机械机电类毕业论文(毕业设计)-m2120内圆磨床的改造毕业设计.doc

摘要

本次设计主要针对数控磨床做部分改造,以适应加工产品时可以简单加工、精确定位、保证尺寸,提高加工效率,减轻工人劳动强度。
此次改造对机床的导轨和驱动等进给部件做一定的修改,以适应产品的需要,保证在生产中的精度及效率。
液压驱动对重复定位及尺寸的精度很难保证,使得在生产中很难提高效率。改用伺服电机驱动进给部件,可以保证机床的重复定位,使产品的精度不会因为操作者的原因而无法得到保证。
导轨是数控控制精度的一个方面,数控方式对导轨要求是具有高灵敏度,低摩擦阻力,高寿命等,所以对导轨的要求也比较高。一般的磨床采用的是滚动导轨,精度较低,摩擦阻力大,寿命不高,所以本次设计导轨采用的是滚动导轨
丝杠是控制精度的另一个方面,以前沿用的滑动丝杠传动效率低、导程精度低,不能满足高精度、高效率的要求,因此该用滚珠丝杠,滚珠丝杠传动系统是以滚珠为媒介的滚动螺旋传动的体系,它的传动效率高,是传统滚珠丝杠的2~4倍,运动平稳性好,精度高,较高的耐用性,可靠性高,无间隙,刚性好。
对于生产时产品的尺寸能进行补偿,保证产品一致性。另外对于产品的变更能及时进行调整,以适应不同的产品,尽量降低加工成本。
关键词:内圆磨床;数控;伺服
Abstract
The design focuses C grinding machines to do part of the transformation to adapt to the processed products can be simple processing, precise positioning to ensure that the size, improve processing efficiency, reduce labor intensity.
The transformation of ponents on the the machine rails and drive to do some modifications to modate the needs of the product to ensure accuracy and efficiency in production.
The hydraulic drive to repeat the positioning and dimensions of precision is difficult to ensure, so that is difficult to improve efficiency in production. Switch to servo motor drive feed parts can guarantee repeat positioning of the machine, the accuracy of the product will not be because of the operator's reasons can not be guaranteed.
Rails to one aspect of the numerical control C pair of guide rails requirements having a high sensitivity and low frictional resistance, high life, etc., and so on rails requirements are relatively high. The grinder is rolling guide, low accuracy, friction, life is not high, so the design rail is rolling guide
The screw is another aspect of the control accuracy, sliding screw previously used transmission efficiency is low, the lead accuracy is low, can not meet the requirements of high precision, high efficiency, so that the ball screw, ball screw drive system is based on a ball media rolling screw drive system, the transmission efficiency is high, the traditional ball screw 2 to 4 times and good, smoot