| 摘要 |
PURPOSE:To simplify the structure and make a small capacity device by serving the part forming a hydraulic chamber in the slide made of casting only as a coil pan formed of a thin metallic plate. CONSTITUTION:At the operation of press, a hydraulic pump 29 is started to supply constantly hydraulic oil discharged from a discharging spot 30 to a hydraulic chamber 22 through a supply port 24, and an oil path 25. Therefore, the hydraulic chamber 22 is filled with constantly hydraulic oil, a ball cup 14 is setted upward to receive a spherical part 13a of a connecting rod 13. The latter two of a oil pan 18, ball cup 14 and a seal ring 16 forming a hydraulic chamber 22 have little difference in comparison with the convertioned ones, but the oil pan 18 consists of the thin metallic plate and the like and is smaller, lighter and easier to manufacture than the conventional cylinders. |
