螺旋千斤頂設(shè)計(jì)及其主要零件加工


摘要
于螺旋千斤頂是一種小型的起重設(shè)備，體積小方便攜帶，制造成本低，所以在日常生活中被廣泛應(yīng)用。
螺旋千斤頂主要由螺桿、螺母、手柄、底座、大傘齒輪、小傘齒輪、機(jī)架、棘輪組、升降套筒等零部件組裝而成的。在本次設(shè)計(jì)過程中螺旋傳動的計(jì)算和各零部件的設(shè)計(jì)與選材最為重要：并且重點(diǎn)運(yùn)用了機(jī)械設(shè)計(jì)方面的知識，另外還運(yùn)用了輔助繪圖工具AutoCAD、Pro/E等
本文從螺旋千斤頂?shù)牧悴考脑O(shè)計(jì)與選材等多方面，闡述了它設(shè)計(jì)的全過程。尤其在工藝規(guī)程設(shè)計(jì)中，運(yùn)用了大量的科技加工理論及計(jì)算公式，對它進(jìn)行了精確的計(jì)算。特別是在螺旋傳動部分，通過對螺桿穩(wěn)定性校核、螺母紋牙的計(jì)算、自鎖性校核和各種強(qiáng)度計(jì)算。通過各種科學(xué)的計(jì)算使設(shè)計(jì)出來的螺旋千斤頂更加能夠滿足各種實(shí)際需要。
關(guān)鍵字：千斤頂 、螺旋傳動、AuctoCAD、Pro/E

                         Abstrac
   As the spiral jack is a kind of lifting equipment ,besides ,it has small size portability ,and low cost ,so it is widely used in our daily life
   Spiral jack is consist with screw , nut ,handle , base , large bevel gear , rundlet gears ,rack ,ratchet set ,lifting the sleeve and other parts . It is most important to calculate the spiral driven and design and selection for the parts ,in this design process ；what is more ,used the knowledge of mechanical design ,in addition to used CAD tools such as AutoCAD Pro/E and so on
   This article described the whole process of its design from the spiral jack design to the selection of components and other aspects .It was precisely calculated because it used a large number of scientific processing theory and formula , especially in process planning . In the spiral transmission part , through the calculation of wear resistance , stability check of the screw , the calculation of the nut thread teeth ,self-locking of the check and variety of strength calculation .through a variety of scientific calculations the screw jack designed will meet the actual demand .In this design ,we used Pro/E to design a number of parts and transmission of three-dimensional modeling , it clearly show the various parts of the shape and structure .

  Keywords;  spiral , screw transmission AutoCAD , Pro/E

目錄

摘要 1
目錄 3
設(shè)計(jì)任務(wù)書 5
1緒論 7
1.1千斤頂?shù)陌l(fā)展?fàn)顩r 7
1.2 千斤頂?shù)母攀?nbsp;9
1.3千斤頂?shù)姆N類及應(yīng)用 10
2金屬材料的分析及選用原則 11
2.1金屬材料的分析 12
2.2 金屬材料的選用原則 14
3千斤頂材料的選擇及主要零件的加工工藝 15
3.1千斤頂主要零件材料選擇以及加工工藝 17
3.2托杯、底座和手柄材料的選擇 20
3.3螺母和螺桿材料的選擇 21
4 主要零件的參數(shù)設(shè)置及加工路徑分析 21
4.1概述 21
4.2桿類零件的材料、毛坯及熱處理 22
4.2.1桿類零件的材料 22
4.2.2桿類零件的熱處理 22
5工藝裝備的選擇 23
5.1夾具的選擇 23
5.2刀具的選擇 24
5.2.1刀具材料的基本要求 25
5.2.2常用的刀具材料 26
5.3量具的選擇 27
5.4切削用量的選擇 28
5.4.1對加工質(zhì)量的影響 28
5.4.2對刀具壽命的影響 28
5.4.3對加工時(shí)間的影響 29
5.4 進(jìn)給路線的確定 31
5.5加工順序的確定 33
5.5.1加工階段的劃分 33
5.5.2劃分加工階段的原因： 34
5.6 車螺紋時(shí)的主軸轉(zhuǎn)速的確定 38
5.7加工余量的確定 39
6螺紋類型的確定 40
6.1螺紋的選擇 40
7零件尺寸的計(jì)算 42
7.1螺桿 42
7.1.1螺桿直徑及螺紋的計(jì)算 42
7.1.2自鎖性的驗(yàn)證 43
7.1.3螺桿強(qiáng)度的驗(yàn)證 43
7.1.4螺桿穩(wěn)定性的驗(yàn)證 44
7.1.5螺桿柔度 45
7.2螺母 46
7.2.1螺母設(shè)計(jì)與計(jì)算 46
7.2.2螺母螺紋牙的強(qiáng)度計(jì)算 46
7.2.3安裝要求 47
7.3托杯的尺寸計(jì)算 47
7.4手柄 49
7.4.1手柄的設(shè)計(jì)與計(jì)算 49
7.4.2結(jié)構(gòu) 49
7.5底座設(shè)計(jì) 50
8千斤頂使用說明 51
8.1千斤頂?shù)墓ぷ髟?nbsp;51
8.2千斤頂?shù)氖褂米⒁馐马?xiàng) 52
致  謝 54
參考文獻(xiàn) 55

設(shè)計(jì)條件：
1、最大起重量F = 40kN；
2、最大升距H =200mm；
3、低速。