連桿零件的鍛模設(shè)計(jì)與鍛造工藝流程

機(jī)械設(shè)計(jì)制造及其自動(dòng)化論文，論文編號(hào):JX1094  論文字?jǐn)?shù):23307.頁(yè)數(shù):43

摘     要
 近些年來(lái)，鍛造連桿產(chǎn)品設(shè)計(jì)得到了空前的發(fā)展。主要是機(jī)械其他領(lǐng)域的快速發(fā)展帶動(dòng)了它的革新。這使得生產(chǎn)高品質(zhì)連桿的商業(yè)運(yùn)作成為可能，應(yīng)用到要求高品質(zhì)連桿的地方，如汽車內(nèi)燃機(jī)連桿，這種鍛造連桿可以不需要進(jìn)一步加工。因?yàn)橥ㄟ^(guò)鍛造技術(shù)的汽車內(nèi)燃機(jī)連桿具備足夠高的精度。考慮到汽車內(nèi)燃機(jī)連桿精度要求較高，采用模鍛加工工藝。鍛造技術(shù)是先進(jìn)制造技術(shù)的重要組成部分，也是汽車工業(yè)、工程機(jī)械行業(yè)中應(yīng)用廣泛的制造工藝方法。本文介紹了對(duì)連桿鍛造工藝的研究，其中特別是針對(duì)應(yīng)用于汽車內(nèi)燃機(jī)的高品質(zhì)連桿產(chǎn)品。本文所設(shè)計(jì)的模具具有結(jié)構(gòu)簡(jiǎn)單和成本低廉等優(yōu)點(diǎn)。本文充分利用現(xiàn)代三維CAD設(shè)計(jì)軟件，充分展現(xiàn)了3D軟件在模具設(shè)計(jì)中的良好應(yīng)用能力。
 
關(guān)鍵詞：連桿  鍛造  工藝流程  鍛模

 Abstract
 In recent years vigorous developments have been undertaken to enable the production of connecting rod and rod forms by forming methods. The driving force behind this activity has been, in common with other areas of component manufacture, greater added value. These developments are leading to the commercial feasibility of producing connecting rod forms of high quality, ready for use for applications where extreme high quality of connecting rod form is not necessary, such as automotive, forged connecting rod forms can be employed without further machining. Because the dimensional quality required of the connecting rod in automotive is high as yet only machined forms are sufficiently accurate. Taking into account the internal combustion engine car link higher precision, the use of forging processes. Precision Forging technology and advanced manufacturing technology is an important part and also the automotive industry, construction machinery industry in the manufacturing process widely used method.
 It describes the background to the research on the forging of connecting rod forms with particular attention on the production of high quality connecting rod for automotive rod. The forging die is simple in structure, such as reliable and low cost advantages, particularly applicable to the shape of the products. Such advantage of modern as CAD design software, and fully demonstrates the 3D in the mold of good design capabilities.
 
Keywords：Connecting rod  Forging  Process  Forging die

目  錄
中文摘要 Ⅰ
英文摘要 Ⅱ
目錄 Ⅲ
第一章     緒論 1
 1.1  引言 1
 1.2  選題動(dòng)機(jī)與研究背景 1
 1.3  研究方法與系統(tǒng)描述 3
 1.4  論文內(nèi)容概述 3
第二章  連桿分析及其鍛造工藝方案確定 4
 2.1  引言 4
 2.2  確定鍛件尺寸 4
 2.3  分模面位置的選擇 5
 2.4  加工余量和公差確定 5
 2.5  鍛模斜度的選擇 7
 2.6  圓角半徑的確定 8
 2.7  沖孔連皮的設(shè)計(jì) 8
 2.8  連桿鍛造的技術(shù)條件 9
 2.9  本章小結(jié) 11
第三章  鍛造工藝參數(shù)的確定 12
 3.1  引言 12
 3.2  坯料基本要求 12
 3.2.1  坯料加熱規(guī)范 12
 3.2.2  坯料尺寸要求 12
 3.3  鍛件制坯工步選擇 13
     3.3.1  繪制計(jì)算毛坯圖 13
     3.3.2  制坯工步 16
 3.4  坯料尺寸的確定 16
 3.5  確定飛邊槽的型式和尺寸 17
 3.5.1  飛邊槽對(duì)開式模鍛金屬成形的影響 17
 3.5.2  飛邊槽的結(jié)構(gòu)形式 18
 3.5.3  飛邊槽尺寸的確定 18
 3.6  鉗口的設(shè)計(jì) 19
 3.7  鍛錘噸位的設(shè)計(jì) 19
      3.7.1  模鍛錘及其工藝過(guò)程特征 19
 3.7.2  鍛錘噸位選擇 20
 3.7.3  鍛錘注意事項(xiàng) 20
 3.8  模鍛工藝過(guò)程總體設(shè)計(jì)要點(diǎn) 21
      3.8.1  備料工序 21
 3.8.2  模鍛成形工序 21
 3.8.3  加熱與冷卻工序 21
      3.8.4  模鍛件熱處理工序 22
 3.8.5  模鍛件的表面清理與加工工序 22
 3.9  本章小結(jié) 23
第四章   模膛及鍛模結(jié)構(gòu)設(shè)計(jì) 24
 4.1  引言 24
 4.2  終鍛模膛設(shè)計(jì) 24
 4.3  預(yù)鍛模膛設(shè)計(jì) 25
 4.3.1  預(yù)鍛模膛的設(shè)計(jì)要點(diǎn) 25
 4.3.2  連桿預(yù)鍛模膛的設(shè)計(jì) 26
 4.4  制坯模膛設(shè)計(jì) 27
 4.4.1  拔長(zhǎng)模膛設(shè)計(jì) 27
 4.4.2  滾壓模膛設(shè)計(jì) 28
 4.5  鍛模結(jié)構(gòu)設(shè)計(jì) 29
 4.5.1  模膛的布排 29
 4.5.2  錯(cuò)移力的平衡 30
 4.5.3  脫料機(jī)構(gòu) 31
 4.5.4  模具強(qiáng)度設(shè)計(jì)注意事項(xiàng) 31
 4.5.5  模塊設(shè)計(jì)尺寸 31
 4.6  連桿模鍛工藝流程 32
 4.7  本章小結(jié) 32
第五章   模鍛的后續(xù)工序 33
 5.1  引言 33
 5.2  切邊與沖孔 33
 5.3  校正和精壓 34
 5.3.1  校正 34
 5.3.2  精壓 35
 5.4  表面清理 35
 5.5  本章小結(jié) 35
總結(jié) 36附錄A 37
參考文獻(xiàn) R-1
致謝 39