section groove

Machining principle for non-cylinder pin hole of piston based on giant magnetostrictive material;

基于超磁致伸缩材料的活塞异形销孔加工原理研究

Study on processing of shaped spinneret orifices and their effects on spinning;

喷丝板是纺制高质量纤维的关键部件,其异形微孔的加工一直是制约异形纤维发展的一个瓶颈。

Boring a oval piston pine hole(OPPH) at rotating speed of 3 000 r/min,a boring bar must work with feed frequency of 100Hz.

3 000 r/m in下加工椭圆形活塞异形销孔,要求刀杆的进刀频率为100Hz,普通的机械机构难以适应这种要求,提出了一种基于磁致伸缩材料的高频响伺服刀杆结构。

Research on boring mechanism for piston noncircular pin hole;

新型活塞异形销孔加工方法的研究

The paper analyses the necessity for piston in modern auto to adopt noncircular pin hole.

简述了采用活塞异形销孔的必要性及其结构特点。

The paper presented a new way for piston noncircular pin hole boring which uses a piezodriven displacement mechanism.

提出一种新型活塞异形销孔数控加工方法,采用一个基于压电陶瓷驱动的柔性铰链放大机构来实现镗刀的径向微位移。

Being aimed at the difficult problem ofmachining micro shaped holes, the key technology of mi-cro--EDM system is analyzed, and the circuit topology oftraditional RC pulse generator of controlled transistor ismodified, a new micro pulse generator is designed and re-searched.

针对喷丝板异形孔加工这一工艺难题,分析了微细电火花加工系统的关键技术,并对传统晶体管可控式RC脉冲电源电路拓扑进行了改进,设计并研制出适合微细电火花加工的新型微能脉冲电源。

According to the complex structure of the shaped hole in a disc of an aircraft engine and the characteristic of the thermal-resistant Nickel-based alloy which is difficult to be machined, the processing tests had been done with the different combination of drilling, milling and grinding process, selection of the new coated cutter and corresponding cutting parameters.

根据航空发动机涡轮盘上异形孔结构复杂及镍基高温合金材料难加工的特点 ,采用钻削、铣削与磨削工艺的不同组合、选用新型涂层刀具和相应的切削参数进行了工艺试验。

The machining results show that the developed machine tool can reach the accuracy of micron order.

基于此原理开发的活塞异形销孔设备达到微米级加工精度。

Coniform Piston Pin Bore Design in DOE Method

使用DOE方法进行活塞异型销孔设计

The Changes of the Confucian Image in the Three Classic Works Written in the Period of Warring States;

战国三部诸子著作中孔子形象的变异

Fabrication of profiled microfiber spinneret based on UV-LIGA technology

基于UV-LIGA技术的微孔异形喷丝头制备

Coupled models of heat-flow-deformation for porous medium with anisotropical elasticity

各向异性弹性孔隙介质中的热-流-变形耦合模型

Design and Experiment on Seed-metering Device with Special Cells for Cole Seed

异形孔窝眼轮式油菜排种器设计与试验

Pins with split pin hole

GB/T880-1986带孔销

Research on High Polymer Flow in Spinneret Microhole and Profiled Fibers Formation Process;

喷丝板微孔中熔体流动及异形纤维成形过程的研究

One such crack formed on the net section at the pin hole, much like an eyebar failure.

形成在销钉孔净截面处的一条裂纹非常象眼杆破坏。

Study on an electromagnetic actuation mechanism for boring of non-circular hole and its control method

一种用于非圆异形孔加工的电磁驱动机构及控制方法研究

Micro EDM Technology Based on Equivalent Machining Area of Shaped Holes

基于异形孔等效放电面积的微细电火花加工技术

PRECURSORY ANOMALY OBSERVED BY DRILL-HOLE DEFORMETER PRIOR TO THE WUQIA EARTHQUAKE WITH MAGNITUDE 7.4 IN XINJIANG

新疆乌恰7.4级地震前钻孔变形计所观测到的前兆异常

Morphologic evaluation of pulmonary venous variations and pulmonary vein ostia with 64-slice spiral CT

64层螺旋CT对肺静脉变异及肺静脉孔的形态学评价

Most of the germinal apertures were 3 couples, distributed symmetrically at the three sides by the axis of symmetry of the tetrahedron.

萌发孔沟的长度、宽度、孔盖长宽与形状、突起的程度等，在个体间有差异。

bolt or cotter-pin drill

螺栓或开尾销孔钻头

Differences Make Tourism Product More Attractive--A Case Study of Shapotou;

差异形成旅游产品吸引力研究——以宁夏沙坡头市场营销为例

Fasteners--Split pin holes and wireholes

GB/T5278-1985紧固件开口销孔和金属丝孔

Porous coating graphite mould of round and special profile (for horizontal continuous casting of medium-size and small profiled materials,incrdase work efficiency).

多孔圆形、异形涂层石墨模具，用于中、小型的型材水平连续铸造，可有效提高工效。