中心钻

It has been clear for some time that the groundwater level at Giza is rising. Pools were forming in front of the Valley Temple of Khafre, and people were worried that this might endanger the Sphinx and its temples as well. In early 2008, the SCA, in cooperation with Cairo University's Engineering Center for Archaeology and Environment, drilled four boreholes, each 4 inches in diameter and about 20 meters deep, into the bedrock at the base of the Sphinx. A camera lowered into each borehole allowed the engineers to examine the geological configuration of the plateau beneath the Sphinx. In addition, a small well called a piezometer was inserted into each borehole to monitor the underground water level. The investigation revealed that the water came up to about 15.6 meters above sea level, not an immediate threat to the statue, but cause for concern in the long term. I decided that it would be best to go ahead and address this threat before it could become more acute.

吉萨的地下水位呈上升趋势已不是一天两天的事了山谷中哈夫拉庙的前面正在形成一个个水塘，人们担心这样下去会危及狮身人面像和庙宇 2008年初，在开罗大学工程中心的合作下，最高文物委员会着手处理考古和环境方面的问题他们在狮身人面像基座的基岩上钻了四个直径4英寸，深约20米的孔，每个深孔中放入一个摄相机，让工程师们可以检查到狮身人面像下方的高原地质结构此外，把一个称为测压表的管子插入到每个钻孔中，监测地下水位调查显示，目前水位已达海拔15.6米以上，虽还未直接威胁到雕像，但提醒我们要长期关注我决定，最好防患于未然，在问题变得更尖锐之前采取一些措施应对这一威胁

Because the horizontal lathe craft scope is quite widespread, may in the turning the outer annulus cylinder, the circular conical surface, the ring channel, the solid of revolution formation surface, the turning end surface and each kind of commonly used metric system, the British system, the mold notational system, the pitch system thread, but also may carry on drills the center bore, the drill hole, the broaching, reams, work and so on tapping, wrap thread and knurling.

因为卧式车床的工艺范围相当广泛，可以车削内外圆柱面、圆锥面、环形槽、回转体成型面，车削端面和各种常用的公制、英制、模数制、径节制螺纹，还可以进行钻中心孔、钻孔、扩孔、铰孔、攻螺纹、套螺纹和滚花等工作。

This paper is concerned with the drilling spindle system design.

本文主要针对钻削中心的主轴系统进行设计。

A clamping design approach for automated fixture design based on dowel-pin system is presented in this paper, which accepts a polygonal and columniform description of the part silhouette.

本文提出了基于孔系组合夹具的零件夹紧方案的自动设计方法，适用于由平面和圆柱面组成的工件在三轴加工中心等机床上的钻铣加工工艺。

Chung Kung High Speed CNC Machining Centers can efficiently process solid wood, plastic, and light metals such as copper and aluminum. These machines are able to perform a complete set of processing functions such as milling, slotting, drilling, and mortising. The main advantages of these machines are outlined below

台湾中工 CNC 高速数控加工中心以加工实木，塑料，铜铝等轻金属以及变压器绝缘件为主，是各种木制，塑料，绝缘材料，铝制品零部件完成铣型、开槽、钻，孔、榫头及榫眼等全套加工的代表设备，和常规加工方式相比，其主要优点在于

Chung Kung High Speed CNC Machining Centers can efficiently process solid wood, plastic,light metals such as copperaluminum. These machines are able to perform a complete set of processing functions such as milling, slotting, drilling,mortising. The main advantages of these machines are outlined below

台湾中工CNC高速数控加工中心以加工实木，塑料，铜铝等轻金属以及变压器绝缘件为主，是各种木制，塑料，绝缘材料，铝制品零部件完成铣型、开槽、钻，孔、榫头及榫眼等全套加工的代表设备，和常规加工方式相比，其主要优点在于

The company mainly engaged in varieties have: cars, milling, planing, grinding, drilling, boring, shearing machine, bending machine, hydraulic press, forging equipment, general machine tools, EDM, wire cutting, CNC lathes, CNC milling machine, Machining Center CNC machine tools, etc..

公司主要经营品种有：车、铣、刨、磨、钻、镗、剪板机、折弯机、油压机、锻压设备等普通机床，电火花、线切割、数控车床、数控铣床、加工中心等各类数控机床。

Main products include: High Precision Universal Boring Head, Spring Collet, Tap Collet, Quickly-exchanging Collet, Speed-increased Cottet, High-force Spring Collet, Drill Collet, High Precision Tool Holder, High Precision Indexing Taper Gauge, Extension Bar, Type CSG Tooling System for CNC Turning Machine and CNC Taper 7∶24 Tooling System for CNC Machining Center.

&马牌&产品规格齐全、质量稳定，畅销世界各地，在国内外享有声誉，生产产品有精密万能镗头、弹簧夹头、攻丝夹头、快换夹头、强力型弹簧夹头、钻夹头、精密刀杆、高精密度圆锥量规，各类接杆以及数控车床CSG型工具系统和数控加工中心7∶24锥度各种数控工具系统等。

Our goal, through the optimization of product design, combined with our sophisticated processing equipment and testing instruments, as well as first-class assembly technology and the environment, to create an internationally competitive, cost-effective, brand-new TC series of high-speed drill reactive center to meet the needs of domestic and foreign markets.

我们的目标，通过优化的产品设计，辅之我公司精良的加工设备和检测手段以及一流的装配技术和环境，制造出具有国际竞争力，高性价比，全新的TC系列高速钻功中心，来满足国内外市场的需要。

This module machine tool needs to be realized to drill the center bore and mill the ends of the axle.Also it can do with automatic control and by hand.

本组合机床要求能实现钻中心孔和铣两端面，能进行手动和自动控制，铣削头能作10mm的微调。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。