Cutting tool with interchangeable blade and method for replacing an AC-blade

A cutting tool comprising

• a housing including a holding portion and a plurality of positive-locking elements;
• a rotational lever mounted pivotably to the housing;
• a blade arranged at the holding portion of the housing, the blade including a plurality of positive-locking elements;
• and
• a locking member coupled with the rotational lever and configured to lock the blade to the housing, the locking member reciprocatingly movable between a first position in which the blade is locked and a second position in which the blade is released, and the locking member having a positive-locking element configured to cooperate with the positive-locking elements of the housing cooperate to lock the blade in a given position to the housing,
• wherein the positive-locking elements of the blade further cooperate with the positive-locking elements of the housing and the locking member in such a way that substantially no moments are introduced into the rotational lever by virtue of cutting reaction force.

A cutting tool housing for use with an interchangeable blade, the housing comprising a holding portion configured to receive the interchangeable blade;

• a plurality of first positive-locking elements;
• and
• a locking member arranged movably on the housing for locking the interchangeable blade to the housing,
• wherein the locking member has a second positive-locking element that cooperates with the first positive-locking elements to jointly lock the blade in a given position to the housing.

A method of changing an interchangeable blade of a cutting tool, the method comprising:

• moving a locking member arranged on a rotational lever into a second position to release a first blade;
• pulling the first blade out of a housing of the cutting tool;
• inserting a second blade into the housing;
• and
• moving the locking member into a first position to lock the second blade in a given position to the housing,
• wherein the movement of the locking member includes a rotation of the locking member and the rotational lever.