The quick return mechanism which is an inversion of 4-bar linkage is

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Find the length of stroke if the length of the slotted bar is 0.45m and LOS passes through the free end of the lever. Length of driving crank = 0.12m, distance between fixe centres = 0.24m. Crank and slotted lever quick return motion mechanism.

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

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Find the inclination of the slotted bar with the vertical in degrees in the extreme position from the following information: In a crank and slotted lever quick return motion mechanism, the distance between the fixed centres is 0.240 m and the length of the driving crank is 0.120 m.

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

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Match list I with list II List I List II A. Scott-Russel 1. Intemittent mechanism motion B. Geneva 2. Quick return mechanism motion C. Offset slider crank 3. Simple motion harmonic mechanism D. Scotch Yoke 4. Straight line mechanism motion

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

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In Whitworth quick return motion mechanism, the driving crank is under an accelerated motion

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Find the ratio of the time of cutting to the time of return stroke from the following information: In a crank and slotted lever quick return motion mechanism, the distance between the fixed centres is 0.240 m and the length of the driving crank is 0.120 m.

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

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Whitworth quick return motion mechanism is an inversion of a double slider crank chain.

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A crank and slotted lever mechanism used in a shaper has a centre distance of 300 mm between the centre of oscillation of the slotted lever and the centre of rotation of the crank. The radius of the crank is 120 mm. Find the ratio of the time of cutting to the time of return stroke.

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

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Find the ratio of the time of cutting to the time of return stroke from the following information: A crank and slotted lever mechanism used in a shaper has a centre distance of 0.300 m between the centre of oscillation of the slotted lever and the centre of rotation of the crank. The radius of the crank is 0.120 m.

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

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Bull engine is an inversion of single slider crank chain.

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Match list I with list II List I List II A. Quick return mechanism 1. Lathe B. Apron mechanism 2. Milling machine C. Indexing mechanism 3. Shaper D. Regulating wheel 4. Centreless grinding

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

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The number of degree of freedom of a planer linkage with 8 links and 9 simple revolute joints is

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In a crank and slotted lever type quick return mechanism, the link moves with an angular velocity of 20 rad/s, while the slider moves with the linear velocity of 1.5 m/s. The magnitude and direction of Coriolis component of acceleration with respect to angular velocity are

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Which of the following mechanism is used to convert reciprocating motion into rotary motion?

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A mechanism has 8 links, out of which 5 are binary, 2 are ternary and 1 is quaternary. The number of instantaneous centres of rotation will be

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Which of the following mechanism is mostly used in shaping and slotting machines?

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The number of binary links, number of binary joints and number of ternary joints in Peaucelliar mechanism is

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In a drag link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is

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The whitworth quick return motion mechanism is formed in a slider crank chain when the

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Whitworth quick return motion mechanism consists of three turning pairs and one sliding pair.

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In a 4 – bar linkage, if the lengths of shortest, longest and the other two links are denoted by s, l, p and q, then it would result in Grashof’s linkage provided that

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

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In the given figure, 1 and 2 are sliders, 3 is a bar and 4 is a fixed slotted plate, identify the mechanism.

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The lengths of the links of a 4- bar linkage with revolute pairs only are p,q,r and s units. Given that p < q < r < s and s+p < q+r which of these links should be the fixed one, for obtaining a ‘double crank’ mechanism?

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

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The lengths of the links of a 4-bar linkage with revolute pairs are p,q,r, and s units. given that p<q<r<s. Which of these links should be the fixed one, for obtaining a “double crank” mechanism ?

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

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The magnitude of velocities of the points on a rigid link is directly proportional to the distances from the points to the instantaneous centre.

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When the pin connects one sliding member and the other turning member, the angular velocity of the sliding member is __________

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

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