【正文】 來變換所需要的進(jìn)給量。確定價值工程的對象，一般我們選擇對產(chǎn)品影響較大的零部件、設(shè)計年代已久或結(jié)構(gòu)復(fù)雜需要改進(jìn)或簡化結(jié)構(gòu)的零部件、體積較大或材料利用率 低的零部件、設(shè)計中間問題較多和改進(jìn)潛力大的部件。本設(shè)計利用價值工程原理從結(jié)構(gòu)，材料和工藝等方面對車床的 床頭箱 進(jìn)行改進(jìn)設(shè)計。雖然數(shù)控機(jī)床正在飛速發(fā)展，然而，普通 機(jī)床由于其具有價廉、質(zhì)優(yōu)、萬能而可靠的優(yōu)越性，在相當(dāng)長時間內(nèi)不可能被完全取代，還要與數(shù)控機(jī)床并駕齊驅(qū)。因此利用價值工程作為依據(jù)，合理的確定普通 床頭箱 的結(jié)構(gòu)并選擇合適的零部件進(jìn)行設(shè)計。所謂的價值工程是為了尋求功能與成本之間的合理匹配，使企業(yè)在生產(chǎn)經(jīng)營活動中能正確處理質(zhì)量和成本的關(guān)系，向社會提供更多的物美價廉的產(chǎn)品，給企業(yè)和社會帶來更多的經(jīng)濟(jì)效益。問題是如何挖掘潛力，改進(jìn)性能，提高其競爭能力。江南大學(xué) CG6125 床頭箱設(shè)計 說明書 院 系 ： 機(jī)械工程 學(xué)院 班 級 ： 姓 名 ： 學(xué) 號 ： 指導(dǎo)老師 ： 日期 ： 2021 年 9 月 16 日 1 摘要 當(dāng)前的機(jī)床制造業(yè)中。雖然數(shù)控機(jī)床正在飛速發(fā)展，然而，普通機(jī)床由于其具有價廉、質(zhì)優(yōu)、萬能而可靠的優(yōu)越性，在相當(dāng)長時間內(nèi)不可能被完全取代，還要與數(shù)控機(jī)床并駕齊驅(qū)。本設(shè)計利用價值工程原理從結(jié)構(gòu)，材料 和工藝等方面對車床的 床頭箱 進(jìn)行改進(jìn)設(shè)計。確定價值工程的對象，一般我們選擇對產(chǎn)品影響較大的零部件、設(shè)計年代已久或結(jié)構(gòu)復(fù)雜需要改進(jìn)或簡化結(jié)構(gòu)的零部件、體積較大或材料利用率低的零部件、設(shè)計中間問題較多和改進(jìn)潛力大的部件。 關(guān)鍵詞 ： 傳動效率 接觸疲勞強(qiáng)度 彎曲強(qiáng)度 耐磨性 2 Abstract CNC machine tools is the rapid development of the machine manufacturing industry, however, general machine tools because of its low cost, high quality, universal superiority in quite a long time can not be pletely replaced, but also with CNC machine tools neck and neck. The problem is how to explore the potential to improve performance, enhance its petitiveness. The design using value engineering principles to improve the design of the lathe headstock from the structure, materials and process. The socalled value engineering is to seek reasonable match between functionality and cost, so that enterprises can correctly handle the relationship between quality and cost in production and business activities, and to provide more affordable products to the munity, and bring to the enterprise and social more economic benefits. Determine the value of the object of the project generally affecting large parts, design era has long or plex structure need to improve or simplify the structure of the ponents we select products, bulky parts or materials, low utilization of design middle multi and improved potential for large parts. Therefore, based on the use of value engineering as a reasonable determination of the structure of the ordinary headstock design and select the appropriate ponents. Keywords: contact fatigue strength bending strength abrasion resistance transmission efficiency 3 目 錄 摘要 ................................................................................................................................. 1 Abstract.......................................................................................................................... 2 目 錄 ........................................................................................................................... 3 第一章 緒論 ............................................................................................................... 5 引言 ................................................................................................................... 5 國內(nèi)外研究現(xiàn)狀及發(fā)展趨勢 ................................................................................ 5 本課題主要研究內(nèi)容 .......................................................................................... 6 第二章 機(jī)械運動設(shè)計 ..................................................................................................... 7 ..................................................................................................... 7 ......................................................................................................... 7 .............................................................................................. 7 ........................................................................................... 8 ......................................................................................................... 8 動機(jī) ......................................................................................................... 9 ................................................................................................... 10 第三章 傳動件設(shè)計 ...................................................................................................... 11 ................................................................................................ 11 ......................................................................................... 13 主軸的計算轉(zhuǎn)速 ....................................................................................... 13 中間傳動軸的計算 .................................................................................... 13 ......................................................................................... 15 ......................................................................................... 18 第四章 強(qiáng)度校核 .......................................................................................................... 20 齒輪強(qiáng)度校核 .................................................................................................... 20 ． 1 校核 a傳動組齒輪 ................................................................................. 20 校核 b傳動組齒輪 ..................................................................