| Click to enlarge |
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Structure of mechanism |
Function |
The mechanism contains a slider crank connected in parallel with a slider crank RRT kinematic chain. The kinematic chain RRT´s joints are connected with the crank and coupler of the slider crank. By means of changing the geometrical lengths of the mechanism´s links, the coupler point M describes a range of coupler curves. |
Comment |
The following variations of the geometrical dimensions were used to generate the linked videos and animations:
Variant 1: l1 = 20 mm, l2 = 100 mm, l1´ = 30 mm, l4 = 80 mm, x = -15 mm
Variant 2: l1 = 20 mm, l2 = 100 mm, l1´ = 30 mm, l4 = 50 mm, x = -15 mm
Variant 3: l1 = 20 mm, l2 = 100 mm, l1´ = 30 mm, l4 = 40 mm, x = -15 mm
Variant 4: l1 = 25 mm, l2 = 100 mm, l1´ = 20 mm, l4 = 60 mm, x = -15 mm
Variant 5: l1 = 25 mm, l2 = 100 mm, l1´ = 20 mm, l4 = 40 mm, x = -15 mm
Variant 6: l1 = 25 mm, l2 = 100 mm, l1´ = 20 mm, l4 = 20 mm, x = -15 mm
Variant 7: l1 = 30 mm, l2 = 100 mm, l1´ = 5 mm, l4 =100 mm, x = -15 mm
Variant 8: l1 = 30 mm, l2 = 100 mm, l1´ = -5 mm, l4 =100 mm, x = -15 mm
Variant 9: l1 = 30 mm, l2 = 100 mm, l1´ = -15 mm, l4 =100 mm, x = -15 mm
Variant 10: l1 = 30 mm, l2 = 100 mm, l1´ = -45 mm, l4 =100 mm, x = -15 mm
Variant 11: l1 = 30 mm, l2 = 100 mm, l1´ = -60 mm, l4 =100 mm, x = -15 mm |
Dimension of mechanism |
planar |
Number of links |
6 |
Drive movement |
Rotation |
Output movement |
Rotation combined with rectilinear translation |
Degree of freedom |
1 |
Fundamental mechanism |
Link containing mechanism |
Number of inputs |
1 |
Number of followers |
1 |
Revolution ability |
yes |
Revolution ability of input link |
yes |
Relative position between drive and output |
parallel |
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Guidance function |
Direction of the path |
identical direction |
Orientation of output link |
general |
Trace of a dedicated point on follower |
Closed trace |
Dimension of mechanism |
planar |
Input reference |
yes |
Progress of orientation respecting output link |
revolving |
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