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63875-Ch16 - Transfer Lines-3e-S 7-10/06 Chapter 16...

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Transfer Lines-3e-S 7-10/06, 06/04/07 Chapter 16 AUTOMATED PRODUCTION LINES REVIEW QUESTIONS 16.1 Name three of the four conditions under which automated production lines are appropriate. Answer : The four conditions listed in the text are (1) high product demand, (2) stable product design, (3) long product life, and (4) multiple operations are required to produce the product. 16.2 What is an automated production line? Answer : As defined in the text, an automated production line consists of multiple workstations that are automated and linked together by a work handling system that transfers parts from one station to the next. 16.3 What is a pallet fixture, as the term is used in the context of an automated production line? Answer : As defined in the text, a pallet fixture is a workholding device that is designed to (1) fixture the part in a precise location relative to its base and (2) be moved, located, and accurately clamped in position at successive workstations by the transfer system. 16.4 What is a dial-indexing machine? Answer : A dial-indexing machine is an automated system consisting of multiple workstations that process workparts attached to fixtures around the periphery of a circular worktable, and the table is indexed (rotated in fixed angular amounts) to position the parts at the stations. 16.5 Why are continuous work transport systems uncommon on automated production lines? Answer : Continuous work transport systems are uncommon on automated lines due to the difficulty in providing accurate registration between the station workheads and the continuously moving parts. 16.6 Is a Geneva mechanism used to provide linear motion or rotary motion? Answer : A Geneva mechanism provides rotary motion. 16.7 What is a storage buffer as the term is used for an automated production line? Answer : As defined in the text, a storage buffer is a location in a production line where parts can be collected and temporarily stored before proceeding to subsequent (downstream) workstations. 16.8 Name three reasons for including a storage buffer in an automated production line? Answer : The text lists the following five reasons: (1) to reduce the effect of station breakdowns, (2) to provide a bank of parts to supply the line, (3) to provide a place to put the output of the line, (4) to allow for curing time or other required delay associated with processing, and (5) to smooth cycle time variations. 16.9 What are the three basic control functions that must be accomplished to operate an automated production line? Answer : The three basic control functions are (1) sequence control to coordinate the sequence of actions of the transfer system and associated workstations, (2) safety monitoring to ensure that the production line does not operate in an unsafe condition, and (3) quality control to monitor certain quality attributes of the workparts produced on the line.
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