Tool and method for measuring inner diameter of cylinder

• Main Authors: ZHANG ZHIQIU, TIAN AOKE, LI ZENGJUN, ZHOU HONG, ZHOU XIAOGANG, FAN CHANGHAI
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2021
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The invention discloses a tool and method for measuring the inner diameter of a cylinder, and belongs to the field of measurement, and aims to improve the measurement precision of the inner diameter of an oversized cylinder. The inner diameter measurement tool comprises a standard square rod, a digital display depth dial indicator, a fixed connecting piece and a reset separation blade, and a measurement mounting hole is formed in the right middle of the standard square rod; the digital display depth dial indicator is connected with the standard square rod through a fixed connecting piece; a telescopic rod of the digital display depth dial indicator can pass through the measurement mounting hole; and the axial direction of a telescopic rod of the digital display depth dial indicator is perpendicular to the radial direction of the standard square rod. The measuring tool is simple in structure and reliable in operation, the measuring method is simple and convenient, the inner diameter of the oversized cylinder c