Patent ID: 6812850
Filing Date: 2004-11-02
Classification: F16P,G01B

Abstract:
A measuring apparatus comprising:a moving member which is moved to obtain information about a workpiece and might collide with a certain object; a moving device for moving the moving member; and a protector for preventing the moving member from colliding with the object, the protector including: a protector body secured to the moving member and disposed in a position wherein the protector body will contact the object prior to a collision between the moving member and the object; a sensor protruded from the protector body by a predetermined length to come in contact such that a distance between the object and the protector body has a predetermined value or less and deformed elastically by a contact with the object; a strain detector for detecting an amount of an elastic deformation of the sensor; and a controller for stopping the movement of the moving member by the moving device or setting the same movement in a reverse direction when the amount of the elastic deformation detected by the strain detector exceeds a predetermined amount.