Detal konstruksiyasi texnologikligini taxlili


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KURS ISHI MASHINASOZLIK

n = ayl/min.
Bu yerda:
V = 64m/min, kesish tezligi
D = 14 mm, parma diametri
5. Stanok 2M125 tezliklar qutisidan 𝑛𝑐𝑑 = 1400 π‘Žπ‘¦π‘™/π‘šπ‘–π‘› deb belgilaymiz
Shunda xaqiqiy kesish tezligi quyidagi formula bilan topiladi
m/min (~ 0,26 m/s).
6. Frezalashda aylanma momentni hisoblaymiz.
Aylanma moment quyidagi formula bilan topiladi;
π‘€π‘˜π‘Ÿ = 10 βˆ™ πΆπ‘š βˆ™ π·π‘ž βˆ™ 𝑆𝑦 βˆ™ πΎπ‘šπ‘= 10 βˆ™ 0.0345 βˆ™ 142.0 βˆ™ 0.110.8 βˆ™ 0.24 = 1,28 π»π‘š
Bu yerda:
πΆπ‘šβˆ’ aylanma moment koeffitsiyenti, πΆπ‘š = 0.0345 (STM-2, 281 b, 32 j.)
𝑆 βˆ’ aylanishda uzatish, S=0.11 mm/ay
𝐷 βˆ’ keskich diametri, D = 14 mm
𝑦 = 0.8; π‘ž = 2.0; (STM-2, 281 b. 32 j.)
πΎπ‘šπ‘ βˆ’ to’g’irlash koeffitsiyenti, πΎπ‘šπ‘ = 0.24 (STM-2, 264 b, 9 j,)
7. Frezalashda o’qdagi kuchni aniqlash.
O’qdagi kuch quyidagi formula bilan topiladi:
𝑃𝑧= 10 βˆ™ 𝐢𝑝 βˆ™ π·π‘ž βˆ™ 𝑆𝑦 βˆ™ πΎπ‘šπ‘=10 βˆ™ 68 βˆ™ 141.0 βˆ™ 0.110.7 βˆ™ 0.24 = 233.22 𝐻 βˆ™ π‘š
Bu yerda:
πΆπ‘βˆ’ koeffitsiyenti, 𝐢𝑝 = 68 (STM-2, 281 b, 32 j.)
𝑆 βˆ’ aylanishda uzatish, S=0.11 mm/ayl
𝐷 βˆ’ keskich diametri, D = 14 mm
𝑦 = 0.7; π‘ž = 1.0; (STM-2, 281 b. 32 j.)
πΎπ‘šπ‘ βˆ’ to’g’irlash koeffitsiyenti, πΎπ‘šπ‘ = 0.24 (STM-2, 264 b, 9 j,)
8. Frezalashda kesish quvvatini hisoblash.
Kesish quvvati quyidagi formuladan topiladi:
Nkes = kVt.
Bu yerda: π‘€π‘˜π‘ = 0.63 Hm, Frezalashda aylanma moment
n = 1400 ayl/min, aylanishlar soni
9. O’rnatish kuchi quvvatini hisoblash
O’rnatish kuchi quvvati quyidagi formuladan topiladi:
𝑁𝑐𝑦=𝑁𝑒/πœ‚π‘π‘¦=0,92/0.9 = 1,2 π‘˜π‘‰π‘‘
Bu yerda: 𝑁𝑒= 0.92 kVt, kesish quvvati
πœ‚π‘π‘¦ = 0.9, 2M125 stanogi uchun o’rnatish kuchi quvvati
10. Vaqtni hisoblash.
Donali vaqtni hisoblash formulasi:
π‘‡π‘ β„Žπ‘‘ = 4 βˆ™ (π‘‡π‘œ + 𝑇𝑣𝑠𝑝 + π‘‡π‘œπ‘π‘ )
Bu yerda:
π‘‡π‘œβˆ’ asosiy vaqtni hisoblash,
T0 =
𝑇𝑣𝑠𝑝 βˆ’ yordamchi vaqt,
𝑇𝑣𝑠𝑝 = 0.2 βˆ™ π‘‡π‘œ = 0.2 βˆ™ 0.17 = 0.034 π‘šπ‘–π‘›
𝑇𝑣𝑠𝑝 = 0.2 βˆ™ π‘‡π‘œ = 0.2 βˆ™ 0.17 = 0.034 π‘šπ‘–π‘›
π‘‡π‘œπ‘π‘  = 0.3 βˆ™ (π‘‡π‘œ + 𝑇𝑣𝑠𝑝) = 0.3 βˆ™ (0.17 + 0.034) = 0.061 π‘šπ‘–π‘›

XULOSA.
Mazkur kurs ishisida β€œQopqoq” detalini xomashyo chizmasidan tayyor detal olishgacha bo’lgan operatsion ketma ketliklar bajarilgan.Kurs ishida texnologik jarayonni ishlashdan maqsad –Detalga eng ratsinal va iqtisodiy ishlov berish usullarini o’rnatish. Bunda detalning yuza g’adir budirligi, o’qlar va yuzalarning o’zaro joylashish aniqligi talab qilingan darajada bajarilishini taminlab,detalni yig’ilgan mashinada normal taminlashdan iborat. Qopqoq chizmasi KOMPAS dasturi vositasida chizildi.
Taklif qilangan texnologiya buyicha detalga ishlov berishda detal
tayyorlash tannarxini arzonlashtirish imkonini beradi.

Foydalanilgan adabiyotlar ro’yxati
1. Spravochnik texnologa – mashinostroitelya. T.1. A.G. Kosilova va
P.K. Mesheryakova. 1972 y.
2. Spravochnik texnologa – mashinostroitelya. T.2. A.G. Kosilova va
P.K. Mesheryakova. 1972 y.
3. Sbornik zadach I primerov po rezaniyu metalov I rejushemu
instrument. Nefedov N.A., 1984 y.
4. Kursovoye proyektirovaniye po texnologii mashinostroyeniya.
Gorbatsevich A.F. 1983 y
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