Hole cavity diameter measuring device and measuring method

Abstract

The invention relates to the technical field of geometric quantity measurement, in particular to a hole cavity diameter measuring device. According to the technical scheme, the hole cavity diameter measuring device comprises a measuring rod and a push rod, a ball head is arranged at one end of the measuring rod, a displacement sensor is arranged at the other end of the measuring rod, and a displacement rod of the displacement sensor can slide in the length direction of the measuring rod; and one end of the push rod is hinged with the middle part of the measuring rod. When the device is used, the size of a groove or a hole with a known size is measured firstly, and the displacement sensor is reset; then the measuring device is sent into a target hole cavity to enable the ball head to be incontact with the side wall of the hole cavity, the measuring rod is pushed to rotate around the contact point of the ball head and the part, the minimum value of the displacement sensor in the rotating process is measured, and thus, the diameter of the target cavity can be measured. The device can guarantee the measurement precision and accuracy, is simple and convenient in operation, is accuratein measurement, is repeatable, is high in measurement precision, and is portable.

Description

technical field [0001] The invention relates to the technical field of geometric quantity measurement, in particular to a cavity diameter measuring device and a measuring method. Background technique [0002] Large-size (deep) hole parts often appear in processing and assembly. In order to test the quality of processing or assembly, it is essential to measure the inner diameter of deep holes on site. Due to the large diameter and depth of the hole, it is difficult to measure with a general inner diameter micrometer, because when the operator uses the inner diameter micrometer to measure, he usually holds the rod of the micrometer with one hand, and then closes the fixed head to the workpiece, and rotates the micrometer head with the other hand , After the operator feels that the micrometer head is in contact with the part, take out the micrometer and observe the reading of the micrometer. Therefore, it can be seen from the detection operation process that the measurement da...

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned technical problems of inconvenient operation and low measurement accuracy of the existing large-size hole diameter measurement, the present invention provides a hole diameter measurement device to automatically prepare and disassemble medicines, which can ensure the accuracy of dispensing and improve the accuracy of dispensing medicines. Dispensing efficiency

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