1. Technician is turning (lathing) a work material with shear strength of 250 MPa as shown in Fig.1. The following conditions are used: v = 4.0 m/s, ƒ = 0.25 mm/rev, d = 3.0 mm, and rake angle = 8° in the direction of the chip flow. The resulting chip ratio = 0.5. Chip Tool R N R/Fn Work Figure 1: Turning process. Using the orthogonal model as an approximation of turning, you have been asked to determine: (a) Shear plane angle. (b) Material removal rate. (c) Shear strain (d) Shear force. (e) Cutting force and thrust force.

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Q: a) Define specific energy for plane strain machining (cutting).  b) In plane-strain orthogonal…

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Q: . Draw the forces and angles involved in the cutting process and calculate shear angle (Ø), friction…

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Q: Draw the forces and angles involved in the cutting process and calculate shear angle (Ø), friction…

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Q: M Taylor's tool life equation VT"=C, where v in my min I in min. Im a turning operation, two tools X…

A: Taylor's Tool-life equation ,  VTn=CFor tool X  :− n=0.3,C=60For tool Y :− n=0.6,C=90Given…

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Q: a) Define what is meant by "selective assembly" and briefly explain why it is used and give one…

A: (a) Selective assembly  Process capability = 4 ( desired tolerance )     For example 0.4  = 4 * 0.1…

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.