Portal Frame Rigidity for Precision Tear Processing
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Solution Overview
Problem
Existing airbag breaking groove formation devices face challenges in maintaining high precision tear processing accuracy and dimensional stability due to limited rigidity and vibration resistance, especially when coping with changes in workpiece types, leading to difficulties in efficiently performing high-precision tear processing with a specified residual thickness of ±5 µm.
Innovation Solution
A portal-shaped tear processing device with a predetermined internal structure, featuring a portal-shaped frame with column and beam members having an outer shell and filler portions, which enhances rigidity and vibration resistance, allowing for stable high-precision tear processing and easy adaptation to different workpiece types without reinstallation of the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional hexahedral frame structure is used, then the device can be manufactured with simple structure, but the rigidity and vibration resistance are insufficient to maintain high precision tear processing accuracy
Solution Approach 1:
The portal-shaped frame combines aluminum alloy material with hollow cylindrical internal structures, creating a composite structure that achieves high rigidity and vibration resistance while maintaining lightweight characteristics. The hollow cylinders act as structural reinforcements within the aluminum alloy frame, providing enhanced mechanical properties without significantly increasing weight or complexity.
2Adaptability or versatility
If the frame size is increased to accommodate different workpiece types, then adaptability improves, but vibration resistance and dimensional stability deteriorate
Solution Approach 1:
The portal-shaped frame is segmented into multiple hollow cylindrical structures distributed throughout the frame body. These segmented hollow cylinders are positioned at critical structural locations to provide localized reinforcement that maintains dimensional stability across the entire enlarged frame structure, enabling adaptability to different workpiece types without sacrificing stability.
3Length of moving object
If a compact frame is used, then the device has small footprint, but the stroke of controlled movement robot is limited and workpiece type changes require reinstallation
Solution Approach 1:
The portal-shaped frame with its enlarged dimensions and reinforced hollow cylinder structure serves multiple functions: it provides sufficient stroke length for controlled movement robots to accommodate different workpiece types, maintains dimensional stability for high precision processing, and eliminates the need for reinstallation when changing workpiece types. The universal design allows the same frame structure to handle various workpiece configurations.
4Manufacturing precision
If conventional frame materials are used, then manufacturing is simple, but thermal expansion and resonance occur affecting precision
Solution Approach 1:
The aluminum alloy frame incorporates hollow cylindrical structures with specifically designed dimensions, wall thicknesses, and spacing parameters. These parameter optimizations control the frame's thermal expansion characteristics and resonant frequencies, minimizing thermal effects and resonance that would otherwise affect tear processing precision. The hollow cylinders act as thermal barriers and vibration dampers.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
To provide a portal-shaped tear processing device which is capable of stably performing high precision tear processing. Provided is a portal-shaped tear processing device including: a portal-shaped frame; a rail member; a controlled movement robot; and a tear processing means, in which the column member and the beam member have an outer shell portion, a filling member enclosed in the outer shell portion, and a hollow portion boring the filling portion along a major axis direction of the column member and the beam member.