【正文】
不會(huì)的的確覺(jué)得困難比較多,真是萬(wàn)事開(kāi)頭難,不知道如何入手。 經(jīng)過(guò)幾周的奮戰(zhàn)我的課程設(shè)計(jì)終于完成了。再將此轉(zhuǎn)速代入公式( 51),可求出該工序 的實(shí)際鉆削速度 v=n? d/1000=( 3)精鉸工步 1)背吃刀量的確定 取 pa =。 “先主后次”原則,先加工主要表面,后加工次要表面。 根據(jù)上述諸因素,可查表確定該鑄件的尺寸公差和機(jī)械技工余量,所得結(jié)果列于下表中。 蝸桿箱 是渦輪蝸桿傳動(dòng)的基礎(chǔ)件,因此應(yīng)具有足夠的剛度和強(qiáng)度,此外由于渦輪蝸桿機(jī) 構(gòu)是一個(gè)發(fā)熱大的傳動(dòng)機(jī)構(gòu),還應(yīng)要求箱體具備較好的散熱能力。除此之外,他們將挖掘隱含的動(dòng)力去學(xué)習(xí)機(jī)械自動(dòng)化及材料 科 學(xué)的本專業(yè)課程 . 遼寧工程技術(shù)大學(xué)課程設(shè)計(jì) III Abstract The design course of Manufacturing are the main contents of a point of order processing machinery and drilling holes for fixture design process. In the process of the des ign ,we Can make prehens ive use of machinery manufacturing technolo gy and other courses based on the basic theories and methods . In order to finish the design. We have to think about the method that make full use of what we have. Combination of design, the applic ation process can be skilled method of calculating the correct conduct of calculation, such as technic al parameters, cutting force, cutting power, cutting speed, positioning erro r, the clamp ing force, and so the curric ulum des ign, Students will learn theory and practice of bining production, resolved the issue of capacity issues and the initial training. In the course of three weeks of Manufacturing D es ign, students’ interest in mechanical engineering has been growing rap id ly. They enjoy every moment of the lecture. Bes ides, they will fo und large room for giving full p lay of my latent energy by studying the courses offered by departments of industrial automation and materials science 遼寧工程技術(shù)大學(xué)課程設(shè)計(jì) IV 目錄 箱的工藝性分析及生產(chǎn)類型的確定 ............ 1 蝸桿 箱的用途 ............................... 1 蝸桿 箱的技術(shù)要求 ........................... 1 審查 蝸桿 箱的工藝性 ......................... 2 確定蝸桿 箱的生產(chǎn)類型 ........................ 2 2 確定毛坯、繪制毛坯簡(jiǎn)圖 ...................... 3 選擇毛 坯 ................................... 3 確定毛坯的尺寸公差和機(jī)械加工余量 ............ 3 3 擬定蝸 桿 箱工藝路線 .......................... 5 定位基準(zhǔn)的選擇 ............................. 5 表面加工方法的確定 ......................... 5 加工階段的劃分 ............................. 6 工序的集中和分散 ........................... 6 工 序順序的安排 ............................. 7 確定工藝路線 ............................... 7 4.?60H7 的孔加工余量、工序尺寸和公差的確定 ...... 8 5.?60H7 的孔切削用量的計(jì)算 .................... 10 6. 加工 216。毛坯的拔模 斜度為 ?5 。該蝸桿 箱的生產(chǎn)類型為大量生產(chǎn),可以采用萬(wàn)能型機(jī)床配以專用工具、夾具,以提高生產(chǎn)率;而且運(yùn)用工序集中原則使工件的裝夾次數(shù)少,不但可縮短輔助時(shí)間,而且由于在一次裝夾中加工了許多加工表面,有利于保證各加工表面之間的相對(duì)位置精度要求。 2) 進(jìn) 給 量 的 確 定 由表 522, 選 取