| 摘要 |
The present invention relates to a tool head (46) and a tool (10) for mining of rock material by means of undercutting. The tool head (46) comprises an holder and a number of tools (10) provided at the periphery of the holder. Each tool (10) comprises a roller cutter rotatably journalled via bearing means to an attachment. The roller cutter has a number of cemented carbide buttons provided in a row along the periphery of the roller cutter. The tool head and the tools have opposite directions of rotation during machining. |
