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                                                                                                                                                              您的位置>首頁>新聞動態> 機器視覺是如何實現激光焊縫追蹤系統?

                                                                                                                                                              發布時間: 2021-09-08    瀏覽量:482
                                                                                                                                                              激光焊縫追蹤系統,視覺檢測

                                                                                                                                                                隨著工業科學技術的發展,機器更換的地方越來越多,現在一些焊接工作交給了機器,其核心技術是:

                                                                                                                                                                激光焊接追蹤系統

                                                                                                                                                                激光束追蹤傳感器通過計算,將激光放大后投影到被測量物的表面,其反射光透過高質量的光學系統并投影到成像矩陣上,從而計算出從傳感器到被測量面的距離(z軸)和沿著激光光線的位置信息) x軸) 移動被測量物體或輪廓儀探針,可以得到一組三維測量值。 得到的信息可以實現焊接搜索定位、焊接跟蹤、自適應焊接參數控制、焊接成形檢測、向機器人單元實時傳遞信息,完成各種復雜的焊接,避免焊接質量的偏差,實現智能焊接。

                                                                                                                                                                激光焊接追蹤系統的原理是什么?

                                                                                                                                                              激光焊縫視覺檢測


                                                                                                                                                                焊接隨動傳感器主要由CCD攝像機、半導體激光、激光保護透鏡、防飛散擋板和空冷裝置組成。

                                                                                                                                                                利用光學傳播和成像原理,獲得激光掃描區域內各點的位置信息,用復雜的程序算法完成一般焊縫的在線實時檢測。

                                                                                                                                                                對檢測范圍、檢測能力及焊接中的常見問題有適當的功能設定。

                                                                                                                                                                傳感器通常以預先設定的距離(進給)安裝在焊槍的前部,因此安裝高度因焊接傳感器主體到工件的距離、即安裝的傳感器形式而異。

                                                                                                                                                                焊槍在焊道上正確定位后,攝像機將觀察焊道。

                                                                                                                                                                設備計算檢測到的焊接與焊槍之間的偏差,輸出偏差數據,運動執行機構實時修正偏差,準確引導焊槍自動焊接,從而實現與機器人控制系統通過實時通信追蹤焊接,讓機器人刮目相看

                                                                                                                                                                手工或半自動焊接通過操作者肉眼觀察和手工調節實現焊接追蹤。

                                                                                                                                                                在機器人和自動焊接專機等完全自動化的焊接APP應用中,主要根據機械的編程和存儲能力、工件及其組裝的精度和一致性,保證了焊槍在工藝允許的精度范圍內配合焊接。

                                                                                                                                                                通常,機器的重復定位精度、編程和存儲能力等都能滿足焊接的要求。

                                                                                                                                                                但是,在許多情況下,工件及其裝配的精度和一致性很難滿足大型工件和大量自動焊接生產的要求,其中也有過熱引起的應力和變形的影響。 因而,一旦遇到這些情況,就需要用于執行手工焊接中的人眼和手的協調跟蹤和調節這樣的功能的自動跟蹤裝置。

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