- 1、本文档共1页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
4.1Calculationinterfacesandflankgeneration
Forthegenerationofbevelgearflankgeometr,ythebasicgearcuttingmodelisprepared
inaformwellsuitedforadaptationtotheknownbevelgearmachines.Figure3illustratestheconfigurationofthecoordinatesystemsofthebevelgearcuttingmodelforsimulationofGleasonmachines.
Inordertoassureauser-friendlydatatransferbetweendesignprogramandbevelgearcalculationprogram,astandardizedinterfacewasdevelopedwhich,inadditiontotherequiredorganizationcodes.consistssubstantiallyofthecoordinatesandinterrelationshipsofthefictitiousbasicgearmachine.
Forflankgeneration,theworkgearisdescribedinSystemXl.Y1.Z1(Figure3);SystemX8,Y8,Z8carriesthecutterheadwhich.inturn,canrotatearoundthegeneratingcradleaxis(SystemX4,Y4.Z4).Thedisplacingability(therotationalabilityofthecoordinatesystems)enablefirstlythestaticsettingofthis“gearmachine”accordingtothemachinesettingsheets,andsecondly,themovementsduringcutting.Inadditiontoindexing,generating,andcuttermovements,nonlinearextramotions(helicalmotions)arealsopossibledependingonthegeneratingmotionorcutterheadrotation.
Ifonemovesthemachinekinematicsinthecomputerreconstructionawayfromthecutterheadinsmallsteps,sothatanaturalflankgriddevelopsintheworkgearaxisintersectionplane.Thecolumnsofthegridrepresenttheangularbladepositionsandthelinesofthegridrepresentthebladepoints.
Throughanappropriateselectionoftheblade-anglesettingsandthegeneratingpointsalongthecuttingedge,itispossibletodetermine,withnearlyanydesiredprecision,thecoordinatepointsoftheselectedflankgrid(whichisnormallynotidenticalwiththenaturalgrid)inasecondgeneratingphase(Figure4).Thefinalresultofthegeneratingprogramisaspatialnetworkofflankpoints,withflanknormals,whichdescribestheentiregenerate
文档评论(0)