Decorative Ring Insert Production via Compressive Stress
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Solution Overview
Problem
Conventional methods for producing decorative rings with insert rings face limitations, such as restricted recess depth, material deformation, and insufficient frictional connection, especially when using gold or silver alloys, which hinders the accommodation of larger settings for precious stones and requires additional annealing processes.
Innovation Solution
Applying a ring-shaped compressive stress by pressing the carrier ring with the insert ring into a cylindrical upset mold with a conical entry area, allowing even compression and plastic deformation of the insert ring, enabling a deeper recess and stable frictional connection without additional annealing, and allowing for multiple insert rings for enhanced optical effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the carrier ring is spread open using conventional methods to accommodate the insert ring, then the insert ring can be positioned in the recess, but the recess depth is limited to at most 1.0 mm due to material deformation and breakage
Solution Approach 1:
The insert ring is pulled onto the carrier ring before the carrier ring is spread open. This preliminary positioning allows the insert ring to be secured in place before the expansion process, preventing it from being deformed or broken during the spreading operation.
Solution Approach 2:
The patent uses a dynamic process where the carrier ring is spread open in stages. The inner and outer diameters of the carrier ring are increased progressively, allowing the insert ring to be accommodated in the recess while maintaining sufficient material thickness to prevent breakage.
2Length of stationary object
If the insert ring is made thinner to fit in the shallow recess, then it can be accommodated, but the material thickness is insufficient for setting precious stones and deformations or breakage occur
Solution Approach 1:
The insert ring is positioned in the recess before the carrier ring is spread open to its final size. This allows the insert ring to be secured while the carrier ring still has sufficient thickness to accommodate it, and then the carrier ring is expanded to the desired final size, resulting in a recess depth of at least 1.0 mm that can accommodate settings for precious stones.
3Reliability
If additional annealing process is applied to ensure frictional connection, then the insert ring is secured, but the material hardness is reduced
Solution Approach 1:
The insert ring is pulled onto the carrier ring and positioned in the recess before the carrier ring is spread open. This preliminary positioning creates a frictional connection through the interference fit, securing the insert ring in place before the expansion process, eliminating the need for additional annealing that would reduce material hardness.
4Ease of operation
If the carrier ring is made significantly smaller initially to allow insert ring to be pulled on, then the insert ring can be mounted, but the carrier ring requires extensive spreading that limits recess depth
Solution Approach 1:
The patent uses a dynamic expansion process where the carrier ring is spread open in a controlled manner after the insert ring is positioned. The inner and outer diameters are increased progressively, allowing the carrier ring to transition from a state that allows easy mounting to a final state with sufficient recess depth of at least 1.0 mm.
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 method enables the production of decorative rings with insert rings up to 1.6 mm thickness, allowing for larger stone settings and a high frictional connection, preventing relative movement between rings, and enabling multiple insert rings for enhanced optical effects without material deformation or breakage.
Implementation Method 1
the plastic deformation is produced by means of an annular compressive stress, which is applied to an outer side of the at least one storage ring and is directed radially inwards
Implementation Method 2
a uniform ring-shaped compressive stress can be applied to the outside of the insert ring using simple means, as a result of which it is evenly compressed over its circumference
Implementation Method 3
the compression of the insert ring causes a certain widening of the cross section, by means of which it can clamp very stably in the recess
Implementation Method 4
a relatively high frictional connection is produced between the storage ring and the carrier ring, which can prevent unwanted relative movements between the two rings
Data Source
Figure 1~2
Figure 3~5
Figure 6~8
AI summary
A support ring (4) has a recess (10) for receiving an insert ring (6). The plastic deformation of insert ring due to inwardly direct annular compressive stress (D) in radial direction on outer side of insert ring is produced. The support ring after removal of insert ring from the recess is compressed in the axial direction subsequently. An independent claim is included for jewelry ring.