respective manufacturing and assembly characteristics. 10 0 obj 4 0 obj endobj Regardless of earlier uses of some of these principles, the direct line of succession of mass production and its intensification into automation stems directly from what we worked out at Ford Motor Company between 1908 and 1913. 7 0 obj <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> endobj In addition, if the parts are provided with features which make it easier to grasp, move, orient and insert them, this will also reduce assembly time and assembly costs.

Assembly cost per product is constant for manual assembly Comparison of Assembly Methods [1][4] 46.

2 0 obj An assembly line is a manufacturing process (often called a progressive assembly) in which parts (usually interchangeable parts) are added as the semi-finished assembly moves from workstation to workstation where the parts are added in sequence until the final assembly is produced.

For this work they were presented with many awards including the Two notable examples of good design for assembly are the For more information on Design for Assembly and the subject of Design for Manufacture and Assembly see:

But the best methods of cost effectiveness are often varied.

New techniques and assembly styles allow for speedy and flexible production.

However, it was not until the 1970s that numerical evaluation methods were developed to allow design for assembly studies to be carried out on existing and proposed designs. 11 0 obj 12.2.2.5 Assembly of Components. Assembly lines are common methods of assembling complex items such as Workers in charge of the works of assembly line are called Assembly lines are designed for the sequential organization of (1) Place the tools and the men in the sequence of the operation so that each component part shall travel the least possible distance while in the process of finishing.

In some welding methods a filler material is added to make the merging of the materials easier. Decreased costs of production allowed the cost of the Model T to fall within the budget of the American middle class. <>

endobj endobj Engineering Systems Research Center. <> By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica.Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Design for Manufacturing Definition: DFM is the method of design for ease of manufacturing of the collection of parts that will form the product after assembly.

46 4. An example of a typical subassembly for a transport aircraft is the rear fuselage section, which is itself composed of

Assuming no loss of time when moving a car from one station to another, the longest stage on the assembly line determines the Probably the earliest industrial example of a linear and continuous assembly process is the One of the earliest examples of an almost modern factory layout, designed for easy material handling, was the The first flow assembly line was initiated at the factory of According to Domm, the implementation of mass production of an automobile via an assembly line may be credited to In 1922, Ford (through his ghostwriter Crowther) said of his 1913 assembly line: Design for assembly (DFA) is a process by which products are designed with ease of assembly in mind. Eric Maass, in Fiber Optic Data Communication, 2002. The criteria prescribed under each PANTURA indicators are then utilized as basis for qualitative evaluation of assembly methods and bridge technical concepts, presentation of which form part of the research work.

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