Manual linear module static calibrator

Abstract

A manual linear module static calibrator comprises a base, a lead screw is axially installed above the base through a lead screw bearing seat, and one end of the lead screw penetrates through the lead screw bearing seat and is fixedly provided with an adjusting rotating wheel; the outer surface of the lead screw is connected with a lead screw nut through threads, a test piece disc support is fixedly installed on the outer surface of the lead screw nut, a test piece disc is installed on the side face of the test piece disc support, a positioning screw is installed on the back face of the test piece disc, and the axis of the positioning screw is parallel to the axis of the lead screw. A high-precision dial indicator is fixedly installed on the dial indicator support, and the measuring end of the high-precision dial indicator corresponds to the end face of the positioning screw. A probe bracket is mounted at the end part above the base; a mounting opening of the probe bracket corresponds to the front surface of the test piece disc. The utility model overcomes the defects of the prior art, and can judge whether the data output by the eddy current sensor is normal according to the reading on the dial indicator so as to judge the quality and the precision of the eddy current sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a manual linear module static calibration instrument. Background Art

[0002] The eddy current sensor is a non-contact measurement sensor with superior performance. It uses the principle of induced eddy current. When a coil with high-frequency current is close to the metal being measured, the high-frequency electromagnetic field generated by the high-frequency current on the coil will generate an induced current on the metal surface, which is called eddy current in electromagnetics. The eddy current effect is related to the distance between the metals being measured and the conductivity, magnetic permeability, geometric shape and size of the coil, current frequency and other parameters.

[0003] As a detection sensor, there is bound to be a calibration problem. Usually, the calibration of eddy current sensors can be roughly divided into factory calibration and user calibration, and the calibration performed by users is usually periodic calibration.

[0004] However, due to the working characteristics of eddy current sensors, most users are unable to calibrate them on site and can only disassemble them and send them to special laboratories, instrument calibration rooms or sensor manufacturers for inspection and calibration. The inspection and calibration of sensors takes a long time, which is very time-consuming and laborious for some large units or users with multiple eddy current sensors installed. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a manual linear module static calibrator, which overcomes the shortcomings of the existing technology and has a reasonable design. It can judge whether the data output by the eddy current sensor is normal according to the reading on the dial indicator, so as to judge the quality and accuracy of the eddy current sensor.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A manual linear module static calibrator comprises a base, a screw is axially installed above the base through a screw bearing seat, one end of the screw passes through the screw bearing seat and is fixedly installed with an adjusting wheel; a screw nut is threadedly connected to the outer surface of the screw, a specimen disc holder is fixedly installed on the outer surface of the screw nut, a specimen disc is installed on the side of the specimen disc holder, a positioning screw is installed on the back of the specimen disc, the axis of the positioning screw is parallel to the axis of the screw, a micrometer holder is fixedly installed above the base, a high-precision micrometer is fixedly installed on the micrometer holder, and the measuring end of the high-precision micrometer corresponds to the end face of the positioning screw; a probe holder is installed at the upper end of the base, and the mounting port of the probe holder corresponds to the front side of the specimen disc.

[0008] Preferably, a slide seat is fixedly installed above the base, the axis of the slide seat is parallel to the axis of the screw rod, and the screw rod nut is slidably connected in the slide seat.

[0009] Preferably, limiting strips are provided on both sides of the screw nut, and the limiting strips are in sliding contact with the upper surface of the slide seat.

[0010] Preferably, the end of the screw rod is transmission-connected to the driving shaft of the adjusting wheel via a coupling.

[0011] Preferably, a through hole is provided in the middle of the specimen disc support, and the screw end of the positioning screw passes through the through hole and is threadedly connected to the specimen disc.

[0012] Preferably, a positioning block is provided on the back of the specimen tray, a slot is provided on the surface of the positioning block, and the positioning block is fixed to the side of the specimen tray bracket through the slot.

[0013] The utility model provides a manual linear module static calibration instrument. It has the following beneficial effects: by controlling the specimen plate bracket to move along the axial direction of the screw rod, the end face of the positioning screw rod is in conflict with the measuring end of the high-precision micrometer, so that the data output by the eddy current sensor can be judged according to the reading on the micrometer whether it is normal, so as to judge the quality and accuracy of the eddy current sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings required for describing the prior art are briefly introduced below.

[0015] Figure 1 A schematic diagram of the structure of the utility model;

[0016] Figure 2 A schematic diagram of the structure above the slide seat in the utility model;

[0017] Description of the numbers in the figure:

[0018] 1. Base; 2. Screw bearing seat; 3. Screw; 4. Adjusting wheel; 5. Screw nut; 6. Test piece disc bracket; 7. Test piece disc; 8. Positioning screw; 9. Micrometer bracket; 10. High-precision micrometer; 11. Probe bracket; 12. Slide; 13. Limiting strip; 14. Coupling; 15. Positioning block. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0020] Embodiment 1, as Figure 1-2As shown, a manual linear module static calibrator comprises a base 1, a screw 3 is axially installed on the top of the base 1 through a screw bearing seat 2, one end of the screw 3 passes through the screw bearing seat 2 and is fixedly installed with an adjusting wheel 4; a screw nut 5 is threadedly connected to the outer surface of the screw 3, a specimen disc holder 6 is fixedly installed on the outer surface of the screw nut 5, a specimen disc 7 is installed on the side of the specimen disc holder 6, a positioning screw 8 is installed on the back of the specimen disc 7, the axis of the positioning screw 8 is parallel to the axis of the screw 3, a micrometer bracket 9 is fixedly installed on the top of the base 1, a high-precision micrometer 10 is fixedly installed on the micrometer bracket 9, and the measuring end of the high-precision micrometer 10 corresponds to the end face of the positioning screw 8; a probe bracket 11 is installed on the upper end of the base 1, and the mounting port of the probe bracket 11 corresponds to the front side of the specimen disc 7.

[0021] Working principle:

[0022] When calibrating the eddy current sensor, first rotate the adjusting wheel 4 to drive the entire specimen disk bracket 6 to move along the axial direction of the screw rod 3, so that the end face of the positioning screw 8 conflicts with the measuring end of the high-precision micrometer 10, and then install the eddy current sensor on the probe bracket 11, and make the probe end face of the eddy current sensor fully contact with the front of the specimen disk 7, and then connect the corresponding signal connection line to ensure normal output; thus, it is possible to judge whether the data output by the eddy current sensor is normal based on the reading on the dial indicator, so as to judge the quality of the eddy current sensor or draw a characteristic curve.

[0023] Embodiment 2, as a further preferred embodiment of embodiment 1, a slide 12 is fixedly mounted on the base 1, the axis of the slide 12 is parallel to the axis of the screw 3, and the screw nut 5 is slidably connected in the slide 12. In this embodiment, limiting strips 13 are provided on both sides of the screw nut 5, and the limiting strips 13 are in sliding contact with the upper surface of the slide 12.

[0024] Therefore, the sliding seat 12 can be used to limit the moving direction of the screw nut 5, ensuring that the screw nut 5 can move more smoothly along the axis of the screw 3, and the limiting effect of the limiting strip 13 can be used to avoid the angular rotation deviation of the screw nut 5, thereby effectively ensuring the stability of the specimen disk bracket 6 when moving along the axial direction of the screw 3.

[0025] Embodiment 3, as a further preferred embodiment of embodiment 1, the end of the screw rod 3 is connected to the driving shaft of the adjusting wheel 4 through the coupling 14. The screw rod 3 and the adjusting wheel 4 are connected through the coupling 14, and the coupling 14 can effectively compensate for the offset problem between the screw rod 3 and the driving shaft of the adjusting wheel 4 due to inaccurate manufacturing and installation, deformation during operation, or thermal expansion.

[0026] Embodiment 4, as a further preferred embodiment of embodiment 1, a through hole is provided in the middle of the specimen tray support 6, and the screw end of the positioning screw 8 passes through the through hole and is threadedly connected to the specimen tray 7. In this embodiment, a positioning block 15 is provided on the back of the specimen tray 7, and a slot is provided on the surface of the positioning block 15, and the positioning block 15 is fixed to the side of the specimen tray support 6 through the slot.

[0027] When installing the specimen disc 7, the positioning block 15 on the back of the specimen disc 7 can be first fixed to the side of the specimen disc bracket 6 by snapping, and the threaded hole of the specimen disc 7 can be made to correspond to the through hole on the specimen disc bracket 6, and then the screw end of the positioning screw 8 can be passed through the through hole and connected to the specimen disc 7 by threading.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A manual linear module static calibration instrument, characterized in that: The invention comprises a base (1), a screw (3) is axially mounted on the top of the base (1) through a screw bearing seat (2), one end of the screw (3) passes through the screw bearing seat (2) and is fixedly mounted with an adjusting wheel (4); a screw nut (5) is threadedly connected to the outer surface of the screw (3), a specimen disc support (6) is fixedly mounted on the outer surface of the screw nut (5), a specimen disc (7) is mounted on the side of the specimen disc support (6), and a positioning screw is mounted on the back of the specimen disc (7). The base (1) is provided with a positioning screw (8), the axis of the positioning screw (8) is parallel to the axis of the lead screw (3), a micrometer bracket (9) is fixedly mounted above the base (1), a high-precision micrometer (10) is fixedly mounted on the micrometer bracket (9), and the measuring end of the high-precision micrometer (10) corresponds to the end face of the positioning screw (8); a probe bracket (11) is mounted at the upper end of the base (1), and the mounting opening of the probe bracket (11) corresponds to the front face of the specimen disk (7).

2. A manual linear module static calibration instrument according to claim 1, characterized in that: A slide seat (12) is fixedly mounted above the base (1), the axis of the slide seat (12) is parallel to the axis of the screw rod (3), and the screw rod nut (5) is slidably connected in the slide seat (12).

3. A manual linear module static calibration instrument according to claim 2, characterized in that: Limiting strips (13) are provided on both sides of the screw nut (5), and the limiting strips (13) are in sliding contact with the upper surface of the slide seat (12).

4. A manual linear module static calibration instrument according to claim 1, characterized in that: The end of the screw rod (3) is transmission-connected to the drive shaft of the adjusting wheel (4) via a coupling (14).

5. The manual linear module static calibration instrument according to claim 1, characterized in that: A through hole is provided in the middle of the specimen disc support (6), and the screw end of the positioning screw (8) passes through the through hole and is connected to the specimen disc (7) via a thread.

6. A manual linear module static calibration instrument according to claim 5, characterized in that: A positioning block (15) is arranged on the back of the specimen tray (7), a slot is provided on the surface of the positioning block (15), and the positioning block (15) is fixed to the side of the specimen tray bracket (6) through the slot.

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