The piston is the key part of the engine and the heart of the engine. The quality of the piston directly affects the performance of the engine. Shandong Rizhao Shuanggang Machinery & Electronics Co., Ltd. is a professional company that can directly produce pistons with diesel engine manufacturers. In order to match the domestic large diesel engine manufacturers, it can also reduce the cost of piston manufacturing. The piston manufacturers independently develop and process key process equipment. It is imperative. After a year of hard work, the automatic CNC fine-engine piston elliptical special machine tool was finally developed and officially put into production in 2002. Figure 1 shows a schematic of this machine tool.