资源描述:
《《金工实习》第章 数控加工基础》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、management,includingonallofficialvehicles,security,deployment,use,entrystatistics,reasonableparking,maintenance,repair,testingandsocialemployment,vehicles;19,isresponsibleforthecostsrelatedtothecompany'sinitialevaluation;20,isresponsibleforcompany-wideemployeetimeandattendance,poormanagementappro
2、achesandspecificworkonduty;...Classofbusinessinformation(includingchangesinpoliciesandregulations,nationalpoliciesandotherbuildingmaterialsindustry)collection,maintenanceofelectronicequipment,networkmaintenance,andanalysisofmarketinformationandreporting;26,isresponsibleforarrangingtheManager'sdai
3、lyagenda;27,responsibleforcoordinatingthesocialrelationsofthecompanyandthesurroundingvillages;28,thecompanyresponsibleforalltheguestregister,informing,guidingandotherservices,isresponsiblefortheguest,visitorreceptionandaccommodationarrangements;29,responsibleforproofofcompany-wide;30,thecompanyre
4、sponsibleforthe"thirdgrade"warehouseandmaterialmanagement,includingstorageprocedures,materialsdistribution,inventoryandmaterialsinventorystoragenoticeafterusingtheDepartment'swork;31,isresponsibleforthemanagementofhealthdevelopmentandcompany-wideafforestationandbeautification,sanitationmanagement
5、;32,inchargeofhumanresourcesmanagement,includingrecruitment,employment,obtainment,classification,salary,promotion,transfer,dismissal,contract(includingthelabourcontractandtheexpatriatestafftrainingindraftingandsigningoftheagreement),第13章数控加工基础13.1数控机床的组成、基本加工原理、分类13.1.1数控机床的组成现代数控机床一般由控制介质、数控装置、伺
6、服系统、位置测量与反馈系统、辅助控制单元和机床主机组成,如图13-1所示为各组成部分的逻辑结构简图: 图13-1数控机床逻辑结构示意图13.1.2数控机床的基本加工原理数控机床加工零件时,先将加工过程所需的各种操作(如主轴变速、松夹工件、进刀与退刀、开车与停车、选择刀具、供给冷却液等)和步骤以及与工件之间的相对位移等都用数字化的代码表示,并按工艺先后顺序组织成“NC程序”,通过介质(如软盘、电缆等)或手工将其输入到机床的NC存储单元中,NC装置对输入的程序、机床状态、刀具偏置等信息进行处理和运算,发出各种驱动指令来驱动机床的伺服系统或其他执行元件,使机床自动加工出尺寸和形状都符合预期结果
7、的零件。数控加工中数据转换过程如图13-2所示:图13-2数控加工中数据转换过程一、译码(解释)renewal,modification,cancellationandotherrelevantprocedureswork,andperiodicallyonthesituationofhumanresourcesanalysis;33,responsibleforthecompany'semployeesretirementfund