BENTLY 350022M

 

（3）Smith预估控制算法在介绍戴姆勒克莱斯勒汽车集团（以下简称戴-克集团）之前，有必要先了解创立于1925年的美国第三大汽车工业公司克莱斯勒汽车公司，其创始人名叫沃尔特·克莱斯勒。该公司在全世界许多国家设有子公司，是一个跨国汽车公司。公司总部设在美国底特律。凭借自己的技术和财力，他先后买下道奇、布立格和普利茅斯公司，逐渐发展成为美国第三大汽车公司。随着经营的扩大，克莱斯勒开始向海外扩张，先后在澳大利亚、法国、英国、巴西建厂和收买当地汽车公司股权，成为一个跨国汽车公司。目前拥有多款国际著名的轿车、载重车、轻型货车和商务车品牌。 由成千上万个零配件构成的汽车物流本身是一个非常复杂的系统，戴-克集团这种多品牌汽车战略决定了其要面对错综复杂的供应链的挑战，一体化物流解决方案（integrated logistics solution）成为其最有效的“武器”。 位于安大略的布雷马利的汽车总装厂是戴-克集团一体化物流解决方案的执行总部，被一些国际物流专家称之为北美大陆汽车物流登峰造极的榜样，在为汽车总装厂所提供的最理想的物流运作时，不仅拥有经营汽车制造业物流的各种优势， 而且最突出的是，通过一体化物流解决方案，把第三方物流供应商的经营与戴姆勒-克莱斯勒汽车集团的日常业务紧密结合起来。今天，只要接到来自戴-克集团布雷马利总装厂的一个电话，运作中的一体化物流解决方案立即发出指令，任何供需问题都可以得到圆满地解决。 据戴-克集团规划调度和管理部经理罗布-哈米尔顿介绍，所谓一体化物流解决方案是在1999年开始正式提出的，当时的想法非常简单，仅仅是为了these factors. Although most people prefer to use positive rake groove tools, in fact, tools with slightly negative rake groove can remove material with higher feed, and the feed rate per tooth can reach 0.5mm. However, it also means that the best stable state must be maintained, that is, the machine tool should be very strong and the clamping should be extremely stable. In addition to insert milling (round blade is preferred), the use of 90 main deflection angle should be avoided as far as possible, which usually helps to improve stability and obtain overall performance, especially when it is used under shallow cutting depth. In deep cavity milling,It is recommended to use a variable length tool through the tool shank instead of a single length tool in the whole process. Adjusting cutting parameters to overcome the vibration caused by reducing the feed rate per tooth is a traditional solution, but this method is not appropriate because it will have a disastrous impact on tool life and cutting performance. Indexable inserts require a certain amount of cutting edge rounding to increase cutting edge strength and obtain better coating adhesion. When milling titanium, the tool is required to work at least with a minimum feed rate - usually 0.1mm per