Assignment 2 Shaquaris Magee
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University of Notre Dame *
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C1C017071
Subject
Industrial Engineering
Date
Dec 6, 2023
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docx
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2
Uploaded by PresidentNarwhalMaster251
IET 406: Industrial
Automation
Assignment 2
(13
points)
1.
What is the difference between a processing operation and an assembly operation?
(1.4 points)
Answer: A processing operation transforms a work material from one state of completion
to a more advanced state that is closer to the final desired part or product. It adds value
by changing the geometry, properties, or appearance of the starting material. An
assembly operation joins two or more components to create a new entity, called an
assembly, subassembly, or some other term that refers to the joining process.
2.
Name the four categories of part-shaping operations, based on the state of the starting
work material. (1.4 point)
Answer: The four categories are (1) solidification processes, (2) particulate processing, (3)
deformation processes, and (4) material removal processes.
3.
What is the difference between hard product variety and soft product variety? (1.4 points)
Answer: Hard product variety is when the products differ substantially. In an assembled
product, hard variety is characterized by a low proportion of common parts among the
products; in many cases, there are no common parts. Soft product variety is when there are
only small differences between products. There are a high proportion of common parts
among assembled products whose variety is soft
4.
What is lean production? (1.4 points)
Answer: The definition given in the text is the following: Lean production means operating
the factory with the minimum possible resources and yet maximizing the amount of work
that is accomplished with these resources. Lean production also implies completing the
products in the minimum possible time and achieving a very high level of quality, so that
the customer is completely satisfied. In short, lean production means doing more with less,
and doing it better.
5.
What are the characteristics of agile production? (1.4 points)
Answer: Agile production success comes with the following: Specialization,
Customization, Flexibility, Low cost, High quality, Low inventory, Short lead time
6.
The XYZ Company is planning to introduce a new product line and will build a new factory
to produce the parts and assembly the final products for the product line. The new product
line will include 100 different models. Annual production of each model is expected to be
1000 units. Each product will be assembled of 600 components. All processing of parts and
assembly of products will be accomplished in one factory. There is an average of 10
processing steps required to produce each component, and each processing step takes 30 sec.
(includes an allowance for setup time and part handling). Each final unit of product takes 3.0
hours to assemble. All processing operations are performed at work cells that each includes a
production machine and a human worker. Products are assembled on single workstations
consisting of two workers each. If each work cell and each workstation require 200 ft
2
, and
the factory operates one shift (2000 hr/yr), determine:
(a)
how many production operations, (2 points)
answer:
(a) Q(f) = PQ= 100(1000) = 100,000products/yr
Number of final assembly operations =100,000 asby ops/yr
Number of processing operations n(of) = PQn(p) n(o) = 100(1000)(600)(10) = 600,000,000
proc ops/yr
(b)
how many workers will be required in the plant. (2 points) and
Answer: ) Total processing operation time = (600 x 10^6 ops)(0.5 min./(60 min./hr)) =
5,000,000 hr/yr.
Total assembly operation time = (100 x 10^3 asby ops)(3 hr/product) = 300,000 hr/yr
Total processing and assembly time = 5,300,000 hr/yr
(c) how much floor space, (2 points)
Answer: With 1 worker per workstation for processing operations, n= w= 2500 = 2500
workstations.
With 2 workers per stations for assembly, n = w/2 = 150/2 = 75 workstations.
Total floor space A = (2575 stations)(200 ft^2/station) = 515,000 ft^2.
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