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Question 1 L01) Match the following processes with a suitable attribute Turning a does not use...
a) A workpiece (φ-75 mm, 1 275 mm) is machined using turning at a feed rate of 0.25 mm/rev. At a cutting speed- 3.5 m/s, the turning tool is ineffective after machining 3 parts, and at a cutting s...
a) A workpiece (φ-75 mm, 1 275 mm) is machined using turning at a feed rate of 0.25 mm/rev. At a cutting speed- 3.5 m/s, the turning tool is ineffective after machining 3 parts, and at a cutting speed = 2.5 m/s, the turning tool is effective for producing 20 parts. Calculate the Cutting Speed that will allow 30 parts to be machined between tool changes [20 marks] b) An aluminium alloy workpiece (tensile strength - 325 N/mm2 and yield...
During a turning operation on a lathe using a grooved tool, the following forces were recorded:...
During a turning operation on a lathe using a grooved tool, the
following forces were recorded:
Group
1
2
3
4
5
6
Feed force, Fx (kN)
1.70
1.68
1.59
1.75
1.67
1.64
Radial force, Fy (kN)
1.32
1.39
1.44
1.42
1.45
1.38
Tangential force, Fz (kN)
2.18
2.37
2.38
2.32
2.29
2.33
The machine set-up includes a feed (s) of 0.24 mm/rev. and the
depth of cut (d) of 2.5 mm.
Tool rake angle ()
= - 6 deg....
1. A certain work material has shear strength of = 50,000 lb/in. An orthogonal cutting operation...
1. A certain work material has shear strength of = 50,000 lb/in. An orthogonal cutting operation is performed using a tool with a rake angle = 20° at the following cutting conditions: cutting speed - 100 ft/min, chip thickness before the cut = 0.015 in, and width of cut = 0.150 in. The resulting chip thickness ratio = 0.50. Determine (a) The shear plane angle; (b) Shear force; (c) Cutting force and thrust force, and (d) Friction force. 2.1 The...
Question 1 A turning operation is carried out on aluminum. Based on the specific energy values...
Question 1 A turning operation is carried out on aluminum. Based on the specific energy values in Table 20.2, determine material removal rate and cutting power in the operation under the following sets of cutting conditions: (a) Cutting speed 5.6 m/s, feed 0.25 mm/rev, and depth of cut 2.0 mm; and (b) cutting speed- 1.3 m/s, feed 0.75 mm/rev, and depth 4.0 mm. Question 2 Consider a turning operation performed on steel whose hardness 225 HB at a cutting speed...
Question 1 Which of the following might not be considered an attribute for a User class:...
Question 1 Which of the following might not be considered an attribute for a User class: Select one: a. Logon b. Username c. Password d. Email Question 2 Which is a tool of scenario-based modeling? Select one: a. All of these b. Swimlane Diagram c. Activity Diagram d. Use-Case Diagram Question 3 What are characteristics of attributes? Select one: a. All of these b. Information needed for the class to perform work c. Information that appears naturally owned by the...
Problem 1 Consider the drilling of Feature 3 (Thru Hole) on the flashlight head (Figure 1)...
Problem 1 Consider the drilling of Feature 3 (Thru Hole) on the flashlight head (Figure 1) Assume the feed of the drilling opcration (i.e., the distance the drill penetrates per unit revolution) is,f= 0.01 inrev. " a) Calculate the material removal rate (in in3/s or mm3/s). b) Use the Taylor Tool Life equation to estimate the tool life (in minutes) for this operation. Use Table 1 to pick appropriate values of C and n (the flashlight material is aluminum and...
Question 1 2) Manufacturing processes can be classified into 2 (Two) major groups. Briefly describe the...
Question 1 2) Manufacturing processes can be classified into 2 (Two) major groups. Briefly describe the characteristics of each group. Aid your answer with hierarchy. (10 marles) 1) Sand casting is a process for casting metal in sand molds. Explain FIVE (3) sand casting benefits to the industry (marks) Riser, also known as feeder, is an important part in a sand mold. Briefly describe the function of a riser in a sand casting mold Hence, illustrate the possible types and...
Question 18 (6 points, 1 point for each correct answer): Match the following processes (designated I,...
Question 18 (6 points, 1 point for each correct answer): Match the following processes (designated I, II, or III) that represent various types of transport across a biological membrane with the statements designated A-D: 1. Water diffusion through the lipid bilayer of the biomembrane. II. Glucose transport via the glucose transporter in the plasma membrane. III. Pumping of protons across the lysosome membrane by a proton pump similar to the ATP-synthase complex. Write down your answers in the blank space...
Question 17 (1 point) Through which of the following processes does an innovation stream move from...
Question 17 (1 point) Through which of the following processes does an innovation stream move from one technology cycle to another? a) technological substitution b) technological variation O c) technological continuity o d) technological selection Question 18 (1 point) Saved Which of the following countries has the largest foreign direct investment in Canada? a) China Ob) Scotland Oc) Mexico d) United Kingdom
Computer Numerical Machines (CNC machines) are advanced machines consisting of different types(turning and milling) that are...
Computer Numerical Machines (CNC machines) are advanced machines consisting of different types(turning and milling) that are utilized for part cutting and design. They categorize under subtractive manufacturing, while 3d printers and scanners branch from additive manufacturing. For the process of cutting any certain part to achieve a desired shape, the first step begins with design, to finally reach the manufacturing procedure. Accordingly, you are required to choose a part (the part does not need to be related to engineering, any...
a) A workpiece (φ-75 mm, 1 275 mm) is machined using turning at a feed rate of 0.25 mm/rev. At a cutting speed- 3.5 m/s, the turning tool is ineffective after machining 3 parts, and at a cutting speed = 2.5 m/s, the turning tool is effective for producing 20 parts. Calculate the Cutting Speed that will allow 30 parts to be machined between tool changes [20 marks] b) An aluminium alloy workpiece (tensile strength - 325 N/mm2 and yield...
During a turning operation on a lathe using a grooved tool, the
following forces were recorded:
Group
1
2
3
4
5
6
Feed force, Fx (kN)
1.70
1.68
1.59
1.75
1.67
1.64
Radial force, Fy (kN)
1.32
1.39
1.44
1.42
1.45
1.38
Tangential force, Fz (kN)
2.18
2.37
2.38
2.32
2.29
2.33
The machine set-up includes a feed (s) of 0.24 mm/rev. and the
depth of cut (d) of 2.5 mm.
Tool rake angle ()
= - 6 deg....
1. A certain work material has shear strength of = 50,000 lb/in. An orthogonal cutting operation is performed using a tool with a rake angle = 20° at the following cutting conditions: cutting speed - 100 ft/min, chip thickness before the cut = 0.015 in, and width of cut = 0.150 in. The resulting chip thickness ratio = 0.50. Determine (a) The shear plane angle; (b) Shear force; (c) Cutting force and thrust force, and (d) Friction force. 2.1 The...
Question 1 A turning operation is carried out on aluminum. Based on the specific energy values in Table 20.2, determine material removal rate and cutting power in the operation under the following sets of cutting conditions: (a) Cutting speed 5.6 m/s, feed 0.25 mm/rev, and depth of cut 2.0 mm; and (b) cutting speed- 1.3 m/s, feed 0.75 mm/rev, and depth 4.0 mm. Question 2 Consider a turning operation performed on steel whose hardness 225 HB at a cutting speed...
Problem 1 Consider the drilling of Feature 3 (Thru Hole) on the flashlight head (Figure 1) Assume the feed of the drilling opcration (i.e., the distance the drill penetrates per unit revolution) is,f= 0.01 inrev. " a) Calculate the material removal rate (in in3/s or mm3/s). b) Use the Taylor Tool Life equation to estimate the tool life (in minutes) for this operation. Use Table 1 to pick appropriate values of C and n (the flashlight material is aluminum and...
Question 1 2) Manufacturing processes can be classified into 2 (Two) major groups. Briefly describe the characteristics of each group. Aid your answer with hierarchy. (10 marles) 1) Sand casting is a process for casting metal in sand molds. Explain FIVE (3) sand casting benefits to the industry (marks) Riser, also known as feeder, is an important part in a sand mold. Briefly describe the function of a riser in a sand casting mold Hence, illustrate the possible types and...
Question 18 (6 points, 1 point for each correct answer): Match the following processes (designated I, II, or III) that represent various types of transport across a biological membrane with the statements designated A-D: 1. Water diffusion through the lipid bilayer of the biomembrane. II. Glucose transport via the glucose transporter in the plasma membrane. III. Pumping of protons across the lysosome membrane by a proton pump similar to the ATP-synthase complex. Write down your answers in the blank space...
Question 17 (1 point) Through which of the following processes does an innovation stream move from one technology cycle to another? a) technological substitution b) technological variation O c) technological continuity o d) technological selection Question 18 (1 point) Saved Which of the following countries has the largest foreign direct investment in Canada? a) China Ob) Scotland Oc) Mexico d) United Kingdom
Computer Numerical Machines (CNC machines) are advanced machines consisting of different types(turning and milling) that are utilized for part cutting and design. They categorize under subtractive manufacturing, while 3d printers and scanners branch from additive manufacturing. For the process of cutting any certain part to achieve a desired shape, the first step begins with design, to finally reach the manufacturing procedure. Accordingly, you are required to choose a part (the part does not need to be related to engineering, any...
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