CN112361975A - Method for detecting diameter of miniature milling cutter of PCB (printed circuit board) - Google Patents
Method for detecting diameter of miniature milling cutter of PCB (printed circuit board) Download PDFInfo
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- CN112361975A CN112361975A CN202011176609.6A CN202011176609A CN112361975A CN 112361975 A CN112361975 A CN 112361975A CN 202011176609 A CN202011176609 A CN 202011176609A CN 112361975 A CN112361975 A CN 112361975A
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- milling cutter
- diameter
- photoelectric switch
- pulse number
- servo motor
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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
- G01B11/10—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving
- G01B11/105—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving using photoelectric detection means
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
A method for detecting the diameter of a miniature milling cutter of a PCB belongs to the field of diameter measurement of miniature milling cutters of PCBs and comprises the following steps: 1) installing a photoelectric switch on the board separator to form a milling cutter diameter detection position area; 2) mounting the milling cutter to be tested on a servo shaft transfer module, horizontally moving the milling cutter through a servo motor and a ball screw, and calculating the moving distance of each pulse milling cutter; 3) driving the milling cutter to be tested to move towards the photoelectric switch; 4) when the milling cutter contacts the photoelectric switch, acquiring data D1 of the current walking pulse number; when the milling cutter leaves the photoelectric switch, the data D2 of the pulse number at the time is obtained again, and the distance change value D3 of the pulse number is obtained by utilizing D2-D1; 5) calculating the diameter of the milling cutter; 6) and comparing the detected diameter of the milling cutter with the diameter of the milling cutter preset by the system. The invention not only ensures the accurate measurement and discrimination of the diameter of the milling cutter, but also can reduce the design complexity and cost of the mechanism and simultaneously improve the convenience of operation.
Description
Technical Field
The invention relates to the technical field of diameter measurement of PCB (printed circuit board) miniature milling cutters, in particular to a method for detecting the diameter of a PCB miniature milling cutter.
Background
The main tool for cutting the PCB in the board separator is a micro milling cutter which is mainly used for cutting and separating the board edges, namely, a large PCB is divided into a plurality of small PCB finished products. As the quality of cutting PCB circuit boards is getting more precise, it is important to cut with a specific size of milling cutter.
In the process of cutting the circuit board, the quality of the PCB circuit board may be affected for a very large number of reasons, of which the most important factor is the accuracy of the milling cutter. Therefore, for the PCB circuit board requiring high precision, the diameter size of the milling cutter needs to be measured in advance.
At present, the commonly used measuring method is manual detection and image identification, the former is a traditional industrial mode, the identification is mainly carried out by naked eyes, and the size of the milling cutter is different from the preset size of a user easily due to manual careless and misplacement; the latter is the automatic measurement function of image identification, and the advantage is that can very convenient carry out accurate measurement to milling cutter diameter, but the shortcoming is, need install camera and identification procedure additional, and mechanism design complexity improves, and the cost is too high, and the operation is very loaded down with trivial details.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for detecting the diameter of a miniature milling cutter of a PCB (printed circuit board), which can ensure the accurate measurement and identification of the diameter of the milling cutter, reduce the design complexity and cost of a mechanism and improve the convenience of operation.
The technical scheme of the invention is to provide a method for detecting the diameter of a PCB micro milling cutter, which comprises the following steps:
1) installing a photoelectric switch on the board separator to form a milling cutter diameter detection position area;
2) the milling cutter to be measured is arranged on a servo shaft transferring module on a board separating machine, the servo shaft transferring module consists of a ball screw and a servo motor, the ball screw is driven by the servo motor to rotate, the milling cutter is horizontally moved, and the following formula is used according to the actual moving distance of the milling cutter and the running pulse number of the servo motor:
calculating the moving distance of each pulse milling cutter;
3) driving the milling cutter to be measured to horizontally move towards the diameter detection position area of the milling cutter through a servo motor and a ball screw;
4) when the milling cutter contacts the photoelectric switch, acquiring data of the current traveling pulse number, and recording the data as data D1; when the milling cutter leaves the photoelectric switch, the pulse number data at the moment is obtained again and recorded as D2, and the distance change value D3 of the pulse number is obtained by utilizing D2-D1;
5) according to the following formula:
calculating the diameter of the milling cutter;
6) and comparing the detected milling cutter diameter with the milling cutter diameter preset by the system, and when the detected milling cutter diameter is not equal to the preset milling cutter diameter, alarming to prompt a user to replace the milling cutter, and when the detected milling cutter diameter is equal to the preset milling cutter diameter, entering a normal cutting program.
By adopting the scheme, compared with the prior art, the method for detecting the diameter of the PCB micro milling cutter has the following advantages: the invention judges whether the diameter of the milling cutter is identical with the diameter size of the milling cutter preset by a user by utilizing the pulse number change value generated between the conduction triggering of the photoelectric switch by utilizing the positioning principle of the ball screw, thereby ensuring the accurate measurement and identification of the diameter of the milling cutter, reducing the design complexity and cost of a mechanism and simultaneously improving the convenience of operation.
Drawings
FIG. 1 is a schematic structural diagram of a milling cutter to be measured mounted on a servo axis transfer module by using the detection method of the present invention;
FIG. 2 is a schematic view of the structure of the milling cutter contacting the photoelectric switch;
fig. 3 is a schematic structural view of the milling cutter when the milling cutter is away from the photoelectric switch.
Detailed Description
The method for detecting the diameter of the micro milling cutter of the PCB is further described in detail with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1, fig. 2 and fig. 3, the method for detecting the diameter of the micro milling cutter of the PCB of the present invention comprises the following steps:
1) a photoelectric switch 11 is arranged on the board separator 10 to form a milling cutter diameter detection position area;
2) the milling cutter 13 to be measured is installed on a servo shaft transferring module 12 on the board dividing machine 10, the servo shaft transferring module 12 is composed of a ball screw 121 and a servo motor, the ball screw 121 is driven to rotate by the servo motor, so that the milling cutter 13 moves horizontally, and according to the actual moving distance of the milling cutter 13 and the running pulse number of the servo motor, the following formula is used:
calculating the moving distance of each pulse milling cutter;
3) driving the milling cutter 13 to be measured to horizontally move to the milling cutter diameter detection position area through a servo motor and a ball screw 121;
4) when the milling cutter 13 contacts the photoelectric switch 11, acquiring data of the current traveling pulse number, and recording the data as data D1; when the milling cutter 13 leaves the photoelectric switch 11, the pulse number data at the moment is obtained again and recorded as D2, and a distance change value D3 of the pulse number is obtained by utilizing D2-D1;
5) according to the following formula:
calculating the diameter of the milling cutter 13;
6) and comparing the detected milling cutter diameter with the milling cutter diameter preset by the system, and when the detected milling cutter diameter is not equal to the preset milling cutter diameter, alarming to prompt a user to replace the milling cutter, and when the detected milling cutter diameter is equal to the preset milling cutter diameter, entering a normal cutting program.
The invention judges whether the diameter of the milling cutter is identical with the diameter size of the milling cutter preset by a user by utilizing the pulse number change value generated between the conduction triggering of the photoelectric switch by utilizing the positioning principle of the ball screw, thereby ensuring the accurate measurement and identification of the diameter of the milling cutter, reducing the design complexity and cost of a mechanism and simultaneously improving the convenience of operation.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art should fall within the protection scope of the present invention without departing from the design spirit of the present invention.
Claims (1)
1. A method for detecting the diameter of a PCB micro milling cutter is characterized by comprising the following steps:
1) a photoelectric switch (11) is arranged on the board separator (10) to form a milling cutter diameter detection position area;
2) the milling cutter (13) to be measured is installed on a servo shaft transfer module (12) on a plate dividing machine (10), the servo shaft transfer module (12) consists of a ball screw (121) and a servo motor, the ball screw (121) is driven to rotate through the servo motor, the milling cutter (13) is horizontally moved, and according to the actual moving distance of the milling cutter (13) and the running pulse number of the servo motor, the following formula is used:
calculating the moving distance of each pulse milling cutter;
3) driving a milling cutter (13) to be measured to horizontally move to a milling cutter diameter detection position area through a servo motor and a ball screw (121);
4) when the milling cutter (13) contacts the photoelectric switch (11), acquiring data of the current traveling pulse number, and recording the data as data D1; when the milling cutter (13) leaves the photoelectric switch (11), the pulse number data at the moment is obtained again and recorded as D2, and a distance change value D3 of the pulse number is obtained by utilizing D2-D1;
5) according to the following formula:
calculating the diameter of the milling cutter (13);
6) and comparing the detected milling cutter diameter with the milling cutter diameter preset by the system, and when the detected milling cutter diameter is not equal to the preset milling cutter diameter, alarming to prompt a user to replace the milling cutter, and when the detected milling cutter diameter is equal to the preset milling cutter diameter, entering a normal cutting program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011176609.6A CN112361975A (en) | 2020-10-28 | 2020-10-28 | Method for detecting diameter of miniature milling cutter of PCB (printed circuit board) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011176609.6A CN112361975A (en) | 2020-10-28 | 2020-10-28 | Method for detecting diameter of miniature milling cutter of PCB (printed circuit board) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112361975A true CN112361975A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011176609.6A Pending CN112361975A (en) | 2020-10-28 | 2020-10-28 | Method for detecting diameter of miniature milling cutter of PCB (printed circuit board) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI768892B (en) * | 2021-05-12 | 2022-06-21 | 和椿科技股份有限公司 | Measurement and calibration system for cutting tool diameter and method thereof |
| CN115060179A (en) * | 2022-03-31 | 2022-09-16 | 苏州维嘉科技股份有限公司 | Tool diameter detection system and method, machining equipment and computer storage medium |
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| CN103808290A (en) * | 2012-11-12 | 2014-05-21 | 博世力士乐(西安)电子传动与控制有限公司 | Knife bench displacement measuring device, frequency converter, control method and rotary cutter |
| CN104227504A (en) * | 2014-09-22 | 2014-12-24 | 苏州科技学院 | Novel measurement method for dynamic characteristic of tool nose of micro-diameter milling tool |
| CN205904781U (en) * | 2016-07-18 | 2017-01-25 | 大族激光科技产业集团股份有限公司 | Digit control machine tool cutter measurement system |
| CN111208781A (en) * | 2020-01-16 | 2020-05-29 | 深圳市高川自动化技术有限公司 | Circuit for measuring diameter of tool in motion |
| CN111693007A (en) * | 2020-07-14 | 2020-09-22 | 中石化石油机械股份有限公司沙市钢管分公司 | Self-adaptive real-time length measuring device and calculation method for spiral welded pipe cutting |
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2020
- 2020-10-28 CN CN202011176609.6A patent/CN112361975A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808290A (en) * | 2012-11-12 | 2014-05-21 | 博世力士乐(西安)电子传动与控制有限公司 | Knife bench displacement measuring device, frequency converter, control method and rotary cutter |
| CN104227504A (en) * | 2014-09-22 | 2014-12-24 | 苏州科技学院 | Novel measurement method for dynamic characteristic of tool nose of micro-diameter milling tool |
| CN205904781U (en) * | 2016-07-18 | 2017-01-25 | 大族激光科技产业集团股份有限公司 | Digit control machine tool cutter measurement system |
| CN111208781A (en) * | 2020-01-16 | 2020-05-29 | 深圳市高川自动化技术有限公司 | Circuit for measuring diameter of tool in motion |
| CN111693007A (en) * | 2020-07-14 | 2020-09-22 | 中石化石油机械股份有限公司沙市钢管分公司 | Self-adaptive real-time length measuring device and calculation method for spiral welded pipe cutting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI768892B (en) * | 2021-05-12 | 2022-06-21 | 和椿科技股份有限公司 | Measurement and calibration system for cutting tool diameter and method thereof |
| CN115060179A (en) * | 2022-03-31 | 2022-09-16 | 苏州维嘉科技股份有限公司 | Tool diameter detection system and method, machining equipment and computer storage medium |
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Application publication date: 20210212 |