摘要 本次设计的题目是发动机支架立式单面组合钻床设计，是在发动机支架上加工4个深6mm，尺寸要求17的孔。 本次设计分为总体设计和主轴箱设计两个部分。首先，对机床进行总体结构的设计，需要确定切削用量、计算切削力、切削扭矩、切削功率及刀具耐用度,然后以此确定主轴、外伸尺寸等,绘制“三图一卡”，即被加工零件工序图、加工示意图、机床尺寸联系总图，以及生产率计算卡。其次，对主轴箱进行设计，绘制设计原始依据图，确定主轴箱及各个通用部件的选用，计算各齿轮的传动比和主轴的坐标位置。最后，根据分析的结果，对齿轮和轴的强度和刚度进行校核。 本专用机床能满足加工要求，保证加工精度，机床运转平稳，工作可靠，结构简单，装卸方便，便于维修、调整、操作，减轻了工人的劳动强度，提高了劳动生产率。 关键词：组合机床；钻孔；主轴箱；传动设计 Abstract The desig
n topic is E
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n 目录 摘要I Abstract II 第1章绪论1 1.1组合机床综述1 1.2组合机床总体设计2 1.2.1被加工零件的特点3 1.2.2工艺路线的确立3 1.2.3机床配置型式的选择4 第2章组合机床的结构设计与计算5 2.1切削扭矩及切削功率的计算5 2.2组合机床总体设计6 2.2.1被加工零件工序图6 2.2.2加工示意图8 2.2.3机床联系尺寸总图13 2.2.4机床生产率计算卡15 2.3确定主轴箱轮廓尺寸17 2.4通用部件的选择18 第3章组合机床主轴箱设计20 3.1绘制主轴箱设计原始依据图20 3.2主轴、齿轮的确定及动力计算21 3.3主轴箱传动系统的设计与计算22 3.3.1驱动轴、主轴的坐标计算22 3.3.2拟订主轴箱传动路线22 3.3.3确定传动轴位置和齿轮齿数22 3.4多轴箱坐标计算、绘制坐标检查图24 3.4.1选择加工基准坐标系XOY，计算主轴、驱动轴坐标24 3.4.2计算传动轴的坐标24 3.4.3绘制坐标检查图24 3.5齿轮强度校核24 3.5.1校核齿根弯曲疲劳强度25 3.5.2校核接触疲劳强度26 3.6传动轴直径的确定和轴的强度校核27 3.6.1轴的直径的确定27 3.6.2轴的强度校核27 3.7主轴箱体及其附件的选择设计31 3.7.1主轴箱的选择设计32 3.7.2主轴箱上的附件设计32 结论33 致谢34