文档介绍：该【机械制造装备课程设计--普通车床主轴箱部件设计 】是由【luciferios04】上传分享，文档一共【49】页，该文档可以免费在线阅读，需要了解更多关于【机械制造装备课程设计--普通车床主轴箱部件设计 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备设计课程设计
设计题目:一般车床主轴箱部件设计
起止日期:2011年11月26日至2011年12月13日
同学姓名
张文文
班级
机制七班
学号
201033210
成果
指导老师(签字)
机械工程学院
2013年1月14日
名目
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
·····························································4
·······································································6
···································································6
···················································6
操作性能要求···························································7
·························································7
·························································7
·························································7
·····························································8
··························································8
、结构网的选择·················································8
5确定变速组及各变速组中变速副的数目································8
5变速式的拟定······················································9
5结构式的拟定······················································9
5结构网的拟定······················································9
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
5结构式的拟定·····················································10
5结构式的拟定·····················································10
5确定各变速组变速副齿数···········································11
5绘制变速系统图···················································13
··································································13
、技术要求和方案··········································13
·························································14
(输入轴)的设计······················································14
·····························································14
···························································15
···························································16
6各部分尺寸的选择·················································16
6主轴材料和热处理·················································16
6主轴轴承·························································17
6主轴与齿轮的连接·········································
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
········18
6润滑与密封······················································18
6其他问题·························································18
······························································18
·····························································18
·······················································21
7确定各轴转速·····················································21
7传动轴直径的估算:确定各轴最小直径································22
7键的选择·························································23
···························································23
7传动轴的校核·····················································23
7键的校核·························································24
···········································24
7齿轮模数的确定···················································24
7齿宽的确定·······················································28
7齿轮结构的设计········································
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
···········29
···························································30
·············································31
···························································33
7校核a变速组齿轮·················································33
7校核b变速组齿轮·················································35
7校核c变速组齿轮·················································36
·······················································37
7各轴轴承的选用···················································37
7各轴轴承的校核···················································37
······························································39
·····················································39
8外径尺寸D·······················································39
8主轴孔径d·······················································39
8主轴悬伸量a·····················································40
8支撑跨距
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
L·······················································40
8主轴最佳跨距L0的确定············································41
···························································43
8主轴前支撑转角的验算·············································44
8主轴前端位移的验算···············································45
························································47
湖南工业高校
课程设计任务书
2011—2012学年第一学期
机械工程学院(系、部)机械设计制造及自动化专业机设081班级
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
课程名称:《机械制造装备设计》
设计题目:
起止日期:自2011年11月26日至2011年12月13日共2周
内
容
及
任
务
一、设计任务:
1、车床最大加工直径为250mm.
2、主要技术参数:
主电机功率P(kw)
主电机转速n电(r·min-1)
Nmax(r·min-1)
Nmin(r·min-1)
公比Ψ
4
1450
1400
63
加工工件材料为钢材;
***为硬质合金***;
二、设计工作量
运动计算:依据给定的转速确定主传动的机构图、转速图、传统系统图、计算齿轮齿数;
动力计算:选择电动机型号,对主要零件(如带、齿轮、主轴、传动轴、轴承等)进行计算(初算和验算);
编写设计计算说明书一份;
绘制下列图纸:
①机床主传动系统图(计算说明书中);
②主轴箱部件开放图及主要剖面图;
③主轴零件图。
设计说明书及图纸必需为计算机输出稿;
上交作业应包括电子稿以及打印稿,设计说明书文件格式为word2003版本,平面图纸文件格式为autocad2007或以下版本,3D图为step文件格式(图纸要求包括原始零件模型数据)。
*3D图可依据同学个体状况选择。
进度支配
起止日期
工作内容
2011--
参考文献,画图
任务书的编写
任务书、图纸的整理排版
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
主要参考资料
《机械制造装备设计》     冯辛安等著  ***出版社
《机械制造装备设计课程设计》     陈立德编  高等教育出版社
《机械制造装备设计》     陈立德编  高等教育出版社
《现代有用机床设计手册》(上下册)***出版社
《金属切削机床设计》  戴曙著      ***出版社
 
指导老师(签字):姚建民2011年11月26日
系(教研室)主任(签字):年月日
摘要
一般中型车床主轴箱设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
一般中型车床主轴箱设计,主要包括三方面的设计,即:依据设计题目所给定的机床用途、规格、主轴极限转速、转速数列公比或级数,确定其他有关运动参数,选定主轴各级转速值;通过分析比较,选择传动方案;拟定结构式或结构网,拟定转速图;确定齿轮齿数及带轮直径;绘制传动系统图。其次,依据机床类型和电动机功率,确定主轴及各传动件的计算转速,初定传动轴直径、齿轮模数,确定传动带型号及根数,摩擦片尺寸及数目;装配草图完成后要验算传动件(传动轴、主轴、齿轮、滚动轴承)的刚度、强度或寿命。最终,完成运动设计和动力设计后,要将主传动方案“结构化”,设计主轴变速箱装配图及零件图,侧重进行传动轴组件、主轴组件、变速机构、箱体、润滑与密封、传动轴及滑移齿轮零件的设计。
【关键词】车床、主轴箱、变速系统、主轴组件。
机床技术参数有主参数和基本参数,他们是运动传动和结构设计的依据,影响到机床是否满足所需要的基本功能要求,参数拟定就是机床性能设计。主参数是直接反映机床的加工力量、打算和影响其他基本参数的依据,如车床的最大加工直径,一般在设计题目中给定,基本参数是一些加工件尺寸、机床结构、运动和动力特性有关的参数,可归纳为尺寸参数、运动参数和动力参数。
通用车床工艺范围广,所加工的工件外形、尺寸和材料各不相同,有粗加工又有精加工;用硬质合金***又用高速钢***。因此,必需对所设计的机床工艺范围和使用状况做全面的调研和统计,依据某些典型工艺和加工对象,兼顾其他的可能工艺加工的要求,拟定机床技术参数,拟定参数时,要考虑机床进展趋势和同国内外同类机床的对比,使拟定的参数最大限度地适应各种不同的工艺要求和达到机床加工力量下经济合理。
机床主传动系因机床的类型、性能、规格和尺寸等因素的不同,应满足的要求也不一样。设计机床主传动系时最基本的原则就是以最经济、合理的方式满足既定的要求。在设计时应结合具体机床进行具体分析,一般应满足的基本要求有:满足机床使用性能要求。首先应满足机床的运动特性,如机床主轴油足够的转速范围和转速级数;满足机床传递动力的要求。主电动机和传动机构能供应足够的功率和转矩,具有较高的传动效率;满足机床工作性能要求。主传动中全部零部件有足够的刚度、精度和抗震性,热变形特性稳定;满足产品的经济性要求。传动链尽可能简短,零件数目要少,以便节省材料,降低成本。
一般机床的规格和类型有系列型号作为设计时应当遵照的基础。因此,对这些基本学问和资料作些简要介绍。本次设计的是一般型车床主轴变速箱。主要用于加工回转体。
(规格尺寸)和基本参数表
工件最大回转直径
(mm)
最高转速
()
最低转速
()
电机功率
P(kW)
公比
转速级数Z
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
机械制造装备课程设计--一般车床主轴箱部件设计
320
1120
25
12
1)具有皮带轮卸荷装置
2)手动操纵双向片式摩擦离合器实现主轴的正反转及停止运动要求
3)主轴的变速由变速手柄完成
依据【1】公式(3-2)由于已知,
∴Z=+1
也即Z=12
由于==,首先找到最小极限转速,再每跳过5个数的数列25,,50,71,100,140,200,280,400,560,800,1120.
合理的确定电机功率P,使机床既能充分发挥其使用性能,满足生产需要,又不致使电机经常轻载而降低功率因素。
现在以常见的中碳钢为工件材料,取45号钢,正火处理,车削外圆,表面粗糙度=。接受车***,可转位外圆车刀,刀杆尺寸:16mm25mm。***几何参数:=15,=6,=75,=15,=0,=-10,b=,r=1mm。
现以确定粗车是的切削用量为设计:
确定背吃刀量和进给量f,依据【2】表8-50,取4mm。
确定切削速度,参【2】表8-57,取V。
机床功率的计算,
主切削力的计算依据【2】-表8-59和表8-60,主切削力的计算公式及有关参数:
F
2704
=3242(N)
切削功率的计算
==3242=(kW)