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design for assembly

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003021
EISBN: 978-1-62708-200-6
... mechanical fastening plastics solvent bonding weld evaluation IN PLASTIC PRODUCT ENGINEERING, the design of a one-piece item for molding is the ideal situation because it precludes an assembly operation. However, mechanical limitations and other considerations often make it necessary to join...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003043
EISBN: 978-1-62708-200-6
... unrepairable components, the correct sequence for design is to first locate and size the joints, in fiber patterns optimized for that task, and then fill in the gaps in between. This sequence is a marked departure from normal practice for conventional ductile metal alloys and is necessitated by the relative...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003060
EISBN: 978-1-62708-200-6
... for evaluation of subsequent geometric configurations and environmental conditions. Fig. 7 Ceramic component probabilistic design methodology Figure 8 depicts the general arrangement of the scroll assembly for gas turbine engines. The basis for establishing design acceptability was three...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003088
EISBN: 978-1-62708-199-3
... challenge in engineering design. Performance specifications, risk and hazard analysis, design process, design for manufacture and assembly, design for quality, reliability in design, and redesign are considered for functional requirements. Life-cycle analysis considers raw-material extraction from the earth...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003223
EISBN: 978-1-62708-199-3
... to 5%. Obviously, the design of a vehicle can greatly enhance this dismantling process. Most economical are whole assemblies, such as hoods and deck lids, which use the same material for skins, hinges, and inner panels that can be removed in one piece. Design for recycling also should involve...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009018
EISBN: 978-1-62708-187-0
... designed, the undercuts shown in Fig. 12(a) were needed to provide clearance for other components in the assembly. An improved design without undercuts is illustrated in Fig. 12(b) ; however, metal is added and the weight of the casting is increased. Fig. 12 (a) Undercuts required cores as shown...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003972
EISBN: 978-1-62708-185-6
... product. Manufacturing processes are then carried out to provide the product with these specifications. That is, product design provides the specifications for quality performance of the product, and the role of manufacturing is to produce that quality. A necessary step toward successful product...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004022
EISBN: 978-1-62708-185-6
... pluses and minuses are still valid for present conditions is a more difficult question. The answer lies in the sound understanding of the processing costs and performance metrics, and in knowing the independent design variables that can be tuned. The following sections describe the three basic elements...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009020
EISBN: 978-1-62708-187-0
... a powerful influence on the castability of cost-effective castable designs that are economically produced, machined, and assembled into a final product. This six-faceted system (based on four casting properties and two structural properties) is capable of optimizing: Geometry for...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004035
EISBN: 978-1-62708-185-6
... Abstract The design of forging operations; consisting of dies, fixturing, and parts; requires a consistent and unambiguous method for representing critical dimensions and tolerances. This article presents a dimensioning process, based on tooling points and datum planes, with the potential to...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009014
EISBN: 978-1-62708-187-0
... summarizes several strategies for improving the traditional casting design process. It also proposes some possible approaches for implementing these strategies. The article presents a vision for the development of comprehensive casting design guidelines along with specific development objectives...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003176
EISBN: 978-1-62708-199-3
... castings may be designed for function rather than ease of assembly, like built-up structures. Fillet radii are usually generous, decreasing stress concentration factors. Converting a built-up assembly to a casting usually is accompanied by a decrease in part count, assembly time and inventory, and weight...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004040
EISBN: 978-1-62708-185-6
... as receptacles, for mating members in assembly, serving as locations for fasteners or bearing surfaces, and contributing to a reduction in weight. Functions, as they relate to specific forging designs, are described in examples presented in this article. During the forging of a cavity, metal in the...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004034
EISBN: 978-1-62708-185-6
... (a) a section at the exterior of a forging with the parting line in the central plane and (b) for a section of a forged rib on one side of the parting line Abstract This article schematically illustrates the basic types of drafts used in forging design, including outside draft, inside draft...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004039
EISBN: 978-1-62708-185-6
... limits suggested by forging producers and users covering minimum web thicknesses that are producible are helpful in estimating the producibility of a given web thickness in projected-forging design. The article briefly analyzes the web designs of several forgings, including designs for producing flat...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.9781627081948
EISBN: 978-1-62708-194-8
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004038
EISBN: 978-1-62708-185-6
... strength and rigidity. Dimensions given in inches Fig. 5 Close-tolerance forging for a pylon bulkhead fitting, with peripheral ribs designed as faying surfaces for fastening to the pylon assembly. Dimensions given in inches Fig. 6 Conventional forging for a cam actuator link fitting...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009015
EISBN: 978-1-62708-187-0
... terms of component design, metal casting is very flexible in terms of configuration design. Casting permits the formation of streamlined, intricate, integral parts of strength and rigidity that are not obtainable by other methods of fabrication. For example, the flexibility of metal casting...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003087
EISBN: 978-1-62708-199-3
... larger process of bringing new products to market. The name that has been coined for the complete process is the product realization process (PRP). As indicated in Fig. 2 , engineering design takes place approximately between marketing and manufacturing within the total PRP of a firm. Engineering design...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009022
EISBN: 978-1-62708-187-0
... the design, or ribs or webs may be added to provide feed paths. The function of ribs or of sections of walls that have been enlarged in providing flow and feed paths for the molten metal as it fills the mold and cools is shown schematically in Fig. 1 . In pouring a flat plate, Fig. 1(a) , the...