Patent ID: 6754973
Filing Date: 2004-06-29
Classification: G01B

Abstract:
A peripheral surface shape measuring apparatus of a roll-like object which measures a peripheral surface shape of a roll-like object, comprising:a displacement amount measuring device which has a pinching device including two arms connected together at first end portions with a hinge and that pinch the roll-like object in a diameter direction of the roll-like object with a sensor part and a reference point part arranged opposite to each other in second end portions of the two arms, and which measures a displacement amount when the sensor part is relatively displaced in the diameter direction with respect to the reference point part; a moving device which moves the displacement amount measuring device from one end side of the roll-like object to another end side of the roll-like object in an axial direction of the roll-like object; a casing which supports the displacement amount measuring device and the moving device; and a pair of jacking devices which are arranged on the casing, each of the pair of jacking devices having a forked supporting part to be engaged on one of sides of a core of the roll-like object, wherein when the peripheral surface shape of the roll-like object is measured, the casing is detachably mounted on the roll-like object, and the pair of jacking devices adjust so that inclination of the casing with respect to the core of the roll-like object is eliminated so as to enable the displacement amount measuring device to move in parallel to a central axis of the roll-like object, and wherein the peripheral surface shape of the roll-like object is measured on the basis of the displacement amount of the sensor part accompanied by movement of the displacement amount measuring device.