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Development of CAD/CAM system and profile measuring device for CNC grinding machine to obtain an optimal grinding speed 被引量:2
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作者 LIM Sang-Heon KIM Jae-Hyun LEE Choon-Man 《Journal of Central South University》 SCIE EI CAS 2011年第1期146-152,共7页
Cam mechanics is one of the most popular devices for generating irregular motions and is widely used in automatic equipment,such as textile machines,internal combustion engines,and other automatic devices.In order to ... Cam mechanics is one of the most popular devices for generating irregular motions and is widely used in automatic equipment,such as textile machines,internal combustion engines,and other automatic devices.In order to obtain a positive motion from the follower using a rotating cam,its shape should be correctly designed and manufactured.The development of an adequate CAD/CAM system for a cam profile CNC grinding machine is necessary to manufacture high-precision cams.The purpose of this study is the development of a CAD/CAM system and profile measuring device for a CNC grinding machine to obtain an optimal grinding speed with a constant surface roughness.Three types of disk cams were manufactured using the proposed algorithm and procedures to verify effectiveness of the developed CAD/CAM system. 展开更多
关键词 CAM CAD/CAM system cnc grinding machine optimal grinding speed
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Research on the Monitoring System of CNC Grinding Process Based on Acoustic Emission
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作者 HU Zhongxiang1,TENG Jiaxu1,YANG Junwei1,HUO Xiaojing2,SHI Xiaojun1 (1.National Key Laboratory for Remanufacturing,Beijing 100072,China 2.M&E Engineering College of Hebei Agricultural University,Baoding 071001,China) 《武汉理工大学学报》 CAS CSCD 北大核心 2006年第S1期310-313,共4页
Using on-line monitoring during the CNC grinding process,the hazard case such as the crushing of grinding wheel and various safety accidents could be avoided,and the optimum time for dressing and replacing grinding wh... Using on-line monitoring during the CNC grinding process,the hazard case such as the crushing of grinding wheel and various safety accidents could be avoided,and the optimum time for dressing and replacing grinding wheel could also be determined,and hence,the service life of the grinding wheel could be prolonged and grinding quality could be improved. To overcome the limitation of some traditional techniques in which some parameters including the grinding power and force,torque and so on were monitored,the acoustic emission (AE) technique,which provides high sensitivity and responding speed,were developed in the present paper. The mechanism of AE during grinding was reviewed. Moreover,a virtual AE monitoring system,which could monitor the grinding state under different working conditions during the grinding,has been developed based on the Virtual Instruments technique. Some experiments were also performed on the internal grinder. The results showed that the AE signals became stronger with increasing the main shaft speed and grinding depth or decreasing the distance between the AE sensor and grinding area. 展开更多
关键词 ON-LINE monitoring virtual INSTRUMENTS cnc grinding ACOUSTIC EMISSION
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Study of CNC Grinding Machining Method About Isometric Polygon Profile
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作者 WANG De-sheng, ZHOU Ai-ping, YUAN Yan-ling (Dept. of Mech. Eng. of JIT, Jiaozuo 454000, China) 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期60-61,共2页
The formed principle and CNC grinding machining method of isometric polygonal profile are studied deeply and systematically. Equation about section curve of isometric polygon profile is set up by means of geometric pr... The formed principle and CNC grinding machining method of isometric polygonal profile are studied deeply and systematically. Equation about section curve of isometric polygon profile is set up by means of geometric principle. With the use of differential geometry theory, the curve is proved to be with geometric feature of convex curve. It is referred to as Isometric Polygonal Curve (IPC), because that is a kind of convex curve on which the distance between any parallel tangent lines is equal. Isometric Polygonal Profile (IPP) or Isometric Polygonal Cone Profile (IPCP) or Isometric Polygonal Topless Cone (IPTC) is formed with the IPC and straight line as generating curve. But the machining and measuring of the IPCP are so inconvenient that it has little value. Keeping in mind the characteristic of the IPP and IPTC, this paper puts forward the program method of CNC grinding machining. Isometric polygonal profile connection is a kind of polygonal profile connection. It has the superiority over keys (prismatic key & spline etc), and can be suit for the situations such as high rotative velocity, large torque, high precision, and small fixed room and vibration. Nowadays, some countries such as America, Russia, German and Switzerland applied CNC machining to the machining of polygon surface coupling parts, which makes their applications in machine productions such as motor engine, heavy machine increase day by day. But reports about concrete machining technology of isometric polygonal profile and programming of CNC machining program are very few. CNC grinding of the IPP and IPTC is one kind of the precision machining technology. It is of great importance to the popularization of the IPP and IPTC connection. From the forming mechanism, we can see that the machining and measuring of the IPP and IPTC are convenient, and therefore they have the value of the popularization. But the machining and measuring of the IPCP are so inconvenient that it has little value. In the programming the CNC grinding of the IPP and IPTC, it is more reasonable to calculate the coordinate of node according to the approaching method of equal error arc. According to the method of CNC grinding mentioned above to design the grinding machine, the structure is simple and of economical and practical. 展开更多
关键词 Isometric Polygonal Profile Isometric Polygonal Topless Cone cnc grinding machining
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Research on CNC Turning System of Aspheric Machining Grinding Wheel
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作者 ZOUQin GUOYin-biao 《Journal of China University of Mining and Technology》 2005年第1期64-67,共4页
The technology of machining aspheric surface with high precision is the premise for the application of aspheric surface. The grinding machining with error compensation is a commonly used method to machine aspheric sur... The technology of machining aspheric surface with high precision is the premise for the application of aspheric surface. The grinding machining with error compensation is a commonly used method to machine aspheric surface, which will directly influence the quality of aspheric workpiece surface. Multifunctional CNC grinding wheel truing system is a four-axis CNC truing system which can be applied to grinding wheel truing. In this system, DSP-based multi-axes motion control card is adopted as the controller, and visual C++ is used as development tool. When the design of hardware and software is completed, the system can implement truing of various grinding wheel with high precision aspheric machining such as plane grinding wheel, arc grinding one, and sphere grinding one. 展开更多
关键词 aspheric machining grinding wheel cnc system truing
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Cam Profile Grinding CNC System Based on Open Architecture
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作者 GONG Shi-hua, DUAN Zheng-cheng, ZHU Guo-liCollege of Mechanical Science and Engineering, HuazhongUniversity of Science and Technology, Wuhan 430074,P.R.China 《International Journal of Plant Engineering and Management》 2002年第2期82-92,共11页
This paper studies some key technologies of CNC system for cam grinding. The mathematical motion model for cam grinding is established according to the harmony of reciprocating motion of the grinding wheel and the rot... This paper studies some key technologies of CNC system for cam grinding. The mathematical motion model for cam grinding is established according to the harmony of reciprocating motion of the grinding wheel and the rotating motion of the workpiece. The method of using the linear servomotor to accomplish the grinding wheel tracking is developed and the dynamic model of the system is analyzed. Then the cross-coupled biaxial error compensation model is proposed. Finally, the hardware and software of the control system are designed based on open architecture. Some algorithms , such as spline fitting and interpolation for cam contour, velocity control and feed control, are presented to improve grinding precision. 展开更多
关键词 cam grinding cnc system mathematical model for motion error compensation.
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A Generic Kinematic Model for Three Main Types of Five-axis Machine Tools 被引量:1
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作者 YU Yang WEI Sheng-min +1 位作者 LIU Ping AO Zhi-qiang 《International Journal of Plant Engineering and Management》 2009年第4期243-249,共7页
Material removal is one of the most used processes in manufacturing. Five-axis CNC machines are believed to be the best tools in sculptured surface machining. In this study, a generic and unified kinematic model was d... Material removal is one of the most used processes in manufacturing. Five-axis CNC machines are believed to be the best tools in sculptured surface machining. In this study, a generic and unified kinematic model was developed as a viable alternative to the particular solutions that are only applicable to individual machine configurations. This versatile model is then used to verify the feasibility of the two rotational joints within the kinematic chain of three main types of a five-axis machine-tool. This versatile model is very useful applied to the design of five-axis machine tools. 展开更多
关键词 cnc machining of sculptured surfaces five-axis machine tool configuration kinematic model transformation matrix
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YK 7425 GEAR GRINDING MACHINE
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《China's Foreign Trade》 1996年第11期61-61,共1页
This is a newly developed product,CNC gear grinding machine basedon original Y 7125 A large planargear grinding machine, produced by theQinchuan Machine Tool Works. It is chieflyused for grinding the involute tooth pr... This is a newly developed product,CNC gear grinding machine basedon original Y 7125 A large planargear grinding machine, produced by theQinchuan Machine Tool Works. It is chieflyused for grinding the involute tooth profilesof gear-shaping cutters, gear-shaving cuttersand master gears, and is also used for grindinghigh precision spur and helical gears. It issuitable for the departments of the automobiles,tractors, aircraft, machine tools and toolmanufacturing industries. 展开更多
关键词 cnc GEAR YK 7425 GEAR grinding MACHINE
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磨床整机热-力耦合特性建模方法与实验研究
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作者 任利娟 闫伟健 +3 位作者 陈恪 李堃 王琦 张广鹏 《机床与液压》 北大核心 2024年第18期62-67,共6页
针对数控外圆磨床提出一种机床热-机械耦合的整机变形建模仿真方法,以实现磨床整机从加工至达到热平衡过程的热力耦合仿真分析。通过磨床加工中的热载荷和力载荷计算方法分析了力负荷与热负荷的耦合影响规律;对考虑强迫对流和自然对流... 针对数控外圆磨床提出一种机床热-机械耦合的整机变形建模仿真方法,以实现磨床整机从加工至达到热平衡过程的热力耦合仿真分析。通过磨床加工中的热载荷和力载荷计算方法分析了力负荷与热负荷的耦合影响规律;对考虑强迫对流和自然对流的各部件在不同边界条件下进行了分析计算,采用有限元分析了冷却液温度和环境温度对热力耦合变形的影响规律,通过实验测量磨床关键部件在误差敏感方向的温度分布和变形量,测量结果与仿真结果的变形方向一致,且幅值误差小于10%,验证了所建立的整机热-力耦合建模方法的有效性,为加工误差补偿提供理论和技术支持。 展开更多
关键词 数控外圆磨床 整机热特性 热-力耦合建模 温升 热变形
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面向可配置复合磨削中心的监控系统设计与实现
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作者 沈南燕 施惠恩 +1 位作者 李静 饶彦博 《工业控制计算机》 2024年第7期69-70,共2页
智能制造的大环境不断推动先进制造装备和信息通信技术的进一步融合,面向可配置复合磨削中心,设计开发监控系统实现对复合磨削中心加工状态的监控功能。针对复合磨削中心可配置的不同数控系统,标准化封装其通信接口;同时,设计开发基于C/... 智能制造的大环境不断推动先进制造装备和信息通信技术的进一步融合,面向可配置复合磨削中心,设计开发监控系统实现对复合磨削中心加工状态的监控功能。针对复合磨削中心可配置的不同数控系统,标准化封装其通信接口;同时,设计开发基于C/S架构的监控系统,实时读写接口数据,达到监测复合磨削中心加工状态的目的。 展开更多
关键词 复合磨削中心 数控系统 实时监控 标准化
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螺纹磨床CNC砂轮修整器设计与修型方法研究 被引量:13
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作者 李志峰 赵永强 +3 位作者 魏伟锋 侯红玲 赵甲宝 周斌 《制造技术与机床》 CSCD 北大核心 2012年第2期111-113,共3页
CNC砂轮修型的初始修型是砂轮修整的关键,本文以SK7450螺纹磨床CNC砂轮修整器为例,分析并介绍一种新的砂轮修型方法。该方法操作简便,适应面广。
关键词 螺纹磨床 cnc砂轮修整器 砂轮修型
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转子磨床CNC砂轮修整器的砂轮初始修形方法研究 被引量:12
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作者 赵永强 李志峰 +3 位作者 魏伟锋 侯红玲 赵甲宝 周斌 《制造技术与机床》 CSCD 北大核心 2012年第6期185-187,共3页
采用CNC砂轮修整器使复杂螺旋面工件的精密磨削成为可能,利用CNC砂轮修整器对新砂轮进行初始修形是砂轮修整的关键步骤。提出了3种砂轮的初始修形方法,对比了各自的优缺点,为CNC砂轮修整器的初始设计提供了理论基础,为用户实际加工提供... 采用CNC砂轮修整器使复杂螺旋面工件的精密磨削成为可能,利用CNC砂轮修整器对新砂轮进行初始修形是砂轮修整的关键步骤。提出了3种砂轮的初始修形方法,对比了各自的优缺点,为CNC砂轮修整器的初始设计提供了理论基础,为用户实际加工提供了操作依据。 展开更多
关键词 螺纹磨床 cnc砂轮修整器 砂轮修形
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齿轮成型铣刀的数控磨削砂轮轨迹算法研究
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作者 徐娜 石致远 +2 位作者 李启元 郭旭阳 江磊 《工具技术》 北大核心 2024年第8期84-90,共7页
加工齿轮成型铣刀时,易出现砂轮磨损、干涉等问题,增加了制造难度。针对齿轮铣刀精密制造需求,提出一种齿轮成型铣刀磨削轨迹算法。定义齿轮成型铣刀前刀面、顶后刀面、内后刀面、外后刀面的结构参数,构建了4个坐标系并分析了相应的转... 加工齿轮成型铣刀时,易出现砂轮磨损、干涉等问题,增加了制造难度。针对齿轮铣刀精密制造需求,提出一种齿轮成型铣刀磨削轨迹算法。定义齿轮成型铣刀前刀面、顶后刀面、内后刀面、外后刀面的结构参数,构建了4个坐标系并分析了相应的转换矩阵,建立前刀面直线刃线、内切刃线、外切刃线的参数化数学模型;考虑齿轮成型铣刀的内外切齿的分布情况,针对不同的磨削工艺选用适应的砂轮进行加工,采用坐标变换矩阵描述砂轮运动方式,借助运动学原理推导了基于工件坐标系的砂轮磨削位姿的计算方法。基于VC++环境开发了相应的算法并进行仿真加工和实际加工,以验证所提算法的有效性。 展开更多
关键词 齿轮成型铣刀 数控磨削 砂轮轨迹 算法
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多轴CNC机床运动优化磨齿拓扑修形面齿轮 被引量:7
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作者 沈云波 扶碧波 刘玄 《计算机集成制造系统》 EI CSCD 北大核心 2017年第2期285-292,共8页
为了求解利用碟形砂轮磨齿加工拓扑修形面齿轮CNC数控机床各轴运动参数的问题,提出一种数控机床各轴运动参数的优化求解方法。依据多轴CNC机床碟形砂轮磨齿加工各轴的运动关系,建立了多轴机床磨齿实际拓扑齿面的数学模型;将机床各轴运... 为了求解利用碟形砂轮磨齿加工拓扑修形面齿轮CNC数控机床各轴运动参数的问题,提出一种数控机床各轴运动参数的优化求解方法。依据多轴CNC机床碟形砂轮磨齿加工各轴的运动关系,建立了多轴机床磨齿实际拓扑齿面的数学模型;将机床各轴运动表示为联系参数的6阶多项式函数,以各轴运动函数的多项式系数为优化参数,并以齿面目标偏差与实际偏差的误差最小作为评价函数,建立了各轴运动参数的优化模型;利用迭代最小二乘法对模型进行求解,获得加工拓扑修形齿面各轴的运动规律。通过拓扑修形面齿轮加工优化仿真和磨齿试验,实现了高精度拓扑修形面齿轮的数控磨齿,验证了各轴运动参数优化求解的正确性。 展开更多
关键词 运动参数优化 面齿轮 拓扑修形 碟形砂轮 cnc机床
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基于FAGOR CNC8070数控系统的砂轮摆动磨削实现 被引量:1
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作者 付晓燕 张国海 +1 位作者 屈丹 姚博世 《制造技术与机床》 北大核心 2013年第4期147-149,共3页
采用FAGOR CNC8070数控系统对2MZK7150全自动可转位刀片周边磨床进行摆动磨削控制,从摆动磨削的工艺流程、CNC侧的参数设置、PLC编程、NC编程4个方面阐述了摆动磨削的方法。实践证明,该系统简便、可靠地实现了砂轮摆动磨削功能,而且改... 采用FAGOR CNC8070数控系统对2MZK7150全自动可转位刀片周边磨床进行摆动磨削控制,从摆动磨削的工艺流程、CNC侧的参数设置、PLC编程、NC编程4个方面阐述了摆动磨削的方法。实践证明,该系统简便、可靠地实现了砂轮摆动磨削功能,而且改善了磨削刀片周边的表面粗糙度和直线度。与传统实现摆动功能的方法相比较,该方法大大提高了刀片磨床的柔性、简化了机床的机械结构,具有系统编程简单、精度高、参数调整简单方便、运行稳定可靠等特点,有很好的实用价值。 展开更多
关键词 刀片磨床 周边磨削 摆动磨削 FAGOR cnc 8070 PLC
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摆线轮齿廓曲线 CNC 成形磨削机理 被引量:4
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作者 张德泉 李真 +2 位作者 曹克伟 郎维环 李宝田 《天津大学学报》 EI CAS CSCD 1998年第4期454-458,共5页
根据摆线轮齿廓曲线的生成原理,建立了与齿廓曲线共轭的修整滚轮运动轨迹的数学模型.通过CNC技术控制砂轮修整器及精密分度机构,实现了摆线轮齿廓成形磨削的新技术.
关键词 摆线轮 数学模 cnc 成形磨削 齿廓曲线
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非球面数控磨床热误差建模分析与补偿研究 被引量:1
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作者 胡月 李欣 刘树伟 《机械设计与制造》 北大核心 2024年第10期183-186,197,共5页
文献调研了占比(40~70)%的热误差是影响数控机床加工精度的最主要因素,探讨了研究对象非球面数控磨床的结构特征,分析了非球面数控磨床热误差存在的基本形式,提出了基于统计学理论的多元线性回归模型算法进行热误差建模的具体方案,针对... 文献调研了占比(40~70)%的热误差是影响数控机床加工精度的最主要因素,探讨了研究对象非球面数控磨床的结构特征,分析了非球面数控磨床热误差存在的基本形式,提出了基于统计学理论的多元线性回归模型算法进行热误差建模的具体方案,针对非球面数控磨床磨轮轴轴向热误差进行了多元线性回归建模,并构建了热误差补偿系统,实验表明,研究的基于多元线性回归模型算法和热误差补偿系统可以有效的实施非球面数控磨床磨轮轴轴向热误差补偿,补偿后残差方差降至4.216e-002,可以满足非球面数控磨床精密磨削需求。 展开更多
关键词 热误差 非球面数控磨床 磨轮轴 多元线性回归建模 误差补偿
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五轴数控工具磨床制程能力与过程能力的定量评价研究 被引量:1
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作者 黄毅 《工具技术》 北大核心 2024年第1期49-53,共5页
为考察五轴数控工具磨床的制程能力,选用两种不同品牌的五轴数控工具磨床加工硬质合金球头立铣刀,测量了立铣刀球头的曲率、刀具球头与圆柱部分衔接处的刃口崩边大小和砂轮磨痕间距来定量评价磨床加工复杂刀具的能力(即制程能力);通过... 为考察五轴数控工具磨床的制程能力,选用两种不同品牌的五轴数控工具磨床加工硬质合金球头立铣刀,测量了立铣刀球头的曲率、刀具球头与圆柱部分衔接处的刃口崩边大小和砂轮磨痕间距来定量评价磨床加工复杂刀具的能力(即制程能力);通过过程能力指数C_(p),从刀具跳动、刀刃直径、球头半径R和球头曲率等四个参数评价磨床的过程能力。 展开更多
关键词 五轴数控工具磨床 球头曲率 球头面表面质量 过程能力指数
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CNC磨削加工中砂轮几何工艺参数自动检测的建模
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作者 董明晓 姚斌 郑康平 《金刚石与磨料磨具工程》 CAS 2003年第3期67-68,71,共3页
为了确保CNC工具磨床上用金刚石砂轮磨削工件的精度 ,金刚石砂轮的几何形状和其相对工件的位置要有严格的要求 ,为此本文系统地给出了应用电感式位移传感器对砂轮动态几何形状、砂轮与工件相对位置等工艺参数的自动检测建模方法 ,运用... 为了确保CNC工具磨床上用金刚石砂轮磨削工件的精度 ,金刚石砂轮的几何形状和其相对工件的位置要有严格的要求 ,为此本文系统地给出了应用电感式位移传感器对砂轮动态几何形状、砂轮与工件相对位置等工艺参数的自动检测建模方法 ,运用此方法检测砂轮动态几何参数 。 展开更多
关键词 数控工具磨床 自动检测 电感式位移传感器 砂轮 几何形状 工艺参数 建模
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导弹天线罩CNC修磨机床用户界面设计与应用
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作者 季田 江连会 +1 位作者 盛贤君 康仁科 《机床与液压》 北大核心 2004年第1期8-11,共4页
导弹天线罩CNC修磨机床属于大型薄壁复杂三维曲面硬脆材料磨床 ,用于半精加工后的导弹天线罩内廓形修磨加工 ,保证天线罩电厚度指标达到设计要求。根据修磨机床的使用要求 ,遵循用户界面的设计原则和思想 ,设计了导弹天线罩CNC修磨机床... 导弹天线罩CNC修磨机床属于大型薄壁复杂三维曲面硬脆材料磨床 ,用于半精加工后的导弹天线罩内廓形修磨加工 ,保证天线罩电厚度指标达到设计要求。根据修磨机床的使用要求 ,遵循用户界面的设计原则和思想 ,设计了导弹天线罩CNC修磨机床用户界面。按不同模块的需求用VisualBasic和VisualC ++混合编程 ,组成人机界面窗口。在屏幕上显示出天线罩测量加工的状态信息、修磨机床的各轴坐标、运行中的数控G代码文件等 ,并于内部封装了对其他系统模块的调用。 展开更多
关键词 导弹天线罩 cnc修磨机床 用户界面
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多磨头高效率高精度CNC凸轮轴磨床
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作者 向中凡 戴跃洪 王进戈 《四川工业学院学报》 1996年第4期22-26,共5页
本文较详细地分析了国内外CNC凸轮轴磨床的现状和发展趋势,并在此基础上提出了一种具有新的结构形式的CNC凸轮轴磨床。初步研究表明,该凸轮轴磨床可以解决目前国内研制的CNC凸轮轴磨床存在的效率低、精度低的问题。因此该新... 本文较详细地分析了国内外CNC凸轮轴磨床的现状和发展趋势,并在此基础上提出了一种具有新的结构形式的CNC凸轮轴磨床。初步研究表明,该凸轮轴磨床可以解决目前国内研制的CNC凸轮轴磨床存在的效率低、精度低的问题。因此该新型CNC凸轮轴磨床的研制成功将改变我国对CNC凸轮轴磨床长期依赖进口的局面。 展开更多
关键词 凸轮轴 磨床 加工中心 磨头 精度
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