PRESS2010_EN

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4）np lewod6（×3ー24）np lewod6（×3ー2yno 61P・31P51LFyno 61P・31P51TS0180ℓ1TSTS1UTSTS）1f＋TS≧noitcelfed .xaM（）noitcelfed laitinI（1f1AL≧ST＋G（Length of 2）＋6（Thickness of push pin flange）＋FL－fmax（Max. deflection of spring）＋ℓ（thickness of 8）　Example：L≧150＋27＋6＋300－210＋10＝283 ・・・ select L＝290（5）Calculate according to the formula of projection length S of push pinS＞ST＋U（for the point is urethane）　Example：S＞150＋20＝170 ・・・ select S＝200S1（projection length at the end of stroke）＝S－ST　Example：S＝200＋150＝501STSD±0.5xam8.08.08.0LFーD9USS4SPfHSDBALH862ilℓGM15723RMℓLH2ilGS.URPーーN｛Kgf｝N/mm｛Kgf/mm｝4Push pin6Coil spring8Screw plug　MMSWZSH9（1）Selection of push pin diameter P and stroke ST（2）Assume the initial deflection of spring f1（3）Calculate according to the formula of free length F●How to select spring free length FL, spring case length L and projection length S of the push pin　 　Example：FL≧（150＋40）÷0.7＝271 ・・・ Select FL＝300　Example：P＝16, ST＝150　Example：f1＝40FL≧（ST＋f1）÷70%（the max. deflection ratio of spring）（4）Calculate according to the formula of spring case length L（8）Calculate the max. load Pmax.（1～9P）P＋0.5P＋0.5With urethane pointM12ーdM615Code No.FLPPAWP16 ー200d1d2±0.5In stockWith urethane pointM1 fmax（Max. deflection）＝FL×70％1〜9100%40〜50HRCNitriding 900HV（surface）10〜1920〜2930〜5095%90%85%51〜Enquiry107812573Oil-free pushingNo.●How to calculate the initial load P1, max. load Pmax and max. stroke STmax.（6）Calculate the initial deflection of spring f1f1＝FL－（L－G－6－ℓ）　Example：f1＝300－（290－27－6－10）＝53 ・・・ f1＝53（7）Calculate the initial load P1P1＝f1×K（spring constant）　Example：P1＝53［mm］×0.24［N/mm］＝12.7［N］（1.3［kgf］）Pmax＝（ST＋f1）×K（spring constant）　Example：P1＝（150［mm］＋53［mm］）×0.24［N/mm］＝48.7［N］（4.9［kgf］）STmax＝L－（G＋6＋FL－fmax＋ℓ）　Example：STmax＝290－（27＋6＋300－210＋10）＝157（9）Calculate the max. stroke STmax.MaterialHardnessSS400SKD61SWPーAS45C33〜38HRCUrethaneShore A90Next working dayEconomy type P.38Coil springCode No.Code131714.21.41620171.5PPAWP25.61.82022262.0FL 90125150175200250 90125150175200250300350 90150175200250300350400425450500NoOuter diameterd1Inner diameterWire diameterd2Quantity discount rate　 P.38（ Prices less than 1Yen are rounded off）fmax 63 87.5105122.5140175 63 87.5105122.5140175210245 63105123140175210245280298315350Max. deflectionMax. loadSpring constant＠/PStandard type0.63｛0.064｝5800.45｛0.046｝6100.37｛0.038｝6800.32｛0.033｝7600.27｛0.028｝8300.23｛0.023｝9600.80｛0.082｝7100.55｛0.056｝7600.47｛0.048｝8300.39｛0.040｝8900.34｛0.035｝9600.28｛0.029｝1,0900.24｛0.024｝1,2400.20｛0.020｝1,4300.95｛0.097｝6800.57｛0.058｝9500.48｛0.049｝1,0100.42｛0.043｝1,0800.33｛0.034｝1,2100.28｛0.029｝1,3600.24｛0.024｝1,4900.21｛0.021｝1,6300.20｛0.020｝1,6900.19｛0.019｝1,7600.17｛0.017｝1,910Loadkgf＝LoadN×0.10197239.2｛4｝49.0｛5｝58.8｛6｝Pre-holding Push Pin Sets