資源描述：
《基于CMM復(fù)雜曲面測(cè)量的采樣方法及測(cè)頭半徑補(bǔ)償研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、中南大學(xué)碩士學(xué)位論文基于CMM復(fù)雜曲面測(cè)量的采樣方法及測(cè)頭半徑補(bǔ)償研究姓名：廖菲申請(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：曾韜20090501插值的采樣方法和基于四點(diǎn)共球理論的測(cè)頭半徑補(bǔ)償方法實(shí)現(xiàn)了對(duì)自由曲面的測(cè)量?jī)?yōu)化，滿足了使用要求，有一定的實(shí)際應(yīng)用價(jià)值。關(guān)鍵詞：三坐標(biāo)測(cè)量機(jī)，測(cè)量規(guī)劃，采樣方法，測(cè)頭半徑補(bǔ)償ABSTRACTThemeasuringproblemofcomplexsamplesexistswidelyinthefieldofautomobilemanufactureandmolding．Itisdifficultt
2、omeasurepartswithhighprecisioneffectivelyandgetageneraldetectionmethodanddataprocessingtechnology．Fortheexistingmeasuringtechniquehascertainlimitsandshortages，thisthesismainlyperformstheresearchofmeasurementplanningofcurvedsurfaceandoptimizationofthemeasuringpath．Thegasolin
3、eshellismeasuredbyusingGLOBALSTATUS575movingbridgetypeCMM(coordinatemeasuringmachine)ofHexagonandoptimizingofthemeasuringpathandcompensatingoftheproberadiusareinvestigatedsubsequently．Themainworksandresultsare-"1．Thehistoryofthemeasuringtechnologiesoffree—formsurfaceissurve
4、yedinthefirstpartofthisthesis．Theshortcomingsofthepresentmeasuringtechnologies，suchasdistributingpoints，overmanymeasuringpointsandcompensatingprecisionrapidly,areanalyzed．2．Thecubicsplinepredictionmethodisproposedbasedonthecomparingwiththepresentedconventionalsamplingmethod
5、s．AnanimateexampleisillustratedsubsequentlyandthepredictionmethodisprovedtobevalidinsimulationofMatlab．3．Basedontheanalysisofconventionalsamplingmethods，a，cubicsplinepredictionmethodbasedonthespecificpropertiesofcurvedsurfaceisdeveloped．Throughcomparingthepredictionaccuracy
6、andcomputationofcubicsplinepredictionmethodandpredictionmethod，theformerhasbeenprovedtoimprovethemeasurementefficiencyandaccuracy．4．Theexpriementofthemeasuringplanningispreformed．ThecloudpointisusedtoreconstructbyImageware．5．Themethodbasedon“four-pointbuildasphere’’theoryis
7、proposedbasedonpresenttwo．dimensionalcompensationandthree—dimensionalcompensationmethods．1116·Thetwocompensatingmethods，micro．spherecompensatingandsphnecompensatingmethodareusedtoanalyzethedatafromthegasolineshellexperiment．Theresultsshowthattheerrorsbymicro。spherecompensat
8、ingmethodiSfarlowerthanthat’Sobtainedbyusingsplinecompensatingmethod，andthemainlyr
