Integral Flange Design for Vibrating Apparatus Durability
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Solution Overview
Problem
Vibrating apparatuses face durability issues due to stress concentrations and deformations from welding, particularly in stainless steel components, which can lead to harmonic vibrations, maintenance challenges, and contamination risks in food and pharmaceutical processing environments.
Innovation Solution
A vibrating apparatus design where the peripheral flange is integrated as a single piece with the wall, eliminating the need for welds and enhancing stress resistance, stiffness, and reducing stress concentrations through metal sheet forming methods like drawing, pressing, or punching, thereby minimizing deformation and improving resonance frequency estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If welding is used to attach the peripheral flange to the housing wall, then the ease of manufacture is improved, but the reliability deteriorates due to stress concentrations and deformation
Solution Approach 1:
The peripheral flange is merged with the housing wall to form an integral structure, eliminating the weld joint between these two components. This integration removes the stress concentration zone that would otherwise exist at the weld interface, thereby improving reliability while maintaining manufacturing simplicity through single-piece forming processes
Solution Approach 2:
The welding process is extracted or removed from the manufacturing sequence. Instead of welding the flange to the wall, the design takes out the need for this joining operation entirely by forming the flange as an integral part of the wall during the same forming process, thus eliminating the reliability issues associated with welds
2Ease of manufacture
If welding is used to attach the peripheral flange to the housing wall, then the ease of manufacture is improved, but the strength deteriorates due to stress concentrations in the weld
Solution Approach 1:
The peripheral flange and housing wall are merged into a single integral component, eliminating the weld joint that creates stress concentrations. This continuous structure distributes mechanical stresses more evenly throughout the material, thereby improving the overall strength and fatigue resistance of the assembly
3Ease of manufacture
If welding is used to attach the peripheral flange to the housing wall, then the ease of manufacture is improved, but the durability deteriorates due to vibration fatigue at the weld interface
Solution Approach 1:
The flange and wall are combined into an integral structure that eliminates the weld interface. This removal of the weld joint eliminates the primary site for vibration fatigue initiation, thereby significantly improving the durability and service life of the vibrating apparatus under continuous vibration conditions
4Ease of manufacture
If welding is used to attach the peripheral flange to the housing wall, then the ease of manufacture is improved, but the object-generated harmful factors worsen due to contamination risks from weld creases
Solution Approach 1:
The integral formation of the flange with the wall eliminates weld creases and irregularities that can trap contaminants. The smooth, continuous surface created by integral forming prevents contamination accumulation, which is particularly important in food and pharmaceutical processing applications where hygiene is critical
5Reliability
If the peripheral flange is formed as an integral part of the wall, then the reliability is improved by eliminating weld stress concentrations, but the device complexity increases
Solution Approach 1:
The flange and wall are merged into a single component, which eliminates the need for separate welding operations and associated fixtures, procedures, and quality control measures. While the forming process becomes more complex, the overall device complexity decreases by reducing the number of assembly steps and components
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
The solution enhances the durability and maintenance efficiency of vibrating apparatuses by distributing stress evenly, reducing the risk of breakage and contamination, while maintaining cost-effectiveness and ease of cleaning.
Implementation Method 1
The peripheral flange has been formed from said wall without adding material to said wall
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The vibrating apparatus has a housing (1 ) with a wall (2) provided with at least one aperture (3). A peripheral flange (4) protrudes from the wall (2) at the aperture (3) and has a plane surface (5) for abutment of a covering. The peripheral flange (4) is formed as an integral part of the wall (2), for instance by sheet metal forming, such as drawing, pressing, pulling, rolling and/or punching.