数控机床振动自检系统

数控机床振动自检系统既可以提高数控机床自检的智能化程度，预防和减少各种机电故障造成的停机损失、降低维修费用和提高产品质量，同时为机床的设计、制造和使用等提供动态跟踪手段。     

Tool life determination based on the measurement of wear and tool force ratio variation

Non-linear regression analysis techniques are used to establish models for wear and tool life determination in terms of the variation of a ratio of force components acting at the tool tip. The ratio of the thrust component of force to the power, or vertical, force component has been used to develop models for (i) its initial value as a function of feed, (ii) wear, and (iii) tool lifetimes. Predictions of the latter model have been compared with the results of experiments, and with predictions of an extended Taylor model. In all cases, good predictive capability of the model has been demonstrated. It is argued that the models are suitable for use in adaptive control strategies for centre lathe turning.     

密封型放射源表面污染与泄漏检测的探讨

对胜利石油管理局测井公司和中国海洋石油测井公司现有145枚测井用的与刻度用的密封型放射源表面放射性污染与泄漏进行了检测。结果表明,约有近半数以上的密封源受到不同程度的放射性污染。其中约有10%的密封源有较严重的放射性污染,甚至超过国家标准的有关规定,说明对测井用密封源实行定期检测具有重要的现实意义。根据初步检测结果,对今后测井用密封源的表面污染与泄漏检测提出了具体建议。     

高效洗井液体系GX—1研究与应用

高效洗井液体系ＧＸ１由隔离液、泡沫和油层清洗液组成。本文报道了该体系的组成、作用原理及各组成分室内性能测定结果（稳定性、伤害性、悬浮性、携砂能力和除垢能力）。又研制了垂向及径向流洗井工具，使用该工具和ＧＸ１体系能高效地冲洗射孔眼、井眼及油层。介绍了洗井工艺方法，通过３个井例说明了此项洗井工艺技术的现场应用效果     

压铸模具材料抗粘模试验

叙述了钨基合金在铝合金液中的抗蚀性试验情况。结果表明，钨基合金对铝合金液的抗蚀性能比3Cr2W8V钢和45号钢高，在640-740℃的温度范围内提高达10倍以上，所以钨基合金可用来做深腔或在浇道开设时不能避免合金液冲刷型面的模具材料，对形状复杂的薄壁件则更为有利。     

W型隔板床身壁厚与振型关系的研究

以机床的Ｗ型隔板床身为例，采用有限元分析方法，阐述床身结构尺寸参数变化对其动态性能的影响，为进行产品的结构设计提供理论依据，将此方法用于大件系列产品的设计研究，对提高结构动态性能将起到积极的推动作用。     

A smart boring tool for process control

A mechatronic metal cutting tool has been developed to improve the accuracy and flexibility of line boring machining in the automotive industry. Laser position sensors and piezoelectric actuator were integrated into the rotating body of the boring tool. To compensate the boring bar droop and effects of cutting forces, a fast tool servo utilizing feedback control of the boring tool insert position was designed and embedded in the rotating tool assembly. In addition to position control, a self-monitoring algorithm that utilizes disturbance estimator has been put together in the controller. Experimental results demonstrated that the developed cutting process controller improves the accuracy of the boring tool as well as reliably detects the process failures, such as tool tip breakage, without additional monitoring equipment.     

Rough and finish tool-path generation for NC machining of freeform surfaces based on a multiresolution method

Progressive fitting and multiresolution tool path generating techniques are proposed in this paper, by which multi-level (LOD) models fitting for different subsets of sampled points are obtained, and then multiresolution rough-cut and finish-cut tool paths are generated based on the LOD models. The advantages of the proposed method are: (1) the user need not care for data reduction in CAD modeling; (2) final result is obtained by interpolating two lower-level reconstructed surfces, and each lower multiresolution CAD representation can be used to generate rough-cut tool paths; (3) different manufacturing requirements utilize different level models to generate tool paths; (4) selective refinement can be applied by interpolating selceted areas at different levels of details. The key avantage of the prograssive fitting algorithm is that it can use different level surfaces to generate adaptive rough-cut and finishi-cut tool path curves directly. Therefore, based on the proposed techniques, tool path length is reduced. Sharp concers are smothed out and large tools can be selected for rough machining. The efficiency of this algorithm has been demonstrated, and it results in a 20% reduction in machining time.     

并联机床轨迹规划的数据安全校验

本文从几个方面考虑了形成数据的安全问题，在一定程度上保证了机床的工作安全，同时还开发了相应的数据安全校验软件，使用方便。     

数控6滑块精密工作台加工点位移计算的研究

根据位移叠加原理 ,提出了在垂直载荷及力矩载荷作用下数控 6滑块精密工作台上加工点的位移计算公式。为求解其他载荷作用下精密工作台上加工点的位移提供了一种重要的方法。研究成果为补偿精密机床的加工误差提供了理论依据