Manufacturing Engineering & Technology

34 slides
4.26 MB
761 views

Similar Presentations

Presentation Transcript

1

Manufacturing Engineering & Technology Introduction

2

ManufacturingComes from Latin manu factus “made by hand” Manufacturing is concerned with making products. Dates back to 5000-4000 BC

3

TABLE 1.1 Approximate Number of Parts in Products

4

TABLE 1.2 Historical Development of Materials, Tools, and Manufacturing Processes

5

TABLE 1.2 (continued) Historical Development of Materials, Tools, and Manufacturing Processes

6

TABLE 1.2 (continued) Historical Development of Materials, Tools, and Manufacturing Processes

7

TABLE 1.2 (continued) Historical Development of Materials, Tools, and Manufacturing Processes

8

TABLE 1.2 (continued) Historical Development of Materials, Tools, and Manufacturing Processes

9

Industrial Revolutions(First)Industrial revolution: England 1750s. Prior to this good produced in batches and required much manual labor in all phases of production (Second) Industrial revolution: mid-1900’s Solid-state electronic devices and computers Interchangeable parts- early 1800’s- American manufacturer Eli Whitney

10

FIGURE 1.2a Components of a common incandescent light bulb. Source: Courtesy of General Electric Company.

11

FIGURE 1.2b Manufacturing steps in making an incandescent light bulb. Source: Courtesy of General Electric Company.

12

Product DesignProduct Design involves the creative and systematic prescription of the shape and characteristics of an artifact to achieve specified objectives while simultaneously satisfying several constraints (p.8) Concurrent Engineering (simultaneous engineering): from the earliest stages of product design and engineering, all relevant disciplines are simultaneously involved.

13

FIGURE 1.3 (a) Chart showing various steps involved in traditional design and manufacture of a product. Depending on the complexity of the product and the type of materials used, the time span between the original concept and the marketing of the product may range from a few months to several years. (b) Chart showing general product flow in concurrent engineering, from market analysis to marketing the product. Source: After S. Pugh.

14

Life CycleLife cycle of a product Product start-up Rapid growth of the product in the marketplace Product maturity Decline

15

Life Cycle EngineeringLife cycle engineering requires that the entire life of a product be considered, beginning with the design stage and on through production, distribution, product use, and finally recycling or the disposal of the product.

16

Computers CAD CAM Prototype: a physical model of an individual component or product (Rapid prototyping)

17

More about DesignDesign for manufacture is a comprehensive approach to integrating the design process with production methods, materials, process planning, assembly, testing and quality assurance. Design for service: products often have to be disassembled to varying degrees in order to service and repair.

18

Green DesignGreen design and manufacturing considers all possible adverse environmental impacts of materials, processes, operations, and products, so that they can all be taken into account at the earliest stages of design and production.

19

Selection of MaterialsFerrous metals: carbon, alloy, stainless, steel Nonferrous metals: aluminum, magnesium, copper, nickel, titanium… Plastics (polymers): Thermoplastics, thermosets, elastomers Composite materials: reinforced plastics and metal-matrix and ceramic-matrix composites Nanomaterial Shape-memory alloys

20

TABLE 1.3 General Manufacturing Characteristics of Various Materials

21

FIGURE 1.5 Cross sections of baseball bats made of aluminum (top two) and composite material (bottom two).

22

FIGURE 1.6a Schematic illustrations of various casting processes.

23

FIGURE 1.6b Schematic illustrations of various bulk-deformation processes.

24

FIGURE 1.6c Schematic illustrations of various sheet-metal-forming processes.

25

FIGURE 1.6d Schematic illustrations of various polymer-processing methods.

26

FIGURE 1.6e Schematic illustrations of various machining and finishing processes.

Browse More Presentations

Last Updated: 8th March 2018

Recommended PPTs