The paper describes the effects of electrical servo system on nc machine tools and introduces the performance criteria of the servo system.
文章介绍了伺服系统在数控加工中的作用以及伺服系统的主要性能指标。
Research of constant cutting load control in machining process of nc machine tools is of much academic significance and engineering importance.
数控机床加工过程的恒负荷控制是一种极具理论意义和工程价值的研究。
Although the process of nc machine tools has many things in common with that of traditional machine tools, there exist many differences between them.
数控机床的加工工艺与普通机床的加工工艺虽有诸多相同之处，但也有许多不同之处。
The whole sets nc machine tools of lower prices generally choose the stepping driving unit and the price higher machine tool selection servo drive unit.
整台数控机床价格较低的一般选择步进驱动单元，而价格较高的机床选择伺服驱动单元。
On the basis of analysis concrete methods for increasing the reliability of nc systems and utilization-coefficient of nc machine tools are also suggested.
并在分析研究的基础上指出了提高NC系统可靠性和NC机床利用系数的具体途径和方法。
Our factory production environment is good, the machining center, nc machine tools are more.
本厂生产环境良好，机械加工中心有多台数控加工机床。
As an important part in the nc programming, the function of post-processing is to transfer the cutter location file into the nc program suitable to nc machine tools.
作为数控编程技术的重要内容，后置处理的作用是将通用的刀位文件转换成适合于数控机床加工的NC程序。
To solve the problem, a synthetic experiment platform for nc teaching is built to illustrate nc principle visually and to simulate fault diagnosing of nc machine tools.
本文以此为出发点，构建了数控教学综合实验平台，以期实现数控原理的形象化展示与故障诊断的模拟维护。
Modeling of nc machine tools is the foundation of processing simulation and the universal modeling method is the one of the requests assuring high efficiency of simulation.
数控机床建模是数控加工仿真的基础，通用化的建模方法是保证仿真高效的要求之一。
The nc machine tools's integrative network can improve greatly workshop's production and management, and enhance the utilization ration of the nc machine tools, and enlarge the machining capability.
数控机床的集成联网能明显改善车间的生产组织与管理，提高数控机床利用率，拓展数控机床的加工能力。
Part programming is the crux in the use of NC machine tools.
数控加工程序编制是数控机床使用中的关键。
As examples, models of two NC machine tools were re-designed.
在此基础上，以两台数控车床为例进行了造型的再设计。
And then this thesis makes a work study of the process of operating NC machine tools.
同时，利用工作研究分析法，对数控机床的使用操作过程进行了研究。
Stiffness is one of the main considerations in the design of varied-axis NC machine tools.
刚度是变轴数控机床设计需要考虑的主要因素之一。
A grouping optimization modeling for the thermal errors of NC machine tools was presented.
提出数控机床热误差分组优化建模。
On - machine testing is an effective measure to guarantee machining accuracy of NC machine tools.
在机检测是保证数控机床加工精度的有效手段。
It can also be used in NC machine tools as a system for quick measurement with derivation engineering.
也可用在数控机床中，作为反求工程中的快速测量系统。
A reliability evaluation test plan of NC machine tools based on exponent distribution was investigated.
研究了基于指数分布的数控机床可靠性评估试验方案。
NC machine tools work so fast that their production rate is equal to the rate of five manually operated machine tools.
数控机床工作迅速，其生产率是手动机床的五倍。
Analyzing the reasons of noise of gear drive system in NC machine tools and proposing the measures taken to improve it.
分析数控机床齿轮传动系统产生噪声的原因，并提出改善措施。
The multiple motion errors duringcircular interpolation of NC machine tools can be obtained by using double ball bar tester.
可用双球规测量装置测得数控机床圆弧插补运动的综合误差。
The Modeling and identification methods have universal and can be used in describing the error of multi-axis NC machine tools.
建立误差的模型和辨识误差的方法具有通用性，可以推广到其它多轴数控机床误差建模和误差辨识的分析之中。
NC machine tools are difficult to maintain and often result in heavy economic losses when they go wrong due to the high prices.
数控机床由于价格昂贵，一旦出现故障，维修困难，常带来较大的经济损失。
To control the access of NC machine tools, to clear the purpose of the address and the source address to prevent illegal access.
对数控机床访问进行控制，明确访问的目的地址与源地址，防止非法访问。
Five-axis NC machine tools are widely used in sculptured surface machining for its higher performance than 3-axis machine tools.
五轴数控加工以其灵活、高精度、高效率等特点在复杂曲面加工中得到了越来越广泛的使用。
The basic principle and method of time series analysis and its application in thermal error modeling on NC machine tools were presented.
提出了采用时间序列分析法进行机床热误差建模的基本原理及方法，及其在数控机床热误差补偿建模中的应用。
The form design of NC Machine Tools is a complicated work that comprehends the knowledge of aesthetics, ergonomics and product structure.
数控机床造型设计是一项综合了美学知识、人机工程知识和产品结构知识的复杂的设计活动。
The rotating of the stepping motor, the working procedure of the NC Machine Tools and the movement of the conveyer belt are controlled by PLC.
采用PLC对数控机床的加工工艺流程、步进电机的旋转以及零件输送带的运动进行控制。
The rotating of the stepping motor, the working procedure of the NC Machine Tools and the movement of the conveyer belt are controlled by PLC.
采用PLC对数控机床的加工工艺流程、步进电机的旋转以及零件输送带的运动进行控制。
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