數(shù)控類外文文獻(xiàn)翻譯--模具型腔數(shù)控加工計算機輔助刀具選擇和研究-模具設(shè)計-wenkub
2023-05-19 01:19:57 本頁面
【正文】 deeply over the past 20 years, a lot of algorithms developed have already got application in mercial CAD/ CAM system. Most CAM systems can produce the cutter orbit automatically after users input relevant parameters at present. Comparatively speaking , it is still not ripe to regard quality , efficiency as the research of choosing the problem of cutter of optimizing the goal correctly, do not have mercial CAM system that can offer the preferred decision support tool of cutter at present, therefore it is difficult to realize the integrating automatically and organically of CAD/ CAM.. The cutter is chosen to usually include cutter type and cutter size. Generally speaking , suitable for one processing cutter of target for much kind , one cutter can finish different processing tasks, so it is easier to only consider meeting the cutter that basically processes the requirement and choose, especially to geometirc characteristics of model such as the hole , trough ,etc.. But in fact, it is mon for cutter to choose and sure optimization goal interrelate, for instance most heavy to cut efficiency , process time , minimum process cost , longest service life ,etc. at least, so the cutter is chosen it is a plicated optimization question. Such as mould type one of parts, because the geometirc form is plicated (usually include curved surface of freedom and island), influence geometry that cutter choose it restrains from to be can explicit to say among CAD model, need to design the corresponding algorithm to draw, therefore choose the cutter specification suitable and cutter association , it is not easy things by improving efficiency and quality processed in numerical control. Mould type generally with preparation method that numerical control mill, usually including rough machining, half finish machining , precise process of processing etc.. The principle of rough machining is to spare no effort to remove the surplus metal with high efficiency, therefore hope to choose the larger cutter, but the cutter is oversized, ma y cause the increase of the crude volume 。 Step 3:calculate its width。 steps7 : choose Xianxiao x depth than the smallest cutlery. fine cutlery choice Fine cutlery choice is the basic principle : cutlery parts surface radius smaller than the smallest size R curve radius r, the general admission R= (~) r. Its algorithm steps are as follows : Step 1 : from the smallest curve radius calculation model parts entities。前一問題在過去的20 年里得到了廣泛而深入地研究， 發(fā)展的許多算法已在商用 CAD/ CAM 系統(tǒng)中得到應(yīng)用。一般來說，適合一個加工對象的刀具通常有多種，一種刀具又可完成不同的加工任務(wù)，所以僅 考慮滿足基本加工要求的刀具選擇是較容易的，尤其對孔、槽等典型幾何特
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