JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A

Accepted manuscript available online (unedited version)

Design and comparative analysis of self-propelling drill bit applied to deep-sea stratum drilling robot

Author(s): Pei-hao ZHANG, Xing-shuang LIN, Hao WANG, Jia-wang CHEN, Zhen-wei TIAN, Zi-xin WENG, Zi-qiang REN, Peng ZHOU
Affiliation(s): Ocean College, Zhejiang University, Zhoushan 316021, China; more
Corresponding email(s): arwang@zju.edu.cn
Key Words: Subsea stratum investigation; Stratum drilling robot; Self-propelling drill bit; Penetration resistance

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Pei-hao ZHANG, Xing-shuang LIN, Hao WANG, Jia-wang CHEN, Zhen-wei TIAN, Zi-xin WENG, Zi-qiang REN, Peng ZHOU. Design and comparative analysis of self-propelling drill bit applied to deep-sea stratum drilling robot[J]. Journal of Zhejiang University Science A, 1998, -1(5): .

@article{title="Design and comparative analysis of self-propelling drill bit applied to deep-sea stratum drilling robot",
author="Pei-hao ZHANG, Xing-shuang LIN, Hao WANG, Jia-wang CHEN, Zhen-wei TIAN, Zi-xin WENG, Zi-qiang REN, Peng ZHOU",
journal="Journal of Zhejiang University Science A",
volume="-1",
number="-1",
pages="",
year="1998",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2200351"
}

%0 Journal Article
%T Design and comparative analysis of self-propelling drill bit applied to deep-sea stratum drilling robot
%A Pei-hao ZHANG
%A Xing-shuang LIN
%A Hao WANG
%A Jia-wang CHEN
%A Zhen-wei TIAN
%A Zi-xin WENG
%A Zi-qiang REN
%A Peng ZHOU
%J Journal of Zhejiang University SCIENCE A
%V -1
%N -1
%P
%@ 1673-565X
%D 1998
%I Zhejiang University Press & Springer

TY - JOUR
T1 - Design and comparative analysis of self-propelling drill bit applied to deep-sea stratum drilling robot
A1 - Pei-hao ZHANG
A1 - Xing-shuang LIN
A1 - Hao WANG
A1 - Jia-wang CHEN
A1 - Zhen-wei TIAN
A1 - Zi-xin WENG
A1 - Zi-qiang REN
A1 - Peng ZHOU
J0 - Journal of Zhejiang University Science A
VL - -1
IS - -1
SP -
EP -
%@ 1673-565X
Y1 - 1998
PB - Zhejiang University Press & Springer
ER -

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: Robotic subsea stratum drilling robot is a method for new subsea stratigraphic geological investigation and resource exploration. Resistance at the front end is the main source of resistance to the robot's motion in the strata. Since there is no continuous and strong downward drilling force as in conventional drilling rigs, robot movement relies heavily on the drill bit to reduce the drilling resistance. In this paper we propose a self-propelling drill bit that can discharge soil debris to provide propulsive force and reduce the resistance. The key parameter of the drill bit design, the spiral blade lead angle, was determined by theoretical analysis of the drill bit's soil discharging effect. To verify the structural advantages of the self-propelling drill bit in reducing resistance, a comparative analysis with a conventional conical drill bit was conducted. The drilling process of both bits was simulated using finite element simulation at various rotation speeds, the penetration force and torque data of both drill bits were obtained, and tests prepared accordingly in subsea soils were conducted. The simulations and tests verified that the penetration force of the self-propelling drill bit was lower than that of the conventional conical drill bit. The self-propelling drill bit can reduce the resistance effectively, and may play an important role in the stratum movement of drilling robots.

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