Collection Nozzle Suction Design for Machining By-Product Removal
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Solution Overview
Problem
By-products such as vapor, dust, and debris from machining processes, especially with laser-based systems, often scatter and adhere to workpieces and machine optics, degrading the quality of the workpiece and machine performance, and contaminating the environment if not properly collected.
Innovation Solution
A fluid-based collection system comprising a fluid nozzle to induce a flow, a collection nozzle with a motive nozzle to accelerate the fluid, an exhaust chamber, and an induced-suction nozzle to create a suction force that collects and removes by-products from the workpiece area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a fluid-based collection system with multiple nozzles and chambers is used, then the ability to collect and remove by-products is improved, but the device complexity increases
Solution Approach 1:
The collection nozzle integrates multiple functions into a single component: the motive nozzle accelerates fluid to create a jet flow, the exhaust chamber receives and directs this flow, and the induced-suction nozzle utilizes the resulting low-pressure region to draw in by-products. This merging of acceleration, exhaust, and suction functions into one integrated nozzle structure improves by-products removal while managing device complexity.
Solution Approach 2:
The system employs fluid dynamics principles where a motive nozzle accelerates fluid to generate a jet flow that creates a low-pressure region (suction force) in the exhaust chamber. This pneumatic mechanism enables the induced-suction nozzle to draw in and remove by-products without requiring separate mechanical suction devices, thus improving removal efficiency while maintaining relatively simple device structure.
2Object-generated harmful factors
If the collection nozzle is disposed within the flow of fluid to create suction force, then the suction force is sufficient to carry material away from the workpiece, but the manufacturing precision of the nozzle assembly becomes more critical
Solution Approach 1:
The collection nozzle is designed with differentiated local functions: the motive nozzle portion is optimized for fluid acceleration, the exhaust chamber is configured for receiving and directing flow, and the induced-suction nozzle is shaped to maximize suction force generation. Each section has specific geometric characteristics tailored to its local function, enabling effective material removal while using standard manufacturing tolerances for each component.
Solution Approach 2:
The collection nozzle is divided into distinct functional segments: the motive nozzle (for fluid acceleration), the exhaust chamber (for flow reception and direction), and the induced-suction nozzle (for by-products intake). This segmentation allows each part to be manufactured and adjusted independently, reducing the cumulative precision requirements compared to a monolithic design while achieving the necessary overall performance.
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
Effectively prevents by-products from adhering to workpieces and machine optics, maintaining machining quality and air quality by efficiently removing debris and vapor from the machining area.
Implementation Method 1
a motive nozzle configured to receive a first portion of the flow of the fluid and accelerate the received portion of the flow of the fluid to generate an accelerated flow of the fluid
Implementation Method 2
an induced-suction nozzle configured to receive a second portion of the flow of the fluid. The induced-suction nozzle can be in fluid communication with the exhaust chamber, the collection nozzle can be configured such that a suction force is transmittable from the exhaust chamber to a collection region
Data Source
AI summary
An apparatus for collecting material from a workpiece from a machined workpiece includes a fluid nozzle for inducing a flow of a fluid and a collection nozzle. The collection nozzle includes a motive nozzle for accelerating a first portion of the fluid flow; and an induced-suction nozzle for receiving a second portion of the fluid flow. A suction force can be generated within a vicinity of the induced-suction nozzle based on the accelerated first portion of the fluid flow. The suction force can be sufficient to carry at least a portion of the material away from the workpiece. Related methods of collecting material from a workpiece are also disclosed, as are systems capable of incorporating the material apparatus collecting apparatus.