Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A laser preheating processing system integrating real-time measurement and feedback control functions of temperature field

A real-time measurement and feedback control technology, used in metal processing, manufacturing tools, metal processing equipment, etc., can solve problems such as position state influence, achieve precise laser preheating temperature control, improve preheating efficiency, and shorten the preheating cycle. Effect

Active Publication Date: 2019-06-28
HUAZHONG UNIV OF SCI & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a laser preheating processing system integrating real-time temperature field measurement and feedback control functions, which is used to solve the problems of complex profiles, the position state of the laser relative to the workpiece surface, and the Given the influence of factors such as speed and laser power on the temperature field of the workpiece surface, to ensure that the temperature field of each pre-hot spot on the workpiece surface remains consistent and stable during the laser preheating process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A laser preheating processing system integrating real-time measurement and feedback control functions of temperature field
  • A laser preheating processing system integrating real-time measurement and feedback control functions of temperature field
  • A laser preheating processing system integrating real-time measurement and feedback control functions of temperature field

Examples

Experimental program
Comparison scheme
Effect test

example

[0040] Example: silicon nitride ceramic material workpiece

[0041] Workpiece cutting depth: 0.2mm

[0042] Spindle speed: 2000rpm

[0043] Feed speed: 12mm / min

[0044] Laser power: 300W

[0045] Spot diameter: 3mm

[0046] In this application example, since each processing point on the surface of the workpiece is at the same temperature, the surface roughness and residual stress can be small enough, the workpiece can be preheated and cut smoothly, and the residual stress on the surface after cutting is small. It is measured that the cutting hardening layer is small, and the surface roughness is small and uniform as measured by the surface topography instrument. Therefore, a laser preheating processing system with integrated temperature field real-time measurement and feedback control functions proposed by the present invention can achieve a constant temperature field and overcome the shortcomings of material properties and internal crystal phase changes caused by tempera...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a laser preheating machining system integrated with temperature field real-time measuring and feedback control functions. The system comprises a coaxial infrared temperature measuring laser head, a three-freedom-degree controllable clamp, a laser device, a laser device control unit, a clamp control unit, a data processing unit and a feedback adjusting unit. The system aims at comprehensively considering multiple factors affecting the surface temperature field of a laser preheated workpiece, real measurement temperature and preset target temperature are input to the data processing unit, a trained BP neural network model is optimized to be subject to data processing, laser power and compensation amount of three freedom degrees of the controllable clamp are output to the feedback adjusting unit, the compensation amount is loaded to the laser device and the controllable clamp to properly adjust the laser output power and the spot size and energy density, on the surface of the workpiece, of laser, and the surface of the preheated workpiece accurately reaches the preset target temperature. The system is high in automation degree, high in temperature feedback control precision, good in safety property and convenient to operate.

Description

technical field [0001] The invention relates to the fields of preheating auxiliary processing, temperature measurement and feedback control, and more specifically, relates to a laser preheating processing system integrating real-time measurement of temperature field and feedback control functions. Background technique [0002] With the rapid development of industrial technology in aviation, aerospace, navigation and other fields, the demand for high-performance product components is increasing, and various high-hardness and high-strength engineering materials are emerging. But at the same time, the improvement of material properties also brings new problems to machining and manufacturing. For example, high-temperature alloys have excellent high-temperature strength, good oxidation resistance and hot corrosion resistance, and good fatigue resistance and fracture toughness, etc., but if they are processed by conventional cutting methods, not only the tool wear is serious, but ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23P25/00B23Q17/00
CPCB23P25/006B23Q17/00
Inventor 张小俭马洪啸解亚昆李文龙丁汉
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com