机器在高速运转中，针杆部极易发生渗油现象。
Oil leakage often easily happens to the needle stems when machines are running at great speed.
超长针杆行程，大互动量交替压脚，缝厚能力更显出色；
The super needle bar stroke and super alternating presser foot make its feature of heavy duty sewing even more outstanding;
采用了高刚性的送料，针杆天平结构，防止弯曲与歪斜。
Having adopted the giving the material of high rigidity, the pole balance structure of the needle, prevent from crookedly and crookedly.
在针杆两旁的凹槽可以保护和带引纤维，及降低穿刺力。
The fillister in both sides of the needle-bar can protect and carry fabrics and reduce puncture force.
在针向上运动时，被握持的线圈从针舌上滑到针杆上，为退圈。
Clearing occurs as the held loop slips off the latch and onto the stem as the needle moves upwards.
针排运动采用针杆架机构，无需另外加油，从而避免了油污面料的现象发生。
The needle bar running with needle bar frame, no need to add extra lube and avoid the materials be soiled by lube.
分析了宝石磨削过程中的夹具针杆的受力模型，建立了基于因次解析法的夹具针杆磨削力计算公式。
The force model of the jig needle bar in the process of grinding diamonds were analyzed, and the calculation formula of grinding force was established.
本发明涉及一种缝纫机，该缝纫机具有可驱动以上下运动的针杆，该针杆上可固定缝纫针以用于引导针线。
This invention discloses a sewing machine having stem to be driven to perform longitudinal movement; wherein the stem can be fixed with sewing needle for guiding threads.
提出挠流阻力引起探针杆挠曲造成水流场测量误差的迭代计算修正方法，分析该方法的收敛性及收敛方式。
A method was proposed to correct errors in water flow field measurements with 5 hole probe because of rod bending caused by flow drag. The convergence of the computing method was analyzed.
首先，通过有限元分析选择合适的夹具针杆定位点，给出了夹具针杆的挠度分布图和夹具本体的结构设计方案。
Firstly, the right jig needle bar supporting point was chosen and the deflection distribution figures and the drawing of jig body were given.
第二章，针对复杂宝石加工专用装备夹具针杆刚性较差的问题，提出了基于有限元分析的夹具针杆挠度控制技术。
In the second chapter, aiming at solving the rigid problem of the jig needle bar, an accuracy control method based on FEA was put forward.
第二章，针对复杂宝石加工专用装备夹具针杆刚性较差的问题，提出了基于有限元分析的夹具针杆挠度控制技术。
In the second chapter, aiming at solving the rigid problem of the jig needle bar, an accuracy control method based on FEA was put forward.
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