后鋼板彈簧吊耳的設(shè)計(jì)


摘   要

本次設(shè)計(jì)是對(duì)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(jì)。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(jì)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?zhǔn)選擇以后鋼板彈簧吊耳大外圓端面作為粗基準(zhǔn)，以后鋼板彈簧吊耳大外圓端面與兩個(gè)工藝孔作為精基準(zhǔn)。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(zhǔn)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(gè)別工序外均用端面和工藝孔定位加工其他孔與平面。整個(gè)加工過(guò)程均選用組合機(jī)床。

關(guān)鍵詞：后鋼板彈簧吊耳，加工工藝，專用夾具

After Hanging Ear Leaf Spring Design

Abstract
This design is to the rear spring shackle components processing technological process and some working procedure unit clamp design.The rear spring hangs the components the main processing surface is the plane and the hole.May know by the processing craft principle, the guarantee plane processing precision must be easier than the guarantee hole processing precision.After therefore this design deference first surface hole principle.And is clear about the hole and the plane processing divides the rough machining and the precision work stage guarantees the processing precision.The datum chooses later spring shackle big outer annulus end surface to take the thick datum, later the spring shackle big outer annulus end surface will take the fine datum with two craft holes.The main processing working procedure arrangement first later the spring shackle big outer annulus end surface mutually processes the end surface for the datum, then will process the craft hole by the end surface localization.Uses the end surface and the craft hole localization in the following working procedure besides the individual working procedure processes other and the plane.The entire processing process selects the aggregate machine-tool.

Keywords: leaf spring, after hanging ears, processing technology, a dedicated fixture

目         錄

緒論…………………………………………………………………………………1
  1. 零件的分析………………………………………………………………………… 2
  2. 工藝規(guī)程設(shè)計(jì)……………………………………………………………………… 3
2．1 確定毛坯的制造形式………………………………………………………3
2．2 基面的選擇…………………………………………………………………3
2．2．1 粗基準(zhǔn)的選擇………………………………………………………3
2．2．2 精基準(zhǔn)的選擇………………………………………………………3
2．3 制訂工藝路線………………………………………………………………3
2．4 機(jī)械加工余量、工序尺寸及毛坯尺寸的確定……………………………5
2．5 確定切削用量及基本工時(shí)…………………………………………………7
2．5．1.加工條件……………………………………………………………7
2．5．2.計(jì)算切削用量………………………………………………………7
  3. 夾具設(shè)計(jì)………………………………………………………………..……………13
3．1 問(wèn)題的提出………………………………………………….………………13
3．2 卡具設(shè)計(jì)……………………………………………………….……………13
3．2．1．定位基準(zhǔn)的餓選擇…………………………………………………13
3．2．2．切削力和夾緊力的計(jì)算………………………………………………13
3．2．3．定位誤差分析………………………………………………………13
3．2．4．夾具設(shè)計(jì)及操作的簡(jiǎn)要說(shuō)明………………………………………14
4. 參考文獻(xiàn) …………………………………………………………………………15