Electrical Equipment Industry
Dust Adhesion During Assembly/Inspection of HDD Motors
Dust and other particles adhere to workpieces in the bearing press-fitting, magnet mounting, run-out inspection, and appearance inspection process, resulting in the need for a dust removing process.
It is difficult to remove dust adhering with static electricity using an air blow. Even if the dust can be removed, it may adhere again.
Conventional countermeasures
Handled by workers
- Cost rise due to increased labor cost
- Long takt time
Countermeasures with static eliminators (ionizers)
It reduces cost and saves takt time.
Improvements and Effects
Words from the worksite
Reduced labor cost for addressing the problem
Labor cost per line $200/month x 10 lines x 12 months = $24,000/year
Although calculation of the takt time is difficult due to the relation with the previous and next lines, it has definitely been improved.
