柴油機(jī)連桿的加工工藝及其夾具設(shè)計

摘 要

本文主要論述了柴油機(jī)連桿的加工工藝及其夾具設(shè)計。因?yàn)檫B桿是活塞式發(fā)動機(jī)和壓縮機(jī)的主要零件之一，其大頭孔與曲軸連接，小頭孔通過活塞銷與活塞連接，其作用是將活塞的氣體壓力傳送給曲軸，又收曲軸驅(qū)動而帶動活塞壓縮汽缸中的氣體。連桿承受的是沖擊動載荷，因此要求連桿質(zhì)量小，強(qiáng)度高。所以在安排工藝過程時，按照“先基準(zhǔn)后一般”的加工原則。連桿的主要加工表面為大小頭孔和兩端面，較重要的加工表面為連桿體和蓋的結(jié)合面及螺栓孔定位面。 在夾具設(shè)計方面也要針對連桿結(jié)構(gòu)特點(diǎn)比較小，設(shè)計應(yīng)時應(yīng)注意夾具體結(jié)構(gòu)尺寸的大小等，最終就能達(dá)到零件的理想要求！
關(guān)鍵詞: 連桿 變形 加工工藝 夾具設(shè)



Abstract

The diesel connecting rod treating handicraft the main body of a book has been discussed mainly and their grip design. Because of the connecting rod is one of dyadic engine of piston and main compression engine part, whose larger end hole and crank shaft link up , the small head hole links up by the wrist pin and the piston , whose effect is that the piston gas pressure is transmitted to the crank shaft , collect crank shaft gas in driving but setting a piston in motion to compress a cylinder. Being that the pole bears pounds a live load , request connecting rod mass is minor therefore , the intensity is high. Therefore when arranging procedure for, according to "first the criterion queen-like " treating principle. The connecting rod main part processes a surface being that head hole and both ends big or small are weak, more important faying face and bolt hole locating surface being the connecting rod body and cover treating outside. Also should be comparatively small specifically for connecting rod structure characteristic in the field of grip design , design that the size should pay attention to gripping the concrete structure dimension of the season waits, the ideal being therefore likely to reach a part ultimately demands!
Keyword: Connecting rod Deformination Processing technology Design of clamping device

目 錄

摘 要 I
Abstract II
第一章 柴油機(jī)連桿的加工工藝 1
1.1 柴油機(jī)連桿的用途及其特點(diǎn) 1
1.2　連桿的的材料及毛坯制造 1
1.3　連桿的加工工藝過程 2
1.4 連桿的加工工藝過程分析 2
1.4.1定位基準(zhǔn)的分析 2
1.4.2定位基準(zhǔn)的選擇 3
1.4.3 加工階段的劃分和加工順序的安排 4
1.4.4 確定合理的夾緊方法 5
1.4.5 連桿主要面的加工方法 5
1.4.6 連桿主要孔的加工方法 5
1.4.7 連桿體與連桿蓋的銑開工序 6
1.5夾具使用 6
1.6 確定各工序的加工余量、計算工序尺寸及公差 6
1.6.1 確定加工余量 6
1.6.2確定工序尺寸及其公差 7
1.7 各項(xiàng)加工數(shù)據(jù)的計算 7
1.8 連桿的檢驗(yàn) 10
1.8.1 檢查主要表面的尺寸精度 11
1.8.2檢驗(yàn)主要表面的位置精度 11
1.8.3 連桿螺釘孔與結(jié)合面垂直度的檢驗(yàn) 11
第二章 夾具的設(shè)計 13
2.1 銑削分面夾具設(shè)計 13
2.1.1夾具的問題注意 13
2.1.2 夾具設(shè)計 13
2.2專用夾具的設(shè)計 15
2.21精銑連桿兩端面的夾具設(shè)計 15
2.2.2銑床夾具定位方案的確定 15
2.2.3銑床夾具的夾緊機(jī)構(gòu)的確定 16
2.2.4銑床夾具對刀裝置的確定 16
2.2.5 銑床夾具的結(jié)構(gòu)分析 16
致 謝 21
參考文獻(xiàn): 22