加工方法

The part represented by the polygon of the half section profile in its axis plane and cutter's trajectories for recording and arranging machining errors data are presented based on the analysis of the geometrical characteristics of the part and machining in turning process.

根据车削加工工件的几何外形和成形特点，提出了包含加工误差信息的回转体类工件半剖轮廓多边形建模方法和记录、组织加工误差信息的刀具轨迹法。

Owing to the complexity of CIMS' missions,the reliability modeling should adapt the production processes accurately.Conventional reliability model method can not reflect the time dynamic behavior of CIMS,so the multitask reliability model based on generalized stochastic Petri nets is established for a CIMS manufacturing shop with multiple missions and the process times of the machines with exponential distributions.Furthermore,analysis of GSPN model based on behavior expression and moment generating function is presented,then can compute the transfer functions.Finally,the multitask reliability can be easily obtained without the reachability graph of Petri nets,which measure can reflect the operating performance of the whole multitask CIMS more intuitively.

CIMS生产的复杂性要求其可靠性模型可以精确地反映生产过程，由于传统的可靠性建模方法无法兼顾CIMS的时间动态特性，所以针对一个复杂的有多个加工任务的CIMS制造单元，由于其机器加工工件的时间均为指数分布，则采用广义随机Petri网进行多任务可靠性建模，在此基础上基于Petri网行为表达式，将矩母函数思想引入其中，不必生成可达标识图就可通过计算模型的传递函数，进而得到整个系统的多任务可靠度，该可靠性指标可以更直观地反映具有多种加工任务的整个CIMS的运行性能。

Finally, the best values of the diameter of prefabricate hole and extrusion speed is determined through optimize simulation results,In the end, forming experiments study of cold extrusion is processed, experiments results shows that internal thread of C195 knuckle axis can be formed by cold extrusion method, and the extrusion torque is varied when diameter of prefabricate hole and extrusion speed is a series of different value.

最后对挂钩轴内螺纹的加工进行了一系列的实验研究，经过多次实验的失败反复，最终挤压加工出了符合要求的内螺纹；实验结果表明该零件内螺纹时可以采用冷挤压成形方法加工的，并且验证了成形过程中挤压扭矩是随着工件底孔直径和挤压速度的变化而变化的。

A: in prefabricated according to process, in accordance with the order of the process to determine the manner and process technology.

答：在加工前根据加工方案的要求，按照工艺的顺序确定加工工艺的方式、方法。

The research situation of waste water treatment of gum rosin process ing at home and abroad was generally summarized.

概述了国内外对松脂加工废水治理的研究情况，系统分析了松脂加工废水的来源及特点，介绍松脂加工废水治理方面的成功方法和经验，通过分析生产过程的监控数据，为我国松香行业的污水处理提供了经验和依据。

During the mounting, the compinents unfurl them to retrieve circularity. The thesis will elaborate the programming method in how to use NUM System′N/C Center to machine and have process analyses on them with high precision on condition that the big locating hole and the 3-25H7 cylindriform ...

在没有将变形的定位大孔及3-25H7圆柱定位销孔分布圆恢复成圆形的情况下，在NUM系统的加工中心加工，对其进行的工艺分析和保证高加工精度的编程方法。

Based on theories of envelope and discrete mathematics, the geometric models of flutes being machined are theoretically studied, the approaches of checking machining theories and simulation of machining process are discussed, and wireframe or entitative simulation pictures are given.

基于包络和离散数学理论，论文对加工后的刀槽几何模型进行了理论性研究，讨论了成形理论检验及加工过程的仿真方法，给出了加工过程线框的或实体的仿真图形。

In order to select or adjust viscosity easily, determine other processing parameters in AFM, and forecast the result of AFM, a method is proposed that can quantificationally describe different viscosities of flowable abrasive mixture by means of fuzzy mathematics theory.

为了便于实际加工中选择或调整黏度，合理确定其他加工参数，以及预测加工结果，针对仅有对流体磨料黏度定性说明的现状，提出用模糊数学理论定量描述流体磨料黏度的方法。

This paper,based on an analysis of the process of grooving the workpiece,sets up a mathematics model for the feed engagement,which varies with t...

通过对切断加工过程的分析，建立了进给量随加工直径变化的数学模型，通过调用宏程序变量的方法，实现了刀具工作后角恒定，从而在数控切断、切槽加工中解决了这一难题。

According to practical experience,the paper analyzed the factors to cause end breakage of small yarn package at the first floor of polyester POY post processing,put forward the control methods,which can improve production efficiency and quality.

根据生产实践的经验，分析造成涤纶POY后加工底层小卷丝断头的各种原因，提出减少POY后加工底层小卷丝断头的控制方法，从而提高后加工的生产效率和产品的质量。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。