Additive Manufacturing Temperature Feedback for Stable Melt Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing additive manufacturing methods face disturbances in processing due to changes in heat input and temperature variations, leading to issues like ignition, rapid vaporization, deformation, and reduced manufacturing precision.
Innovation Solution
An additive manufacturing method that includes temperature measurement, correction of basic commands based on temperature data, and controlled supply of shaping material, heat source, and shielding gas to maintain precise temperature and prevent reactions, along with a system comprising a temperature measurement unit, control unit, shaping material supply unit, heat source supply unit, drive unit, and gas supply unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the amount of heat input to the shaping material is changed depending on the shape of each layer and manufacturing conditions, then the manufacturing flexibility is improved, but disturbance occurs including ignition, rapid vaporization, and deformation
Solution Approach 1:
The system measures the actual temperature of the shaping material and shaping portion during additive manufacturing, then feeds this temperature information back to the control unit. The control unit adjusts the heat source supply amount based on the temperature measurement results, creating a closed-loop control system that maintains processing stability while allowing manufacturing flexibility.
Solution Approach 2:
The system dynamically changes the heat source supply parameters (such as laser power, electron beam current, or plasma arc voltage) based on real-time temperature measurements and manufacturing conditions. This allows the system to adapt to different layer shapes and manufacturing requirements while preventing disturbances through continuous parameter optimization.
2Productivity
If the heat source supply amount is increased to improve manufacturing speed, then productivity is improved, but temperature deviation and deformation increase
Solution Approach 1:
The temperature measurement unit continuously monitors the temperature of the shaping material and shaping portion, providing real-time feedback to the control unit. This allows the system to maintain high manufacturing speed while preventing temperature deviation through dynamic adjustment of heat source supply based on actual temperature conditions.
Solution Approach 2:
The system transitions from static heat source supply to dynamic heat source supply that adapts in real-time to changing temperature conditions. The control unit continuously adjusts the heat source supply amount during manufacturing based on temperature measurements, enabling both high productivity and precise temperature control.
3Manufacturing precision
If temperature measurement and real-time correction are implemented, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The system incorporates a temperature measurement unit that provides real-time temperature data to the control unit, which then corrects the heat source supply commands. This feedback mechanism improves manufacturing precision by enabling dynamic compensation for temperature variations during the additive manufacturing process.
Solution Approach 2:
The temperature measurement unit acts as an intermediary between the heat source supply unit and the control system. By introducing this intermediate measurement component, the system achieves precise temperature monitoring and control without requiring complete redesign of the entire manufacturing system.
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
Achieves high-precision additive manufacturing by maintaining stable processing conditions and preventing disturbances, thereby improving manufacturing precision and reducing defects.
Implementation Method 1
a temperature measurement step of measuring a temperature of an object of processing or a shaping material and outputting the measured temperature as temperature data
Implementation Method 2
a heat source supply step of supplying a heat source to melt the shaping material supplied to the processing position to the processing position based on the heat source supply unit command
Implementation Method 3
a gas supply step of supplying, to the processing position, a shielding gas to prevent a reaction of the shaping material to the processing position based on the gas supply command
Data Source
AI summary
An additive manufacturing method includes a step of measuring a temperature of an object of processing or a shaping material and outputting temperature data, a step of correcting basic commands based on a basic processing program and the temperature data, and determining post-correction commands including a material supply command, a heat source supply unit command, a drive command, and a gas supply command, a step of supplying the shaping material to a processing position of a shaped article based on the material supply command, a step of supplying a heat source to melt the shaping material supplied to the processing position based on the heat source supply unit command, a step of changing the relative position between the processing position and the shaped article based on the drive command, and a step of supplying, to the processing position, a shielding gas based on the gas supply command.