Digital display cylindrical caliper

Abstract

The invention relates to a digital display cylindrical caliper, which comprises a shell and main scale, a nut pair, a lead screw, a bearing pedestal, a depth gauge, inner measuring claws, an outer measuring claw, a rotary incremental encoder, a display screen and a pulse counter circuit board, and is characterized in that the lead screw is installed on the rotary incremental encoder and axially positioned through the bearing pedestal, the nut pair is connected with the lead screw, and movable claws of the inner and outer measuring claws and the depth gauge are connected with the nut pair; linear movements of the nut pair drive the lead screw to generate rotational movements, pulse electric signals are generated and transferred to the pulse counter circuit board, and the display screen is connected to respond through programming of a single-chip microcomputer. According to the digital display cylindrical caliper, observation in real time can be realized on the basis of a traditional vernier caliper, and a digital display problem caused by a circumstance that water goes into the general digital display caliper easily and fixed gratings are easy to be affected by stains is solved. The digital display cylindrical caliper combines advantages of electronics and machinery, and improves the measurement precision and accuracy of a digital display caliper, so that the scheme provided by the invention has sustainable development space.

Description

technical field [0001] The invention belongs to the field of engineering measurement and relates to a digital display caliper. Background technique [0002] Compared with the traditional vernier caliper, the digital display vernier caliper has the following advantages: [0003] 1. The digital display function greatly avoids the inaccurate reading caused by the observation problem of the human eye. [0004] 2. The conversion function of imperial system and metric system greatly saves our conversion time in the measurement process. [0005] 3. The reading lock function is more convenient for us to measure the reading. [0006] The above are the advantages that the traditional vernier caliper cannot match, but the digital display vernier caliper also has disadvantages compared with it: [0007] 1. The measurement accuracy of the digital display vernier caliper is not as good as that of the traditional vernier caliper. Due to the different mechanical structures, the general ...

AI Technical Summary

Problems solved by technology

[0010] In view of this, the purpose of the present invention is to provide a digital display cylindrical caliper, which can be observed in real time on the basis of the traditional vernier caliper; it solves the problem that the general digital caliper is easy to enter water and the fixed grid is easily affected by stains, which causes the digital display question

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