Two jobs must be processed through four machines in the same order. Theprocessing times in the required sequence areJob 1 Job 2Machine Time Machine TimeA 5 A2B 4 B4C 6 C3D 3 D5Determine how the two jobs should be scheduled in order to minimize the totalmakespan, and draw the Gantt chart indicating the optimal schedule

Two jobs must be processed through four machines in the same order. Theprocessing times in the required sequence areJob 1 Job 2Machine Time Machine TimeA 5 A2B 4 B4C 6 C3D 3 D5Determine how the two jobs should be scheduled in order to minimize the totalmakespan, and draw the Gantt chart indicating the optimal schedule

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter2: Measurement, Materials, And Safety

Section2.5: Quality Assurance, Process Planning, And Quality Control

Problem 10RQ: If an X-bar chart graph falls below the LCL or rises above the UCL, a machining process is said to...

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The following four jobs must be processed through a three-machine flow shop.MachineJob A B C1 4 262 2 373 6 564 3 48Find the optimal sequencing of the jobs in order to minimize the makespan.What is the makespan at the optimal solution? Draw a Gantt chart illustrating yoursolution.
The analyst in the Dorben Company wishes to assign a number of like facilities to an operator based on minimizing the cost per unit of output. A detailed study of the facilities revealed the following: Loading machine standard time = 0.30 minutes Unloading machine standard time = 0.25 minutes Walk time between two machines = 0.09 minutes Operator rate = $12.00 per hour Machine rate (both idle and working) = $18.00 per hour Machine cycle time = 1.55 minutes TEC = The Expected Cost a) With your initial estimation, how many machines can be serviced exactly?(please keep a non-integer with three decimal places) b) How much is your TEC per piece if the operator has idle time? (please keep three decimal places) c)How much is your TEC per piece if the machine has idle time? (please keep three decimal places) d) How many of these machines should be assigned to each operator?(please write down a numerical number)
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Suppose that four machines, 1, 2, 3, and 4 have been identified as belonging in a Group Technology (GT) machine cell. 50 parts enter the machine grouping at machine 3, 20 parts leave afterprocessing at machine 1, and 30 parts leave after machine 4. Determine a logical machine arrangement through cluster analysis. Note: Use Cluster analysis only to solve this.
It is currently day 10 in the production calendar of the Machine Shop. Three orders(A, B, and C) are to be processed at a particular machine tool. The orders arrived in thesequence A-B-C. The table below indicates the process time remaining and productioncalendar due date for each order. Determine the sequence of the orders that would bescheduled using the following priority control rules: (a) first-come-first-serve, (b) earliest due date, (c) shortest processing time, (d) least slack time, and (e) critical ratio
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For Each of the following activities, determine the maximum delay in the starting time relative to its earliest start time that will allow all the immediately succeeding activities to be scheduled anywhere between their earliest and latest completion times.a. TF = 10, FF = 10, D = 4b. TF = 10, FF = 5, D = 4c. TF = 10, FF = 0, D = 4
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A batch of 35 parts is ordered by a customer about every six months. The parts are currently processed sequentially through five conventional machines, listed in the following table with setup times and work cycle times per piece. These machines all require an operator to be in attendance during the work cycle. There is a delay of 10 hr/machine dueto transport between machines and waiting in queues of other parts processed by thesemachines. A recommendation has been made to process the parts on a new multitaskingmachine that would complete the batch in one setup, which would involve a simple fixtureand a setup time of 2.0 hr. The work cycle on the multitasking machine consists of thesame operations that are accomplished by the five machines, but the cycle time would beless than the sum of the five cycle times by one-half because of tool path improvementsand reduced part handling. Determine the manufacturing lead time (how long it takes tocomplete the batch of 35 parts, including…
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The BOM for product A is shown in Figure 11.40, and datafrom the inventory records are shown in Table 11.9. In theMPS for product A, the MPS start row has 100 units in week 3and 200 in week 6. Develop the material requirements planfor the next 6 weeks for items C, D, and E.a. Develop the material requirements plan for the next6 weeks for items C, D, and E.b. What specific managerial actions are required inweek 1?