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Journal : Infotekmesin

Analisis Perpindahan Gaya SideLoad Pegas Suspensi Tipe C Menggunakan Finite Element Method (FEM) Budi, Sigit Setijo; Lukman Sanjaya, Firman; Fatkhurrozak, Faqih; Syarifudin, Syarifudin; Ariyanto, Nur Aidi
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1783

Abstract

The suspension must provide comfort and safety to the vehicle. Therefore, it is necessary to analyze the load's effect on the pressure distribution on the axle so that the spring strength from the sideload force can be simulated. This study aims to analyze the sideload force of type C suspension springs using FEM. Spring variations are the number of different threaded coils, namely 11, 12, and 13. In the FEM simulation, the spring is given a load until 50mm, 100mm, 150mm, 200mm, and 250mm displacement occurs. The loading spreads to the X, Y, and Z axes. Each direction of the axis is measured by the pressure that occurs. The results showed that the pressure values that occur on the X, Y, and Z axes decreased with each increase in the number of screw coils. The lowest X-axis pressure reduction occurs in thread 12 at 63%. Meanwhile, the pressure on the Y axis decreased by 27% on the spring screw 12. The highest decrease in pressure on the Z axis occurred by 34% on the spring screw 12 compared to the spring screw 11.
Rancang Bangun Jig & Fixture Pemesinan Computer Numerical Control (CNC) Milling Dengan Area Kerja 300x300mm Ariyanto, Nur Aidi; Budi, Sigit Setijo
Infotekmesin Vol 17 No 1 (2026): Infotekmesin: Januari 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v17i1.2849

Abstract

Limitations in machining accuracy and efficiency on CNC milling machines with a 300 × 300 mm working area are often caused by the use of general-purpose jig and fixture (J&F) designs that are not tailored to the characteristics of the machine and workpiece. This condition can lead to vibration, dimensional errors, and inefficient use of time and material. The research gap addressed in this study lies in the limited availability of systematic jig and fixture designs for CNC milling machines with restricted working areas. This research aims to design a jig and fixture compatible with a 300 × 300 mm CNC milling machine to improve clamping stability, machining accuracy, and process efficiency. The VDI 2222 design methodology is applied through four stages: planning, conceptualization, design, and completion, supported by Computer-Aided Design (CAD). Two design alternatives are evaluated, and the optimal concept is selected based on clamping stability criteria. The results are a final jig and fixture design and detailed engineering drawings ready for prototype fabrication, suitable for small-scale CNC milling machines.