| Author | Chanchai Chairut |
| Note | A thesis submitted in partial fulfillment of the requirements for the
degree of Master of Science in
Mechatronics, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | In this research is mainly focused on Twist and Tilt (TNT) of Hard Disk Drive
(HDD) after passing top cover installation. The TNT measurement especially the Media-
Arm delta height is the critical parameter and has high impact to the yield performance of
servo testing. This study propose to estimate and optimize factors of Auto Top Cover
(ATC) machine and materials to achieve TNT target. There are 5 parameters such as Precompression,
Floating pin, Motor to Base Assembly (MBA) D to A, MBA flange height,
MBA flange parallel. Design of Experiment (DOE) by full factorial design with replication
to achieve target Media-Arm delta height -1.210 mm. The best setting parameters to
achieve target of TNT at ATC pre-compression at 4 kg, enable ATC floating pin, MBA
datum D to A at 18.71 mm, Flange height at 1.78 mm and flange parallel at 0.006 mm. The
result from this experiment are useful and good result to improve Twist and tilt of hard
disk drive assembly process. |
| Year | 2015 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Microelectronics (ME) |
| Chairperson(s) | Bohez, Erik L. J. ; |
| Examination Committee(s) | Mongkol Ekpanyapong ;Silamon Chaipak; |
| Scholarship Donor(s) | Western Digital-NECTEC, Thailand ;AIT Fellowship; |