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 基于参数曲面映射的五轴数控螺旋加工轨迹计算方法 Alternative Title Processing Calculation Method of 5-axis NC Spiral Trajectory Based on Parametric Surface Mapping 周波; 赵吉宾; 刘伟军; 李论 Department 装备制造技术研究室 Source Publication 机械工程学报 ISSN 0577-6686 2013 Volume 49Issue:5Pages:100-109 Indexed By EI ; CSCD EI Accession number 20131616214607 CSCD ID CSCD:4785182 Contribution Rank 1 Funding Organization 国家重点基础研究发展计划(973计划,2011CB302400); 国家自然科学基金(50975274,51175479)资助项目 Keyword 五轴数控加工 偏微分方程 映射规则 螺旋轨迹 Abstract 采用五轴数控机床进行高速加工时,加工干涉及曲面转角处的突变会造成刀轴矢量剧烈变化,而采用传统的退刀再进刀的方法又难免导致加工效率及质量的降低。针对上述问题,提出一种新颖的适用于五轴高速加工的刀具路径生成算法。该方法由偏微分方程的热传导模型,计算得到映射参数域内满足加工参数的温度等值线,制定映射规则并在标准参数域内规划出加工轨迹,从而在对应参数域内映射生成螺旋轨迹,并将该轨迹映射到参数曲面上获得曲面的螺旋加工轨迹,该轨迹可以实现无退刀加工。采用上述算法进行了仿真,仿真结果表明该方法优于现有加工方法,可实现基于参数曲面及裁剪曲面的复杂型腔的高速加工。 Other Abstract Using 5-axis CNC machine tools for high speed machining, once a mutation occurs somewhere in the processing interference and mutations of surface corner, the mutation of tool axis vector may occur rapidly, while the use of traditional methods including retracting and then engaging again, will inevitably lead to reduce the product quality and process efficiency. To solve the above problems, a novelty path generation algorithm for 5-axis high speed machining is proposed. The processes are carried out which are using partial differential equations of heat conduction model and defining the projection parameters of projection region for the calculation of contours within the projection region, selecting out of the temperature contours which meet the processing conditions, defining the mapping rules and planning processing trajectory within the standard parameter domain, then mapping trajectory to the corresponding parameter domain to generate spiral trajectory, and mapping the spiral trajectory to the parametric surface to generate the spiral processing trajectory. This processing trajectory can be achieved without retracting processing. Using the above algorithm to obtain the simulation results, it shows that the new method is superior to traditional processing methods. The results also show that this method can achieve high-speed processing based on the complexity of parametric surfaces and cavity of trimmed surface. Language 中文 Citation statistics Cited Times:3[CSCD]   [CSCD Record] Document Type 期刊论文 Identifier http://ir.sia.cn/handle/173321/10560 Collection 智能产线与系统研究室 Affiliation 1.中国科学院沈阳自动化研究所2.中国科学院大学 Recommended CitationGB/T 7714 周波,赵吉宾,刘伟军,等. 基于参数曲面映射的五轴数控螺旋加工轨迹计算方法[J]. 机械工程学报,2013,49(5):100-109. APA 周波,赵吉宾,刘伟军,&李论.(2013).基于参数曲面映射的五轴数控螺旋加工轨迹计算方法.机械工程学报,49(5),100-109. MLA 周波,et al."基于参数曲面映射的五轴数控螺旋加工轨迹计算方法".机械工程学报 49.5(2013):100-109.