Advanced Fixture Design for FMS (Advanced Manufacturing) by A.Y.C. Nee, K. Whybrew, A. Senthil kumar

By A.Y.C. Nee, K. Whybrew, A. Senthil kumar

Furniture are the most important to new production ideas and principally dictate the extent of flexibleness a producing approach can in achieving. Advanced Fixture layout for FMS presents a scientific foundation for the choice and layout of fixturing structures. It offers a evaluation of the present cutting-edge of versatile and reconfigurable fixturing platforms. contemporary advancements in layout method utilizing CAD are analysed intensive. Fixture layout is visible as an inseparable a part of strategy making plans. the first goal of a fixture procedure is to make sure that the half being synthetic might be made regularly in the tolerance laid out in the layout. a brand new approach to tolerance research is used to examine the suitability of place surfaces and the series of operations and is defined intimately.

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19. It is possible to combine all 38 Advanced Fixture Design for FMS three forces into a single force. To satisfy axiom 16 the line of action of the single force must not produce moments about any possible centre of rotation that tend to move the workpiece away from locators. 20. The component of the line of action of this force projected onto the base plane must also pass through the line joining possible centres of rotation. 21. 21, two conditions are possible. 20 Clamping using a single resultant holding force Fixture Design Fundamentals 39 The first condition is that friction between the locators is sufficient to prevent the workpiece from sliding on the locators.

11 Location to two holes Cylindrical shapes cannot be located using the 3-2-1 system. 13 show correct geometric location for long and short cylinders. Considering each degree of freedom in turn will result in the five locators shown in each figure. Because the cylindrical surface is symmetrical about its axis there is no feature of the surface to locate. ,. rJXture Design Fundamentals 33 x ~ ~x 51_Z---+-\ L-2S~1-~~2-""'K2S"""'3 ... Figure 213 Location of a -short cylinder by 5 locators Only five locators are required to locate a cylinder.

Phase five is the fmal analysis of the tentative designs and selection of the fmal fIXture design on the basis of overall cost, workpiece quality and production quantity. An extensive collection of checklists questions the designer on the design inputs. These questions are ordered in such a way that a chronological order is - I::) I::) "a ~ § '- ~ tl:i ;:: ~ "' V:! ::::- -. ~ ~~ ~ =:!. :::·9 ~ ~. 0:;' ~ ~~ ~ ~. ~~ ;e :::-. ~ t; ~'< - ... ~~ i;!. I::) ~;e ~~ • Cl ..... :::. 'j ~. -- . J , e ~ ~ 0 6 8~ c:: ~ ~ 0 rae 0 ~ ~ a e; 46 Advanced Fixture Design for FMS imposed on the designer.

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