1
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC SEMESTER-VII EXAMINATION WINTER 2018
Subject Code:X71902 Date: 19/11/2018
Subject Name: Production Technology
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

With neat sketch explain difference between orthogonal cutting and oblique cutting.
05

Explain five important properties of cutting tool material.
05

Calculate the percentage increase in tool life when cutting speed is reduced to half. The Taylor's tool life equation is given by VT0.5 400.
04
Q.2

Explain the principle of location to restrict the movement of job during
Machining to have accuracy.
07

Explain the types of tool wear and its mechanism.
07
OR

For an orthogonal cutting process on mild steel, following data were obtained.
Chip length 80 mm; Uncut chip length 200 mm; Width of chip 3 mm.
Depth of cut 0.42 mm; Rake angle of tool Horizontal component of cutting force 2000 N. Vertical component of cutting force 200 N.
Calculate the shear plane angle, chip thickness, friction angle, resultant cutting force, shear stress, shear strain and strain energy per unit volume.
07
Q.3

With respect to Drawing Die Design explain
Punch Radius Blank Size Drawing Speed Draw Clearance Ironing Force
07

With neat sketch of each explain Hinged Clamp, Quick Action Nut and Hydraulic Clamp.
07
OR
Q.3

Differentiate Jig and Fixture. State its merits and demerits.
07

Explain in brief Indexing Jig with help of suitable example.
07
Q.4

Draw Gear Tooth terminology and enlist various types of gears.
07

Explain Thread Milling process.
07
OR
Q.4

State the application of the following
Square thread ACME thread Multi start thread
Bevel gear Rack Pinion
07

List the various thread manufacturing processes and explain with neat sketch thread rolling
07
Q.5

What is PAM? Explain it in detail.
07

Explain the various parameters which affect the AJM process.
07
OR
Q.5

Discuss the various types of multi spindle automates.
07

Classify the Non-conventional machining processes in detail.
07