Question

Objective: The following figures represent model views in an engineering drawing. First, inspect each cross-section and write down observations about the geometry le... shape is square, all rounds are equal in size, etc.). Second, determine the DOF of curves. Third, determine the DOF removed by constraints (e.8., 1 pair of parallel lines removes 1 DOF, etc.). Finally, calculate the number of dimensions needed to specify the size, location, and orientation of the cross-section and its features. =") Step 0: Observations 0 Square shape (opposite sides ae ) hojacent sides ove I adjacent sides or @ 4 cuces ave equal ③ 4 cheater ac same size. are & circle concentric ③ smooth tonitate tween line dac 6 xulonast orenttught not Step 1: DOF of Curves 04lines x 4 =1600T ♡ & circle x3 =1807 o 4 arcs X5=20 Total = 48D OF Step 2: DOF Removed by Constraints Step 3: Number of Dimensions Needed 2 podiel - ZDF I perponaticul doi o 48-Cor21 Lequalside = IPOT. = 300T 3 eg ut sit 3PF * Begal side pais - 3D 4 concentric Soka3 6 8 Gincidat HD of 8 tongent spor @ sketch ground: 2DT 450€

first one is example.
i need to solve second picture. 3,4 picture apply to step 1 and 2. that is CAD problems thanks

Answer 1

OBSERVATIONS

1.it is kind of rectangle with sides replaced by curves.

2.Opposite curves are equal

3.It has 4 circles of same size

4. smooth transition between curves

5. corner curves have a common centre point, inside the figure.

DOF OF CURVES 8 arcs x 5 = u circles x 3 = total 40 12 52

DOF REMOVED co oo x 2 8 XL Coincidince Point Tangency point Symmetric Point Concentric Point Equal Size - 4 x 2 = 8 Ty XL

COINCIDENCE POINT COINCIDENCE POINT $ } = 8 Pein = 8 Points TANGENCY POINT 8 POINTS Symmetric Point 4 Symmetries 4 symmetries Concentric Point 4 POINTS corner curves with circles EQUAL SIZE

NUMBER OF DIMENSIONS= 52-48=4