共查询到19条相似文献,搜索用时 62 毫秒
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介绍在耐高温镍基合金上进行脉冲电解加工小孔的试验研究.分析了加工过程中脉冲宽度、脉冲间隔、工具电极进给速度对小孔加工的精度影响.结果表明:采用较小的电参数和较大的工具电极进给速度,有利于减小小孔的侧面加工间隙,提高孔的加工精度. 相似文献
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脉冲电化学齿轮表面光整加工控制系统的设计 总被引:1,自引:0,他引:1
根据脉冲电化学齿轮表面光整加工的基本特点,设计了一套控制系统。阐述了脉冲电化学齿轮表面光整加工的基本原理,并介绍了其控制系统硬件和软件的设计组成。 相似文献
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本文介绍的混气电解加工微机控制系统具有控制气液比,调节阴极进给速度和对电解机床进行程序控制的功能。该控制系统采用调节液体流量的方法适应控制加工间隙中的气液比,利用计算机的中断处理功能,获得机床主轴的和进给速度。 相似文献
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为解决感应加热过程中传送运动系统的运动交接难的问题,开发了一种以PMAC运动控制器为核心的运动控制系统,利用PMAC卡运动控制的精确性和时基控制的同步性解决了控制运动的交接问题,经试验证明所开发的系统可以达到控制要求. 相似文献
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在简要介绍嵌入式PC/104总线的基础上,讨论了基于该总线标准的开放式工业机器人体系结构.以中国科学院沈阳自动化研究所具有自主版权的开放式SIASUN-O6B机器人作为对象,将数字信号处理器(DSP)为核心的PMAC2A-PC/104可编程多轴运动控制技术运用于对工业机器人控制,并对系统的主要功能模块的技术细节进行了分析. 相似文献
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D. Clifton A. R. Mount G. M. Alder D. Jardine 《International Journal of Machine Tools and Manufacture》2002,42(11)
During the process of electrochemical machining the dependency of the inter-electrode gap with time and process parameters can be used to determine process characteristics and to define the shape of the workpiece surface relative to the tool surface. Defining process variables to map out the required gap-time function requires the use of time-consuming iterative trials. In-line monitoring of the gap would enable process control and tool to workpiece transfer characteristics to be achieved (for ideal conditions) without the requirement to generate such parameter maps. This work explores the use of ultrasound applied as a passive, non-intrusive, in-line gap measurement system for ECM. The accuracy of this technique was confirmed through correspondence between the generated gap-time and current time data and theoretical models applicable to ideal conditions. Gap measurements are also used to demonstrate and quantify the degree of departure from ideal behaviour for an In718/chloride system as the electrolyte flow rate is reduced from 16 to 4 l min−1. The monitoring of the gap size has also been shown to be effective when determining shape convergence under ideal conditions, for the example case of a 2D sinusoidal profile. 相似文献
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一种开放式机器人控制器力/位混合控制的实现方法 总被引:1,自引:0,他引:1
针对机器人主动柔顺控制在工程中如何实现的问题,开发了一种开放式机器人控制器.此控制器采用"PC PMAC"的控制结构,利用伺服驱动器的两种不同的控制模式,提出了一种实用的力/位混合控制方案,给出了相应的硬件和软件的具体实现.实验表明,文章提出的力/位混合控制方法具有良好的稳定性和力控制精度. 相似文献
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Use of hydro-abrasive jet machining (HAJM) for machining a wide variety of materials—metals, poly-mers, ceramics, fiber-reinforced
composites, metal-matrix composites, and bonded or hybridized mate-rials—primarily for two- and three-dimensional cutting
and also for drilling, turning, milling, and deburring, has been reported. However, the potential of this innovative process
has not been explored fully. This article discusses process control, integration, and optimization of HAJM to establish a
plat-form for the implementation of real-time adaptive control constraint (ACC), adaptive control optimiza-tion (ACO), and
CAD/CAM integration. It presents the approach followed and the main results obtained during the development, implementation,
automation, and integration of a HAJM cell and its computer-ized controller. After a critical analysis of the process variables
and models reported in the literature to identify process variables and to define a process model suitable for HAJM real-time
control and optimi-zation, to correlate process variables and parameters with machining results, and to avoid expensive and
time-consuming experiments for determination of the optimal machining conditions, a process predic-tion and optimization model
was identified and implemented. Then, the configuration of the HAJM cell, architecture, and multiprogramming operation of
the controller in terms of monitoring, control, process result prediction, and process condition optimization were analyzed.
This prediction and optimization model for selection of optimal machining conditions using multi-objective programming was
analyzed. Based on the definition of an economy function and a productivity function, with suitable constraints relevant to
required machining quality, required kerfing depth, and available resources, the model was applied to test cases based on
experimental results. 相似文献
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数控加工工艺规划创成过程的研究 总被引:1,自引:0,他引:1
乐光学 《组合机床与自动化加工技术》2001,(8):16-19
通过对数控加工工艺特性的理论分析和研究,建立了基于数控加工基元CNC-ME(CNC Manufacturing-element)与数控加工工艺基元CNC-WE(CNC Work-element)的创成式CAPP系统中具有层次化结构的数控工艺决策模型,阐述了数控加工工艺决策过程中正向离散和反向集中的原理及工步、工序优先级工艺路线生成的原则。 相似文献
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论述了电解加工中参数数据库的功能,设计要点和编程方法,该系统在Windows平台下,以Visual Basic6.0为开发工具,界面友好,操作方便,可满足电解加工的基本应用。 相似文献