Design of Tools, Jigs and Fixtures

Teacher

Santosh Patro

Category

Core Courses

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Design of Tools, Jigs and Fixtures (CUTM1086)

(Credits: 2-1-0)

Course Objectives

• To learn basic concepts, functions and design principles of Jigs, Fixtures and Dies
• To know the importance of work piece location & clamping

Course Outcomes

After completion of course, the student should be:
• Able to Understand and Analyse customers need
• Able discuss and finalise product needs
• Conceive the tool design parameters
• Design against standard and parameters
• Test against specifications and standards
• Develop prototype / simulation
• Interpret of output and confirming to specifications
• Communicate with manufacturing line
• Take remedial action if required

COs Course Outcomes Mapping COs with POs

(High-3, Medium-2, Low-1)

CO1 Able to gain knowledge on clamping devices including jigs and fixtures PO1(3)
CO4 Design and development of Plate jigs, Swinging leaf jigs and fixtures. Design against standard and parameters PO3(3), PO5(2)

Syllabus

Module - I (Locating Elements) (3 hrs)

Introduction, Jigs (Production Devices), Locating Principle, Locating methods and devices

Practice 1: Fabrication of a V – Locator for locating a cylindrical work piece.

Module - II (Clamping Elements) (3 hrs)

Introduction, Pneumatics and hydraulic actuation clamping, Analysis of clamping force

Practice 2: Estimation of clamping force during clamping of a cylindrical work piece with a V- Locator.

Module - III (Design of Jigs) (6 hrs)

Introduction, drill bushes, elements of jig, construction, material for jig elements, different types of jigs

Practice 3: Designing of a Plate Jig.

Practice 4: Designing of a Swinging Leaf Jig.

Module - IV (Drill Jigs) (3 hrs)

Automatic drill jig, rack and pinion indexing device, Air operated drilling jig component, group jigs and fixtures, chip control, economic justification for jigs and fixtures

Practice 5: Study of Automated Jigs.

Module - V (Design of Fixtures) (8 hrs)

Introduction, Design principles of fixtures, types of fixture, general principles of boring fixtures, classification of boring fixture, lathe fixture, broaching fixture, Milling fixture, Grinding fixture

Practice 6: Designing a Lathe Fixture.

Practice 7: Designing a Milling Fixture.

Module - VI (Design of Dies for Sheet Metal Work) (4 hrs)

Introduction, Types of dies, clearance and tolerance of die opening and punch, force, power, energy in shearing, strip layouts, economical stock utilization

Practice 8: Designing a progressive die for making of washer

Module - VII (Design of Drawing and Forming Dies) (6 hrs)

Theory of drawing, blank development, strain factor, calculation of force, construction of drawing and drawing dies, Modern Metal forming techniques

Practice 9: Designing a Forging die for making a gear blank

Practice 10: Designing a drawing die for making a circular cross-sectional wire.

Textbooks

1. Joshi, P H, Jigs & Fixtures, 2010, 3rd Edition, McGraw Hill.

2. Nagpal, G R, Tool Engineering & Design, 2000, Khanna Publishers.

Reference Books

1. Venkataraman, K, Design of Jigs, Fixtures & Press Tools, 2015, Wiley & Sons

2. Mehta, N K, Metal Cutting and Design of Cutting Tools, Jigs & Fixtures, 2015, McGraw

SESSION PLAN

Session - 1 (1 hr)

Introduction, Jigs (Production Devices), Locating Principle, Locating methods and devices

Session - 2 (2 hrs)

Practice - 1 - Fabrication of a V – Locator for locating a cylindrical work piece.

Session - 3 (1 hr)

Introduction, Pneumatics and hydraulic actuation clamping, Analysis of clamping force

Session - 4 (2 hrs)

Practice - 2 - Estimation of clamping force during clamping of a cylindrical work piece with a V- Locator.

Session - 5 (2 hrs)

Introduction, drill bushes, elements of jig, construction, material for jig elements, different types of jigs

Session - 6 (2 hrs)

Practice - 3 - Designing of a Plate Jig.

Session - 7 (2 hrs)

Practice - 4 - Designing of a Swinging Leaf Jig.

Session - 8 (2 hrs)

Automatic drill jig, rack and pinion indexing device, Air operated drilling jig component, group jigs and fixtures, chip control, economic justification for jigs and fixtures

Session - 9 (1 hr)

Practice - 5 - Study of Automated Jigs.

Session - 10 (2 hrs)

Introduction, Design principles of fixtures, types of fixture, general principles of boring fixtures, classification of boring fixture, lathe fixture, broaching fixture, Milling fixture, Grinding fixture

Session - 11 (3 hrs)

Practice - 6 - Designing a Lathe Fixture.

Session - 12 (3 hrs)

Practice - 7 - Designing a Milling Fixture.

Session - 13 (2 hrs)

Introduction, Types of dies, clearance and tolerance of die opening and punch, force, power, energy in shearing, strip layouts, economical stock utilization

Session - 14 (2 hrs)

Practice - 8 - Designing a progressive die for making a washer.

Session - 15 (2 hrs)

Theory of drawing, blank development, strain factor, calculation of force, construction of drawing and drawing dies, Modern Metal forming techniques

Session - 16 (2 hrs)

Practice - 9 - Designing a Forging die for making a gear blank.

Session - 17 (2 hrs)

Practice - 10 - Designing a drawing die for making a circular cross-sectional wire.

Our Main Teachers

Santosh Patro

Assistant Professor
VIEW PROFILE

I completed my B.Tech in Mechanical Engineering from Jagannath Institute of Technology and Management, Paralakhemundi, Odisha in 2010. I did my M.Tech in Mechanical Engineering (Specialization – Production Engineering) from Veer Surendra Sai University of Technology (VSSUT), Burla, Odisha in 2014. Currently, i am persuing my PhD in Centurion University of Technology and Management, Odisha, […]