CN112146594A - Online detection device and method for geometric parameters of long round bar on production line - Google Patents
Online detection device and method for geometric parameters of long round bar on production line Download PDFInfo
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- CN112146594A CN112146594A CN202011053256.0A CN202011053256A CN112146594A CN 112146594 A CN112146594 A CN 112146594A CN 202011053256 A CN202011053256 A CN 202011053256A CN 112146594 A CN112146594 A CN 112146594A
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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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness
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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
- G01B11/12—Measuring arrangements characterised by the use of optical techniques for measuring diameters internal diameters
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- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
An online detection device and method for geometric parameters of long and round bars on a production line belong to the technical field of machining. The device comprises an industrial personal computer (1), a diameter measuring instrument (2), a PLC (3), a serial port line (4) and a network cable (5); the industrial personal computer (1) is connected with the diameter measuring instrument (2) through a serial port line (4), and the industrial personal computer (1) is connected with the PLC (5) through a network cable (5); the industrial personal computer (1) sends an instruction to the diameter measuring instrument (2) through the serial port line (4) and receives data from the diameter measuring instrument (2); the industrial personal computer (1) sends unqualified type information to the PLC (3) through the network cable (5), and the PLC (3) carries out subsequent processing. The method has the advantages that the problems of too few manual measurement parameters, too low precision and the like are overcome; convenient use, low cost and easy popularization.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly provides an online detection device and method for geometric parameters of long and round bars on a production line, which are suitable for online detection of the geometric parameters of the long and round bars.
Background
The detection of geometrical parameters of the bar, including diameter, ovality and homonymy difference, is an important ring for quality inspection. At present, the diameter and/or the ovality are mainly realized in a manual or automatic mode, the same offset is mainly measured manually at present, and automatic measurement is rare.
In the aspect of automatic measurement of diameter or ovality, particularly in the occasions requiring higher precision and efficiency, a laser measuring instrument is generally used for measurement, wherein the ovality measurement is generally carried out by using a single-channel diameter measuring instrument to match with the rotation of a workpiece, and the ovality measurement is directly carried out by using a multi-channel diameter measuring instrument without the rotation of the workpiece.
Disclosure of Invention
The invention aims to provide an online detection device and method for geometric parameters of long round bars on a production line. The defects of too few manual measurement parameters and too low precision are overcome; when workpieces enter the measuring instrument, the measured parameters are sent to the upper computer at regular time for calculation, storage and analysis, and whether the workpieces are qualified or not is provided quickly after each workpiece is finished for the PLC to judge and sort. Convenient use, low cost and easy popularization.
The invention aims at the detection requirements of diameter, ellipticity and same offset of a class of long round bars on batch, rapidness, high precision, interruptible measurement process and long-time storage/display/derivation of data, uses a multi-channel high-precision rapid laser measuring instrument as measuring equipment, designs and realizes the online detection of the diameter, the ellipticity and the same offset, and is successfully applied to industrial fields.
As shown in figure 1, the device comprises an industrial personal computer 1, a diameter measuring instrument 2, a PLC3, a serial port line 4 and a network cable 5; the industrial personal computer 1 is connected with the diameter measuring instrument 2 through a serial port line 4, and the industrial personal computer 1 is connected with the PLC3 through a network cable 5; the industrial personal computer 1 sends an instruction to the diameter measuring instrument 2 through the serial port line 4 and receives data from the diameter measuring instrument 2; the industrial personal computer 1 sends unqualified type information to the PLC3 through the network cable 5, and the PLC3 carries out subsequent processing.
The online detection method comprises the following steps:
1 connecting the device and powering up as shown in fig. 1;
2 the interface of the device is shown in fig. 2, by default in "playback" mode; then clicking the upward/downward arrows on the right sides of the measurement number and the branch number to playback the measured data from the database, wherein the measured data comprises the diameter of a single branch/batch of workpieces, the ellipticity of the single branch/batch of workpieces, the maximum/minimum diameter, the ellipticity, the same branch difference, whether the workpieces are qualified or not, the diameter/ellipticity of each section of the workpieces and the qualified information of the whole branch and the same branch difference;
clicking a measurement radio button on a default interface to set a measurement mode, and clicking a new batch radio button or an old batch radio button to set a new batch measurement or an old batch measurement; if the measurement is a new batch measurement, setting the batch number, the destination, the name, the material, the track speed, the specification, the allowable upper deviation, the allowable lower deviation, the ovality upper limit, the same branch difference upper limit, the operator, the shift, the incoming material count and the incoming material weight parameter information of the workpiece; otherwise, directly using the parameters of the latest test batch; dividing the shift into three times, namely a morning shift, a middle shift and a night shift; before pressing a 'measurement and control ending' button, an operator respectively inputs the actually finished count and weight as the operation count and the operation weight;
4, after setting parameters, clicking a 'start measurement and control' button to start a test process, and clicking 'end measurement and control' to end the test process; if the test process needs to be paused, a "pause" button may be pressed; the pause includes two types: firstly, the workpiece is normally suspended and can be suspended only after the current workpiece passes through the diameter measuring instrument; secondly, the fault is suspended, and the suspension can be carried out in the measuring process in order to deal with the track blockage; if the test process needs to be recovered, a 'continue' button needs to be pressed; before pressing the continuation button, ensuring that no workpiece passes through the diameter measuring instrument;
5 passing a batch of long rods through a diameter gauge at speed; typical parameters are: the length of the bar is 3.5-7 m, the diameter is 10-30 mm, the number is 1-400, and the speed is 0.2-0.6 m/s;
6 in the measuring process, the device dynamically collects the information from the serial port of the diameter measuring instrument, and the head, the diameter of each section and the tail of one workpiece are calculated out; dynamically displaying each cross section diameter of each workpiece; calculating and dynamically displaying the ovality of each section, and drawing a curve of the diameter of the workpiece along with the position of the section and a curve of the ovality along with the position of the section; calculating the same-support difference of each workpiece after the measurement of each workpiece is finished, and simultaneously judging whether the same-support difference and the diameters/ovalities of all the sections are qualified or not and displaying; storing input parameters of the workpiece, the diameters of all sections, the maximum/minimum diameter, the maximum ellipticity and the same branch difference of the whole workpiece and qualified information of the workpiece in a database; sending unqualified type information of diameter/ellipticity/same branch difference to the PLC;
after 7 times of measurement are finished, clicking the 'playback' radio button to enter a playback mode; the operation steps of the playback mode refer to step 4.
Drawings
FIG. 1 is a schematic view of the structure of the device of the present invention. Wherein, industrial computer 1, calibrator 2 and PLC3, serial port line 4, net twine 5.
FIG. 2 is a diagram illustrating the effect of the software interface according to the present invention.
Fig. 3 is a flow chart of data acquisition according to the present invention.
FIG. 4 is a flow chart of data analysis according to the present invention.
Detailed Description
The device comprises an industrial personal computer 1, a diameter measuring instrument 2, a PLC3, a serial port line 4 and a network cable 5; the industrial personal computer 1 is connected with the diameter measuring instrument 2 through a serial port line 4, and the industrial personal computer 1 is connected with the PLC3 through a network cable 5; the industrial personal computer 1 sends an instruction to the diameter measuring instrument 2 through the serial port line 4 and receives data from the diameter measuring instrument 2; the industrial personal computer 1 sends unqualified type information to the PLC3 through the network cable 5, and the PLC3 carries out subsequent processing.
The diameter measuring instrument 1 is a ZumBach ODAC 63TRIO three-channel diameter measuring instrument;
the industrial personal computer 2 selects a CPU i 7-77004 core 3.4GHZ, a memory: 8G, hard disk: 256G;
the PLC3 adopts SIMATIC S7-200.
The online detection method comprises the following specific steps:
1 connecting the device and powering up as shown in fig. 1;
2 as shown in fig. 2, clicking the "measure" radio button on the interface of the device sets the measurement mode, and clicking the "old lot" radio button presses the old lot for measurement. At the moment, the workpiece batch number, the destination, the name, the material, the track speed, the specification, the allowable upper deviation, the allowable lower deviation, the ovality upper limit, the same branch difference upper limit, the incoming material branch number and the incoming material weight are the same as those of the latest test batch; inputting an operator as a teacher's team to select a previous team;
4, after setting parameters, clicking a 'start measurement and control' button to start a test process, and clicking 'end measurement and control' to end the test process; if the test process needs to be paused, a "pause" button may be pressed; a pause may be made during the measurement; pressing the "continue" button resumes the testing process; before pressing the continuation button, ensuring that no workpiece passes through the diameter measuring instrument;
5, enabling a batch of long round bars to pass through a diameter measuring instrument at a certain speed; the length is about 4m, the diameter is 14.2mm, the number is 10, and the speed is 0.25 m/s;
and 6, in the measuring process, the device dynamically acquires information from the serial port of the diameter measuring instrument, and the head, the diameter of each section and the tail of one workpiece are calculated. Dynamically displaying the diameter of each section of each workpiece, calculating and dynamically displaying the ovality of each section, drawing a curve of the diameter of each workpiece along with the position of each section and a curve of the ovality along with the position of each section; calculating the same-support difference of each workpiece after the measurement of each workpiece is finished, simultaneously judging whether the same-support difference and the diameters/ellipticities of all the cross sections are out of limit and displaying, and storing input parameters of the workpieces, the diameters of all the cross sections, the maximum/minimum diameter of the whole workpiece, the maximum ellipticity and the same-support difference, out-of-limit information and qualified information of the workpieces into a database;
after 7 times of measurement are finished, clicking the 'playback' radio button to enter a playback mode; the operation of the playback mode refers to step 4.
Claims (3)
1. An online detection device for geometric parameters of long round bars on a production line is characterized by comprising an industrial personal computer (1), a diameter measuring instrument (2), a PLC (3), a serial port line (4) and a network cable (5); the industrial personal computer (1) is connected with the diameter measuring instrument (2) through a serial port line (4), and the industrial personal computer (1) is connected with the PLC (5) through a network cable (5); the industrial personal computer (1) sends an instruction to the diameter measuring instrument (2) through the serial port line (4) and receives data from the diameter measuring instrument (2); the industrial personal computer (1) sends unqualified type information to the PLC (3) through the network cable (5), and the PLC (3) carries out subsequent processing.
2. The on-line detection device for the geometric parameters of the long and round bars on the production line according to claim 1, wherein the diameter measuring instrument (1) is a ZumBach ODAC 63TRIO three-channel diameter measuring instrument, the industrial personal computer (2) is a CPU i 7-77004 core 3.4GHZ, and the internal memory: 8G, hard disk: 256G; the PLC (3) is SIMATIC S7-200.
3. A method for on-line detection of geometric parameters of long and round bars on an assembly line by using the device of the claim is characterized by comprising the following steps:
(1) connecting and powering on the device;
(2) the interface of the device is in "playback" mode by default; then clicking the upward/downward arrows on the right sides of the measurement number and the branch number to playback the measured data from the database, wherein the measured data comprises the diameter of a single branch/batch of workpieces, the ellipticity of the single branch/batch of workpieces, the maximum/minimum diameter, the ellipticity, the same branch difference, whether the workpieces are qualified or not, the diameter/ellipticity of each section of the workpieces and the qualified information of the whole branch and the same branch difference;
(3) clicking a 'measurement' radio button on a default interface to set a measurement mode, and clicking a 'new batch' or 'old batch' radio button to set a new batch measurement or an old batch measurement; the step is new batch measurement, and workpiece batch number, destination, name, material, track speed, specification, allowable upper deviation, allowable lower deviation, ovality upper limit, same branch difference upper limit, operator, shift, incoming material count and incoming material weight parameter information are set; otherwise, directly using the parameters of the latest test batch; dividing the shift into three times, namely a morning shift, a middle shift and a night shift; before pressing a 'measurement and control ending' button, an operator respectively inputs the actually finished count and weight as the operation count and the operation weight;
(4) after the parameters are set, clicking a 'start measurement and control' button to start a test process, and clicking 'end measurement and control' to end the test process; if the test process needs to be paused, a "pause" button may be pressed; the pause includes two types: firstly, the workpiece is normally suspended and can be suspended only after the current workpiece passes through the diameter measuring instrument; secondly, the fault is suspended, and the suspension can be carried out in the measuring process in order to deal with the track blockage; if the test process needs to be recovered, a 'continue' button needs to be pressed; before pressing the continuation button, ensuring that no workpiece passes through the diameter measuring instrument;
(5) running a batch of long rods through a caliper at speed; typical parameters are: the length of the bar is 3.5-7 m, the diameter is 10-30 mm, the number is 1-400, and the speed is 0.2-0.6 m/s;
(6) in the measuring process, the device dynamically acquires information from a serial port of the diameter measuring instrument, and the head, the diameter of each section and the tail of a workpiece are calculated out from the information; dynamically displaying each cross section diameter of each workpiece; calculating and dynamically displaying the ovality of each section, and drawing a curve of the diameter of the workpiece along with the position of the section and a curve of the ovality along with the position of the section; calculating the same-support difference of each workpiece after the measurement of each workpiece is finished, and simultaneously judging whether the same-support difference and the diameters/ovalities of all the sections are qualified or not and displaying; storing input parameters of the workpiece, the diameters of all sections, the maximum/minimum diameter, the maximum ellipticity and the same branch difference of the whole workpiece and qualified information of the workpiece in a database; sending unqualified type information of diameter/ellipticity/same branch difference to the PLC;
(7) after one measurement is finished, clicking the 'playback' radio button to enter a playback mode; the operation step of the playback mode refers to step (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011053256.0A CN112146594A (en) | 2020-09-29 | 2020-09-29 | Online detection device and method for geometric parameters of long round bar on production line |
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| CN202011053256.0A CN112146594A (en) | 2020-09-29 | 2020-09-29 | Online detection device and method for geometric parameters of long round bar on production line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193756A (en) * | 2022-09-16 | 2022-10-18 | 江苏新恒基特种装备股份有限公司 | Elbow ovality qualified detection method and detection system |
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2020
- 2020-09-29 CN CN202011053256.0A patent/CN112146594A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193756A (en) * | 2022-09-16 | 2022-10-18 | 江苏新恒基特种装备股份有限公司 | Elbow ovality qualified detection method and detection system |
| CN115193756B (en) * | 2022-09-16 | 2022-11-22 | 江苏新恒基特种装备股份有限公司 | Elbow ovality qualified detection method and detection system |
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