Method for measuring flatness deviations and curvature directions of components in a punching machine

A method for measuring flatness deviations and curvature directions of components in a punching machine comprising an upper measuring tool and a lower measuring tool in a form of a die comprising a central die part which can be moved downwards, the method comprising:

• measuring a distance between an upper starting position of the upper measuring tool and the die;
• placing a component to be measured onto the die;
• moving the upper measuring tool from the upper starting position thereof until an increase in a force being exerted on the upper measuring tool indicates a contact between the upper measuring tool and the component, and measuring a path of the upper measuring tool up until it contacts the component;
• comparing the distance of the upper measuring tool to the die and the path traversed by the upper measuring tool up until contacting the component with a starting thickness of the component and checking whether the central die part has moved downwards or remains in its starting position.