1. 南榮技術學院 101 學年度第二學期教師教學媒體觀摩及數位教材製作2015/9/11 工程科技研究所 副教授 蔡錦山 1 報告人：工程科技研究所 副教授 蔡錦山 A Study on the Linkage Mechanisms

2. Outline 2 Introduction § Motivation § Example § Application § 2015/9/11 工程科技研究所 副教授 蔡錦山 Conclusions §

3. Introduction 3 2015/9/11 工程科技研究所 副教授 蔡錦山 Data source : http://en.wikipedia.org/wiki/Linkage_(mechanical)http://en.wikipedia.org/wiki/Linkage_(mechanical) A mechanical linkage is an assembly of bodies connected to manage forces and movement. The movement of a body, or link, is studied using geometry so the link is considered to be rigid. The connections between links are modeled as providing ideal movement, pure rotation or sliding for example, and are called joints.

4. Linkage Mechanism 4 2015/9/11 工程科技研究所 副教授 蔡錦山 Data source : http://www.freepatentsonline.com/3680881.html://en.wikipedia.org/wiki/Linkage_(mec hanical) http://www.freepatentsonline.com/3680881.html://en.wikipedia.org/wiki/Linkage_(mec hanical) A linkage mechanism coupling a supporting structure and a moveable member for insuring relative linear motion of the moveable member. A controlled arm and a radial lever are so coupled along a center line to the supporting structure and each other that a controlled arm end is restricted to substantially linear motion only for a predetermined segment of its path.

5. Variable stroke engine 5 2015/9/11 工程科技研究所 副教授 蔡錦山 Picture source : Autocar Handbook, Ninth edition

6. 6 Motivation (1/2) Crank-Rocker Mechanism: Kinematics @ 2015/9/11 工程科技研究所 副教授 蔡錦山

7. 7 Motivation (2/2) 2015/9/11 工程科技研究所 副教授 蔡錦山 Crank-Rocker Mechanism: CAD @ Press the picture to animate the motion of the Crank-Rocker Mechanism.

8. Example: A Belt-Driven Camshaft 8 2015/9/11 工程科技研究所 副教授 蔡錦山 Press the picture to show that how to complete the Belt-Driven Camshaft.

9. 9 Application (1/4) A Double Chebyshev's Linkage Mechanism: Design @ 2015/9/11 工程科技研究所 副教授 蔡錦山

10. 10 Application (2/4) 2015/9/11 工程科技研究所 副教授 蔡錦山 A Double Chebyshev's Linkage Mechanism: Simulation @

11. 11 Application (3/4) A Double Chebyshev's Linkage Mechanism: CAD @ 2015/9/11 工程科技研究所 副教授 蔡錦山 Press the picture to animate the motion of the Double Chebyshev's Linkage Mechanism.

12. 12 Application (4/4) 2015/9/11 工程科技研究所 副教授 蔡錦山 A Double Chebyshev's Linkage Mechanism: Product @ Press the picture to see the motion of the Double Chebyshev's Linkage Mechanism.

13. 13 Conclusions CAD (Computer Aided Design) compared with Kinematics of Machines for the linkage mechanism design is @ 2015/9/11 工程科技研究所 副教授 蔡錦山 Simpler More Convenient More Flexible More Economic More Efficient More Creative @

14. 2015/9/11 工程科技研究所 副教授 蔡錦山 14 敬請指導謝謝聆聽

15. A Belt-Driven Camshaft 2015/9/1115

16. Introduction 2015/9/1116 Creating cams using curved slots Using gears to simulate a belt drive mechanism Using rulers to draw precise shapes

17. Setting Up the Workspace (1/3) 2015/9/1117

18. Preferences dialog 2015/9/1118

19. Setting Up the Workspace (2/3) 2015/9/1119

20. Numbers and Units dialog (1/2) 2015/9/1120

21. Numbers and Units dialog (2/2) 2015/9/1121

22. Setting Up the Workspace (3/3) 2015/9/1122

23. Workspace dialog 2015/9/1123

24. Empty workspace 2015/9/1124 The y-axis The x-axis Grid lines Rulers

25. Grid Snap should be activated 2015/9/1125

26. View Size dialog (1/2) 2015/9/1126

27. View Size dialog (2/2) 2015/9/1127 automatically computes the other

28. Drawing the Disk directly 2015/9/1128

29. Attaching the Disk to the Background 2015/9/1129 These fields show the coordinates of the other point of the pin joint.

30. Drawing the Curved Slot 2015/9/1130

31. Changing the Shape of the Curved Slot (1/10) 2015/9/1131

32. Changing the Shape of the Curved Slot (2/10) 2015/9/1132

33. Changing the Shape of the Curved Slot (3/10) 2015/9/1133

34. Changing the Shape of the Curved Slot (4/10) 2015/9/1134

35. Changing the Shape of the Curved Slot (5/10) 2015/9/1135

36. Changing the Shape of the Curved Slot (6/10) 2015/9/1136

37. Changing the Shape of the Curved Slot (7/10) 2015/9/1137

38. Changing the Shape of the Curved Slot (8/10) 2015/9/1138

39. Changing the Shape of the Curved Slot (9/10) 2015/9/1139

40. Changing the Shape of the Curved Slot (10/10) 2015/9/1140

41. Numerically reshaped cam 2015/9/1141

42. Creating Cam Followers (1/2) 2015/9/1142

43. Creating Cam Followers (2/2) 2015/9/1143

44. Choose the Horizontal Keyed Slot tool and click one of the cam followers 2015/9/1144

45. Choose the Horizontal Keyed Slot tool and click the other of the cam followers 2015/9/1145

46. Two cam followers with keyed slot joints 2015/9/1146

47. The snap point 2015/9/1147

48. Snap point near the right end of the left cam follower 2015/9/1148

49. Snap point near the left end of the right cam follower 2015/9/1149

50. Duplicating a curved slot (1/2) 2015/9/1150

51. Duplicating a curved slot (2/2) 2015/9/1151

52. Select the original curved slot and choose Appearance from the Window menu 2015/9/1152

53. Enter “Left Follower Slot” in the name field of the Appearance window 2015/9/1153 Left Follower Slot

54. Select the duplicated curved slot and enter “Right Follower Slot” in the name field of the Appearance window 2015/9/1154 Right Follower Slot

55. Verify the FOR coordinates for the Left Follower Slot (1/2) 2015/9/1155

56. Verify the FOR coordinates for the Left Follower Slot (2/2) 2015/9/1156

57. Verify the FOR coordinates for the Right Follower Slot (1/2) 2015/9/1157

58. Verify the FOR coordinates for the Right Follower Slot (2/2) 2015/9/1158

59. Attaching the Cam Followers to the Slots (1/4) 2015/9/1159 Shift + the point

60. Attaching the Cam Followers to the Slots (2/4) 2015/9/1160

61. Attaching the Cam Followers to the Slots (3/4) 2015/9/1161 Shift + the point

62. Attaching the Cam Followers to the Slots (4/4) 2015/9/1162

63. Dragging the cam disk 2015/9/1163

64. To restore the initial conditions 2015/9/1164

65. Creating the Drive Disk 2015/9/1165

66. Click the center snap point of the drive disk to attach the motor 2015/9/1166

67. Properties window for a motor 2015/9/1167

68. Selecting the gear constraint 2015/9/1168

69. Properties window for gears 2015/9/1169

70. Choose Accuracy from the World menu 2015/9/1170

71. Simulation Accuracy dialog 2015/9/1171

72. Choose Time from the Measure menu 2015/9/1172 Press the picture to animate the motion of the Belt-Driven Camshaft.

73. HW#5-A Belt-Driven Camshaft (1/2) 2015/9/1173 Cam Follower Driving Disk

74. HW#5-A Belt-Driven Camshaft (2/2) 2015/9/1174