Development of the Gliding Hole of the Dynamics Compression Plate

11th Joint Conference on Chemistry in Conjunction with the 4th Regional Biomaterials Scientific Meeting

材料科学;化学;生物科学

Salim, U.A.^1 ; Suyitno^1 ; Magetsari, R.^2 ; Mahardika, M.^1

Department of Mechanical and Industrial Engineering, Gadjah Mada University, Yogyakarta, Indonesia^1

Department of Orthopedic and Traumatology, Dr. Sardjito General Hospital, Faculty of Medicine, Gadjah Mada University, Yogyakarta, Indonesia^2

关键词: Closed die forming;    Hole geometry;    Machining Process;    Pedicle screws;    Plate thickness;    Production cost;    Production time;    Relative movement;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/172/1/012060/pdf
DOI  :  10.1088/1757-899X/172/1/012060

来源: IOP

【 摘 要 】

The gliding hole of the dynamics compression plate is designed to facilitate relative movement of pedicle screw during surgery application. The gliding hole shape is then geometrically complex. The gliding hole manufactured using machining processes used to employ ball-nose cutting tool. Then, production cost is expensive due to long production time. This study proposed to increase productivity of DCP products by introducing forming process (cold forming). The forming process used to involve any press tool devices. In the closed die forming press tool is designed with little allowance, then work-pieces is trapped in the mould after forming. Therefore, it is very important to determine hole geometry and dimensions of raw material in order to success on forming process. This study optimized the hole sizes with both geometry analytics and experiments. The success of the forming process was performed by increasing the holes size on the raw materials. The holes size need to be prepared is diameter of 5.5 mm with a length of 11.4 mm for the plate thickness 3 mm and diameter of 6 mm with a length of 12.5 mm for the plate thickness 4 mm.