共查询到19条相似文献,搜索用时 93 毫秒
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分析了整体叶轮模型特点,通过对UG进行二次开发,整合了整体叶轮三坐标测量规划的全过程,构造了叶面测量点,并利用碰撞检测等方法建立了无干涉测量路径,对测量路径的规划与修正进行了阐述,并对测量过程进行了实时仿真,以验证路径的可行性。 相似文献
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整体叶轮是其中一项关键的技术零件,通过整体叶轮在燃气发动机中的工作,可以把机械能转化为气体的使能。本文中具体的介绍了整体叶轮设计制造的系统规划过程,其次分析了整体叶轮如何去构建CAD模型,并详细的分析了叶轮制造过程中的数控加工过程,最后对整体叶轮中最关键的零部件叶片部位的加工过程进行了详细的研究分析。 相似文献
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张少杰 《机械工程与自动化》2013,(4):179-181
论述了高速加工编程和普通加工编程的区别以及高速加工的编程策略,并分析了PowerMill数控编程的基本步骤。根据实际工程数据,在分析整体叶轮建模的基础上,利用Pro/E软件实现了整体叶轮的建模;然后在PowerMill环境下分析和研究了整体叶轮的走刀路径,并对其进行模拟加工仿真;最后,在PowerMill环境下实现了整体叶轮的高速加工编程,为高速加工编程提供参考。 相似文献
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系统介绍了类叶轮的整体加工分析、五轴加工工艺规划以及对机床的选用、工装夹具的选择、刀具的选择、CAD/CAM软件的确定和加工工艺的规划等,并对这些进行了深入的研究和分析。提出了解决类叶轮整体加工难点的解决办法,并利用ESPRIT自带的数控仿真功能,对该类叶轮进行了可靠性的虚拟仿真与验证。最后,在DMU50五轴加工中心上完成了对类叶轮的整体实际加工,与预期一致,没有出现刀具干涉与碰撞现象,产品质量达到了要求,该加工方法对相似的类叶轮加工提供了借鉴作用。 相似文献
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对整体叶轮轮毂面的刀位轨迹排布进行了研究.首先运用分层的思想和旋转法得到均布于等长叶片叶轮轮毂面上的刀位轨迹;并在其基础上采用区域划分法对交错叶片叶轮轮毂曲面的刀位进行规划,得到C1连续的刀位轨迹. 相似文献
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带冠整体叶轮代表了未来整体叶轮结构设计的重要发展方向,带冠整体叶轮的加工是现代制造领域的难点之一。本文结合某型带冠整体叶轮的加工试验,对组合电加工方案的关键工艺进行了分析,并重点讨论了电解加工叶轮预通道的阴极设计及其运动轨迹的确定,以及电火花加工中的成形电极设计和进给轨迹设计等问题。 相似文献
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Tool path generation is an important step of five-axis NC milling which plays an important role in parametric surfaces and free-form surfaces manufacturing. Cutter contacting (CC) point calculation is considered as a basic procedure of tool path generation. The step lengths formed by cutter contacting points have an effect on the chord error along feed direction. In traditional calculation method for CC point discretization, the segments connected by adjacent CC points distribute on both sides of the theoretical tool path curve. This situation magnifies the cutting error to some extent and enlarges the expected margin if the surface demands polishing or grinding. Aiming at this issue, this paper proposes an improved constant chord error method for CC point calculation. In the proposed method, the CC points lay on the theoretical tool path curve when the tool path curve is concave and lay on the chord error offset curve when is convex, which ensures the segments connected by the adjacent CC points distribute on one side of design surface, the side of the scallop height between tool paths. Therefore, the actual margin of polishing or grinding can be reduced. The influence of inflection points is also considered in this method to avoid accuracy deterioration caused by the long steps occurring near the inflection points. In part processing, local gouging and global collision must be avoided in tool orientation determination. This paper analyzes tool orientations with no rear gouging and no collision based on the calculated CC points. The novel discretization method for CC points is calculated on a single blade model, and the tool orientations are generated on an open integral impeller. A DMG DMU50 machine tool and a Hexagon three coordinates measuring machine are applied for experiments and measurements. The results show that, the CC point discretization method proposed in this paper offers many advantages over the traditional constant chord error method and commercial software, such as quantity of points, curve fitting, no overcut, and residual margin distributing. At last, blade and tunnel of the open integral impeller with safety tool orientation is machined and verified on the DMG DMU50 machine tool. 相似文献
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讨论了整体叶轮这一典型复杂零件的CAD/CAM技术问题.通过对整体叶轮加工工艺的分析,利用UG软件实现了叶轮的建模与五轴编程,解决了叶轮CAD/CAM过程中的诸多关键技术问题,在MIKRON UCP710高速加工中心上成功地加工出了合格的整体叶轮. 相似文献
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