Mobile Terminal Middle Frame Stamping and Tube Cutting
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Solution Overview
Problem
The existing CNC method for manufacturing mobile terminal middle frames is inefficient, requiring a long processing time and significant material wastage, leading to high production costs.
Innovation Solution
A method involving stamping elongated protrusions on a metal plate, bending it into a tubular blank, and cutting it into annular pieces to form multiple middle frames, minimizing material waste and enabling simultaneous production of multiple frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If CNC method is used to manufacture middle frame, then manufacturing precision can be achieved, but production time is long and material wastage is significant
Solution Approach 1:
The metal plate is pre-formed with protrusions and grooves before the final cutting operation. These preliminary features guide the subsequent cutting process and ensure accurate positioning, allowing the CNC system to focus only on final dimensional refinement rather than removing large amounts of material, thus reducing both time and material wastage while maintaining precision
Solution Approach 2:
The middle frame manufacturing process is divided into distinct stages: forming protrusions and grooves on the metal plate, positioning the plate, and performing targeted cutting operations. This segmentation allows each operation to be optimized independently, improving overall productivity while maintaining manufacturing precision through controlled, sequential processing
2Manufacturing precision
If CNC method is used to manufacture middle frame, then manufacturing precision can be achieved, but material wastage is significant
Solution Approach 1:
Protrusions and grooves are formed on the metal plate before cutting operations. These features serve as positioning references and material guides, enabling precise cutting with minimal material removal. The preliminary forming allows the CNC system to accurately locate and cut only the necessary portions, significantly reducing material wastage while maintaining dimensional accuracy
Solution Approach 2:
The manufacturing approach changes from direct CNC cutting of solid metal plate to a multi-step process involving forming protrusions and grooves that alter the material distribution. This parameter change in material configuration allows for more efficient material utilization during cutting, reducing wastage while maintaining the precision of the final middle frame dimensions
3Manufacturing precision
If traditional manufacturing method is used, then single middle frame is produced, but production cost and production period are high
Solution Approach 1:
Multiple middle frames are manufactured simultaneously by forming multiple protrusions on the metal plate and performing cutting operations that produce several finished frames in one production cycle. This merging of multiple production operations into a single process maintains the manufacturing precision of individual frames while dramatically reducing the total production period and associated costs
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 approach reduces production costs and time by minimizing material wastage and allowing for the simultaneous production of multiple middle frames, improving efficiency and cost-effectiveness.
Implementation Method 1
forming a tubular blank by bending the metal plate
Data Source
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AI summary
The present disclosure provides a method for manufacturing a middle frame for mobile terminal and a mobile terminal with a middle frame. The method may include: providing (S101, S201) a metal plate (10); forming (SI02) a number of elongated protrusions (11) arranged in parallel on the metal plate (10), the elongated protrusions (11) each extending along a length direction of the metal plate (10); forming (S103, S205) a tubular blank (10a) by bending the metal plate (10) such that each of the elongated protrusions (11) extends around the tubular blank (10a); and cutting (S104, S206) the tubular blank (10a) into a number of annular pieces (15), wherein each of the annular pieces (15) includes one of the elongated protrusions (11).