CN112325783A - Automatic measuring device and method for diameter of tin ball - Google Patents
Automatic measuring device and method for diameter of tin ball Download PDFInfo
- Publication number
- CN112325783A CN112325783A CN202011230587.7A CN202011230587A CN112325783A CN 112325783 A CN112325783 A CN 112325783A CN 202011230587 A CN202011230587 A CN 202011230587A CN 112325783 A CN112325783 A CN 112325783A
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- China
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- solder ball
- optical glass
- computer
- diameter
- industrial camera
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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
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a device and a method for automatically measuring the diameter of a solder ball, and relates to the field of automatic measurement of solder balls. The automatic measuring device for the diameter of the solder ball comprises optical glass, wherein the optical glass is cylindrical, the upper end face of the optical glass is used for placing the solder ball, the lower part of the optical glass is provided with a telecentric parallel light source, an industrial camera is arranged right above the optical glass and adopts a telecentric lens, the industrial camera is connected with a computer, upper computer software is installed on the computer, the industrial camera is fixed through a bracket and is connected with the computer through a usb data line, and the pixel of industrial camera shooting is 800-1000 ten thousand. During measurement, the solder balls are placed on the optical glass; acquiring image information of the solder ball by using a telecentric lens; the industrial camera transmits the image information to the computer, and the computer measures the diameter of the projection of the solder ball in the visual field range according to the image information and counts an average value for the reference of a producer.
Description
Technical Field
The invention relates to the field of automatic measurement of solder balls, in particular to an automatic measuring device and method for the diameter of a solder ball.
Background
In the production of tin balls, the tin balls are continuously sprayed out from the spray holes and fall into the collecting container, because the tin liquid in the crucible continuously falls, the pressure of the spray holes is gradually reduced, at the moment, if no intervention is made, the diameter of the tin balls can be gradually reduced along with the falling of the tin liquid, the pressure in the crucible needs to be adjusted in real time according to the diameter of the tin balls, the real-time measurement of the diameter of the produced tin balls becomes a key, and because the diameter of the tin balls can also be scattered in a range value at the same time, a certain number is needed for the measurement, the measurement is preferably about 50 particles at a time according to experience, and if the manual measurement is carried out by a microscope, the requirement can not be.
Disclosure of Invention
The invention aims to provide a device and a method for automatically measuring the diameter of a solder ball, which adopt an industrial microscope and a computer upper computer to be matched to realize automatic measurement.
The invention has the following technical scheme:
the utility model provides an automatic measuring device of tin ball diameter, includes optical glass, and optical glass's up end is used for placing the tin ball, and optical glass's lower part sets up telecentric parallel light source, sets up the industry camera directly over optical glass, and the industry camera adopts telecentric lens, and the industry camera is connected the computer, installs host computer software on the computer.
Preferably, the optical glass is cylindrical.
Preferably, the industrial camera is fixed by a bracket and is connected with the computer through a usb data line.
The automatic measuring method for the diameter of the solder ball adopts the device and comprises the following steps:
step a, placing a tin ball on optical glass;
step b, a telecentric lens collects image information of the solder balls;
and c, the industrial camera transmits the image information to the computer, the computer measures the diameter of the projection of the solder ball in the visual field range according to the image information, and an average value is counted for a producer to refer to.
Preferably, the upper computer software is compiled by using HALCON, the diameter and the roundness of each solder ball are obtained by measuring the pixel sum of the projection of each solder ball according to the obtained solder ball projection picture, the average value is counted, and the data is displayed on a software page.
Preferably, the pixels for industrial imaging are 800 to 1000 ten thousand.
The invention has the following beneficial effects:
during measurement, the solder ball is placed on the optical glass, and the telecentric lens acquires the image information of the solder ball; the industrial camera transmits image information to the computer, the computer measures the diameter of the projection of the solder ball in the visual field range according to the image information, and calculates an average value for a producer to refer to, the whole measuring process is completely realized automatically, and the method is convenient and fast.
Drawings
FIG. 1 is a schematic view of an automatic measuring device for solder ball diameter;
FIG. 2 is a schematic view of a solder ball projection taken by an industrial camera;
fig. 3 is a schematic diagram of upper computer software.
Wherein, 1 is an industrial camera, 2 is a telecentric lens, 3 is a solder ball to be tested, 4 is a telecentric parallel light source, and 5 is a computer.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
referring to fig. 1, the automatic measuring device for the diameter of the solder ball comprises optical glass, wherein the optical glass is cylindrical, the upper end surface of the optical glass is used for placing a solder ball 3 to be measured, a telecentric parallel light source 4 is arranged at the lower part of the optical glass, an industrial camera 1 is arranged right above the optical glass, the industrial camera 1 adopts a telecentric lens 2 and is connected with a computer 5, upper computer software is installed on the computer 5, the industrial camera is fixed through a bracket and is connected with the computer through a usb data line, and pixels of industrial camera shooting are 800-1000 million.
Combine fig. 2 and fig. 3, a tin ball diameter automatic measuring method, the tin ball diameter automatic measuring device who adopts includes optical glass, optical glass is cylindrically, optical glass's up end is used for placing the tin ball 3 that awaits measuring, optical glass's lower part sets up telecentric parallel light source 4, optical glass sets up industry camera 1 directly over, industry camera 1 adopts telecentric lens, industry image connection computer that makes a video recording, install host computer software on the computer, it is fixed that industry camera passes through the support, connect the computer through usb data line, including the following steps:
step a, placing a tin ball on optical glass; a telecentric parallel light source is arranged below the optical glass, and the purpose of using the telecentric light source is to enable the light source to achieve parallel irradiation, so that the projection of the solder ball cannot be distorted due to different positions of the solder ball.
Step b, a telecentric lens collects image information of the solder balls; an industrial camera with 800 ten thousand pixels is arranged above the optical glass, and a telecentric lens is adopted as a lens of the industrial camera, so that the distortion of projected images with different solder ball positions is prevented
And c, the industrial camera transmits the image information to the computer, the computer measures the diameter of the projection of the solder ball in the visual field range according to the image information, and an average value is counted for a producer to refer to.
And the upper computer software is compiled by using HALCON, the diameter and the roundness of each tin ball are obtained by measuring the pixel sum of the projection of each tin ball according to the obtained tin ball projection picture, the average value is counted, and the data is displayed on a software page.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (6)
1. The automatic measuring device for the diameter of the solder ball is characterized by comprising optical glass, wherein the upper end face of the optical glass is used for placing the solder ball, the lower part of the optical glass is provided with a telecentric parallel light source, an industrial camera is arranged right above the optical glass and adopts a telecentric lens, the industrial camera is connected with a computer, and upper computer software is installed on the computer.
2. The automatic solder ball diameter measuring device of claim 1, wherein the optical glass is cylindrical.
3. The automatic measuring device for the diameter of the solder ball as claimed in claim 1, wherein the industrial camera is fixed by a bracket and connected to the computer through a usb data cable.
4. An automatic measuring method of solder ball diameter using the apparatus of any one of claims 1 to 3, comprising the steps of:
step a, placing a tin ball on optical glass;
step b, a telecentric lens collects image information of the solder balls;
and c, the industrial camera transmits the image information to the computer, the computer measures the diameter of the projection of the solder ball in the visual field range according to the image information, and an average value is counted for a producer to refer to.
5. The method of claim 4, wherein the upper computer software is compiled by HALCON, and the diameter and roundness of each solder ball are obtained by measuring the pixel sum of the projection of each solder ball according to the projection picture of the solder ball, and the average value is counted and the data is displayed on the page of the software.
6. The method of claim 4, wherein the number of pixels for industrial camera is 800-1000 ten thousand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011230587.7A CN112325783A (en) | 2020-11-06 | 2020-11-06 | Automatic measuring device and method for diameter of tin ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011230587.7A CN112325783A (en) | 2020-11-06 | 2020-11-06 | Automatic measuring device and method for diameter of tin ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112325783A true CN112325783A (en) | 2021-02-05 |
Family
ID=74315705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011230587.7A Withdrawn CN112325783A (en) | 2020-11-06 | 2020-11-06 | Automatic measuring device and method for diameter of tin ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112325783A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049455A (en) * | 2019-12-26 | 2021-06-29 | 中核北方核燃料元件有限公司 | Cladding fuel particle and nuclear core traceability diameter auxiliary measuring device |
-
2020
- 2020-11-06 CN CN202011230587.7A patent/CN112325783A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049455A (en) * | 2019-12-26 | 2021-06-29 | 中核北方核燃料元件有限公司 | Cladding fuel particle and nuclear core traceability diameter auxiliary measuring device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210205 |