jkm8318数控凸轮轴靠模磨床砂轮架设计.rar

JKM8318数控凸轮轴靠模磨床砂轮架设计

里面有详细的图纸，ppt，论文，外文翻译

目录

设计总体说明…………………………………………………………………………………………………...1
Design General Information…………………………  ………………………………………..………………2
1  前言 4
1.1 凸轮轴简介 4
1.2 简述凸轮轴数控磨床的产生和发展 4
1.3 论述设计凸轮轴磨床砂轮架的原因 5
1.4 本课题研究的内容和方法 6
1.4.1研究内容 6
1.4.2研究方法 6
2  JKM8318数控凸轮轴磨床简介 7
2.1 机床的技术规格 7
2.2 机床部件 7
2.3 机械传动系统 9
2.3.1 机械传动系统结构 9
2.3.2 砂轮架的传动设计 11
2.4 液压系统 11
2.4.1液压系统组成 11
2.4.2液压系统的功能： 11
3  砂轮架设计 13
3.1砂轮架简介 13
3.2砂轮架电机的选择 13
3.2.1磨削力的计算 14
3.2.2磨削功率的计算 15
3.2.3电动机功率的计算 15
3.3砂轮架主轴的设计 16
3.3.1主轴材料的选择 16
3.3.2主轴的结构设计 16
3.3.3主轴的强度校核计算 17
3.4主轴的刚度校核计算 20
3.4.1轴的扭转刚度计算 20
3.4.2轴的弯曲刚度计算 20
3.5 液体的动静压轴承设计 21
3.5.1液体动静压轴承的概述 21
3.5.2 动静压轴承的结构参数设计 23
4  砂轮架箱体设计 25
4.1箱体材料的选择 25
4.2箱体设计 25
结束语 27
致谢 28
参考文献 29
 
设计总说明

凸轮轴是发动机配气机构的一部分，专门负责驱动气门按时开启和关闭，作用是保证发动机在工作中定时为汽缸吸入新鲜的可燃混合气，并及时将燃烧的废气排出气缸。凸轮轴的加工精度较高，整个加工不可能在一个工序内完成。为了利于逐步的达到加工要求，把整个工艺过程划分为三个阶段：粗加工——半精加工——精加工，以完成不同加工阶段的目的和任务。在齿轮的加工中，最重要同时也是难度最大的是凸轮形面的加工。该形面的加工方法目前主要有车削和磨削两种。凸轮轴的毛胚采用精铸的方法得到，毛胚的精度较高，切削量少，故采用磨削的加工工艺，简化了凸轮形面的加工。JKM8318数控凸轮轴磨床是根据目前市场需要，在原简易数控、三座标凸轮轴磨床基础上改进开发出来的高速、高效数控凸轮轴磨床。采用CBN砂轮磨削，砂轮线速80-120米/秒，有机地将靠模与数控，双循环磨削和CBN砂轮强力磨削两种先进的磨削方式综合，加工效率远远高于普通凸轮磨床，1-2倍工作，稳定性好，操作维护简单，自动化程度较高，在国内具有领先地位，本机床主要适用于汽车、摩托车、内燃机的凸轮轴粗加工和半精磨加工。机床主要特点：采用德国西门子(SIEMENS)802Dsl或华中HNC210B数控系统,控制工作台移动、砂轮架进给、头架主轴旋转、和导轮移动。采用具有我公司自主知识产权的。可选择单CBN砂轮和双CBN砂轮磨削。砂轮架导轨采用“静压卸荷”耐磨贴塑导轨。砂轮修整采用电主轴金刚石滚轮修整。JKM8318运用高速磨削技术，高速磨削与普通磨削相比具有突出的技术优势可大幅度提高磨削效率,减少设备使用台数这大大提高了磨削效率，且明显降低磨削力，提高了零件的加工精度。可以明显降低磨削力,提高零件的加工精度,能实现对硬脆材料(如工程陶瓷及光学玻璃等)。随着高速磨削的应用，对砂轮架的要求也越来越高。CBN高速内置式电主轴砂轮架得到了运用。砂轮架中的高速主轴的具有很高的运动精度，回转误差一般在0.2μm以下，这样既提高了砂轮的使用寿命，又可以达到很高加工精度和很低的表面粗糙度。液体动静压轴承的使用更使得高速主轴得到充分的利用。

【关键词】 靠模；高速磨削；高速主轴；液体静动压轴承

Design General Information

camshaft is part of the engine valve train, and dedicated to drive the valve open time and off, is to ensure that the inhalation of the fresh fuel mixture engine at work from time to time for the cylinder, and promptly to the combustion exhaust gas cylinder. Camshaft high machining accuracy, the entire processing can not be completed within a process. To meet the processing requirements in order to contribute to the progressive, the whole process is divided into three stages: roughing - semi-finishing - finishing in order to complete the purpose and tasks of the different stages of processing. In the machining of gears, the most important is also the most difficult processing of the cam-shaped surface. Turning and grinding of the shaped surface processing methods. Camshaft blanks using the method of casting blanks of high precision, less cutting, so the grinding process to simplify the processing of the cam-shaped surface. JKM8318 CNC camshaft grinder is based on the current market needs, improve on the basis of the original simple numerical control, coordinate camshaft grinder developed high-speed, efficient CNC camshaft grinder. The CBN grinding wheel, wheel wire speed 80-120 m / s, organically by mold and CNC grinding two-loop grinding and CBN grinding wheel, powerful grinding two integrated processing efficiency is much higher than ordinary cam grinder 1-2 times the work, good stability, simple operation and maintenance, high degree of automation, and has a leading position in the country, this machine is mainly used in automobiles, motorcycles, internal combustion engine camshaft roughing and semi-fine grinding. Main Characteristics: Germany's Siemens (SIEMENS) 802Dsl or the Huazhong HNC210B CNC system, control the table moves, the wheel frame feed, spindle head frame, and guide wheel mobile. With independent intellectual property rights of the company. Choice of single CBN grinding wheel and CBN grinding wheel. The wheel frame rails using hydrostatic unloading wear plastic coated rails. Wheel dressing with electric spindle diamond roller dressing. Use of high-speed grinding technology, high-speed grinding and grinding JKM8318 compared with outstanding technical advantages can greatly improve the grinding efficiency, reduce equipment number of greatly improving the grinding efficiency, and significantly reduce the grinding force to improve the machining accuracy. Can significantly reduce the grinding force, improve the machining accuracy, and achieve the hard and brittle materials (such as engineering ceramics and optical glass, etc.). With the application of high speed grinding wheel frame, CBN high speed built-in electric spindle wheel frame has been used. The wheel frame in high-speed spindle with high motion accuracy and rotation error is generally below 0.2μm, so that not only improves the service life of the grinding wheel, but also can achieve high machining accuracy and very low surface roughness. Hydro Bearing the use of more high-speed spindle can be fully utilized.

[Keywords]：By mode; high-speed grinding; High Speed Spindle； Static and hydraulic dynamic bearing