2. The following data was obtained from an orthogonal cutting test:Rake angle = 20°Cutting speed = 100 m/minChip length before cutting = 29.4 mmChip length after cutting = 12.9 mmVertical cutting force1050 NHorizontal cutting force = 630 NUsing Merchant's analysis, calculate(a) resultant force(c) friction force and friction angle(b) shear plane angle(d) total work done

Note: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts…

The following data was obtained from an orthogonal cutting test: Rake angle = 20° Chip length before cutting = 29.4 mm Vertical cutting force = 1050 N Using Merchant's analysis, calculate (a) resultant force (b) shear plane angle Cutting speed 100 m/min Chip length after cutting = 12.9 mm Horizontal cutting force = 630 N (c) friction force and friction angle (d) total work done

The following data was obtained from an orthogonal cutting test: Rake angle = 20° Chip length before cutting = 29.4 mm Vertical cutting force = 1050 N Using Merchant's analysis, calculate (a) resultant force (b) shear plane angle Cutting speed 100 m/min Chip length after cutting = 12.9 mm Horizontal cutting force = 630 N (c) friction force and friction angle (d) total work done

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

1. Most common instrument used in the mechanical gages is the dial indicator, which of the following applications cannot be measured by the dial indicator? (a) All of them (b) Perpendicularity (c) Runout (d) Circularity (e) Roughness 2. The main mechanism for the flank wear on the single point cutting tool is: (a) Oxidation wear (b) Adhesion wear (c) None of them (d) Diffusion wear (e) Plastic deformation 3. Higher cutting speeds and temperatures are the main mechanism of the following tool wear mechanism: (a) Diffusion wear (b) Abrasion wear (c) None of them (d) Adhesion wear (e) Plastic Deformation
2) In an orthogonal cutting operation, the cutting tool has a rake angle = 20°. The chip thickness before the cut = 0.25 mm. If the cutting force and thrust force are measured during an orthogonal cutting operation with values, Fc = 1450 N and Ft = 1990 N. The width of the orthogonal cutting operation w = 2.5 mm. the friction angle B is = 79.91° Determine: The Shear Angle The Shear Strain The Shear Strength of the material The Force of Friction
1) In an orthogonal cutting operation, the cutting tool has a rake angle = 15°. The chip thickness before the cut = 0.20 mm and the chip thickness after the cut tc = 0.8 mm. If the cutting force and thrust force are measured during an orthogonal cutting operation with values, Fc = 2000 N and Ft = 1890 N. The width of the orthogonal cutting operation w = 2.5 mm. Determine: The Shear Angle The Shear Strain The Shear Strength of the material The Force of Friction The friction angle
QUESTION 22 A hydraulic metal stamping machine must produce 12,000 parts per 8 hour shift The force versus position curve for a typical part production is provided below. How much power must be supplied to the machine if it is known that only 73% of the supplied power goes directly into stamping parts? (The rest is in retracting the tooling and wasted as heat.) Answer in watts. Stamping Operation Actuator Force Vs Position Data 70 60 50 40 30 20 10 10 20 30 40 Actuator Extension (mm) Actautor Force (kN)
Q2:- Tool life tests in turning yield the following data: (1) v = 100 m/min, T = 10 min; (2) v = 75 m/min, T = 30 min. (a) Determine the n and C values in the Taylor tool life equation. Based on your equation, compute (b) the tool life for a speed of 90 m/min, and (c) the speed corresponding to a tool life of 20 min Q3:- In an orthogonal cutting operation, the tool has a rake angle = 15°. The chip thickness before the cut = 0.30 mm and the cut yields a deformed chip thickness = 0.65s mm. Calculate (a) the shear plane angle and (b) the shear strain for the operation. Suppose the rake angle were changed to a= 0°. Assuming that the friction angle remains the same, determine (a) the shear plane angle, (b) the chip thickness, and (c) the shear strain for the operation.
A 5 m wide by 12 m long and 20 mm thick steel plate is to be cut into 8 equal parts lengthwise. If the cutting rate is 3.75 mm per stroke using a hacksaw with a speed of 200 rpm, how long will it take the job in hours. There is only one cut stroke per revolution. D O 1.78 O7.18 O 1.87
1) Orthogonal Cutting: In an orthogonal cutting test on mild steel, the following results are obtained: to = 0.3 mm tc = 0.7 mm w = 3 mm Fc = 1000 N FN = 500 N (Fp in your book) Tool rake y = 0 Calculate: a. Mean angle of friction ß on tool face b. Mean shear stress Ts
A cylindrical mild steel work piece of Ø55 X 200mm undergoes a turning operation on a lathe machine to reduce the diameter to Ø 45mm. The cutting parameters are 23 m/minute, 0.3 mm/ revolution and 0.5 mm are cutting speed, feed and depth of cut respectively. Determine the following. i) Time for single pass (minutes). ii) Find number of passes required to reduce the diameter from Ø55 to Ø45mm. iii) Total time required to complete the turning operation in minutes (Tfinal).
Question 1 An aluminium alloy component, is machined on a lathe. The lathe has a mechanical efficiency of 91%. The lathe performs a turning operation on the workpiece which has a diameter of 150 mm and a length of 400 mm. The shear strength of the aluminium alloy work piece is 230 MPa and the tensile strength is 420 MPa. To machine the component, the lathe operator uses a cemented carbide tipped tool, having a rake angle of 6°. Furthermore, the relevant processing parameters are selected from the relevant data provided in a handbook by the lathe tool supplier. Some of the data is reproduced in Tables 1 and 2. Table 1. Surface Cutting Speeds (m/min) Part Material Aluminium Brass Cast Iron Mild Steel Alloy High Speed 75 18 120 28 Steel Tool Material Cemented 180 100 220 170 Carbide Table 2. Typical recommended feeds for turning (mm/rev) Part Material Aluminium Brass Cast Iron Mild Steel Alloy High Speed 0.2 0.15 0.2 0.15 Тool Steel Material Cemented 0.3 0.25 0.4 0.25 Carbide The operator…
In an orthogonal cutting test with a bar of 75 mm diameter is reduced to 73 mm by using a HSS tool with arake angle  = 10o, following observations were made: length of the chip, lc = 69.44 mm, cutting ratio r =0.3, the horizontal component of the cutting force, FH = 1450 N, and the vertical component of the cuttingforce, FV = 850 N. The various parameters recorded in this cutting operation are: depth of cut, d = 2 mm;feed rate, f = 0.3 mm/rev, cutting speed, V = 60 m/min. Using Merchant’s theory calculate the following:1) Friction force along rake face2) Normal force acting on rake face3) Shear force along the shear plane4) Normal force acting on shear plane5) The percentage error in shear angle predicted by Merchant’s theory6) Shear velocity7) Chip velocity8) Total work done9) The shear work proportion out of the total work done10) The friction work proportion out of the total work done
7. A series of turning tests are performed to determine the parameters n, m, and K in the expanded version of the Taylor equation, Eq. (23.4). The following data were obtained during the tests: (1) cutting speed = 1.9 m/s, feed = 0.22 mm/rev, tool life = 10 min; (2) cutting speed = 1.3 m/s, feed = 0.22 mm/rev, tool life = 47 min; and (3) cutting speed = 1.9 m/s, feed = 0.32 mm/rev, tool life = 8 min. (a) Determine n, m, and K. (b) Using your equation, compute the tool life when the cutting speed is 1.5 m/s and the feed is 0.28 mm/rev.
Tuming tests were performed using a coated carbide tool on steel workpiece at feed of 0.30 mm/rev and the depth of cut 4.0 mm. The tests have resulted in 20-min tool life for a cutting speedv 165 m/min and a 60-min tl mie ie a speed v = a) The n and C values in the Taylor tool life equation b) The cubic cm of steel removed in each case 96 m/min. Determine: