Articulating Arm Friction Brake for Stable Heavy Component Handling
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Solution Overview
Problem
Existing articulating arms used in semiconductor processing chambers face challenges with sway and excess friction due to the use of bearings, making it difficult to assemble and disassemble heavy or bulky components, particularly in complex and large chambers.
Innovation Solution
The introduction of a friction brake mechanism in the articulating arms, which includes a tension block and tension screw, allows for controlled application of friction to manage the articulating linkages, providing stability and control during assembly and disassembly of chamber components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If bearings are used in articulating arms, then smooth movement is achieved, but sway and excess friction occur making assembly difficult
Solution Approach 1:
The patent changes the friction parameter from unwanted (bearings) to controlled (friction brake). By introducing an adjustable friction brake mechanism with a tensioning member, the system transforms the nature of friction from a harmful uncontrolled force to a beneficial controllable force that stabilizes the articulating arm during assembly operations.
Solution Approach 2:
The patent converts the harmful effect of friction and sway into a beneficial stabilizing force. The friction brake mechanism uses controlled friction to eliminate the problematic sway that occurs with bearings, transforming what was previously a harmful oscillation into a useful damping effect that aids assembly operations.
2Adaptability or versatility
If conventional articulating arms are used, then basic articulation is achieved, but control and stability are insufficient for heavy components
Solution Approach 1:
The patent introduces a dynamic control mechanism that allows the friction brake to be adjusted during operation. The tensioning member can be tightened or loosened to provide variable friction control, enabling the system to adapt to different load conditions and component weights while maintaining stable control throughout the articulation range.
Solution Approach 2:
The friction brake acts as an intermediary between the articulating arm segments and the shaft. This intermediate frictional contact provides controlled resistance that enhances stability without preventing necessary movement, serving as a mediator that balances the need for articulation with the need for control.
3Reliability
If friction brake is introduced, then control and stability improve, but device complexity increases
Solution Approach 1:
The friction brake mechanism is integrated into the existing articulating arm structure, allowing the same assembly to serve both as a structural linkage and as a controlled braking system. The tensioning member integrates multiple functions: adjusting friction, stabilizing the arm, and controlling movement, thereby reducing the need for separate dedicated components.
Solution Approach 2:
The friction brake mechanism is designed to be self-regulating through the adjustable tensioning member. Once the tension is set, the system automatically provides appropriate friction control without requiring active intervention or complex control systems, allowing the mechanism to self-adjust to varying operational conditions.
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
The friction brake design enables precise control over articulating arms, allowing for the handling of heavy components with reduced sway and improved assembly/disassembly efficiency, overcoming the limitations of conventional systems.
Implementation Method 1
a friction brake that includes a tension block and a tension screw
Data Source
AI summary
Exemplary articulating arms include a first articulating arm segment, a second articulating arm segment, and an articulating linkage movably connecting the first articulating arm segment and the second articulating arm segment. An articulating linkage includes a shaft having a first end and a second end, the shaft extending through the first articulating arm segment and the second articulating arm segment, and a friction brake comprising a tension block and a tension screw. Articulating arms include where the second end of the shaft is disposed in an aperture extending through the tension block, and the tension screw extends through the tension block in a direction generally perpendicular to the aperture.