Laser heating-assisted milling device capable of real-time monitoring tool wear

A laser heating and milling device technology, applied in milling machine equipment, manufacturing tools, metal processing, etc., can solve the problems of parts processing quality, serious milling cutter wear, and reduce processing efficiency, so as to save the time of milling cutter wear monitoring, Improved efficiency and high sensitivity

Active Publication Date: 2016-12-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the materials processed by laser heating milling are usually difficult-to-machine materials for aerospace. Even if laser heating milling is used for processing, the wear of the milling cutter is relatively serious, which has a great impact on the processing quality of the parts. At the same time, it is necessary to remove the tool frequently The measurement of the wear value of the milling cutter greatly reduces the processing efficiency, and also brings about the problem of positioning when the milling cutter is clamped for the second time.

Method used

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  • Laser heating-assisted milling device capable of real-time monitoring tool wear
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  • Laser heating-assisted milling device capable of real-time monitoring tool wear

Examples

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Effect test

Embodiment 1

[0039] figure 1 It is a schematic diagram of a laser heating-assisted milling device capable of monitoring tool wear in real time. The device includes a CNC milling machine table 1, a fixture 2, a workpiece 3, an acoustic emission sensor unit 4, a milling cutter 5, a milling machine spindle 6, and a laser focusing head An adjustment device 7 , a laser focusing head 8 , an optical fiber 9 , a laser 10 , a signal processing module 11 , a data acquisition and processing module 12 , and an industrial computer 13 .

[0040] Wherein the workpiece 3 is fixed on the CNC milling machine workbench 1 after being installed on the fixture 2, and above the workpiece 3 is a milling cutter 5, and the milling cutter 5 is fixed on the milling machine spindle 6, and the acoustic emission sensor unit 4 includes A plurality of acoustic emission sensors, in the present embodiment, there are three acoustic emission sensors, and the acoustic emission sensors are installed on the side of the workpiece...

Embodiment 2

[0053] On the basis of the above embodiments, the real-time monitoring device further includes a current sensor, which is connected to the motor of the spindle, and transmits the received current signal of the spindle motor to the signal processing module 11 through a cable. After the current signal and the acoustic emission signal processed by the signal processing module 11 are finally transmitted to the industrial computer 13 after the data acquisition processing module 12, the industrial computer 13 selects LabVIEW software as the acquisition and analysis platform of data, and the current collected by wavelet transform The signal and the acoustic emission signal are analyzed and processed in real time, and compared with the preset threshold value to judge the damage of the milling cutter 5 . During the metal milling process, the milling force will change accordingly with the increase of the wear amount of the milling cutter 5, and the monitoring of the wear state of the mil...

Embodiment 3

[0055] On the basis of the above embodiments, the industrial computer 13 includes a terminal control module. The industrial computer 13 selects LabVIEW software as a data collection and analysis platform, and performs real-time analysis and processing on the collected signals through wavelet transform, compares and judges the terminal control module with the preset threshold value, and adjusts the laser and cutting parameters in time to wear the milling cutter 5 Perform real-time compensation to ensure that the machining accuracy requirements are fully met during the cutting process. If the threshold value is exceeded, the terminal control module will alarm and remind to replace the milling cutter 5 .

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Abstract

The invention discloses a laser heating-assisted milling device capable of real-time monitoring tool wear. The laser heating-assisted milling device capable of real-time monitoring tool wear comprises a milling device, a laser heating device and a real-time monitoring device. The milling device comprises a CNC (Computer Numerical Control) milling machine table, a milling cutter and a workpiece fixed to the CNC milling machine table; the laser heating device comprises a laser focus head; a laser light is incident on the surface of the workpiece through the laser focus head; the real-time monitoring device comprises a plurality of acoustic emission sensors, a signal processing module, a data acquisition processing module and an industrial personal computer; the acoustic emission sensors are arranged on the workpiece and are used for detecting acoustic emission signals of the milling cutter at a milling state; the acoustic emission signals are processed through the signal processing module and the data acquisition processing module and then are stored in the industrial personal computer; and through processing and analyzing, the real-time wear condition of the milling cutter is obtained.

Description

technical field [0001] The invention relates to a tool wear detection device, in particular to a laser heating assisted milling device which can monitor tool wear in real time. Background technique [0002] Laser heating assisted cutting technology is to focus a high-power laser beam on the surface of the workpiece in front of the cutting edge. In a short time before the material is cut, the local heating is heated to a very high temperature to change the machinability of the material at high temperature, and then Processing with cutting tools. By heating the material in a small local area, the plasticity of the material is improved while the yield strength of the material is reduced, the cutting force is reduced, the service life of the tool is extended, the generation of sawtooth chips is suppressed, and cutting chatter is prevented, so as to improve processing efficiency and reduce Cost, the purpose of increasing surface quality. [0003] Laser heating assisted milling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/00B23P25/00B23C9/00B23Q17/09
CPCB23C3/00B23C9/00B23P25/006B23Q17/0957
Inventor 杨立军孔宪俊王扬张宏志
Owner HARBIN INST OF TECH
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