壓縮機(jī)箱體加工工藝及夾具設(shè)計(jì)

機(jī)械論文編號(hào):JX212 所有圖紙,任務(wù)書(shū),論文字?jǐn)?shù):14474.頁(yè)數(shù):37

目   錄
中文摘要 ........................................................Ⅰ
英文摘要 ........................................................Ⅱ
前言 ............................................................1
第1章  零件的分析 ...............................................1
  1.1  零件的作用 ...............................................1
  1.2  零件的工藝分析........................................... 1
第2章  工藝規(guī)程的設(shè)計(jì) ...........................................2
2.1  確定毛坯的制造形式......................................... 2
2.2  基準(zhǔn)的選擇................................................. 2
2.2.1 粗基準(zhǔn)的選擇.............................................. 2
2.2.1 精基準(zhǔn)的選擇.............................................. 2
2.3  制定工藝路線 ...............................................3
2.3.1 機(jī)械加工余量、工序尺寸及毛坯的確定........................ 3
2.3.2 確定切削用量及基本工時(shí).................................... 5
第3章  專用夾具的設(shè)計(jì)........................................... 16
3.1  問(wèn)題的指出................................................. 16
3.2  夾具的設(shè)計(jì) .................................................17
3.2.1 定位基準(zhǔn)的選擇 ............................................17
3.2.2切削力及夾緊力的計(jì)算....................................... 17
3.2.3定位誤差的分析 .............................................17
3.2.4夾具安裝及操作的簡(jiǎn)要說(shuō)明 ...................................21
第4章  結(jié)論 .....................................................22
參考文獻(xiàn)........................................................ 23
致謝.............................................................24

摘   要

     零件的加工工藝編制，在機(jī)械加工中占有非常重要的地位，零件工藝編制得合不合理，這直接關(guān)系到零件最終能否達(dá)到質(zhì)量要求；夾具的設(shè)計(jì)也是不可缺少的一部分，它關(guān)系到能否提高其加工效率的問(wèn)題。因此這兩者在機(jī)械加工行業(yè)中是至關(guān)重要的環(huán)節(jié)。
本次設(shè)計(jì)的是壓縮機(jī)箱體加工工藝以及夾具的設(shè)計(jì)，壓縮機(jī)主要作用是把低壓冷媒汽體吸進(jìn)壓縮成高壓汽體----冷卻循環(huán)，使部分動(dòng)能轉(zhuǎn)化為壓力能從而提高汽體的壓力。壓縮機(jī)箱體則是承載這個(gè)壓力和連接各零部件，因此要求箱體能夠承受壓力，以及箱體與其他零部件的密封性，在編制加工工藝時(shí)，要考慮到各個(gè)接觸面的各項(xiàng)精度以及形狀與位置公差等。
在設(shè)計(jì)加工箱體斜面上的螺紋孔專用夾具時(shí)，由于孔是自由公差，所以為了縮短加工時(shí)間，采用兩個(gè)斜面擋塊來(lái)使箱體工件定位，再使用兩鉸鏈支座，使得裝夾工件就方便了，斜面擋塊的與水平位置傾斜14°，保證了被加工斜面在水平位置，使用鉆模以及鉆模套來(lái)準(zhǔn)確的定孔的加工位置，有鉆模套加工孔無(wú)需畫線定位，直接就可以加工，提高了加工效率。

關(guān)鍵詞：工藝、基準(zhǔn)、切削用量、定位基準(zhǔn)、定位誤差。

ABSTRACT

The part treating handicraft establishment, occupies very important position in machine work , part handicraft weaves such that this is related to ultimate being able to reach a quality requirement or not of part whether rationally or not, directly; The clamp design is also an essential part , the problem whether can improve whose treating efficiency it is related to. This both are all-important links therefore in machine work industry.
Designing that originally time is that the compression engine box experiences and observes the design processing handicraft and the clamp , the main effect of compression engine is that the cryogen vapor body inhales the high-handed vapor compressing Cheng in experiences and observes- - - - the circulation cooling down , makes part kinetic energy change the pressure being that pressure can improve the vapor body thereby with low pressure. Then, the compression engine box body is to bear the weight of this pressure and links every component and part, Require that the box body is able to bear pressure therefore, and box body comparing with other component and part hermetic sealing, before work out when processing handicraft , ask accuracy and form and location common difference etc. to consider various arriving at each contact surfaces.
During the period of the clamp designing the special use processing the upper box body inclined plane screwed hole, adopt two inclined planes to make box body workpiece fix position coming the stop dog , use two hinge abutments again , can be used pretending to grip workpiece having gone to the lavatory since the hole is that the free common difference , reason why process time for curtailing,the inclined plane blocks a piece and horizontal position tilts 14', Have ensured that the inclined plane being processed is in horizontal position , have used drill model to process location as well as drill model cover comes to accurate fixing, have drill model the allocation processing a hole set drawing a line unnecessarily, is direct not bad the efficiency having processed , improving treating.

Keywords: Handicraft , criterion, cut dosages , the criterion fixing position , the error fixing position. .