Question: Problem 5(a) A 23-station transfer line has been logged for 5 days (a total of 2400 min). During this time, there were a total of

Problem 5(a)

A 23-station transfer line has been logged for 5 days (a total of 2400 min). During this time, there were a total of 158 down-time occurrences on the line. The accompanying table identifies the type of downtime occurrence, how many occurrences, and how much total time for the type of occurrence.

[Type of occurrences] Number of occurrences. Total minutes lost

Tool-related causes at stations [104] [520] Mechanical failures at stations [ 21] [189] Other miscellaneous stations failures [ 7 ] [26] Associated with the transfer mechanism [26] [78]

The transfer line performs a sequence of machining operations, the longest of which takes 0.42 min. The transfer mechanism takes 0.08 min to index apart from one station to the next position. Assuming no parts removal when the line jams, determine the following characteristics for this line for the 5-day period:

a) How many parts are produced?
b) Downtime proportion.
c) Production rate and production time.
d) Frequency rate p associated with the transfer mechanism breakdowns.

COURSE: Intelligent Production System

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