INTRODUCTION FOR DESIGN OF JIGS AND FIXTURES
This course covers jigs & fixtures used in manufacturing to introduce the learner to the theory of jigs and fixtures as well as exposing the learner to the application of jigs and fixtures.
Every part produced must be held while it is machined, joined, inspected or has any number of other operations performed on it.
The work piece must be accurately located and securely held throughout the complete operation. Yields, efficiencies and quality of the products are, to a great extent, influenced by the design and maintenance of the Jigs & Fixtures used in the process. A thorough understanding of how and why jigs and fixtures are designed through the various elements and considerations of designs is therefore necessary in order to achieve this.
This program is designed to equip these employees with the principles and functional requirements of Jigs & Fixtures. Principles of design are covered in detail and the participants will have to complete a design of a Jig or a Fixture as requirement for the successful completion of the course.
COURSE OBJECTIVES
- Provide simple, easy to operate tools for maximum efficiency.
- Reduce manufacturing expenses by producing parts at the lowest possible cost.
- Design tools that consistently produce parts of high quality.
- Increase the rate of production with existing machine tools.
- Design the tools to make it fool proof and prevent improper use.
- Select material that will give adequate tool life
- Provide protection in the design of the tools for maximum safety of operator.
COURSE CONTENT
1. Introduction To The Design Cycle
2. Elements Of A Tool Design
i. Objectives
ii. Tool Designer Responsibilities
iii. The Design Process
iv. Economics of Design
v. Economical Lot Sizes
vi. Break-even Charts
vii. Tool Drawings
viii. Tooling Layout
ix. Safety
x. Material Handling in the Workplace
xi. Review Questions
3.Feature Locating Systems
4.Efficient Clamping Mechanisms
i. Basic Workholders
ii. Workholder Purpose and Function
iii. General Considerations
iv. Locating Principles
v. Redundant Locators
vi. Foolproofing
vii. Chip and Burr Problems
viii. Clamping Principles
ix. Chucks
x. Vises
xi. Nonmechanical Clamping
xii. Power Clamping
xiii. Multiple-part Clamping
xiv. Basic Construction Principles
xv. Review Questions
5.Designs With Fail Safe & Poka Yoke Features
6.Quick Changeover Designs (SMED)
7.Assembly Friendly Design (DFMA)
8.Importance Of Ergonomic Design
9.Materials For Tooling Fabrication
i.Physical Properties
ii.Mechanical Properties
iii.Ferrous Tool Materials
iv.Nonferrous Tool Materials
v.Nonmetallic Tool Materials
vi.Heat-treating
vii.Review Questions
10.Case studies and group discussion
