共查询到20条相似文献,搜索用时 250 毫秒
1.
渐开线花键冷槎成形工艺是一种精密塑性成形加工工艺.为探索齿条形刀具的角度的变化对渐开线花键成形结果的影响,采用ANSYS软件,基于北方易初和洛阳工学院合作已经研制成功的搓挤摩托车曲柄渐开线花键的齿条形刀具,变更刀具齿形角分别进行成形过程仿真并进行结果分析比较;刀具齿数多,形状复杂且整个研究过程将需要多次进行刀具建模,若在ANSYS中建模则非常费时费力,故选择AutoCADVBA编程实现刀具的参数化绘图造型而后导入ANSYS的方法.每运行一次AutoCADVBA宏程序,即可方便快捷地得到一把不同的虚拟刀具,大大提高整个研究进程的效率,同时也为类似问题的研究提供了一种有效的参考途径. 相似文献
2.
渐开线花键冷搓成形工艺是一种精密塑性成形加工工艺。为探索齿条形刀具的角度的变化对渐开线花键成形结果的影响,采用ANSYS软件,基于北方易初和洛阳工学院合作已经研制成功的搓挤摩托车曲柄渐开线花键的齿条形刀具,变更刀具齿形角分剐进行成形过程仿真并进行结果分析比较;刀具齿数多,形状复杂且整个研究过程将需要多次进行刀具建模,若在ANSYS中建模则非常费时费力,故选择AutoCADVBA嫡程实现刀具的参数化绘图造型而后导入ANSYS的方法。每运行一次AutoCADVBA宏程序,即可方便快捷地得到一把不同的虚拟刀具。大大提高整个研究进程的效率。同时也为类似问题的研究提供了一种有效的参考途径。 相似文献
3.
4.
介绍在IE -CAM系统中开发的基于特征设计的孔建模方法及在计算机辅助工艺规划中提出的工艺配置优先决策条件和刀具自动检索功能所实现的工序优化配置 ,以实现CAPP的高智能化方法。还介绍了通过建立动态和静态数据库实现从孔的几何模型信息到加工工艺信息的一体化管理方法 相似文献
5.
6.
数控加工中心刀具信息集成技术的研究与开发 总被引:5,自引:2,他引:5
本文研究开发的数控加工中心机床刀具信息集成技术,是一个集成化的管理系统软件,可以实现加工中心模块式组合刀具库的管理、多标准刀具系统刀具及切削参数选择的功能,解决了工艺设计中的自动配刀、刀具管理集成和工艺文件自动输出等问题。 相似文献
7.
模具型腔数控加工计算机辅助刀具选择研究 总被引:3,自引:0,他引:3
自动产生模具型腔加工的工艺计划及数控加工指令对提高模具型腔的加工效率具有重要意义。研究了模具型腔工艺规划中的刀具选择问题,提出了模具型腔粗加工、半精加工、精加工刀具选择的原则与方法,并构造了相应的实现算法;重点研究了粗加工中刀具的组合优化问题,并建立了数学模型;给出了计算机辅助刀具选择系统的体系架构,基于所提方法在UG/OPEN API环境下进行了初步编程实现;以一个包含岛及自由曲面的模具型腔零件的刀具选择为例,说明系统及算法的可行性。 相似文献
8.
9.
10.
11.
在汽车生产制造领域,模具加工技术占有重要的地位,被称为“汽车工业之母”,汽车的发动机和底盘等重要部件都需要相应的模具。从模具加工工艺的改进角度,对部件汽车模具的加工技巧、模具加工过程中刀具的选型要求等加工工艺进行讨论,重点阐述了大型车辆模具加工的技术要求,介绍了模具的质量检测的要求,探究新时期汽车模具加工技术。 相似文献
12.
彭彬 《机电产品开发与创新》2007,20(4):171-172,145
从建模方法的选择、精加工方式(刀路)的选择、加工边界的确定、加工对象的选择和加工范围的限定等多方面,探讨了应用MasterCAM进行自动编程的一些问题和技巧. 相似文献
13.
在机械加工工艺设计中,刀具的选择对加工效果,特别是加工工艺节拍的长短有着决定性的影响作用。而在汽车零部件竞争日益激烈的今天,成本的高低又决定着企业的竞争力和生存能力。通过对刀具的调整,减低汽车底盘支架轴承孔加工工艺节拍。 相似文献
14.
以蛋托模芯零件的模型建立和数控加工为例,介绍了零件基于UG的建模方法、加工参数设置、刀具选用、生成加工轨迹和生成数控代码,确保了数控加工程序的正确性,提高了生产效率。 相似文献
15.
分析了数控自动编程发展动态及现有自动编程系统的优点与不足。研究了以Pro/TOOLKIT为开发工具包开发数控自动编程及仿真系统的模式及体系结构。提出并应用了基于图形特征的提取、自动图形分解、二叉分支定界法优化加工路径算法、加工孔位自动识别及基于造型的加工仿真等实现自动编程及仿真的关键技术。并采用效率高的动态数组及堆结构成功实现数控冲床自动编程及仿真系统。 相似文献
16.
介绍了利用展成加工原理,模拟实际加工过程,实现直齿锥齿轮参数化三维造型的基本思想及具体步骤,为直齿锥齿轮的啮合过程、加工方法、误差分析等提供了强有力的研究工具。 相似文献
17.
S. Jeyakumar K. Marimuthu T. Ramachandran 《Journal of Mechanical Science and Technology》2013,27(9):2813-2822
The results of mathematical modeling and the experimental investigation on the machinability of aluminium (Al6061) silicon carbide particulate (SiCp) metal matrix composite (MMC) during end milling process is analyzed. The machining was difficult to cut the material because of its hardness and wear resistance due to its abrasive nature of reinforcement element. The influence of machining parameters such as spindle speed, feed rate, depth of cut and nose radius on the cutting force has been investigated. The influence of the length of machining on the tool wear and the machining parameters on the surface finish criteria have been determined through the response surface methodology (RSM) prediction model. The prediction model is also used to determine the combined effect of machining parameters on the cutting force, tool wear and surface roughness. The results of the model were compared with the experimental results and found to be good agreement with them. The results of prediction model help in the selection of process parameters to reduce the cutting force, tool wear and surface roughness, which ensures quality of milling processes. 相似文献
18.
The progressive cutting based on auxiliary paths is an effective machining method for the material accumulating region inside the mould pocket. But the method is commonly based on the radial depth of cut as the control parameter, further more there is no more appropriate adjustment and control approach. The end-users often fail to set the parameter correctly, which leads to excessive tool load in the process of actual machining. In order to make more reasonable control of the machining load and tool-path, an engagement angle modeling method for multiple-circle continuous machining is presented. The distribution mode of multiple circles, dynamic changing process of engagement angle, extreme and average value of engagement angle are carefully considered. Based on the engagement angle model, numerous application techniques for mould pocket machining are presented, involving the calculation of the milling force in multiple-circle continuous machining, and rough and finish machining path planning and load control for the material accumulating region inside the pocket, and other aspects. Simulation and actual machining experiments show that the engagement angle modeling method for multiple-circle continuous machining is correct and reliable, and the related numerous application techniques for pocket machining are feasible and effective. The proposed research contributes to the analysis and control tool load effectively and tool-path planning reasonably for the material accumulating region inside the mould pocket. 相似文献
19.
Process modeling and toolpath optimization for five-axis ball-end milling based on tool motion analysis 总被引:2,自引:2,他引:0
Liqiang Zhang 《The International Journal of Advanced Manufacturing Technology》2011,57(9-12):905-916
In free-form surface machining, the prediction of five-axis ball-end milling forces is quite a challenge due to difficulties of determining the underformed chip thickness and engaged cutting edge. Part and tool deflections under high cutting forces may result in poor part quality. To solve these concerns, this paper presents process modeling and optimization method for five-axis milling based on tool motion analysis. The method selected for geometric stock modeling is the dexel approach, and the extracted cutter workpiece engagements are used as input to a force prediction. The cutter entry?Cexit angles and depth of cuts are found and used to calculate the instantaneous cutting forces. The process is optimized by varying the feed as the tool?Cworkpiece engagements vary along the toolpath, and the unified model provides a powerful tool for analyzing five-axis milling. The new feedrate profiles are shown to considerably reduce the machining time while avoiding process faults. 相似文献
20.
通过汽车滤清器盖顶的实际加工例子,介绍小批量产品的数控加工工艺设计;还对此薄壁件的加工设计了专用夹具,这样更能保证加工精度及其稳定性,同时也提高了加工效率. 相似文献