中文

Journal of Applied Sciences ›› 1997, Vol. 15 ›› Issue (4): 459-468.

• Articles • Previous Articles     Next Articles

ANALYTICAL PREDICTION OF SPADE DRILLING PROCESS PART 2 DRILLING FORCES WITH ARBITRARY DRILL POINT ANGLE

SHEN QIAN1, LI DACHAO2, LIU WEICHENG3, ZHOU CHANGXIU4, WANG MIN1   

  1. 1. Department of Mechanical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016;
    2. Department of Manufacturing Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong;
    3. Hong Kong Technical College, ChaiWan, Hong Kong;
    4. Department of Mechanical Engineering, Southeast University, Nanjing 210018
  • Received:1995-10-16 Revised:1996-01-11 Online:1997-12-31 Published:1997-12-31

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Abstract: In this paper, the spade drill point geometric parameters are analyzed in detail. The cutting lips were modeled in the previous part of this study, and are extended to accounting for the dynamic effects of cutting and feed velocities. The models for calculating main cutting edge torque and thrust force in spade drilling are deduced. The force components.obtained from the models are integrated along the lips. These models can be applied to the spade drills with arbitrary drill point angle. Predicted torque and thrust force for the cutting lips are agreed well with the experimental data from spade drilling tests.

Key words: torque, drill point, geometric parameters, thrust force