Patent ID: 9186859
Filing Date: 2015-11-17
Classification: B30B,F16N

Abstract:
1. Method for operating a press, the press including a movable ram for reshaping a workpiece, a press drive comprising a motor and a transmission connecting the motor with the ram, the transmission comprises at least one sliding bearing having at least one lubricating point, each of said at least one sliding bearing for supporting a first transmission element against a second transmission element in a sliding manner, the first transmission element and the second transmission element have a bearing gap therebetween, a lubricating arrangement including a lubricant source in fluid communication with a lubricant distributor having several lubricant outlets, each lubricant outlet in direct operative fluid communication with one of the at least one lubricating point of the transmission, each of the lubricant outlets in fluid communication with the bearing gap for causing a lubricant film to form between the first transmission element and the second transmission element having a predetermined minimum thickness during reshaping of the workpiece by the ram defining a first press operating state, a second press operating state defined by the lubricant film being less than the predetermined minimum thickness or completely displaced during reshaping of the workpiece by the ram, said method comprising the following steps: driving of the ram by the press drive, controlling or regulating the position and/or the force of the ram, supplying lubricant with the use of the lubricating arrangement to at least one lubricating point of the at least one sliding bearing of the transmission, wherein the first transmission element is supported in a sliding manner on the second transmission element, adjusting as a function of the press operating state between a first lubricant pressure (p