机械制造装备设计课程设计-普通车床的主轴箱部件设计

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1、课程设计说明书课程名称：机械制造装备设计设计题目：普通车床的主轴箱部件设计专业：机械设计及其自动化学生姓名:指导教师:目录一、运动设计············································11：确定变速范围R·················································12：确定转速级数····················································13：确定结构式······················································14

2、：绘制转速图······················································15：确定各变速组传动副齿数··········································26：绘制传动系统图··················································3二、动力计算··············································31：确定各轴转速····················································32：带传

3、动设计······················································43：各传动组齿轮模数的确定和校核····································54：校核a传动组齿轮················································75：校核b传动组齿轮·················································76：主轴挠度的校核··················································87：轴的校

4、核·························································98：主轴最佳跨距的确定··············································99：各传动轴支承处轴承的选择········································1010：计算跨距·······················································10三、心得体会·············································11四、参考文

5、献·············································11一、设计目的通过机床主运动机械变速传动系统得结构设计，在拟定传动和变速的结构方案过程中，得到设计构思、方案分析、结构工艺性、机械制图、零件计算、编写技术文件和查阅技术资料等方面的综合训练，树立正确的设计思想，掌握基本的设计方法，并具有初步的结构分析、结构设计和计算能力。二、设计步骤1.运动设计1.1已知条件[1]确定转速范围：主轴最小转速最大转速[2]确定公比：[4]最大加工直径250mm[5]主电动机功率P=4kw根据已知条件可得变速范围Rn=nmax/nmin=22.3r/min故Z=

6、lgRn/lg+1=9故转速级数：1.2结构分析式在降速传动中，防止齿轮直径过大而使径向尺寸常限制最小传动比；在升速时为防止产生过大的噪音和震动常限制最大转速比。在主传动链任一传动组的最大变速范围。在设计时必须保证中间传动轴的变速范围最小，检查传动组的变速范围时，只检查最后一个扩大组：其中，所以，合适1.3绘制转速图⑴选择电动机一般车床若无特殊要求，多采用Y系列封闭式三相异步电动机，根据原则条件选择Y132M1-6型Y系列笼式三相异步电动机。⑵分配总降速传动比[3]确定传动轴轴数传动轴轴数=变速组数+定比传动副数+1=2+1+1=4⑷确定各级转速并绘制转速图由　　z=9确定各级转速：

7、1000、710、500、355、250、180、125、112r/min。在四根轴中，除去电动机轴，其余三轴按传动顺序依次设为Ⅰ、Ⅱ、Ⅲ。Ⅰ与Ⅱ、Ⅱ与Ⅲ之间的传动组分别设为a、b。现由Ⅲ（主轴）开始，确定Ⅰ、Ⅱ轴的转速：①先来确定Ⅱ轴的转速500，355，250r/min②确定轴Ⅰ的转速传动组a的级比指数为1，确定Ⅰ轴转速为500r/min由此也可确定加在电动机与主轴之间的定传动比。下面画出转速图（电动机转速与主轴最高转速相近）。[5]确定各变速组传动副