【正文】
meters tall and it’s construction area is square meters, the structure form is frame graduation design consists of three parts which are the preparation of tender documents,construction drawing budget and the formulation of the list of design tasks are the preparation of tender documents,construction drawing budget and the formulation of the list of quantities,the core part and the primary work is he formulation of the list of the design process,based on ‘Construction engineering measurement and measurement’and ‘The quantities bill valuation with the rules’,according to the Liaoning Province construction engineering list valuation measures,after the teacher carefully in class teaching and individual answer questions,and through the use of datd access and network means,in the guidance of teacher to help plete the calculation of the words: tender documents , construction drawing budget, the list ofquantities.第五篇:數(shù)控畢業(yè)設(shè)計摘要X6臺階定位盤數(shù)控加工工藝設(shè)計摘 要數(shù)控加工是機(jī)械行業(yè)一門新的專業(yè),數(shù)控技術(shù)是數(shù)字程序控制數(shù)控機(jī)械實現(xiàn)自動工作的技術(shù)。它廣泛用于機(jī)械制造和自動化領(lǐng)域,較好地解決多品種、小批量和復(fù)雜零件加工以及生產(chǎn)過程自動化問題。隨著計算機(jī)、自動控制技術(shù)的飛速發(fā)展,數(shù)控技術(shù)已廣泛地應(yīng)用于數(shù)控機(jī)床、機(jī)器人以及各類機(jī)電一體化設(shè)備上。同時,社會經(jīng)濟(jì)的飛速發(fā)展,對數(shù)控裝置和數(shù)控機(jī)械要求在理論和應(yīng)用方面有迅速的發(fā)展和提高。隨著社會需求個性化、多樣化的發(fā)展,生產(chǎn)規(guī)模沿著小批量——大批量——多品種變批量的方向發(fā)展,以及以計算機(jī)為代表的高技術(shù)和現(xiàn)代化管理技術(shù)的引入,滲透與融合,不斷地改變著傳統(tǒng)制造技術(shù)的面貌和內(nèi)涵,從而形成了先進(jìn)制造技術(shù)。數(shù)控就是一種自動控制技術(shù),它所控制的一般是位置、角度、速度等機(jī)械量。數(shù)控機(jī)床,就是采用了數(shù)控技術(shù)的機(jī)床,它是一個裝有程序控制的機(jī)床,該系統(tǒng)能夠邏輯地處理具有使用號碼或其他符號編碼指令規(guī)定的程序。本篇論文是對X6號銑塊(包含凸臺、外輪廓、孔)的工藝設(shè)計,其中包括加工方法的選擇,加工順序的安排,毛坯的選擇,銑刀的類型及選用,切削用量的選擇,數(shù)控加工中數(shù)值計算等。工件采用的是HT150,刀具是硬質(zhì)合金鋼,在零件的加工過程中要注意切削用量的選擇正確,加工順序的安排等,有關(guān)工步工序的計算相對較復(fù)雜。本設(shè)計從數(shù)控加工前應(yīng)做的準(zhǔn)備開始到數(shù)控加工工藝分析、數(shù)控刀具及其選擇、工件裝夾方式與數(shù)控加工夾具的選擇、程序編制等內(nèi)容以及數(shù)控加工時應(yīng)注意的問題做了一一的說明。關(guān)鍵詞:數(shù)控機(jī)床; 工藝設(shè)計; 程序編制