Plunger device for defined rotation of tool, has plunger supported on work piece and applying pair of forces as pressure force such that working position required by user is realized in limit of degree of freedom of tool

摘要

The device has a plunger (6) mounted on a swift changer device (4) for an excavator lug. A tool is fastened to the device (4) to rotate a working axis, while the plunger is attached to the device (4). The plunger is supported on a work piece in a hydraulically driven manner and applies a pair of forces as a pressure force such that a working position required by user is realized in a limit of a degree of freedom of the tool.