Task 1: Cams A cam, with a pointed follower, is required to produce a lift of...
Task 1: Cams
A cam, with a pointed follower, is required to produce a lift of 25 mm, over 75° of rotation. This lift should be followed by 20° of dwell and then a further 75° of fall. The base circle of the cam should be 100 mm.
If the constant velocity required in part a) is 12 mm/s:
- calculate the speed of rotation required.
[3 marks]
- At the speed of rotation calculated for part c), what would the constant acceleration be for the cam in part b)?
[2 marks]
Homework Answers
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Task 1: Cams
A cam, with a pointed follower, is required to produce a lift of...
A disc cam is to be designed for a knife edge follower with the following...
A disc cam is to be designed for a knife edge follower with the following data :Cam lift = 60 mm during 120° of cam rotation with simple harmonic motion. Dwell for the next 30°.During the next 90° of cam rotation, the follower returns to its original position with simple harmonic motion.Dwell during the remaining 120°.Draw the profile of the cam when the line of stroke of the follower passes through the axis of the cam shaft. The radius of...
A cam with a knife-edge follower has a motion with the following characteristics:
A cam with a knife-edge follower has a motion with the following characteristics: lift = 50 mm base circle radius = 25 mm outstroke = 110 degrees cam rotation with cycloidal motion first dwell = 80 degrees return stroke = 90 degrees with simple harmonic motion Cam rotates at 550 rpm in CCW direction Determine the maximum velocity and acceleration of the follower during outstroke and return stroke.
Calculate angle and lift for each segment. A plate cam with a reciprocating follower is to...
Calculate angle and lift for each segment.
A plate cam with a reciprocating follower is to rotate clockwise at 400 rev/min. The follower is to dwell for 60° of cam rotation, after which it is to rise to a lift of 2.5 in. During 1 in of the return motion, it must have a constant velocity of -40 in/s. Recommend standard cam motions from Sec. 6.7 to be used for high-speed operation, and determine the corresponding lifts and cam rotation...
2. (8 points) A cam with a knife-edge follower has a motion with the following characteristics:...
2. (8 points) A cam with a knife-edge follower has a motion with the following characteristics: lift = 50 mm base circle radius = 25 mm outstroke = 110 degrees cam rotation with cycloidal motion first dwell = 80 degrees return stroke = 90 degrees with simple harmonic motion Cam rotates at 550 rpm in CCW direction Determine the maximum velocity and acceleration of the follower during outstroke and return stroke.
Consider a cam with a roller follower. The cam displacement curve is in the given order:...
Consider a cam with a roller follower. The cam displacement curve is in the given order: i. for 45 degrees, a sinusoidal rise of 1 in ii. for 75 degrees, a dwell iii. for 60 degrees, a cycloidal return of 1 in iv. for 180 degrees, a dwell During the motion, the velocity is continuous but not necessarily the acceleration. a) Assume a constant cam speed of 1200 rpm. Find the maximum magnitude of the velocity (in inch/s) and acceleration...
Please be sure that the SCALE is 1:1 . CAM DESIGN lower type. Knife-edged follower •...
Please be sure that the SCALE is 1:1
. CAM DESIGN lower type. Knife-edged follower • Lift = 26 mm • Base circle radius = 28 mm Outstroke: Cycloidal motion for 120° cam rotation Dwell for 750 • Return stroke: Simple harmonic motion for 100° cam rotation • Dwell for the remaining 650 Cam rotates at 600 rpm in CW direction Cam shaft diameter: 18 mm • Cam thickness: 4+1 mm Draw the Displacement-Time (O) diagram. Use 1:1 scale. Draw...
10 Marks Question Five A cam drives a flat-faced follower. It is designed for.a zero lift from 0 to 70 degrees and f...
10 Marks Question Five A cam drives a flat-faced follower. It is designed for.a zero lift from 0 to 70 degrees and for a harmonic in the rise from 70 to 150 degrees. It then dwells at 40 mm lift for cam angles from 150 deg to 250 deg. Followed by a return with a uniform-motion follower displacement from 250 to 360 degrees. If the cam angular velocity is constant ot 1000 rpm, determine 40.0 70 100 150 200 250...
2. Using cycloid curves to design a disk cam to give uniform acceleration and deceleration to a pointed follower with a pinion wheel radius Ro-0.5 in and an eccentricity 80.2 in. The base radius...
2. Using cycloid curves to design a disk cam to give uniform acceleration and deceleration to a pointed follower with a pinion wheel radius Ro-0.5 in and an eccentricity 80.2 in. The base radius of the disk cam is R,-5. The follower will rise 3 in. while the cam turn through 120°, dwell for 80°, and fall 3 in. for 120°, and dwell for the remaining 40°. Explicitly express the pressure angle over a complete revolution. Do we have any...
A cam rotating clockwise at a uniform speed of 120 rpm
A cam rotating clockwise at a uniform speed of 120 rpm. is required to give motion to knife follower as below:(a) Follower to move outwards through 40 mm during 120° of cam rotation with simple harmonic motion,(b) Follower to dwell for the next 60° of cam rotation,(c) Follower to return to its starting position during next 90° of cam rotation withuniformly accelerated motion, and(d) Follower to dwell for the rest of the cam rotation.The minimum diameter of the cam is...
A translating cam-follower is to be designed for a Rise-Dwell-Fall-Dwell (RDFD) application in which vibrations must be considered
A translating cam-follower is to be designed for a Rise-Dwell-Fall-Dwell (RDFD) application in which vibrations must be considered. The cam is to move the follower from 0 to 35 mm in 70°, dwell for 100, fall back to 0 mm in 80°, and dwell for the remainder of the cycle. In addition, the cam must rotate at an angular velocity of 60 RPM. The position (s), velocity (v), and acceleration (a) curves during the rise period are defined by the...
Calculate angle and lift for each segment.
A plate cam with a reciprocating follower is to rotate clockwise at 400 rev/min. The follower is to dwell for 60° of cam rotation, after which it is to rise to a lift of 2.5 in. During 1 in of the return motion, it must have a constant velocity of -40 in/s. Recommend standard cam motions from Sec. 6.7 to be used for high-speed operation, and determine the corresponding lifts and cam rotation...
2. (8 points) A cam with a knife-edge follower has a motion with the following characteristics: lift = 50 mm base circle radius = 25 mm outstroke = 110 degrees cam rotation with cycloidal motion first dwell = 80 degrees return stroke = 90 degrees with simple harmonic motion Cam rotates at 550 rpm in CCW direction Determine the maximum velocity and acceleration of the follower during outstroke and return stroke.
Consider a cam with a roller follower. The cam displacement curve is in the given order: i. for 45 degrees, a sinusoidal rise of 1 in ii. for 75 degrees, a dwell iii. for 60 degrees, a cycloidal return of 1 in iv. for 180 degrees, a dwell During the motion, the velocity is continuous but not necessarily the acceleration. a) Assume a constant cam speed of 1200 rpm. Find the maximum magnitude of the velocity (in inch/s) and acceleration...
Please be sure that the SCALE is 1:1
. CAM DESIGN lower type. Knife-edged follower • Lift = 26 mm • Base circle radius = 28 mm Outstroke: Cycloidal motion for 120° cam rotation Dwell for 750 • Return stroke: Simple harmonic motion for 100° cam rotation • Dwell for the remaining 650 Cam rotates at 600 rpm in CW direction Cam shaft diameter: 18 mm • Cam thickness: 4+1 mm Draw the Displacement-Time (O) diagram. Use 1:1 scale. Draw...
10 Marks Question Five A cam drives a flat-faced follower. It is designed for.a zero lift from 0 to 70 degrees and for a harmonic in the rise from 70 to 150 degrees. It then dwells at 40 mm lift for cam angles from 150 deg to 250 deg. Followed by a return with a uniform-motion follower displacement from 250 to 360 degrees. If the cam angular velocity is constant ot 1000 rpm, determine 40.0 70 100 150 200 250...
2. Using cycloid curves to design a disk cam to give uniform acceleration and deceleration to a pointed follower with a pinion wheel radius Ro-0.5 in and an eccentricity 80.2 in. The base radius of the disk cam is R,-5. The follower will rise 3 in. while the cam turn through 120°, dwell for 80°, and fall 3 in. for 120°, and dwell for the remaining 40°. Explicitly express the pressure angle over a complete revolution. Do we have any...
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