Gears are commonly used in every field of industry as power and motion transmission elements. According to the usage areas, they are manufactured from materials such as steel, aluminium, plastics, cast and bronze. There are different manufacturing methods according to material type. Plastic gears are preferred in textile, automotive and aviation industries where the supported load is low, and corrosion and lightness are considerably important. They work more quietly than metal gears. Plastic gears are manufactured by an injection moulding or hobbing method. The disadvantages of the plastic injection method are high cost of the injection moulds and strength losses in the moulded parts due to the internal clearance faults, whereas the disadvantage of the hobbing method is defects in tooth profiles due to operational faults. In this study, wear strengths of plastic spur gears manufactured via a three-dimensional printer with the fused deposition modelling technique as an alternative manufacturing method were experimentally examined. In the experimental studies, polylactic acid pinion gear manufactured with the three-dimensional printer was subjected to wear tests with St37-2 gear. Wear strengths of plastic spur gears were compared in wear tests performed with Forschungsstelle für Zahnrader und Getriebebau equipment under various loads and rotational speeds. Wear depths that occurred in plastic gears were examined via coordinate measuring machine equipment. As a result of the experimental studies, it is found that wear is increased with the increase of load affecting the gear, and wear is decreased with the increase of rotational speed. As a result of this study, it was shown that plastic spur gears manufactured with three-dimensional printers can be used in areas where lightness and corrosion resistance is important under low loads.

齿轮通常用于工业的各个领域作为动力和运动传输元件。根据使用领域，它们由钢、铝、塑料、铸件和青铜等材料制成。根据材料类型有不同的制造方法。塑料齿轮是纺织、汽车和航空工业的首选，这些行业的支撑载荷较低，并且耐腐蚀和轻便性非常重要。它们比金属齿轮更安静地工作。塑料齿轮是通过注塑或滚齿的方法制造的。注塑法的缺点是注塑模具成本高，由于内部间隙故障导致成型件强度损失，而滚齿法的缺点是由于操作故障导致齿形缺陷。在这项研究中，以熔融沉积建模技术作为替代制造方法，通过三维打印机制造的塑料直齿轮的磨损强度进行了实验检查。在实验研究中，用三维打印机制造的聚乳酸小齿轮用 St37-2 齿轮进行磨损试验。在使用 Forschungsstelle für Zahnrader und Getriebebau 设备在各种负载和转速下进行的磨损测试中，比较了塑料正齿轮的磨损强度。通过坐标测量机设备检查塑料齿轮中发生的磨损深度。实验研究的结果发现，磨损随着影响齿轮的载荷的增加而增加，磨损随着转速的增加而减少。作为这项研究的结果，