注塑模自動(dòng)分模技術(shù)研究.pdf

1、同濟(jì)大學(xué)機(jī)械工程學(xué)院碩士學(xué)位論文注塑模自動(dòng)分模技術(shù)研究姓名：劉平平申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械制造及其自動(dòng)化指導(dǎo)教師：朱傳敏20090301AbstractABSTRACTWiththedevelopmentofnationaleconomyInjectionmouldhasbeenwidelyusedinmodernindustryandbecomeoneoftheimportantbasicindustriesIntheeyesof

2、moulddesignandmanufacturingengineering，improvingprecisionanddesignefficiencyandreducingthecosthavebecomethedevelopmenttargetofinjectionmoldSoautomaticmolddesignhasbeingpaidmoreandmoreattentioninmodemmouldindustrywillplay

3、animportantroleinreducingthecostandimprovingdesignefficiencyAtfirst，thebasicconceptofmoulddesignandtheresearchmeaningofautomaticmoulddesignisintroduced，andthecurrentresearchsituations，developmenttrendsandexistingobstacle

4、sarethoroughlysurveyed，theimportanceoftheautomaticpartingdesignintheinjectionmoulddesignisthoroughlyanalyzedThenamethodologyisproposedfortherecognitionandextractionofundercutsInthemethod，thelibraryoffeaturesisbuiltfirstb

5、asedonthedefinitionandtaxonomyofplasticmouldfeaturesAndthengraph—basedapproachisproposedtoidentifytheseplasticmouldfeaturesAfteralltheundercutfeaturesareextracted，themethodtoautomaticallydetermineoptimalpartingdirectionb

6、asedonvisibilitymapisproposedInthemethod，thevariousinfluencefactorsofpartingdirectionarethoroughlyanalyzed，optimalpartingdirectionisfinallychosenbytargetfunctionAfterpartingdirectionisdeterminedandundercutfeaturesareextr

7、acted，amethodologytogeneratethepartinglinesispresentedInthemethod，themoldingsurfacesareclassifiedintofourmaingroups(visible，invisible，transitional，stride)accordingtothepartingdirectionandtheirtopologicalrelationships，the

8、nfortransitionalandstridcfacesareclassifiedsecondlybasedonsomerules，finallythemoldingsurfacesareclassifiedintothreemaingroupsExcludingsomefacesforpartinglinenohelpbaseontheaboveclassifiedfacesAndthenforvisibleandinvisibl