Weld bead dimension zero-lag real-time detection device for arc additive manufacturing and real-time detection method

A technology of additive manufacturing and real-time detection, applied in measurement devices, optical devices, instruments, etc., can solve the problems of non-lag detection, inability to realize the width and height of the cladding channel, and achieve the effect of non-lag visual sensing

Inactive Publication Date: 2017-05-10
HARBIN INST OF TECH
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the prior art cannot realize the hysteresis-free detection of the width and height of th

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
  • Weld bead dimension zero-lag real-time detection device for arc additive manufacturing and real-time detection method
  • Weld bead dimension zero-lag real-time detection device for arc additive manufacturing and real-time detection method
  • Weld bead dimension zero-lag real-time detection device for arc additive manufacturing and real-time detection method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Specific implementation mode 1: the following combination figure 2 This embodiment will be described. The device for real-time detection of the size of the welded bead for arc additive manufacturing described in this embodiment includes a partitioned light reduction element 100, a line structure light generator 101, a filter 102, and a CCD camera 108 And lens 109;

[0017] The lens 109 is installed at the front end of the imaging target surface 107 of the CCD camera 108, and a filter 102 is installed at the front end of the lens 109. The laser stripe 103 emitted by the line structure light generator 101 is projected to the rear of the molten pool 104, and the laser stripe 103 and There is a distance between the molten pool 104, the welding torch 106 is vertically arranged directly above the molten pool 104, and the arc 105 generated by the welding torch 106 is located at the upper end of the molten pool 104;

[0018] A partitioned light reduction element 100 is installed be...

Example Embodiment

[0020] Specific implementation manner 2: the following combination figure 2 To describe this embodiment, this embodiment will further explain the first embodiment. The partitioned light-reducing element 100 is composed of light-reducing sheets of different sizes and different light transmittances.

[0021] In this embodiment, different regions of the partitioned light-reducing element 100 have different light transmittances. Therefore, the arc 105 generated by the welding torch 106, the molten pool 104, and the laser stripes 103 projected by the line structure light generator 101 onto the welding channel are all It can image clearly on the imaging target surface 107 of the CCD camera 108.

Example Embodiment

[0022] Specific implementation manner three: the following combination figure 2 To explain this embodiment, the real-time detection method of the non-lag real-time detection device for the size of the arc additive manufacturing welding channel described in this embodiment can realize a CCD visual image and simultaneously see the high-temperature deposited metal and laser Stripe 103, to realize the non-lag real-time detection of the size of the arc additive manufacturing welding channel. The specific method is: the partition light-reducing element 100 controls the light input of the molten pool 104 to be lower than the light input of the laser stripe 103, so that the partition is light-reduced and then deposited The metal spectral radiation intensity is the same as the light intensity level of the laser stripe 103.

[0023] In the present invention, in the arc additive manufacturing, the four light sources are sorted according to the decreasing average brightness, in order: arc ar...

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

A weld bead dimension zero-lag real-time detection device for arc additive manufacturing and a real-time detection method belong to the field of intelligent additive manufacture and are intended to solve the problem that the prior art is unable to provide zero-lag detection for weld bead width and height. The weld bead dimension zero-lag real-time detection device comprises a zonal dimming element, a linear-structure optical generator, an optical filter plate, a CCD (charge coupled device) camera and a head; the head is mounted at the front end of an imaging target face of the CCD camera, the optical filter plate is mounted at the inner front end of the head, a laser stripe emitted by the linear-structure optical generator is cast to the rear of a molten bath, the laser stripe and the molten bath are spaced, a welding torch is vertically disposed right above the molten bath, electric arc generated by the welding torch is positioned at the upper end of the molten bath, and the zonal dimming element is mounted between the imaging target face of the CCD camera and the head. The weld bead dimension zero-lag real-time detection device and the real-time detection method are used for arc additive manufacture and are also suitable for arc welding.

Description

technical field [0001] The invention belongs to the field of intelligent additive manufacturing. Background technique [0002] In arc additive manufacturing, how to detect the width and height information of the welding path in real time without lag is a key issue. [0003] Welding bead size belongs to geometric information, which is suitable for non-contact inspection with vision sensor. Existing visual detection methods include line structured light active visual detection and CCD passive visual detection, both of which have certain limitations. [0004] The line structured light sensor is a commonly used active vision sensor, which can detect the width and height information of the welding path at the same time. However, in order to prevent the arc light from interfering with the visual sensing of line structured light, a baffle needs to be added between the sensor and the welding torch to block the arc light, and the sensing position has a certain distance (about 35mm)...

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
IPC IPC(8): G01B11/02G01B11/06
CPCG01B11/02G01B11/0608
Inventor 张广军韩庆璘金宇鹏赵慧慧
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap