CA6140車床后拖架零件加工工藝及銑底面專用夾具設(shè)計(jì)
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摘 要

在生產(chǎn)過程中，使生產(chǎn)對象（原材料，毛坯，零件或總成等）的質(zhì)和量的狀態(tài)發(fā)生直接變化的過程叫工藝過程，如毛坯制造，機(jī)械加工，熱處理，裝配等都稱之為工藝過程。在制定工藝過程中，要確定各工序的安裝工位和該工序需要的工步，加工該工序的機(jī)車及機(jī)床的進(jìn)給量，切削深度，主軸轉(zhuǎn)速和切削速度，該工序的夾具，刀具及量具，還有走刀次數(shù)和走刀長度，最后計(jì)算該工序的基本時(shí)間，輔助時(shí)間和工作地服務(wù)時(shí)間。
本文對CA6140車床后托架進(jìn)行了結(jié)構(gòu)和工藝分析，確定了機(jī)械加工工藝路線，制訂出了零件的制造工藝方案和機(jī)械加工工藝規(guī)程，并為加工零件上底平面設(shè)計(jì)了一套專用銑床夾具。

關(guān)鍵詞 工序，工藝，工步，加工余量，定位方案，夾緊力


ABSTRACT
Enable producing the target in process of production (raw materials, the blank , state of quality and quantity on part become always ) take place direct course of change ask craft course, if the blank is made, machining, heat treatment , assemble etc. and call it the craft course. In the course of making the craft , is it confirm every erector location and worker step that process need this of process to want, the locomotive of processing , this process , and the entering the giving amount of the lathe, cut depth , the rotational speed of the main shaft and speed of cutting, the jig of this process, the cutter and measuring tool, a one hundred sheets of number of times still leaves and a one hundred sheets of length leaves, calculate basic time of this process , auxiliary time and service time of place of working finally.
CA6140 lathe to stand here after a technical analysis of the structure and to determine the mechanical machining line, develop a parts manufacturing processes of the programme and mechanical machining and components for the processing of facing design of a milling machine jig.


Keywords： The process, worker one, worker's step , the surplus of processing, orient the scheme , clamp strength



目 錄
中文摘要...........................................................................Ⅰ
英文摘要...........................................................................Ⅱ
第 1 章 CA6140機(jī)床后托架加工工藝............................................. 1
1.1 CA6140機(jī)床后托架的作用及簡要分析.............................................1
1.2 CA6140機(jī)床后托架的工藝要求及工藝分析.........................................1
1.2.1 CA6140機(jī)床后托架的技術(shù)要求..............................................2
1.2.2 確定毛坯的制造形式.......................................................2
1.3 加工工藝過程..................................................................2
1.4 確定各表面加工方案............................................................3
1.4.1 在選擇各表面及孔的加工方法時(shí)，要綜合考慮以下因素..........................3
1.4.2平面的加工................................................................3
1.4.3孔的加工方案..............................................................4
1.5　確定定位基準(zhǔn).................................................................4
1.5.1 粗基準(zhǔn)的選擇............................................．................4
1.5.2 精基準(zhǔn)選擇的原則.........................................................5
1.6工藝路線的擬訂... .............................................................6
1.6.1 工序的合理組合...........................................................6
1.6.2 工序的集中與分散.........................................................6
1.6.3 加工階段的劃分.......................................．...................7
1.6.4 加工工藝路線方案的比較...............................．...................8
1.7 CA6140機(jī)床后托架的偏差，加工余量，工序尺寸及毛坯尺寸的確定.................... 10
1.7.1 毛坯的結(jié)構(gòu)工藝要求...........................................．..........10
1.7.2 CA6140機(jī)床后托架的偏差計(jì)算..............................................11
1.8確定切削用量及基本工時(shí)（機(jī)動(dòng)時(shí)間）.............................................14
1.8.1 工序1：粗、精銑底面.....................................................14
1.8.2 工序2 粗、半精、精鏜CA6140側(cè)面三杠孔....................................16
1.8.3 工序3：鉆頂面四孔.......................................................22
1.8.4 工序4：鉆側(cè)面兩孔.......................................................26
1.9 時(shí)間定額計(jì)算及生產(chǎn)安排.......................................................28
1.9.1 粗、精銑底面............................................................28
1.9.2 鏜側(cè)面三杠孔............................................................29
1.9.3 鉆頂面四孔..............................................................30
第二章 專用夾具設(shè)計(jì)..............................................................32
2.1 銑平面夾具設(shè)計(jì)...............................................................32
2.1.1 研究原始質(zhì)料............................................................32
2.1.2 定位基準(zhǔn)的選擇..........................................................32
2.1.3 切削力及夾緊分析計(jì)算....................................................32
2.1.4 誤差分析與計(jì)算..........................................................34
2.1.5 夾具設(shè)計(jì)及操作的簡要說明................................................34
結(jié)論............................................................................... 36
參考文獻(xiàn)...........................................................................37
致謝............................................................................... 38
附錄



參考文獻(xiàn)
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