內(nèi)燃機氣門頂柱擠壓模設(shè)計

模具論文編號:JX680  論文字數(shù):10757.頁數(shù):30 附任務(wù)書,開題報告,外文翻譯,答辯PPT,CAD圖紙
目  錄
1 前言 1
2 選題背景 1
2.1 內(nèi)燃機氣門頂柱 1
2.2 擠壓模選型 3
3 冷擠壓前的準備 6
3.1 工藝分析 6
3.2 原材料的選擇 7
3.3 毛坯的形狀與尺寸 8
3.4 毛坯制備 8
3.5 冷擠壓材料的軟化處理 9
3.6 冷擠壓毛坯的表面處理與潤滑 9
4 冷擠壓力的計算及擠壓力機的選擇 11
4.1 變形程度 11
4.2 計算擠壓力 13
4.3 冷擠壓設(shè)備的選擇 16
5 冷擠壓模具 18
5.1 冷擠壓模具工作部分設(shè)計 18
5.2 導(dǎo)向裝置 23
5.3 頂件裝置 24
6 總結(jié) 24
參考文獻 25
致   謝 26

【摘要】內(nèi)燃機是使用燃料直接在機械內(nèi)部燃燒并借助工質(zhì)（燃氣）的狀態(tài)變化實現(xiàn)做功的機械。當前工程機械用的動力裝置有汽油機、柴油機、燃氣輪機和柴油機等。電動機具有功率范圍廣、噪聲小、無污染等優(yōu)點，但是，其適用范圍受到電源的限制，因此，常在很少移動或移動距離較短的挖掘機、起重機上。燃氣輪機的特點是結(jié)構(gòu)簡單、尺寸小、重量輕、運轉(zhuǎn)平穩(wěn)等，其功率比汽油機和柴油機底，因而主要用于航空動力方面。汽油機與柴油機相比，由于升功率較高，噪聲與振動較小，所以它多應(yīng)用于國民經(jīng)濟的各個領(lǐng)域，并成為工程機械的主要動力。這里所討論的是這種應(yīng)用廣泛的汽油機氣門頂柱擠壓模設(shè)計。在擠壓工藝中我所討論的是冷擠壓加工。冷擠壓加工是在模具的強大壓力下，迫使大截面的毛坯從凹模孔或從凸模與凹模之間的間隙中擠出，從而獲得小截面的擠壓件。

【關(guān)鍵詞】內(nèi)燃機；冷擠壓；凸模；凹模

Engine Valve top column extrusion die design
 [Abstract] Internal combustion engine is to use the fuel directly in the internal combustion machinery, and with working fluid (gas) is doing work to achieve the mechanical state changes. The current power plant construction machinery have gasoline engines, diesel engines, gas turbines and diesel engines. Has a wide range of motor power, noise, pollution, etc, but its scope limited by the power supply, therefore, often little move or move away from short excavator, crane. Gas turbine is characterized by simple structure, small size, light weight, smooth operation, with its power base than gasoline and diesel engines, which is mainly used for air force side. Compared to gasoline and diesel, rose as high power, low noise and vibration, so it is more used in various fields of national economy and become the main driver of construction machinery. Discussed here, this is the widely used gasoline engine valve top column extrusion die design. In the extrusion process is discussed in my cold extrusion. Extrusion is under strong pressure in the mold, forcing a large section of the blanks from the die hole or from the punch and the die gap between the extrusion, which was a small section of the extrusion.

[Key words]  Internal combustion engine ；Cold extrusion； Punch；Die