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Ishlov beriladigan zagotovkaning eng katta diametri, mm:
stanina ustida ……………………………………………………………………..………..….435 support ustida ………………………………………………………………………….……..224
Aniqlik sinfi GOST 8-82 bo’yicha ……………...………………………..…………….…….H
Markazlar orasidagi masofa,mm……………..………………………………..……………....710
Shpindelning aylanish chastotalar soni…..…………………………..………….…………22
Shpindelning eng katta aylanish chastotasi, ayl/min.……………….……….…2000
Shpindelning eng kichik aylanish chastotasi, ayl/min……………………………12.5
Surishlar soni …………………………………………………………………………………………..…....24 Keskichni surish, mm/ayl:
bo’ylama surish ……………………………………………………………………...0.7…4.16 ko’ndalang surish…………………………………………………..…………….0.035…2.8
Asosiy harakat elektrodvigatelining quvvati, kVt ……………………..….………...11 Supportni xarakatini o’zgartirish uchun
elektrodvigatelning quvvati, kVt ……………………………………………………..………0.75

STRUKTURA SETKALARINI GRAFIGINI QURISH

Har qanday dastgohni berilgan kesish tezligiga kerakli aniqlik bilan sozlashni ta’minlash uchun shpindelning quyidagi formula bo‘yicha hisoblanadigan n_min dan n_max gacha chegaradagi har xil aylanishlar chastotasiga o‘rnatish imkoniyatiga ega bo‘lish kerak:
1000*Vmin
n_min =,
*d_max
1000*Vmax
n_max =, ,
*d_min
bu erda V – kesish tezligi, m/min; d- zagotovka yoki asbob diametri, mm.
Shpindelning aylanishlar chastotasini rostlash diapazoni stanokning ekspluatatsion imkoniyatlarini xarakterlaydi va quyidagicha aniqlanadi:
nmax
D_n = .
n_min
Bosh harakat yuritmasi tezligini pog’onasiz rostlaydigan stanoklarda (zamonaviy stanoklar va RDB ishlov berish komplekslari) berilgan diametrga tanlangan kesish tezligiga mos aylanishlar chastotasini absolyut aniq o‘rnatish mumkin. Biroq ekspluatatsiyada mavjud ko‘p sonli stanoklar aylanishlar chastotasining pog’anali qatoriga ega. Shuning uchun, berilgan diametrda hisoblangan optimal kesish tezligini ta’minlaydigan chastota o‘rniga stanokda mavjudlaridan eng yaqin kichigini tanlashga to‘g’ri keladi. Bu haqiqiy n_h chastotaga
Vh =*d *nh , m/min
1000
kesish tezligi to‘g’ri keladi, va u hisobiydan (V-V_h) ga kichik.
Kesish tezligining nisbiy yo‘qotilishi quyidagi formula bo‘yicha aniqlanadi:
V−V_h 1000 *(*d *n_h) n−n_h
V_{= = =} , V 1000 n
n-n_h qancha kichik bo‘lsa bu farq ham shuncha kichik bo‘ladi.
n_min dan n_max gacha eng ratsional aylanishlar chastotasi maxraji φ bo‘lgan
geometrik progressiyada yotadi, ya’ni quyidagi munosabatni saqlash kerak bo‘ladi:
n₁ n₂ n_z −1 1
= = = =const. n2 n3 nz 