A single-station assembly machine is to be considered as an alternative to the dial-indexing machine in Problem
Question:
(a) Production rate,
(b) Yield of good product (final assemblies containing no defective components), and
(c) Proportion uptime of the system. Handling time to load the base part and unload the finished assembly is 7 sec and the downtime averages 1.5 min every time a component jams. Why is the proportion uptime so much higher than in the case of the dial-indexing machine in Problem 17.4?
Problem 17.4
A dial indexing machine has six stations that perform assembly operations on a base part. The operations, element times, q and m values for components added are given in the table below (NA means q and m are not applicable to the operation). The indexing time for the dial table is 2 sec. When a jam occurs, it requires 1.5 min to release the jam and put the machine back in operation.
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Related Book For
Automation Production Systems and Computer Integrated Manufacturing
ISBN: 978-0132393218
3rd edition
Authors: Mikell P.Groover
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