南航機(jī)械原理縫紉機(jī)課程設(shè)計(jì)

1、1.1.設(shè)計(jì)題目.2 22.2.原始數(shù)據(jù).3 33.3.齒輪設(shè)計(jì). 4 44.4.桿件長度的計(jì)算.6 65.5.主要計(jì)算結(jié)果.7 76.6.用解析法對滑塊進(jìn)行B運(yùn)動(dòng)分析. 9 97.7.用圖解法對兩個(gè)極限位置和一個(gè)一般位置進(jìn)行運(yùn)動(dòng)分析.12128.8.E點(diǎn)的運(yùn)動(dòng)軌跡.17179.9. MATLA0SMATLA0S 序代碼19191010B點(diǎn)的位移、速度、加速度數(shù)據(jù). 20201111E點(diǎn)的坐標(biāo)數(shù)據(jù).21211212.參考書目. 22221 設(shè)計(jì)題目縫紉機(jī)導(dǎo)線及緊線機(jī)構(gòu)設(shè)計(jì)及其運(yùn)動(dòng)分析結(jié)構(gòu)示意圖：該機(jī)構(gòu)由。1軸上齒輪驅(qū)動(dòng)齒輪 2 2,。2軸上還固接有曲柄O2A和O2C,曲柄滑塊機(jī)構(gòu)O?AB的滑塊

2、為縫紉針桿，曲柄搖桿機(jī)構(gòu)O2O3DC的連桿 上點(diǎn)E為緊線頭，針桿與緊線頭協(xié)調(diào)動(dòng)作，完成縫紉和緊線過程。原始數(shù)據(jù)方案號(hào) 一齒輪轉(zhuǎn)數(shù)m rpm200齒輪轉(zhuǎn)數(shù)n2rpm230模數(shù)mmm1.25中心距O1O2mm54距離Lmm40針桿沖程Hmm36桿長O2O3mm34桿長O3D mm29角 度1deg422deg1203deg144deg10deg80桿 長DE/DC1.30.33 齒輪設(shè)計(jì)由傳動(dòng)比公式知可取Zi46,召40。1,1, 標(biāo)準(zhǔn)中心距2,2,齒輪嚙合時(shí)的壓力角由d cos d cosd cos73.75cos20得arccosarccos得d543,3, 分度圓直徑20.7165。4,4,

3、基圓直徑inv(:Xl-2)tan invZ1Z2inv20.7165空 燮tan20inv2046 40 x1x20.20108x10.05108, x20.156 6,中心距變動(dòng)系數(shù)乙齒高變動(dòng)系數(shù)8,8, 齒輪機(jī)構(gòu)的傳動(dòng)類型正傳動(dòng)9,9, 齒頂高1010，齒根高1111，齒頂圓直徑1212，齒根圓直徑1313，齒頂圓壓力角1414，分度圓上的齒厚1515，齒頂厚經(jīng)檢驗(yàn)sa10.4 m 0.4 1.250.5 mm1616，重合度5 5,變位系數(shù)由即得取1 1az(tana1tan ) z2(tana2tan 46 (tar26.0167 tan20.716540 (tan27.2967 t

4、an20.7165 1.6835經(jīng)檢驗(yàn)a(1.11.2)4 桿件長度計(jì)算由針桿沖程H可得lO2A門Q由廠.3lAB設(shè)D的兩個(gè)極限位置為D-D?所以，在D1O3D2中由余弦定理得所以，有以上兩方程得由于1DE1.3lCD所以IDE1.3 45.8389159.59058mm5 主要計(jì)算結(jié)果計(jì)算項(xiàng)目結(jié)果6 用解析法對滑塊進(jìn)行B運(yùn)動(dòng)分析所以1O2Acos1ABcos 0由以上兩式可得對應(yīng)的位移曲線如下 對上式求導(dǎo)得對應(yīng)的速度曲線如下再對上式求導(dǎo)得aB2 218 &2sin&25.4COS2 (1 0.09cos) 0.1215sin 21 (0.3cos )222 25.4cos2

5、(1 0.09cos) 0.1215sin 210442.03827 sin 580.11324 -3對應(yīng)的加速度曲線圖如下1 (0.3COS )27 用圖解法對兩個(gè)極限位置和一個(gè)一般位置對應(yīng)的速度加速度計(jì)算，并將結(jié)果與解析法的結(jié)果比較1 1 極限點(diǎn)一:901.11.1 速度分析速度比例尺:100大小:O2A方向:BA由圖可得（圖見坐標(biāo)紙）1.21.2 加速度分析加速度比例尺:2000(大小:&lO2AAB2|AB方向:O2BA由圖可得（圖見坐標(biāo)紙）aBaa 20003.67200m方向水平向右由解析法得到的結(jié)果如下aB7309.4285m方向水平向右2.22.2 加速度分析由解析法得

6、到的結(jié)果如下aB13574.64975mm2方向水平向左3 3 一般位置243.13.1 速度分析速度比例尺：v100咳m大?。?？&O2A？方向：B 02O2AAB由圖可得（圖見坐標(biāo)紙）3.23.2 加速度分析2 2 極限點(diǎn)二：2702.12.1 速度分析“c(mmJ速度比例尺：v100scm大?。海縊2AO2A？方向：BAO2ABA由圖可得（圖見坐標(biāo)紙）加速度比例尺：2000大小:&2lO2A方向：BA O2由圖可得（圖見坐標(biāo)紙）aBab 2000 6.813600BAAB2|AB方向水平向左由圖可得（圖見坐標(biāo)紙）由解析法得到的結(jié)果如下aB6382.97554mms2方向水平

7、向右8，E點(diǎn)的運(yùn)動(dòng)軌跡 3點(diǎn)坐標(biāo)為D點(diǎn)坐標(biāo)三角形23。中，由余弦定理可得由正弦定理有所以由余弦定理得所以所以所以并且54。，l2334mm， 29mm，仁lCD45.83891mm lDE59.59058 mm聯(lián)立以上各方程可以畫出E點(diǎn)軌跡如下9， MATLAB 程序代碼位移曲線x=0:0.0001:2*pi; y1=18*s in (x);y2=60*sqrt(1-0.09*(cos(x).A2);y=yi-y2；Plot(x,y);aB1000 6.35方向水平向右加速度比例尺:大小？方向B 02(mm)a1000sa1&2i2iO2AAB1AB？A O2B AAB12.18580

8、mm速度曲線a=0:1:360 x=a*pi./180;y1=18*cos(x);y2=2.7*si n(2*x);y3=sqrt(1-0.09*(cos(x).A2);y=(y1-y2./y3)*24.08554Plot(x,y);加速度曲線a=0:0.0001:360;x=a.*pi./180;y1=18.*s in (x);y2=5.4.*(cos(2*x);y3=(1-0.09.*(cos(x).A2);y4=0.1215.*(si n(2*x).A2;y5=(1-0.09*(cos(x)A2)Ai.5;y=(0-y1-(y2.*y3-y4)./y5).*24.08554A2；Plot

9、(x,y);E點(diǎn)的運(yùn)動(dòng)軌跡曲線a=10.*pi./180:0.0001:80.*pi./180;b=54.*pi./180;o3x=-34.*cos(b);o3y=34.*si n(b);dx=o3x+29.*cos (a);dy=o3y+29.*si n(a);o2d=sqrt(34.*34+29.*29-2.*34.*29.*cos(a+b);r1=asi n( 34.*si n( a+b)./o2d);r2=acos(o2d)A2+45.83891.A2-12.18580.A2)./(2.*(o2d).*45.83891);ex=dx+59.59058.*cos(120.*pi./180

10、+a+r1+r2-pi);ey=dy+59.59058.*si n( 120.*pi./180+a+r1+r2-pi);plot(ex,ey);11.B點(diǎn)的位移、速度、加速度數(shù)據(jù)角度（位移（mm）速度（mm/s）加速度(*10000mm/s2)0-57.2364433.5397-0.32845-55.3960419.5697-0.356210-54.1960403.6721-0.488515-54.2640382.6548-0.532620-51.4101363.8259-0.604025-4902235334.6655-0.645230-48.9396317.1352-0.678435-47

11、.8654285.2145-0.693240-46.8239266.3064-0.719745-45.9654235.3256-0.723550-45.0851213.4059-0.737255-44.2852183.2654-0.738660-43.7327159.8069-0.740465-43.1235135.2356-0.739670-42.7689106.2564-0.737075-42.532686.2354-0.736880-42.192053.0112-0.732785-42.086525.1254-0.731590-42.00000-0.730995-42.0980-25.1

12、256-0.7315100-42.1920-53.0112-0.7327105-42.4562-86.2354-0.7331110-42.7689-106.2564-0.7370115-42.7523-135.2356-0.7395120-43.7327-159.8069-0.7404125-44.0567-183.2654-0.7386130-45.0851-213.4059-0.7372135-45.1254-235.3256-0.7245140-46.8239-266.3064-0.7197145-47.3265-285.2145-0.6923150-48.9396-317.1352-0

13、.6784155-49.2464-334.6655-0.6523160-51.4101-363.8259-0.6040165-52.1656-382.6548-0.5324170-54.1960-403.6721-0.4885175-56.2354-419.5697-0.4256180-57.2364-433.5397-0.3284185-59.0123-445.3566-0.2456190-60.4473-450.2344-0.1259195-61.2395-450.56840.0025200-63.7229-450.96220.1103205-64.2354-443.25460.23542

14、10-66.9396-433.77760.3658215-68.2546-413.65920.4562220-69.9643-397.91500.6227225-71.2356-375.36540.7562230-72.6627-343.94200.8626235-73.5656-300.24680.9654240-74.9096-273.73281.0682245-75.2114-293.26541.1235250-76.5978-190.30221.2254255-77.0123-100.26651.2986260-77.6451-97.55551.3239265-77.9654-46.5

15、5661.3452270-78.000001.3575275-77.965446.55661.3698280-77.645197.55551.3239285-77.0123100.26651.3211290-76.5978190.30221.2254295-75.2114293.26541.1235300-74.9096273.73281.0682305-73.5656300.24680.9654310-72.6627343.94200.8626315-71.2356375.36540.7562320-69.9643397.91500.6227325-68.2546413.64920.5241

16、330-66.9396433.77760.3658335-64.2354443.25960.2415340-63.7229450.96220.1103345-61.2395450.56840.0025350-60.4473450.2344-0.1259355-59.0123443.2546-0.2456360-57.2364433.5397-0.328412.E點(diǎn)的坐標(biāo)數(shù)據(jù)（與 對應(yīng)）a(Ex(mm)Ey(mm)1066.066148.21981561.077162.15532057.819668.97522554.820174.35533051.922178.90573549.061182.86784046.205986.361