后鋼板吊耳加工工藝及夾具設(shè)計

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摘  要
本次設(shè)計是對后鋼板彈簧吊耳零件的加工工藝規(guī)程及一些工序的專用夾具設(shè)計。后鋼板彈簧吊零件的主要加工表面是平面及孔。由加工工藝原則可知，保證平面的加工精度要比保證孔的加工精度容易。所以本設(shè)計遵循先面后孔的原則。并將孔與平面的加工明確劃分成粗加工和精加工階段以保證加工精度?；鶞蔬x擇以后鋼板彈簧吊耳大外圓端面作為粗基準，以后鋼板彈簧吊耳大外圓端面與兩個工藝孔作為精基準。主要加工工序安排是先以后鋼板彈簧吊耳大外圓端面互為基準加工出端面，再以端面定位加工出工藝孔。在后續(xù)工序中除個別工序外均用端面和工藝孔定位加工其他孔與平面。整個加工過程均選用組合機床。

關(guān)鍵詞  后鋼板彈簧吊耳，加工工藝，專用夾具

 
ABSTRACT
The design of the plate after spring lug parts of the processing order of the processes and some special fixture design. Spring plate after hanging parts of the main plane of the surface and pore. By the principle known Processing , the plane guarantee precision machining holes than guarantee the machining precision easy. So the design follows the surface after the first hole principle. Plane with holes and the processing clearly divided into roughing and finishing stages of processing to ensure accuracy. After selecting base plate spring lug large cylindrical face as a rough benchmark, After the leaf spring lug large cylindrical end with two holes as a precision technology benchmarks. main processes arrangements after the first spring plate lug large cylindrical face each other benchmarks machined face, End position to further processing out of holes. In addition to the follow-up processes are individual processes with end-positioning technology and other processing Kong and plane. The entire process of processing machine combinations were selected.

Key words  The empress steel plate spring coil mourns the ear,Process the craft,Appropriation tongs

目  錄

摘  要 Ⅰ
ABSTRACT II
目錄 1
1緒  論 1
2  后鋼板彈簧吊耳加工工藝規(guī)程設(shè)計 3
2.1零件的分析 3
2.1.1零件的作用 3
1.1.2零件的工藝分析 3
2.2工藝過程設(shè)計所應(yīng)采取的相應(yīng)措施 4
2.3后鋼板彈簧吊耳加工定位基準的選擇 4
2.3.1 確定毛坯的制造形式 4
2.3.2粗基準的選擇 4
2.3.3精基準的選擇 5
2.4 工藝路線的制定 5
2.4.1 工藝方案一 5
2.4.2 工藝方案二 5
2.4.3 工藝方案的比較與分析 6
2.5機械加工余量、工序尺寸及毛坯尺寸的確定 6
2.6確定切削用量及基本工時（機動時間） 7
2.7時間定額計算及生產(chǎn)安排 16
2.8 本章小結(jié) 18
3  粗銑后鋼板彈簧吊耳內(nèi)側(cè)端面夾具設(shè)計 19
3.1粗銑后鋼板彈簧吊耳內(nèi)側(cè)端面夾具設(shè)計 19
3.2定位方案的分析和定位基準的選擇 19
3.3定位誤差分析 19
3.4銑削力與夾緊力計算 20
3.5定向鍵與對刀裝置設(shè)計 21
3.6夾緊裝置及夾具體設(shè)計 23
3.7夾具設(shè)計及操作的簡要說明 24
3.8本章小結(jié) 24
4  加工 工藝孔夾具設(shè)計 25
4.1加工 工藝孔夾具設(shè)計 25
4.2定位方案的分析和定位基準的選擇 25
4.4切削力的計算與夾緊力分析 26
4.5鉆套、襯套、鉆模板及夾具體設(shè)計 26
4.6夾具精度分析 28
4.7夾具設(shè)計及操作的簡要說明 28
4.8本章小結(jié) 29
5  加工 工藝孔夾具設(shè)計 30
5.1加工 工藝孔夾具設(shè)計 30
5.2定位方案的分析和定位基準的選擇 30
5.3定位元件的設(shè)計 30
5.4定位誤差分析 32
5.5切削力的計算與夾緊力分析 32
5.6鉆套、襯套、鉆模板及夾具體設(shè)計 32
5.7夾具精度分析 34
5.8夾具設(shè)計及操作的簡要說明 34
5.9本章小結(jié) 35
結(jié)   論 36
參 考 文 獻 37
致  謝 38