Ring Sizing Tool with Movable Guide for Accurate Blank Cutting
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Solution Overview
Problem
Jewelers face challenges in consistently determining the correct length of a ring blank for desired ring sizes due to the need to estimate the thickness of the blank, leading to inaccuracies and time-consuming processes when cutting rings of different sizes.
Innovation Solution
A ring sizing tool with a base and a movable guide that allows for precise measurement and cutting of ring blanks, incorporating a slot for a saw blade and ring size indications to ensure accurate cutting based on the desired ring size, accounting for the thickness of the blank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a jeweler estimates the thickness of the ring blank to determine the overall length, then the process can be completed without additional tools, but the measurement precision and manufacturing precision deteriorate due to estimation errors
Solution Approach 1:
The patent introduces a specialized ring sizing tool as an intermediary device between the jeweler and the ring blank. This tool includes a base with a base ring engaging surface and a guide with a guide ring engaging surface, creating a standardized measurement system that eliminates the need for estimation while providing precise measurement of the ring blank length including thickness
Solution Approach 2:
The ring sizing tool is designed to be self-contained with all necessary measurement and cutting guidance features integrated into a single device. The tool includes ring size indications, cut guide surfaces, and engaging surfaces that work together to automatically account for blank thickness, allowing the jeweler to obtain precise measurements without additional auxiliary tools or estimation steps
2Manufacturing precision
If a jeweler follows the steps of determining inside circumferences for each ring size and measuring corresponding blank lengths, then accurate ring sizing can be achieved, but the productivity decreases due to the time-consuming process
Solution Approach 1:
The ring sizing tool is designed as a universal device that can accommodate multiple ring sizes simultaneously. The guide can be positioned at different locations along the base, and the tool includes ring size indications that correspond to various ring sizes, allowing the jeweler to measure and cut blanks for different ring sizes using the same tool without needing to perform separate determination steps for each size
Solution Approach 2:
The tool incorporates pre-calculated ring size indications and pre-positioned cut guide surfaces that have been prepared in advance. The guide can be quickly positioned at predetermined locations corresponding to different ring sizes, eliminating the need for the jeweler to perform time-consuming determination and calculation steps for each ring size measurement
3Adaptability or versatility
If the guide is made movable with respect to the base, then the adaptability increases for different ring sizes, but the device complexity increases due to the movable connection mechanism
Solution Approach 1:
The ring sizing tool is divided into two separate but cooperatively connected components: a base and a guide. The base provides stable support with engaging surfaces and cut guide surfaces, while the guide can be independently positioned and locked at different locations. This segmentation allows the guide to be movable for adaptability while keeping each component relatively simple in structure
4Reliability
If the jeweler cuts the blank longer than the initial measurement to account for estimated thickness, then the reliability of the sizing process improves, but the loss of substance increases due to excess material
Solution Approach 1:
The invention replaces the manual estimation process with a mechanical measurement system. The ring sizing tool physically engages the ring blank between the base ring engaging surface and guide ring engaging surface, and the guide can be positioned to account for the exact thickness of the blank. This mechanical substitution provides reliable measurement without requiring excessive material to compensate for estimation errors
Data Source
AI summary
A ring sizing tool with a base and a guide movably coupled to the base. The base has first and second ends with a longitudinal axis extending between the ends. A cut guide surface is positioned adjacent the second end, and a base ring engaging surface is spaced apart from the cut guide surface. The guide has a guide ring engaging surface and at least one ring size indication spaced apart from the guide ring engaging surface. The guide is movable with respect to the base in a direction aligned with the longitudinal axis of the base between at least a first position, in which the guide ring engaging surface abuts the base ring engaging surface, and a second position, in which the guide ring engaging surface is spaced a distance from the base ring engaging surface. A method for sizing a ring with the ring sizing tool.