Urganch Davlat Universiteti “Texnika” fakulteti

Tokarlik dastgohi OT4
Parametrlar O’lchamlar

Stanina ustida ishlov beriladigan detalning eng katta diametri x markazlari orasidagi eng katta masofa, mm	250 x 460
Bir supportni ishlov berish uzunligi, mm	500
Mertik rezba qadami, mm	0.25 – 3.5
Shpindel aylanish chastotasi, ayl/min	33.5 – 3300
Uzatishning ishchi chegarsi, ayl/min Uzunasiga Ko’ndalangiga	0.05 – 0.7 Qo’lda
Dastgoh gabariti(uzunligi x kengligi x balandligi), mm	1550 x 700 x 1360
Dastgoh massasi, kg	535
Elektrodvigatel quvvati, Kvt	1.5

Frezalash (Tish ochish )dastgohi 6T104
Parametrlar O’lchamlar

Ish stoli oynasi o’lchovi, mm	1250 x 260
Stolning maksimal xarakati, mm	800
Stol bo’ylama harakatlantirish, mm	220
Shpindelni aylanish chastotasi, ayl/min	50 – 2240
Shpindel uzatmalri soni, ta	12
Pinol yo’li, mm	60
Stol markaziga tushadigan maksimal o’g’rlik, kg	200
Dastgox elektrodvigatel yordamida ishlaydi
Stolning ishchi uzatmasi, ta	18
Vertikal shpindelda gilza harakati, mm	60
Limbning ishchi yo’li, mm	0.05
Vertikal shpindeldan stolgacha bo’lgan masofa, mm	45 – 400
Freza kallagi o’qidan yo’naltiruvchi staninagacha bo’lgan masofa, mm	300
Freza diskining maksimal diametri, mm	100

6. Qo’yimlarni hisoblash
Tashqi aylanish sirtiga ishlov berish 23m6


2Z_{i min} = 2(R_{z i-1} + h_i-1 + ) =
р_m = 0.25 = 0.25 = 0.41 mm
р_ks = Δ_ks* l = 0.0015*15 = 0.0225 mm
р_z = = = 410 mm
р₁ = 0.06 * 410 = 24.6 mm
р₂ = 0.04 * 410 = 16.4 mm

2Z_{i min 1} = 2(150+150+410) =2*710 mm

2Z_{i min 2} = 2(50+50+24.6) = 2*124.6 mm
2Z_{i min 3} = 2(30+30+16.4) = 2*76.4 mm

d _{hs 2} = 23.008+0.153 = 23.161 mm

d _{hs 1} = 23.161+0.249 = 23.41 mm
d _{hs 3} = 23.41+1.42 = 24.83 mm

d _{max 3} = 23.008+0.013 = 23.021 mm

d _{max 2} = 23.161+0.033 = 23.194 mm
d _{max 1} = 23.41+0.13 = 23.54 mm
d _{max z} = 24.83+1.3 = 26.13 mm

= 23.194-23.021 = 0.173 mm
= 23.54-23.194 = 0.346 mm

= 26.13-23.54 = 2590 mm

= 23.161-23.008 = 0.153 mm

= 23.41-23.161 = 0.249 mm

= 24.83-23.41 = 1.42 mm

Umumiy qo’yimlar

2 Z_{u min} = 153+249+1420 = 1822 mkm
2 Z_{u max} = 173+346+2590 = 3109 mkm
Z_{u nom} = Z_{u min} + Q_z + Q_d
Q_z = 500 Q_d = 20
Z_{u nom} = 1822+500-20 = 2302 mkm = 2.302 mm
Bajarilgan hisoblarni to’g’riligini tekshiramiz
- = 173 – 153 = 20 mkm
T₂ – T₃ = 33 -13 = 20 mkm

- = 346 – 249 = 97 mkm
T₂ – T₁ = 130 -33 = 97 mkm

- = 2590 – 1420 = 1170 mkm
T_z – T₁ = 1300 -130 = 1170 mkm

23m6sirtiga ishlov berishdagi texnologik o’tishlar.	Qo’yim elementlari, mkm			Hiso-biy qo’yim, mkm	Hisobiy o’lcham ,mkm	Dopusk T, mkm	Chekli O’lchamlar, mm		Qo’yim-larning chegaraviy qiymatlari
	Rz	H
Zagotovka	150	150	410		24.83	1300	24.83	26.13
Qora yo’nish	50	50	24.6	2*710	23.41	130	23.41	23.54		1420	2590
Toza yo’nish	30	30	16.4	2*124.6	23.161	33	23.161	23.194		249	346
Nafis yo’nish	3			2*76.4	23.008	13	23.008	23.021		153	173

Val detalining ishlov beriladigan sirtlari uchun qo’yimlar va dopusklar.

Sirt o’lchamlari, mm	Qo’yim , mkm		Dopusk
	Jadvaliy	hisobiy
320	2.2		+2.4 -1.2
12x24
18x18			+1.3
24x18	2*0.65		-0.7
13x170
x50	2*2.5
x 18	2*2.5
x 18		2*0.6 2*1.55

Zagotovka max o’lchami 26,13 mm
zagotovka nominal o’lchami 25,31 mm
Zagotovka min o’lchami 24,83mm
Zagotovka dopuski -1300mkm
Dastlabki yo’nishda max o’lcham 23,54mm
Dastlabki yo’nishda min o’lcham23,41mm
Dastlabki yo’nish dopuski -130mkm
Toza yo’nishda max o’lcham23,194mm
Toza yo’nishda min o’lcham23,161mm

Toza yo’nish dopuski -33mkm
Nafis yo’nishda max o’lcham23,021 mm
Nafis yo’nishda min o’lcham 23,008mm

Nafis yo’nish dopuski -13mkm

=2590mkm
=1420mkm
=346mkm
=249mkm
=173mkm
=153mkm

7.Kesish ma’romlarini belgilash va hisoblash.
Kesish ma’romlarini belgilashda ishlov berish turi va xarakteri, kesish asbobi o’lchamlari va uning kesuvchi qismi materiali, zagotovka materiali va holati, jihoz turi va holati hisobga olinadi. Kesish ma’romlari odatda quyidagi tartibda belgilanadi.
Kesish chuqurligi t: qora ishlov berishda imkon qadar max t qiymati belgilanadi.
Surish s: qora ishlov berishda dastgoh-moslama-kesish asbobi detal tizimi bikrligi va mustahkamligi, dastgoh yuritkichi quvvati, qattiq qotishmali plastinka mustahkamligi va boshqa cheklovchi omillarni hisobga olib, imkon qadar max s surish qiymati tanlanadi.
Kesish tezligi v har bir ishlov berish turi uchun jadvallar bo’yicha aniqlanadi.

23m6x18 mm tashqi aylanish sirti
Qora yo’nish
t=0,71mm s=0,6mm/ayl T=30min
= * * =Kg( ) =1,23 =1 =0,9 =610 MPa =Kg=1
= * * =1*1,23*0,9= 1,107
= = ;
= 3172 ayl/min;
2500 deb qabul qilamiz .
= = = 195 m/min
Toza yo’nish
t=0,125 mm; S=0,25 mm/ayl; T=30 min.
C=350; x=0,15; y=0,2; m=0,35.
= * * =1,107
= = ;
= = 5920 ayl/min;
3000 ayl/min;
= = = 382 m/min.
Nafis yo’nish
t=0,076 mm; S=0,12 mm/ayl; T=30 min.
C=420; x=0,15; y=0,2; m=0,2.
= * * =1,107
= = ;
= = 7245 ayl/min;
3200 ayl/min;
= = = 232 m/min.
Chap va o’ng torets markaz uyasi uchun
t=2,2 mm; S=1,2mm/ayl; T=60 min.
=1 = 0,75 =1,2
;
1940 ayl/min;
1904 ayl/min;
=132 m/min.

x 24 mm Tokarlik
Qora yo’nish
t=0,65mm;. S=0,3mm/ayl; T=60 min.
=0,75 = 1,55 =1,05
= ;
= = 4856 ayl/min;
3300 ayl/min;
= = =124,4 m/min.

x 50 mm Frezalash
Qora frezalash
t=2,5mm; S=0,2mm/ayl; T=60 min.
=0,65 = 1,55 =1,05
= ;
= = 619 ayl/min;
580 ayl/min;
= = = 45,5 m/min.

x 18 mm Tokarlik
Qora yo’nish
t=0,65 mm; S=0,3 mm/ayl; T=60 min.
=0,75 =1,55 =1,05
= ;
= = 2919 ayl/min;
2500 ayl/min;
= = = 141 m/min.

x 18 mm Tokarlik
Qora yo’nish
t=0,65 mm; S=0,6 mm/ayl; T=60 min.
=0,75 =1,55 =1,05
= ;
= =2030 ayl/min;
1750 ayl/min;
= = = 132 m/min.

x 18 mm Frezalash
Qora frezalash
S=0,2mm/ayl; T=60 min; t=2,5 mm
=0,65 = 1,55 =1,05
= ;
= = 520 ayl/min;
485 ayl/min;
= = = 46 m/min

x 170 mm Tokarlik
Qora yo’nish
t=0,65mm; S=0,3 mm/ayl; T=60 min.
=0,75 =1,55 =1,05
= ;
= = 4483 ayl/min;
3350 ayl/min;
= = = 136,7 m/min