a head portion to minimize error when using the device.