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Piezoelectric ceramic precision displacement based laser resistor trimming method

A piezoelectric ceramic and laser resistance adjustment technology, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc. Effect

Active Publication Date: 2020-09-22
NANJING VOCATIONAL UNIV OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the laser cutting resistance adjustment type of chip resistors, the length of etching can be controlled by moving the chip resistors, or by moving the beam shaping head, but the laser adjustment of these two methods Resistance accuracy is relatively low

Method used

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  • Piezoelectric ceramic precision displacement based laser resistor trimming method
  • Piezoelectric ceramic precision displacement based laser resistor trimming method
  • Piezoelectric ceramic precision displacement based laser resistor trimming method

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Embodiment Construction

[0022] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0023] Such as Figure 1 to Figure 3 As shown, a laser resistance adjustment method based on piezoelectric ceramic precision displacement includes a beam shaping head 3, a piezoelectric ceramic displacement module 6 and a pulse laser 4, the pulse laser 4 is connected to the beam shaping head 3, and the piezoelectric The ceramic displacement module 6 is arranged in the beam shaping head 3, and the beam shaping head 3 is provided with a collimating lens 5, and the collimating lens 5 is used to ensure that the incident light can be shaped into parallel light, and the piezoelectric ceramic displacement module 6 is used to control the displacement of the collimating lens 5;

[0024] The piezoelectric ceramic control circuit is also provided in the bea...

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Abstract

The invention discloses a piezoelectric ceramic precision displacement based laser resistor trimming method which relates to the field of laser fine processing. The piezoelectric ceramic precision displacement based laser resistor trimming method comprises a beam shaping head, a piezoelectric ceramic displacement module and a pulse laser unit, wherein the pulse laser unit is connected to the beamshaping head; the piezoelectric ceramic displacement module is arranged in the beam shaping head; a collimating lens is arranged in the beam shaping head; the collimating lens is used for guaranteeingthat incident light can be shaped into parallel light; the piezoelectric ceramic precision displacement module is used for controlling displacement of the collimating lens; and etching length, on a sheet-shaped resistor, of a laser beam is precisely controlled through nano-scale displacement control, on the collimating lens in the beam shaping head, by the piezoelectric ceramic displacement module, so that displacement precision is high, resistance adjustable precision is high, and resistor elements of higher precision can be obtained.

Description

technical field [0001] The invention relates to the field of laser fine processing, in particular to a laser resistance adjustment method based on the precise displacement of piezoelectric ceramics. Background technique [0002] The laser trimming machine mainly uses a very fine laser beam to hit the chip resistor, and realizes the cutting of the chip resistor by vaporizing and evaporating the resistor. At the same time, the circuit is measured in real time, and the change of the resistance value of the chip resistor is monitored in real time. The resistance value of the chip resistor is constantly approaching the target resistance value. When the chip resistor reaches the target resistance value, the laser beam is turned off, and the laser resistance adjustment process is realized. [0003] In the laser cutting resistance adjustment type of chip resistors, the length of etching can be controlled by moving the chip resistors, or by moving the beam shaping head, but the laser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/38B23K26/70
CPCB23K26/38B23K26/70B23K26/702
Inventor 陈勇王晓勇吴修娟王蕾张涛李勤涛
Owner NANJING VOCATIONAL UNIV OF IND TECH
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