Laser Machine Suction Control for Powder Flow and Particle Removal
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Solution Overview
Problem
Existing laser machine tools face challenges in efficiently suctioning particles during and after the machining process, as the suction power is often not adjustable, leading to incomplete particle removal and potential contamination risks when the process chamber is opened.
Innovation Solution
A machine with a suction system that allows for adjustable suction power, operating at reduced power during machining to prevent disturbance of the material powder flow and switching to maximum power after the process to ensure complete particle removal before opening the chamber door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the suction apparatus operates at maximum power during the machining process, then particle removal efficiency is improved, but the material powder flow is disturbed
Solution Approach 1:
The suction apparatus dynamically adjusts its operating power based on the process state. During machining, it operates at reduced power to maintain stable material powder flow. After machining completes, it switches to maximum power to efficiently remove accumulated particles. This dynamic power adjustment resolves the contradiction between particle removal efficiency and material powder flow stability.
2Manufacturing precision
If the suction apparatus operates at reduced power during machining, then material powder flow stability is maintained, but particle accumulation occurs in the process chamber
Solution Approach 1:
The suction apparatus employs periodic action by switching between two operational phases: during machining, it operates at reduced power to avoid disturbing material powder flow; after machining completes, it operates at maximum power to remove accumulated particles. This periodic switching pattern effectively manages both material powder flow stability and particle accumulation prevention.
3Object-generated harmful factors
If the suction power is fixed at maximum, then particle removal is efficient, but energy consumption increases and material powder flow is disrupted
Solution Approach 1:
The suction apparatus changes its operating parameter (power level) based on process requirements. During machining, it operates at reduced power to minimize energy consumption and avoid disrupting material powder flow. After machining, it switches to maximum power for efficient particle removal. This parameter change strategy optimizes both energy efficiency and particle removal effectiveness.
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
This approach effectively removes harmful particles from the process space, ensuring operator and environmental safety by ensuring all air in the chamber is exchanged before the door is opened, thus preventing contamination.
Implementation Method 1
A suction apparatus is usually provided which generates an air flow in the process space in order to remove particles from a zone in which the laser beam acts on the material powder
Data Source
AI summary
A machine for machining workpieces and/or for producing molded bodies by location-selective solidification of material powder to form connected regions by means of a focused laser beam, including: a process chamber which can be closed by a process chamber door and which encloses a process space, a material powder container cabinet, which can be closed by a door, for storing material powder, and a suction system. The suction system has a fan for generating an air flow, a first suction apparatus fluidically connected to the fan by a first waste air duct to suction particles out of the process space, and a second suction apparatus fluidically connected to the fan by a second waste air duct to suction particles out of the material powder container cabinet. The first suction apparatus has means for controlling its suction power and/or the second suction apparatus has means for controlling its suction power.