本文選題：鍛造操作機(jī) + 主運(yùn)動(dòng)機(jī)構(gòu)　； 參考：《燕山大學(xué)》2015年碩士論文

【摘要】：大型鑄鍛件是我國重大裝備制造業(yè)的重要基礎(chǔ)和關(guān)鍵瓶頸,而鍛造操作機(jī)是精確制造鍛件的基本裝備之一,用于夾持鍛件配合鍛壓機(jī)完成鍛壓工藝,是鍛造機(jī)械化與自動(dòng)化的重要設(shè)備。近年來,國內(nèi)外鍛造車間普遍應(yīng)用鍛造操作機(jī)與自由鍛造液壓機(jī)聯(lián)動(dòng)實(shí)現(xiàn)機(jī)械化操作,形成了自動(dòng)化的大型鍛件自由鍛造系統(tǒng),從而顯著地改善產(chǎn)品質(zhì)量,提高勞動(dòng)生產(chǎn)率。本文對操作機(jī)主運(yùn)動(dòng)機(jī)構(gòu)進(jìn)行了力學(xué)分析和運(yùn)動(dòng)學(xué)動(dòng)態(tài)仿真設(shè)計(jì)。首先提出一種操作機(jī)主運(yùn)動(dòng)機(jī)構(gòu)的計(jì)算機(jī)自動(dòng)靜力分析方法,只需輸入機(jī)構(gòu)結(jié)構(gòu)信息和載荷信息即可求解出鍛造操作機(jī)主運(yùn)動(dòng)機(jī)構(gòu)所有連桿受力,分析了三種鍛造操作機(jī)主運(yùn)動(dòng)機(jī)構(gòu)受力,選出實(shí)際應(yīng)用中優(yōu)先考慮的機(jī)構(gòu);基于MATLAB編寫出三種鍛造操作機(jī)主運(yùn)動(dòng)機(jī)構(gòu)自動(dòng)靜力分析軟件,實(shí)現(xiàn)該三種操作機(jī)提升、俯仰、緩沖三個(gè)主運(yùn)動(dòng)各位置不同負(fù)載下的各鉸點(diǎn)靜力分析,自動(dòng)繪制結(jié)構(gòu)軸力、剪力和彎矩圖;然后基于復(fù)合建模方法和最小模塊的思想,提出一種鍛造操作機(jī)主運(yùn)動(dòng)機(jī)構(gòu)仿真模型構(gòu)建的方法,并對一種新型三自由度鍛造操作機(jī)主運(yùn)動(dòng)機(jī)構(gòu)進(jìn)行了運(yùn)動(dòng)學(xué)動(dòng)態(tài)仿真,分析了給定驅(qū)動(dòng)缸輸入時(shí)夾鉗末端的輸出運(yùn)動(dòng);最后在梯形速度曲線和正弦速度曲線兩種不同運(yùn)動(dòng)規(guī)劃下,運(yùn)用拉格朗日法對一種新型鍛造操作機(jī)主運(yùn)動(dòng)機(jī)構(gòu)的驅(qū)動(dòng)力進(jìn)行求解,通過仿真得到兩種規(guī)劃下的驅(qū)動(dòng)力曲線,并分析了兩種規(guī)劃的優(yōu)劣。
[Abstract]:Large-scale casting forgings are the important foundation and key bottleneck of China's heavy equipment manufacturing industry, and forging operators are one of the basic equipment for accurate manufacturing forgings, which are used for clamping forgings with forging press to complete forging process. It is an important equipment for forging mechanization and automation. In recent years, forging workshops at home and abroad are widely used to realize mechanized operation by the linkage of forging operators and free forging hydraulic presses, which forms an automatic free forging system for large forgings, thus significantly improving product quality and increasing labor productivity. In this paper, the mechanical analysis and kinematics dynamic simulation design of the main motion mechanism of the operating machine are carried out. At first, a computer automatic static analysis method for operating the main motion mechanism of the forging machine is proposed. The force of all the connecting rods of the main motion mechanism of the forging machine can be solved by simply inputting the information of the structure and load of the mechanism. This paper analyzes the force of the main motion mechanism of three kinds of forging operation machine, and selects the mechanism that should be considered first in the practical application, and based on MATLAB, compiles three kinds of automatic static analysis software of the main motion mechanism of the forging operation machine to realize the lifting and pitching of the three kinds of manipulators. Static analysis of hinge points with three main motion positions and different loads, drawing the axial force, shear force and bending moment diagram of the structure automatically, and then based on the idea of compound modeling method and minimum module, This paper presents a method to construct the simulation model of the main motion mechanism of the forging operation machine. The kinematics dynamic simulation of the main motion mechanism of a new three-degree-of-freedom forging machine is carried out, and the output motion of the clamp end when the input of the driving cylinder is given is analyzed. Finally, the driving force of a new forging operating mechanism is solved by using Lagrangian method under two different kinematic planning of trapezoidal velocity curve and sinusoidal velocity curve, and the driving force curves under two kinds of planning are obtained by simulation. The advantages and disadvantages of the two programs are analyzed.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TG315

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本文編號：1822037