Abstract: The invention has the objective of offering a sensor that allows for measuring the pressure force of the springs on the carbon brushes as well as the actual brush pressure on its contact surface. This is obtained by measuring between the carbon brush, and there is limited space through its holder, and the contact surface and is therefore characterized by the fact that the sensor is thinner than 4 mm, and that it is provided with a target (4) which is suspended in the sensor (1) by means of a mechanically deformable section (3), and where the sensor is fitted with one or more strain gauges (2) that is/are set up as such that it can detect the shearing of the mechanical deformable measuring section under pressure. In contrast to the existing measuring sensors, the measuring strips also connect the suspension points of the mechanically deformable elements with the sensor and/or the suspended target or measuring point through which sensitivity increases and makes the sensor useful for such applications.

Abstract: The invention has the objective of offering a sensor the allows for measuring the pressure force of the springs on the carbon brushes as well as the actual brush pressure on its contact surface. This is obtained by measuring between the carbon brush, and there is limited space through its holder, and the contact surface and is therefore characterized by the fact that the sensor is thinner than 4 mm, and that it is provided with a target (4) which is suspended in the sensor (1) by means of a mechanically deformable section (3), and where the sensor is fitted with one or more strain gauges (2) that is/are set up as such that it can detect the shearing of the mechanical deformable measuring section under pressure. In contrast to the existing measuring sensors, the measuring strips also connect the suspension points of the mechanically deformable elements with the sensor and/or the suspended target or measuring point through which sensitivity increases and makes the sensor useful for such applications.

Abstract: A process for machining in situ the peripheral surface (1100) of a part rotating around an xx? axis (1), wherein a machining device is used comprising at least one plate (12) fixed to a frame and a tool holder (11) provided with a cutting tool (300) mounted on the said plate such that it can move along a YY? direction (3) which is substantially perpendicular to the xx? axis of rotation (1). The tool holder is installed on the plate (12) so that it can pivot around an axis oriented along a zz? direction represented by the point (4) which is substantially perpendicular to the YY? direction and to the xx? axis of rotation. By combining a rotation of the tool holder around the xx? axis and a translation of the center of rotation around the ZZ? axis (4) along the in-feed direction YY?, the active end of the cutting tool (300) is moved in a plane perpendicular to the ZZ? axis (4). The device may also move along the third XX? axis.

Abstract: Process for machining in situ the peripheral surface (1100) of a rotating part, rotating around an xx? axis (1), wherein a machining device is used comprising at least one plate (12) fixed to a frame and a tool holder (11) provided with a cutting tool (300), and mounted on the said plate such that it can move along a YY? direction (3) substantially perpendicular to the xx? axis of rotation (1). The tool holder is installed on the plate (12) such that it can pivot around an axis oriented along a ZZ? direction (4) substantially perpendicular to the YY? direction and to the xx? axis of rotation. By combining a rotation of the tool holder around the XX? axis and a translation of the centre (C) of rotation around the ZZ? axis along the in-feed direction YY?, a displacement is imposed on the active end of the cutting tool (300) in a plane perpendicular to the ZZ? axis. The device may also move along the third XX? axis.