Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 39, Problem 38SDP
Evaluate a process from a lean-production perspective. For example, observe the following closely, and identify, eliminate (when possible), or optimize the steps that produce waste in (a) preparing breakfast for a group of eight, (b) washing clothes or cars, (c) using Internet browsing software, and (d) studying for an exam, writing a brief report, or writing a term paper.
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A flow-line mass production operation consists of six manual workstations. Work units are moved synchronously and automatically between stations, with a transfer time of 10 secs. The manual processing operations performed at the six stations take 45 sec, 50 sec, 40 sec, 42 sec, 30 sec, and 55 sec, respectively. Determine (a) cycle time for the line, (b) time to process one work until through the six workstations, (c) average production rate, and (d) time to produce 20,000 units.
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Homework (Ch 03)
1. Specialization and production possibilities
Suppose Spain produces only tablets and smartphones. The resources that are used in the production of these two goods are not specialized-that is,
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the same set of resources is equally useful in producing both smartphones and tablets.
The shape of Spain's production possibilities frontier (PPF) should reflect the fact that as Spain produces more smartphones and fewer tablets, the
opportunity cost of producing each additional smartphone
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The following graphs show two possible PPFS for Spain's economy: a straight-line PPF (PPF1) and a bowed-out PPF (PPF2).
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Based on the previous description, the trade-off Spain faces between producing smartphones and tablets is best represented by
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Balboa Industries’ Electronics Division is trying to reduce supply chain risk by making more responsible make/buy decisions through improved cost estimation. A high-use component (expected usage is 5000 units per year) can be purchased for $25 per unit with delivery promised within a week. Alternatively, Balboa can make the component inhouse and have it readily available at a cost of $5 per unit, if equipment costing $150,000 is purchased. Labor and other operating costs are estimated to be $35,000 per year over the study period of 5 years. Salvage is estimated at 10% offirst cost and i = 12% per year. Neglecting the element of availability (a) determine the breakeven quantity, and (b) recommend making or buying atthe expected usage level.
Chapter 39 Solutions
Manufacturing Engineering & Technology
Ch. 39 - What is a manufacturing cell? Why was it...Ch. 39 - Describe the basic principle of flexible...Ch. 39 - Why is a flexible manufacturing system capable...Ch. 39 - What are the benefits of just-in-time production?...Ch. 39 - Prob. 5RQCh. 39 - What is an expert system?Ch. 39 - What are the advantages of a communications...Ch. 39 - What is MTConnect?Ch. 39 - What is a WLAN? a PAN?Ch. 39 - Describe your understanding of holonic...
Ch. 39 - What is Kanban? Explain.Ch. 39 - What is lean manufacturing?Ch. 39 - What is a push system?Ch. 39 - In the lean manufacturing concept, what is the...Ch. 39 - Prob. 15RQCh. 39 - In what ways have computers had an impact...Ch. 39 - What advantages are there in viewing...Ch. 39 - One restaurant makes sandwiches as they are...Ch. 39 - Discuss the benefits of computer-integrated...Ch. 39 - (a) Why is just-in-time production required in...Ch. 39 - Prob. 21QLPCh. 39 - Give an example of a push system and of a pull...Ch. 39 - What is fuzzy logic? Give three examples where...Ch. 39 - What are the advantages to having level...Ch. 39 - Is there a minimum to the number of machines in...Ch. 39 - Are robots always a component of an FMC? Explain.Ch. 39 - Are there any disadvantages to zero...Ch. 39 - Review Table 36.1 and identify the points that...Ch. 39 - Give examples in manufacturing processes and...Ch. 39 - What types of (a) products and (b) production...Ch. 39 - Describe your opinions concerning the...Ch. 39 - Can a factory ever be completely untended?...Ch. 39 - Assume that you own a manufacturing company andyou...Ch. 39 - How would you describe the benefits of FMS to an...Ch. 39 - Artificial neural networks are particularly useful...Ch. 39 - Prob. 37SDPCh. 39 - Evaluate a process from a lean-production...Ch. 39 - Pull can be achieved by working with one supplier...Ch. 39 - Prob. 40SDP
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- Explain the following technologies underpinning Industry 4.0; Industrial Internet and the Internet of Things (IoT), Artificial Intelligence, Big Data and Cloud computing and how these could support the main principles of a smart factory? What can manufacturing enterprises gain by applying these technologies, and what are the challenges. Give examples of applications using these technologies.arrow_forwardA factory production department consists of a large number of work cells. Each cell consists of one human worker performing electronics assembly tasks. The cells are organized into sections within the department, and one foreman supervises each section. It is desired to know how many work cells should be assigned to each foreman. The foreman’s job consists of two tasks: (1) provide each cell with a sufficient supply of parts that it can work for 4 h before it needs to be resupplied and (2) prepare production reports for each work cell. Task (1) takes 18 min on average per work cell and must be done twice per day. The foreman must schedule the resupply of parts to every cell so that no idle time occurs in any cell. Task (2) takes 9 min per work cell and must be done once per day. Neither the workers nor the foreman are allowed to work more than 8 h/day. Each day, the cells continue production from where they stopped the day before. (a) What is the maximum number of work cells that…arrow_forwardQ1. How do you classify manufacturing processes? List the factors affecting the selecting of manufacturing process.arrow_forward
- In rice production, list the different operations and identify the machines (if any) used to accomplish each operation.arrow_forwardMr. Tony Stark is the owner of a soy sauce (kicap) factory located in Padang Besar, Perlis. His annual kicap production is 48,000 bottles at the moment. His production process data are as follows: Item Data 1) Production days 280 days per year 2) Equipment working capacity 50 % 3) Staffs working capacity 50 % |4) Number of production batches per year 48 batches Mr. Tony Stark intended to increase his kicap production by double the volume within this year. Based on all of the data given, suggest how he can achieve this targeted production without spending any extra money on the production cost?arrow_forwardBluegill Furniture is a small furniture shop that focuses on making kitchen chairs. The weekly dollar value of its output, including finished goods and work in progress, is $14,280. The value of inputs, such as labor, materials, and capital, is approximately $16,528. Compute the total productivity measure for Bluegill Furniture.arrow_forward
- What is the Importance of Resource Management? And its role in the success of a project.arrow_forwardThree forklift trucks are used to deliver pallet loads of parts between work cells in a factory. Average travel distance loaded is 350 ft and the travel distance empty is estimated to be the same. The trucks are driven at an average speed of 3 miles/hr when loaded and 4 miles/hr when empty. Terminal time per delivery averages 1.0 min (load = 0.5 min and unload = 0.5 min ). If the traffic factor is assumed to be 0.90, availability = 100%, and worker efficiency = 0.95, what is the maximum hourly delivery rate of the three trucks?arrow_forwardA firm is attempting to minimize its shipping costs. The firm has 3 factories and must supply the needs of its 3 customers without shortages. Since the firm has no storage facilities, each factory must make daily shipments to its customers. The table below shows the capacity of each factory, the amount required by each customer, and the cost of shipping from each factory to each customer. Complete the table below to show the quantity shipped from each factory to each customer. (Leave no cells blank - be certain to enter "0" wherever required.) Shipping Costs ($/unit) Factory/Capacity Customer 1 Customer 2 Customer 3 A/100 units 11 5 9 B/180 units 8 7 8 C/130 units 12 7 10 Requirement— 205 units Requirement— 68 units Requirement— 137 units What is the total cost of meeting customer requirements each day?arrow_forward
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