Tema. Mashina mexanizmler teoriyasι pa`nine kirispe
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Mashina mexanizmler teoriyasi
Kulachoklι mexanizmlerdin` kinematikalιq analizi.
Kulachoklι mexanizmlerdin` kinematikalιq analizinin` wazιypasι orιnlar planιn qurιw ha`m kulachok qozg`alιsιnιn` berilgen nιzam boyιnsha mexanizmnin` berilgen sxemasιnda jeteleniwshi zvenonιn` qozg`alιs nιzamιn anιqlaw bolιp tabιladι. Jetekleniwshi zveno qozg`alιsιnιn` nιzamι ilgerlemeli qozg`alatug`ιn shtanga ushιn S = S(5) tu`rinde boladι, bundag`ι S shtanganιn` orιn awιstιrιwι, 5- qozg`alιs waqtι, aylanbalι qozg`alιs ushιn ψ = ψ (5) tu`rinde boladι, bundag`ι ψ -burιlιw mu`yeshi. Kulachoklι mexanizmnin` kinematikalιq analizinde qozg`alιstι keri aylandιrιw metodιn paydalang`an qolaylι. Bul metodtιn` ma`nisi to`mendegishe , kulachoklι mexanizmge kulachok orayιnιn` do`gereginde ω mu`ykshlik tezliktegi aylanιs beriledi,- ω mu`yeshlik tezlik kulachoktιn` mu`yeshlik tezligine ma`nisi jag`ιnan ten`, biraq qarama-qarsι bag`ιtlang`an. Bunιn` na`tiyjesinde kulachok qozg`almaytug`ιn boladι, al na`tiyjede zveno tirewish penen birge kulachok do`gereginde aylanbalι qozg`alιs jasaydι. Qozg`alιstι keri aylandιrιw metodι kulachoktιn` forma profilinbir ma`rte sιzιp shιg`ιwg`a mu`mkinshilik tuwg`ιzadι, al jetekleniwshi zvenonιn` keri aylandιrιw qozg`alιsιndag`ι salιstιrmalι orιnlarιn qurιwg`a qιyιnshιlιq tuwdιrmaydι. Shtangasι bar tsentrlik kulachoklι mexanizmnin` analizi. Kulachoklι mexanizmnin` sxemasι (6-su`wret) ha`m kulachok qozg`alιsιnιn` nιzamι ω a` = s9ns5 berilgen Orιnlar planιn qurιw ha`m shtanga qozg`alιsιnιn` S = S(5) nιzamιn anιqlaw kerek Keri aylandιrιw qozg`alιsιndag`ι kulachoklι mexanizmnin` orιnlar planιn quramιz. Mexanizmnin` da`slepki ornι retinde 2-shtanganιn` en` to`mengi ornιn (A 0 tochkasιn) alayιq. Shtanganιn` da`slepki ornιn to`mendegi o`lshem menen anιqlaymιz. S 0 = OA 0 Tsikl boyιnsha keri aylandιrιw qozg`alιsιnda kulachoktιn` do`gereginde burιlιw mu`yeshlerine proportsional` ten` waqιt aralιqlarι arqalι 2 shtanganιn` bir qatar ju`riw ornιn salamιz. Bunιn` ushιn radiusι OA 0 = R m8n bolatug`ιn M shen`berdi ju`rgizemiz ha`m onι ω a` bag`ιtιnda bir qatar ten` bo`leklerge bo`lemiz. Keri aylandιrιw qozg`alιsιndag`ι shtanga sιzιg`ι ha`r bir ju`rgen ornιnda M shen`beri bo`leklerinin` sa`ykes tochkasι arqalι ha`m kulachoktιn` aylanιw orayι bolιp tabιlatug`ιn O PDF created with pdfFactory Pro trial version www.pdffactory.com 24 tochkasι arqalι o`tiwi kerek. Bunda shtanganιn` A tochkasι kulachoktιn` teoriyalιq profilinde jatιwι kerek. Usιlayιnsha qurιlg`an kesindi keri aylandιrιw qozg`alιsιndag`ι kulachoklι mexanizmnin` orιnlar planι bolιp tabιladι. Shtanganιn` qozg`alιs nιzamιn anιqlaymιz, ol ushιn shtanganιn` sιzιqlιq ornιn awιstιrιw S = S(T) grafigin quramιz (7-su`wret). Koordinatalardιn` tik mu`yeshli sistemasιnda abtsissa ko`sheri boyιna waqιtιn, al ordinata ko`sheri boyιna ha`r bir o`tilgen orιndι shtanga qozg`alιsι boyι menen O tochkasιnan A tochkasιna deyin o`lshenetug`ιn shtanganιn` S orιn awιstιrιwιn salamιz. Abtsissa ko`sheri boyιna tsikl waqtιna sa`ykes I = g`π / ω sek ko`rsetkishin I mm x I kesindisi retinde salamιz ha`m onι 7-su`wrette ko`rsetilgendey M shen`berinin` bo`liniwine sa`ykes bir shetinen ten` intervallarg`a bo`lemiz. Waqιt masshtabι k = T / x Download 0.88 Mb. Do'stlaringiz bilan baham: |
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