Improvements in a tool holder for machine tools, which includes on a support guide means in translation and locking in position, for a guide to regulate an organ in a material of great hardness, especially a carbide pad of tungsten, and which also includes screwed onto the same support, a threaded stem whose axis is parallel to the plane of translation and which acts on the guide to move it and position it on the support, characterized in that the threaded stem (16) and the guide (10) mentioned cooperate by means (17, 18) capable of forcing the guide (10) to move in its sliding direction (X1-X2) on the support (1) in one or the other direction, depending on the displacements axial of the threaded stem (16) and according to the direction of these displacements. (Machine-translation by Google Translate, not legally binding)
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