PCB Assembly Cost Modifiers In The Technology Cost Model - KingshengPCBA

About Us | Events | Company Structure | Management Staff Structure | Market Focus | Company Certification | Our Services

The manufacturing plan for printed circuit boards - PCBA can change frequently. Some of the changes could be the batch run sizes, the work holder sizes, or the quality of the assembly process steps PCB assembly. This can have a significant effect on the calculations shown in Table 6.6. A more accurate methodology is required to make the cost calculation more reflective of the changes in the manufacturing cycle (printed circuit board assembly). Hence, the use of cost modifiers can make the cost model more flexible and responsive to changes in the manufacturing plans (PCBA).

The modifiers represent the impact of changing manufacturing components and parts volume due to the new products being introduced (Kingsheng PCBA). This might require additional purchase or upgrade of equipment, new factory layout and material flow, as well as updated manufacturing methods. Since machine setup and product batching account for a significant portion of manufacturing resources, these effects should be taken into consideration when estimating the costs of new products. Some of the modifiers that should be included are:

Batch run setup modifier. This modifier represents the setup requirements for each product part number. They include computer- integrated manufacturing (CIM) information transfer, the setup of the machine parameters, and first piece inspection for each batch. In PCB assembly, the setup times could be quite lengthy. For example, a third of the production time allocated for automatic insertion could be spent on properly preparing the components for sequencing prior to insertion. Many different techniques have been used to reduce this setup time, including permanent component allocation to loading heads as well as off-line loading of heads. These modifiers are in effect only at those operations where batch specific tasks are to be performed Kingsheng PCBA.