TY - JOUR
T1 - Tool interference at workpiece centre in single-point diamond turning
AU - Zhang, Guoqing
AU - Dai, Yuqi
AU - To, Suet
AU - Wu, Xiaoyu
AU - Lou, Yan
N1 - Funding Information:
The research proposed in this paper was supported by the National Natural Science Foundation of China (Grant No. 51505297 , 51575360 and 51675347), the Natural Science Foundation of Guangdong Province (Grant No. 2017A030313295), the Shenzhen Science and Technology Program (Grant No. JCYJ20160422170026058 , JCYJ20160520175255386) and the Shenzhen Peacock technology innovation project (Grant No. KQJSCX20170727101318462).
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/2
Y1 - 2019/2
N2 - In single-point diamond turning (SPDT), the workpiece centre error owing to the tool height below or above the spindle axis causes cylinder or cone appearances at the workpiece centre. The formed cone or cylinder boundary is used to identify the tool height and then compensate for it, in order to obtain the desired surface profile. As opposed to previous studies, based on the fact that the diamond tool is elevated during cone formation and therefore forms a tool interference zone with higher land and larger radius, this research conducts a theoretical and experimental study to investigate the origin of tool interference owing to centre error, and its influencing factors. In this study, the relation between centre error and interference force was investigated. A series of experiments were conducted to explore tool interference generation and its influencing factors. A mathematical model was derived to calculate the tool interference zone radius, whereby the relation between this radius and the cutting conditions was established. Moreover, the error sources between the theoretical and experimental results were analysed. As centre error can only be reduced by compensation and cannot be eliminated, particularly in machine tools with poor resolution, it is meaningful to conduct research on the centre cone generation and its influence on tool interference in SPDT, as well as suppressing the tool interference in SPDT. Furthermore, this research provides a reference for establishing an online force-based centre error identification method, thereby improving cutting efficiency.
AB - In single-point diamond turning (SPDT), the workpiece centre error owing to the tool height below or above the spindle axis causes cylinder or cone appearances at the workpiece centre. The formed cone or cylinder boundary is used to identify the tool height and then compensate for it, in order to obtain the desired surface profile. As opposed to previous studies, based on the fact that the diamond tool is elevated during cone formation and therefore forms a tool interference zone with higher land and larger radius, this research conducts a theoretical and experimental study to investigate the origin of tool interference owing to centre error, and its influencing factors. In this study, the relation between centre error and interference force was investigated. A series of experiments were conducted to explore tool interference generation and its influencing factors. A mathematical model was derived to calculate the tool interference zone radius, whereby the relation between this radius and the cutting conditions was established. Moreover, the error sources between the theoretical and experimental results were analysed. As centre error can only be reduced by compensation and cannot be eliminated, particularly in machine tools with poor resolution, it is meaningful to conduct research on the centre cone generation and its influence on tool interference in SPDT, as well as suppressing the tool interference in SPDT. Furthermore, this research provides a reference for establishing an online force-based centre error identification method, thereby improving cutting efficiency.
KW - Centre cone
KW - Centre error
KW - Single-point diamond turning
KW - Tool interference
UR - http://www.scopus.com/inward/record.url?scp=85056471119&partnerID=8YFLogxK
U2 - 10.1016/j.ijmecsci.2018.10.057
DO - 10.1016/j.ijmecsci.2018.10.057
M3 - Journal article
AN - SCOPUS:85056471119
SN - 0020-7403
VL - 151
SP - 1
EP - 12
JO - International Journal of Mechanical Sciences
JF - International Journal of Mechanical Sciences
ER -