CN111707666B - Diamond waist line observer and observation method - Google Patents
Diamond waist line observer and observation method Download PDFInfo
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- CN111707666B CN111707666B CN202010393370.1A CN202010393370A CN111707666B CN 111707666 B CN111707666 B CN 111707666B CN 202010393370 A CN202010393370 A CN 202010393370A CN 111707666 B CN111707666 B CN 111707666B
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- 239000010432 diamond Substances 0.000 title claims abstract description 130
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001179 sorption measurement Methods 0.000 claims abstract description 67
- 238000003384 imaging method Methods 0.000 claims abstract description 53
- 230000008093 supporting effect Effects 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims abstract 2
- 238000007789 sealing Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/87—Investigating jewels
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Microscoopes, Condenser (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a diamond waist line observer, which comprises a supporting platform, an imaging adjustment system, an imaging system, a diamond positioning device and a diamond adsorption rotation system, wherein the imaging adjustment system is arranged on the supporting platform; the imaging system comprises a microscope lens and a camera connected with the microscope lens, and is used for shooting a waist line picture of a diamond observed in the microscope, and the axis of the microscope lens extends along the left-right direction; the diamond positioning device comprises a hand wheel, a cam shaft, a cam, a balancing weight, a sliding bearing, a polished rod and a positioning block, wherein a positioning hole for enabling a diamond drill point to extend into the positioning block is formed in the bottom of the positioning block; the diamond adsorption rotating system is located below the positioning block and comprises a vacuum adsorption device for adsorbing a table top of a diamond and a motor for driving the vacuum adsorption device to rotate. According to the circumferential distribution characteristics of waist formation of a large number of diamonds, the method combines an optical zoom imaging principle, a pneumatic rotary adsorption method and an image processing technology, and the identification result is accurate.
Description
Technical Field
The invention belongs to the technical field of jewelry jade measurement and detection, and particularly relates to a diamond waist line observer and an observation method.
Background
The processing state of the diamond product is important information for measuring the diamond cutting technology, and is also unique geometric characteristic of the diamond product. The processing state and the geometric form of the waist line of the diamond directly reflect the processing and grinding level of the diamond, which is an important embodiment of the processing technology capability and the product quality of the diamond, and the geometric dimension of the waist line of the diamond in the circumference distribution is the error accumulation result naturally formed by various procedures in the diamond processing process, so that the waist line geometric features of different diamond individuals have obvious differences, are the inherent features of each diamond product, can be applied as the identity marking information of a single diamond product, and provide important basis for the identity recognition, tracing and supervision of the diamond product in the circulation process. Therefore, the state observation instrument of the diamond waist line is researched, the accurate observation and recording of the state of the diamond waist line are carried out, and the method has important significance for improving the diamond processing technology, and identifying and authenticating.
At present, the jewelry appraiser is generally relied on to check with naked eyes, and the experience and state of the jewelry appraiser are different, so that appraisal errors are unavoidable, and the accuracy is not high enough.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a diamond waist line observer and an observation method, which are accurate in identification result by combining an optical zoom imaging principle, a pneumatic rotation adsorption method and an image processing technology according to circumferential distribution characteristics of waist forming of a large number of diamonds.
To achieve the above object, according to one aspect of the present invention, there is provided a diamond waist line scope, comprising a support platform, an imaging adjustment system, an imaging system, a diamond positioning device, and a diamond adsorbing and rotating system, wherein:
the imaging adjustment system is arranged on the supporting platform, and the imaging system is arranged on the imaging adjustment system and is used for driving the imaging system to move left and right, front and back and up and down;
the imaging system comprises a microscope lens and a camera connected with the microscope lens, and is used for shooting a waist line picture of a diamond observed in the microscope, and the axis of the microscope lens extends along the left-right direction;
the diamond positioning device comprises a hand wheel, a cam shaft, a cam, a balancing weight, a sliding bearing, a polish rod and a positioning block, wherein the cam shaft is horizontally arranged and rotatably installed on the supporting platform, one end of the cam shaft is connected with the hand wheel, the other end of the cam shaft is connected with the cam, the cam is used for bearing the balancing weight and driving the balancing weight to move up and down, the sliding bearing is vertically installed on the supporting platform, the polish rod passes through the sliding bearing, the upper end of the polish rod is connected with the balancing weight, the lower end of the polish rod is connected with the positioning block, and a positioning hole for enabling a diamond drill point to extend into the positioning block is formed in the bottom of the positioning block;
the diamond adsorption rotating system is positioned below the positioning block and comprises a vacuum adsorption device for adsorbing a table top of a diamond and a motor for driving the vacuum adsorption device to rotate.
Preferably, the diamond positioning device further comprises an extension spring, wherein the extension spring is arranged on the polish rod in a penetrating mode, one end of the extension spring is fixedly connected with the balancing weight, and the other end of the extension spring is fixedly connected with the supporting platform, so that the balancing weight is always in contact with the cam.
Preferably, the imaging adjustment system comprises a focusing device for driving the imaging system to move left and right, an upgrading adjustment system for driving the imaging system to move up and down, and a one-dimensional position adjustment system for driving the imaging system to move back and forth.
Preferably, the focusing device is a coarse and fine focus mount.
Preferably, the microscope is a continuously variable magnification embodying microscope.
Preferably, an annular light source and/or a coaxial light source is/are also mounted on the microscope head.
Preferably, the support platform is provided with a first limit pin and a second limit pin at positions corresponding to the cams respectively, and when the balancing weight reaches the highest position, the first limit pin is in contact with the cams to limit, and when the balancing weight reaches the lowest position, the second limit pin is in contact with the cams to limit.
Preferably, the vacuum adsorption device comprises a rotary adsorption main shaft, a vacuum cavity, a motor and a two-dimensional moving platform, wherein the rotary adsorption main shaft is vertically arranged, the lower end of the rotary adsorption main shaft penetrates through the vacuum cavity and then is connected with the motor through a coupler, and the two-dimensional displacement adjustment platform is connected with the motor so as to drive the motor to move up and down and back and forth along the vertical direction.
Preferably, the vacuum cavity is provided with a central air chamber, two main shaft matching cavities and two sealing ring mounting grooves, the central air chamber is positioned between the two main shaft matching cavities, the two main shaft matching cavities are positioned between the two sealing ring mounting grooves, each sealing ring mounting groove is internally provided with a sealing ring, each sealing ring is fixedly sleeved on the rotary adsorption main shaft, the diameter of the central air chamber is larger than that of the main shaft matching cavity, the diameter of the main shaft matching cavity is larger than that of the rotary adsorption main shaft, the vacuum cavity is provided with an air suction hole communicated with the central air chamber, the inner wall of the air suction hole is provided with a threaded hole so as to be connected with an air pump through an airtight threaded joint and a pipeline, a vertical blind hole is arranged along the axial direction of the rotary adsorption main shaft, the vertical blind hole extends downwards from the top end face of the rotary adsorption main shaft, and a radial hole communicated with the vertical blind hole and the central air chamber is arranged along the radial direction of the rotary adsorption main shaft.
According to another aspect of the present invention, there is also provided a method for performing a diamond belt line observation by a diamond belt line observer, comprising the steps of:
1) Placing the table surface of the diamond on a vacuum adsorption device, and allowing the vacuum adsorption device to adsorb the diamond;
2) The cam is rotated through the hand wheel, so that the polished rod drives the positioning block to move downwards, the diamond is moved to enable the drill tip of the diamond to be aligned with the positioning hole of the positioning block, the positioning block is continuously moved downwards until the positioning block is contacted with the diamond, centering and positioning of the diamond are completed, and then the hand wheel is rotated in the opposite direction, so that the positioning block moves upwards to be separated from the diamond;
3) Adjusting an imaging adjustment system and a microscope lens to enable a camera to acquire a diamond waist line image with required definition;
4) Calibrating the field width of an imaging system by adopting a line ruler on a camera;
5) Obtaining the circumference and the radius of the distribution circumference of the waist line of the diamond by the weight of the diamond and a cutting method;
6) Obtaining a central angle alpha corresponding to the arc length of the diamond acquired by a single view according to the view width of the step 4) and the radius of the distribution circumference of the waist line of the diamond of the step 5);
7) Dividing 360 degrees by a central angle alpha, rounding the obtained quotient to a great number direction by the nearest numerical value, and taking the numerical value obtained by dividing 360 degrees by the rounded quotient as a new central angle beta;
8) Setting a single rotation angle value of a motor in the diamond adsorption rotation system according to the central angle beta, photographing and storing images by a camera once every rotation angle beta of the motor, and obtaining images of all positions of the distribution circumference of the waist line of the diamond by alternately rotating and photographing until the rotation of the diamond reaches 360 degrees.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
1) The imaging adjustment system can conveniently adjust the position of a microscope of the imaging system, can clearly photograph the waist line of the diamond through the imaging system, can align and center the diamond through the diamond positioning device, and can adsorb the diamond and rotate the diamond through the diamond adsorption rotation system, so that the imaging system can photograph the waist line of the diamond in 360 degrees in an all-around way, the identification and the authentication are conveniently carried out through the waist line of the diamond, and the authentication result is accurate.
2) According to the invention, the polish rod and the positioning block are driven to move up and down through the rotation of the cam, the structure is compact, the reliability is high, and the drill point of the diamond can extend into the positioning hole of the positioning block to perform self-adaptive alignment and centering, so that the imaging system is favorable for accurately photographing and observing the diamond.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a schematic diagram of the assembly of a rotary adsorption spindle with a vacuum chamber in accordance with the present invention;
FIG. 4a is a schematic diagram of the various parts of a diamond;
fig. 4b is an image taken at a of the belt line in fig. 4 a.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Referring to the drawings, a diamond waist line observation instrument comprises a supporting platform, an imaging adjustment system, an imaging system, a diamond positioning device 31 and a diamond adsorption rotation system, wherein:
the imaging adjustment system is arranged on the supporting platform, and the imaging system is arranged on the imaging adjustment system and is used for driving the imaging system to move left and right, front and back and up and down;
the imaging system comprises a micro lens 11 and a camera 13 connected with the micro lens, and is used for shooting a waist line picture of a diamond observed in the micro lens 11, wherein the axis of the micro lens 11 extends along the left-right direction;
the diamond positioning device 31 comprises a hand wheel 312, a cam shaft 314, a cam 310, a balancing weight 301, a sliding bearing 304, a polished rod 303 and a positioning block 305, wherein the cam shaft 314 is horizontally arranged and rotatably arranged on a vertical flat plate 311 of the supporting platform through a radial bearing 313, one end of the cam shaft 314 is connected with the hand wheel 312, the other end of the cam shaft is connected with the cam 310, the cam 310 receives the balancing weight 301 and is used for driving the balancing weight 301 to move up and down, the sliding bearing 304 is vertically arranged on the horizontal supporting flat plate 51 of the supporting platform, the polished rod 303 passes through the sliding bearing 304, the upper end of the polished rod 303 is connected with the balancing weight 301, the lower end of the polished rod 303 is connected with the positioning block 305, and a positioning hole for enabling a diamond drill point to extend into the positioning block 305 is arranged at the bottom of the positioning block 305; the bottom of the positioning block 305 preferably adopts a conical structure with a large upper part and a small lower part, and the positioning hole is arranged on the conical structure, so that the threaded connection strength of the upper part is ensured, the diamond with a small size is conveniently and rapidly positioned to the blind hole, and meanwhile, a relatively large reflection inclination angle is formed between the conical surface and the axis of the micro lens 11, so that the interference caused by the reflection of the background light into the lens hole of the micro lens 11 after the irradiation of the coaxial light source 14 is prevented
The diamond adsorption rotation system is located below the positioning block 305, and the diamond adsorption rotation system includes a vacuum adsorption device for adsorbing a table top of a diamond and a motor 45 for driving the vacuum adsorption device to rotate.
Further, the diamond positioning device 31 further includes an extension spring 302, where the extension spring 302 is installed on the polish rod 303 in a penetrating manner, one end of the extension spring 302 is fixedly connected to the balancing weight 301, and the other end is fixedly connected to the supporting platform, so that the balancing weight 301 is always in contact with the cam 310.
Further, the imaging adjustment system comprises a focusing device 21 for driving the imaging system to move left and right, an upgrading adjustment system for driving the imaging system to move up and down, and a one-dimensional position adjustment system 23 for driving the imaging system to move back and forth.
Further, the focusing device 21 is a coarse and fine focus adjustment bracket, and the coarse and fine focus adjustment bracket can perform coarse adjustment and fine adjustment on the focal length of the microscope.
Further, the microscope lens is connected with a zoom mechanism, the zoom mechanism is connected with the camera, and the zoom mechanism is installed on the imaging adjustment system. The microscope 11 is preferably a apo (apochromatic) flat field microscope or a dark field microscope, the magnification varying mechanism 12 can be of various types, and the microscope 11 and the magnification varying mechanism 12 can be combined in various forms.
Further, an annular light source 15 and/or a coaxial light source 14 are/is also mounted on the microscope. Referring to fig. 1, the light emitting point of the coaxial light source 14 is inserted into the barrel of the micro-lens 11, and the light is collimated by the spectroscope and then coaxial with the micro-lens, so that the accuracy and reproducibility of vision are improved, and the terminal and the radiator are exposed and face the supporting platform.
Further, the support platform is provided with a first limit pin and a second limit pin at positions corresponding to the cams 310 respectively, and when the balancing weights 301 reach the highest positions, the first limit pins are in contact with the cams 310 to limit, and when the balancing weights 301 reach the lowest positions, the second limit pins are in contact with the cams 310 to limit. At the two limiting positions of the first limiting pin and the second limiting pin, the cam and all moving parts contacted with the cam can be kept stable and static under the action of gravity.
Further, the vacuum adsorption device comprises a rotary adsorption main shaft 41, a vacuum cavity 42, a motor 45 and a two-dimensional moving platform, wherein the rotary adsorption main shaft 41 is vertically arranged, the lower end of the rotary adsorption main shaft 41 penetrates through the vacuum cavity 42 and then is connected with the motor 45 through a coupler 43, and the two-dimensional displacement adjustment platform 47 is connected with the motor 45 so as to drive the motor 45 to move up and down and back and forth. Preferably, a first L-shaped rib plate 46 and a second L-shaped rib plate 48 are respectively arranged on two sides of the end face of the bottom of the vacuum cavity 42, and the bottoms of the first L-shaped rib plate 46 and the second L-shaped rib plate 48 are connected with a two-dimensional displacement adjusting table 47, so that a reinforcing and supporting effect is achieved. The two-dimensional displacement adjustment table 47 has the function of aligning the center line of the rotary suction spindle with the center line of the positioning block, has the function of eliminating the centering error adjustment of the assembly center and the center for the assembly of the instrument, and the one-dimensional displacement adjustment device 23 has the function of adjusting the optical axis of the microscope when the instrument is assembled, so that the optical axis is coplanar with the center line of the rotary suction spindle and the center line of the positioning block, and the distances from the plane of the optical axis to the positioning block and the rotary suction spindle are equal to eliminate the error of manual assembly. The two-dimensional displacement adjustment table 47 and the one-dimensional adjustment device 23 are used for adjusting the observation instrument during assembly, the observation instrument is locked after adjustment, the observation instrument reaches a qualified state, and the two-dimensional displacement adjustment table 47 and the one-dimensional adjustment device 23 are not allowed to perform any adjustment during measurement and use after delivery.
Further, the vacuum cavity 42 has a central air chamber 422, two main shaft matching cavities and two sealing ring mounting grooves, the central air chamber 422 is located between the two main shaft matching cavities, the two main shaft matching cavities are located between the two sealing ring mounting grooves, an upper main shaft matching cavity 421 and a lower main shaft matching cavity 424 are respectively arranged in each sealing ring mounting groove, the two sealing rings are respectively an upper sealing ring 425 and a lower sealing ring 426, each sealing ring is fixedly sleeved on the rotary adsorption main shaft 41, the diameter of the central air chamber 422 is larger than that of the main shaft matching cavity, the diameter of the main shaft matching cavity is larger than that of the rotary adsorption main shaft 41, an air suction hole communicated with the central air chamber 422 is formed in the vacuum cavity 42, a threaded hole 423 is formed in the inner wall of the air suction hole to be connected with an air pump through an airtight threaded joint and a pipeline, a vertical blind hole is formed in the axial direction of the rotary adsorption main shaft 41, the vertical blind hole extends downwards from the top end of the rotary adsorption main shaft 41, and a radial blind hole communicated with the central air chamber 422 is formed in the radial direction of the rotary adsorption main shaft 41. The depth of the vertical blind hole is larger than the distance from the upper end surface of the rotary adsorption main shaft 41 to the middle part of the central air chamber 422, and the radial holes can enable the external air on the upper end surface of the rotary adsorption main shaft 41 to sequentially pass through the vertical blind hole, the radial holes, the central air chamber 422, the threaded pipeline and the air pump of the rotary adsorption main shaft 41 to be kept in a communicated state. When the diamond table surface is downwards placed on the end face of the rotary adsorption main shaft 41 and covers the opening of the vertical blind hole, the air pump is started to suck air, negative pressure adsorption force is formed on the opening of the upper end face inside the vertical blind hole of the rotary adsorption main shaft 41, the diamond is firmly adsorbed on the upper end face of the rotary adsorption main shaft 41 in the rotation process of the rotary adsorption main shaft 41, and the diamond is synchronously rotated along with the rotary adsorption main shaft 41, so that sliding does not occur.
According to another aspect of the present invention, there is also provided a method for performing a diamond belt line observation using a diamond belt line observer, comprising the steps of:
1) Placing the table surface of the diamond on a vacuum adsorption device, and allowing the vacuum adsorption device to adsorb the diamond;
2) Rotating the hand wheel 312 of the cam rotation mechanism 31, so that the polished rod 303 drives the positioning block 305 to move downwards, the diamond tip is placed into the positioning hole of the positioning block 305 by moving the diamond, the positioning block 305 is continuously moved downwards until the positioning block 305 contacts with the diamond, and then the hand wheel 312 is reversed, the positioning block 305 is moved upwards so as to be separated from the diamond, and the centering and positioning of the diamond are completed.
3) Adjusting an imaging adjustment system (a focusing device 21 and a lifting adjustment device 22 of the imaging adjustment system) and adjusting a zoom mechanism 12 in the imaging system to enable the size of a diamond waistline image acquired by a camera 13 to be suitable, the image to be clear, and the required definition to be met;
4) The line ruler is used for calibrating the view field width value of the imaging system, and a specific metering measurement standard calibration method can refer to a reference of a line ruler-based visual detection calibration method.
5) Calculating the circumference and radius of the distribution circumference of the waist line of the diamond by the weight and cutting method of the diamond, and grading the diamond by referring to the reference GBT-16554-2017;
6) Obtaining a central angle alpha corresponding to the arc length of the diamond acquired by a single view according to the view width of the step 4) and the radius of the distribution circumference of the waist line of the diamond of the step 5);
7) Dividing 360 degrees by a central angle alpha, rounding the obtained quotient to a great number direction by the nearest numerical value, and taking the numerical value obtained by dividing 360 degrees by the rounded quotient as a new central angle beta;
8) Setting a single rotation angle value of the motor 45 in the diamond adsorption rotation system according to the new central angle beta, enabling the motor 45 to drive the diamond to rotate again, photographing and storing images once by the camera 13 every rotation angle beta of the motor 45, and obtaining images of all positions of the distribution circumference of the waist line of the diamond by alternately rotating and photographing until the rotation of the diamond reaches 360 degrees.
Further, this step 4) may be omitted during repeated use of the scope. When the scope is first used, or the adjustment of the zoom mechanism 12 described in step 3) is performed, the operation of step 4) must be performed to obtain a new field width value.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. The utility model provides a diamond stringcourse viewer which characterized in that, includes supporting platform, formation of image adjustment system, imaging system, diamond positioner and diamond absorption rotary system, wherein:
the imaging adjustment system is arranged on the supporting platform, and the imaging system is arranged on the imaging adjustment system and is used for driving the imaging system to move left and right, front and back and up and down;
the imaging system comprises a microscope lens and a camera connected with the microscope lens, and is used for shooting a waist line picture of a diamond observed in the microscope, and the axis of the microscope lens extends along the left-right direction;
the diamond positioning device comprises a hand wheel, a cam shaft, a cam, a balancing weight, a sliding bearing, a polish rod and a positioning block, wherein the cam shaft is horizontally arranged and rotatably installed on the supporting platform, one end of the cam shaft is connected with the hand wheel, the other end of the cam shaft is connected with the cam, the cam bears the balancing weight and is used for driving the balancing weight to move up and down, the sliding bearing is vertically installed on the supporting platform, the polish rod passes through the sliding bearing, the upper end of the polish rod is connected with the balancing weight, the lower end of the polish rod is connected with the positioning block, the bottom of the positioning block is provided with a positioning hole for enabling a diamond drill point to extend into the positioning block, the bottom of the positioning block adopts a conical structure with the upper size and the lower size, and the positioning hole is arranged on the conical structure;
the diamond adsorption rotating system is positioned below the positioning block and comprises a vacuum adsorption device for adsorbing a table top of a diamond and a motor for driving the vacuum adsorption device to rotate;
the imaging adjustment system comprises a focusing device for driving the imaging system to move left and right, an upgrading adjustment system for driving the imaging system to move up and down, and a one-dimensional position adjustment system for driving the imaging system to move back and forth;
the annular light source and/or the coaxial light source are/is also arranged on the microscope head, the luminous point of the coaxial light source is inserted into the lens barrel of the microscope head, and the light is collimated by the spectroscope and then is coaxial with the microscope head, so that the accuracy and reproducibility of vision are improved;
the vacuum adsorption device comprises a rotary adsorption main shaft, a vacuum cavity and a two-dimensional displacement adjustment table, wherein the rotary adsorption main shaft is vertically arranged, the lower end of the rotary adsorption main shaft penetrates through the vacuum cavity and is connected with a motor through a coupler, the two-dimensional displacement adjustment table is connected with the motor so as to drive the motor to move up and down and back and forth, the two-dimensional displacement adjustment table has the functions of enabling the central line of the rotary adsorption main shaft to be in the same line with the central line of a positioning block, eliminating the centering error adjustment function of a rotation center and a center of an assembly for the assembly of an instrument, adjusting the optical axis of a microscope during the assembly of the instrument, enabling the central line of the optical axis and the rotary adsorption main shaft to be coplanar with the central line of the positioning block, and enabling the distance from a plane where the optical axis is to be equal to the distance between the positioning block and the rotary adsorption main shaft so as to eliminate the error of manual assembly;
the method for observing the waist line of the diamond by the waist line observer of the diamond comprises the following steps:
1) Placing the table surface of the diamond on a vacuum adsorption device, and allowing the vacuum adsorption device to adsorb the diamond;
2) The cam is rotated through the hand wheel, so that the polished rod drives the positioning block to move downwards, the diamond is moved to enable the drill tip of the diamond to be aligned with the positioning hole of the positioning block, the positioning block is continuously moved downwards until the positioning block is contacted with the diamond, centering and positioning of the diamond are completed, and then the hand wheel is rotated in the opposite direction, so that the positioning block moves upwards to be separated from the diamond;
3) Adjusting an imaging adjustment system and a microscope lens to enable a camera to acquire a diamond waist line image with required definition;
4) Calibrating the field width of an imaging system by adopting a line ruler on a camera;
5) Obtaining the circumference and the radius of the distribution circumference of the waist line of the diamond by the weight of the diamond and a cutting method;
6) Obtaining a central angle alpha corresponding to the arc length of the diamond acquired by a single view according to the view width of the step 4) and the radius of the distribution circumference of the waist line of the diamond of the step 5);
7) Dividing 360 degrees by a central angle alpha, rounding the obtained quotient to a great number direction by the nearest numerical value, and taking the numerical value obtained by dividing 360 degrees by the rounded quotient as a new central angle beta;
8) Setting a single rotation angle value of a motor in the diamond adsorption rotation system according to the central angle beta, photographing and storing images by a camera once every rotation angle beta of the motor, and obtaining images of all positions of the distribution circumference of the waist line of the diamond by alternately rotating and photographing until the rotation of the diamond reaches 360 degrees.
2. The diamond belt line scope of claim 1 wherein the diamond positioning device further comprises an extension spring mounted on the polish rod, one end of the extension spring being fixedly connected to the weight and the other end being fixedly connected to the support platform such that the weight is always in contact with the cam.
3. The diamond belt line scope of claim 1 wherein the focusing means is a coarse and fine focus mount.
4. The diamond belt line scope of claim 1 wherein the microscope lens is coupled to a zoom mechanism, the zoom mechanism is coupled to the camera, and the zoom mechanism is mounted on the imaging adjustment system.
5. The diamond belt line observer according to claim 1, wherein the support platform is provided with a first limit pin and a second limit pin at positions corresponding to the cams, respectively, and the first limit pin contacts the cams to limit when the balancing weight reaches the highest position, and the second limit pin contacts the cams to limit when the balancing weight reaches the lowest position.
6. The diamond waist line observation instrument according to claim 1, wherein the vacuum chamber is provided with a central air chamber, two main shaft matching cavities and two sealing ring mounting grooves, the central air chamber is positioned between the two main shaft matching cavities, the two main shaft matching cavities are positioned between the two sealing ring mounting grooves, sealing rings are mounted in the sealing ring mounting grooves, each sealing ring is fixedly sleeved on the rotary adsorption main shaft, the diameter of the central air chamber is larger than that of the main shaft matching cavity, the diameter of the main shaft matching cavity is larger than that of the rotary adsorption main shaft, an air suction hole communicated with the central air chamber is formed in the vacuum chamber, a threaded hole is formed in the inner wall of the air suction hole and is connected with an air pump through an airtight threaded joint and a pipeline, a vertical blind hole is formed in the axial direction of the rotary adsorption main shaft, the vertical blind hole extends downwards from the top end face of the rotary adsorption main shaft, and a radial hole communicated with the vertical blind hole and the center is formed in the radial direction of the rotary adsorption main shaft.
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| CN113960044B (en) * | 2021-10-12 | 2023-09-01 | 湄洲湾职业技术学院 | Visual acquisition equipment for jade machining degree inspection and application method thereof |
| CN114047128A (en) * | 2021-11-15 | 2022-02-15 | 深圳市一博珠宝仪器有限公司 | Method and instrument for measuring and displaying optical characteristics of diamond |
| CN115790327B (en) * | 2023-02-03 | 2023-05-26 | 山东高原油气装备有限公司 | Pneumatic full-length drift diameter detection device for petroleum casing pipe |
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