Mobile Phone Middle Frame Riveting Assembly to Cut Material Waste
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Solution Overview
Problem
Current methods for processing mobile phone middle frames, such as CNC cutting and forging, result in high material waste and low efficiency, along with high costs and complex processes.
Innovation Solution
A process involving the use of metal components with riveting grooves and projections, where these components are mounted around a metal middle plate to form a border frame, and then deformed to latch the projections into the grooves, forming a connected middle frame with reduced waste and improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If CNC cutting and drilling methods are used to process the middle frame, then the processing technology is relatively simple, but the material waste is large and processing efficiency is low
Solution Approach 1:
The middle frame is divided into multiple components: a middle plate and several clamps. Each component is processed separately using simple techniques, then assembled together. This segmentation reduces material waste while maintaining manufacturing simplicity, as each component can be optimized independently for material efficiency.
Solution Approach 2:
The clamps are designed to wrap around and enclose the middle plate, with the riveting projections nesting into the riveting grooves. This nested structure maximizes material utilization by forming the frame through assembly rather than cutting from a single large piece, significantly reducing material waste.
2Ease of manufacture
If CNC cutting and drilling methods are used to process the middle frame, then the processing technology is relatively simple, but the processing efficiency is low
Solution Approach 1:
Dividing the middle frame into separate components (middle plate and clamps) allows parallel processing of multiple parts simultaneously. The clamps can be manufactured independently from the middle plate, enabling concurrent production and improving overall processing efficiency while using simple techniques.
Solution Approach 2:
The clamps are pre-formed with riveting grooves and the middle plate is prepared with riveting projections before assembly. This preliminary preparation of connection features allows for rapid assembly without time-consuming drilling or machining during final assembly, thereby improving processing efficiency.
3Ease of manufacture
If thin aluminum alloy plates are forged to reduce CNC processing, then the manufacturing cost is reduced, but the method becomes complicated and efficiency is low
Solution Approach 1:
The forged middle frame is segmented into a middle plate and separate clamps that assemble together. This segmentation simplifies the forging process for each individual component compared to forging a complete complex frame, reducing both cost and complexity while maintaining the benefits of forged construction.
Solution Approach 2:
Multiple forged components (clamps and middle plate) are merged through assembly using riveting projections and grooves to form the complete middle frame. This combining approach achieves the cost benefits of forging while avoiding the complexity of forging the entire complex structure in one piece.
4Ease of manufacture
If traditional CNC cutting methods are used, then the processing technology is simple, but both methods form large-area waste portions that require subsequent CNC cutting
Solution Approach 1:
By segmenting the frame into clamps and middle plate, the large-area waste problem is eliminated. Each component is sized appropriately for its function, minimizing waste from the beginning. The assembly process directly creates the final shape without requiring subsequent cutting to remove large waste portions, reducing processing time.
Solution Approach 2:
Instead of cutting away large portions of material as waste, the design uses the natural shapes of forged components that fit together. The potential waste from forging is converted into a benefit by designing the clamp and plate shapes to assemble directly into the final frame geometry, eliminating the need for time-consuming subsequent CNC cutting.
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 significantly reduces material waste, improves processing efficiency, and lowers costs by achieving a high utilization rate of raw materials, while maintaining structural integrity and aesthetics.
Implementation Method 1
applying a force to the border frame to deform at least one of the riveting groove and the riveting projection, such that the riveting projection is latched in the riveting groove
Data Source
AI summary
The present disclosure discloses a process of processing a middle frame of a mobile phone, which includes: providing at least two metal components, each of the metal components defining a riveting groove; providing a metal middle plate having a riveting projection at edges thereof; correspondingly mounting each of the metal components on the edges of the metal middle plate to form a border frame surrounding the metal middle plate, respectively; the riveting projection being received in the riveting groove of the metal component, the riveting projection being in clearance fit with the riveting groove; and applying a force to the border frame to deform at least one of the riveting groove and the riveting projection, such that the riveting projection is latched in the riveting groove, and the border frame and the metal middle plate are connected to form the middle frame of the mobile phone.