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根据真空泵转子在加工过程中存在的精度差、叶片槽底有振纹等问题,重新编排加工工艺规程,并设计铣叶片槽专用平口钳工装。基于此,本文以真空泵转子加工与改进作为研究对象,根据真空泵转子加工部分和精度要求,探究其加工工艺与工装改进,针对真空泵的铣叶片槽进行工装改进设计。 相似文献
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某型轴承由于没有专用的外圈止动环压装工具,只能采用手工操作方式,致使操作者劳动强度大且易被划伤,同时无法保证止动环完全进入到外圈止动槽中。针对上述问题设计了压入止动环的工装,该工装结构简单、实用,既节省了人工成本又提高了生产效率。 相似文献
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以一款生产效率高、成本低、产品性能稳定的LC-Bas悬挂起重机轨道为研究对象,介绍与其同类别产品的差异化。依据LC-Bas轨道特点,分析制定生产工艺规程,依据工艺规程分析设计每道工艺工装,并对生产工装进行结构分析、工装定位分析、尺寸计算等。在实际生产中,验证了LC-Bas轨道生产工装能满足其尺寸和使用要求,解决了该型轨道在国内生产制造问题。 相似文献
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生产中经常会遇到需要开槽的丝堵、销钉类零件,当零件较小时,直接在平口钳上开槽显得就比较困难,而且效率低、废品率高。文中设计的简易开槽工装就解决了该问题。利用该工装在平口钳上一次可以为多个零件开槽,即使在零件可夹持部位的螺纹较短、零件的材料较软、存在密封面的情况下,也能轻松开槽,不会损伤零件。实践证明该工装效果良好。 相似文献
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Research on tool path planning method of four-axis high-efficiency slot plunge milling for open blisk 总被引:1,自引:1,他引:0
J. X. Ren C. F. Yao D. H. Zhang Y. L. Xue Y. S. Liang 《The International Journal of Advanced Manufacturing Technology》2009,45(1-2):101-109
The great mass of machining allowance for blisk is removed in the rough milling, so improving the rough machining efficiency for the blisk’s tunnel is the key of realizing high-efficiency machining of blisk. According to the structure characteristic of open blisk’s tunnel, a four-axis plunge slot rough milling with high-efficiency and low machining cost is advanced. First, the plunge slot process for blisk and the generation process of the ruled enveloping surface for the freeform surface of the blisk’s blade are put forward. Then, the generating method of the ruled enveloping surface for the blade’s freeform surface and the tool path generation method of four-axis plunge slot milling for blisk are studied. The rough milling region of open blisk’s tunnel is determined by generating the ruled enveloping surface of blade’s offset surface, and the algorithm of tool path for four-axis plunge milling is given. When using a ruled surface to approach a freeform surface, the problem of getting boundary is solved, and the error from the calculation of tool path is avoided by the algorithm. At last, the experiment shows that comparing to the traditional side slot milling, the cutting force of four-axis plunge milling can be reduced by 60% and even the rough machining efficiency can be increased to more than double. 相似文献
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H. M. Mahgoub Dr I. A. Craighead 《The International Journal of Advanced Manufacturing Technology》1996,12(3):221-229
In view of the high investment and tooling cost of a CNC machining centre, the cutting and idle times should be optimised by considering the tool consumption and the non-machining time cost components. In this paper, we propose a detailed mathematical model for the operation of a CNC machine tool which includes the system characterisation, the cutting conditions and tool life relationship, and related constraints. This new module will be a part of an overall computer-aided process planning system to improve the system effectiveness and to provide consistent process plans. A hierarchical approach is presented for finding tool-operation assignments, machining conditions, appropriate tool magazine organisation and an operations sequence which results in the minimum production cost. 相似文献
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在枪管、飞机叶片、弹体壳腔等的微细裂纹无损检测试验研究中,需要先在这些场合预制微细人工伤。为解决这类微细人工伤的单件或者小批量加工问题,需要研究一种加工环境质量要求相对较低、热效应及残余应力相对较小的新型加工方法。本文提出一种应对加工需求的新方法,即以普通的电火花加工原理为基本雏形,利用微细脉冲产生的电弧放电热,逐步将金属微量熔蚀,在加工间隙中,使油液及时将切屑冲走,以实现顺利加工。通过样机开发与实际加工效果分析可知,工件切口面满足要求,样机工作可靠,实现了小型化与便携功能,能够解决微细有槽孔结构的单件或者小批量快速加工问题,为金属材料的微裂纹蚀刻设备的微型化与无损检测技术奠定了基础。 相似文献
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刀具在加工过程中不可避免的存在着磨损和破损现象,刀具的消耗直接导致工件精度下降和生产成本增加。开展了一系列实验,深入研究刀具状态监测方法,构建了新型铣削过程刀具磨损监测试验系统。通过振动传感器和声发射传感器对铣削过程中不同磨损程度刀具的信号进行检测、采集、分析。选择对刀具磨损状态反映敏感的特征量。采用BP神经网络,建立刀具磨损特征向量与刀具磨损状态之间的非线性映射关系。 相似文献