步进器支承体毛坯图A0
摘要
步进器支承体是步进器上重要的支承零件，支承安装在步进器上面的零部件，为步进器的正常工作提供支撑。该零件其材料选择QT400-10球墨铸铁，这种材料铸造性能良好，具有较好的切削性能，耐磨性都相当不错，弹性很好，可以对很多比较复杂工件进行铸造。本次毕设需要完成工件加工工艺还有镗Ф126孔的加工。
在对加工工艺设计之前，需要完成了工件作用，构造还有加工要求的分析，对工件制造方式，生产方式等进行了确定，确定加工余量并绘制出毛坯图。选择了2个加工工艺路线，确定了最为合理的一种，填写了加工工艺过程卡。计算了切削用量和加工的工时，填写了加工工序卡。
对零件分析后发现，该零件镗Ф126孔需设计一套镗床专用夹具对其进行加工。依据定位原理和夹紧装置的设计要求，设计了加工本工序的定位和夹紧方案，依据方案选择了相应的原件，设计了夹具体以便和机床连接，设计了镗模座以便安装导向装置镗套，最后画了夹具装配图还有非标零件图。
关键词：步进器支承体、加工工艺，Ф126孔、镗床、专用夹具
Abstract
The stepper support is an important support component on the stepper that supports the components mounted on the stepper to provide support for the normal operation of the stepper. The material of this part is QT400-10 ductile iron. This material has good casting performance, good cutting performance, goodwear resistance and good elasticity. It can cast many complicatedworkpieces. This time, it is necessary to complete theworkpiece processing process and the processing of BoringФ126 holes.
Before designing the machining process, it is necessary to complete theworkpiece action, the structure and the analysis of the machining requirements, determine the manufacturing method and production mode of theworkpiece, determine the machining allowance and draw the blank drawing. Two processing routeswere selected to determine the most reasonable one, and the process cardwas filled out. The machining amount and the processing timewere calculated, and the machining process cardwas filled out.
After analyzing the parts, it is found that the BoringФ 126 hole of the part needs to be designedwith a special clamp for the boring machine. According to the positioning principle and the design requirements of the clamping device, the positioning and clamping scheme of the machining processwas designed. The corresponding original partswere selected according to the scheme, and the clipswere designed to be connectedwith the machine tool. The mold basewas designed to install the guiding device. In the end, the fixture assembly drawing and the non-standard parts drawing are drawn.
Keywords: stepper support, machining process,Ф126 hole, boring machine, special fixture
目录
摘要I
Abstract II
第一章前言1
第二章分析零件结构、确定制造形式及生产类型2
2.1分析步进器支承体的作用2
2.2分析步进器支承体的结构2
2.2.1分析步进器支承体组成表面2
2.2.2分析步进器支承体加工表面加工要求3
2.2.3分析步进器支承体形位公差3
2.3选择步进器支承体的材料3
2.4确定制造形式3
2.5确定生产类型4
第三章步进器支承体加工工艺规程的设计5
3.1选择零件的加工基准5
3.2设计加工工艺路线5
3.2.1选择加工工艺路线5
3.2.2确定加工工艺路线6
3.3选择机加工工艺装置7
3.4确定零件的加工余量7
3.5确定零件切削用量、计算加工工时10
第四章设计镗Ф126孔的专用夹具27
4.1设计定位方案27
4.2确定定位元件27
4.3设计夹紧方案28
4.4确定夹紧元件28
4.5设计夹具体28
4.6选择镗孔导向零件—镗套29
4.7计算镗削力29
4.8计算夹紧力30
4.9分析定位误差31
第五章总结32
致谢33
参考文献34
夹具装配图A0
定位块A2
夹具体A1
菱形定位销A4
镗模座A2
圆柱定位销A4
步进器支承体零件图A0
加工过程卡
夹具设计部分
设计所包含文件
镗Φ126孔夹具
字数统计
加工工序卡
说明书前三页
