Wave Spring Flat Joined Portion for Stable End-Surface Welding
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Solution Overview
Problem
The existing wave spring designs face challenges in accurately joining end surfaces due to inclined surfaces, making it difficult to stabilize the shape and perform precise welding, especially with general-purpose welding machines.
Innovation Solution
A wave spring design featuring an annular body with crests and valleys alternately formed in the circumferential direction, where at least a portion is a flat surface orthogonal to the center axis for precise joining, allowing for easier stabilization and accurate welding using general-purpose machines, such as laser welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the end surfaces of the annular body are inclined with respect to the center axis, then the wave spring can be formed by joining C-shaped spring material, but the relative position of end surfaces is hard to be determined and the shape after joining is unstable
Solution Approach 1:
The invention changes the geometric parameter of the end surfaces from inclined to flat (orthogonal to the center axis). This parameter change enables both ends of the C-shaped spring material to be positioned parallel to the worktable surface, stabilizing the relative position and shape after joining while maintaining ease of manufacture.
2Adaptability or versatility
If the heat input surface is inclined with respect to the plane orthogonal to the center axis, then the wave spring structure is maintained, but the heat input direction is not orthogonal to the heat input surface making accurate welding difficult
Solution Approach 1:
The invention changes the orientation parameter of the heat input surface (end surfaces) to be orthogonal to the center axis. This enables the heat input direction from a general-purpose welding machine to be orthogonal to the heat input surface, achieving both compatibility with standard equipment and high welding precision.
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 design enables more accurate and stable joining of wave spring end surfaces, reducing stress concentration and failure risks during deformation, while allowing for balanced biasing forces and improved joining accuracy with general-purpose welding equipment.
Implementation Method 1
the joined portion of the annular body is a flat portion extending in a plane orthogonal to a center axis of the annular body
Implementation Method 2
when the laser light is radiated in a direction perpendicular to the upper surface of the welding worktable, the laser light is radiated naturally perpendicular to an irradiated surface (a surface of the flat portion)
Data Source
AI summary
A wave spring includes an annular body in which crests and valleys are alternately and continuously formed in a circumferential direction. At least a portion of the annular body in the circumferential direction is a joined portion. The joined portion of the annular body is a flat portion extending in a plane orthogonal to a center axis of the annular body.