本文選題：金剛石工具 + 激光焊接��； 參考：《中原工學院》2017年碩士論文

【摘要】：激光焊接是近年來金剛石工具生產(chǎn)的一種重要技術(shù),激光焊接金剛石工具在焊接質(zhì)量上都要優(yōu)于傳統(tǒng)焊接,但激光焊接金剛石工具設(shè)備價格昂貴,柔性較差。本文針對金剛石工具焊接設(shè)備的焊接系統(tǒng)進行了設(shè)計分析,增加其柔性,實現(xiàn)一機多用,能夠焊接金剛石鋸片和金剛石鉆頭;同時借助有限元分析手段對所設(shè)計的焊接系統(tǒng),以金剛石鋸片為例,建立熱源物理模型,進行溫度場和應(yīng)變場的數(shù)值模擬與分析;找出一組較優(yōu)化焊接參數(shù),為技術(shù)人員在確定金剛石工具焊接參數(shù)時,提供一種優(yōu)化、經(jīng)濟的分析方法。焊接系統(tǒng)設(shè)計主要分為金剛石工具刀頭上料、基體上料、焊接頭裝置及機架四個部分。金剛石工具刀頭上料部分采用自動機械手抓取方式,由機械手抓取刀頭后擺動到焊接位置。金剛石工具基體上料部分采用可旋轉(zhuǎn)的兩工位工作臺,鋸片基體上下料采用自動方式,鉆頭基體上料及固定采用手動方式,焊接過程全部為自動方式。焊接頭裝置采用能夠?qū)崿F(xiàn)XYZ三個方向運動的結(jié)構(gòu)。在有限元模擬中,通過對鋸片的焊接分析,并根據(jù)激光深熔焊的原理建立了面-體熱源模型,利用ANSYS軟件中APDL命令流實現(xiàn)熱源的移動加載。在溫度場分析中,分析了激光主要參數(shù)對溫度場的影響,并根據(jù)截面熔池分析,找出能夠焊透的幾組焊接參數(shù)。在溫度場模擬的基礎(chǔ)上,用間接法模擬應(yīng)變場。通過應(yīng)變場的模擬,確定出優(yōu)化的焊接參數(shù)。并通過焊接實驗驗證,用與模擬相同的金剛石鋸片以及選擇出來的較優(yōu)化的焊接參數(shù)焊接進行焊接實驗,最后檢測其變形量是否滿足要求的方法。結(jié)果顯示,焊接質(zhì)量較好,與模擬結(jié)果吻合良好。
[Abstract]:Laser welding is an important technology in diamond tool production in recent years. Laser welding diamond tool is superior to traditional welding in welding quality, but laser welding diamond tool equipment is expensive and flexible. In this paper, the welding system of diamond tool welding equipment is designed and analyzed to increase its flexibility, to realize a multi-purpose machine, to weld diamond saw blade and diamond bit, and to make use of finite element analysis to weld the designed welding system. Taking diamond saw blade as an example, the physical model of heat source is established, and the numerical simulation and analysis of temperature field and strain field are carried out, and a set of optimized welding parameters is found, which provides an optimization for technicians in determining welding parameters of diamond tools. A method of economic analysis. The design of welding system is mainly divided into four parts: diamond tool tip feeding, substrate feeding, welding joint device and frame. The feeding part of diamond tool head adopts the automatic manipulator grasping method, which swinging to the welding position after grasping the cutter head. The diamond tool substrate is fed with two worktables which can be rotated, the saw blade substrate is fed automatically, the bit substrate is fed and fixed by manual method, and the welding process is automatic. The welding joint device adopts the structure which can realize the three directions motion of XYZ. In the finite element simulation, by analyzing the welding of saw blade and according to the principle of laser deep penetration welding, the surface body heat source model is established, and the moving load of heat source is realized by using APDL command flow in ANSYS software. In the analysis of temperature field, the influence of the main laser parameters on the temperature field is analyzed. According to the analysis of the weld pool of the cross section, several groups of welding parameters can be found out. Based on the simulation of temperature field, the strain field is simulated by indirect method. Through the simulation of strain field, the optimized welding parameters are determined. The welding experiments were carried out with the same diamond saw blade and the selected welding parameters. Finally, the method of testing whether the deformation of diamond saw blade meets the requirements was tested. The results show that the welding quality is good and the results are in good agreement with the simulation results.
【學位授予單位】：中原工學院
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TQ163;TN249

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