Automatic measuring device and control method of the same

An automatic measuring device comprising:

• a measuring machine including a movable element provided to be displaceable with respect to a fixed element and configured to move forward and backward to be brought into contact with or away from a workpiece, and a displacement detector unit, including at least an encoder, or a camera to read an analog-type scale, configured to detect displacement of the movable element;
• and
• an automatic operation unit configured to automate the forward and backward movement of the movable element by power, the automatic measuring device being configured to automatically measure the workpiece using the measuring machine, wherein
• the automatic operation unit is configured to perform:
• a first forward-movement step of moving the movable element forward to bring the movable element into contact with the workpiece;
• a contact determination step of determining the contact between the movable element and the workpiece in the first forward-movement step by determining at least that a change in a position of the movable element, detected by the encoder, or the camera reading the analog-type scale, in the displacement detector unit in the first forward-movement step, becomes equal to or less than a predetermined contact determination threshold;
• a first backward-movement step of moving the movable element backward by a predetermined amount when the movable element is determined to be in contact with the workpiece in the contact determination step;
• and
• a re-forward-movement step of moving the movable element forward again to generate a predetermined measurement pressure between the workpiece and the movable element.