共查询到18条相似文献,搜索用时 755 毫秒
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落料是钣金加工的首道工序,应用先进的技术手段进行落料后的品质管理是避免批量报废、节省质检人员开销、提高工作效率的有效途径。智能平面检测仪适用于数控冲床、激光切割机、等离子切割机、水射流切割机、普通冲床等设备生产的二维钣金零件智能快速检测,并具有全尺寸检测与拼接、工程逆向、打印检测报告等功能。 相似文献
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现代板材加工数控冲床具有精度要求高、高速度、高加速度等特点,冲床X-Y平台的运动受负载扰动、非线性振动和摩擦等因素的影响是一个典型的非线性系统.文章以伺服系统和数控冲床X-Y平台为控制对象,研究了平台的传动机构和运动特性.运用机理建模的方法,建立了对象的数学模型,同时给出一种内模控制器的设计方法及其鲁棒性设计.仿真和实验结果表明,此控制方法具有良好的跟踪性能和抗干扰性能. 相似文献
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基于高速精密冲床的热态特性,对高速精密冲床进行了热源分析与传热机制分析,计算了冲床的热分析的初始条件及边界条件,利用SolidWorks软件建立冲床整机的有限元模型,运用ANSYS软件对冲床进行热-结构耦合分析,求解出该高速冲床处于稳态环境下的整机的温度场和变形场,分析出冲床的加工误差.对比红外热像仪测得的实际冲床温度值,验证了温度场仿真分析结果的可靠性,为冲床的结构优化设计和热平衡设计提供理论依据. 相似文献
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在20世纪90年代初。以日本几家主流冲床制造厂家率先推出了小型伺服冲床。这对传统的机械式冲压方式掀起了旋风般的冲击,被广泛认为是锻压制造业的一场技术大革命,有着划时代的意义和里程碑的作用。 相似文献
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重卡车架纵梁普遍采用数控冲孔机冲孔,数控冲孔机以其柔性强、自动化程度高、设备性能稳定、加工精度高、加工效率高等优势在行业得到了广泛应用[1]。目前中国重汽卡车公司有四台数控冲孔机,实现不同车型纵梁孔加工。但是,随着新产品推出,纵梁上出现了若干异型孔,超出了原有冲孔机加工范围。围绕着在数控冲机加工纵梁异型孔,工程技术人员进行了大量的探索和研究,最终问题得以解决。 相似文献
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通过分析基于PC的传统开放式数控系统的缺陷,提出一种基于高实时性、多任务的嵌入式操作系统WinCE7和CORTEXA8微处理器的数控转塔冲床数控系统,WinCE7操作系统是一个紧凑高效的模块化操作系统,配合CORTEXA8微处理器能满足数控转塔冲床对实时控制的要求。分析了计算机与数控机床之间通信方式的发展趋势和对机床加工高效化、自动化的影响,提出基于WiFi的数控转塔冲床无线通信解决方案。实验结果表明:WiFi模块工作正常,能实现上位机与嵌入式控制器之间的数据收发,降低了成本,提高了效率。 相似文献
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对传动轴方孔加工工艺进行分析,介绍了采用冲方加工传动轴方孔,同时介绍了模具结构及模具的工作过程,给出了冲方凸模和凸模座的设计方法,并对生产中出现的冲方凸模使用寿命较低和冲方后方孔的表面粗糙度达不到产品图的要求等问题,提出了改进措施。改进后,不仅冲方凸模的使用寿命大大提高,而且冲方后方孔的表面粗糙度完全达到产品图的要求。 相似文献
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棒料精密剪切模设计与制造 总被引:1,自引:1,他引:0
介绍了用在冲床上的一种双件精密剪切模的结构、工作过程和设计制造要点 ,并给出了实用的模具结构。该剪切模剪切效率高 ,剪切质量好 ,模具成本低 相似文献
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《Journal of Materials Processing Technology》2014,214(4):936-944
A method for maintaining lubrication in the backward extrusion of deep holes for lightweight structural components is proposed utilizing a servo press and a punch with an internal channel for liquid lubricant supply. In this forming method, the punch is pushed into the specimen with a servo press in a manner that combines pulsed and stepwise modes. Sufficient liquid lubricant is periodically supplied to the deformation zone through the internal channel upon the retreat of the punch. This forming method with pulse punch ram motion was tested in combined forward-backward extrusion process with a high aspect ratio (height/diameter) in this study. The material flow of the aluminum specimen during the extrusion with pulse punch ram motion was investigated to determine the coefficient of shear friction at the specimen–punch interface. The punch wear was assessed by a finite element analysis of the material flow of the specimen during the extrusion with pulse punch ram motion. 相似文献
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Ryo Matsumoto Jae-Yeol Jeon Hiroshi Utsunomiya 《Journal of Materials Processing Technology》2013,213(5):770-778
A method for keeping lubrication in the backward extrusion of deep holes for lightweight structural components is proposed utilizing a servo press and a punch with an internal channel for liquid lubricant supply. The punch is pushed into the specimen with a servo press in a manner that combines pulsed and stepwise modes. Sufficient liquid lubricant is periodically supplied to the deformation zone through the internal channel upon the retreat of the punch. The appropriate punch motions for prevention of galling of the formed hole for extrusion ratios in the range 1.07–1.80 were determined in the proposed forming method using a servo press. Furthermore, the proposed method was found to produce the formed holes with high shape accuracy. The shape accuracy of the formed hole is discussed with experimental and finite element simulation results in terms of lubrication state and temperature change. 相似文献
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To prevent galling in backward extrusion of deep holes, an extrusion method utilizing a servo press and a punch having an internal channel for supplying liquid lubricant is proposed. On the servo press, the punch is pushed into the billet in a manner combining pulsed and stepwise modes. The lubricant is sucked into the formed hole through the internal channel during the retreat motion of the punch. Appropriate punch ram motions for preventing galling are determined from the surface observation of the formed hole. The maximum aspect ratio of the hole attained by the proposed method is discussed. 相似文献