Servo press machine
AssigneeAida Engineering, Ltd.
InventorTakashi KOSHIMIZU
Life of this patent
Estimating the term…
Abstract
A servo press machine includes an eccentric shaft, a connecting rod, a slide, an eccentric shaft-side sliding surface, a connecting rod-side sliding surface, an oil supply port, and a supply mechanism. The oil supply port opens on the eccentric shaft-side sliding surface or the connecting rod-side sliding surface, and supplies a lubricant between the eccentric shaft-side sliding surface and the connecting rod-side sliding surface. The supply mechanism supplies the lubricant to the oil supply port. The eccentric shaft-side sliding surface is formed on the eccentric shaft that is rotationally driven by a servomotor. The oil supply port is formed on the connecting rod-side sliding surface of the connecting rod that moves upward and downward due to the rotational driving of the eccentric shaft.
Claims11
A servo press machine including an eccentric shaft which is rotationally driven by a servomotor, a connecting rod which moves upward and downward due to the rotational driving of the eccentric shaft, and a slide which moves upward and downward as the connecting rod moves upward and downward, the servo press machine comprising:
- an eccentric shaft-side sliding surface on which a press load during press working acts;
- a connecting rod-side sliding surface on which the press load acts and which slides with the eccentric shaft-side sliding surface;
- an oil supply port which opens on the eccentric shaft-side sliding surface or the connecting rod-side sliding surface and which supplies a lubricant between the eccentric shaft-side sliding surface and the connecting rod-side sliding surface;
- and
- a supply mechanism which supplies the lubricant to the oil supply port,
- the supply mechanism delivering the lubricant to the oil supply port and pressurizing the lubricant during a press load period in which the oil supply port is closed by the connecting rod-side sliding surface or the eccentric shaft-side sliding surface on which the press load is acting, and
- the supply mechanism supplying the pressurized lubricant between the eccentric shaft-side sliding surface and the connecting rod-side sliding surface from the oil supply port during a non-press load period in which the press load is not acting on the eccentric shaft-side sliding surface and the connecting rod-side sliding surface.
A servo press machine including an eccentric shaft which is rotationally driven by a servomotor, a connecting rod which moves upward and downward due to the rotational driving of the eccentric shaft, a slide which moves upward and downward as the connecting rod moves upward and downward, and a connecting section which connects a tip section of the connecting rod and the slide with each other, the servo press machine comprising:
- a connecting rod tip section-side sliding surface on which a press load during press working acts;
- a connecting section-side sliding surface on which the press load acts and which slides with the connecting rod tip section-side sliding surface;
- an oil supply port which opens on the connecting rod tip section-side sliding surface or the connecting section-side sliding surface and which supplies a lubricant between the connecting rod tip section-side sliding surface and the connecting section-side sliding surface;
- and
- a supply mechanism which supplies the lubricant to the oil supply port,
- the supply mechanism delivering the lubricant to the oil supply port and pressurizing the lubricant during a press load period in which the oil supply port is closed by the connecting section-side sliding surface or the connecting rod tip section-side sliding surface on which the press load is acting, and
- the supply mechanism supplying the pressurized lubricant between the connecting rod tip section-side sliding surface and the connecting section-side sliding surface from the oil supply port during a non-press load period in which the press load is not acting on the connecting rod tip section-side sliding surface and the connecting section-side sliding surface.
Dependencies are inferred from the claim text.