发动机缸体双面扩孔组合机床总体设计及右主轴箱设计
摘要：本课题设计的是发动机缸体双面扩孔组合机床，此机床是对发动机缸体零件的两侧面六个孔进行扩孔加工。
本次设计的组合机床主要由总体设计和右主轴箱的设计两部分构成。第一部分主要是对机床的配置形式进行确定、选择机床设计的结构方案，对所设计的机床进行三图一卡绘制。第二部分的右主轴箱设计包括绘制主轴箱设计原始依据图、确定主轴和齿轮、完成动力计算、设计传动系统、绘制主轴箱装配图和零件图。在进行组合机床总体设计时，第一步是对发动机缸体零件进行分析，应根据发动机缸体两侧面上6个孔的位置精度、表面粗糙度及其他技术要求，拟订总体方案。本次所需加工的发动机缸体零件是需要大量生产的，在对第二部分进行设计的时候，需要考虑装夹引起的误差问题。考虑到孔比较多，需要把原来的单孔加工改为多孔加工。
本次设计的机床，是用来对发动机缸体零件进行加工的机床，具有实际的意义与价值。
关键词:组合机床；零件加工；右主轴箱设计
Design of General and Rear Headstock of Modular Machine Tool for Enlarging Holes on Cylinder Body
Abstract:This subject comes from Jianghuai power group, engine cylinder block is the one of the products of mass production in Jianghuai. This issue is the design of aggregated machine tool surface for enlargingsix holes on two-side of cylinder diesel,The aggregatedmachine tool is used to enlarge6 holes, which are on the left and right surfaces.
The important point of this topic is the system design and the right headstock design. In the first part includes the definite of the aggregated machine tool, the selecting of the structure plan and the drawing of “three pictures and one card”. The right headstock design includes drawing the primitive basic chart for the headstock, determining the system, drawing the headstock assembly drawing and thepart processing chart.Conducting modular machine to system design,first engine cylinder block’sleft and right surface enlarging 6 holes accuracy of the location, surface roughness, and other technical requirements,develop overall program.The headstock is a product which needs maspindle and the gears, completing the power computation, designing the transmission s production. Headstock in the design, the design is the main ideas from the original multi-channel process to the processing of porous single hole while processing, this design is mainly to solve the fixture by the time the positioning error caused the problems to ensure the accuracy of the location of holes.
This aggregated machine tool for enlarging holes on cylinder body design comes from Jianghuai power group. This design has much actual meaning and value.
Key word:Aggregated machine tool; Part manufacturing;Right headstock design
目 录
1绪论 1
1.1组合机床的特点分析 1
1.2组合机床的加工范围 1
1.3组合机床适用的零件工艺范围和加工精度要求 1
1.4组合机床的经济分析和发展趋势 2
2组合机床的总体方案设计 3
2.1 加工工艺方案的拟定 3
2.1.1工艺方案拟定的原则 3
2.1.2被加工零件的特点分析 3
2.2 零件加工工艺的确定 3
3绘制三图一卡 5
3.1加工工序图 5
3.2 加工示意图 5
3.2.1刀具的选择 5
3.2.2导向套的选择 6
3.2.3确定导向套距离端面的距离 6
3.2.4计算切削力、切削扭矩及切削功率 6
3.2.5确定工作行程长度 7
3.3 机床联系尺寸图 7
3.3.1动力箱、电动机、动力滑台及与其所配套的附件选择 8
3.3.2组合机床的其他尺寸的确定 8
3.3.3 组合机床的联系尺寸简图 9
3.4生产率计算卡 9
3.4.1理想生产率Q 10
3.4.2实际生产率 10
3.4.3机床负荷率 10
3.4.4生产率计算卡的绘制 11
4 主轴箱的设计 12
4.1 主轴箱的简单介绍 12
4.2 主轴箱的原始依据图的设计 12
4.3主轴、齿轮及动力运算 13
4.3.1主轴的型式、直径、齿轮的齿数的设计 13
4.3.2主轴箱的动力计算 14
4.4主轴箱的传动设计 15
4.4.1拟定传动轴 15
4.4.2传动零件的校核 16
4.4.3主轴箱的坐标计算 17
4.5传动系统的设计与计算 18
4.5.1齿轮参数的计算 19
4.5.2轴径尺寸的确定 19
4.5.3齿轮、轴径和轴承的校核计算 19
4.6绘制右主轴箱的总装配图和零件图 21
4.6.1主轴箱的总装配图的设计 21
4.6.2主轴箱的零件图设计 21
5 结论 23
参考文献 24
致 谢 25
声 明 26
附 录 27
