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Based on the idea of the structure parametric design method, the parametric finite element model of drill chuck with complicated spiral surface character was established.'The related key technologies of drill chuck's strength analysis were discussed and solved, such as the contact analysis parameters selection, the boundary conditions and the load processing, ANSYS command一string building and so on.

本文采用结构参数化设计方法建立了含有复杂螺旋曲面特征的钻夹头参数化有限元模型；探讨和解决了钻夹头夹紧强度分析中夹爪与螺母接触分析参数的选择、约束边界和载荷处理、分析流程文件创建等关键技术问题。

Front-end floating pneumatic power chuck, with combined functions of self-centering clamp and floating compensation clamp, is used for machining of pipe end.

前置式气动浮动动力卡盘是集自定心夹紧和浮动补偿式夹紧二功能于一身，用于管道的端头加工，加工笔直管道时，使用自定心夹紧功能；加工的管道若有弯曲变形或加工弯管端头时，则采用定心卡盘辅助定心，用本卡盘的浮动夹紧功能夹紧管子后，退开定心卡盘再加工管子端头。

Trans-Blot Cells and Systems 170-3825 Trans-Blot Cell With Wire Electrodes and PowerPac HC Power Supply, 100120/220240 V, includes 2 gel holder cassettes, buffer tank, lid with power cables, 4 fiber pads, 1 pack precut blot absorbent filter paper (15 x 20 cm), power supply, power cord, instructions 170-3850 Trans-Blot System With Plate Electrodes and PowerPac HC Power Supply, 100120/220240 V 170-3853 Trans-Blot System With Plate Electrodes, Super Cooling Coil, and PowerPac HC Power Supply, 100120/220240 V, includes 2 gel holder cassettes, buffer tank, lid with power cables, 4 fiber pads, 1 pack precut blot absorbent filter paper (15 x 20 cm), power supply, power cord, instructions 170-3910 Trans-Blot Cell With Wire Electrodes, includes 2 gel holder cassettes, buffer tank, lid with power cables, 4 fiber pads, 1 pack precut blot absorbent filter paper (15 x 20 cm) 170-3939 Trans-Blot Cell With Plate Electrodes and Super Cooling Coil, includes 2 gel holder cassettes, buffer tank, lid with power cables, 4 fiber pads, 1 pack precut blot absorbent filter paper (15 x 20 cm) 170-3946 Trans-Blot Cell With Plate Electrodes, includes 2 gel holder cassettes, buffer tank, lid with power cables, 4 fiber pads, 1 pack precut blot absorbent filter paper (15 x 20 cm) Trans-Blot Cell Accessories 170-3912 Super Cooling Coil, required for all high-intensity transfers 170-3913 Gel Holder Cassette, includes 2 fiber pads 170-3914 Fiber Pads, 15.5 x 20.5 cm, 6 170-3920 Trans-Blot Standard Wire Electrode Card, cathode 170-3921 Trans-Blot Standard Wire Electrode Card, anode 170-3922 Trans-Blot Cell Buffer Tank 170-3923 Trans-Blot Cell Lid With Power Cables 170-3943 Trans-Blot Platinum Anode Plate Electrode 170-3944 Trans-Blot Stainless-Steel Cathode Plate Electrode 170-3945 Trans-Blot Plate Electrode Pair, platinum anode and stainless-steel cathode 16 规格:说明: Trans-Blot Plus

电泳转印槽组件 1。缓冲液槽及带有电缆的盖 2。凝胶支架转印夹 3。纤维衬垫 4。电极丝 5。电极板 6。特级冷却芯 Trans-Blot 转印槽是功能灵活的转印设备，可理想地用于多种转印应用。Trans-Blot 转印槽特点包括：*能进行多胶转印，可容纳3 块PROTEAN I xi 凝胶、6块Criterion 凝胶、12块Mini-PROTEAN 3 或Ready Gel 预制胶*多组参数灵活可设，可调节的电压设置（从30 V 的过夜转印到200 V 的1 小时快速实验）*电极间距设置为8 cm 用于标准印迹杂交，或设置为4cm 用于高强度印迹杂交*可选择板式电极：涂有铂金的钛作为正极，不锈钢为负极，能提供高强度电场和比其它电极更高的电流密度。或选择较经济的铂金电极丝*通过特级冷却芯和水循环仪来调节温度―是天然酶（4°C）或高强度转印的理想选择，随着转印时间增加（多达24 小时），不会引起缓冲液耗竭（在高强度转印中必须使用冷却芯，也推荐用于所有板式电极的应用）*带铰链的凝胶支架转印夹能避免滑动，确保凝胶与印迹膜间的紧密接触；每个转印夹都有颜色标记以保证在转印槽中的正确定位 Trans-Blot 转印槽的锁闭凝胶支架转印夹系统。转印夹（1）支撑凝胶（2）印迹膜（3）两侧有纤维衬垫和滤纸（4）确保凝胶三明治内的完全接触。凝胶夹垂直插入缓冲液槽中（5）。

In the vicinity of the pulley to be removed, clamp the top strand at a distance suited to the winching equipment available,winch in the clamp to pull slack out of the section of conveyor between return clamp and top strand clamp and securely tie the clamp to an adequately strong part of the conveyor structure or other suitable anchor.

夹持回程皮带带芯钢丝绳，位置尽量靠近需要更换的滚筒。注意：对于爬坡或下坡皮带来说，您可使用多个皮带夹，可牢靠夹持皮带防止夹持不牢靠遭成打滑。将皮带夹进行牢靠锚接固定，也可直接将其直接固定到输送机支架的坚固部件上或其它可靠的锚接锁链上。具体参考输送机设计图纸。

The influences of the structural and movement parameters of the arc-track-type flexible holding and conveying mechanism and the sugarcane stalks geometric parameters on the conditions of sugarcane stalks outward windrowing, windrowing angle and distance were analyzed.

对甘蔗在夹持输送终点抛出后和着地时的运动学进行了理论分析，并建立了数学模型，推导出了甘蔗向外铺放的条件，以及甘蔗铺放距离、铺放角的理论计算公式，分析了圆弧轨道式柔性夹持输送装置结构参数、运动参数、甘蔗几何参数对甘蔗向外铺放、铺放距离、铺放角的相互影响规律；对甘蔗在夹持输送过程中的受力情况进行了理论分析，建立了甘蔗在夹持输送装置中所需最小夹持力模型，以及甘蔗质心距柔性夹持元件上端最大距离模型。

Through discussing the existing problems in traditional terminal anchoring and connection clamp s of GLCN250 and LBGLJ185, proposes the improving measures by means of reducing the wedge coning, processing inner threads inside the wedge and widening the opening of the hollow wedge.

通过对传统使用的GLCN250接触线终锚线夹及接头线夹、LBGLJ185终锚线夹及接头线夹存在问题的探讨，对终锚线夹提出了减小楔子的锥度，在楔子内表面加工内螺纹，加宽空心楔子开槽宽度等改进措施。

According to work piece size, characteristic and its material choice cutting specifications; Because of the thick mill diesel engine cylinder body two sides, then the jig design use "two sells the localization at the same time", Manual clamps, an attire clamps processes the diesel engine to be mad the cylinder body two sides; according to will work receives the cutting force to calculate clamps the strength; again according to clamps the strength , choose the determination clamp the special-purpose part.

由于是粗铣柴油机气缸体两侧面，则夹具的设计采用&一面两销&定位，手动夹紧，一次装夹加工柴油机气缸体的两个侧面，保证了加工精度，提高了生产效率；根据工作将受到切削力来计算夹紧力；再根据夹紧力来选择确定夹紧装置的专用部件。

By means of theoretic analysis and experimental investigation,the clamping efficiency behavior of power-operated wedge hook chuck is studied.

对楔面动力卡盘的夹紧效率特性进行了理论分析和实验研究，建立了楔面动力卡盘夹紧效率的数学模型，研究了夹紧传动机构摩擦系数、楔面角度、卡盘工作参数以及连续重复夹紧次数等参数对夹紧效率的影响规律，对卡盘的优化设计和应用以及夹紧力计算具有指导意义。

Independent development, production Dan Huangjia head, milling chucks, quick change chuck, chuck tapping, and other top-selling machine annex across the country, and exports to the United States, Japan, Taiwan and other countries and regions, and then to a mere Plans to sample processing.

自主开发、生产的弹簧夹头、铣夹头、快换夹头、攻丝夹头、顶尖等各种机床附件畅销全国各地，并出口美国、日本、台湾等国家和地区，并可乘接来样来图加工。

objective:to explore the effects of out cavity single slip knot technique in non titanium clip two hole method laparoscopic cholecystectomy.methods:to analyzed the clinical data of 62 patients underwent two hole method lc with out cavity single slip knot technique.results:all the operations were finished successfully without conversion.the mean operation time and hospitalization were 55 min and 4d respectively.conclusions:the two hole lc with out cavity single slip knot technique has the advantage of firm and reliable ligation,low operation expense,non titanium clip stay in the body,and avoiding of bile leakage due to titanium clip falling off.

目的：探讨腔外单滑结技术在无钛夹二孔法腹腔镜胆囊切除术中的效果。方法：应用腔外单滑结技术行二孔法lc 62例。结果：患者均行lc，无中转开腹，手术平均时间55min，平均住院4d。结论：无钛夹腔外单滑结法lc具有结扎可靠，手术费用低，并可消除因钛夹留置体内或夹闭不全造成脱落、胆漏等其他并发症。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。