การพยากรณ์ความขรุขระผิวชิ้นงานอลูมิเนียมในกระบวนการกัดแบบหัวบอลโดยการใช้ลมเป่า

• Main Author: กีรติ ครุณาสวัสดิ์
• Other Authors: สมเกียรติ ตั้งจิตสิตเจริญ
• Format: Theses and Dissertations
• Language: Thai
• Published: จุฬาลงกรณ์มหาวิทยาลัย 2011
• Subjects: อุตสาหกรรมอะลูมินัม > แง่สิ่งแวดล้อม; อะลูมินัม; โลหะ > การตัด
• Online Access: https://digiverse.chula.ac.th/Info/item/dc:43542
• Institution: Chulalongkorn University

The objective of this research is to propose an equation of surface roughness prediction by using air blow. The use of air blow can preserve the environment and reduce the coolant cost. This research utilizes the response surface analysis with the Box-Behnken design to develop the predict surface roughness model. The aluminum (Al 6063) is employed for the cutting tests and the cutting tool is the coated carbide ball end mill (TiAlN). The experimentally obtained surface roughness model in this research is developed and proposed by using the exponential, which is obtained by using the multiple linear regression analysis. The parameters in the model consist of the cutting speed, the feed rate, the depth of cut, the tool diameter and the air blow pressure. The cutting force is measured by employing the dynamometer during the process. The inprocess cutting forces showed the same trend with the surface roughness, which can help to analyse the effects of the parameters on the surface roughness. The prediction interval with 95% confident level is proposed to verify the predicted surface roughness from the model. The experimentally obtained results showed that the best cutting conditions are the cutting speed of 2,600 rpm, the feed rate of 0.02 mm/rev, the depth of cut of 0.75 mm, the tool diameter of 6 mm, and the air blow pressure of 3 bar.