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Title: พารามิเตอร์ที่เหมาะสมสำหรับการเจาะรูแขนกลหัวอ่านฮาร์ดดิสก์ไดร์ฟ
Other Titles: Appropriate Parameters for Drilling Hard Disk Drive Arm
Authors: ผู้ช่วยศาสตราจารย์ ดร.สรรฐติชัย ชีวสุทธิศิลป์
กรานต์ หิรัณยวัฒน์
Issue Date: Mar-2015
Publisher: เชียงใหม่ : บัณฑิตวิทยาลัย มหาวิทยาลัยเชียงใหม่
Abstract: The objective of this independent study is to determine the appropriate parameters for drilling a hard disk drive arm. Due to the current parameters when made the process capability of drilling a hard disk drive arm (Cpk) less than standard value at 1.33 and impact to high defect ratio at assembly process around 15%, it is necessary to control the appropriate parameters by conducting fractional factorial design and response optimizer to improvement drilling process. The experimental result show that there were 5 appropriate parameters: Feed rate (A) 100 mm/min. Peck drill cycle (B) 0.5 mm. Spindle speed (C) 3,000 rev/min. Drill run out (D) 0 micron. DLC coating drill (E). These parameters were applied in this organization. The results show that after the parameters were applied the process capability of drilling a hard disk drive arm (Cpk) is more than the target, for the hole position X of hard disk drive arm (Cpk) increased from 0.52 to 2.20 and hole position Y of hard disk drive arm (Cpk) increased from 0.68 to 2.85. The benefit of drilling improvement is it can help reduce the defect of hole position both X and Y position from 15% to 1.2% approximately.
Appears in Collections:ENG: Independent Study (IS)

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