共查询到18条相似文献,搜索用时 93 毫秒
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通过理论推导和计算给出了A/B双摆角数控万能铣头摆角力矩的计算公式,并初步验证了公式的正确性.摆角力矩计算公式的研究对摆角铣头的结构设计具有重要的指导意义. 相似文献
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简要介绍了国内外力矩电动机直驱技术的应用现状,双摆角铣头的使用要求和典型结构;重点阐述了力矩电动机在双摆角铣头应用中需要解决的技术问题和障碍;最后给出了两个典型应用实例。 相似文献
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In this paper, the cutting torque of a CNC machine tool during machining is monitored through the internet. To estimate the
cutting torque precisely, the spindle driving system is divided into two parts: electrical induction motor part and mechanical
part. A magnetized current is calculated from the measured three-phase stator currents and used for the total torque estimation
generated by a spindle motor. Slip angular velocity is calculated from the magnetized current directly, which gets rid of
the necessity of a spindle speed sensor. Since the frictional torque changes according to the cutting torque and the spindle
rotational speed, an experiment is adopted to obtain the frictional torque as a function of the cutting torque and the spindle
rotation speed. Then the cutting torque can be calculated by solving a 2nd order difference equation at a given cutting condition. A graphical programming method is used to implement the torque monitoring
system developed in this study to the computer and at the same time monitor the torque of the spindle motor in real time through
the internet. The cutting torque of the CNC lathe is estimated well within an about 3% error range in average in various cutting
conditions. 相似文献
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双内圈大接触角双列角接触球轴承,合套后不可随便拆套。介绍组装前如何选配套圈,计算游隙和修磨内圈小端面,使配套的成品零件一次组装成合格的产品。 相似文献
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S. Mohsen Safavi S. Saeed Mirian Reza Abedinzadeh Mehdi Karimian 《The International Journal of Advanced Manufacturing Technology》2010,49(9-12):1069-1077
CNC machining nowadays makes more use of "Mechatronics" increasingly. Combining numerical control with mechanic, electric, and data processing systems can lead to new methods of production. In recent years, the development of CNC has made it possible to perform nonlinear correction motions for the cutting of spiral bevel gears. In this paper, we attempt to manufacture the spiral bevel gear using a three-axis CNC milling machine interfaced with an additional PLC module based on traditional discontinuous multicutting method accomplished by using a universal milling machine interfaced with an indexing work head. This research consists of (a) geometric modeling of the spiral bevel gear, (b) simulating the traditional and our new nontraditional method using a CAD/CAE system, (c) process planning for CNC machining and PLC Programming, (d) experimental cuts with a three-axis CNC milling machine were made to discover the validity of the presented method. The results demonstrate that invented experimental cutting method of SBGs not only is less expensive than advanced CNC machining but also produces gears in a shorter time in comparison with the traditional cutting. Thereby, it is an economical method in manufacturing of SBGs. 相似文献
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针对发动机缸盖燃烧室周围冷却水道孔小而深,需要进行定点清洗的需求,设计了一种数控机床定点清洗刀具喷头。对这一刀具喷头的结构进行了介绍,对走刀路径进行了确定。应用这一刀具喷头,可以实现多点定位有效清洗,缩短空行程路径,提高工作效率。 相似文献
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为了在国产数控螺旋锥齿轮加工机床上实现端面弧齿联轴节的加工,对固定式端面弧齿联轴节的加工方法进行了研究。分析了端面弧齿联轴节的切齿原理和切齿方法,根据固定式端面弧齿联轴节的调整计算卡,建立了刀盘半径、刀齿顶宽、切削刃压力角、刀尖圆角半径的计算方法。基于端面弧齿联轴节的切齿原理以及国产数控螺旋锥齿轮加工机床的结构,建立了弧齿联轴节切齿加工机床调整参数的计算方法,给出了相关的计算公式并开发了端面弧齿联轴节设计、加工参数计算软件。在国产H350G型数控螺旋锥齿轮磨齿机上,基于软件计算得到的机床调整参数进行了实际的磨齿加工,通过实际的接触区检测和几何参数检测,验证了切齿加工参数计算方法的正确性。 相似文献