間歇式袋裝機(jī)傳動裝置設(shè)計說明書

.670.04=0.17m/s>0.08m/s3.3.3第二對錐齒輪第二對錐齒輪傳動參數(shù)見表3-3表3-3第二對錐齒輪傳動參數(shù)代號參數(shù)值小齒輪大齒輪齒形角20°20°大端面模數(shù)m44傳動比i11齒數(shù)z3030分錐角45°45°分度圓直徑d120120錐距R84.9684.96齒寬系數(shù)0.330.33齒寬b3030齒頂高44齒高h(yuǎn)99齒根高55齒頂圓直徑125.7125.7齒根角3.37°3.37°齒頂角2.70°2.70°頂錐角47.7°47.7°根錐角41.63°41.63°3.4直齒圓柱齒輪設(shè)計及計算1、選定齒輪類型、精度等級、材料及齒數(shù)1）齒輪類型為直齒圓柱齒輪。2）傳動裝置速度不高，故選用7級精度。3）材料選擇：查表可選擇兩齒輪材料為45鋼(調(diào)質(zhì))，主動輪硬度為280HBS從動輪硬度為240HBS。4）兩齒輪齒數(shù)Z1=Z2=402、按齒面接觸強(qiáng)度設(shè)計，按計算式試算即1）確定公式內(nèi)的各計算數(shù)值①試選載荷系數(shù)②主動輪傳遞轉(zhuǎn)矩 N.mm③由機(jī)械設(shè)計課本，查表10-7可選取齒寬系數(shù)④查表10-6可得材料的彈性影響系數(shù)。⑤查圖10-21d得按齒面硬度選取兩齒輪的接觸疲勞強(qiáng)度極限=。⑥按計算式計算應(yīng)力循環(huán)次數(shù)N1=N2=60n1jLh==5.4107⑦查圖10-19可選取接觸疲勞壽命系數(shù)。⑧計算接觸疲勞許用應(yīng)力取失效概率為1%，安全系數(shù)，按計算式(10-12)得=605MPa2）計算相關(guān)數(shù)值①試算小齒輪分度圓直徑，由計算公式得②計算圓周速度③計算齒高h(yuǎn)齒寬模數(shù)⑤計算載荷系數(shù)根據(jù)v=0.25m/s,7級精度，查表10-8可得動載系數(shù)，由表10-4直齒輪，，由表10-2查得使用系數(shù)=1.0由表10-14用插值法查得7級精度、小齒輪相對支承非對稱布置，由b/h=17.8，=1.491查圖10-13得=1.5故載荷系數(shù)⑥按實際的載荷系數(shù)校正所算得的分度圓直徑，按計算式得⑦計算模數(shù)m取模數(shù)m=3mm3）幾何尺寸計算=1\*GB3①兩齒輪齒數(shù)Z1=Z2=40,m=3mm,=20°，ha*=1,c*=0.25=2\*GB3②中心距a=(z1+z2)m/2=(40+40)32mm=120mm=3\*GB3③分度圓直徑d1=d2=mz1=340mm=120mm=4\*GB3④齒頂高h(yuǎn)a1=ha2=ha*m=3mm=5\*GB3⑤齒根高h(yuǎn)f1=hf2=(ha*+c*)m=(1+0.25)3mm=3.75mm=6\*GB3⑥齒全高h(yuǎn)1=h2=ha1+hf1=6.75mm=7\*GB3⑦齒頂圓直徑da1=da2=(z1+2ha*)m=(40+2)3mm=126mm=8\*GB3⑧齒根圓直徑df1=df2=(z1-2ha*-2c*)m=(40-2-0.5)3mm=112.5mm=9\*GB3⑨齒距p=m=33.14mm=9.42mm=10\*GB3⑩齒厚s=m/2=4.71mm3.5凸輪機(jī)構(gòu)的設(shè)計凸輪機(jī)構(gòu)通常由凸輪、推桿、機(jī)架三個基本構(gòu)件組成。其特點是凸輪具有曲線工作表面，利用不同的凸輪輪廓曲線可使推桿實現(xiàn)各種預(yù)定規(guī)律，并且簡單緊湊。根據(jù)裝置要求，為避免包裝袋在切刀處積壓而影響熱封及剪切，需要凸輪有急回特性。故采用偏置擺動滾子推桿盤形凸輪機(jī)構(gòu)，這種推桿由于滾子與凸輪輪廓之間為滾動摩擦，所以磨損比較小。且凸輪運動規(guī)律為等速運動規(guī)律，利于與裝置其他部件協(xié)調(diào)。為不產(chǎn)生過大沖擊，凸輪的運動采用正弦運動曲線。凸輪機(jī)構(gòu)見圖凸輪設(shè)計主要參數(shù)由《機(jī)械原理》（第七版）可知，基圓半徑r應(yīng)符合：r凸輪的基圓半徑為r≥從動件擺角φ：8.35度滾子半徑Rr：16mm基圓半徑Rb：50mm遠(yuǎn)休止角β‘：72度回程運動角β2：108度中心距L：250mm推程運動角β1：108度2.擺動滾子從動件凸輪設(shè)計計算公式3.凸輪設(shè)計計算值列表轉(zhuǎn)角θ(度)壓力角α(度)工作輪廓Xn工作輪廓Yn工作輪廓rn工作輪廓φn(度)位移速度加速度0-13.815-31.71720.21150.047-17.2460005-14.644-32.98416.32750.055-22.2470.005-0.1864.23510-16.968-34.21912.25150.157-27.2450.043-0.7298.11415-20.379-35.4487.98450.462-32.2330.142-1.58211.31120-24.3-36.693.49851.063-37.2020.326-2.67513.55825-28.122-37.933-1.2552.031-42.1430.613-3.91614.66630-31.354-39.136-6.30553.411-47.0461.011-5.19914.54235-33.697-40.229-11.69855.211-51.9021.518-6.41813.19540-35.028-41.12-17.43657.406-56.712.126-7.4710.7445-35.335-41.709-23.49459.937-61.4722.815-8.2667.38350-34.666-41.891-29.80862.711-66.1973.559-8.743.40555-33.093-41.573-36.27865.617-70.8974.33-8.852-0.85960-30.703-40.685-42.77768.526-75.5885.093-8.592-5.0565-27.605-39.189-49.15171.313-80.2865.819-7.983-8.81870-23.941-37.076-55.23873.863-85.0076.478-7.075-11.84475-19.901-34.365-60.87776.081-89.7627.047-5.945-13.87680-15.721-31.084-65.92177.902-94.5617.512-4.687-14.74185-11.671-27.264-70.2579.298-99.4077.865-3.408-14.36890-8.027-22.934-73.78680.275-104.3018.109-2.215-12.78895-5.039-18.129-76.49180.874-109.2378.257-1.208-10.133100-2.905-12.89-78.37881.171-114.2078.328-0.471-6.627105-1.756-7.269-79.50281.265-119.1988.349-0.067-2.564110-1.569-1.338-79.94381.268-124.1988.34900115-1.5694.652-79.77481.268-129.1988.34900120-1.56910.606-78.99981.268-134.1988.34900125-1.56916.479-77.62281.268-139.1988.34900130-1.56922.228-75.65581.268-144.1988.34900135-1.56927.807-73.11181.268-149.1988.34900140-1.56933.174-70.01281.268-154.1988.34900145-1.56938.289-66.37981.268-159.1988.34900150-1.56943.113-62.24181.268-164.1988.34900155-1.56947.608-57.6381.268-169.1988.34900160-1.56951.741-52.5881.268-174.1988.34900165-1.56955.48-47.1381.268-179.1988.34900170-1.56958.797-41.32181.268-184.1988.34900175-1.56961.667-35.19781.268-189.1988.34900180-1.56964.067-28.80681.268-194.1988.34900185-1.05565.926-22.22681.258-199.28.3450.186-4.2351900.42367.13-15.52381.134-204.2188.3070.729-8.1141952.72167.639-8.76480.788-209.2638.2081.582-11.3112005.64267.434-2.04780.124-214.3478.0242.675-13.5582058.94766.524.50179.077-219.4757.7373.916-14.66621012.37764.91910.73977.612-224.657.3395.199-14.54221515.67262.67116.52675.732-229.8696.8326.418-13.19522018.59659.83621.73773.474-235.1266.2247.47-10.7422520.9456.49426.28470.908-240.4095.5358.266-7.38323022.52552.74530.12668.131-245.7044.7918.74-3.40523523.18848.69333.27665.256-250.9964.028.8520.85924022.77544.43635.79862.405-256.2713.2578.5925.0524521.14540.04737.79759.695-261.5162.5317.9838.81825018.19735.56839.40357.231-266.7231.8727.07511.84425513.94231.02840.74755.095-271.891.3035.94513.8762608.59826.4641.94653.341-277.0180.8384.68714.7412652.66621.93743.08151.994-282.110.4853.40814.368270-3.13417.5644.19151.045-287.1740.2412.21512.788275-8.07313.43345.26750.454-292.2140.0931.20810.133280-11.6199.62246.25750.155-297.2360.0220.4716.627285-13.5086.16547.07550.055-302.2450.0010.0672.564290-13.8133.05947.61950.051-307.2450.00100295-13.8130.00847.80150.051-312.2450.00100300-13.813-3.04347.6250.051-317.2450.00100305-13.813-6.07147.07750.051-322.2450.00100310-13.813-9.05246.17550.051-327.2450.00100315-13.813-11.96544.92250.051-332.2450.00100320-13.813-14.78643.32750.051-337.2450.00100325-13.813-17.49541.40350.051-342.2450.00100330-13.813-20.07139.16350.051-347.2450.00100335-13.813-22.49436.62550.051-352.2450.00100340-13.813-24.74633.80850.051-357.2450.00100345-13.813-26.8130.73450.051-362.2450.00100350-13.813-28.6727.42750.051-367.2450.00100355-13.813-30.31123.9150.051-372.2450.001003.7聯(lián)軸器的選擇計算蝸桿減速器輸出軸端的半聯(lián)軸器：參閱機(jī)械設(shè)計手冊，由于電動機(jī)轉(zhuǎn)速1400r/min,轉(zhuǎn)速小，實際轉(zhuǎn)矩遠(yuǎn)小于聯(lián)軸器公稱轉(zhuǎn)矩，確定型號取GYS5凸緣聯(lián)軸器J142*60GB/T5843—2003A型鍵槽;同理，主軸端的半聯(lián)軸器，確定型號取GYS4凸緣聯(lián)軸器J130*60GB/T5843—2003A型鍵槽。3.8無極變速器的選擇與性能要求包裝執(zhí)行機(jī)構(gòu)工作速度需要連續(xù)無極變化，以合理利用包裝材料，電機(jī)功率保證產(chǎn)品質(zhì)量。機(jī)械無極變速可通過控制電機(jī)輸出轉(zhuǎn)速或機(jī)械變速機(jī)構(gòu)實現(xiàn)，使得執(zhí)行機(jī)構(gòu)的輸出在2個極限范圍內(nèi)連續(xù)變化。無級變速的種類很多，大都利用摩擦來傳遞運動及功率，機(jī)械式無極變速結(jié)構(gòu)比較簡單，效率高，空間體積小。常見的有金屬帶式無級變速和V帶無極變速裝置，因無極變速器傳動i3=3，故