Study on Optimum Geometric Dimensions of Micro-Forming Taps (MFTs) in SUS 316L Stainless Steel Tapping
Hsing-Ming Tenga, Chien-Chung Chenb, Yung-Han Hsuc, Ming-Chang Wud, Chung-Chen Tsaod and Ling-Sheng Hsue
aDepartment of Industrial Education, National Taiwan Normal University, Taipei 106308, Taiwan, ROC
bDepartment of Intelligent Vehicles and Energy, Minth University of Science and Technology, Hsinchu 307304, Taiwan, ROC
cDepartment of Mechanical Engineering, National Central University, Taoyuan, 32054, Taiwan, R.O.C.
dDepartment of Mechanical Engineering, Lunghwa University of Science and Technology, Taoyuan, Taiwan 333326, ROC.
eHe Zuan Machine Co., Ltd., Hsinchu 307001, Taiwan, ROC
|
Abstract:
This study aims to develop a new tapping tool design based on the geometric parameters (outer diameter (D), tool width (W), tooth root diameter (D ) and length of the invalid tooth (L)) of the MFT to overcome the problem of using traditional tap on the defects of tool breakage (tapping torque), low processing efficiency and chip removal during SUS 316L stainless steel tapping. Simultaneously, the second-order response surface model of quality characteristics was established through Box-Behnken design (BBD) and regression analysis, and the optimal tool geometric parameters for the minimum tapping torque (T) and tooth filling rate (f) of M1.2 tungsten carbide MFTs in SUS316L stainless steel tapping was discussed. Finally, the experimental results show that the T and f prediction models, as well as the optimum geometric parameters of MFT obtained in this study are quite accurate and consistent.
|