<div id="heading"><h2 class="berschrift2"><a name="mod_1548833839241_0001"></a><a name="text_mod_1548833839241_0001"></a><a name="_Toc227140521"></a>Aligning the clamping device with the test specimen</h2></div><p class="dlModulbegrenzung0"> </p><p class="HText">To achieve the greatest possible accuracy, the clamping device must be aligned on the workpiece. For this, a test specimen can be used. A test specimen can take the form of a test ring, a test shaft or a test workpiece [this is approximated on the workpiece contour].</p><p class="dlModulbegrenzung0"> </p><p class="HText">To align the clamping device using the test specimen, the functional unit fixing screws must be readily accessible.</p><p class="dlModulbegrenzung0"> </p><p class="dlModulbegrenzung0"> </p><p class="dlModulbegrenzung0"> </p><p class="dlModulbegrenzung0"> </p><p class="dlModulbegrenzung0"> </p><p class="dlModulbegrenzung0"> </p><p class="dlModulbegrenzung0"> </p><p class="dltext"> </p><p class="dlseitenwechsel"> </p><p class="dlseitenwechsel"> </p><p class="dlModulbegrenzung0"> </p><ol class="hb-list hb-list--decimal"><li class="hb-list__item">As described in the »Preparation of the machine for installation« chapter, prepare for the following steps.</li><li class="hb-list__item">Install the appropriate clamping element for the test specimen and changing part [see »Installation of clamping element« and »Installation of changing parts« chapters].</li><li class="hb-list__item">Clamp the test specimen.</li><li class="hb-list__item">Unfasten the fixing screws on the functional unit a few turns without removing them.</li><li class="hb-list__item">Align the clamping device [see alignment process from the »Installation of functional unit of an alignable clamping device« chapter].</li><li class="hb-list__item">Ensure that the fixing screws on the functional unit are tightened back down after the alignment process to the specified tightening torque [see »Screw tightening torques« chapter].</li></ol>