Vernier caliper capable of effectively reducing Abbe error and measuring method

A vernier caliper and Abbe error technology, which is applied in the field of vernier calipers, can solve the problems of low measurement accuracy and large Abbe error, and achieve the effects of improving measurement accuracy, reducing Abbe error, and eliminating tilt

CN112857165AActive Publication Date: 2021-05-28HENAN POLYTECHNIC UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-05-28

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Abstract

The invention provides a vernier caliper capable of effectively reducing the Abbe error and a measuring method. The vernier caliper comprises main rulers and a vernier scale, the upper end and the lower end of the front side face of the vernier scale are each provided with a flange to form a main ruler containing groove, the main rulers are arranged in the main ruler containing grooves, the vernier scale is in sliding connection with the main scale, pressure sensors are symmetrically arranged in the main ruler containing grooves in the upper end and the lower end in the front-back direction, the pressure sensing devices are used for collecting pressure signals generated by the main rulers on the vernier scale, the signal output ends of the pressure sensing devices are connected with the signal input end of a processing module, and the signal output end of the processing module is connected with a display device; and the processing module is used for receiving pressure signals input by the pressure sensing devices, processing the pressure signals and then calculating to obtain a differential pressure signal value for representing the parallelism of the main line of the vernier scale and the main lines of the main rulers. The vernier caliper can solve the problems that an existing vernier caliper is large in Abbe error and low in measurement precision in the using process.
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Description

technical field

[0001] The invention relates to a measuring tool, in particular to a vernier caliper capable of effectively reducing Abbe errors. Background technique

[0002] In the conventional measuring tool industry, common vernier calipers are divided into three types: mechanical vernier calipers, dial vernier calipers and digital display vernier calipers. The mechanical vernier caliper is composed of a main ruler, a vernier ruler, a ruler body, and measuring claws. It is widely used in the field of machinery manufacturing because of its convenient use and good measurement stability. The vernier caliper with watch is based on the mechanical vernier caliper. It uses the rack drive gear to drive the pointer to display the value. The digital display vernier caliper is based on the vernier caliper with a table, using the rack to drive the circular grid to rotate, and using the photoelectric pulse counting principle to convert the linear displacement of the caliper claw int...

Examples

Embodiment Construction

[0032] Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

[0033] Such as Figure 2 to Figure 5 As shown, the vernier caliper of the present invention that can effectively reduce the Abbe error includes a main ruler 1 and a vernier ruler 2. The upper and lower ends of the front side of the vernier ruler 2 are formed with flanges to form a main ruler accommodating groove 3. The main ruler 1 is set in the main scale accommodating groove 3 and the vernier scale 2 is slidably connected with the main scale 1. The above-mentioned structure is a conventional structure of the existing vernier caliper and will not be repeated here.

[0034] In the present invention, pressure sensing devices are arranged symmetrically along the front and rear directions in the main ruler accommodating grooves 3 at the upper and lower ends, and the pressure sensing devices are used to collect the pressure signals generated by the main ruler 1 and ...