CN110926382A - Plane detection device - Google Patents
Plane detection device Download PDFInfo
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- CN110926382A CN110926382A CN201911354742.3A CN201911354742A CN110926382A CN 110926382 A CN110926382 A CN 110926382A CN 201911354742 A CN201911354742 A CN 201911354742A CN 110926382 A CN110926382 A CN 110926382A
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- probe
- electromagnet
- limiting frame
- spacing
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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
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
- G01B11/303—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces using photoelectric detection means
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- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a plane detection device which comprises a back plate, an electromagnet, a cross beam, a probe and a limiting frame, wherein the limiting frame and the electromagnet are arranged on the back plate in parallel, the cross beam is positioned above the limiting frame and the electromagnet, the probe vertically penetrates through the cross beam and the limiting frame, a spring is arranged between the cross beam and the electromagnet, and the spring can be compressed or stretched in the vertical direction through a guide piece. The flatness detection device can finish flatness detection tasks of various bottom plates with high precision, low energy consumption and high reliability, is particularly suitable for various numerical control equipment such as a 3D printer and the like, and can finish the detection tasks with high precision; the probe can be kept in the accommodating state without consuming power, and has no noise, no heat generation and no electromagnetic interference to the numerical control equipment.
Description
Technical Field
The invention relates to the technical field of plane detection, in particular to a plane detection device.
Background
The printing effect of the 3D printing equipment is very dependent on the flatness of the printing bottom plate, and the flatness of the printing bottom plate determines whether printing is successful or not to a great extent. Software modification requires detection means with extremely high accuracy. The precision of the existing mechanical touch sensor in the market can not meet the increasingly-selected customer requirements, and the active platform self-leveling is difficult to realize and is rarely adopted by printer manufacturers due to high cost.
Other mechanisms on the market are always in the state of containing the electromagnet, overcome spring force and pack up the probe, have noise, are all unfavorable for the machine, the life-span of spring, and influence precision and reliability after long-time work.
Disclosure of Invention
The invention aims to provide a plane detection device, which solves the problems in the prior art, ensures that the resetting of a probe does not consume electric power and generate heat, has no electromagnetic interference and noise, and improves the precision and the reliability.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a plane detection device which comprises a back plate, an electromagnet, a cross beam, a probe and a limiting frame, wherein the limiting frame and the electromagnet are arranged on the back plate in parallel, the cross beam is positioned above the limiting frame and the electromagnet, the probe vertically penetrates through the cross beam and the limiting frame, a spring is arranged between the cross beam and the electromagnet, and the spring can be compressed or stretched in the vertical direction through a guide piece.
Preferably, a circuit board is arranged among the limiting frame, the electromagnet and the back plate, and the circuit board is connected with a controller.
Preferably, a photoelectric sensor is arranged on the circuit board, a light through hole is formed in the probe, light of the photoelectric sensor can penetrate through the light through hole, and the photoelectric sensor and the electromagnet are electrically connected with the controller respectively.
Preferably, a groove is formed in the middle upper portion of the limiting frame, and the photoelectric sensor is located in the groove.
Preferably, a sliding groove is formed in the lower end of the probe, a bolt is arranged below the limiting frame, and the bolt can slide in the sliding groove.
Preferably, the backplate is the sheet metal component, the middle part of sheet metal component is sunken and is provided with spacing with the electro-magnet, spacing with through bolt fixed connection between the electro-magnet, be equipped with the connecting hole on the both sides of sheet metal component.
Preferably, the guide is a screw rod, and the screw rod penetrates through the cross beam, the spring and the electromagnet.
Preferably, the cross beam is connected with the limiting frame through a positioning pin.
Compared with the prior art, the invention has the following technical effects:
the flatness detection device can finish flatness detection tasks of various bottom plates with high precision, low energy consumption and high reliability, is particularly suitable for various numerical control equipment such as a 3D printer and the like, and can finish the detection tasks with high precision; the probe can be kept in the accommodating state without consuming power, and has no noise, no heat generation and no electromagnetic interference to the numerical control equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a plane detection apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of the flat panel detector of the present invention during detection;
FIG. 3 is a schematic structural view of the flat panel detector of the present invention during reset;
FIG. 4 is a schematic structural diagram of a probe of the flat panel detector of the present invention;
wherein: the device comprises a beam 1, an electromagnet 2, a probe 3, a limiting frame 4, a photoelectric sensor 5, a back plate 6, a circuit board 7, a positioning pin 8, a data wiring board 9, a spring 10, a light through hole 11, a chute 12 and a screw 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a plane detection device, which solves the problems in the prior art, ensures that the resetting of a probe does not consume electric power and generate heat, does not have electromagnetic interference and noise, and improves the precision and the reliability.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 4: the embodiment provides a plane detection device, including backplate 6, electro-magnet 2, crossbeam 1, probe 3 and spacing 4, spacing 4 and electro-magnet 2 set up side by side on backplate 6, and crossbeam 1 is located spacing 4 and electro-magnet 2's top, and probe 3 is vertical to run through on crossbeam 1 and spacing 4, is provided with a spring 10 between crossbeam 1 and the electro-magnet 2, and spring 10 can follow vertical direction compression or tensile through a guide. The back plate 6 of the embodiment is a sheet metal part, the middle part of the sheet metal part is sunken and is provided with the limiting frame 4 and the electromagnet 2, the limiting frame 4 and the electromagnet 2 are fixedly connected through bolts, and connecting holes are formed in two sides of the sheet metal part; the guide piece is a screw 13 which penetrates through the cross beam 1, the spring 10 and the electromagnet 2 and can limit the vertical movement of the electromagnet 2; the probe 3 may be fixed to the beam 1.
A circuit board 7 is arranged among the limiting frame 4, the electromagnet 2 and the back plate 6, and the circuit board 7 is connected with a controller through a data wiring board 9. The circuit board 7 is provided with a photoelectric sensor 5, the probe 3 is provided with a light through hole 11, light of the photoelectric sensor 5 can penetrate through the light through hole 11, and the photoelectric sensor 5 and the electromagnet 2 are respectively electrically connected with the controller. The middle upper part of the limiting frame 4 is provided with a groove, and the photoelectric sensor 5 is positioned in the groove. The two ends of the photoelectric sensor 5 are positioned on the two sides of the probe 3 and do not have direct contact, the sensor and the probe 3 do not have mechanical abrasion in the whole detection process, the device is quiet and noiseless, the service life of the probe 3 is prolonged, and the reliability is excellent.
The crossbeam 1 is connected with the limiting frame 4 through a positioning pin 7 and used for limiting the moving direction of the crossbeam 1. The lower end of the probe 3 is provided with a sliding groove 12, and a bolt is arranged below the limiting frame 4 and can slide in the sliding groove 12. The moving direction of the probe 3 is limited by the positioning pin 7 and the sliding groove 12, so that the axial displacement precision of the probe 3 is improved, and the positioning precision can reach 6-10 um.
In this embodiment, the use of the 3D printer is taken as an example, and the specific working process and the flatness detection principle are as follows:
before printing begins, a controller of the printer controls the electromagnet 2 to be electrified, the electromagnet 2 is attracted with the beam 1, the probe 3 moves downwards to the lowest point, and plane detection of any multiple points is carried out. After the plane detection is finished, the electromagnetic magnet 2 works instantly to lift the beam 1 and drive the probe 3 to lift, the beam 1 is kept by the elasticity of the spring 10, and the probe 3 is kept at a high position and does not interfere with the printing process.
When the detection is started, the controller of the printer sends motor pulses at specific intervals to control the detection device to descend. When the light through hole 11 on the probe 3 moves to the middle of the photoelectric sensor 5, the signal of the photoelectric sensor 5 can be successfully transmitted, i.e. the photoelectric sensor 5 is triggered once. When the probe 3 continuously moves downwards to contact with a detection plane, the light through hole 11 of the probe 3 is pushed away from the sensing area of the photoelectric sensor, and then a signal is immediately sent to the controller and the number of actuated pulses is recorded; in a similar way, when the probe 3 moves upwards after contacting the detection plane and the light through hole 11 of the probe 3 moves to the middle of the photoelectric sensor 5, the photoelectric sensor 5 sends a signal to the controller and records the number of actuated pulses. Therefore, the reciprocating displacement of the photoelectric sensor 5 triggered twice in the reciprocating motion of the probe 3 can be calculated, the reciprocating displacement can be converted into the displacement of the Z-axis motion, the height detection of a plurality of plane detection points is sequentially carried out according to a set program, and the flatness of the whole plane can be calculated. Normally, the height of the first detection point is not recorded as data, but only as a plane zero reference, and the relative height is subsequently detected in comparison with this reference. For example:
assuming that a is a reference zero point, the distance corresponding to each motor motion pulse is 0.01 mm. The heights of the points B and C are measured, and the specific steps are as follows:
the controller sends 100 motor pulses at intervals of 0.01s to control the whole device to move upwards, namely the probe moves to a position 1mm above the point A; translating the whole device to the position above the point B, and sending 200 motor pulses at intervals of 0.01s by the controller to control the whole device to move downwards until a probe triggers a signal; triggered and recorded when 50 pulses are sent, this zone height is +0.5mm relative to datum a; the controller sends 50 motor pulses at intervals of 0.01s to control the whole device to move upwards, and the probe moves to a position 0.5mm above the point B (namely, a position 1mm above the point A); translating the whole device to the position above the point C, and sending 200 motor pulses at intervals of 0.01s by the controller to control the whole device to move downwards until a probe triggers a signal; triggered and recorded when sent to 120 pulses, this area height is-0.2 mm relative to reference point a. The result of the detection is 0mm, 0.5mm, 0.2 mm.
By analogy, the gridding height of the whole plane can be established, the flatness condition of the whole plane is further calculated, and the more points are taken, the denser the points are, the more accurate the actual condition of the plane can be reflected.
The flatness detection device of the embodiment can complete flatness detection tasks of various bottom plates with high precision and low energy consumption, and is particularly suitable for various numerical control devices such as 3D printers. The probe 3 of the present embodiment does not require power consumption to maintain the housed state, does not generate noise or heat, and does not have electromagnetic interference with the printer.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A planar detection apparatus, characterized in that: including backplate, electro-magnet, crossbeam, probe and spacing, spacing with the electro-magnet set up side by side in on the backplate, the crossbeam is located spacing with the top of electro-magnet, the probe vertically runs through the crossbeam with on the spacing, the crossbeam with be provided with a spring between the electro-magnet, the spring can follow vertical direction compression or tensile through a guide.
2. The planar detection apparatus according to claim 1, wherein: a circuit board is arranged among the limiting frame, the electromagnet and the back plate, and a controller is connected to the circuit board.
3. The planar detection apparatus according to claim 2, wherein: the circuit board is provided with a photoelectric sensor, the probe is provided with a light through hole, light of the photoelectric sensor can penetrate through the light through hole, and the photoelectric sensor and the electromagnet are respectively electrically connected with the controller.
4. A flat panel detector apparatus according to claim 3, wherein: a groove is formed in the middle upper portion of the limiting frame, and the photoelectric sensor is located in the groove.
5. The planar detection apparatus according to claim 1, wherein: the lower end of the probe is provided with a sliding groove, a bolt is arranged below the limiting frame, and the bolt can slide in the sliding groove.
6. The planar detection apparatus according to claim 1, wherein: the backplate is the sheet metal component, the middle part of sheet metal component is sunken and is provided with spacing with the electro-magnet, spacing with through bolt fixed connection between the electro-magnet, be equipped with the connecting hole on the both sides of sheet metal component.
7. The planar detection apparatus according to claim 1, wherein: the guide piece is a screw rod, and the screw rod penetrates through the cross beam, the spring and the electromagnet.
8. The planar detection apparatus according to claim 1, wherein: the crossbeam with spacing passes through a locating pin and connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/801,408 US11493333B2 (en) | 2019-12-06 | 2020-02-26 | Flatness detection device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911254174X | 2019-12-06 | ||
| CN201911254174 | 2019-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110926382A true CN110926382A (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911354742.3A Pending CN110926382A (en) | 2019-12-06 | 2019-12-25 | Plane detection device |
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| CN (1) | CN110926382A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622109A (en) * | 2020-04-23 | 2020-09-04 | 中铁十六局集团有限公司 | Auxiliary appliance for measuring adjustment elevation of segmental beam and beam segment |
| CN114643786A (en) * | 2020-12-17 | 2022-06-21 | 深圳市润天智数字设备股份有限公司 | Automatic measuring device for flatness of printing platform and printer |
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| CN104550041A (en) * | 2014-12-22 | 2015-04-29 | 常州安一智能科技有限公司 | Automatic testing device |
| CN206131974U (en) * | 2016-08-16 | 2017-04-26 | 王宝全 | Contact position sensor , Size measurement device and position detecting device |
| CN106767430A (en) * | 2016-12-06 | 2017-05-31 | 苏州博众精工科技有限公司 | A kind of device of contact type measurement segment difference |
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2019
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Patent Citations (5)
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| FR2268260A1 (en) * | 1974-04-17 | 1975-11-14 | Stien Georges | Torquemeter and angular speed transducer - has electromagnetic brake and Hall effect probe detecting magnetic pulses |
| WO1999051966A1 (en) * | 1998-04-07 | 1999-10-14 | S.D. Warren Services Company | Devices and methods for testing tack uniformity of a coating on a substrate |
| CN104550041A (en) * | 2014-12-22 | 2015-04-29 | 常州安一智能科技有限公司 | Automatic testing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622109A (en) * | 2020-04-23 | 2020-09-04 | 中铁十六局集团有限公司 | Auxiliary appliance for measuring adjustment elevation of segmental beam and beam segment |
| CN114643786A (en) * | 2020-12-17 | 2022-06-21 | 深圳市润天智数字设备股份有限公司 | Automatic measuring device for flatness of printing platform and printer |
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Application publication date: 20200327 |
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