Dual-Width Saw Blade for Panel Level Package Cutting
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Solution Overview
Problem
Existing blades used for sawing panel level packages experience one-sided wear, leading to a reduced usage period and frequent replacement, as they are typically designed with a uniform width for cutting along either a short or long axial direction.
Innovation Solution
A blade configuration with a first blade portion for cutting along one direction and a second blade portion with a greater width for cutting along a perpendicular direction, along with a lifter to adjust the blade's position, allowing for dual-axis cutting to reduce wear and extend the blade's usage period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the blade has a uniform width for single-direction cutting, then the blade structure is simple, but one-sided wear occurs and the usage period is reduced
Solution Approach 1:
The blade is divided into two distinct blade portions: a first blade portion for cutting along the first direction and a second blade portion for cutting along the second direction. This segmentation allows each portion to be optimized for its specific cutting direction, distributing wear across both portions and extending the overall blade usage period despite the increased structural complexity.
2Ease of manufacture
If the blade has a uniform width for single-direction cutting, then the manufacturing is simple, but one-sided wear occurs and frequent replacement is needed
Solution Approach 1:
The blade is segmented into two functional portions with different widths optimized for their respective cutting directions. The second blade portion has a greater width than the first blade portion, allowing it to handle cutting along the second direction more effectively. This segmentation reduces wear on any single portion and extends blade life, reducing replacement frequency despite slightly increased manufacturing complexity.
3Duration of action of moving object
If the blade has greater width in the second direction, then wear is distributed and usage period is extended, but the blade structure becomes more complex
Solution Approach 1:
Different portions of the blade have different local qualities: the first blade portion has a narrower width optimized for cutting along the first direction, while the second blade portion has a greater width optimized for cutting along the second direction. This local quality differentiation allows each portion to perform its specific function efficiently, distributing wear and extending usage period while maintaining reasonable structural complexity.
Solution Approach 2:
The blade employs asymmetric design where the second blade portion has a greater width than the first blade portion. This asymmetry is intentional and functional, matching the different cutting requirements for the two directions. The asymmetric structure distributes cutting loads more evenly across the blade, reducing one-sided wear and extending the blade's service life despite the increased structural complexity.
Data Source
AI summary
A blade for sawing a panel, including a first blade portion configured to saw the panel along a first direction, wherein the panel includes a plurality of panel level packages (PLPs) arranged in the first direction and a second direction which is substantially perpendicular to the first direction; and a second blade portion arranged on an upper surface of the first blade portion, and configured to saw the panel along the second direction, wherein a width of the second blade portion is greater than a width of the first blade portion.