【正文】 作工人的關(guān)系非常的密切，要求夾具與生產(chǎn)條件和操作密切結(jié)合。 1． 所保證加工精度 用夾具裝夾工件時(shí)工件相對(duì)刀具及機(jī)床的位置由夾具保證不受工人技術(shù)的影響，使一批工件的加工精度趨于一致。 定位元件是夾具的主要功能元件之一 ，通常當(dāng)工件定位基準(zhǔn)面的形狀確定后，定位元件的結(jié)構(gòu)也就確定了。隨著我國(guó)制造業(yè)發(fā)展和各種各種零件的需求與日俱增，加工設(shè)備和工藝也向著柔性化的方向轉(zhuǎn)變。 夾具設(shè)計(jì) 研究概述 夾具 的定義 夾具是一種裝夾工件的一種工藝裝備，它廣泛地應(yīng)用于機(jī)械制造過(guò)程的切削加工，熱處理裝配，焊接和檢測(cè)等工藝過(guò)程中。 positioning and clamping。 dedicated fixture design CA6140 車床撥叉 831006 加工工藝規(guī)程及夾具設(shè)計(jì) III 目 錄 摘 要 .................................................................................................... I Abstract ................................................................................................ II 第 1 章 緒論 ....................................................................................... 1 夾具設(shè)計(jì)的意義 .................................................................... 1 夾具設(shè)計(jì)研究概述 ................................................................ 2 夾具的定義 .................................................................. 2 夾具發(fā)展概況 .............................................................. 2 夾具設(shè)計(jì)要解決的主要問(wèn)題 ....................................... 3 夾具的功能 ............................................................................ 4 夾具組成 ............................................................................... 4 夾具的基本組成部分 .................................................. 4 夾具的其他組成部分 .................................................. 5 夾具的分類 ............................................................................ 5 按夾具的通用特性分類 .............................................. 5 按夾具使用的機(jī)床分類 .............................................. 5 夾具使用優(yōu)點(diǎn) ........................................................................ 7 夾具設(shè) 計(jì)要求 ........................................................................ 7 夾具設(shè)計(jì)基本要求 ...................................................... 7 生產(chǎn)對(duì)其提出的新要求 .............................................. 8 夾具設(shè)計(jì)特點(diǎn) ........................................................................ 8 現(xiàn)代夾具的發(fā)展發(fā)向 ............................................................ 9 第 2 章 工藝規(guī)程的編制 .................................................................. 10 零件的分析 .......................................................................... 10 零件的作用 ................................................................ 10 零件的工藝分析 .........................................................11 確定毛坯的制造形式 .......................................................... 12 基面的選擇 .......................................................................... 13 CA6140 車床撥叉 831006 加工工藝規(guī)程及夾具設(shè)計(jì) IV 制定工藝路 .......................................................................... 14 選擇加工設(shè)備及刀具、夾具、量具 ................................... 15 機(jī)械加工余量、工序尺寸及毛坯尺寸的確定 .................... 16 確立切削用量及基本工時(shí) .................................................. 19 第 3 章 夾具設(shè)計(jì) .............................................................................. 37 工序 30 的夾具設(shè)計(jì) ............................................................ 37 問(wèn)題的提出 ................................................................ 37 夾具設(shè)計(jì) ................................................................... 37 定位誤差的分析 ........................................................ 40 夾具設(shè)計(jì)及操作的簡(jiǎn)要說(shuō)明 ..................................... 40 工序 50 的夾具設(shè)計(jì) ............................................................ 40 問(wèn)題的提出 ................................................................ 40 夾具設(shè)計(jì) ................................................................... 41 定位誤差的分析 ........................................................ 43 夾具設(shè)計(jì)及操作的簡(jiǎn)要說(shuō)明 ..................................... 43 工序 70 的夾具設(shè)計(jì) ............................................................ 44 問(wèn)題的提出 ................................................................ 44 夾具設(shè)計(jì) ................................................................... 44 定位誤差的分析 ........................................................ 47 夾具設(shè)計(jì)及操作的簡(jiǎn)要說(shuō)明 ..................................... 47 第 4 章 機(jī)床夾具優(yōu)化設(shè)計(jì)及經(jīng)濟(jì)效益 ........................................... 48 優(yōu)化設(shè)計(jì)分析 ........................................................................ 48 成組夾具成本 ............................................................... 48 優(yōu)化設(shè)計(jì)的現(xiàn)實(shí)意義 .................................................. 49 機(jī)床夾具柔性化 .................................................................... 49 機(jī)床夾具經(jīng)濟(jì)效益分析 ........................................................ 50 結(jié) 論 ................................................................................................. 52 致 謝 ................................................................................................. 53 參考文獻(xiàn) ............................................................................................. 54 CA6140 車床撥叉 831006 加工工藝規(guī)程及夾具設(shè)計(jì) V Contents Abstract ............................................................................................... Ⅰ Chapte r 1 Introduction ..................................................................... 1 The signifi cance of the fixture design .................................. 1 Fixture design research overview ......................................... 2 The definition of a fixture ........................................... 2 Fixture development .................................................... 2 Design of jigs and fixtures to solve the main proble ms ............................................................... 3 Functions of fixtures ............................................................. 3 Fixture position .............................................................. 4 The basic ponents of fixtures ................................ 4 The other ponent of the fixture s ............................ 4 Fixture of classificat