机械毕业设计论文cad图纸：珩齿加工机床珩磨头部分的设计.zip

毕业设计：珩齿加工机床珩磨头部分的设计
论文说明书共49页，字数总计：18647
资料内容简介：
A3-弹簧夹头.dwg
A2-底座.dwg
A3-法兰盘.dwg
A2-珩磨轮.dwg
A2-滑座.dwg
A3-偏心盘.dwg
A3-心轴.dwg
A3-圆盘.dwg
A2-主轴.dwg
A0-装配图.dwg
中文翻译.doc
外文原件.pdf
英文原文.doc
摘要.doc
外文.doc
前言.doc
目录.doc
开题报告和中期报告.doc
翻译.doc
毕业设计论文说明书：珩齿加工机床珩磨头部分的设计.doc
摘要
随着科学技术的发展，即使原来属于先进的机床也会变得陈旧、落后，满足不了产品种类日益增加和质量不断提高的需要，因此有必要以现有的机床为基础，对机床的使用工艺和装备进行革新，对机床的现有结构进行改装。这样既可以使现有机床的加工能力得以提高，同时又能节约新机床设计研发时间，可以得到许多意想不到得效果。
本次毕业设计的题目是珩齿加工机床的珩磨头部分设计，这是在普通车床上面进行改进设计的。本改装采用的是双面变压珩磨法，珩磨轮与工件的啮合关系、运动情况和剃齿大体上相同；其特点是工件带动珩磨轮正反转动，珩磨轮沿轴线作往复直线运动。但径向运动不像剃齿那样在每次往复行程后都有一次进给，而是按珩齿所需要的初压力调整好珩磨轮与工件的中心距，开车后一次进给到预定的位置。珩齿开始时齿面的压力较大，随后逐渐减小，直至接近消失时珩齿结束。
应当指出,虽然珩齿的运动和剃齿大体相同,珩轮的结构和剃齿刀比较相似,但是珩齿过程的本质和剃齿是不相同的,其特点如下：
(1) 珩轮的齿面上均匀密布着磨粒,各磨粒间以粘结剂相隔.珩磨速度远比磨削时低.因此,珩齿切削过程的本质是低速磨削﹑研磨和抛光的的综合过程。
(2) 珩轮的磨粒可以看成是十分接近的连续的切削刃,珩齿的过程可以接近于连续挤压的过程.因此,珩磨后齿面上的切削纹路很细,光洁度比剃齿高,不会产生冷硬现象。
(3) 珩轮弹性大,不能强行切下误差部分的金属,因此,珩齿修正误差的能力没有剃齿强.而另一方面,珩轮本身的误差,也就不会全部反映到齿轮上,因此珩轮的精度要求不高,而对珩前的齿轮则要求较高的精度.珩齿主要用于改善表面质量。
(4) 珩齿时,齿面间除了沿齿向产生滑动切削外,沿渐开线方向的滑动使磨粒也能切削,于是就构成了齿面刀痕的复杂纹路,使齿面的光洁度提高。
本改装是在普通车床上进行的,主要用于除去齿轮热处理后的氧化皮及毛刺,可使光洁度从▽6提高到▽8~10，齿轮传动噪声也略有降低,生产率很高.但对齿形和齿向误差的纠正很不稳定，有时甚至会使齿形误差有所增大。珩齿效果很大程度上决定于前一道工序加工的精度和热处理的变形量，一般可应用于加工6～8级精度的齿轮。
总之，珩齿由于其具有提高齿面光洁度、降低噪音、效率高、成本低、设备简单、操作方便等一系列优点，故是一种很好的齿轮精加工方法。
关键字：珩齿加工，珩磨头，珩磨轮
Abstract
Along with science and technology development, even if originally belongs to the advanced engine bed also to be able to change obsoletely, is backward, could not satisfy the product type toincrease the need day by day which and the quality unceasingly enhanced, therefore had the necessity take the existing engine bed as the foundation, carried on the innovation to the engine bed use craft and the equipment, carried on the reequipment to the engine bed existing structure. Like this both may enable the existing engine bed the processing ability to enhance, simultaneously and can save the new engine bed design research and development time, may obtain many is unexpected the effect.
This graduation project topic is the top horizontal jade piece tooth processes the engine bed honing a forehead minute design, this iscarries on the improvement design above the conventional lathe. This reequipment uses is the two-sided live pressure top horizontal jadepiece bothers, the top horizontal jade piece emery wheel and the work piece mesh the relations, the movement situation and roughly is photogenic with; Its characteristic is the work piece impetus top horizontal jade piece emery wheel pro and con rotation, the top horizontal jade piece emery wheel makes the straight reciprocating main motion along the spool thread. But after the radial motion does not like such each time to move back and forth the travelling schedule all to have time enters gives, but is the initial pressure which needs according to the tophorizontal jade piece tooth adjusts the good top horizontal jade piece emery wheel and the work piece center distance, drives latter time enters for the position which prearranges. The top horizontal jadepiece tooth starts when the tooth face pressure is bigger, afterwards gradually reduces, when close vanishes top horizontal jade piece toothconclusion.
Must point out, although the top horizontal jade piece tooth movement and the more or less the same, a top horizontal jade piece turnof structure and quite is similar, but the top horizontaljade piece tooth process essence and is not same, its characteristic as follows:
(1) On a top horizontal jade piece turn of tooth face even is being densely covered abrasive, each abrasive to the cementing agent is separated by honing the speed far rubs truncates time is lower than Therefore, the top horizontal jade piece tooth cutting process essenceis the low speed rubs truncates grinds and polishes the comprehensive process.
(2) The top horizontal jade piece turn abrasive may regard as is extr..