Tire inner surface shape measuring device and tire inner surface shape measuring method

• Main Author: YAMAGIWA TOSHIYUKI
• Format: Patent
• Language: Chinese; English
• Published: 02.04.2019
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The present invention provides a tire inner surface shape measuring device and a tire inner surface shape measuring method capable of automatically measuring the inner surface of a pneumatic tire having a plurality of dimensions at high precision. The tire inner surface shape measuring device includes a tire fixing unit that fixes and holds a transported pneumatic tire to a measuring table; a tirecentering unit that presses the held tire from the outer circumference side to the inner circumference side by using three or more bar-shaped rollers arranged at equal angles to perform centering; and a tire inner surface shape measuring unit that measures the inner surface shape of the tire while rotating the centered tire. The tire inner surface shape measuring unit uses an eddy current sensoras a tire inner surface detecting sensor. The eddy current sensor is inserted into the inner chamber of the tire and pressed against the surface of the tire, and measures the distance from the inner surface of the tire to the