THE HEAT DEFORMATION ANALYSIS IN BRIDGE CARRIER | ||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||
| Article 81, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Pages 144-153 PDF (603.32 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/amme.2008.39401 | ||
| Authors | ||
| TAECHAJEDCADARUNGSRI S.1, 2; SAENSUMRONG K.3; HORMDEE D.1, 4 | ||
| 1Researcher, Industry/University Cooperative Research Center (I/UCRC) in HDD Component, Khon Kaen University, Khon Kaen 40002, Thailand.+ | ||
| 2Assistant Professor, Dpt. of Mechanical Engineering, Khon Kaen University , Thailand. (Corresponding Author. | ||
| 3Graduate student, Dpt. of Mechanical Engineering, Khon Kaen University, Khon Kaen 40002, Thailand. | ||
| 4Assistant Professor, Dpt. of Computer Engineering, Khon Kaen University, Khon Kaen 40002, Thailand. | ||
| Abstract | ||
| ABSTRACT Bar lapping is a key process in Slider Micro-Fabrication Process of Hard Disk Drive (HDD) industry. The purpose this process is to remove a small amount of material so that the transducer Sensor Height (SH) variation across the bar is minimized. One of the main problems occurred during the lapping process is bar bowing, which damages both ends of slider bar causing the difficulty to control SH. In this study, the commercial ANSYS software is employed to evaluate the bar bowing profiles before and after the design improvement. Before the lapping process, the slider bar needs to be mounted on a bridge carrier with the wafer gripper, which functions as an adhesive between these two parts. The bridge carrier with wafer gripper and bar is then heated up in an oven in order to melt the adhesive for the bonding process. In this process, the bridge carrier is expanded and consequently causes the bar bow problem. In order to solve the problem, the stainless bar is inserted into the bridge carrier for the reinforcement. The results from the finite element model show that the deflection of the bar is reduced by 38%. The actual data of bar bow profile before the reinforcement is measured from the field. The results are similar to the profiles simulated via FEM. As a result, the conclusions from FEM could be applied as a guideline to the new bar lapping development. | ||
| Keywords | ||
| Lapping Process; Slider; Slider Bar; Bridge Carrier and Sensor Height | ||
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