Development of lapping tools for mirror-like surface processing of cemented carbide die

• Autorzy: Soe Y. H. , Tanabe I. , Iyama T. , Nishiyama S.
• Języki publikacji: EN

Abstrakty

EN

Recently, cemented carbide dies are used for many industrial products, due to their high stiffness and long life. Electric discharge machining is conventionally used and then, hand lapping is finally undergoes for mirror-like finishing of these products. In privious research, a simple lapping system for only plane surfaces of cemented carbide die was developed. In this study, several lapping tools for lapping of side, edge and corner were developed and evaluated by experiments. The system consists of a lapping tool, lapping vessel and conventional NC milling machine. The lapping vessel is placed on the table of the NC machine and the lapping tool is fitted with the spindle of the NC machine. Cemented carbide work piece is sunk and fitted in the lapping slurry and lapping processing is taken using the developed tools. Each lapping tool consists of a coil spring for supplying lapping pressure and the NC program was made possible to move the lapping head to contact and leave the work surface regularly for catching new grains and dressing. These lapping tools were finally evaluated by experiments. It is concluded from the results that the developed lapping tools were capable of lapping side, edge and corner of the cemented carbide work pieces for mirror-like surface finishing.

Słowa kluczowe

EN

lapping; die; cemented carbide; mirror-like surface; finishing

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2012
• Tom: Vol. 12, No. 1
• Strony: 66--75
• Opis fizyczny: Bibliogr. 5 poz., tab., rys.

Twórcy

autor

Soe Y. H.

• Nagaoka University of Technology, Dept. of Information Science and Control Engineering

autor

Tanabe I.

• Nagaoka University of Technology, Dept. of Mechanical Engineering

autor

Iyama T.

• Nagaoka University of Technology, Educational Affairs Section, Mechanics and Machinery Group

autor

Nishiyama S.

• Nagaoka University of Technology, Dept. of Mechanical Engineering

Bibliografia

• [1] UNO Y., OKADA A., NAKANISHI H., OKAMOTO Y., 1997, Fundamental Study on Electrical Discharge Machining of Single Crystalline Silicon, Journal of the Japan Society for Precision Engineering, 63/10/1459-14.
• [2] UNO Y., OKADA A., 2005, Surface Modification of EDMed Surface by Electron Beam Irradiation, Journal of the Japan Society for Precision Engineering, 71/5/553-556.
• [3] SASAKI T., MIYOSHI T., SAITO K., KATOHGI O., 1991, Knowledge Acquisition and Automation of Polishing Operations for Injection Mold(1st Report, Hand Polishing Properties of a Skilled Machinist), Journal of the Japan Society for Precision Engineering, 53/3/497-503.
• [4] SASAKI T., MIYOSHI T., SAITO K., KATOHGI O., 1991, Knowledge Acquisition and Automation of Polishing Operations for Injection Mold(2nd Report, Expert System for Mold and Die Polishing Operation), Journal of the Japan Society for Precision Engineering, 53/3/497-503.
• [5] IYAMA T., TAKAHASHI T., 2009, Optimization of Lapping Slurry in Automatic Lapping System for Dies with Cemented Carbide and Its Evaluation, Transactions of the Japan Society of Mechanical Engineer, Series C, 75/749/210-215.