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摘要
本次设计从企业实际需求出发,在全面分析被加工零件的结构特点、尺寸精度、被加工孔相互之间位置精度、表面粗糙度和技术要求的基础上,指出采用现有设备不仅工人劳动强度大,生产率低,而且零件加工精度难以保证。根据实际需要,研制出了卧式三面单工位组合钻床。
本文首先通过分析比较,确定了卧式三面单工位组合钻床的配置型式及结构的最佳方案,遵循机械设计中标准化、通用化、系列化原则,给出机床的总体设计,按照设计组合机床“三图一卡”的原则绘制出代表机床总体设计的被加工零件工序图、加工示意图、机床联系尺寸图和生产率计算卡。由于在本台组合钻床上需同时加工三个部位共24个孔,不仅孔多、间距小,采用常规方法排箱无法实现三个加工部位孔的工序集中的加工方案。本钻床的主轴箱传动系统通过采用变位齿轮和滚珠轴承等结构方面的创新设计,将常规方法下不能完成的排箱成为可能。
关键词: 组合钻床、主轴箱、夹具设计、传动设计
Abstract
In view of the actual conditions of enterprises and on the basis of
overall analysingworkPiece structure features,accuracy of size,surface roughness,accuracy of distance between drilled holes and other technical requirements,this article Points out that the existing equipments used to manufacture work Pieces may result in lower Productivity,greater intensity of labor and worse working accuracy. Therefore,it 15 necessary to develop a new type of 24hole single working bination drilling machine.
Through analysis parison,the article has determined the best
Project ofthestructure and the disposition of the 24 bination drilling machine. According to the Principle of standardization,generalization and serialization in machine design,the article offers the master design of the drilling machine,the Process drawing of
work Piece,the working diagram,the connection dimensional drawing of
The drilling machine and the calculating card of Productivity. In some key Parts of the drilling machine,there are certain new designs on the structure of the spindle box and the fixture .With 24hole drilled simultaneously on the drilling machine,in addition to small Spacing between holes and dispersive arrangement of hole Position,the 24 holes drilling Program cannot pleted in conventional way. In the transmission system of 24 hole drilling machine are used some new structural designs such as Pin bearings and Position一changeable gears,50 that the arrangement of hole Position,which cannot be finished in conventional way,can be drilling m