CN111623709B - Image measuring instrument capable of automatically adjusting position of sample to be measured and measuring method - Google Patents
Image measuring instrument capable of automatically adjusting position of sample to be measured and measuring method Download PDFInfo
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- CN111623709B CN111623709B CN202010698119.6A CN202010698119A CN111623709B CN 111623709 B CN111623709 B CN 111623709B CN 202010698119 A CN202010698119 A CN 202010698119A CN 111623709 B CN111623709 B CN 111623709B
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- 239000011521 glass Substances 0.000 claims description 10
- 238000005259 measurement Methods 0.000 abstract description 17
- 238000001514 detection method Methods 0.000 abstract description 8
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000005286 illumination Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 241001156002 Anthonomus pomorum Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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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
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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Abstract
The invention discloses an image measuring instrument capable of automatically adjusting the position of a sample to be measured and a measuring method, comprising an XY axis control assembly, a Z axis control assembly, a large-visual-field lens and a high-definition camera, wherein a first screw motor of the Z axis control assembly is arranged on a supporting seat, and a first guide block is in threaded connection with the first screw motor and is provided with a supporting block; the base and the supporting seat of XY axle control assembly fixed connection, second lead screw motor and base connection, the intermediate seat passes through second guide block and second lead screw motor to be connected, and the third lead screw motor is connected with the intermediate seat, and the footstock passes through third guide block and third lead screw motor to be connected, and big visual field scope camera lens is installed on first guide block, high definition digtal camera is installed on the supporting block. The information of the sample to be detected is obtained through the large-visual-field lens and the high-definition camera, the motors are adjusted, the sample to be detected is automatically moved, then the shot is taken, the size measurement is carried out, and the detection efficiency of the sample can be improved.
Description
Technical Field
The invention relates to the field of measuring instruments, in particular to an image measuring instrument capable of automatically adjusting the position of a sample to be measured and a measuring method.
Background
In the machining process of the mechanical parts, whether the machined parts meet the standard or not and whether deviation exists between the machined parts and the design is the most critical step before the machined parts are put into use. For the detection of the component standard, the traditional measuring means comprise manual measuring modes such as calipers, micrometers and the like, but the mode can only simply measure the simple dimensions such as length, width, height, inner diameter, outer diameter, depth and the like manually, and the information such as hole spacing, hole position and the like is difficult to measure.
The modern tool microscope, the measuring tool such as the image measuring instrument, when measuring and using, in order to observe the sample that awaits measuring clearly, need have higher magnification, will lead to the visual field scope to be little like this, need the manual adjustment sample that awaits measuring to the visual field scope center of camera lens during measuring, detection efficiency is low, and can't carry out the detection in batches. When detecting different samples, because of the error of sight alignment, the focal length is required to be frequently adjusted during measurement, so that the detection efficiency is low, and the detection means cannot meet the measurement requirements and the measurement efficiency of machining of mechanical parts as a whole.
Disclosure of Invention
The invention aims to provide an image measuring instrument and a measuring method capable of automatically adjusting the position of a sample to be measured, and aims to solve the problem that the measuring efficiency is reduced due to the fact that the existing measuring instrument needs to manually adjust the position of the sample.
In order to achieve the above purpose, the invention provides an image measuring instrument capable of automatically adjusting the position of a sample to be measured, which comprises an XY axis control assembly, a Z axis control assembly, a large-field-of-view lens, a high-definition camera and a motor controller, wherein the Z axis control assembly comprises a supporting seat, a first screw motor, a first guide block and a supporting block, the first screw motor is fixedly connected with the supporting seat and is positioned at one side of the supporting seat, the first guide block is in threaded connection with a screw rod of the first screw motor and is in sliding connection with the supporting seat, and the supporting block is fixedly connected with the first guide block and is positioned at one side of the first guide block; the XY axle control assembly includes base, centre piece, footstock, second lead screw motor, third lead screw motor, second guide block, third guide block and transparent glass, the base with supporting seat fixed connection, and be located one side of first guide block, the second lead screw motor with base fixed connection, and be located one side of base, the centre piece passes through the second guide block with the lead screw threaded connection of second lead screw motor, and with base sliding connection, the third lead screw motor with centre piece fixed connection, and be located one side of centre piece, the footstock passes through the third guide block with lead screw threaded connection of third lead screw motor, and with centre piece sliding connection, and be located the centre piece is kept away from one side of base, transparent glass with footstock fixed connection, and pass the footstock, the scope of vision camera lens with first guide block fixed connection, and be located one side that the first guide block is close to the motor, and be located one side that the footstock is close to the motor, and be located one side that the supporting seat is close to the first lead screw motor, the first camera controller with one side is located.
The Z-axis control assembly further comprises an anti-slip pad, wherein the anti-slip pad is fixedly connected with the supporting seat and is located on one side, far away from the base, of the supporting seat.
The Z-axis control assembly further comprises a limiting piece, wherein the limiting piece is fixedly connected with the supporting seat and is positioned on one side, close to the first guide block, of the supporting seat.
The high-definition camera comprises a telecentric lens and a CCD camera, wherein the telecentric lens is fixedly connected with the supporting block and is positioned on one side of the supporting block, which is close to the top seat, and the CCD camera is fixedly connected with the telecentric lens and is positioned on one side of the telecentric lens, which is far away from the top seat.
The Z-axis control assembly further comprises a bottom illuminator which is fixedly connected with the supporting seat and located between the base and the supporting seat.
The Z-axis control assembly further comprises a top illuminator which is fixedly connected with the supporting block and is located on one side, close to the top seat, of the supporting block.
In another aspect, the present invention provides an image measurement method capable of automatically adjusting a position of a sample to be measured, including:
placing a sample to be tested on a top seat;
acquiring first image data in a field of view in real time through a large-field-of-view lens;
establishing a Cartesian coordinate system in a view field based on the first image data, extracting characteristic values of a sample to be detected, and calculating current coordinates of the sample to be detected;
Based on the current coordinates, moving the second screw motor and the third screw motor, and moving the object to be detected to a field of view of the high-definition camera;
acquiring second image data in a view field in real time based on the high-definition camera;
Moving the second screw motor and the third screw motor based on the Cartesian coordinate system and the second image data to enable the sample to be detected to be positioned at the center of the view field range;
Acquiring the ambiguity of a sample to be detected in an image, and controlling a first screw motor to adjust the height of a high-definition camera according to the ambiguity index of the sample to be detected so as to enable imaging to be clear;
the clear image is obtained, the size data of the sample to be measured is calculated, whether the sample to be measured accords with the mark can be judged according to the imported size mark, meanwhile, unqualified positions are marked, and a measurement result report is given.
Based on the current coordinates, the specific steps of moving the second screw motor and the third screw motor to move the object to be detected to the field of view of the high-definition camera are as follows:
acquiring a characteristic value of a sample to be detected and detecting a central coordinate point of the characteristic value;
if the X value of the coordinate is larger than 0, the second screw motor is controlled to move the top seat towards the X-axis negative direction, and if the X value is smaller than 0, the top seat moves towards the X-axis square;
if the coordinate Y value is larger than 0, the third screw motor is controlled to move the top seat towards the negative Y-axis direction, and if the X value is smaller than 0, the top seat moves towards the square Y-axis direction.
According to the image measuring instrument capable of automatically adjusting the position of the sample to be measured and the measuring method, the first screw motor is fixedly connected with the supporting seat, the first guide block is in threaded connection with the screw rod of the first screw motor so that the first screw motor can drive the first guide block to move up and down, and the supporting block is fixedly connected with the first guide block so that the supporting block can move up and down along with the first guide block; the base is fixedly connected with the supporting seat, the second screw motor is fixedly connected with the base, and the middle seat is in threaded connection with the screw rod of the second screw motor, so that the middle seat can slide relative to the base by rotating the second screw motor under the support of the base; the third screw rod motor is fixedly connected with the middle seat, and the top seat is in threaded connection with the screw rod of the third screw rod motor through the third guide block and is in sliding connection with the middle seat, so that the third screw rod motor can rotate to drive the top seat to slide relative to the middle seat, and the Y-direction position can be adjusted; the large-visual-field-range lens is fixedly connected with the first guide block and is used for coarsely positioning a sample to be detected; the high-definition camera is fixedly connected with the supporting block and used for accurately adjusting the position of a sample to be measured and photographing again to measure the size. The large-field-of-view lens and the high-definition camera are used for acquiring information of the sample to be measured and automatically adjusting each motor, so that the sample to be measured is automatically moved and then photographed for size measurement, the detection efficiency of the sample can be further improved, the subjective factor influence caused by manual measurement is reduced, whether the sample to be measured meets the design standard or not and the analysis error is efficiently and accurately measured, and the problem that the measurement efficiency is reduced due to the fact that the position of the sample needs to be manually adjusted in the conventional measuring instrument is solved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of an image measuring instrument capable of automatically adjusting the position of a sample to be measured according to the present invention;
FIG. 2 is an exploded view of the XY axis control assembly of the present invention;
FIG. 3 is a flow chart of a method of measuring a sample to be measured using the image measuring instrument of the present invention;
fig. 4 is a flow chart of moving the second and third lead screw motors to move the object to be measured to within the field of view of the high definition camera based on the current coordinates.
The camera comprises a 1-XY axis control assembly, a 2-Z axis control assembly, a 3-large-field-of-view lens, a 4-high-definition camera, a 5-motor controller, a 11-base, a 12-middle base, a 13-top base, a 14-second lead screw motor, a 15-third lead screw motor, a 16-second guide block, a 17-third guide block, 18-transparent glass, a 21-support base, a 22-first lead screw motor, a 23-first guide block, a 24-support block, a 25-bottom illuminator, a 26-top illuminator, a 27-anti-skid pad, a 28-limit sheet, a 41-telecentric lens and a 42-CCD camera.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, in the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 and 2, the present invention provides an image measuring apparatus capable of automatically adjusting a position of a sample to be measured, comprising:
The X-axis and Y-axis control assembly 1, the Z-axis control assembly 2, the large-field-of-view lens 3, the high-definition camera 4 and the motor controller 5, wherein the Z-axis control assembly 2 comprises a supporting seat 21, a first screw motor 22, a first guide block 23 and a supporting block 24, the first screw motor 22 is fixedly connected with the supporting seat 21 and is positioned on one side of the supporting seat 21, the first guide block 23 is in threaded connection with a screw rod of the first screw motor 22 and is in sliding connection with the supporting seat 21, and the supporting block 24 is fixedly connected with the first guide block 23 and is positioned on one side of the first guide block 23; the XY axle control assembly 1 comprises a base 11, a middle seat 12, a top seat 13, a second screw motor 14, a third screw motor 15, a second guide block 16, a third guide block 17 and transparent glass 18, wherein the base 11 is fixedly connected with a supporting seat 21 and is positioned on one side of a first guide block 23, the second screw motor 14 is fixedly connected with the base 11 and is positioned on one side of the base 11, the middle seat 12 is in threaded connection with a screw of the second screw motor 14 through the second guide block 16 and is in sliding connection with the base 11, the third screw motor 15 is fixedly connected with the middle seat 12 and is positioned on one side of the middle seat 12, the top seat 13 is in threaded connection with a screw of the third screw motor 15 through the third guide block 17 and is in sliding connection with the middle seat 12 and is positioned on one side of the middle seat 12 far away from the base 11, the transparent glass 18 is fixedly connected with the top seat 13 and passes through the second guide block 16 and is in sliding connection with the first guide block 24 and the first guide block 14 and the first guide block 4 is positioned on one side of the top seat 13 and is close to the first guide block 24 and is in sliding connection with the first guide block 14 and the first guide block 13.
In this embodiment, the Z-axis control assembly 2 includes a support base 21, a first lead screw motor 22, a first guide block 23 and a support block 24, where the first lead screw motor 22 is fixedly connected with the support base 21 and is located at one side of the support base 21, the first guide block 23 is in threaded connection with a lead screw of the first lead screw motor 22 and is slidably connected with the support base 21, so that the first lead screw motor 22 can drive the first guide block 23 to move up and down, the support block 24 is fixedly connected with the first guide block 23 and is located at one side of the first guide block 23 so that the support block 24 can move up and down along with the first guide block 23, And can mount the lens; The XY axle control assembly 1 comprises a base 11, a middle seat 12, a top seat 13, a second screw motor 14, a third screw motor 15, a second guide block 16, a third guide block 17 and transparent glass 18, wherein the base 11 is fixedly connected with the supporting seat 21 and is positioned at one side of the first guide block 23, the second screw motor 14 is fixedly connected with the base 11 and is positioned at one side of the base 11, the middle seat 12 is in threaded connection with a screw of the second screw motor 14 through the second guide block 16 and is in sliding connection with the base 11, so that under the support of the base 11, The second screw motor 14 is rotated to enable the middle seat 12 to slide relative to the base 11 so as to adjust the position in the X direction; The third screw motor 15 is fixedly connected with the middle seat 12 and is positioned at one side of the middle seat 12, the top seat 13 is in threaded connection with the screw rod of the third screw motor 15 through the third guide block 17, is in sliding connection with the middle seat 12 and is positioned at one side of the middle seat 12 away from the base 11, so that the third screw motor 15 can rotate to drive the top seat 13 to slide relative to the middle seat 12, and the Y-direction position can be adjusted; the transparent glass 18 is fixedly connected with the top seat 13 and penetrates through the top seat 13, and light can enter from the outside through the transparent glass 18 to increase illumination brightness; The large-field-of-view lens 3 is fixedly connected with the first guide block 23, and the model of the large-field-of-view lens 3 is FL-BC1220-9M, and the lens can enable the peripheral part to maintain high resolution, so that a plurality of objects can be inspected at one time, and a larger range can be inspected in detail for coarsely positioning a sample to be detected; the high-definition camera 4 is fixedly connected with the supporting block 24 and is positioned on one side, close to the footstock 13, of the supporting block 24, the model number of the high-definition camera 4 is N10-W02, the high-definition camera is used for accurately adjusting the position of a sample to be measured and photographing again to measure the size, and the motor controller consists of an embedded microprocessor and a computer host or industrial personal computer equipment, so that a better system environment can be provided for image processing and measurement result report generation. The motor controller 5 is electrically connected to the first screw motor 22, the second screw motor 14 and the third screw motor 15 to control the rotation of the motors. The large-field-of-view lens 3 and the high-definition camera 4 are used for acquiring information of a sample to be measured and automatically adjusting each motor, so that the sample to be measured is automatically moved and then photographed for size measurement, the detection efficiency of the sample can be further improved, the subjective factor influence caused by manual measurement is reduced, whether the sample to be measured meets the design standard or not and the analysis error is efficiently and accurately measured, and the problem that the measurement efficiency is reduced due to the fact that the position of the sample needs to be manually adjusted in the conventional measuring instrument is solved.
Further, the high-definition camera 4 includes a telecentric lens 41 and a CCD camera 42, the telecentric lens 41 is fixedly connected with the supporting block 24 and is located at one side of the supporting block 24 near the top base 13, and the CCD camera 42 is fixedly connected with the telecentric lens 41 and is located at one side of the telecentric lens 41 far away from the top base 13.
In this embodiment, the model of the CCD camera is N10-W02, the model of the telecentric lens is HR0565D, and the telecentric lens 41 has a larger depth of field, can well focus the sample to be measured in the depth of field, and has a larger magnification factor, so that the detail size of the sample to be measured can be accurately measured.
Further, the Z-axis control assembly 2 further includes a bottom illuminator 25, where the bottom illuminator 25 is fixedly connected to the support base 21 and is located between the base 11 and the support base 21.
In this embodiment, the bottom illuminator 25 is a green parallel light source, and may be an FC-200mm light pipe with a size and technology, and the light direction of the parallel light source is not changed, and there is little attenuation, so that a better illumination environment can be provided for the high-definition camera 4 to measure the outline of the sample to be measured.
Further, the Z-axis control assembly 2 further includes a top illuminator 26, where the top illuminator 26 is fixedly connected to the support block 24 and is located on a side of the support block 24 near the telecentric lens 41.
In this embodiment, the top illuminator 26 is a white ring light source, and can provide illumination to the sample to be tested from multiple angles, and the model can be selected from FRLs 5428-29. The high-definition camera 4 can reduce the influence of shadows brought by a single-side light source on the measurement effect, provide a better illumination environment for measuring the detail size of the sample to be measured, and simultaneously can also extract the characteristics of the sample to be measured for the large-visual-field lens 3 unit and adjust the position of the sample to be measured to provide a good illumination environment.
Further, the Z-axis control assembly 2 further includes a non-slip pad 27, where the non-slip pad 27 is fixedly connected to the support base 21 and is located on a side of the support base 21 away from the base 11.
In this embodiment, the anti-slip pad 27 is used to increase the friction between the support base 21 and the placement plane, so that the placement can be made more stable.
Further, the Z-axis control assembly 2 further includes a limiting piece 28, where the limiting piece 28 is fixedly connected to the supporting seat 21 and located at a side of the supporting seat 21, which is close to the first guide block 23.
In this embodiment, when the first lead screw motor 22 controls the high-definition camera 4 to find the definition, the focal length may be always blurred, so that the first guide block 23 may move toward the top seat 13 and touch the top seat 13 to cause damage, so that the range of movement of the first guide block 23 is limited by the limiting piece 28, thereby protecting the measuring instrument from damage.
In a second aspect, referring to fig. 3, the present invention provides an image measurement method capable of automatically adjusting a position of a sample to be measured, including:
S101, placing a sample to be tested on a top seat 13;
S102, acquiring first image data in a field of view in real time through a large-field-of-view lens 3;
The top base 13 is photographed without interruption through the large-field lens 3 and the related graphic information is acquired.
S103, a Cartesian coordinate system is established in a view field based on the first image data, characteristic values of a sample to be detected are extracted, and the current coordinates of the sample to be detected are calculated;
After the image measuring instrument is installed, a Cartesian coordinate system is established by default by setting the lens center of the high-definition camera 4 as the origin of coordinates so as to grid the plane of the top seat 13, and then the current coordinates of the sample to be measured are confirmed according to the first image data.
S104, based on the current coordinates, moving the second screw motor 14 and the third screw motor 15, and moving the object to be detected to the field of view of the high-definition camera;
Referring to fig. 4, the specific steps are:
S201, acquiring a characteristic value of a sample to be detected and detecting a central coordinate point of the characteristic value;
S202, if the X value of the coordinate is larger than 0, controlling the second screw motor 14 to move the top seat 13 in the X-axis negative direction, and if the X value is smaller than 0, moving the top seat to the X-axis square;
if the coordinate Y is greater than 0, the third screw motor 15 is controlled to move the top base 13 in the negative Y-axis direction, and if the coordinate Y is less than 0, the third screw motor is controlled to move in the square Y-axis direction.
S105, acquiring second image data in the view field in real time based on the high-definition camera 4;
and the sample to be measured is photographed continuously through the high-definition camera 4 to obtain second image data, and the resolution of the second image data is higher than that of the first image data, so that the later dimension measurement is facilitated.
S106, moving the second screw motor 14 and the third screw motor 15 based on the Cartesian coordinate system and the second image data to enable the sample to be detected to be positioned in the center of the field of view;
The steps S201 to S203 may be repeated in this process, so as to place the sample to be measured at the very center corresponding to the high-definition camera 4 based on the high-resolution image, so as to facilitate the measurement of the size.
S107, acquiring the ambiguity of a sample to be detected in an image, and controlling a first screw motor to adjust the height of the high-definition camera 4 according to the ambiguity index of the sample to be detected so as to enable imaging to be clear;
The ambiguity can be calculated by using algorithms such as Brenner gradient function and teningrad gradient function, and then the first screw motor 22 is moved up and down to compare the ambiguity and move to a place with lower ambiguity, and when the ambiguity is smaller than the set value, the image is considered to be clear and the movement is stopped.
S108, acquiring a clear image, calculating size data of the sample to be measured, judging whether the sample to be measured accords with the mark according to the imported size mark, marking unqualified positions, and giving a measurement result report.
A calibration parameter is preset for the distance between the plane of the top seat 13 and the first guide block 23 by adopting a calibration method, then the size data of the sample to be measured can be obtained based on the calibration parameter by photographing, then the sample can be compared with the size marking to judge whether the sample is qualified or not, meanwhile, unqualified positions are marked, and finally, a measurement result report can be given based on a preset format.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (1)
1. An image measuring instrument capable of automatically adjusting the position of a sample to be measured is characterized in that,
The high-definition camera comprises an XY axis control assembly, a Z axis control assembly, a large-visual-field lens, a high-definition camera and a motor controller, wherein the Z axis control assembly comprises a supporting seat, a first screw rod motor, a first guide block and a supporting block, the first screw rod motor is fixedly connected with the supporting seat and is positioned on one side of the supporting seat, the first guide block is in threaded connection with a screw rod of the first screw rod motor and is in sliding connection with the supporting seat, and the supporting block is fixedly connected with the first guide block and is positioned on one side of the first guide block; the XY axle control assembly comprises a base, a middle seat, a top seat, a second screw motor, a third screw motor, a second guide block, a third guide block and transparent glass, wherein the base is fixedly connected with the supporting seat and is positioned at one side of the first guide block, the second screw motor is fixedly connected with the base and is positioned at one side of the base, the middle seat is in threaded connection with the screw of the second screw motor through the second guide block and is in sliding connection with the base, the third screw motor is fixedly connected with the middle seat and is positioned at one side of the middle seat, the top seat is in threaded connection with the screw of the third screw motor through the third guide block and is in sliding connection with the middle seat and is positioned at one side of the middle seat far away from the base, the transparent glass is fixedly connected with the top seat and passes through the top seat, the large-view-range lens is fixedly connected with the first guide block and is positioned at one side of the first guide block, which is close to the top seat, the third screw motor is close to the supporting seat, and is electrically connected with the first camera, and is positioned at one side of the third guide block, which is close to the supporting seat, and is electrically connected with the first camera;
The high-definition camera comprises a telecentric lens and a CCD camera, wherein the telecentric lens is fixedly connected with the supporting block and is positioned at one side of the supporting block, which is close to the top seat, and the CCD camera is fixedly connected with the telecentric lens and is positioned at one side of the telecentric lens, which is far away from the top seat;
the Z-axis control assembly further comprises an anti-slip pad, wherein the anti-slip pad is fixedly connected with the supporting seat and is positioned on one side, far away from the base, of the supporting seat;
the Z-axis control assembly further comprises a limiting piece, wherein the limiting piece is fixedly connected with the supporting seat and is positioned at one side of the supporting seat, which is close to the first guide block;
the Z-axis control assembly further comprises a bottom illuminator, wherein the bottom illuminator is fixedly connected with the supporting seat and is positioned between the base and the supporting seat;
the Z-axis control assembly further comprises a top illuminator which is fixedly connected with the supporting block and is positioned on one side, close to the telecentric lens, of the supporting block.
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| CN212300252U (en) * | 2020-07-17 | 2021-01-05 | 桂林量具刃具有限责任公司 | Image measuring instrument capable of automatically adjusting position of sample to be measured |
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| CN109211110A (en) * | 2018-09-18 | 2019-01-15 | 佛山科学技术学院 | A kind of flat-type workpiece size detection system and method based on machine vision |
| CN109714535B (en) * | 2019-01-15 | 2020-12-22 | 南京信息工程大学 | Automatic focusing machine vision measuring device and method based on chromatic aberration |
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| CN212300252U (en) * | 2020-07-17 | 2021-01-05 | 桂林量具刃具有限责任公司 | Image measuring instrument capable of automatically adjusting position of sample to be measured |
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