Determine the x- and y-coordinates of the mass center of the homogeneous plate of uniform thickness t = 0.25 in. Assume b = 35 in., h = 16 in. Answers: x= y= i x = ky² h Thickness t in.

b) An orthogonal cutting operation is performed using a rake angle of 15°, and having a chip thickness before the cut = 0.3 mm and width of cut = 2.5 mm. The chip thickness ratio is measured after the cut to be 0.55. Determine the following: i) the chip thickness after the cut, ii) shear angle, iii) friction angle, iv) coefficient of friction, and v) shear strain.

Read the description of the operations required to make a part, and considering the production rate, select a machine or machines to do the job Note: "Transverse" means perpendicular to the axis of rotation v Part requires turning, drilling, boring, and parting off, at a production rate of a. A swiss automatic or a CNC lathe with a live center in the tailstock, and possibly 10,000 parts per month. a steady rest Part requires turning, drilling, boring, and parting off, at a production rate of b.A manual lathe with no special fixturine 10 parts per month. v Part requires turning, drilling, boring, and parting off plus a transverse hole, d.A manual lathe, followed by setup on a manual milling machine at a production rate of 10,000 parts per month, • Part requires turning, drilling, boring, and parting off, plus a transverse hole, at a production rate of 10 parts per month. v Parts are very slender and require high precision for turning and parting off, at a rate of 10,000 parts per month…

Q.1) An arrangement of three boxes is shown in figure below. Box A weighs 20 N and rests on an inclined plane, while box B weighs 40 N and rests on a horizontal plane. The coefficient of friction between box A and the inclined plane is 0.25, and between box B and the horizontal plane is 0.35. The pulleys are all frictionless. Determine the range of weight of box C for which no motion will occur. -0.7 m 40 N 1 m 0.5 m 0.6 m B 20 N 0.7 m A 4 5

Investigate the non-traditional machining methods. Describe each in your own words and sketch out the process and appropriate scale (inches/microns etc). Then tabulate the material removal mechanism, workpiece materials, applications, costs/speed, advantages and limitations/disadvantages of each. The slides are for your starting point. List references, articles, videos, etc... Mechanical Methods 1. Water Jet Machining (WJM) 2. Abrasive Water Jet Machining (AWJM) 3. Ultrasonic Machining (USM) Non-Mechanical Methods 1. Electrochemical Machining (ECM) 2. Electro-Discharge Machining (EDM) 3. Wire EDM 4. Laser Drilling 5. Electron beam machining (EBM)

A circular shape blank will be cut of 100 mm diameter from a strip of 2.8 mm with a clearance value of 0.25 mm. Take the shear strength as 400 MPa. Determine a) The appropriate punch diameter. b) Blanking force. c) Blanking force when the blade angle is (5)°.

A HSS tool is used to turn a steel workpart that is 300 mm long and 80 mm in diameter. The parameters in the Taylor equation are: n = 0.13 and C = 75 (m/min) for a feed of 0.4 mm/rev. The operator and machine tool rate = $30.00/hr, and the tooling cost per cutting edge = $4.00. It takes 2.0 min to load and unload the workpart and 3.50 min to change tools. Determine: Tutting speed for maximum production rate, Tool life in min of cutting, and Cycle time and cost per unit of product. determine cutting speed for minimum cost.

A HSS tool is used to turn a steel workpart that is 300 mm long and 80 mm in diameter. The parameters in the Taylor equation are: n=0.13 and C= 75 (m/min) for a feed of 0.4 mm/rev. The operator and machine tool rate = $30.00/hr, and the tooling cost per cutting edge = $4.00. It takes 2.0 min to load and unload the workpart and 3.50 min to change tools. Determine: a. Tutting speed for maximum production rate, b. Tool life in min of cutting, and c. Cycle time and cost per unit of product.