Toshiba Notebook

742 Words Dec 30th, 2010 3 Pages
1. Case Summary
Toshihiro Nakamura, manufacturing engineering section head, examined the prototype assembly process heet for the newest subnotebook computer model. When every new model was designed, considerable attention was directed toward; * reducing the numbers of components, * simplifying parts production and * assembly requirements.
This new computer’s production was scheduled to begin in 10 days. Initial production for new model was to be at 150 units/day, increasing to 250 units/ day the following week. Eventually production should reach 300 units/ day.

Assembly Line
Model type: varies
Lot size : 10 – 100units
Assembly line : 14.4 meter conveyor
Total station: 10
Workers: 8 – 12 assembly workers + 1
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of workstation(N) x Workstation cycle time(C ) Line efficiency at 150 output = 21min = 0.7 (70%) 10 station x 3min/unit Line efficiency at 215 output = 21min = 1.00 (100%) 10 station x 2.09min/unit Line efficiency at 250 output = 21min = 1.17 (117%) 10 station x 1.80min/unit Line efficiency at 300 output = 21min = 1.4 (140%) 10 station x 1.50min/unit

Question 3: How should the line be redesigned to operate at the target 300units/day, assuming that no overtime will be used? What is the efficiency of your new design?

Current operator Layout;

Since the current assembly line layout should achieving 100% line efficiency when running at maximum capacity of 215 units. Thus, to operate at target 300 units/day, the current assembly line needs to redesign.

Proposed new operator Layout;

New sum of Task time (Tnew) = 21 min (new designed assembly line) New no. of workstation (Nnew) = 7 stations Current workstation cycle time (C215) = Production

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