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Positioning ultrasonic testing device and positioning ultrasonic testing method for curved welding component

A technology for ultrasonic testing and welding parts, which is used in measurement devices, material analysis using sonic/ultrasonic/infrasonic waves, instruments, etc. It can solve the problems of difficult to achieve quantitative ultrasonic testing of complex curved parts.

Active Publication Date: 2017-06-13
JILIN UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide a positioning ultrasonic detection device and method for curved surface welded parts, which solves the problem that the mechanical mechanism driving the ultrasonic probe in the prior art is difficult to realize the quantitative ultrasonic detection of complex curved surface parts, and at the same time performs high-precision detection of internal defects of the workpiece. On-line quantitative scanning, and form numerical and image feedback through computer fitting

Method used

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  • Positioning ultrasonic testing device and positioning ultrasonic testing method for curved welding component
  • Positioning ultrasonic testing device and positioning ultrasonic testing method for curved welding component
  • Positioning ultrasonic testing device and positioning ultrasonic testing method for curved welding component

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Embodiment

[0078] A positioning ultrasonic detection method of a curved surface weldment based on a series-parallel hybrid mechanism, the specific implementation steps are as follows:

[0079] 1. Workpiece surface treatment: Before scanning the data, the surface of the vibration friction welding workpiece in the airbag area of ​​the automobile dashboard is dedusted, degreased, and coated with coupling agent to reduce the interference of impurities on the surface of the workpiece to the ultrasonic signal.

[0080] 2. Input the surface shape data of the scanned workpiece, and plan the placement position of the base of the multi-link robotic arm. The three-dimensional surface STP format data of the vibration friction welding workpiece in the airbag area of ​​the automobile dashboard is imported into the system through the USB interface, and the placement position of the multi-link manipulator base is planned through the spatial position that the ultrasonic probe can reach. The spatial dimen...

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Abstract

The invention relates to a positioning ultrasonic testing device and a positioning ultrasonic testing method for a curved welding component and belongs to the field of ultrasonic testing. An ultrasonic probe of a testing device is connected with an ultrasonic testing module; the ultrasonic testing module is connected with an industrial computer through a PCI bus; a multi-connecting rod mechanical arm is connected with the ultrasonic probe; the ultrasonic probe can realize the test for different spatial positions and postures; five angle sensors on the multi-connecting rod mechanical arm are used for converting the angle change of each connecting rod in the multi-connecting rod mechanical arm into an electric signal and feeding back to a data collecting card; the electric signal is inputted to the industrial computer through a USB connecting line. The testing method comprises the following steps: treating a workpiece surface, arranging the position of a multi-connecting rod mechanical arm base and scanning the workpiece surface. The problem of difficulty in realizing the quantitative ultrasonic testing of the complex surface of the ultrasonic probe driven by a mechanical mechanism is solved. The high-precision online quantitative scanning is performed on an internal defect of the workpiece and the computer is used for fitting and forming numerical value and feeding back the image.

Description

technical field [0001] The invention relates to the field of ultrasonic testing, in particular to a positioning ultrasonic testing device and method for curved surface welded parts, especially to a positioning ultrasonic testing device and method for curved surface welded parts based on a serial-parallel hybrid mechanism. Background technique [0002] Quantitative ultrasonic testing usually uses a mechanical mechanism to drive the ultrasonic probe. Through the control of the mechanical mechanism, the ultrasonic probe reaches a specific position and scans in a specific area. At each scanning point, the position information is fed back by the mechanical mechanism, the internal state of the workpiece is fed back by the ultrasonic probe, and then the defect information inside the workpiece can be obtained through computer fitting. However, if the surface curvature of the workpiece to be tested changes greatly, the design of the mechanical mechanism will be very complicated, and ...

Claims

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Application Information

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IPC IPC(8): G01N29/265
CPCG01N29/265G01N2291/0234G01N2291/0289G01N2291/101
Inventor 徐国成董娟王亭谷晓鹏
Owner JILIN UNIV
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