DASTGOH MOSLAMASINI LOYIHALASHTIRISH. MAHKAMLASH KUCHINI HISOBLASH

Аннотация

При анализе детального строения его общего строения, затем классификация всех элементов и форм поверхностей, определение наличия сложных комбинированных поверхностей с учетом различия исполнительных и свободных поверхностей, а также основных и вспомогательных оснований, с точки зрения конструкции необходимо, насколько это возможно, определить функциональную роль каждой поверхности и элемента детали. КЛЮЧЕВЫЕ СЛОВА: Сила резания при сверлении, Диаметр сверления, Скорость резания при сверлении, показатели сорта, среднее значение стойкости, Фактические условия резания скорости резания, коэффициент, учитывающий глубину сверления. ANNOTATION: When analyzing the detailed structure of its general structure, then classifying all elements and forms of surfaces, determining the presence of complex combined surfaces taking into account the difference between executive and free surfaces, as well as main and auxiliary bases, from the point of view of design, it is necessary, as far as possible, to determine the functional role of each surface and element of the part. KEY WORDS: Cutting force during drilling, Drilling diameter, Cutting speed during drilling, grade indicators, average value of tool life, Actual cutting conditions of cutting speed, coefficient taking into account drilling depth. NATIJALAR: 1.Detal M momenti va o‘q kuchi R ta’siri ostida bo‘ladi R (1-rasm). kr O O 153 ACADEMIC RESEARCH IN MODERN SCIENCE International scientific-online conference Parmalash uchun kesish kuchini topamiz.Operatsiya RDB ega ega bo‘lgan SMV- 850 dastgohida bajariladi. Parmalash diametri D=18,2 mm Uzatib berish 𝑠 = 0,33 mm/ayl.; [3] bo‘yicha. 𝐶 𝐷𝑞 Parmalashdagi kesish tezligini aniqlaymiz m/daq: 𝑉 = 𝑣 ∙ 𝐾 𝑇𝑚𝑠𝑦 𝑣 М кр R o Р о 1-rasm. Moslamani hisoblash sxemasi bunda Sv – Sv = 9,8 ga teng bo‘lgan koeffitsient [3]; q, y ,m – darajalar ko‘rsatkichlari q=0,4; y=0,5; m=0,2 [3] bo‘yicha; T = 45 daq. – chidamlilikning o‘rtacha qiymati, [3]; Kesish tezligining amaldagi haqiqiy kesish sharoitlarini hisobga oluvchi umumiy tuzatish koeffitsienti: 𝐾 – materialning ishlov beruvchanlik koeffitsienti, [3]; 𝑚𝑣 𝐾 - asbob materialini hisobga oluvchi koeffitsient, [3]; i𝑣 𝐾 - parmalash chuqurligini hisobga oluvchi koeffitsient,[3] 𝑙𝑣 𝐾 = 𝐾 ∙ 𝐾 ∙ 𝐾 = 1,22∙ 1 ∙ 1 = 1,22 𝑣 𝑚𝑣 𝑢𝑣 𝑙𝑣 154 ACADEMIC RESEARCH IN MODERN SCIENCE International scientific-online conference 𝐶 𝐷𝑞 9,5 ∙ 18,250,4 𝑚 𝑣 𝑉 = ∙ 𝐾 = ∙ 1,22 = 31,27 𝑇𝑚𝑠𝑦 𝑣 450,2 ∙ 0,330,5 𝑚𝑖𝑛 Asbobnig aylanish chastotasini topamiz: 1000∙ 𝑉 1000∙ 31,27 𝑎𝑦𝑙 𝑛 = = = 545,2 𝜋 ∙ 𝐷 3,14 ∙ 18,25 𝑚𝑖𝑛 𝑎𝑦𝑙 Qabul qilamiz 𝑛 = 545 𝑚𝑖𝑛 Aylanish momentining hisob-kitobi: 𝑀 = 10 ∙ 𝐶 ∙ 𝐷𝑞 ∙ 𝑠𝑦 ∙ 𝐾 𝑘𝑟 𝑀 𝑝 𝜎 600 𝐾 = ( 𝐵 )0,75 = ( )0,75 = 0,85 𝑝 750 750 𝐶 = 0,0345; 𝑦 = 0,8; 𝐾 = 𝐾 = 0,85; [3] 𝑀 𝑝 𝑀𝑃 𝑀 = 10 ∙ 𝐶 ∙ 𝐷𝑞 ∙ 𝑠𝑦 ∙ 𝐾 = 10 ∙ 0,0345∙ 18,252 ∙ 0,330,8 ∙ 0,85 = 4854,6 𝑁 𝑘𝑟 𝑀 𝑝 O‘q kuchining hisob-kitobi: 𝑃 = 10 ∙ 𝐶 ∙ 𝐷𝑞 ∙ 𝑠𝑦 ∙ 𝐾 0 𝑃 𝑝 𝐶 = 68,𝑦 = 0,7,𝑞 = 1,𝐾 = 𝐾 = 0,85, [3] 𝑃 𝑝 𝑀𝑃 𝑃 = 10 ∙ 𝐶 ∙ 𝐷𝑞 ∙ 𝑠𝑦 ∙ 𝐾 = 10 ∙ 68 ∙ 18,25∙ 0,330,7 ∙ 0,85 = 4854,6 𝑁 0 𝑃 𝑝 Parmalashda (P ) o‘q kesish kuchi eng katta kuch hosil qilishidan kelib chiqib, o qiskich kuchini formula bilan aniqlaymiz, 𝑃 ∙ 𝑥 ∙ 𝑙 0 𝑊 = 𝐷 ∙ 𝐾 bunda o‘q kesish kuchi otib tashlash momentini (P xl) hosil qiladi,qiskich kuchi o W esa yelkada harakat qiladi va zagotovkaning D/2 otib tashlash momentiga qarshi harakat qiluvchi momentni hosil qiladi, va zagotovkani zaxira koeffitsienti K bilan ishonchli qotirilishini ta’minlaydi. Kuchning hisob-kitobi zaxira koeffitsientini K hisobga oladi, chunki zagotovkaga ishlov berishda kuch va kesish momentlari tebranishlari vujudga keladi. Umumiy holatda ushbu koeffitsientning kattaligi, ishlov berishning aniq sharoitiga qarab, 2…3,5 chegaralarida bo‘ladi. Kattalik 𝐾 = 𝐾 ∙ 𝐾 ∙ 𝐾 ∙ 𝐾 ∙ 𝐾 ∙ 𝐾 ∙ 𝐾 0 1 2 3 4 5 6 Ishonchlilik koeffitsienti K qiymati operatsiyalarni bajarishning aniq sharoitlari va zagotovkani mahkamlash usuliga bog‘liq ravishda differensial tarzda tanlanadi. Uning kattaligini koeffitsientlar bo‘linmasining ko‘paytmasi sifatida tasavvur qilish mumkin, va ularning har biri ma’lum bir omilning ta’sirini aks ettiradi: [4]. K =1,5 – kafolatlangan zaxira koeffitsienti; 0 K =1 – ishlov berilayotgan yuzada tasodifiy notekisliklar tufayli kesish kuchi 1 ortishini hisobga oladi; 155 ACADEMIC RESEARCH IN MODERN SCIENCE International scientific-online conference K =1,4 – o‘tmas bo‘lib qolish koeffitsienti; 2 K =1,2 – kesish kuchi ortishini hisobga oladi; 3 K =1 – zagotovkaga beriladigan qisish kuchining o‘zgarishini hisobga olish 4 koeffitsienti K =1 – qisish mexanizmi ergonomikasini tasniflaydi; 5 K =1 – zagotovkani orqaga burishga intiluvchi momentlarni tasniflaydi. 6 Hisoblashni amalga oshiramiz: 𝐾 = 𝐾 ∙ 𝐾 ∙ 𝐾 ∙ 𝐾 ∙ 𝐾 ∙ 𝐾 ∙ 𝐾 = 1,5 ∙ 1 ∙ 1,4 ∙ 1,2 ∙ 1 ∙ 1 ∙ 1 = 2,52 0 1 2 3 4 5 6 𝑃 ∙ 2 ∙ 𝑙 4854,6 ∙ 2 ∙ 0,03 0 𝑊 = = = 2064 𝑁 𝐷 ∙ 𝐾 0,056 ∙ 2,52 MUHOKAMA: 2.Qisish qurilmasining yuritmasini tanlash va hisoblab Kuch mexanizmi sifatida moslamaning asosi va pnevmotsilindr olinadi. Pnevmotsilindr tomonidan oshirib boriladigan qisqichning amald