| PREFACE FOREWORD Chapter 1 Introduction 1.1 A brief history and prospect of the development of rock bit 1.2 The progress of t he research an d design of rock bit Chapter 2 The Geometry of The Rock Bit 2.1 The traditional geometry of rock bit 2.2 The fundament al equation s of the modern geometry of rock bit 2.3 The accurate calculation for t he clearance between the adjacent cones 2.4 The transitional zone at the lower en d of bore-hole 2.5 The geometry of the lower part of bit leg Chapter 3 The Kinematics of The Rock Bit 3.1 The traditional kinematics of rock bit 3.2 The fundament al equation s of the velocity of bit teeth 3.3 The rot at ion of the roller 3.4 The number of teeth contacting with the bottom-hole 3.5 The track of teeth on the bottom-h ole and the lateral scraping of bit 3.6 The acceleration of bit teeth Chapter 4 The Bearing System of The Rock Bit 4.1 The friction couple of t he bearing 4.2 The analysis for the bearing wear 4.3 The seal ring 4.4 The pressure balancing and lubricant reservoir compensating system PBLRCS Chapter 5 The Experimental Study on The Interaction Between Bit and Rock 5.1 The axial penetration test by t he single tooth 5.2 The drilling test by t he w hole bit 5.3 The simulation test of the crater-forming process by t he bit teeth 5.4 The advanced approach for digitalized measurement and analysis of the bottom-hole pattern 5.5 The side cutting of t he bit an d the w ell-bore deviation Chapter 6 The New Methodology for The Rock Bit Design 6.1 The main contents of the new design method 6.2 The distinct feature of the new design method References |
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