Helical Bit Powder Feeder Modular Cylinder Assembly
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Solution Overview
Problem
Conventional powder feed apparatuses in laser welding systems are complex and time-consuming to repair, leading to prolonged downtime due to their intricate design, which complicates the delivery of a uniform and constant powder feed rate.
Innovation Solution
A simplified powder feed cylinder assembly with a helical channel on the bit and powder retention assemblies ensures a consistent powder delivery rate, featuring a modular design for easy maintenance and replacement, reducing repair time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional powder feed apparatus are used, then powder delivery function is achieved, but device complexity increases and repair time increases
Solution Approach 1:
The powder feed apparatus is divided into modular components including a powder feed cylinder assembly, bit assembly, and retention assemblies that can be independently removed and replaced. The bit assembly with helical channel is designed as a separate replaceable unit, allowing rapid replacement without disassembling the entire powder feed system.
Solution Approach 2:
The bit assembly with helical channel is extracted as a separate functional component from the main powder feed cylinder. This extracted bit assembly can be independently replaced when worn, eliminating the need to repair or replace the entire powder feed apparatus.
2Manufacturing precision
If conventional powder feed apparatus are used, then powder delivery function is achieved, but powder delivery uniformity decreases
Solution Approach 1:
A helical channel is formed on the outer surface of the bit, creating a curved screw-like structure that uniformly conveys powder particles along its spiral path. This curved geometry ensures consistent powder flow and uniform delivery rate to the laser melting zone.
Solution Approach 2:
The helical channel on the rotating bit automatically conveys powder from the powder source through the cylinder to the delivery point without requiring additional mechanical feed mechanisms. The rotation of the bit itself performs the powder conveying function, simplifying the overall apparatus while maintaining uniform delivery.
3Ease of repair
If simpler powder feed design is used, then ease of repair is improved, but powder retention capability may worsen
Solution Approach 1:
The powder feed cylinder assembly is segmented into functional zones with retention assemblies positioned at specific locations within the cylinder. These retention assemblies create controlled powder flow paths while maintaining the simplified modular structure that enables easy replacement.
Solution Approach 2:
Retention assemblies act as intermediary components within the simplified cylinder structure, mediating between the powder source and the delivery point. These intermediaries ensure proper powder retention and controlled flow without requiring complex mechanical feed mechanisms.
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 improved powder feeder achieves a uniform and constant powder delivery rate, significantly reducing downtime for maintenance and allowing for quicker repairs, enhancing operational efficiency.
Implementation Method 1
The bit has a helical channel formed on an outer surface of the bit. The helical channel is configured to convey powder from the first feed channel to the second feed channel
Data Source
AI summary
Powder feed cylinder assemblies and powder feeders are provided. A powder feed cylinder assembly includes a cylinder, a bit, and bushings. The cylinder has a main passage, a first feed channel, and a second feed channel, each feed channel at two axial locations between the cylinder's two ends. The bit extends through the main passage and has an outer surface including a helical channel formed thereon. A center bushing is disposed in the main passage between the two axial locations and has a first axially-extending passage through which the bit extends. The first end bushing is disposed in the main passage on one side of the center bushing and has a second axially-extending passage through which the bit extends. The second end bushing is disposed in the cylinder on the other side of the center bushing and has a third axially-extending passage through which the bit extends.