Assume that, in orthogonal cutting, the rake angle, α , is 20° and the friction angle, β , is 35° at the chip–tool interface. Determine the percentage change in chip thickness when the friction angle is 45°. [Note: do not use Eq. (21.4) or Eq. (21.5).]

Q: 22.27 Why are chemical stability and inertness important in cutting tools?

A: Cutting tool  material is used to remove material from workpiece by cutting Process. Cutting Tool…

Q: What are the major properties required of cutting-tool materials? Why?

A: Major properties required of cutting-tool materials: Hot hardness: The cutting tool material should…

Q: Describe the effects that a dull tool can have on cutting operations

A: The effects that a dull tool can have on the cutting operation are: 1. Cutting power will increase.…

Q: What is the function of chip breakers? How do they function? Do you need a chip breaker

A:

Q: In Example 21.3, if the cutting speed V is doubled, will the answer be different? Explain.

A: Solution:

Q: Using the Taylors tool life equation with exponent n = 0.5, if the cutting speed is reduced by 50%…

A: Given Data n=0.5 V2=0.5V1

Q: During orthogonal cutting operation of material has shear strength 95.5 Mpa. The cutting force is…

A:

Q: Which tool-material properties are suitable for interrupted cutting operations? Why?

A: Cutting process involves removal of material from workpiece with a relatively harder material known…

Q: Question 4. The following data are available from orthogonal cutting experiments. The depth of cut…

A: When the cutting edge is perpendicular to the machined surface, the cutting executed is termed…

Q: List the factors that contribute to poor surface finish in cutting.

A: It is required to enlist the factors that contribute to poor surface finish in cutting

Q: 3) The following data are available from orthogonal cutting experiment, Depth of cut t, = 0.13 mm,…

A:

Q: 21.51 Taking carbide as an example and using Eq. (21.24), determine how much the feed should be…

A: Write the given relation for mean temperature. Tmean∝vafb According to the problem, the mean…

Q: 2 Using trigonometric relationships, derive an expression for the ratio of shear energy to…

A: we know thatformula for shear energy is given byμs=FSVSwtVthe specific energy for friction is given…

Q: 21.21 Explain why studying the types of chips produced is important in understanding cutting…

A: Understanding of Types of chips produced in cutting operations

Q: 22.36 Referring to Table 22.1, state which tool materials would be suitable for interrupted cutting…

A: Tool materials would be suitable for interrupted cutting operations :-

Q: 2 1.46 Explain why the power requirements in cutting depend on the cutting force but not the thrust…

A: The cutting force magnitude is much higher than the thrust force.

Q: 39- An orthogonal cutting operation is being carried out under the following conditions: t0-D0,38…

A: Givent0=0.38mmtc=0.65mmwidth of cut=2.5mmV=3.5m/srake angle=6°Fc=515NFt=210Nto find:-Percentage of…

Q: Differentiate between orthogonal and oblique cutting.explain the importance of each

A: Orthogonal cutting process: During the cutting process, when the cutting edge of the tool is…

Q: 2 1.49 Assume that, in orthogonal cutting, the rake angle is 15° and the coefficient of friction is…

A:

Q: 22.25 Can cutting fluids have any adverse effects in machining? If so, what are they?

A: Generally,  cutting fluids are used for carrying away the heat generated. Cutting fluids can also…

Q: Why are tool temperatures low at low cutting speeds and high at high cutting speeds?

A: Solution:

Q: The cutting force increases with the depth of cut and decreasing rake angle. Explain why

A: Depth of Cut:- When the depth of cut increase, then the amount of material removed in a unit time…

Q: Why does the temperature in cutting depend on the cutting speed, feed, and depth of cut? Explain in…

A: Cutting speed is defined as the speed at which the work moves with respect to the tool. Feed rate is…

Q: 22.29 Describe the necessary conditions for optimal utilization of the capabilities of diamond and…

A:

Q: If shear strength is 6000 kg/cm2, width of cut is 10mm, cutting speed is 30 m/min, coefficient of…

A: Given:shear strength,ζ=6000 Kg/cm2  =6000*9.8110-4ζ=588.6 MPab=10 mmVelocity of cutting,V=30…

Q: Why do you think the maximum temperature in orthogonal cutting is located at about the middle of the…

A: It is reasonable that the maximum temperature in orthogonal cutting is located at about the middle…

Q: A tool with zero rake angle used in orthogonal cutting when its clearance angle a is changed from 10…

A: Given:initial rake angle, α1=10ofinal rake angle, α2=7o

Q: An orthogonal cutting operation is being carried out under the following conditions: t0-D0,38 mm,…

A: Given data:-uncut chip thickness, t=0.38mmchip thickness, tc=0.65mmwidth of cut, b=2.5mmcutting…

Q: 21.62 Using Eq. (21.30), select an appropriate feed for R = 1 mm and a desired roughness of 0.5 μ m.…

A: The roughness Ra is given by:- Ra =f28RWhere,f=feedR=radiusSubstituting Ra =0.5 μm,  R = 1mm in the…

Q: List and explain the considerations involved in determining whether a cutting tool should be…

A: We need to consider about the structural, economic, and environmental aspects.

Q: 22.48 H ow would you go about measuring the effectiveness of cutting fluids? Describe your method…

A: The primary functions of the cutting fluid are: Heat dissipation for the place where machining is…

Q: Why were cutting-tool inserts developed?

A: Let us discuss in detail about cutting tool inserts in metal tools used for metal cutting…

Q: to remove more material betwee

A: The distance (ft) the tool travels before it reaches the end of its life (a specified wear land) is…

Q: Write down the steps required to proof the mathematical relation for SHEAR PLANE ANGLE in Orthogonal…

A:

Q: According to orthogonal cutting model, Determine: 1-Dynamic yield strength of work material. 2-…

A:

Q: An orthogonal cutting operation is being carried out under the following conditions: t0=0.38 mm,…

A: Given, Uncut chip thickness = t0 = 0.38 mm Chip thickness = t = 0.65 mm Width of the cut = b = 2.5…

Q: State whether or not the following statements are true, explaining your reasons: (a) For the same…

A: a) For the same shear angle, there are two rake angles that give the same cutting ratio,…

Q: A turning operation is carried out on aluminum. Based on the specific energy values in Table 17.2,…

A:

Q: 1.53 An orthogonal cutting operation is being carried out under the following conditions: to = 0.1…

A: to=0.1 mmtc=0.2 mmV=3 m/sα=10oFc=500 NFt=200 N

Q: Why should we be interested in the magnitude of the thrust force in cutting?

A: Why should we be interested in the magnitude of the thrust force in cutting

Q: What is the cutting ratio? Is it always less than 1?explain

A: Cutting ratio (r): Cutting ratio is defined as the ratio of thickness of metal before cutting that…

Q: Show that, for the same shear angle, there are two rake angles that give the same cutting ratio

A:

Q: 5. What are the adverse effects of tool wear in cutting processes?

A: As per the company policy, we are restricted to solve one question at a time. Please ask other…

Q: What are the effects of performing a cutting operation with a dull tool? A very sharp tool?

A: Solution:

Q: Problem 10.21 Estimate the time required for one complete cut on a workpiece of length 350 mm and…

A:

Machining Processes and Machine Tools

Machining is represented as the process in which an excessive amount of substance is eliminated from the particular element in the form of pieces. In machining, cutting tools such as rotary tools, lathe, drill press, grinder, chop saw, welders, and many more are applied to get the desired shape. As compared to other manufacturing processes, machining is precise and versatile.