Monga njira yotumizira, zida za mapulaneti zimagwiritsidwa ntchito kwambiri m'zinthu zosiyanasiyana zaumisiri, monga zida zochepetsera, crane, zochepetsera zida za mapulaneti, ndi zina zotero. Kwa makina ochepetsera mapulaneti, amatha kusintha njira yotumizira sitima ya axle yokhazikika nthawi zambiri. Chifukwa njira yotumizira magiya ndikulumikizana kwa mzere, meshing kwanthawi yayitali imayambitsa kulephera kwa zida, chifukwa chake ndikofunikira kutengera mphamvu zake. Li Hongli et al. adagwiritsa ntchito njira yolumikizira ma meshing kuti amange zida zapadziko lapansi, ndipo adapeza kuti torque ndi kupsinjika kwakukulu ndizofanana. Wang Yanjun et al. idalumikizanso zida zapapulaneti kudzera munjira yodziwikiratu, ndikutengera ma statics ndi kayeseleledwe ka mapulaneti. Papepalali, zinthu za tetrahedron ndi hexahedron zimagwiritsidwa ntchito makamaka kugawa mauna, ndipo zotsatira zomaliza zimawunikidwa kuti muwone ngati mphamvu zakwaniritsidwa.

1, Kukhazikitsidwa kwachitsanzo ndi kusanthula zotsatira

Ma modeling atatu a mapulaneti

Zida za mapulanetiimapangidwa makamaka ndi zida za mphete, zida za dzuwa ndi zida za mapulaneti. Zosankha zazikulu zomwe zasankhidwa mu pepala ili ndi: chiwerengero cha mano a mphete yamkati ya gear ndi 66, chiwerengero cha mano a dzuwa ndi 36, chiwerengero cha mano a pulaneti ndi 15, m'mimba mwake kunja kwa zida zamkati. mphete ndi 150 mm, modulus ndi 2 mm, kuthamanga kwa ngodya ndi 20 °, m'lifupi la mano ndi 20 mm, kutalika kwa addendum ndi 1, coefficient backlash ndi 0,25, ndipo pali magiya atatu a mapulaneti.

Static kayeseleledwe kusanthula zipangizo mapulaneti

Tanthauzirani zinthu zakuthupi: lowetsani dongosolo la zida zapadziko lonse lapansi zokokedwa mu pulogalamu ya UG mu ANSYS, ndikuyika magawo azinthu, monga momwe tawonetsera mu Gulu 1 pansipa:

Meshing: The finite element mesh imagawidwa ndi tetrahedron ndi hexahedron, ndipo kukula kwake kwa chinthucho ndi 5mm. Kuyambira kuzida za mapulaneti, zida za dzuwa ndi mphete zamkati zimalumikizana ndi mauna, mauna olumikizana ndi ma mesh amachulukitsidwa, ndipo kukula kwake ndi 2mm. Choyamba, ma gridi a tetrahedral amagwiritsidwa ntchito, monga momwe tawonetsera pa Chithunzi 1. Zinthu za 105906 ndi 177893 nodes zimapangidwira zonse. Kenako gululi hexahedral anatengera, monga momwe chithunzi 2, ndi 26957 maselo ndi 140560 mfundo amapangidwa onse.

Katundu wogwiritsa ntchito ndi malire: molingana ndi momwe ma giya a mapulaneti amagwirira ntchito mu chochepetsera, zida zadzuwa ndiye zida zoyendetsera, zida zapapulaneti ndi zida zoyendetsedwa, ndipo kutulutsa komaliza kumadutsa chonyamulira mapulaneti. Konzani mphete yamkati mu ANSYS, ndipo ikani torque ya 500N · m ku zida za dzuwa, monga momwe chithunzi 3 chikusonyezera.

Kusanthula kwa positi ndi kusanthula zotsatira: Nephogram ya kusamuka ndi kupsinjika kofanana ndi kusanthula kokhazikika komwe kumapezeka m'magawo awiri a gridi kumaperekedwa pansipa, ndikuwunika kofananira kumachitidwa. Kuchokera pa nephogram ya mitundu iwiri ya ma grids, amapezeka kuti kusamuka kwakukulu kumachitika pamalo pomwe zida za dzuwa sizimalumikizana ndi zida zapadziko lapansi, ndipo kupsinjika kwakukulu kumachitika pamizu ya ma mesh. Kupanikizika kwakukulu kwa gridi ya tetrahedral ndi 378MPa, ndipo kupsinjika kwakukulu kwa gridi ya hexahedral ndi 412MPa. Popeza malire a zokolola ndi 785MPa ndipo chitetezo ndi 1.5, kupanikizika kovomerezeka ndi 523MPa. Kupsyinjika kwakukulu kwa zotsatira zonsezo kumakhala kochepa kusiyana ndi kupanikizika kovomerezeka, ndipo onse amakumana ndi mphamvu.

2, Mapeto

Kupyolera mu kuyerekezera kwazinthu zapadziko lapansi, kusamuka kwa nephogram ndi kupsinjika kofanana ndi nephogram ya dongosolo la zida zimapezedwa, komwe kuchuluka kwakukulu ndi kochepa komanso kugawa kwawo muzida za mapulanetichitsanzo chingapezeke. Malo omwe ali ndi mphamvu yofanana kwambiri ndi malo omwe mano a gear amatha kulephera, choncho chidwi chapadera chiyenera kuperekedwa kwa izo panthawi yokonza kapena kupanga. Kupyolera mu kusanthula dongosolo lonse la zida za mapulaneti, cholakwika chomwe chimabwera chifukwa cha kusanthula kwa dzino limodzi lokha la gear chimagonjetsedwa.