Design, Modeling and Engineering Calculations of A Mini Drill Press For Educational and Hobby Applications
9th INTERNATIONAL CONGRESS ON ENGINEERING AND SCIENCES, İstanbul, Türkiye, 25 - 26 Temmuz 2026, ss.1-14, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.1-14
- Dokuz Eylül Üniversitesi Adresli: Evet
Özet
This study presents the design, three-dimensional modeling, and engineering calculations of a low-cost, compact, and portable benchtop mini drill press intended for educational and hobby applications. The design process was carried out based on machine design principles, considering structural strength, rigidity, vibration behavior, and operational safety. The developed system consists of a DC electric motor, spindle, bearing assembly, frame, support column, worktable, and feed mechanism. A 24 V, 250 W RS775 DC motor was selected as the driving unit, and its rotational speed was controlled using a PWM-based motor speed controller. The maximum drilling capacity was specified as 10 mm, and a safety factor of 2 was adopted in the design process. Angular velocity and torque were calculated based on the motor specifications, while the spindle dimensions were determined according to torsional stress analysis. In addition, appropriate bearings were selected, and their service life was evaluated using the L10 bearing life equation. All system components were modeled using three-dimensional CAD software, and a complete assembly model, technical drawings, exploded view, and bill of materials were prepared. To ensure manufacturability and cost-effectiveness, commercially available standard machine elements and mechanical components were employed. Furthermore, an approximate production cost analysis, including the motor, bearings, steel materials, and fastening elements, was conducted, demonstrating that the proposed design provides an economical solution for educational institutions and small-scale workshops.The results indicate that the developed mini drill press satisfies the required criteria for mechanical strength, operational stability, and safe operation. Owing to its compact structure, low manufacturing cost, and practical functionality, the proposed system represents a suitable drilling solution for vocational and technical education laboratories, universities, makerspaces, and hobby workshops.