【作者】 宣苓娟；

【导师】 张媛； 孙斌武；

【作者基本信息】 山东科技大学 ， 机械制造及其自动化， 2011， 硕士

【摘要】 内圆磨床是金属切削机床中的一种,主要用于磨削圆柱形和圆锥形内表面。并且目前国内现有的内圆磨床系列中具有最大加工能力的为M250A,其加工能力为：磨削最大孔径中500mm,最大深度450mm。而泰安力博机电科技有限公司基于产品的生产加工要求,需要一台大型的内圆磨床,其最大加工能力应为：磨削最大孔径Φ850mm,最大深度500mm; M250A的加工能力无法满足其生产加工要求。基于经济、实用、高性价比等原则的考虑,且通过市场调查,决定自行研制一台高性能的内圆磨床。此内圆磨床的研制不仅可以满足公司生产加工的需要,还填补了内圆磨床系列的空白,而且也为今后大型机床的研究设计起到了一定的借鉴作用。在设计过程中,参考了现有内圆磨床设计的传统方法及经验,并且在经济实用的基础上,为了实现高性能、高自动化等优点,本课题还在内圆磨床的研究与设计中采用了一些新型技术。磨床床身采用卧式结构,床头箱带动工件做回转运动,工作台带动砂轮架实现纵向往复运动,砂轮架在工作台上实现横向进给运动。砂轮架处导轨采用燕尾形滚动导轨,降低了砂轮架的整体高度,提高了砂轮架系统的稳定性；采用双速电机作为砂轮的动力源,使得在磨削不同工件采用不同的砂轮时,安装调试更加方便快捷,提高了磨床的生产效率；砂轮架主轴带传动采用带轮卸荷结构,可以将皮带传动的压轴力卸荷到砂轮架的箱体上,提高了主轴的刚度和回转精度；在砂轮架主轴轴承支承系统中设计一种新型的柱销式内反馈动静压轴承,大大提高了轴承的刚度和主轴的回转精度,保证了产品加工的质量；为提高内圆磨床生产效率及保证加工面的加工质量,砂轮采用立方氮化硼砂轮；同时冷却系统采用强制冷却的方法,提高冷却质量,延长砂轮的使用寿命以及工件的加工质量。更多还原

【Abstract】 Internal grinder is a kind of Metal-cutting machine tools, mainly used for grinding the inner surface of cylindrical and conical. And the M250A is the largest machining ability in the current domestic existing series of grinder, its processing capacity:the maximum grinding diameter isφ500mm, the maximum depth is 450mm. Taian Libo Mechantronic Technology Co.LTD., in order to content the production process, needs a large internal grinder, the maximum processing capacity should be:the maximum grinding diameter isφ850mm, the maximum depth is 500mm. The processing capacity of M250A can not meet the requirements. In the economic, practical, cost-effective principles of consideration, and get through the market research, so decide to develop a high-performance internal grinder. This internal grinder not only meets the needs of the company’s production and processing, but also fill up the gaps in internal grinder series, and have played a certain reference for the study of larger machine tools in the future.In the design process, reference to the traditional methods and experience which design of internal grinder, and on the basis of economy and practicaliyt, in order to achieve the high-performance, high-automation, etc., this project adopt some new technologies in the design. The internal grinder adopt he horizontal bed, the headstock only driven workpiece to do rotary movement, the workbench drives the grinding carriage to realize the vertical reciprocating motion, the grinding carriage achieves horizontal reciprocating on the workbench. The guide rail of grinding carriage is the dovetail rolling guide, reduce the integral height of the grinding carriage, enhance the stability of the grinding carriage; adopt the Double-speed motor as power source for the grinding carriage, so as to, it will be more convenient and Speedily on the installation and debugging, while using the different grinding wheel to grind different workpiece, so improve the production efficiency of Internal grinder; The Belt transmission of the principal axis of grinding carriage adopts unloading structure, the power causeed by belt drive can transmit into the grinding carriage’s box, Increase the stiffness and ratation accuracy of the principal axis; We design the Turbulent Hybrid Bearing with a new pin feedback restrictor for the principal axis of grinding carriage, greatly improving the stiffness and ratation accuracy of the bearing, and ensure the quality of the product processing; In order to improve the production efficiency and ensure the quality of the product, the Grinding Wheel use the CBN as abrasive; Meanwhile Cooling System adopt the method of compulsory cooling, to enhance cooling quality, and prolong the service life of the grinding wheel, and improve the workpiece machining quality.更多还原