A UD. Ergonomic Chairs engaged in the used wood craft industry in the form of making...

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General Management

A UD. Ergonomic Chairs engaged in the used wood craft industryin the form of making chairs, wanting to know the efficiency ofmaking these chairs. In the manufacturing process the operatorworks for 8 hours / day. While the amount of production is 30 seats/ day. The settlement operations are as follows:
Operation
Description
Preliminary Operation
Time (minutes)
1
Measure wood for the legs
-
2
2
Cut wood according to size
1
3
3
Smooth the cut wood
2
4
4
Measure wood for the holder
-
3
5
Cut according to the size of the holder
4
4
6
Smooth the cut off holder
5
4
7
Assemble the stand with the legs
3,6
5
8
Provide the backrest for the assembly
7
6
9
Painting
8
7
10
Drying
9
10
From the data above, determine the preliminary diagram, cycletime, work station, work station efficiency and trajectoryefficiency of making the chair using the Kilbridge-Wester Heuristicmethod and Ranked Positional Weight (RPW).

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4.1 Ratings (487 Votes)

Ans PreliminaryPrecedence Diagram By using Kilbridge and Westers Method KWM Based on the data given assuing the Cycle Time Tc 10 mins Work Station Operations Time for each operations Te in minutes Ts See Answer

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Operation	Description	Preliminary Operation	Time (minutes)
1	Measure wood for the legs	-	2
2	Cut wood according to size	1	3
3	Smooth the cut wood	2	4
4	Measure wood for the holder	-	3
5	Cut according to the size of the holder	4	4
6	Smooth the cut off holder	5	4
7	Assemble the stand with the legs	3,6	5
8	Provide the backrest for the assembly	7	6
9	Painting	8	7
10	Drying	9	10