| 摘要 |
The invention relates to a machining tool, especially a milling tool, comprising a shaft-like holder defining a longitudinal axis ( 13 ), a seat ( 9 ) being provided in the front face of the holder for a cutting plate that can be inserted into said holder. The cutting plate has a coupling part serving for mounting in the seat ( 9 ) of the holder. The coupling part has three ribs which project axially from the end surface of the cutting plate that is opposite the holder and which extend radially. Said ribs are provided for engagement in complementary grooves ( 31 ) configured in the seat ( 9 ) of the holder, the side walls ( 37 and 35 ) thereof forming driving surfaces and support surfaces, which interact for transmitting a machining torque, or as axial position safety-catch, with corresponding surfaces of the flanks of the ribs of the cutting plate. The driving surfaces and the supporting surfaces are formed by limited partial surfaces ( 43 and 41 ) of the side walls ( 37 and 35 ) of the grooves ( 31 ) whose other surfaces are retracted in relation to said partial surfaces ( 43 and 41 ) with the purpose of forming a spacing between the ribs and the walls of the grooves ( 31 ).
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