Calibration device for Hall position annunciator linear displacement test system

Abstract

The utility model belongs to the field of metering calibration, and relates to a calibration device suitable for a Hall position annunciator linear displacement test system, which comprises a digital display dial indicator and a calibration clamp, the calibration clamp comprises a smooth surface cylinder, a positioning cylinder and an external thread cylinder which are connected in sequence, coaxial through holes are arranged in the smooth surface cylinder, the positioning cylinder and the external thread cylinder, and the digital display dial indicator is arranged in the through holes. The digital display dial indicator is installed in the through hole, the external thread cylinder is connected with a positioning plate of the linear displacement testing system, the sensing end of the linear displacement testing system is arranged at the front end of a dial rod of the digital display dial indicator, and the calibration device is installed on the linear displacement testing system in a horizontal posture. According to the utility model, the installation of the standard instrument digital dial indicator and the calibrated linear displacement test system is ensured to accord with the Abbe principle, and the accurate transmission of the standard linear displacement is realized; the calibration clamp device is stable in structure, convenient to install, high in portability and not limited to calibration occasions.

Description

Technical Field

[0001] The utility model belongs to the field of metrological calibration, and relates to a calibration device for a linear displacement test system of a Hall position signaler. Background Technique

[0002] The linear displacement test system of the Hall position signaler is composed of a linear displacement sensing device and a display component. To achieve on-site calibration of the linear displacement test system, two aspects need to be considered: one is the selection and installation of standard instruments, and the other is how to ensure the calibration quality and efficiency. Considering the structural characteristics of the linear displacement test system, the coaxial synchronization method is preferred. The coaxial synchronization method means that the movement trajectories of the standard instrument and the linear displacement test system to be calibrated are spatially coincident. By comparing the standard displacement value with the measured displacement, the indication error of the linear displacement test system can be obtained. In the prior art, there is no installation and calibration device for the linear displacement test system of the Hall position signaler. Therefore, it is necessary to propose a calibration device applicable to the linear displacement test system of the Hall position signaler, which realizes the connection and fixation of the standard instrument and the linear displacement test system and meets the Abbe principle; the selected standard instrument has strong portability and can meet the measurement uncertainty requirements of the object to be calibrated. Content of the Utility Model

[0003] The purpose of the utility model: to propose a calibration device for a linear displacement test system of a Hall position signaler, which can realize the connection and fixation of the standard instrument and the linear displacement test system and meet the Abbe principle; the selected standard instrument has strong portability and can meet the measurement uncertainty requirements of the object to be calibrated, and the calibration work can be carried out in any occasion without limitation.

[0004] Technical Solution:

[0005] A calibration device for a linear displacement test system of a Hall position signaler includes a digital display micrometer and a calibration fixture. The calibration fixture includes a smooth cylindrical body, a positioning cylindrical body, and an external threaded cylindrical body connected in sequence. A coaxial through hole is provided inside the smooth cylindrical body, the positioning cylindrical body, and the external threaded cylindrical body. The digital display micrometer is installed in the through hole. The external threaded cylindrical body is connected to the positioning plate of the linear displacement test system. The induction end of the linear displacement test system is arranged at the front end of the micrometer rod of the digital display micrometer. The calibration device is installed on the linear displacement test system in a horizontal posture.

[0006] Further, the smooth cylindrical body, the positioning cylindrical body, and the external threaded cylindrical body are arranged in sequence in the shape of a coaxial stepped shaft.

[0007] Further, the digital display micrometer is in clearance fit with the coaxial through holes provided inside the smooth cylindrical body, the positioning cylindrical body, and the external threaded cylindrical body.

[0008] Further, fastening screws are arranged on the outer circle of the smooth cylindrical body.

[0009] Further, the external thread cylinder is threadedly connected to the positioning plate of the displacement test system.

[0010] Further, the diameters of the positioning cylinders are all larger than the diameters of the smooth cylinder and the external thread cylinder.

[0011] Further, the movable stroke of the digital display micrometer is not less than the measurement range of the displacement test system.

[0012] Beneficial effects:

[0013] The present invention provides a calibration device applicable to the linear displacement test system of a Hall position signaler, ensuring that the installation of the standard instrument, the digital display micrometer, and the calibrated linear displacement test system complies with the Abbe principle, and achieving the accurate transmission of the standard linear displacement; the calibration fixture device has a stable structure, is convenient to install and highly portable, and is not limited by the calibration occasion. Description of the drawings

[0014] Figure 1 is a layout schematic diagram of the calibration device of the present invention;

[0015] Figure 2 is a structural schematic diagram of the calibration fixture of the present invention;

[0016] Figure 3 is Figure 2 a top view of the structural schematic diagram.

[0017] Among them: 1 - smooth cylinder, 2 - positioning cylinder, 3 - external thread cylinder, 4 - fastening screw a, 5 - fastening screw b, 6 - digital display micrometer, 7 - positioning plate. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] The present utility model provides a calibration device for a linear displacement test system of a Hall position signaler. The device consists of a standard instrument, a digital display micrometer 6, and a calibration fixture. The calibration fixture is composed of a smooth cylindrical body 1, a positioning cylindrical body 2, an externally threaded cylindrical body 3, and two fastening screws. The smooth cylindrical body 1, the positioning cylindrical body 2, and the externally threaded cylindrical body 3 are integrated and processed by a coaxial stepped shaft. During installation, the end of the externally threaded cylindrical body 3 is horizontally screwed into the positioning plate 7 of the linear displacement test system, and the positioning cylindrical body 2 will limit the fixture. Two fastening screws a 4 and fastening screws b 5 of the same size and shape are arranged in sequence at the same generatrix position of the smooth cylindrical body 1. Manually loosen the two fastening screws, insert the stem of the digital display micrometer 6 horizontally from the end of the smooth cylindrical body 1, and lead it out from the end of the externally threaded cylindrical body 3, and lock it with the two fastening screws located on the smooth cylindrical body 1.

[0020] The coaxial stepped shaft contains a through hole with a single size, and the diameter of the through hole has a clearance fit with the stem of the digital display micrometer 6.

[0021] The externally threaded cylindrical body 3 is the same as the product installation component of the displacement test system.

[0022] The diameter of the positioning cylindrical body 2 is larger than the diameters of the smooth cylindrical body 1 and the externally threaded cylindrical body 3, so that after the calibration fixture is screwed tightly to the displacement test system, it can reach the set position.

[0023] The two fastening screws are located on the same generatrix of the smooth cylindrical body 1, arranged in sequence and with the same size.

[0024] After the digital display micrometer 6 passes through the through hole of the calibration fixture, the movable stroke of the digital display micrometer 6 should not be less than the measurement range of the displacement test system.

[0025] The working principle of this device is as follows: The present utility model uses the digital display micrometer 6 as a standard instrument and combines it with the calibration fixture to form the calibration device of the present invention. During measurement, after installing the standard instrument, the digital display micrometer 6, to the linear displacement test system through the calibration fixture, it can ensure that the moving trajectories of the stem of the digital display micrometer 6 and the induction end of the linear displacement test system are consistent. It belongs to the coaxial synchronous method for on-site calibration of linear displacement, and the installation method of the standard instrument and the object to be measured meets the Abbe principle. During the calibration process, make the head of the stem of the digital display micrometer 6 contact the induction end of the linear displacement test system, zero the digital display micrometer and the linear displacement test system at this position, and move the induction end of the linear displacement test system at a certain linear displacement interval. During this process, the induction end of the linear displacement test system will push the stem of the digital display micrometer to generate a corresponding displacement. By reading the output value of the display component of the linear displacement test system and the value of the digital display micrometer, the deviation between the standard value of the digital display micrometer and the output value of the linear displacement test system can be compared, and the indication error of the linear displacement test system can be obtained, thus completing the calibration.

Claims

1. A calibration device for a Hall position signaler linear displacement test system, characterized in that: It includes a digital micrometer and a calibration fixture. The calibration fixture includes a smooth cylinder, a positioning cylinder, and an externally threaded cylinder which are connected in sequence. Coaxial through holes are arranged inside the smooth cylinder, the positioning cylinder, and the externally threaded cylinder. The digital micrometer is installed in the through hole. The externally threaded cylinder is connected to the positioning plate of the linear displacement test system. The sensing end of the linear displacement test system is arranged at the front end of the digital micrometer rod. The calibration device is installed on the linear displacement test system in a horizontal posture.

2. The calibration device for the Hall position signaler linear displacement test system according to claim 1, characterized in that: The smooth cylinder, the positioning cylinder and the external thread cylinder are arranged in sequence in the shape of coaxial stepped shafts.

3. The calibration device for the Hall position signaler linear displacement test system according to claim 2, characterized in that: The digital display micrometer is matched with the clearance of the coaxial through holes arranged inside the smooth cylinder, the positioning cylinder and the external thread cylinder.

4. The calibration device for the Hall position signaler linear displacement test system according to claim 3, characterized in that: The outer circle of the smooth cylinder is provided with fastening screws.

5. The calibration device for the Hall position signaler linear displacement test system according to claim 1, characterized in that: The external threaded cylinder is connected to the positioning plate of the displacement testing system through threads.

6. The calibration device for the Hall position signaler linear displacement test system according to claim 1, characterized in that: The diameter of the positioning cylinder is larger than the diameter of the smooth cylinder and the external thread cylinder.

7. The calibration device for the Hall position signaler linear displacement test system according to claim 1, characterized in that: The movable stroke of the digital micrometer shall not be less than the measuring range of the displacement test system.

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