本文選題：筒形件 + 焊接變形��； 參考：《中南大學(xué)學(xué)報(自然科學(xué)版)》2017年10期

【摘要】：針對傳統(tǒng)測量方式難以實(shí)現(xiàn)焊接條件下筒形件全場變形測量的問題,提出一種筒形件焊接三維全場靜態(tài)變形測量方法。首先,通過引入編碼點(diǎn)坐標(biāo)配準(zhǔn)方法,實(shí)現(xiàn)不同變形狀態(tài)下相同變形點(diǎn)的坐標(biāo)統(tǒng)一;其次,提出一種基于深度搜索的相同變形點(diǎn)匹配算法,實(shí)現(xiàn)焊縫區(qū)弱變形點(diǎn)的成功匹配;最后,根據(jù)以上關(guān)鍵技術(shù)并借助VS2010開發(fā)環(huán)境,研制出三維全場靜態(tài)變形測量系統(tǒng)。為驗(yàn)證該變形測量方法的可行性,設(shè)計(jì)并實(shí)施筒形件熔化極惰性氣體保護(hù)電弧焊(MIG)和激光焊焊接實(shí)驗(yàn),并采用標(biāo)定十字架進(jìn)行精度驗(yàn)證實(shí)驗(yàn)。研究結(jié)果表明:該方法測得的變形測量精度為0.020 mm/1 m,能夠?qū)崿F(xiàn)筒形件焊接三維全場靜態(tài)變形測量,具有非接觸、高精度和顯示直觀等優(yōu)點(diǎn),可為結(jié)構(gòu)件焊接三維全場靜態(tài)變形提供一種有效的測量方法。
[Abstract]:In order to solve the problem that it is difficult to realize the full-field deformation measurement of cylindrical parts under welding condition by traditional measurement method, a three-dimensional static deformation measurement method for cylindrical welding is proposed. Firstly, by introducing the coordinate registration method of coding points, the coordinate of the same deformation points in different deformation states is unified. Secondly, a matching algorithm of the same deformation points based on depth search is proposed to achieve the successful matching of weak deformation points in the weld zone. Finally, according to the above key technologies and with the help of VS2010 development environment, a 3D full-field static deformation measurement system is developed. In order to verify the feasibility of the deformation measurement method, the experiments of MIG and laser welding for cylindrical parts with inert gas arc welding were designed and carried out, and the precision verification experiments were carried out by using the calibration cross. The results show that the accuracy of deformation measurement is 0.020 mm/1 m, and the method can realize the three-dimensional static deformation measurement of cylindrical welding, which has the advantages of non-contact, high precision and visual display, etc. It can provide an effective measurement method for 3D static deformation of structural welding.
【作者單位】： 西安交通大學(xué)機(jī)械工程學(xué)院機(jī)械制造系統(tǒng)工程國家重點(diǎn)實(shí)驗(yàn)室;廣東西安交通大學(xué)研究院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51421004,51275378,51275389) 廣東省公益研究與能力建設(shè)專項(xiàng)資金資助項(xiàng)目(2014A010104003)~~
【分類號】：TG40

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