CN220187677U - Sensor calibration device - Google Patents
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- CN220187677U CN220187677U CN202321693593.5U CN202321693593U CN220187677U CN 220187677 U CN220187677 U CN 220187677U CN 202321693593 U CN202321693593 U CN 202321693593U CN 220187677 U CN220187677 U CN 220187677U
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- 238000006073 displacement reaction Methods 0.000 abstract description 36
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides a sensor calibration device which comprises a base, a linear driving piece, a first sliding piece, a supporting plate, a measuring head bracket, a sensor sliding block and a grating ruler, wherein the linear driving piece is arranged on the base; the linear driving piece is arranged on the base along the first horizontal direction; the first sliding piece is arranged at the output end of the linear driving piece; the support plate is arranged in the base along the first horizontal direction and penetrates through the first sliding piece; the measuring head support is connected to the supporting plate in a sliding manner along the first horizontal direction, and a measuring head is arranged on the measuring head support; the sensor sliding block is fixed on the first sliding piece and positioned at one side of the measuring head, and a plurality of positioning holes for clamping a plurality of sensors are formed in the sensor sliding block; the grating ruler is arranged on the supporting plate along the first horizontal direction, and a grating reading head sliding along the grating ruler is arranged on the measuring head bracket; the utility model eliminates the deformation of the clamp caused by the tensile force, and the true displacement of the displacement sensor is more accurate.
Description
Technical Field
The utility model relates to a sensor calibration device, in particular to a device capable of simultaneously calibrating a plurality of displacement sensors.
Background
As a very common geometric industrial sensor, a linear displacement sensor is widely used in various industrial occasions.
In the actual calibration operation process, we find that when the displacement sensor is mounted on the fixture of the calibration device, the fixture of the automatic calibration device is started from rest at the starting point and the end point of the calibration, because the tension of some displacement sensors is larger (such as the vibrating wire type displacement sensor), the displacement of the displacement calibration device is usually generated, the measuring rod of the displacement sensor does not synchronously generate synchronous displacement, and only the fixture of the displacement calibration device generates tiny deformation due to the tension, so that the calibration data of the displacement sensor is not true at the starting point and the end point of the calibration, and the calibration result is not qualified.
When a plurality of displacement sensors are calibrated at the same time, the displacement sensors are clamped on the clamp, larger pulling force is generated through accumulation at the calibration starting point and the calibration end point, so that the clamp of the displacement calibration device is deformed more, the calibration result is worse, and the real precision of the displacement sensors cannot be measured.
Disclosure of Invention
The utility model aims to overcome the existing defects and provide a sensor calibration device, wherein a measuring head for measurement and a sensor sliding block are arranged in a split mode, and even if a clamp is deformed due to tensile force, the actual displacement of a sensor can be accurately measured, so that the calibration precision is improved.
In order to solve the technical problems, the utility model provides the following technical scheme:
the utility model relates to a sensor calibration device, which comprises
A base;
the linear driving piece is arranged on the base along the first horizontal direction;
the first sliding piece is arranged at the output end of the linear driving piece and can move along a first linear;
the support plate is arranged in the base along the first horizontal direction and penetrates through the first sliding piece;
the measuring head support is connected to the supporting plate in a sliding manner along the first horizontal direction, and a measuring head is arranged on the measuring head support;
the sensor sliding block is fixed on the first sliding piece and positioned on one side of the measuring head, a plurality of positioning holes for clamping a plurality of sensors are formed in the sensor sliding block, the plurality of positioning holes are arranged at intervals along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction;
and
the grating ruler is arranged on the supporting plate along the first horizontal direction, and a grating reading head sliding along the grating ruler is arranged on the measuring head bracket;
when the linear driving piece can drive the first sliding piece to move along the first horizontal direction, the sensor sliding block is contacted with the measuring head and pushes the measuring head support to move along the first horizontal direction.
Further, the device further comprises an elastic pull rope, wherein the elastic pull rope is arranged on the supporting plate, and one end of the elastic pull rope penetrates through the first sliding piece to be connected with the measuring head bracket.
Further, the base comprises a base bottom surface, a base first side surface and a base second side surface, wherein the base first side surface and the base second side surface are respectively positioned at two ends of the base bottom surface in the first direction, and the base first side surface and the base second side surface are respectively vertical to the base bottom surface.
Further, the top surface of the first side surface of the base is provided with a sensor clamp, and a plurality of limiting holes corresponding to the positioning holes one by one are arranged on the sensor clamp at intervals.
Further, the linear driving piece comprises a stepping motor and a ball screw assembly, the ball screw assembly extends along a first direction, one end of the ball screw assembly is rotationally connected to the first side face of the base, the other end of the ball screw assembly penetrates through the second side face of the base, the output end of the stepping motor is connected to the other end of the ball screw assembly through a coupler, the coupler is fixed to the second side face of the base, and the first sliding piece is connected to the output end of the ball screw assembly.
Further, a first sliding rail is arranged on the bottom surface of the base along a first direction, a first sliding block is arranged on the first sliding rail in a sliding mode, and the first sliding block is fixed on the first sliding piece.
Further, a first connecting rod is further arranged between the first side surface of the base and the second side surface of the base, the first connecting rod extends along the first direction, and the first connecting rod penetrates through the first sliding piece.
Further, a second connecting rod is further arranged between the first side face of the base and the second side face of the base, and the second connecting rod is located on one side of the sensor clamp.
Further, a second sliding rail is arranged on the supporting plate along the first direction, a second sliding block is arranged on the second sliding rail in a sliding mode, and the second sliding block is fixed on the measuring head support.
The beneficial effects are that:
according to the utility model, the measuring head for measuring the displacement of the sensor is arranged on the supporting plate, so that the power of the linear driving piece is only output to the sensor sliding block, and the linear driving piece only provides displacement action for the sensor without precision; the measuring head for measuring displacement and the lateral head of the displacement sensor synchronously move after being contacted, so that the deformation of the clamp caused by tensile force is eliminated at the starting point and the end point of calibration, and the actual displacement of the measured displacement sensor is more accurate.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a top view of the present utility model;
FIG. 3 is a view in the direction A-A of FIG. 2;
fig. 4 is a front view of the present utility model.
In the figure: 10-base, 20-linear driving piece, 30-first slider, 40-backup pad, 50-measuring head support, 60-sensor sliding block, 70-grating ruler, 80-elastic pull rope, 110-base bottom surface, 120-base first side, 130-base second side, 140-sensor clamp, 150-first slide rail, 160-first slide block, 170-first connecting rod, 180-second connecting rod, 210-stepper motor, 220-ball screw assembly, 410-second slide rail, 420-second slide block, 510-measuring head, 710-grating reading head.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
As shown in fig. 1-4, the present embodiment proposes a sensor calibration device, which includes a base 10, a linear driving member 20, a first sliding member 30, a supporting plate 40, a measuring head bracket 50, a sensor sliding block 60, and a grating ruler 70; the linear driving member 20 is disposed on the base in a first horizontal direction; the first slider 30 is disposed at an output end of the linear driving member and is movable along a first line; the support plate 40 is disposed in the base 10 along the first horizontal direction, and the support plate 40 penetrates the first slider 30; the measuring head bracket 50 is slidably connected to the supporting plate 40 along the first horizontal direction, and the measuring head 510 is arranged on the measuring head bracket 50; the sensor sliding block 60 is fixed on the first sliding member 30 and is located at one side of the measuring head 510, the sensor sliding block 60 is provided with a plurality of positioning holes for clamping a plurality of sensors, and the plurality of positioning holes are arranged at intervals along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction; the grating scale 70 is arranged on the supporting plate 40 along the first horizontal direction, and the grating reading head 710 sliding along the grating scale 70 is arranged on the measuring head bracket 50; when the linear driving member 20 is capable of driving the first slider 30 to move in the first horizontal direction, the sensor slider 60 contacts the measuring head 510 and pushes the measuring head holder 50 to move in the first horizontal direction.
Specifically, the first horizontal direction is the length direction of the base 10, the second horizontal direction is the width direction of the base 10, the sensor to be calibrated is a similar vibrating wire type displacement sensor, and the measuring head of the sensor is fixed in the positioning hole of the sensor sliding block 60 through a hexagonal screw; when the linear driving member 20 drives the sliding member 30 to move rightwards, the measuring head end at the right end of the sensor contacts with the measuring head support 50 on the measuring head support 50, so that the measuring head support 50 moves rightwards synchronously with the sensor, and the grating reading head 710 slides along the grating ruler to measure the positions of the starting point and the end point of the sensor, so that the linear driving member 20 only provides displacement action, the supporting plate 40 only provides calibration action, the purposes of displacement and calibration separation are achieved, the deformation and mechanical errors of the automatic calibration are eliminated, a plurality of displacement sensors can be automatically calibrated at one time, and the production energy requirement of mass production of a displacement sensor manufacturer is met.
Specifically, the first slider 30 has a frame-shaped structure, and the front and rear sides thereof bypass the support plate 40 and do not contact the support plate 40, thereby avoiding motion interference.
In the present utility model, an elastic string 80 is further included, the elastic string 80 is disposed on the support plate 40, and one end of the elastic string 80 is connected to the measuring head bracket 50 through the first slider 30.
Specifically, the measuring head bracket 50 is pulled by the elastic pull rope 80 in real time, and the pulling force of the elastic pull rope is about 500 g, so that the elastic pull rope can be firmly nailed on the measuring head of the sensor to be measured, and once the linear driving piece 20 drives the first sliding piece 30 to generate displacement, the measuring head 510 can directly measure the displacement change of the sensor; and when the head holder 50 moves rightward, the elastic force of the elastic pull rope 80 increases, and when the head holder 50 moves leftward, the elastic pull rope 80 facilitates the resetting of the head holder 50.
The specific structure of the base 10 is as follows: the base 10 includes a base bottom surface 110, a base first side surface 120 and a base second side surface 130, wherein the base first side surface 120 and the base second side surface 130 are respectively located at two ends of the base bottom surface 110 in a first direction, and the base first side surface 120 and the base second side surface 130 are respectively perpendicular to the base bottom surface 110.
In order to further limit the motion track of the sensor and ensure the accuracy of the sensor displacement measurement, the top surface of the first side surface 120 of the base is provided with a sensor clamp 140, and a plurality of limiting holes corresponding to the positioning holes one by one are arranged on the sensor clamp 140 at intervals.
As an embodiment of the present utility model, the linear driving member 20 has a specific structure: the linear driving member 20 includes a stepper motor 210 and a ball screw assembly 220, the ball screw assembly 220 extends along a first direction, one end of the ball screw assembly 220 is rotatably connected to the first side 120 of the base, the other end of the ball screw assembly 220 penetrates through the second side 130 of the base, an output end of the stepper motor 210 is connected to the other end of the ball screw assembly 220 through a coupling, the coupling is fixed on the second side 130 of the base, and the first sliding member 30 is connected to the output end of the ball screw assembly 220.
In order to further improve the stability of the movement of the first slider 160 along the first horizontal direction and improve the calibration accuracy, a first sliding rail 150 is disposed on the bottom surface 110 of the base along the first direction, a first slider 160 is slidably disposed on the first sliding rail 150, and the first slider 160 is fixed on the first slider 30.
Specifically, the number of the first sliding rails 150 is two, and the two first sliding blocks 160 are respectively located at the bottom of the first sliding member 30 and are respectively located at the front side and the rear side of the ball screw assembly.
In order to further improve the accuracy of the movement of the first slider 160 along the first horizontal direction, a first connecting rod 170 is further disposed between the first base side 120 and the second base side 130, the first connecting rod 170 extends along the first direction, and the first connecting rod 170 penetrates through the first slider 30; specifically, the number of the first connecting rods 170 is two, which correspond to the upper parts of the two first sliding rails 150, and the first sliding member 30 is provided with a circular hole through which the first connecting rods 170 penetrate.
In order to further improve the structural stability of the base 10, a second connecting rod 180 is further disposed between the base first side 120 and the base second side 130, and the second connecting rod 180 is located at one side of the sensor fixture 140.
Specifically, the number of the second connecting rods 180 is two, and they are respectively located at the front and rear sides of the first slider 30.
In order to realize the sliding connection between the measuring head bracket 50 and the supporting plate 40, a second sliding rail 410 is arranged on the supporting plate 40 along the first direction, a second sliding block 420 is arranged on the second sliding rail 410 in a sliding manner, and the second sliding block 420 is fixed on the measuring head bracket 50.
Specifically, the second slide rail 410 is located at the rear side of the grating scale 70.
In the utility model, the stepping motor, the measuring head and the grating reading head are respectively connected with a control system, and automatic calibration measurement is realized under the control of automatic calibration software; when calibrating, after the displacement sensor to be measured is clamped, the type of the sensor to be measured is selected, and the measurement can be started by setting the information such as the measurement range, the calibration step distance and the like of the sensor; during measurement, the stepping motor drives the sensor to move for set displacement, the grating reading head reads the displacement of the measuring head at the starting point and the end point, and the automatic calibration software automatically performs calibration according to the calibration method of the calibration standard of the JJF 1305-2011 linear displacement sensor.
Because the control process of the control system and the running process of the software belong to the prior art, the description is omitted here.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. A sensor calibration device, characterized by: comprising
A base (10);
a linear driving member (20) disposed on the base in a first horizontal direction;
a first slider (30) provided at an output end of the linear driving member and movable along a first linear line;
a support plate (40) arranged in the base (10) along a first horizontal direction, and the support plate (40) penetrates through the first sliding piece (30);
a measuring head bracket (50) which is connected with the supporting plate (40) in a sliding way along a first horizontal direction, wherein a measuring head (510) is arranged on the measuring head bracket (50);
the sensor sliding block (60), the sensor sliding block (60) is fixed on the first sliding piece (30) and is positioned on one side of the measuring head (510), a plurality of positioning holes for clamping a plurality of sensors are formed in the sensor sliding block (60), the plurality of positioning holes are arranged at intervals along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction;
and
the grating ruler (70) is arranged on the supporting plate (40) along the first horizontal direction, and a grating reading head (710) sliding along the grating ruler (70) is arranged on the measuring head bracket (50);
when the linear driving member (20) can drive the first sliding member (30) to move along the first horizontal direction, the sensor sliding block (60) is contacted with the measuring head (510) and pushes the measuring head bracket (50) to move along the first horizontal direction.
2. The sensor calibration device of claim 1, wherein: the device further comprises an elastic pull rope (80), wherein the elastic pull rope (80) is arranged on the supporting plate (40), and one end of the elastic pull rope (80) penetrates through the first sliding piece (30) to be connected with the measuring head bracket (50).
3. The sensor calibration device of claim 2, wherein: the base (10) comprises a base bottom surface (110), a base first side surface (120) and a base second side surface (130), wherein the base first side surface (120) and the base second side surface (130) are respectively located at two ends of the base bottom surface (110) in the first direction, and the base first side surface (120) and the base second side surface (130) are respectively perpendicular to the base bottom surface (110).
4. A sensor calibration device according to claim 3, wherein: the top surface of the first side surface (120) of the base is provided with a sensor clamp (140), and a plurality of limiting holes corresponding to the positioning holes one by one are arranged on the sensor clamp (140) at intervals.
5. A sensor calibration device according to claim 3, wherein: the linear driving piece (20) comprises a stepping motor (210) and a ball screw assembly (220), the ball screw assembly (220) extends along a first direction, one end of the ball screw assembly (220) is rotationally connected to the first side face (120) of the base, the other end of the ball screw assembly (220) penetrates through the second side face (130) of the base, the output end of the stepping motor (210) is connected to the other end of the ball screw assembly (220) through a coupler, the coupler is fixed to the second side face (130) of the base, and the first sliding piece (30) is connected to the output end of the ball screw assembly (220).
6. The sensor calibration device of claim 5, wherein: the base bottom surface (110) is provided with a first sliding rail (150) along a first direction, the first sliding rail (150) is provided with a first sliding block (160) in a sliding mode, and the first sliding block (160) is fixed on the first sliding piece (30).
7. A sensor calibration device according to claim 3, wherein: a first connecting rod (170) is further arranged between the first side surface (120) of the base and the second side surface (130) of the base, the first connecting rod (170) extends along the first direction, and the first connecting rod (170) penetrates through the first sliding piece (30).
8. The sensor calibration device of claim 4, wherein: a second connecting rod (180) is further arranged between the first side face (120) of the base and the second side face (130) of the base, and the second connecting rod (180) is located on one side of the sensor clamp (140).
9. The sensor calibration device of claim 2, wherein: the support plate (40) is provided with a second sliding rail (410) along a first direction, the second sliding rail (410) is provided with a second sliding block (420) in a sliding mode, and the second sliding block (420) is fixed on the measuring head support (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321693593.5U CN220187677U (en) | 2023-06-30 | 2023-06-30 | Sensor calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321693593.5U CN220187677U (en) | 2023-06-30 | 2023-06-30 | Sensor calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220187677U true CN220187677U (en) | 2023-12-15 |
Family
ID=89109671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321693593.5U Active CN220187677U (en) | 2023-06-30 | 2023-06-30 | Sensor calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220187677U (en) |
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2023
- 2023-06-30 CN CN202321693593.5U patent/CN220187677U/en active Active
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