CN109848545A

CN109848545A - A laser processing method integrating object abnormal area recognition and thermal action

Info

Publication number: CN109848545A
Application number: CN201910016051.6A
Authority: CN
Inventors: 苏柏泉; 闫昊; 封晔; 吴凡; 弓艺; 匡绍龙; 汤劼
Original assignee: Beijing University of Posts and Telecommunications
Current assignee: Beijing Kemai Qiyuan Technology Co ltd
Priority date: 2019-01-08
Filing date: 2019-01-08
Publication date: 2019-06-07
Anticipated expiration: 2039-01-08
Also published as: CN109848545B

Abstract

The invention discloses a laser processing method integrating the identification and thermal action of an abnormal area of an object. The spatial motion trajectory is irradiated, and the laser heats the abnormal area to complete the treatment. The invention realizes the integrated processing of object recognition and laser heating in the abnormal area, and realizes the automation of the laser heat treatment in the abnormal area.

Description

A kind of laser processing method of integrated object abnormal area identification and heat effect

Technical field

The present invention relates to the laser processing methods of a kind of integrated object abnormal area identification and heat effect, belong to robot and swash Optical processing technique field.

Background technique

Laser is one of the usual way that material processing is taken.Currently, laser processing method relies on artificial given trace Heat effect processing is carried out to object.This laser heating method has following three: problem one, due to the experience of operator Deficiency, leading to abnormal area classification, there are a degree of identification error probabilities, thus there are the possibility of laser heating fault；It asks Topic two, due to experience difference between operator, it is variant that laser heats effect；Problem three, due to experienced operator Heating experience can not permanently survive, that is, its a large amount of invaluable experience of any operator is with its termination as human longevity And it disappears.Therefore, it is necessary to which laser heating method is carried out computerized algorithm, it is wrong to reduce the insufficient caused identification of operator's experience Accidentally rate and the following error handle；Need to guarantee the identity of laser heat treatment；It needs to heat laser and pass through It tests and carries out persistence by way of computer backup, storage and copy.

Summary of the invention

The present invention provides one kind by sweep object surface, identifies the texture and profile of abnormal area, structural anomaly region Three-dimensional structure, plan laser irradiation space motion path and laser heating abnormal area laser processing method.

To achieve the goals above, the present invention realizes that a kind of integrated object abnormal area is known by the following technical solutions Not with the laser processing method of heat effect, comprising:

The subject surface for including abnormal area is scanned, obtains including abnormal area and with textured subject surface Three-D profile；

The texture and profile of abnormal area on subject surface three-D profile are identified, i.e., by texture and profile with The corresponding relationship of abnormal area type, judges abnormal area and is classified；

Depth scan is carried out to abnormal area using depth transducer, in conjunction with the abnormal area surface three dimension wheel obtained Exterior feature, the three-dimensional structure in structural anomaly region；

Laser according to each abnormal area type and the photothermal mechanisms for being heated object, i.e. light irradiation time and light irradiate energy Metric density leads to each abnormal area type Properties of Objects variation relation, carries out laser photograph to the three-dimensional structure of abnormal area Penetrate space motion path (containing position and time) planning；

Kinematic system drives laser irradiation optical system, makes laser facula along the laser irradiation spatial movement rail planned Mark movement carries out laser heating to abnormal area.

The present invention has the advantages that

(1) it can get the three-dimensional structure of abnormal area；

(2) identification of achievable abnormal area is heated integrated with laser；

(3) automation of abnormal area laser heating can be achieved.

Detailed description of the invention

Fig. 1 is work flow diagram of the invention.

Specific embodiment

Purpose, technological means and effect to facilitate the understanding of the present invention etc., below in conjunction with attached drawing to the present invention Specific embodiment elaborates.The embodiments described below with reference to the accompanying drawings are exemplary, is only used for explaining this hair It is bright, and be not considered as limiting the invention.

The present invention provides a kind of technical solution: a kind of laser treatment side of integrated object abnormal area identification and heat effect Method, comprising: sweep object surface identifies texture and abnormal area profile, judged abnormal area and classified, structural anomaly The three-dimensional structure in region plans that laser irradiation space motion path, laser heat abnormal area to complete to handle.

Specific steps are as follows: to include abnormal area subject surface be scanned, obtain include abnormal area and have line The subject surface three-D profile of reason.The texture and profile of abnormal area on subject surface three-D profile are identified, i.e., it is logical The corresponding relationship for crossing texture and profile and abnormal area type, judges abnormal area and is classified.Utilize depth transducer Depth scan is carried out to abnormal area, in conjunction with the abnormal area surface tri-dimensional profile obtained, the three-dimensional in structural anomaly region Stereochemical structure.Laser according to each abnormal area type and the photothermal mechanisms for being heated object, i.e. light irradiation time and light irradiation Energy density leads to each abnormal area type Properties of Objects variation relation, carries out laser to the three-dimensional structure of abnormal area Irradiate space motion path (containing position and time) planning.Kinematic system drives laser irradiation optical system, makes laser facula edge Planned laser irradiation space motion path movement, to abnormal area carry out laser heating.

The course of work:

The subject surface for including abnormal area is scanned, obtains including abnormal area and with textured subject surface Three-D profile.The texture and profile of abnormal area on subject surface three-D profile are identified, that is, pass through texture and profile With the corresponding relationship of abnormal area type, abnormal area is judged and is classified.Using depth transducer to abnormal area into Row depth scan, in conjunction with the abnormal area surface tri-dimensional profile obtained, the three-dimensional structure in structural anomaly region.Foundation The laser of each abnormal area type and the photothermal mechanisms for being heated object, i.e. light irradiation time and light irradiation energy density cause respectively Abnormal area type Properties of Objects variation relation carries out laser irradiation spatial movement rail to the three-dimensional structure of abnormal area Mark (containing position and time) planning.Kinematic system drives laser irradiation optical system, makes laser facula along the laser planned Space motion path movement is irradiated, laser heating is carried out to abnormal area.

Claims

1. a laser processing method of integrated object abnormal area identification and thermal action, is characterized in that, comprises:

Scan the surface of the object including the abnormal area to obtain the three-dimensional contour of the object surface including the abnormal area and with texture;

Identify the texture and contour of the abnormal area on the three-dimensional contour of the object surface, that is, judge and classify the abnormal area through the corresponding relationship between the texture and contour and the type of the abnormal area;

The abnormal area is deeply scanned by the depth sensor, and the three-dimensional structure of the abnormal area is constructed by combining the obtained three-dimensional surface contour of the abnormal area;

According to the photothermal mechanism of the laser of each abnormal area and the heated object, that is, the relationship between the properties of the objects in each abnormal area caused by the light irradiation time and the light irradiation energy density, the three-dimensional structure of the abnormal area is subjected to laser irradiation. location and time) planning;

The motion system drives the laser irradiation optical system, so that the laser spot moves along the planned laser irradiation space motion trajectory, and laser heating the abnormal area.

2 . The laser processing method for integrating the identification of abnormal regions of objects and thermal action according to claim 1 , wherein the abnormal regions can be multiple discontinuous or adjacent, different types of multiple abnormal area.

3 . The laser processing method for integrating identification of abnormal regions of objects and thermal action according to claim 1 , wherein the laser heating includes non-abnormal regions and abnormal regions removed by the method. 4 .

4 . The laser processing method for integrating identification of abnormal regions of objects and thermal action according to claim 1 , wherein the laser spot can be the center of any cross-section of the laser beam. 5 .

5 . The laser processing method for integrating the identification of abnormal regions of objects and thermal action according to claim 1 , wherein the motion system can be composed of mechanical structures and electrical components according to specific applications. 6 .

6 . The laser processing method for integrating the identification of abnormal regions of objects and thermal action according to claim 1 , wherein the spatial motion trajectory of the laser irradiation can be determined using a numerical simulation analysis method. 7 .

7 . The laser processing method for integrating the identification of abnormal regions of objects and thermal action according to claim 1 , wherein the laser can select different wavelengths and powers according to the types of abnormal regions. 8 .

8 . The laser processing method integrating the identification of abnormal area of an object and thermal action according to claim 1 , wherein the laser irradiation optical system can choose a variety of specific optical path designs to realize the laser beam output. 9 .

9 . The laser processing method for integrated object abnormal area identification and thermal action according to claim 1 , wherein the depth sensor can be a contact type or a non-contact type, and the precision can be selected according to processing requirements. 10 .

10 . The laser processing method integrating the identification of anomalous regions of an object and thermal action according to claim 1 , wherein the photothermal mechanism of the laser and the heated object can be determined by searching literature or through experiments. 11 .