Module One　Machining Long Lead Screw and Worm 1
Task 1　Machining Long Lead Screw 1
Subtask 1　Lead Screw Processing and Test 1
Subtask 2　Turning Long Lead Screw 11
Task 2 Machining Multi-start Thread and Multi-line Worms 21
Subtask 1　Machining Multi-start Thread 21
Subtask 2　Machining Multi-line Worms 31
Module Two　Machining Eccentric Parts and Multi-throw Crankshaft 43
Task 1　Machining Double Eccentric Parts 43
Subtask 1　Machining Double Eccentric Sleeve 43
Subtask 2　Turning Coaxial Double Eccentric Shaft and
Reverse Double Eccentric Sleeve 52
Task 2　Machining Four-throw Crankshaft 67
Module Three　Machining Gearbox 90
Task 1　Machining Gearbox Body 90
Subtask 1　Machining Gearbox Hole 90
Subtask 2　Measuring Gearbox Size 96
Task 2　Machining Worm Gear Housing 106
Task 3　Machining Bevel Gears 113
Module Four　Machining Assembly 122
Task 1　Machining Bisector Parts 122
Subtask 1　Machining Bearing Bush 122
Subtask 2　Machining Split Bearing Seat 127
Task 2　Machining Mold 134
Subtask 1　Machining Cylinder Mold 134
Subtask 2　Machining Gear Mold 143
Task 3　Machining Shaft and Kit Combination 147
Subtask 1　Machining Tri-eccentric Shaft Sleeve 147
Subtask 2　Machining Cone Eccentric Four-item Assembly 159
References 174