【摘要】：楔橫軋單件軋制非對(duì)稱軸類(lèi)零件時(shí),由于軸類(lèi)零件左、右斷面收縮率或展寬長(zhǎng)度的不一致,模具左、右變形區(qū)工藝參數(shù)選取不能完全一樣,如果根據(jù)經(jīng)驗(yàn)選取模具參數(shù),軋制時(shí)左右變形區(qū)所產(chǎn)生的軸向力難以平衡,導(dǎo)致軸類(lèi)零件在軋制過(guò)程中出現(xiàn)軋件軸向竄動(dòng)、臺(tái)階缺肉等缺陷,影響產(chǎn)品的外形尺寸和機(jī)械性能。應(yīng)用成形楔以外的一組或數(shù)組楔來(lái)保證軋件的軸向平衡,不僅可以保證產(chǎn)品的外形尺寸和產(chǎn)品質(zhì)量,還可以擴(kuò)展工藝參數(shù)的選擇范圍,降低模具的生產(chǎn)成本。因此,本文以平楔結(jié)構(gòu)下非對(duì)稱軸類(lèi)件楔橫軋成形中各個(gè)因素對(duì)非對(duì)稱軸成形質(zhì)量的影響作為研究的主要內(nèi)容,并設(shè)計(jì)開(kāi)發(fā)出一款軟件以實(shí)現(xiàn)自動(dòng)化建模,再結(jié)合正交試驗(yàn)與數(shù)值模擬的方法對(duì)模具結(jié)構(gòu)進(jìn)行最終的驗(yàn)證。論文選題具有較為重要的學(xué)術(shù)意義和工程實(shí)際應(yīng)用價(jià)值。本文的主要工作成果如下:(1)以現(xiàn)階段楔橫軋模具設(shè)計(jì)的有關(guān)規(guī)范為依據(jù)對(duì)非對(duì)稱件楔橫軋模具進(jìn)行設(shè)計(jì),找出楔橫軋模具各結(jié)構(gòu)參數(shù)之間的數(shù)學(xué)關(guān)系。(2)運(yùn)用SolidWorks二次開(kāi)發(fā)技術(shù)和VB編程技術(shù),實(shí)現(xiàn)了非對(duì)稱楔橫軋模具的參數(shù)化建模,大大縮小了模具的設(shè)計(jì)周期,提高了優(yōu)化效率。(3)通過(guò)運(yùn)用DEFORM-3D有限元分析軟件對(duì)軋件的中心橫截面上的點(diǎn)進(jìn)行點(diǎn)追蹤,得到平楔結(jié)構(gòu)參數(shù)對(duì)軸向竄動(dòng)的影響規(guī)律。(4)以成形的非對(duì)稱軸的輪廓形狀為主要指標(biāo),兼顧軋制力能和模具長(zhǎng)度進(jìn)行多結(jié)構(gòu)參數(shù)的正交數(shù)值模擬,得到了模具各個(gè)主楔的成形角和展寬角的最優(yōu)組合。(5)通過(guò)運(yùn)用DEFORM-3D有限元分析軟件模擬了非對(duì)稱楔橫軋的成型過(guò)程,分析軋制過(guò)程中軸向橫截面工件損傷、等效應(yīng)變和溫度場(chǎng)的變化規(guī)律;分析了精整階段軋件整體速度場(chǎng)及各軋制階段軋件的中心橫截面速度場(chǎng);分析了軋制過(guò)程中模具在三個(gè)方向軋制力變化規(guī)律、模具磨損以及模具不同位置的溫度變化規(guī)律。本文所做的研究對(duì)于創(chuàng)新楔橫軋工藝技術(shù)、完善和充實(shí)非對(duì)稱楔橫軋軋制理論、降低生產(chǎn)成本以及提高軋制產(chǎn)品質(zhì)量具有重要的理論與實(shí)用價(jià)值。
[Abstract]:In cross wedge rolling of asymmetrical shaft parts, the process parameters of the left and right deformation zone of the die can not be exactly chosen because of the inconsistency of the shrinkage rate or the broadening length of the shaft parts, if the die parameters are selected according to the experience, It is difficult to balance the axial force produced by the left and right deformation zone during rolling, which leads to the axial movement of the rolling parts and the lack of meat on the steps, which affects the shape, size and mechanical properties of the products. The application of a group or array wedge outside the forming wedge to ensure the axial balance of the rolling piece can not only guarantee the product shape size and product quality, but also extend the selection range of the process parameters and reduce the production cost of the die. Therefore, in this paper, the influence of various factors on the forming quality of non-symmetric axis in the cross wedge rolling of asymmetric shaft under flat wedge structure is taken as the main research content, and a software is designed and developed to realize the automatic modeling. Finally, the die structure is verified by orthogonal test and numerical simulation. This paper has important academic significance and practical application value. The main achievements of this paper are as follows: (1) based on the relevant specifications of cross wedge rolling die design at present, the design of cross wedge rolling die for asymmetric parts is carried out. Find out the mathematical relationship among the structural parameters of cross wedge rolling die. (2) by using SolidWorks secondary development technology and VB programming technology, the parametric modeling of asymmetric cross wedge rolling die is realized, and the design cycle of die is greatly reduced. The optimization efficiency is improved. (3) the point tracing on the center cross section of the workpiece is carried out by using DEFORM-3D finite element analysis software. The influence of flat wedge structure parameters on axial movement is obtained. (4) taking the profile of the formed non-symmetric axis as the main index, the orthogonal numerical simulation of multiple structural parameters is carried out, taking the rolling force energy and the die length into account. The optimum combination of forming angle and broadening angle of each main wedge of die is obtained. (5) the forming process of asymmetric cross wedge rolling is simulated by using DEFORM-3D finite element analysis software, and the damage of axial cross section workpiece in rolling process is analyzed. The variation of equivalent strain and temperature field; The whole velocity field of the workpiece in finishing stage and the velocity field of the center cross section in each rolling stage are analyzed, and the variation law of the rolling force in three directions, the wear of the die and the temperature change of the die at different positions during rolling are analyzed. The research in this paper has important theoretical and practical value for innovating the technology of cross wedge rolling, perfecting and enriching the theory of asymmetric cross wedge rolling, reducing the production cost and improving the quality of rolled products.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TG333

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 彭文飛;張康生;賈震;胡正寰;;楔橫軋非對(duì)稱軸類(lèi)件有限元模型分析[J];塑性工程學(xué)報(bào);2010年02期

2 胡正寰;張巍;;楔橫軋?jiān)谄?chē)等軸類(lèi)零件上的應(yīng)用與發(fā)展[J];金屬加工(熱加工);2010年05期

3 劉肖震;陳拂曉;郭俊卿;;軸承保持架超塑成形中的損傷模擬[J];熱加工工藝;2007年09期

4 嚴(yán)竹生;;SolidWorks二次開(kāi)發(fā)關(guān)鍵技術(shù)研究[J];中國(guó)科技信息;2006年21期

5 馬剛,王寶雨,胡正寰;一種楔橫軋模具CAD/CAM特征建模系統(tǒng)的研究[J];鍛壓技術(shù);2005年04期

6 沈海榮,楊勇生,張軍;基于VB技術(shù)的SolidWorks二次開(kāi)發(fā)方法[J];計(jì)算機(jī)輔助工程;2004年04期

7 楊宏青,王寶雨,黃敬義,胡正寰;楔橫軋模具CAD/CAPP/CAM集成系統(tǒng)的研究[J];制造技術(shù)與機(jī)床;2004年05期

8 袁文生;油泵油嘴針閥體楔橫軋工藝試驗(yàn)研究[J];鍛壓裝備與制造技術(shù);2003年05期

9 杜鵑;CAD/CAM/CAE技術(shù)在模具生產(chǎn)中的應(yīng)用[J];機(jī)械設(shè)計(jì)與制造;2003年01期

10 韓德偉;楔橫軋軸向力對(duì)軋件質(zhì)量的影響[J];機(jī)械工藝師;2001年04期

相關(guān)碩士學(xué)位論文 前5條

1 李寶聚;熱鍛模具磨損有限元分析與優(yōu)化[D];山東大學(xué);2015年

2 王兆嘉;汽車(chē)后橋主動(dòng)齒輪坯楔橫軋模具參數(shù)化設(shè)計(jì)及有限元分析[D];吉林大學(xué);2012年

3 蔣鈺鋼;高速切削加工過(guò)程有限元仿真研究[D];山東大學(xué);2011年

4 王偉;非調(diào)質(zhì)鋼空心件三輥楔橫軋成形過(guò)程有限元研究[D];燕山大學(xué);2009年

5 沈智;大直徑楔橫軋件的成形工藝研究[D];機(jī)械科學(xué)研究總院;2006年

，

本文編號(hào)：2319695