1.mechanism of compensation of errors in measurement systems for machine tools, the measuring system being equipped with a rigid rule body that constitutes the scale of length measurement of a sensor and a rigid body of support that supports the rule, the rule body being fixed in known manner to its supporting body including between them an elastic intermediate layer, characterized in that at least one of the ends of the rigid body of the rule acts an adjustable compression or extension device so that, as a consequence of the variation of length of the graduated scale, the errors are compensated, or the indicated measure is corrected, respectively. 2.mechanism of compensation of errors in measurement systems for machine tools, according to claim 1, characterized in that the graduated scale for its protection from the action of the environment is housed in a rigid hollow body and because on both ends of the scale graduated in the hollow body actuate two compression or extension devices. 3.mechanism of compensation of errors in measurement systems for machine tools, according to claim 2, characterized in that on the ends of the graduated scale act in the axial direction and opposite direction two springs that on the opposite side to the graduated scale are supported by through an axial ball bearing in a nut, said nut being adjustable in axial direction within a receptacle housing the springs and is fixed to the front wall of the hollow body. 4. Mechanism of compensation of errors in measurement systems for machine tools, according to claim 1, characterized in that the adjustable device consists of a lever that transmits to the rule the efforts of a spring with adjustable action. 5. Mechanism of compensation of errors in measurement systems for machine tools, according to claim 4, characterized in that the lever transmits the spring force by means of a adjustable pin by screwing on the same lever. 6.mechanism of compensation of errors in measurement systems for machine tools, according to claims 4 and 5, characterized in that between the python and the rule there is an intermediate element consisting of a first body that receives the efforts of the python and the transmits butt to the side face of the rule and a second body in contact with one of the bases of the rule and consisting of a device that prevents vertical movement of the rule. 7. Mechanism of compensation of errors in measurement systems for machine tools, according to claims 2 and 6, characterized in that the device that prevents vertical movement of the rule consists of a ball in contact with the inner wall of the hollow and adjustable rigid body in height by the action of a conical head screw. 8.mechanism of compensation of errors in measurement systems for machine tools. (Machine-translation by Google Translate, not legally binding)
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