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1.天津大学 精密仪器与光电子工程学院 精密测试技术及仪器国家重点实验室,天津 300072
2.天津职业技术师范大学 机械工程学院,天津 300222
[ "宫虎(1974-),男,安徽淮南人,副教授,博士生导师,2005年于大连理工大学获得博士学位,主要从事数控加工、超声加工和超精密加工方面的研究。E-mail:gonghu@tju.edu.cn" ]
[ "陈芳琪(1995-),男,江西南昌人,硕士研究生,2017年于中国农业大学获得学士学位,主要从事超声辅助加工、有限元仿真和结构设计等方面的研究。E-mail:chfq1995@tju.edu.cn" ]
收稿日期:2019-05-28,
录用日期:2019-7-15,
纸质出版日期:2019-09-15
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宫虎, 陈芳琪, 王涛, 等. 陶瓷人工髋关节球超精密磨削加工微观纹理形成规律[J]. 光学 精密工程, 2019,27(9):1926-1934.
Hu GONG, Fang-qi CHEN, Tao WANG, et al. Micro-texture law of ceramic artificial hip ball ultra-precision grinding[J]. Optics and precision engineering, 2019, 27(9): 1926-1934.
宫虎, 陈芳琪, 王涛, 等. 陶瓷人工髋关节球超精密磨削加工微观纹理形成规律[J]. 光学 精密工程, 2019,27(9):1926-1934. DOI: 10.3788/OPE.20192709.1926.
Hu GONG, Fang-qi CHEN, Tao WANG, et al. Micro-texture law of ceramic artificial hip ball ultra-precision grinding[J]. Optics and precision engineering, 2019, 27(9): 1926-1934. DOI: 10.3788/OPE.20192709.1926.
陶瓷髋关节球是人工髋关节置换手术中重要的零件之一。为了实现对陶瓷髋关节球高效、高质量的加工,搭建了旋转超声辅助展成球面磨削装置。首先,介绍了旋转超声辅助球面磨削加工的基本原理。接着,针对装置的运动特性建立了磨粒运动学轨迹方程。结合运动学方程,对加工状态下的磨粒进行了运动学轨迹分析,深入研究了球面微观纹理的成形规律。最后,进行了超声辅助磨削陶瓷人工髋关节球实验。实验结果表明,在刀具转速为3 000 r/min,工件转速为2 011 r/min的加工条件下,面粗糙度平均值为96 nm,线粗糙度平均值为56 nm。当陶瓷球转速和砂轮转速互为质数时,球面表面的纹理分布更加均匀,这为加工参数的优化提供了重要的理论依据。
The ceramic hip ball is one of the important parts in artificial hip replacement surgery. In order to realize the high-efficiency and high-quality processing of the ceramic hip ball
a rotating ultrasonic-assisted spherical grinding device was built in this study. First
the basic principle of rotary ultrasonic-assisted spherical grinding was introduced. Then
according to the motion characteristics of the device
the equation of the trajectory of the abrasive particle was established. Combined with the kinematic equation
the kinematic trajectory analysis of the abrasive grains in the processing state was carried out
the forming law of the spherical microtexture was studied in detail. Finally
an ultrasonic-assisted grinding of ceramic artificial hip joint ball experiment was performed. The results show that
at tool speed of 3000 r/min and workpiece rotation speed of 2011 r/min
the average surface roughness is 96 nm
and the line roughness average is 56 nm. When the rotational speed of the ceramic ball and grinding wheel are mutually prime
the texture distribution of the spherical surface is more uniform
which provides an important theoretical basis for the optimization of processing parameters.
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