Modular Bucket Assembly Fatigue Life Optimization
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Solution Overview
Problem
Existing bucket assembly manufacturing methods face challenges in reducing manufacturing time and addressing fatigue life reduction due to weld seams, with a need for modularization and customization while maintaining structural integrity.
Innovation Solution
A modular bucket assembly design featuring a universal bucket core with a continuous wrapper and obtuse bend, combined with a customizable extension module, which shifts stress concentrations away from weld seams and into the bucket core, improving fatigue life and allowing for prebuilding of core components to reduce production time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a bucket assembly is manufactured by welding together separate components to enable modularization and customization, then manufacturing time is reduced and adaptability is improved, but fatigue life is reduced due to stress concentrations at weld seams
Solution Approach 1:
The bucket assembly is divided into a universal bucket core and a separate extension module that can be attached to customize the final product. This segmentation enables modular manufacturing where the core is pre-built and standardized components are added later, reducing overall manufacturing time while maintaining structural integrity through optimized connection design at the interface between core and module
Solution Approach 2:
The obtuse bend feature is strategically positioned within the bucket core to specifically address stress concentration issues at the weld seam interface. This local geometric modification creates a stress-relieving transition zone that improves fatigue life at the critical connection area between the universal core and customizable extension module
2Adaptability or versatility
If a custom bucket is manufactured from scratch to meet specific application requirements, then adaptability is improved, but manufacturing time increases significantly
Solution Approach 1:
The bucket core is designed as a universal component that can serve multiple different bucket assembly configurations. By creating a standardized core with standardized interfaces, the same core can be used with different extension modules to produce various customized buckets, dramatically reducing manufacturing time for different applications while maintaining adaptability
Solution Approach 2:
The universal bucket core is pre-manufactured and prepared in advance with standardized interfaces and features. This preliminary action allows the core to be ready for assembly before the specific extension module is selected or manufactured, enabling faster overall production time while still allowing customization through the module selection process
Data Source
AI summary
A fatigue life optimized modular bucket assembly for a work machine and a method of manufacturing thereof are disclosed. The bucket assembly includes a bucket core having a pair of side sections, a continuous wrapper, a supporting element, and a receptacle; and an extension module having a pair of side bars, a guard module, an edge module, and, optionally, a set of extension plates. The method includes prebuilding the bucket core, receiving an order, providing parts for the extension module, and assembling the bucket core and the extension module parts. The bucket assembly may include universal and customizable components without exhibiting reduction to fatigue life commonly associated with weld seams.