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覆膜陶瓷粉末激光烧结成形技术试验研究 总被引:5,自引:0,他引:5
介绍覆膜陶瓷粉末激光烧结成形技术的基本原理。利用变长线激光烧结快速成形机对覆膜陶瓷粉末进行了烧结成形试验,研究了激光功率、扫描速度、预热温度、激光线束长度等工艺参数对烧结成形性能的影响。 相似文献
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针对LOM快速成形机存在的火灾隐患,对其防火报警系统进行了研究,研制出了一套LOM快速成形机火灾报警系统。采用紫外火焰传感器作为火灾检测的传感元件,系统不但具有声光显示、报警的功能,而且还具有传感器自检、与快速成形机的控制计算机进行通讯等功能;通过采用看门狗技术、软件去抖滤波技术以及硬件滤波等技术大大地提高了系统的可靠性;根据火灾信号特点,采用模糊神经网络自动生成隶属函数和提取模糊规则,可明显提高火灾探测的灵活性和准确性,降低了火灾报警的误报率,实际使用表明该系统的火灾报警率达到100%。 相似文献
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首先以快速成形机为模型分析了单机运动控制系统的结构,然后在分析了Internet远程运动控制可行性的基础上,设计了基于Web的远程运动控制系统,通过网络和数据封装技术,结合网页设计,实现了对快速成形机的远程数据采集和控制。 相似文献
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基于PC总线的快速成形机高精度CNC系统 总被引:1,自引:0,他引:1
详细介绍了基于PC总线的高精度快速成形机CNA系统。该系统结合世界先进的快速成形技术特点,根据开放性体系结构设计思想而完成,具有市场竞争力。系统的开发成功,为快速成形模型建立提供了先决条件。 相似文献
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介绍了新软件的结构体系和主要功能,详细阐述了基于VC平台的SLS快速成形机软件系统的开发过程,并对软件开发中的若干技术问题进行了探讨. 相似文献
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介绍了快速成形加工中常用的SLC数据模型的构成,提出了SLC数据模型下快速成形扫描路径的生成算法以及数据点的排序方法。采用VC++编程实现了扫描路径的生成,并通过风机叶片和车标模型两个实例,分析了扫描路径生成过程中零件切层厚度、扫描间距对扫描路径长度的影响。 相似文献
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对SLS快速成形系统XY直线导轨高速扫描进给的动态轨迹误差进行研究 ,分析产生误差的原因 ,基于MATLAB的仿真计算方法 ,给出激光扫描运动在不同进给速度下的动态轨迹误差的仿真建模和计算方法。仿真结果表明 ,SLS快速成形XY直线导轨扫描的动态轨迹误差所引起的工件成形误差是不可忽略的因素 相似文献
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Jun Xie Shuhuai Huang Zhengcheng Duan 《The International Journal of Advanced Manufacturing Technology》2005,26(11-12):1348-1352
The laser galvanometric scanning technique has brought rapid prototyping manufacturing into a new era. However, a number of errors severely affect the prototyping accuracy of the work piece. This paper gives a detailed analysis of the errors involved in the galvanometric scanning system used in rapid prototyping manufacturing. A positional correction algorithm has been developed to rectify the errors to meet the precision requirements of the processing. Experimental results based on a selective laser stinting (SLS) machine prove the efficiency of the positional correction algorithm. 相似文献
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Daosheng Cai Yusheng Shi Lichao Zhang Shuhuai Huang 《The International Journal of Advanced Manufacturing Technology》2007,33(7-8):738-745
The hollowing process plays an important role in some rapid prototyping technologies such as stereo lithography apparatus
(SLA), fused deposition modelling (FDM) and select laser sintering (SLS). This paper introduces an efficient two-dimensional
hollowing algorithm. The principles of algorithm and implementation are presented. In addition, a detailed analysis is used
to study the effect of the scanning path and online character in the actual fabricating process. 相似文献
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介绍了快速成形加工中常用的SLC文件的格式,分析了SLC文件的数据存储结构和特点。研究了SLC数据的读取方式,采用奇偶规则判断交点是否在轮廓区域内,区分了扫描线的虚实特性,并对轮廓垂直或重合于扫描线、极值点和凹拐点这几种特殊情况进行了讨论。最后生成了风力机叶片以及齿轮模型的扫描路径,证实了算法的有效性。 相似文献
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X. Ye X. Chen X. Li S. Huang 《The International Journal of Advanced Manufacturing Technology》2002,20(1):39-43
A cross-coupled path precompensation (CCPP) algorithm for a rapid prototyping and manufacturing (RPM) system is proposed in
this paper in order to reduce the contour error resulting from the dynamic track error in the position control of the RPM
system. The input of the CCPP plant is generated by a software interpolator, and the output is the compensated feedrate of
the biaxial system. The precompensation amount is computed according to track errors that are estimated by mathematical models
of each servo mechanism and the tangent angle at the desired point along the prespecified path. The new point acquired by
the precompensation method is located in the normal direction of the original point. Simulation and experiments on the algorithm
along a circular path of 200 mm in diameter are implemented. The experimental results demonstrate the advantage of the algorithm
for RPM systems. 相似文献
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Tong-Jin Park Jung-Woo Ahn Chang-Soo Han 《Journal of Mechanical Science and Technology》2002,16(2):137-146
In this paper, a path generation algorithm that uses sensor scannings is described. A scanning algorithm for recognizing the ambient environment of the Automatic Guided Vehicle (AGV) that uses the information from the sensor platform is proposed. An algorithm for computing the real path and obstacle length is developed by using a scanning method that controls rotating of the sensors on the platform. The AGV can recognize the given path by adopting this algorithm. As the AGV with two-wheel drive constitute a nonholonomic system, a linearized kinematic model is applied to the AGV motor control, An optimal controller is designed for tracking the reference path which is generated by recognizing the path pattern. Based on experimental results, the proposed algorithm that uses scanning with a sensor platform employing only a small number of sensors and a low cost controller for the AGV is shown to be adequate for path generation. 相似文献
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对FDM快速成型工艺的填充轨迹进行了分析,提出了在Z方向采用混合填充的算法:基于AutoCAD二次开发工具ObjectARX和VC++6.0开发平台实现平行线和轮廓线2种填充轨迹在Z方向混合填充.该算法简单有效,可以应用于扩展或开发快速成型机中. 相似文献