共查询到20条相似文献,搜索用时 78 毫秒
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王维 《机械设计与制造工程》2011,(7):23-24,27
对零件中曲面的数控加工方法进行了阐述,提出利用3轴2联动数控铣床加工曲面的可行性,结合UG软件说明自动编程的方法和注意事项,最后以实例说明了具体方法和步骤,证明了利用3轴2联动数控铣床加工曲面的可行性。 相似文献
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<正>在汽车模具设计与制造中,存在很多负角曲面需要加工,此类曲面在五轴联动数控铣床上进行加工较为理想,而大型龙门五轴联动数控铣床的市场加工费用约为1000元/小时。利用鼓形刀的特性解决负角加工难题后,在三轴龙门数控铣床上就能实 相似文献
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在汽车模具设计与制造中,存在很多负角曲面加工需求,此类曲面加工需要在五轴联动数控铣床上加工实现较为理想,而大型龙门五轴联动数控铣床,市场加工费用参考标准为1000元/h。现利用鼓形刀的特性解决负角加工难题后,在三轴龙门数控铣床上就能实现一次装夹完成所有曲面的加工,而此类设备市场加工费用参考标准仅为350元/h,大大的节约了制造成本。 相似文献
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简要叙述了对圆锥曲面进行加工过程,通过分析球面铣刀过初现象产生的原因,利用手工编程(参数化编程的方式),实现在三轴联动数控铣床上加工空间曲面。 相似文献
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本文针对五轴联动数控铣床及其应用软件PowerMill的特点,以德马吉HSC75 Liner五轴联动数控铣床为例,详细探讨了五轴联动数控铣床与PowerMill在模具加工中的应用。 相似文献
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《制造技术与机床》编辑部 《制造技术与机床》2007,(4):12-16
桂林机床股份有限公司
在本届机床展会上,桂林机床股份有限公司拿出了最新研制成功的6台高新技术产品,分别是:XK2725/6-5X五轴联动桥式龙门铣床、XK2320/4—5X五轴联动数控龙门铣床、XK2312WT/5X五轴联动数控床身铣床(叶片铣床)、XK715G/3—5X五轴联动数控床身铣床、XK716/2—5X五轴联动数控床身铣床(图7)和XTH7512WD/3卧式加工中心。 相似文献
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根据曲面切削原理控制铣床刀具的运动,从而实现无轴数控模具铣床,通过运用数学的坐标转换,理论分析在五轴数控模具铣床上实现曲面切削加工。 相似文献
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《Wear》1996,199(1):89-99
The effect of tool surface irregularities on the machining rate of the hydrodynamic polishing process is examined in this study. It is proposed that the tool surface irregularities will affect the film thickness or shear stress distribution between the tool and the work surface. Accordingly, the machining rate of this process is affected. Based on the elastohydrodynamic lubrication theorem and the machining mechanism of this process, the relationship between machining rate and tool surface topography is derived by the statistical analysis. It is shown that the machining rate has a linear relationship with the average variance of tool surface irregularities. The sensitivity of this relationship depends on the average film thickness. A large film thickness will result in a reduction of surface irregularities on machining rate. However, the randomness of machining rate due to the variation of tool surface topography cannot be effectively improved by increasing the film thickness. The experimental study shows that the qualitative and quantitative trends of machining rate verse tool surface irregularities can be well predicted by analytical analysis. 相似文献
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五轴加工刀具路径生成的有效加工域规划方法 总被引:3,自引:0,他引:3
为复杂曲面五轴数控加工的刀具路径优化生成问题提出一种新的有效加工域规划方法。在对工件被加工表面和刀具的几何特征进行分析的基础上,得到在加工件表面上各处的最优可加工域宽度和刀具切削方向。通过采用离散采样和插值计算生成优化的有效加工域集,得到最优化的初始刀具路径;同时建立一种迭代搜索算法,用于解决最优加工域的选择规划问题。采用此算法生成优化的后续刀具路径,使得有效加工域最终完全覆盖整个被加工表面。给出的示例显示相对于传统的五轴加工刀具路径生成算法,有效加工域规划方法可以减少刀具路径的总长度和加工时间,得到更为优化的刀具路径和更好的工件表面质量,因此有效加工域规划方法可以被用于五轴数控加工实践以降低加工成本和提高产品质量。 相似文献
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基于Cimatron的复杂曲面数控加工研究 总被引:1,自引:0,他引:1
基于Cimatron软件CAD/CAM集成环境,通过对加工工艺的分析比较得出对平缓型曲面可以用“WCUT”进行粗、精加工,对凹凸型曲面先用“WCUT”进行粗加工,再用“SRFPKT”进行精加工,给出了一种加工效率高、成型质量好的数控加工方法。以实例对其进行分析,并给出了数控加工模拟效果图,证明该方法既可提高加工效率,又可获得较好的表面加工质量。 相似文献
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High-quality pure-nickel microstructures, which are characterized with multiple superior machining indicators, including machining homogeneity, machining surface roughness, and machining round edge, are now highly anticipated in the field of micromachines and microsystems. However, according to the published studies, a gap remains in achieving high-quality machining. In this paper, wire electrochemical micromachining (WECMM) is proposed for machining high-quality pure-nickel microstructures focusing on different machining indicators. The appropriate electrolyte is selected by combining analysis of the electrochemical characteristics and machining experiments involving microslits of pure nickel. In contrast with previous studies that usually focused on the machining homogeneity or machining surface roughness of the machining results, the effects of several critical machining parameters on the machining homogeneity, machining surface roughness, and machining rounded edge are studied comprehensively, and the relative results for different machining indicators are also revealed. Finally, the combinations of process parameters for manufacturing high-quality pure-nickel microstructures focusing on different machining indicators are identified, and corresponding high-quality pure-nickel microstructures are fabricated. 相似文献
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Ultrasonic elliptical vibration cutting is a very promising technique for the machining of brittle materials. However, its machining performance is currently limited by the ductile machining model and the machining strategy with a constant feed rate, leading to low machining efficiency. To overcome this defect, this paper presents a novel self-tuned ultrasonic elliptical vibration cutting (SUEVC) technique to achieve high-efficient ductile-regime machining of the micro-optics array on brittle materials. The proposed SUEVC includes a ductile-regime machining model and a tool path generation method. In SUEVC, the feed rate adaptively changes with respect to the local shape variation of the desired surface along the feeding direction to ensure both crack-free surface and high machining efficiency. Finally, two 1 × 3 spherical micro-optics arrays were successfully fabricated on single-crystal MgF2 by SUEVC and the traditional machining strategy respectively. Results demonstrated that the SUEVC could enhance the machining efficiency by 30% relative to the traditional machining strategy, while maintaining similar surface roughness and a crack-free surface. 相似文献
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硅晶片的液流悬浮超光滑加工机理与实验 总被引:1,自引:0,他引:1
建立了基于机器人的液流悬浮超光滑加工系统。配置出了适用的悬浮加工液,通过对硅晶片的大量加工实验研究,得到了加工时间、工具转速和粒子浓度对工件表面质量的影响规律。实验结果表明:当加工时间在60 min、工具转速为6 000 r/min上下、粒子浓度为30 g/L左右时,加工效果最佳。加工后的硅晶片表面粗糙度Ra能达到1.55 nm。深入分析了液流悬浮超光滑加工的去除机理,硅晶片的液流悬浮超光滑加工是机械冲击作用和化学作用的综合结果,加工液中的磨料颗粒有对工件表面的机械冲击作用和对化学反应的催化作用。理论分析和实验结果表明,通过采用液流悬浮加工新技术,可以实现对半导体材料硅晶片的纳米水平的超光滑加工,获得表面无塑性变形和晶格缺陷的纳米精度表面。 相似文献
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针对电火花加工中存在的不足,基于多年加工实践经验,给出了提高电火花成形机加工效率和表面质量的措施。研究了电火花成形机加工参数与加工效率和表面质量之间的关系,最后对几种优化组合电加工参数下的加工情况进行了分析研究,所得结论为提高电火花加工质量提供指导。 相似文献
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针对电火花加工中存在的不足,基于多年加工实践经验,给出了提高电火花成形机加工效率和表面质量的措施。研究了电火花成形机加工参数与加工效率和表面质量之间的关系,最后对几种优化组合电加工参数下的加工情况进行了分析研究,所得结论为提高电火花加工质量提供指导。 相似文献