Device for measuring inner diameter of through hole of coupling

Abstract

The invention discloses a device for measuring the inner diameter of a through hole of a coupling. The device comprises a laser ranging probe, a measurement bracket, a digital display screen, a start button, a reset button, a USB charging port,and a support rod, wherein the digital display screen, the start button, the reset button, and the laser ranging probe form a high-precision laser ranging system, the start button is pressed down outside the coupling, The sum of vertical distances between the probe and the upper and lower inner surfaces of the coupling through hole can be detected by controlling the laser ranging probe, and then the inner diameter of the coupling through hole can be obtained by adding the height of the laser ranging probe. The device provided by the invention is convenient, economical and efficient to use, particularly aims at technical problems of small diameter, difficult operation and inaccurate reading of the small-specification tubing coupling, avoids problems of inaccurate manual measurement and inconvenient operation, and can improve efficiency of production detection.

Description

technical field [0001] The invention belongs to the technical field of a diameter measuring device for a special thread internal through hole, in particular to a device for measuring the inner diameter of a collar through hole, in particular to a measuring device for the inner diameter of a special threaded collar through hole processed by a numerical control threading machine. Background technique [0002] At present, due to the diameter of the internal through hole of the special threaded coupling (such as figure 1 Middle Φd1) is located in the middle of the coupling, so the measuring claws of conventional vernier calipers cannot be reached. At present, the on-site measurement mainly uses the inner diameter micrometer to measure. When inspecting the special threaded coupling of the oil pipe, due to the small inner diameter, it will be difficult to use the inner diameter micrometer to measure the inside of the through hole of the coupling by hand, and it is impossible to en...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the diameter of the internal through hole of the special threaded coupling (such as figure 1 Φd1) is located in the middle of the coupling, so the measuring claws of conventional vernier calipers cannot reach

At present, the on-site measurement mainly uses the inner diameter micrometer to measure. When inspecting the special threaded coupling of the oil pipe, due to the small inner diameter, it will be difficult to use the inner diameter micrometer to measure the inside of the through hole of the coupling by hand, and it is impossible to ensure that the inner diameter micrometer is in line with the axis during the measurement. Therefore, the accuracy of the measurement cannot be guaranteed, that is, it is difficult to measure the diameter of the through hole inside the coupling with an inner diameter micrometer, and the operation efficiency is not high, and due to human factors, it is easy to cause irregular operation actions, which can easily lead to measurement errors

Images