Gemstone Faceting Apparatus with Precision Divider
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Solution Overview
Problem
Current gemstone processing methods, whether manual or automated, lack precision and accuracy, resulting in poor brilliance and dispersion of light due to asymmetrical facets and irregular angles, leading to the production of 'dead stones' and unsafe working conditions.
Innovation Solution
A precision divider attached to a vertical angle and elevation platform, allowing for precise cutting and polishing of gemstones with angular and depth precision of 0.125° and 0.001 mm, enabling the production of high-quality gemstones with perfect symmetry and optimal light reflection and refraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual processing methods (jamb peg) are used, then ease of operation is improved, but manufacturing precision deteriorates resulting in asymmetrical facets and irregular angles
Solution Approach 1:
The patent introduces an intermediary device (the faceting machine with protractor and angle setting plate) between the operator and the gemstone processing. This intermediary provides standardized angular measurements and positioning, enabling manual operators to achieve precise, repeatable facet angles without requiring advanced manual skill. The protractor and angle setting plate act as mediators that translate manual operations into precise geometric outcomes.
Solution Approach 2:
The patent replaces the purely manual mechanical system (hand-sticks with visual estimation) with a hybrid system that incorporates mechanical measurement tools (protractor, angle setting plate with graduations, locking screws). This substitution introduces objective measurement and control mechanisms that eliminate the imprecision of manual estimation while maintaining manual operability.
2Manufacturing precision
If large automatic machines are used, then manufacturing precision is improved, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The patent segments the complex automatic faceting machine into simpler, independent functional components: a stationary protractor, a rotatable angle setting plate, a faceter spindle, and basic locking mechanisms. Each component performs a single function and can be operated independently. This segmentation reduces overall device complexity while maintaining manufacturing precision through the cumulative effect of precise individual components.
Solution Approach 2:
The patent creates a multi-functional apparatus that can perform multiple faceting operations (cutting, polishing, angle setting) using a single integrated device. The angle setting plate serves multiple purposes: setting angles, locking positions, and providing reference measurements. This universality reduces the need for multiple specialized machines, thereby reducing overall device complexity while maintaining precision across different operations.
3Ease of manufacture
If thin material is used for pointer and angle setting plate, then ease of manufacture is improved, but stability deteriorates leading to operational errors
Solution Approach 1:
The patent applies local quality by making the angle setting plate and protractor thicker and more rigid at critical areas (the rotating interface and locking mechanisms) while maintaining thinner material elsewhere. This localized reinforcement provides stability where needed for precise angular positioning without unnecessarily increasing overall material usage or manufacturing complexity throughout the entire structure.
Solution Approach 2:
The patent employs composite construction by combining different materials with complementary properties: the protractor and angle setting plate use materials that provide both rigidity for stable angular positioning and ease of machining for制造. The combination of material properties achieves both stability and ease of manufacture without requiring uniform thick construction throughout.
4Ease of manufacture
If minimum graduation of 1° is used, then ease of manufacture is improved, but manufacturing precision deteriorates causing loss of light reflection and refraction
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-marking the angular graduations on the protractor and angle setting plate during manufacturing. The precise angular positions are predetermined and physically marked on the components, allowing the operator to simply align and lock without performing complex calculations during operation. This preliminary preparation enables fine angular precision (better than 1°) to be achieved without increasing operational complexity.
Solution Approach 2:
The patent uses copying by creating multiple identical angular reference marks and graduations on both the protractor and angle setting plate. These copied reference marks provide consistent, repeatable angular measurements that can be reliably reproduced for each faceting operation. The duplication of precise angular references ensures manufacturing precision is maintained across multiple operations without requiring recalculation or remeasurement.
5Ease of operation
If unstable manual handling is used, then ease of operation is improved, but reliability deteriorates resulting in errors during cutting and polishing
Solution Approach 1:
The patent incorporates feedback mechanisms through the locking screws and fastening means that provide tactile and visual confirmation when the angle setting plate and faceter spindle are properly positioned and secured. The operator can feel and see when the locking mechanism is engaged, providing immediate feedback that ensures reliable positioning. This feedback loop eliminates the uncertainty of unstable manual handling while maintaining ease of operation through simple locking actions.
Solution Approach 2:
The patent applies beforehand cushioning by providing over-constraining the positioning system with multiple locking points and fastening means. The angle setting plate is secured to the protractor with multiple screws, and the faceter spindle is locked to the angle setting plate with additional fastening means. This redundant constraint system provides a safety margin that prevents positioning errors even if one locking mechanism fails, thereby enhancing reliability without complicating the basic operation.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3a
AI summary
Gemstone cutting and polishing apparatus comprising two main components: a precision divider (100) and an angle and elevation platform (200). The precision divider (100) is arranged to cut and polish a desired number of facets in a gemstone with high precision. The precision (100) divider is attached, preferably releasable, pivotal to the angle and elevation platform (200). The precision divider (100)can be positioned and locked in an angle between 0° and 90° withrespect to the horizontal level, to produce precisely cut facets in the gemstone with desired angles. The precision divider (100) is provided with an improved dopstick receptacle (106) with a non-circular cross-section, and a correspondingly shaped dopstick (500, 503), thus providing a highly fixed and stable attachment of the gemstone being processed.