Monday, May 7, 2007

ENGINEERING THE MANUFACTURING/ASSEMBLY LINE

Assembly line must be engineering base on design capacity to ensure that the actual operation not under or over forecast. Normal practise recommended to setting the design capacity 30% more than volume required. The 30 % reservation is to fullfill the sales requirement increase more than forecast.

Design capacity should be calculate from basic/estimate process time and manhours for total manufacturing or assembly process. The working hours per year must be determine early to support the calculation of production per day and production per month.

After production capacity was setting, reverse engineering need to apply in order to draw up the basic layout for assembly line. Basic assembly line layout should considered the :
1. Total assembly process flow.
2. Raw material breakdown level.
3. Cycle time for one unit production.
4. Equipment and tool related.
5. Jigs and fixtures related.
6. Processing material required.
7. Product profile data.
8. Logistic flow.

The operation space or dimension on basic layout must be inclusive the working area, passage way, raw material racking, tool position, machine allocation, utilities required such as air point for air tool, power point for machine, and others item related to operation process flow .

From basic layout, detail technical drawing need to prepared. The technical drawings should be in individual title/item such as air piping drawing, power point drawing, process flow drawing and others. All individual technical drawing must include the small detail items to ensure that actual assembly line construction will meet the requirement setting.

Basic layout and technical drawing must review and revise(if any) to get a excelent result of assembly line design.

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