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当前位置:首页 > 机械/制造/汽车 > 制造加工工艺 > 数控《金属切削机床与刀具》复习题
她是大山的女儿,像一支燃烧的蜡烛,闪耀着灿烂的光辉,照亮了深山孩子的梦想,她和千千万万山村教师一道,努力实践着中国山村的教育梦businesstoorganize,guide,assist,participatorypre-loaninvestigation,providemarketingadviceandresponsibleformarketingadvice.ChapterIIIcontentandprocessafteracceptingtheborrower'sapplicationforthe14thperson,dominatedbyfieldinvestigationandoff-sitesurveysasasupplement,carryoutpre-loaninvestigationwork.Maincontentsareasfollows:(a)theborrowersurveys1.Borrowerforcorporatecustomers,investigatorsshouldinterviewbusiness,management,financeandotherrelatedpersonnel,fieldtripplaceofbusinessandproductionoperations,andaccordingtotheinformationprovidedbythecustomertoverifythebusinessmanagement,authenticityofthefinancialsituation,trade,etc.2.borrowingpeopleforsmallenterpriseof,surveycontentexceptreferencecompanyclasscustomeroutside,alsoshouldfocusconcernactualcontrolpeopleandthemainshareholderspersonalfundingletter,andpractitionersexperience,andmarriagestatus,andhealthstatus,softinformationandfamilyassets,andliabilitiesstatus;focussurveyverifiedenterpriseaccounttable,andbankaccountwater,andtaxinformationandhydropowerwage,spendinginformation,thenverifiedcompanyactualbusinessstatusandthefinancialstatus.3.theborrowerisanaturalperson,theinvestigationshouldfocusonborrowersandtheirfamilies,property,income,debt,credit...Investigatorsshouldfieldsurveys,confirmthemortgagesituation,bywayofassessment,inquiryfindsthevalueofthemortgage.Disagreeswiththedeterminationofvalue,shouldbesubmittedthroughotherevaluationAgency,thesupplementaryinvestigations,fieldsurveys,includingre-evaluationofvalue.1.topropertymortgageof,surveypeopleshouldfieldstudymortgagereal,andverifiedfollowinginformation:housingownershipcardbycontainsMinginformation(ownershippeople,andislocated,andfloor,,androom,,andarea,andtype,)《金属切削机床与刀具》复习题一、填空题(每题2分,共20分)1.刀具材料的种类很多,常用的金属材料有工具钢、高速钢、硬质合金;非金属材料有金刚石、立方氮化硼等。2.刀具的几何角度中,常用的角度有前角、后角、主偏角、副偏角、刃倾角和副后角六个。3.切削用量要素包括背吃刀量、进给量、切削速度三个。4.由于工件材料和切削条件的不同,所以切屑类型有带状切屑、节状切屑、粒状切屑和崩碎状切屑四种。5.刀具的磨损有正常磨损的非正常磨损两种。其中正常磨损有前刀面磨损、后刀面磨损和前后刀面同时磨损三种。6.所有机床都必须通过刀具和工件之间的相对运动来形成一定形状,尺寸和质量的表面。7.加工脆性材料时,刀具切削力集中在刀尖附近,宜取较小的前角和较小的后角。8.刀具切削部分材料的性能,必须具有高的硬度、良好的强度和韧性、良好的耐磨性和良好的工艺性及经济性。9.防止积屑瘤形成,切削速度可采用高速或低速。10.写出下列材料的常用牌号:碳素工具钢T8A、T10A、T12A;合金工具钢9SiCr、CrWMn;高速工具钢W18Cr4V、W6Mo5Cr4V2。11.楔角(前刀面)与(后刀面)的夹角12.YT类硬质合金的主要化学成分是Co、(TiC)和(WC),其中(TiC)含量越多,硬质合金硬度越高,耐热性越好,但脆性越大。13.按照机床工艺范围宽窄,可分为通用机床(万能)、专门化机床和专用机床三类。14.在金属切削过程中,在(中)速度加(塑性)材料时易产生积屑瘤,它将对切削过程带来一定的影响,故在(精)加工时应尽量避免。15.外圆车削时,在刀具6个标注角度中,对切削温度影响较大的角度是(γo)和Kr。16.金属切削机床是一种用切削方法加工金属零件的工作机械,它是制造机器的机器,因此又称为工作母机或工作机。17.常用的切削液有水溶液、(乳化液)和(切削油)三大类。采用硬质合金刀具时,由于(刀具红硬性),故一般不使用切削液。18.使用可转位车刀生产率较高,原因是由于它减少了(更换)及(刃磨)所需的辅助时间,故特别适合于自动化生产。19.麻花钻切削性能最差的部位是在(横刃)处;钻头最易磨损部位是在(刀尖)处。钻削加工时轴向力主要是由(横刃)刃产生。20.主剖面(正交平面)标注角度参考系中三个坐标平面是指(基面)、(正交平面)和(主切削平面),它们之间关系为(相互垂直)。21.一般在精加工时,对加工表面质量要求高时,刀尖圆弧半径宜取较(大)。22.磨平面和磨内孔时,应比磨外圆时选用粒度较(大),硬度较(小),组织较(大)的砂轮。23.在加工细长轴类零件时,刀具的刃倾角λs常取为(正值)值,这是因为λs使(背吃刀力减小)。24.扩孔钻既可用作孔的最后加工,也可用作铰孔前的预加工。她是大山的女儿,像一支燃烧的蜡烛,闪耀着灿烂的光辉,照亮了深山孩子的梦想,她和千千万万山村教师一道,努力实践着中国山村的教育梦businesstoorganize,guide,assist,participatorypre-loaninvestigation,providemarketingadviceandresponsibleformarketingadvice.ChapterIIIcontentandprocessafteracceptingtheborrower'sapplicationforthe14thperson,dominatedbyfieldinvestigationandoff-sitesurveysasasupplement,carryoutpre-loaninvestigationwork.Maincontentsareasfollows:(a)theborrowersurveys1.Borrowerforcorporatecustomers,investigatorsshouldinterviewbusiness,management,financeandotherrelatedpersonnel,fieldtripplaceofbusinessandproductionoperations,andaccordingtotheinformationprovidedbythecustomertoverifythebusinessmanagement,authenticityofthefinancialsituation,trade,etc.2.borrowingpeopleforsmallenterpriseof,surveycontentexceptreferencecompanyclasscustomeroutside,alsoshouldfocusconcernactualcontrolpeopleandthemainshareholderspersonalfundingletter,andpractitionersexperience,andmarriagestatus,andhealthstatus,softinformationandfamilyassets,andliabilitiesstatus;focussurveyverifiedenterpriseaccounttable,andbankaccountwater,andtaxinformationandhydropowerwage,spendinginformation,thenverifiedcompanyactualbusinessstatusandthefinancialstatus.3.theborrowerisanaturalperson,theinvestigationshouldfocusonborrowersandtheirfamilies,property,income,debt,credit...Investigatorsshouldfieldsurveys,confirmthemortgagesituation,bywayofassessment,inquiryfindsthevalueofthemortgage.Disagreeswiththedeterminationofvalue,shouldbesubmittedthroughotherevaluationAgency,thesupplementaryinvestigations,fieldsurveys,includingre-evaluationofvalue.1.topropertymortgageof,surveypeopleshouldfieldstudymortgagereal,andverifiedfollowinginformation:housingownershipcardbycontainsMinginformation(ownershippeople,andislocated,andfloor,,androom,,andarea,andtype,)25.不同于普通的孔加工,深孔加工的主要问题有三,即:断屑和排屑、冷却和润滑以及导向。26.铣削加工时,铣刀绕其轴线转动是主运动。27.铣削时,切削厚度ac是指铣刀相邻刀齿主切削刃的运动轨迹间的垂直距离。28.尖齿成形铣刀用钝后重磨后刀面。29.蜗轮滚刀切削刃切削蜗轮时,模拟着工作蜗杆与蜗轮的啮合过程。二、判断题:(在题末括号内作记号:“√”表示对,“×”表示错)(每题1分,共20分)1.钨钴类硬质合金(YG)因其韧性、磨削性能和导热性好,主要用于加工脆性材料,有色金属及非金属。√2.刀具寿命的长短、切削效率的高低与刀具材料切削性能的优劣有关。√3.安装在刀架上的外圆车刀切削刃高于工件中心时,使切削时的前角增大,后角减小。√4.刀具磨钝标准VB表中,高速钢刀具的VB值均大于硬质合金刀具的VB值,所
本文标题:数控《金属切削机床与刀具》复习题
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