CN106767370A - A kind of plate thickness and flatness automatic detection device - Google Patents
A kind of plate thickness and flatness automatic detection device Download PDFInfo
- Publication number
- CN106767370A CN106767370A CN201510834381.8A CN201510834381A CN106767370A CN 106767370 A CN106767370 A CN 106767370A CN 201510834381 A CN201510834381 A CN 201510834381A CN 106767370 A CN106767370 A CN 106767370A
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- detection
- charging tray
- detection platform
- test probe
- plate thickness
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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
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
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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
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
With vortex induction technique, invent and have developed a kind of plate thickness and flatness automatic detection device.The device can realize the online automatic detection to metal sheet type parts thickness and flatness, with accuracy of detection is high, simple structure, it is easy to operate, without the series of advantages such as be accurately positioned to measured piece.Economic benefit very high is generated in production application.
Description
Technical field
The present invention relates to a kind of detection means, more particularly to a kind of plate thickness and flatness automatic detection device.
Background technology
The thickness and flatness of the flat-type part such as metal saw blade are the technical indicators of weight, it is necessary to carry out accurate measurement and control to it.In recent years, people have carried out numerous studies work to measurement of planeness technology and measurement apparatus, current manufacturing enterprise frequently with thickness and flatness checking device mainly have laser testing instrument, three-dimensional coordinate tester or micrometer.Laser type measuring instrument is expensive；Three-dimensional coordinate tester complex operation, cannot typically carry out fully-automated synthesis, and test speed is extremely slow, high cost, it is difficult to popularize；The human error of manual testing's method is larger, and there is considerable restraint the operation area that micrometer is measured in itself, it is difficult to which large-scale part central area is measured, furthermore manual measurement can only detect the thickness of part, it is impossible to detect flatness.Above-mentioned thickness and flatness checking device are general in detection to require that measured piece surface is clean and tidy, and requires the positioning datum with degree of precision.
The high frequency magnetic field that high frequency ac signal is produced in coil acts on metal sheet surface thin layer, and vortex is produced in this thin layer, and the vortex produces alternating flux, and causes that the magnetic flux in coil changes and causes self-inductance to change, and induced potential is produced in coil.Inductance will become with the power of vortex, and strength of vortex is apart from x between coil and metallic plate with changing, therefore the change of displacement can be measured with reflective high frequency eddy current sensor.
The content of the invention
The invention aims to realize the online automatic detection to metal sheet type parts thickness and flatness, a kind of plate thickness and flatness automatic detection device are devised.
The technical solution adopted for the present invention to solve the technical problems is：
Plate thickness and flatness automatic detection device are most of by organic frame 3, feed mechanism, discharging mechanism, testing agency and control circuit five.Frame 3 is used for branch support sending/discharging mechanism, detection platform and operating display etc..Give/discharging mechanism is that tested part is transported into detection platform, it is to be detected finish after, and part is removed from detection platform, complete a detection circulation.Testing agency includes detection platform, probe etc., and detection platform is mainly used to place tested part, and in detection with certain speed transverse shifting, the lengthwise movement with probe coordinates, and realizes the detection to whole part plane.Control circuit is used for ensureing the coordinated movement of various economic factors between each mechanism of detection means, to realize automatic detection function.
Described feed mechanism mainly includes：Feeding cylinder, input charging tray, input charging tray axle, charging tray frame, bearing etc..Input charging tray is fixed on charging tray axle, and charging tray axle can be slided in the guide runner of charging tray frame, to drive charging tray to realize that feeding is acted.Feeding cylinder is fixed on bearing, is connected with charging tray frame, and charging tray frame can be driven to move up and down.The structure of discharging mechanism is essentially identical with feed mechanism.
Described detection platform includes detection crossbeam, detection beam guideway, detection platform base, detection platform guide rail, testing stand, motor, the lead screw pair of X-direction, upper test probe, lower test probe and Y direction ball screw framework.X-direction is provided with two parallel guide rails in detection platform, two detection crossbeams being parallel to each other are configured with along Y direction on guide rail, the distance of two detection crossbeams can be adjusted according to the size of tested part appearance and size.The cantilever of test probe is provided with testing stand, drives test probe to move back and forth in X direction in the presence of lead screw pair.Lower test probe is fixed on the testing stand of detection below the crossbeam, upper and lower test probe is connected with measuring circuit respectively, set below detection platform base along the ball screw framework of Y direction, to realize that detection body panel drives tested part reciprocating along Y direction.
Described measuring circuit is made up of five parts, i.e. analog input, digital input, motor control board, CPLD expansion board and master control borad.
The beneficial effects of the invention are as follows：
The device realizes the detection of sheet metal thickness and flatness using vortex induction principle, can effectively remove the interference of the moisture and other nonmetal impurities on measured piece, without being accurately positioned to measured piece during detection, and can carry out online automatic detection.The characteristics of taking full advantage of electromechanical integration technology, simple structure, operation and maintenance is convenient, slightly improves the detection that just can be used for other sheet metal appearance and sizes, it is easy to popularization and application.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is detection means overall plan figure.
Fig. 2 is measuring circuit figure.
Wherein, 1- feed mechanisms, 2- testing agencies, 3- frames, 4- discharging mechanisms.
Specific embodiment
As shown in figure 1, plate thickness and flatness automatic detection device are most of by organic frame 3, feed mechanism 1, discharging mechanism 4, testing agency 2 and control circuit five.Frame 3 is used for branch support sending/discharging mechanism, detection platform and operating display etc..Give/discharging mechanism is that tested part is transported into detection platform, it is to be detected finish after, and part is removed from detection platform, complete a detection circulation.Testing agency 2 includes detection platform, probe etc., and detection platform is mainly used to place tested part, and in detection with certain speed transverse shifting, the lengthwise movement with probe coordinates, and realizes the detection to whole part plane.Control circuit is used for ensureing the coordinated movement of various economic factors between each mechanism of detection means, to realize automatic detection function.Test probe influences the degree of strength in magnetic field in probe to the distance on measured piece surface, and then change the output voltage of probe, measuring circuit enters CPU after output voltage is converted into data signal, certain mathematical operation is carried out by CPU, the distance of respective points to measured piece surface of popping one's head in up and down is respectively obtained.The thickness of measured piece is to be equal to the distance between two probes to subtract upper and lower two measurement distance sums；And the flatness of measured piece is the same face multiple test point（The design uses 196 points）Maximum and minimum range between difference.For test result approaching to reality value as much as possible, the running orbit of upper probe is " S " font, so that test point is uniformly distributed in measured piece surface.Feed mechanism 1 mainly includes：Feeding cylinder, input charging tray, input charging tray axle, charging tray frame, bearing etc..Input charging tray is fixed on charging tray axle, and charging tray axle can be slided in the guide runner of charging tray frame, to drive charging tray to realize that feeding is acted.Feeding cylinder is fixed on bearing, is connected with charging tray frame, and charging tray frame can be driven to move up and down.The structure of discharging mechanism 4 is essentially identical with feed mechanism 1, repeats no more here.Give, the operation principle of discharging mechanism：Measured piece is placed on input charging tray, feeding cylinder drives charging tray frame and charging tray to rise, measured piece is in high-order (higher than detection crossbeam)；Then charging tray axle is slided in charging tray frame, and measured piece is sent to the top of detection crossbeam；Now, feeding cylinder declines, and measured piece is placed on detection crossbeam and is detected, while charging tray axle drives input charging tray to reset to the left, waits subsequent work circulation.After detection is finished, output charging tray moves to the lower section of measured piece, and discharging cylinder rises, and measured piece is held up by exporting charging tray, is moved right under the drive of output charging tray axle, takes measured piece away, completes a detection circulation.
As shown in Fig. 2 the present apparatus carries out non-contact detection, upper and lower test probe using eddy current sensor principle（Part both sides to be measured are located at respectively）It is connected with measuring circuit.Measuring circuit is made up of five parts, i.e. analog input；Digital input：Motor control board；CPLD expansion board and master control borad.Wherein analog input is made up of two-way input channel, and upper and lower test probe is corresponded to respectively, and from 12 A/D chips TLC2543 of precision as sampling A/D chip, measuring accuracy can reach 1/1024mm, about 1 μm；Digital input is made up of 20 road input circuits, and often road is all made up of optocoupler and hardware filtering circuit with buffer action, and also has digital filtering function after entrance CPLD, so as to the influence for effectively preventing equipment from shaking；Motor control board controls No. 4 stepper motors and all the way servomotor, product to use servomotor and No. 3 therein stepper motor, and another road stepper motor is reserved, and motor driving part point is by light-coupled isolation；CPLD expansion board is substantially carried out digital circuit input and motor-driven digital operation, and LED shows and keyboard scan etc.；Master control borad is made up of LCD drive circuits, non-volatile storage, power supply, RS232 and Master control chip.Main control chip is C8051F series, is the core control portions of whole system.
Claims (4)
1. a kind of plate thickness and flatness automatic detection device, most of by organic frame, feed mechanism, discharging mechanism, testing agency and control circuit five；Frame is used for branch support sending/discharging mechanism, detection platform and operating display etc.；Give/discharging mechanism is that tested part is transported into detection platform, it is to be detected finish after, part is removed from detection platform again, complete a detection circulation, testing agency includes detection platform, probe etc., and detection platform is mainly used to place tested part, and in detection with certain speed transverse shifting, lengthwise movement with probe coordinates, and realizes the detection to whole part plane；Control circuit is used for ensureing the coordinated movement of various economic factors between each mechanism of detection means, to realize automatic detection function.
2. plate thickness according to claim 1 and flatness automatic detection device, it is characterized in that described feed mechanism mainly includes：Feeding cylinder, input charging tray, input charging tray axle, charging tray frame, bearing etc., input charging tray is fixed on charging tray axle, and charging tray axle can be slided in the guide runner of charging tray frame, to drive charging tray to realize that feeding is acted；Feeding cylinder is fixed on bearing, is connected with charging tray frame, and charging tray frame can be driven to move up and down；The structure of discharging mechanism is essentially identical with feed mechanism.
3. plate thickness according to claim 1 and flatness automatic detection device, it is characterized in that described detection platform includes detection crossbeam, detection beam guideway, detection platform base, detection platform guide rail, testing stand, motor, the lead screw pair of X-direction, upper test probe, lower test probe and Y direction ball screw framework；X-direction is provided with two parallel guide rails in detection platform, two detection crossbeams being parallel to each other are configured with along Y direction on guide rail, the distance of two detection crossbeams can be adjusted according to the size of tested part appearance and size；The cantilever of test probe is provided with testing stand, drives test probe to move back and forth in X direction in the presence of lead screw pair；Lower test probe is fixed on the testing stand of detection below the crossbeam, upper and lower test probe is connected with measuring circuit respectively, set below detection platform base along the ball screw framework of Y direction, to realize that detection body panel drives tested part reciprocating along Y direction.
4. plate thickness according to claim 1 and flatness automatic detection device, it is characterized in that described measuring circuit is made up of five parts, i.e. analog input, digital input, motor control board, CPLD expansion board and master control borad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510834381.8A CN106767370A (en) | 2015-11-25 | 2015-11-25 | A kind of plate thickness and flatness automatic detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510834381.8A CN106767370A (en) | 2015-11-25 | 2015-11-25 | A kind of plate thickness and flatness automatic detection device |
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| CN106767370A true CN106767370A (en) | 2017-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780652A (en) * | 2020-08-13 | 2020-10-16 | 佘峰 | Circuit board production and processing quality detection device |
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- 2015-11-25 CN CN201510834381.8A patent/CN106767370A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780652A (en) * | 2020-08-13 | 2020-10-16 | 佘峰 | Circuit board production and processing quality detection device |
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Application publication date: 20170531 |