【正文】
系統(tǒng)自動(dòng)化與當(dāng)代大多數(shù)企業(yè)的實(shí)際不相容。當(dāng)代社會(huì)還沒有 在科學(xué)技術(shù)、物質(zhì)和人員方面準(zhǔn)備好實(shí)現(xiàn)這一自動(dòng)化的條件,硬要這么做只會(huì)事倍功半。這種情況對(duì)于離散生產(chǎn)方式的機(jī)械制造業(yè)也不例外,難度會(huì)更大些。 80 年代國(guó)際上出現(xiàn)了開始采用計(jì)算機(jī)集成制造系統(tǒng) CIMS(Computer Integrated Manufacturing),柔性自動(dòng)化生產(chǎn)模式也有這種情況。初期 準(zhǔn)備 以信息集成為重點(diǎn),以較高的自動(dòng)化程度為特征,但在實(shí)現(xiàn)過(guò)程中遇到了困難。鑒于實(shí)現(xiàn)計(jì)算機(jī)集成制造系統(tǒng)的全盤自動(dòng)化所需的巨額投入(一個(gè)全盤自動(dòng)化工廠耗資數(shù)百億美元,柔性制造系統(tǒng)一般價(jià)格為 600~ 2500 萬(wàn)美元) ,所承擔(dān)的巨大風(fēng)險(xiǎn),加之技術(shù)上的難度與可靠性等問(wèn)題,世界工業(yè)發(fā)達(dá)國(guó)家已開始 “ 碰壁轉(zhuǎn)產(chǎn) ” ,轉(zhuǎn)而注重信息集成的效果,追求低成本自動(dòng)化 LCA(Low Cost Automation)的企業(yè)組織結(jié)構(gòu)和運(yùn)行方式。 組合機(jī)床未來(lái)的發(fā)展將更多的采用調(diào)速電動(dòng)機(jī)和滾珠絲杠等傳動(dòng),以簡(jiǎn)化結(jié)構(gòu)、縮短生產(chǎn)節(jié)拍;采用數(shù)字控制系統(tǒng)和主軸箱、夾具自動(dòng)更換系統(tǒng),以提高工藝可調(diào)性;以及納入柔性制造系 統(tǒng)和 資料介紹, 將成為其 最顯著的特點(diǎn)。 附件 2:外文原文 (復(fù)印件) Multipurpose aggregate machinetool time Timothy and Jacobs, Denis39。 A receives then then, outstanding Philip . Michigan university Summary:The aggregate machinetool machining center may cause the demand which the processing manufacturing industry adapts changes unceasingly, uses the pool of labor power effectively, and has the petitive power in global scale39。s market. Key word: Make the lathe up Regarding the multipurpose aggregate machinetools, in the industrial field has many names to describe it, like “the multitasking installment”, “the multipurpose engine beds”, “the multiprocedure production system” and so on, it may be called the processing domain truly the nova, may reduce the cost, the simplified disposition, and has maintained in the US territory produces. In the past only then used the duty which many machine operations could plete, now may concentrate to an engine bed on processes pletes. As a result of market demand39。s unceasing change, the product life cycle is reducing unceasingly, today39。s market more intense demand multitasking installment concept. Carries out the fine profit management when the entire production environment, pared to having not concentrated the ponents processing to a machine on pletes a finer profit. Some tradition39。s manufacturing industry manufacturer thought that the multipurpose aggregate machinetools are too plex, very difficult to find the appropriate operators also the difficult problem innovates on the spot on the insufficiency for the metal working basic principle and in the Production workshop related new engine bed use solution aspect training. Intuition type technical control The equipment use “carries off the quantity of heat” the type design, has different material which the lathe bed, the steeliness straight line rolling guide, on the steeliness revolving tool box saddle, the equipment uses, all these bine make an engine bed together. These with the thermal conductivity, the volume expansion are related. All different size39。s thing can by the different speed growth. As a result of this reason, needs to make the hot friendly engine bed, with the aim of knowing gives off heat the weak point in where, can pensate through the reasonable engine bed design. The part is the entire journey movement. The engine bed glide produces rubs and transform hotly. The machining produces the hot filings fall to the different place, the refrigerant can mix in the entire process in which. Will present the different temperature province continually on the cutting tool, will therefore also have many things to have the influence to the thermostability. The cutting tool technology turned the multipurpose aggregate machinetools has had the milling and cutting power “the versatile machine”. According to the material introduced that the most remarkable characteristic is in these engine bed whole has the intuition. The anticollision preservation technology