DESIGN OF MACHINERY
6th Edition
ISBN: 9781260113310
Author: Norton
Publisher: RENT MCG
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Chapter 2, Problem 2.34P
To determine
The mobility and the type of
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Crank Rocker mechanism, Link 1= 177.8 mm; Link 2 = 228.6 mm; Link 3 = 76.2 mm and
Link 4 = 203.2 mm. If the angular position of Link 2 is 85.22°
find the possible angular positions of Link 3 and Link 4 using graphical method.
Write and draw the following grashof's criterion and kind of grashof's four-bar mechanism such as;
1. Crank-rocker mechanism;
2. Drag link mechanism;
3. Double rocker mechanism;
4. Crossover-position or charge-point mechanism;
5 Triple rocker mechanism (non-grashof).
Use technical Pen for the following:
0.2(light -for linkages and hand writing),
0.4(medium - for joints),
0.6(heavy - for fixed link or frames)
use 2-4-4 template, all caps, italicized.
Q1/ Number the links on two of the mechanisms shown in Figures (1 & 2 & 3 & 4 & 5) then, calculate the number of
degrees of freedom.
FIG. 1
FIG. 1
FIG. 2
FIG. 1
FIG. 3
Bo
16
Chapter 2 Solutions
DESIGN OF MACHINERY
Ch. 2 - Find three (or other number as assigned) of the...Ch. 2 - How many DOF do you have in your wrist and hand...Ch. 2 - How many DOF do the following joints have? Your...Ch. 2 - How many DOF do the following have in their normal...Ch. 2 - Are the joints in Problem 2-3 force closed or form...Ch. 2 - Describe the motion of the following items as pure...Ch. 2 - Calculate the mobility of the linkages assigned...Ch. 2 - Identify the items in Figure P2-1 as mechanisms,...Ch. 2 - Use linkage transformation on the linkage of...Ch. 2 - Prob. 2.10P
Ch. 2 - Use number synthesis to find all the possible link...Ch. 2 - Prob. 2.12PCh. 2 - Use linkage transformation to create a 1-DOF...Ch. 2 - Use linkage transformation to create a 1-DOF...Ch. 2 - Calculate the Grashof condition of the fourbar...Ch. 2 - Prob. 2.16PCh. 2 - Describe the difference between a cam-follower...Ch. 2 - Examine an automobile hood hinge mechanism of the...Ch. 2 - Find an adjustable arm desk lamp of the type shown...Ch. 2 - The torque-speed curve for a 1/8 hp permanent...Ch. 2 - Find the mobility of the mechanisms in Figure...Ch. 2 - Find the Grashof condition and Barker...Ch. 2 - Find the rotatability of each loop of the...Ch. 2 - Find the mobility of the mechanisms in Figure...Ch. 2 - Find the mobility of the ice tongs in Figure P2-6:...Ch. 2 - Prob. 2.26PCh. 2 - Prob. 2.27PCh. 2 - Find the mobility of the corkscrew in Figure P2-9.Ch. 2 - Figure P2-10 shows Watts sun and planet drive that...Ch. 2 - Figure P2-11 shows a bicycle handbrake lever...Ch. 2 - Figure P2-12 shows a bicycle brake caliper...Ch. 2 - Find the mobility, the Grashof condition, and the...Ch. 2 - The approximate torque-speed curve and its...Ch. 2 - Prob. 2.34PCh. 2 - Prob. 2.35PCh. 2 - Sketch the equivalent linkage for the cam and...Ch. 2 - Describe the motion of the following rides,...Ch. 2 - For the mechanism in Figure P2-1 a, number the...Ch. 2 - Repeat Problem 2-38 for Figure P2-1b.Ch. 2 - Repeat Problem 2-38 for Figure P2-1c.Ch. 2 - Prob. 2.41PCh. 2 - Find the mobility, the Grashof condition, and the...Ch. 2 - Find the mobility, the Grashof condition, and the...Ch. 2 - Figure P2-20 shows a Rube Goldberg mechanism that...Ch. 2 - All the eightbar linkages in Figure 2-11 part 2...Ch. 2 - Prob. 2.46PCh. 2 - Prob. 2.47PCh. 2 - Find the mobility of the mechanism shown in Figure...Ch. 2 - Find the mobility of the mechanism shown in Figure...Ch. 2 - Find the mobility of the mechanism shown in Figure...Ch. 2 - Find the mobility of the mechanism shown in Figure...Ch. 2 - Prob. 2.52PCh. 2 - Prob. 2.53PCh. 2 - Repeat Problem 2-38 for Figure P2-1f.Ch. 2 - Repeat Problem 2-38 for Figure P2-1g.Ch. 2 - For the example linkage shown in Figure 2-4 find...Ch. 2 - For the linkage shown in Figure 2-5b find the...Ch. 2 - Prob. 2.58PCh. 2 - Figure P2-21b shows a mechanism. Find its mobility...Ch. 2 - Prob. 2.60PCh. 2 - Figure P2-21 d shows a log transporter. Draw a...Ch. 2 - Figure P2-21e shows a plow mechanism attached to a...Ch. 2 - Figure P2-22 shows a Hart inversor sixbar linkage....Ch. 2 - Figure P2-23 shows the top view of the partially...Ch. 2 - Figure P2-24a shows the seat and seat-back of a...Ch. 2 - Figure P2-24b shows the mechanism used to extend...Ch. 2 - Figure P2-24b shows the mechanism used to extend...Ch. 2 - Figure P2-25 shows a sixbar linkage. Is it a Watt...Ch. 2 - Use number synthesis o find all the possible link...Ch. 2 - Use number synthesis to find all the possible link...Ch. 2 - Prob. 2.71PCh. 2 - For the mechanism in Figure P2-26, number the...Ch. 2 - Figure P2-27 shows a schematic of an exercise...Ch. 2 - Calculate the mobility of the linkage in Figure...Ch. 2 - Calculate the Grashof condition of the fourbar...Ch. 2 - The drum brake mechanism in Figure P2-4g is a...
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- 6. Determine the centrodes of a slider-crank mechanism, whose crank length, OÂA, is equal to the connecting rod length, AB. as shown in Figure 6. A ОА Figure 6 B Note (to be read after completing the problem): The two circular centrodes are known as the Cardan circles; the smaller is half the diameter of larger and rolls inside it.arrow_forwardCan someone draw grashof's mechanism: Crank-rocker Mechanism in ENGINEERING DRAWING FORMAT basing with the picture attached. Use Technical Pens for drawing: 0.2(light -for linkages and hand writing), 0.4(medium - for joints), 0.6(heavy - for fixed link or frames) Thank you!arrow_forwardThe number of degrees of freedom of the linkage shown in the figure.arrow_forward
- A series of three links is given with lengths of 2.4 ", 7.2" and 3.4 ", select the length of a fourth link, that when assembling the mechanism one of the links can be driven by a motor that rotates continuously. Mechanism is according to Grashoff, show all your operations to justify your resultsarrow_forward4-71. For the shaft shown in Figure P4-71, compute the angle of twist of pulleys B and C relative to A. The steel shaft has a diameter of 35 mm throughout its length. The torques are T = 1500 N- m, T, = 1000 N.m, T 500 N. m. The lengths are L = 500 mm, L,=800 mm. %3D %3D %3Darrow_forward0340 030- 0100 Ø160 280 60 --030 -775 Kinematic Diagram of a Slider-Crank Mechanism (Figure 1-01) A. Draw the line diagram B. Compute the degree of freedom C. Label the parts -160- 020 065 $10 5 65 5arrow_forward
- The figures below show a mechanism for a crushing machine with a kinematic diagram. The aim is to determine the number of li joints , half joints and DOF (Mobility) of the system, in addition, the drawing of the kinematic diagram must be checked. + 230 mm 230 mm 60 mm 25° Crank 180 mm 250 mm 320 mm Crushing ram 250 mm 180 mm 250 mmarrow_forwardIndicate the limbs with numbers and the joints with letters on the mechanism whose kinematic diagram is given below. Write the types of joints. Calculate the degrees of freedomarrow_forwardb) You are given a set of six links. The lengths of the links are as follows: 6.3cm, 9.1cm,12.4cm,15.6cm,20cm,40.2cmSketch a crank-rocker mechanism you can realize using a selection of four links from the set.arrow_forward
- How many DOF do the following joints have? Sketch careful kinematic diagrams and find their their degrees of freedom. a. Your kneeb. Your anklec. Your shoulderd. Your hipe. Your knucklearrow_forwardPlease draw the Kinematic diagram with joints and links, then solve the problemarrow_forwardShow how you would find the velocity of each point (no values given just the equation) for an overlapping/superimpose 4 bar linkage. Find the equation for 60 degree.arrow_forward
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