User:PrabhakarPurushothaman/Jigs and Fixturs (Mechanical)

Jigs and Fixtures (Mechanical)

Introduction

Jigs and Fixtures are used in machine tools in order to increase productivity by reducing cycle time. The jigs and fixtures will be designed with features such as easy location with self alignment and clamping arrangement therefore reduces job setup time. The Poke Yoke (Mistake proof) concept will be incorporated therefore improper loading of component will be totally eliminated therefore reduces wastage or scrap.

Jigs

Jigs are used in metal cutting operation such as drilling, reaming, tapping etc. The operation will be carried out by guiding the cutting tool therefore the part will be accurately machined. The word jig can be defined as " Job Integrated with Guide"

Fixtures

Fixtures are work holding devices used to locate and hold the work piece rigidly for various operations like machining, Inspection, etc. In Fixtures cutting tools will not be guided. The word Fixture refers to fixing a structure

Types of Jigs

• Leaf or Latch jig
• Box jig
• Sandwich Jig
• Trunnion or Turn over jig etc.

Types of Fixtures

• Milling Fixtures
• Grinding Fixtures
• Inspection Fixtures
• Assembly Fixtures etc.

Advantages of using Jigs and Fixtures

• Improves the product quality and provides interchangeability
• Increases Productivity by reducing job setup time
• Low skilled employee can be employed
• Reduces Scrap or wastage
• Reduces inspection and quality control cost
• Reduces manufacturing cost
• Reduces operators effort

References

Jigs and Fixtures By P H Joshi Tata McGraw-Hill Education Publication

External links

• www.example.com