公差

Making the full use of the theoretical knowledge of FEA,contact mechanics and friction wear,and integrating with the research of other domestic and international scholar. Starting with analyzing working characteristics of journal bearing of roller cone bit, we finished the contact FEA of the journal bearing and the thrust bearing, using ANSYS software. The tolerance ranges of journal bearing of a roller cone bit are specially studied.

本文利用有限元、接触力学和摩擦学理论知识，同时结合国内外其它学者的研究，从分析牙轮钻头滑动轴承的工作特性入手，利用软件ANSYS完成了牙轮钻头中大、小轴承及止推轴承的接触有限元分析工作，对牙轮钻头滑动轴承的尺寸公差的取值，进行了专门的研究和探讨。

Using this method, alignment between headstock and tailstock centers is not able to be adjusted, and is far from what would be considered "close tolerances." All leadscrews have 1/4-20 threads, with the cross slide and main lead screws being the appropriate left-hand lead, while the tailstock is a right-hand lead, so turning the handwheel always advances the slide away from the user.

使用这种方法，路线之间的 headstock和尾架中心，是无法加以调整，是远远没有到会被认为是&密切公差&的所有leadscrews有1/4-20线程，与两岸幻灯片和主要领导螺丝被适当的左莅带头作用，而尾架是一个右手边的铅，因此，把手始终进展幻灯片远离用户。

Several processing plans for an automobile dust cap were put forward after a discussion on the component structure and dimensional tolerance.

通过对汽车防尘盖的结构和尺寸公差的分析，提出了几种加工工艺方案，对各方案进行了论证，最终确定了采用单工序模成形该零件，在1个工位同时完成成形和切断2个工序。

The design engineer must be careful in using tolerances of an experimental part that has been product on the engine lathe by a skilled operator.

设计工程师应该认真地确定由熟练工人在普通车床上加工的试验零件的公差。

It has the followed merits: independent with other exist CAD software; AVAS can choose linearized method in tolerance analysis to obtain higher efficiency as compared to the Monte Carlo Simulation; AVAS can deal with two or more assembly sequence in one model.

系统具有如下特点：不依赖于其他CAD软件；可选择线性化方法或二次化求解方法进行公差分析，与采用蒙特卡洛相比效率更高；可在同一模型中计算多条装配顺序而无需重新建模。

Involute gears ; gear pairs ; gear transmission ; gear tolerances backlashes/backlashes of an involute gear pairs

渐开线齿轮；齿轮剂；齿轮传动；齿轮公差；侧隙/渐开线齿轮副侧隙

Dimensional checking and tolerances of underframes with or without body of articulated wagons with 3 bogies.

带或不车体的由3个转向架组成的货车底架的尺寸检验和公差

Tolerances, gaps, surfaces, installation chamfers, length of bearing surface, length of stroke, frequency, speed, etc.

公差，间隙，表面，安装倒角，表面承受的长度，行程的长度，频率，速度等等。

All PLUS emulsions are manufactured to the highest tolerances using the latest production and test equipment.

所有普乐士乳剂制造的最高公差采用最新的生产和测试设备。

Additional contributors to efficiency include a lower, wider front air dam, tighter tolerances and gaps between the fascias, lamps and grille openings, and improved front-end sealing that nearly eliminates air leak paths.

效率得到更多的捐助，包括低的，更广泛的前气坝，更严格的公差之间的仪表板，灯和格栅开口的差距，提高前端密封，几乎消除了漏气路径。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。