CN111795646A - Calibration device for laser displacement sensor - Google Patents
Calibration device for laser displacement sensor Download PDFInfo
- Publication number
- CN111795646A CN111795646A CN202010664060.9A CN202010664060A CN111795646A CN 111795646 A CN111795646 A CN 111795646A CN 202010664060 A CN202010664060 A CN 202010664060A CN 111795646 A CN111795646 A CN 111795646A
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- plate
- laser
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- micrometer
- sliding
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a calibration device for a laser displacement sensor, which can conveniently realize the calibration of laser parameters and comprises a laser calibration plate and a micrometer gauge, wherein the micrometer gauge is arranged on a fixed plate, the laser calibration plate and the fixed plate are connected through an installation connecting block, a micrometer head mounting plate is arranged on the laser calibration plate, a micrometer is arranged on the micrometer head mounting plate, a sleeve and a screw rod on the micrometer gauge are penetrated through the micrometer head mounting plate together, the screw rod is connected with a balancing weight through a compression spring, a sliding assembly is arranged on the laser calibration plate and comprises a sliding rail, a sliding plate is arranged on the sliding rail through a sliding block, the sliding plate is connected with the screw rod through a follow-up block, a through groove is arranged on the laser calibration plate below the sliding plate, the upper part of a side sliding block in an inverted T shape is connected with the bottom surface of the sliding plate after penetrating through the through groove, and the length of the, optical glass is arranged on the bottom surface of the lower part of the side sliding block, and a measuring pin on the micrometer passes through the fixing plate and then is contacted with the end part of the optical glass.
Description
Technical Field
The invention relates to the technical field of laser calibration, in particular to a calibration device for a laser displacement sensor.
Background
The laser displacement sensor is often used for measuring the structural stability of a product (such as a touch pad of a computer) under a simulation working condition, but the requirement on the measurement precision is high and reaches up to 0.001mm, so that the parameter setting and calibration of the laser displacement sensor are needed, so that accurate data can be obtained, but when the laser displacement sensor is calibrated, all parameters of the laser displacement sensor are generally adjusted only by experience, and whether the laser displacement sensor is adjusted to a stable use state or not can not be defined, and the adjustment is difficult.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a calibration device for a laser displacement sensor, which can conveniently realize calibration of laser parameters.
Its technical scheme is such for laser displacement sensor's calibrating device places after being used for detecting the position of surveyed the product on special tool, and makes calibrating device's calibration side sets up its characterized in that with laser displacement sensor relatively: the calibration device comprises a laser calibration plate and a micrometer gauge, the micrometer gauge is arranged on a fixed plate, the laser calibration plate and the fixed plate are connected through a mounting connecting block, a micrometer head mounting plate is arranged on the laser calibration plate, a micrometer is arranged on the micrometer head mounting plate, a sleeve on the micrometer gauge and a screw rod connected with the sleeve penetrate through the micrometer head mounting plate, the end part of the screw rod is connected with a balancing weight arranged on the laser calibration plate through a compression spring, a sliding assembly is arranged on the laser calibration plate and comprises a sliding rail, the sliding rail is provided with a sliding plate through a sliding block, the sliding plate is connected with the screw rod through a follow-up block, a through groove is arranged on the laser calibration plate below the sliding plate, and the upper part of a side sliding block in an inverted T shape penetrates through the through groove and then is connected with the bottom surface of the sliding plate, the length of the through groove is larger than that of the upper portion of the side sliding block and smaller than that of the lower portion of the side sliding block, optical glass is installed on the bottom face of the lower portion of the side sliding block, and a measuring needle on the ten-thousandth micrometer penetrates through the fixing plate and then is in contact with the end portion of the optical glass.
It is further characterized in that:
a counterweight mounting plate is fixed on the laser calibration plate, the counterweight block is connected with the counterweight mounting plate, the screw rod and the compression spring on the screw rod penetrate through the counterweight mounting plate together, and the compression spring is connected with the counterweight block;
two micrometers are arranged and symmetrically arranged at two ends of the dividing head mounting plate;
the two groups of sliding assemblies are symmetrically arranged at two ends of the laser calibration plate, the sliding plates at the two ends are connected with the screw rods at the corresponding sides of the sliding plates through the follow-up blocks, and the laser calibration plates at the two ends of the sliding rail are provided with sliding rail limiting blocks;
the number of the ten-thousandth gauges is two, the ten-thousandth gauges are symmetrically arranged at two ends of the fixing plate, a concave part is arranged in the middle of the fixing plate, one end of the mounting connecting block is fixed at the position of the concave part, and the other end of the mounting connecting block is fixed on the laser calibration plate;
corresponding grooves are formed in the lower portion of the side sliding block and two ends of the laser calibration plate corresponding to the side sliding block, and the measuring needle penetrates through the fixing plate and then is in contact with the optical glass through the grooves;
the bottom surface of the lower part of the side sliding block is provided with an assembly groove, and the optical glass is arranged in the assembly groove.
The calibration device for the laser displacement sensor has the advantages that after the calibration device for the laser displacement sensor is placed on a special jig and used for detecting the position of a product to be detected, the calibration side of the calibration device is arranged opposite to the laser displacement sensor, and then a knob of a micrometer is adjusted until the precision digit of the reading of a ten-thousandth meter and the reading of the laser displacement sensor is the same and stable, namely a more accurate use parameter is found, so that the laser parameter calibration of the laser displacement sensor is realized, the adjustment is convenient and fast, and the calibration device has better economic use value.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the assembled top view structure of the present invention and a special fixture;
FIG. 3 is a schematic view of an exploded structure of the present invention;
FIG. 4 is a schematic perspective view of a side slider according to the present invention;
FIG. 5 is a schematic view of the structure of the side slider in the present invention.
Detailed Description
As shown in fig. 1 to 5, the calibration device for a laser displacement sensor of the present invention is placed on a special fixture 1 for detecting the position of a product to be tested, and the calibration side (the side close to a counterweight 12) of the calibration device is arranged opposite to a laser displacement sensor 2, the special fixture 1 can be arranged according to the needs of a manufacturer for detecting the product to be tested, the calibration device in the present invention only needs to be placed on the special fixture 1 for detecting the position of the product to be tested, and no specific requirements are required for the special fixture 1; the calibration device comprises a laser calibration plate 3 and a micrometer gauge 4, namely the laser calibration plate 3 is placed on a special jig 1 and used for detecting the position of a detected product, the micrometer gauge 4 is arranged on a fixed plate 5, the laser calibration plate 3 and the fixed plate 5 are connected through an installation connecting block 6, a micrometer head mounting plate 7 is arranged on the laser calibration plate 3, a micrometer 8 is arranged on the micrometer head mounting plate 7, a sleeve 9 on the micrometer 8 and a screw 10 connected with the sleeve 9 penetrate through the micrometer head mounting plate 7 together, the end part of the screw 10 is connected with a balancing weight 12 arranged on the laser calibration plate 3 through a compression spring 11, a sliding assembly is arranged on the laser calibration plate 3 and comprises a sliding rail 13, a sliding plate 15 is arranged on the sliding rail 13 through a sliding block 14, the sliding plate 15 is connected with the screw 10 through a follower block 16, a through groove 17 is arranged on the laser calibration plate 3 positioned below the sliding plate 15, the upper part of an inverted T-shaped side sliding block 18 penetrates through the through, the length of the through groove 17 is greater than the length of the upper part of the side sliding block 18 and less than the length of the lower part of the side sliding block 18, the bottom surface of the lower part of the side sliding block 18 is provided with the optical glass 19, the sliding plate 15, the side sliding block 18 and the optical glass 19 can be driven to slide together by rotating the knob 20 on the micrometer 8, and the measuring needle 21 on the micrometer 4 penetrates through the fixing plate 5 and then contacts with the end part of the optical glass 19; the optical glass 19 can simulate the actual working conditions (position, material, surface roughness and the like) of the tested product.
A counterweight mounting plate 22 is fixed on the laser calibration plate 3, the counterweight block 12 is connected with the counterweight mounting plate 22, the screw 10 and the compression spring 11 thereon penetrate through the counterweight mounting plate 22, and the compression spring 11 is connected with the counterweight block 12; two micrometers 8 are arranged and symmetrically arranged at two ends of the micrometer head mounting plate 7; the two groups of sliding assemblies are symmetrically arranged at two ends of the laser calibration plate 3, the sliding plates 15 at two ends are connected with the screw rods 10 at corresponding sides through the follow-up blocks 16, and the laser calibration plates 3 at two ends of the sliding rail 13 are provided with sliding rail limiting blocks 23; the ten-thousandth meter 4 is provided with two parts which are symmetrically arranged at two ends of the fixing plate 5, a concave part 24 is arranged in the middle of the fixing plate 5, one end of the mounting connecting block 6 is fixed at the position of the concave part 24, and the other end of the mounting connecting block is fixed on the laser calibration plate 3; corresponding grooves 25 are formed in the lower portion of the side sliding block 18 and two ends of the laser calibration plate 3 corresponding to the side sliding block, and the measuring needle 21 penetrates through the fixing plate 5 and then contacts the optical glass 19 through the grooves 25 in the lower portion of the side sliding block 18; the bottom surface of the lower part of the side slider 18 is provided with an assembling groove 26, and the optical glass 19 is arranged in the assembling groove 26.
The calibration device simulates the detection position of a product to be detected, the product to be detected is generally placed on a special jig 1, and the calibration device also simulates the placement state of the product to be detected when the calibration device is used for calibration, so that the calibration device is directly placed at the actual working position for detecting the product to be detected, and the laser displacement sensor 2 is calibrated through the ten-thousandth meter 4, so that a more accurate use parameter is found, the adjustment is convenient, and the flow can be standardized.
The calibration method specifically comprises the following steps:
(1) placing the calibration device on the special jig 1 for detecting the product to be detected, and opening the laser displacement sensor 2 and the ten-thousandth meter 4;
(2) after the readings of the myriameter 4 and the laser displacement sensor 2 are set to appropriate values by adjusting a knob 20 of the micrometer 8, the myriameter 4 and the laser displacement sensor 2 are simultaneously set to zero, and then parameters of the laser displacement sensor 2 are set;
(3) repeating the step (2) until the accuracy digit of the readings of the ten-thousandth meter 4 and the laser displacement sensor 2 is the same and stable;
(4) adjusting a knob 20 of the micrometer 8, and comparing whether the precision digit numbers of the readings of the myriameter 4 and the laser displacement sensor 2 are the same and stable or not after the middle value of the range of the set measuring distance is reached;
(5) adjusting a knob 20 of the micrometer 8, and comparing whether the precision digit numbers of the readings of the myriameter 4 and the laser displacement sensor 2 are the same and stable or not after the maximum value of the range of the set measuring distance is reached;
(6) and if the accuracy digit numbers of the readings of the ten-thousandth meter 4 and the laser displacement sensor 2 are the same and stable, finishing the calibration, otherwise, repeating the steps (2) to (5).
The definition that the precision digits of the readings of the decimeter 4 and the laser displacement sensor 2 are the same and stable is that the readings of the two are kept unchanged after a small point, the readings of the two are the same, and the precision reaches 0.001 mm.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A calibrating device for laser displacement sensor places after the position that is used for detecting the product of being surveyed on special tool, and makes calibrating device's calibration side sets up its characterized in that with laser displacement sensor relatively: the calibration device comprises a laser calibration plate and a micrometer gauge, the micrometer gauge is arranged on a fixed plate, the laser calibration plate and the fixed plate are connected through a mounting connecting block, a micrometer head mounting plate is arranged on the laser calibration plate, a micrometer is arranged on the micrometer head mounting plate, a sleeve on the micrometer gauge and a screw rod connected with the sleeve penetrate through the micrometer head mounting plate, the end part of the screw rod is connected with a balancing weight arranged on the laser calibration plate through a compression spring, a sliding assembly is arranged on the laser calibration plate and comprises a sliding rail, the sliding rail is provided with a sliding plate through a sliding block, the sliding plate is connected with the screw rod through a follow-up block, a through groove is arranged on the laser calibration plate below the sliding plate, and the upper part of a side sliding block in an inverted T shape penetrates through the through groove and then is connected with the bottom surface of the sliding plate, the length of the through groove is larger than that of the upper portion of the side sliding block and smaller than that of the lower portion of the side sliding block, optical glass is installed on the bottom face of the lower portion of the side sliding block, and a measuring needle on the ten-thousandth micrometer penetrates through the fixing plate and then is in contact with the end portion of the optical glass.
2. The calibration device for a laser displacement sensor according to claim 1, wherein: the laser calibration plate is fixed with a counterweight mounting plate, the counterweight block is connected with the counterweight mounting plate, the screw rod and the compression spring on the screw rod run through the counterweight mounting plate together, and the compression spring is connected with the counterweight block.
3. The calibration device for a laser displacement sensor according to claim 1, wherein: the micrometer is provided with two, and the symmetry install in divide first mounting panel both ends.
4. The calibration device for a laser displacement sensor according to claim 1, wherein: the sliding assemblies are arranged in two groups and symmetrically arranged at two ends of the laser calibration plate, the sliding plates at the two ends are connected with the screw rods on the corresponding sides of the follow-up blocks, and the sliding rail limiting blocks are arranged on the laser calibration plate at two ends of the sliding rail.
5. The calibration device for a laser displacement sensor according to claim 1, wherein: the laser calibration device is characterized in that the number of the ten-thousandth gauges is two, the ten-thousandth gauges are symmetrically arranged at two ends of the fixing plate, a concave part is arranged in the middle of the fixing plate, one end of the mounting connecting block is fixed at the position of the concave part, and the other end of the mounting connecting block is fixed on the laser calibration plate.
6. The calibration device for a laser displacement sensor according to claim 1, wherein: corresponding grooves are formed in the lower portion of the side sliding block and the two ends of the laser calibration plate corresponding to the side sliding block, and the measuring needle penetrates through the fixing plate and then is in contact with the optical glass through the grooves.
7. The calibration device for a laser displacement sensor according to claim 1, wherein: the bottom surface of the lower part of the side sliding block is provided with an assembly groove, and the optical glass is arranged in the assembly groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010664060.9A CN111795646A (en) | 2020-07-10 | 2020-07-10 | Calibration device for laser displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010664060.9A CN111795646A (en) | 2020-07-10 | 2020-07-10 | Calibration device for laser displacement sensor |
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| Publication Number | Publication Date |
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| CN111795646A true CN111795646A (en) | 2020-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010664060.9A Pending CN111795646A (en) | 2020-07-10 | 2020-07-10 | Calibration device for laser displacement sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780687A (en) * | 2020-08-05 | 2020-10-16 | 中国铁道科学研究院集团有限公司 | Calibrating device of profile detection system and working method thereof |
-
2020
- 2020-07-10 CN CN202010664060.9A patent/CN111795646A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780687A (en) * | 2020-08-05 | 2020-10-16 | 中国铁道科学研究院集团有限公司 | Calibrating device of profile detection system and working method thereof |
| CN111780687B (en) * | 2020-08-05 | 2022-02-22 | 中国铁道科学研究院集团有限公司 | Calibrating device of profile detection system and working method thereof |
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Effective date of registration: 20210420 Address after: 215000 unit g1-305, artificial intelligence Industrial Park, 88 Jinjihu Avenue, Suzhou Industrial Park, Suzhou area, China (Jiangsu) pilot Free Trade Zone, Suzhou City, Jiangsu Province Applicant after: SUZHOU WEIDAZHI ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 215000 room 307, floor 3, building 1, Zhihui Yunji Industrial Park, No. 99, Fengnan Road, Weitang Town, Xiangcheng District, Suzhou City, Jiangsu Province Applicant before: SUZHOU WEILUODA ELECTRONIC TECHNOLOGY Co.,Ltd. |
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