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圆锥表面螺旋槽缠绕网格的数控加工方法
张大勇1,杜锦文1,梁祖典2,马严玮1,杨迪1
1.首都航天机械有限公司,北京 100076;2.中国运载火箭技术研究院,北京 100076
摘要:
为探索圆锥表面螺旋槽缠绕网格结构的数控加工方法,从圆锥等螺距螺旋线参数方程入手,经过坐标转换,推导出螺旋槽的加工刀位点信息,最终实现在三轴联动机床上采用恒定刀轴角度对圆锥表面等螺距螺旋槽的数控加工。研究结果表明,此类加工方法加工出的螺旋槽侧壁和底部垂直度达到0.02 mm,表面粗糙度达到1.6 μm,槽深6~6.03 mm,与五轴加工相比均有显著提升,而且加工效率提高一倍,成本降低68%,在工程中可以推广应用。
关键词:  螺旋槽  坐标转换  三轴联动
DOI:10.12044/j.issn.1007-2330.2020.03.006
分类号:V461
基金项目:
NC Machining Method of Conical Surface Spiral Groove Wound Grid
ZHANG Dayong1, DU Jinwen1, LIANG Zudian2, MA Yanwei1, YANG Di1
1.Capital Space Machinery Co.Ltd.,Beijing 100076;2.China Academy of Launch Vehicle Technology,Beijing 100076
Abstract:
In order to explore the NC machining method of spiral groove winding grid structure on conical surface,the parameter equation of the cone equal pitch spiral line was studied.Through coordinate transformation,the machining tool positions of spiral groove were deduced.Finally,the NC machining of the spiral groove with equal pitch on the surface of the cone with a constant blade angle was realized on the three-axis linkage machine bed.The research results show that the verticality of the side wall and bottom of the spiral groove reaches 0.02 mm,the surface roughness reaches Ra 1.6 μm ,and the depth of the groove is 6 ~ 6.03 mm.Compared with the five-axis processing,it is a remarkable improvement.In addition,the processing efficiency is doubled and the cost is reduced by 68%.This method should be promoted and applied in engineering.
Key words:  Spiral groove  Coordinate transformation  Three-axis linkage