| 摘要 |
The invention refers to a device and a tool for cold expansion of fastener holes. The advantages of the device and tool are in the possibility to control the degree of cold expansion. The device (61) comprises a hydraulic cylinder (27) in which a piston (26) with a piston rod (25) is placed, to whose end a mandrel (1) of a tool (60) is fixed. To flange (9) a threaded bush (7) of the tool (60) is immovably fixed, such that in an axial blind hole (55) of the piston rod (25), a linear displacement sensor (34), is positioned, immovably fixed to the hydraulic cylinder (27). A magnet (33) is designed for activating the linear displacement sensor (34), which is connected to the control block (38).
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