Laser-Assisted Micromachining Temperature Control for Tool Stability
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Solution Overview
Problem
The existing laser assisted micromachining systems face challenges in maintaining stable temperature control during the machining of hard materials, leading to fluctuations in tool and tool carrier dimensions, which reduces machining precision and increases production time due to heat accumulation and uneven temperature distribution.
Innovation Solution
A temperature control system is introduced, comprising a cooler with a coolant, temperature sensors, and a controller using closed-loop automatic control to maintain the tool module's temperature within a set range, dynamically adjusting the coolant's flow rate and flow speed to prevent heat accumulation and ensure stable temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If laser power is increased to improve cutting performance and reduce material strength, then the cutting ability is improved, but heat accumulates on the tool and tool carrier causing temperature fluctuation and dimensional changes
Solution Approach 1:
The patent introduces a temperature control system as an intermediary between the laser heating process and the tool carrier. This system includes temperature sensors that detect carrier temperature and controllers that adjust cooling water flow rate and temperature in real-time, acting as a mediator to prevent excessive heat accumulation while maintaining the laser cutting process
Solution Approach 2:
The patent implements a closed-loop feedback control system where temperature sensors continuously monitor the tool carrier temperature and feed this information back to the controller. The controller then adjusts the cooling water parameters accordingly, creating a dynamic feedback mechanism that maintains temperature stability despite variations in laser power and cutting speed
2Productivity
If cutting speed is increased to improve productivity, then production efficiency is improved, but heat accumulates faster on the tool carrier causing temperature instability
Solution Approach 1:
The patent employs dynamic control of the cooling water system, where the cooling parameters are not fixed but are continuously adjusted based on real-time temperature measurements. The controller dynamically modifies cooling water flow rate and temperature according to the actual thermal state of the tool carrier, enabling the system to adapt to varying cutting speeds and maintain temperature stability
Solution Approach 2:
The feedback control mechanism continuously monitors tool carrier temperature and adjusts cooling water parameters in real-time. This closed-loop feedback ensures that even at high cutting speeds where heat accumulates rapidly, the temperature stability is maintained through prompt and proportional cooling adjustments
3Strength
If laser assisted micromachining is used to process hard materials, then machining capability is improved, but thermal expansion and contraction of the tool carrier reduces machining precision
Solution Approach 1:
The patent uses temperature sensors to continuously monitor tool carrier temperature and feeds this data back to the controller. This feedback enables real-time detection of thermal conditions that would cause expansion or contraction, allowing the system to maintain dimensional precision throughout the machining process
Solution Approach 2:
The temperature control system acts as an intermediary that decouples the thermal effects of laser processing from the tool carrier dimensions. By introducing active cooling control between the laser heating process and the tool carrier structure, the system prevents thermal expansion and contraction that would otherwise compromise machining precision
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 solution stabilizes the temperature of the tool and tool carrier, improving machining precision by preventing thermal expansion and contraction, thus enhancing the quality and efficiency of the micromachining process.
Implementation Method 1
providing a focused laser beam on the surface of the workpiece where it should be processed, so that an area of the material is softened due to high temperatures
Implementation Method 2
A temperature control system is introduced, comprising a cooler with a coolant... dynamically adjusting the coolant's flow rate and flow speed to prevent heat accumulation
Implementation Method 3
The cooler... dynamically adjusting the coolant's flow rate and flow speed to prevent heat accumulation and ensure stable temperature
Implementation Method 4
A temperature control system is introduced, comprising a cooler with a coolant, temperature sensors, and a controller using closed-loop automatic control
Implementation Method 5
If the heat is not released in time, it is easy to lead to the surface temperature of tool carrier fluctuates greatly... according to the principle of heat expansion and contraction, the dimension of the tool and tool carrier changes with the temperature
Data Source
AI summary
A laser assisted micromachining system, includes a working sliding, a tool module, a laser module, and a temperature control module for the processing of a workpiece. The laser module is disposed in the working slide and moves with the working slide in three-dimensional space. The temperature control module includes a temperature sensor, a cooler, a controller and a coolant, which detects the real-time temperature value of the cooler. The cooler is located in the working slide and supports the tool module. The controller controls the working state of the cooler according to the temperature feedback. Control signal induced by the temperature indicator, and the working state of the cooler are controlled by the controller. The coolant is used to control the temperature distribution of the cooler in the setting range. At the same time, the invention also provides a temperature control method for the laser assisted micro machining system.