Operations Management
2nd Edition
ISBN: 9781260484687
Author: CACHON, Gerard
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Question
Chapter 7, Problem 11PA
a)
Summary Introduction
To determine: The capacity of the machine (Housings per hour).
b)
Summary Introduction
To determine: The utilization of the machine.
c)
Summary Introduction
To determine: The average inventory of housings.
d)
Summary Introduction
To determine: The number of D7000 housing to be produced in each batch.
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Hammond Inc. has analyzed the setup time on its computer-controlled lathe. The setup requires changing the type of fixture that holds a part. The average setup time has been 135 minutes, consisting of the following steps:
Step
Time (in minutes)
Turn off machine and remove fixture from lathe
13
Go to tool room with fixture
15
Record replacement of fixture to tool room
18
Return to lathe
20
Clean lathe
17
Return to tool room
20
Record withdrawal of new fixture from tool room
12
Return to lathe
15
Install new fixture and turn on machine
8
Total setup time
138
Why should management be concerned about improving setup time?
What do you recommend to Hammond Inc. for improving setup time?
How much time would be required for a setup, using your suggestion in (b)?
Quasi-Tech Corporation produces specially machined parts. The parts are produced in batches in one continuous manufacturing process. Each part is custom produced and requires special engineering design activity (based on customer specifications). Once the design is completed, the equipment can be set up for batch production. Once the batch is completed, a sample is taken and inspected to see if the parts are within the tolerances allowed. Thus, the manufacturing process has four activities: engineering, setups, machining, and inspecting. Costs have been assigned to each activity using direct tracing and resource drivers as follows:
Activity
Expected Cost
Activity Driver
Activity Capacity
Engineering
$1,000,000
Engineering hours
5,000 hours
Setups
900,000
Setups
200 setups
Machining
2,000,000
Machine hours
25,000 machine hours
Inspection
800,000
Inspection hours
2,500 inspection hours
Quasi-Tech produces two models: Model C and Model D. The following table…
Consider the two stage process depicted below:
Stage 1
Stage 2
The first stage of the process requires 6 minutes of work for a single employee to
complete. There are 8 employees working at this process stage - each for a total of 5
hours per day. This stage includes an inspection where 14% of WIP is rejected and
exits the system after completing Stage 1.
The remaining WIP continues to Stage 2 of the process. At this stage, 7 employees
work - each for a total of 4 hours per day. WIP is processed at Stage 2 in 10 minutes
by a single employee.
What is the daily process capacity? Round your answer to the nearest first decimal
place.
Your Answer:
Answer
Chapter 7 Solutions
Operations Management
Ch. 7 - Prob. 1CQCh. 7 - Prob. 2CQCh. 7 - Prob. 3CQCh. 7 - Prob. 4CQCh. 7 - Prob. 5CQCh. 7 - Prob. 6CQCh. 7 - Prob. 7CQCh. 7 - Prob. 8CQCh. 7 - Prob. 9CQCh. 7 - Prob. 10CQ
Ch. 7 - Prob. 11CQCh. 7 - Prob. 12CQCh. 7 - Prob. 13CQCh. 7 - Prob. 14CQCh. 7 - Prob. 1PACh. 7 - Prob. 2PACh. 7 - Prob. 3PACh. 7 - Prob. 4PACh. 7 - Prob. 5PACh. 7 - Sarahs Organic Soap Company makes four kinds of...Ch. 7 - Prob. 7PACh. 7 - Prob. 8PACh. 7 - Bruno Fruscalzo decided to set up a small...Ch. 7 - Prob. 10PACh. 7 - Prob. 11PACh. 7 - Prob. 1CCh. 7 - Prob. 2CCh. 7 - Prob. 3CCh. 7 - Prob. 4C
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