3.2 Variation of revolute four-bar mechanism Transformation techniques or rules that can be applied 1.Replacing a revolute pair with a sliding pair ■ 2.Taking different links as the frame 3.Enlarge a revolute pair 4.Interchanging guide-bar and sliding block
3.2 Variation of revolute four-bar mechanism ◼ Transformation techniques or rules that can be applied ◼ 1. Replacing a revolute pair with a sliding pair ◼ 2. Taking different links as the frame ◼ 3. Enlarge a revolute pair ◼ 4. Interchanging guide-bar and sliding block
1.Replacing a revolute pair with a sliding pair e:represents eccentric or offset ww77
1. Replacing a revolute pair with a sliding pair ◼ e: represents eccentric or offset
2.Taking different links as the frame For the same kinematic chain,different kinds of mechanisms will be generated by holding different links fixes as the frame.Such kinds of variations are called inversions
◼ For the same kinematic chain,different kinds of mechanisms will be generated by holding different links fixes as the frame. Such kinds of variations are called inversions. 2. Taking different links as the frame
3.Enlarge a revolute pair 3
3. Enlarge a revolute pair ◼
4.Interchanging guide-bar and sliding block
4. Interchanging guide-bar and sliding block ◼