DE202021004240U1 - Universal fast video meter - Google Patents

Abstract

Universal high-speed video measuring device, comprising a main objective (1) that can be lifted, a movement platform (2) being arranged outside the field of view of the main objective (1), and a microscopic measuring component being arranged on one side of the main objective (1), and with the other Side of the main lens (1) a measuring light source (3) is connected by a lifting component.

Description

TECHNICAL AREA

The present invention relates to a high-speed video measuring device, in particular to a universal high-speed video measuring device.

STATE OF THE ART

The high-speed video measuring device is a high-speed measuring mechanism that uses a telecentric lens with a large field of view and depth of field to reduce the image of the product outline to 10 times and forward it to a high-resolution camera for digital processing, then the back-end measuring software with powerful calculation functions captures the image Product Outline and completes the calculation to measure the dimensions of the product outline. This measurement method is widely used in various fields such as machinery, electronics, cables and clocks due to its high measurement speed and high degree of automation. However, increasing the field of view of the lens will lead to a decrease in the resolution of the captured image in a small area, so each group of telecentric lens has a corresponding measurement range, if the size of the workpiece is too large or too small, a problem will arise that the image cannot be fully captured or the image is displayed unclearly; and even a dual field of view telecentric lens with different field of view range, the measurement range is generally only 10-100mm, which can not cover the entire measurement range.

On the other hand, since the metering range of telecentric lenses and their price correspond exponentially with each other, i.e. the price of telecentric lenses becomes several times or even ten times higher with increasing metering range, so it is impossible for manufacturers to directly select the model to cover a wide range to carry out dimensional measurements. And the current high-speed video meter is generally highly integrated and compact, which leads manufacturers to add lenses with different metering ranges directly to the existing high-speed video meter, which leads to the increase in the size of the high-speed video meter and the alienation of the shape of the high-speed video meter, which not only makes it difficult to handle and store, but the built-in lens is also prone to damage from external impact due to its protruding position, affecting the stability of the high-speed video meter.

Also, during the measurement by the high-speed video measuring device, an illuminating light source needs to be placed at the top and bottom of the workpiece so that the workpiece can be clearly illuminated to show subtle local features and complete sharp contour lines. However, for some workpieces that are alien in shape or have steps in height, the lower light source cannot fully illuminate the edges of the workpiece because some of the contour lines of such workpieces are covered by other parts of the workpiece; and the lens is only illuminated by the upper light source, therefore it is possible to confuse the contour lines of the workpiece with other planes below, so that the high-speed video measuring device is unable to distinguish them and complete the recognition, thereby reducing the recognition effect of the workpiece is deteriorated.

Because of this, the existing high-speed video measuring devices have problems with a small measurement range, high production cost, and poor measurement efficiency.

CONTENT OF THE PRESENT INVENTION

The purpose of the present invention is to provide a universal fast video measuring device. The present invention has the characteristics of wide measurement range, low production cost and good measurement effect. The technical solution of the present invention consists in: a universal high-speed video measuring device, comprising a liftable main lens, with a camera connected to the outside of the main lens, and with a movement platform being arranged outside the field of view of the main lens, and with on one side of the main lens a microscopic measuring component is arranged, and wherein a measuring light source is connected to the other side of the main objective through a lifting component.

In an above universal high-speed video measuring device, the main lens is a dual field of view lens, with the exterior of the dual field of view lens having a large field of view camera and a small field of view camera connected respectively, and the large field of view camera and the camera with a small field of view are connected to the main lens by 90° vertically.

In a universal high-speed video measuring device above, the microscopic measuring component comprises a liftable zoom lens, and a loading platform is arranged on the outside of the zoom lens.

In an above universal high-speed video measuring device, the lifting component comprises a drum, which is located on the side of the main objective remote from the microscopic measuring component, and with which drum a lifting rod is slidably connected, and wherein the lifting rod has the shape of a round tube, and with a drive part is connected to one side of the lifting bar, and a measuring light source is connected to the bottom of the lifting bar.

In a universal high-speed video measuring device above, the driving part is a spindle motor or a linear slide.

In an above universal high-speed video measuring device, the moving platform includes an X-axis moving platform, and the X-axis moving platform is connected to a Y-axis moving platform via a first guide rail, and the exterior of the Y-axis moving platform is a first moving part is connected, and wherein the X-axis moving platform and the first moving part are juxtaposed in the horizontal direction; and wherein the X-axis moving platform is provided with a second guide rail, and wherein the second guide rail is arranged perpendicularly to the first guide rail on the X-axis moving platform, and a second movable part is arranged on the outside of the second guide rail.

In a universal high-speed video measuring device above, the first moving part and the second moving part have the same structure and each comprise a spindle motor to which a spindle slider is connected, the spindle slider of the first moving part being connected to the Y-axis moving stage and the spindle slider of the second moving part is connected to the X-axis moving platform.

In a universal high-speed video measuring device above, the spindle motor is a linear spindle motor.

In an above universal high-speed video measuring device, the first guide rail is arranged side by side on the left and right sides of the X-axis moving platform, and the second guide rail is arranged side by side on the front and rear sides of the X-axis moving platform.

In an above universal high-speed video measuring device, the first moving part is connected to the first guide rail on one side.

In a universal high-speed video measuring device above, the first guide rail and the second guide rail are each a cross roller guide rail.

In the above universal high-speed video measuring device, the lower ends of the first movable part and the second movable part are each provided with a grating scale.

In the above universal high-speed video measuring device, the measurement light source includes a first illumination light source and a second illumination light source juxtaposed along the height direction, and the first illumination light source emits oblique light and the second illumination light source emits parallel light.

In an above universal high-speed video measuring device, a case is connected to the outsides of the first illumination light source and the second illumination light source, and the first illumination light source and the second illumination light source are annularly distributed on the inner wall of the case.

In an above universal high-speed video measuring device, the housing is provided with a cover plate, which is located outside of the second illumination light source, the edge of the cover plate extends to the end portion of the second illumination light source, the first illumination light source is located on the inside of the cover plate in the horizontal direction.

In the above universal high-speed video measuring device, the first illumination light source consists of a plurality of first illumination portions, and the second illumination light source consists of a plurality of second illumination portions.

In a universal high-speed video measuring device above, it further comprises a backlight source, which is located on a side of the motion platform facing away from the measurement light source, and wherein the backlight source, the first illumination light source and the second illumination light source are each connected to a dimming controller, and the first illumination subarea and the second lighting portion are each connected to a control module.

In an above universal fast video measuring device, a navigation camera is arranged above the movement platform, and the field of view of the navigation camera is Outside of the field of view of the main lens extends.

1. (1) die vorliegende Erfindung ist in der Lage, Werkstücke unterschiedlicher Größe in drei Sätzen von Messbereichen jeweils durch die Zusammenarbeit des Hauptobjektivs und der mikroskopischen Messkomponente zu messen, und unter Verwendung des Zoomobjektivs das durch die große Schärfentiefe bewirkte Problem des Doppel-Sichtfeld-Objektivs mit der unklaren Erkennung von kleinen Werkstücken zu lösen, um den Messbereich wirksam um 0,1 bis 100 mm zu erweitern;
2. (2) durch die strukturelle Zusammenarbeit der Hebekomponente wird die Messlichtquelle gestützt und gehoben, so dass die Trommel die Hebestange in der vertikalen Richtung begrenzen kann, mit der Trommel wird das Kippen der Hebestange, nachdem er mit der Schwerkraft der Messlichtquelle belastet war, vermieden; durch die runde röhrenförmige Hebestange kann in den vertikalen Zustand die Messlichtquelle stabil begrenzt werden, so dass die Messlichtquelle nicht aufgrund der Verschiebung des Schwerpunkts gekippt wird; mit der oben genannten Zusammenarbeit benötigt die vorliegende Erfindung nur die Hebekomponente auf einer einzelnen Seite, um die Messlichtquelle zu stützen und zum Heben und Senken anzutreiben, wodurch der von der anderen Seite des Hauptobjektivs eingenommene Platz eingespart wird, so dass die mikroskopische Messkomponente neben der Hebekomponente auf der linken und rechten Seite des Hauptobjektivs angeordnet werden kann und der Gesamtrahmen des schnellen Videomessgeräts nicht überschritten wird, auf die Weise wird die Stabilität effektiv verbessert und die Größe der Struktur reduziert;
3. (3) die vorliegende Erfindung kann das Werkstück von oben durch das geneigte Licht beleuchten, das von der ersten Beleuchtungslichtquelle gebildet wird, wodurch die Klarheit der Werkstückoberfläche verbessert wird; wenn die Kantenkontur des Werkstücks abgedeckt ist, kann die zweite Beleuchtungslichtquelle angehoben und in eine bündige Position mit der Konturoberfläche des Werkstücks bewegt werden, wodurch die Streuung des parallelen Lichts auf der Konturoberfläche des Werkstücks verwendet wird, um die Konturoberfläche von anderen Ebenen des Werkstücks zu unterscheiden, so dass die vertikale Konturoberfläche im Sichtfeld des Objektivs eine klare Konturlinie bilden kann, was das Erfassen und Messen der Kante des Werkstücks durch das schnelle Videomessgerät erleichtert und den Erkennungseffekt des schnellen Videomessgeräts verbessert;
4. (4) durch die Aufteilung der ersten Beleuchtungslichtquelle und der zweiten Beleuchtungslichtquelle in mehrere unabhängige Beleuchtungsteilbereiche kann das schnelle Videomessgerät die Beleuchtung jedes Beleuchtungsteilbereichs separat steuern, somit kann bei der Messung der Größe eines Teils des speziell geformten Werkstücks die Behinderung der Anzeigezeile durch Schließen eines Teils des Beleuchtungsteilbereichs verringert werden, so dass das schnelle Videomessgerät den zu messenden Werkstückumriss genau erhalten kann, was den Erkennungseffekt des schnellen Videomessgeräts weiter verbessert; gleichzeitig kann durch die partitionierte Beleuchtung eine Trennungs-Synthese für die Bilder in verschiedenen Beleuchtungszuständen in Software durchgeführt werden, um die Details des Werkstücks in Richtung der Werkstückhöhe hervorzuheben;
5. (5) durch den Dimm-Controller und das Steuermodul werden jeweils die Helligkeit und das Ein- und Ausschalten der Hintergrundbeleuchtungsquelle, der ersten Beleuchtungslichtquelle und der zweiten Beleuchtungslichtquelle gesteuert, einerseits können das separate Ein- und Ausschalten und die Einstellung der Helligkeit der Hintergrundbeleuchtungsquelle und der jeweiligen Beleuchtungsteilbereiche realisiert werden, andererseits wird die gesamte Helligkeit der ersten Beleuchtungslichtquelle und der zweiten Beleuchtungslichtquelle mittels des Dimm-Controllers gesteuert, die Verwendung des Steuermoduls zur Steuerung des ersten Beleuchtungsteilbereichs und des zweiten Beleuchtungsteilbereichs verringert wirksam die Schwierigkeit der Steuerung der Lichtquelle, so dass die vorliegende Erfindung eine Steuerung mit nur drei Dimm-Controllern und Steuermodule, deren Anzahl der Anzahl der Beleuchtungsteilbereiche entspricht, ermöglicht, wodurch die Kosten für die Steuerung der Lichtquelle wirksam reduziert werden;
6. (6) durch die Anordnung der ersten Führungsschiene an dem Seitenteil der X-Achsen-Bewegungsplattform und die Anordnung des ersten beweglichen Teils an der Außenseite der ersten Führungsschiene ermöglicht die vorliegende Erfindung, dass das erste bewegliche Teil und die X-Achsen-Bewegungsplattform in horizontaler Richtung nebeneinander angeordnet werden können, wodurch der von der vorliegenden Erfindung eingenommene Raum in Bezug auf die Höhe effektiv verringert wird; durch die Auswahl der Querrollen-Führungsschiene als Verbindungsführungsschiene kann die von der X-Achsen-Bewegungsplattform und der Y-Achsen-Bewegungsplattform bei der Querbewegung benötigte Antriebskraft wirksam reduziert werden, auf dieser Grundlage kann durch die Auswahl eines linearen Spindelmotors als Antriebselement der von der Bewegungsplattform in Richtung der X- und Y-Achse eingenommene Raum wirksam verringert werden, wodurch die Raumnutzungsrate der vorliegenden Erfindung weiter verbessert wird; da die Verbindungsteile der vorliegenden Erfindung auf der X-Achsen-Bewegungsplattform installiert werden können, kann die X-Achsen-Bewegungsplattform ihre eigene Dicke auf eine dünne Blechform reduzieren, wodurch die Höhenabmessung der vorliegenden Erfindung weiter verringert wird;
7. (7) durch die Navigationskamera, die an dem schnellen Videomessgerät angeordnet ist, kann sie das Sichtfeld des Hauptobjektivs während der Werkstückmessung abtasten und dann die Kantenposition des Werkstücks messen; wenn der Umriss des Werkstücks außerhalb des Sichtfeldes des Hauptobjektivs liegt, wird das Werkstück von der Bewegungsplattform dazu angetrieben, sich entlang der X-Achse oder Y-Achse zu bewegen, so dass das Hauptobjektiv Bilder von verschiedenen Positionen des Werkstücks aufnehmen kann, und dann werden die Bilder von der Software synthetisiert, um ein vollständiges Bild des Werkstücks und der entsprechenden Abmessungen zu erhalten; in Verbindung mit dem Vorstehenden ist die vorliegende Erfindung in der Lage, den Messbereich des schnellen Videomessgeräts auf 0,1 bis 400 mm zu vergrößern, ohne das Hauptobjektiv zu erweitern und ohne dass der Bediener die Position des Werkstücks manuell einstellen muss, wodurch der Messbereich der vorliegenden Erfindung vergrößert wird, die erforderlichen Produktionskosten gesenkt werden und die Bedienung durch die Mitarbeiter vereinfacht wird;
8. (8) nach der Anordnung kann die Navigationskamera auch in Kombination mit binokularen Vision-Technologie für die Bilderfassung des Werkstücks und die Rekonstruktion des 3D-Modells auf der Grundlage der erworbenen 3D-Punktwolken-Informationen der Bilder verwendet werden, wodurch die Funktionalität der vorliegenden Erfindung verbessert wird; aufgrund dessen weist die vorliegende Erfindung die Eigenschaften eines großen Messbereichs, niedriger Produktionskosten und einer guten Messwirkung auf.

Compared to the prior art, the present invention has the following properties:

1. (1) The present invention is able to measure workpieces of different sizes in three sets of measuring areas, respectively, through the cooperation of the main lens and the microscopic measuring component, and using the zoom lens, the problem of the double field of view lens caused by the large depth of field to solve with the unclear detection of small workpieces, to effectively expand the measurement range by 0.1-100mm;
2. (2) through the structural cooperation of the lifting component, the measuring light source is supported and lifted, so that the drum can limit the lifting rod in the vertical direction, with the drum avoiding the tilting of the lifting rod after being loaded with the gravity of the measuring light source; through the round tubular lifting rod, in the vertical state, the measuring light source can be stably limited, so that the measuring light source is not tilted due to the shift of the center of gravity; with the above cooperation, the present invention only needs the elevation component on a single side to support the measurement light source and drive it to rise and fall, saving the space occupied by the other side of the main objective, so that the microscopic measurement component next to the elevation component can be placed on the left and right of the main lens and does not exceed the overall frame of the high-speed video meter, thus effectively improving the stability and reducing the size of the structure;
3. (3) the present invention can illuminate the workpiece from above by the inclined light formed from the first illumination light source, thereby improving the clarity of the workpiece surface; when the edge contour of the workpiece is covered, the second illumination light source can be raised and moved to a flush position with the contour surface of the workpiece, thereby using the scattering of the parallel light on the contour surface of the workpiece to distinguish the contour surface from other planes of the workpiece , so that the vertical contour surface can form a clear contour line in the field of view of the lens, which makes it easier for the high-speed video measuring device to detect and measure the edge of the workpiece, and improves the detection effect of the high-speed video measuring device;
4. (4) by dividing the first illumination light source and the second illumination light source into multiple independent illumination sub-areas, the high-speed video measuring device can control the illumination of each illumination sub-area separately, thus when measuring the size of a part of the special-shaped workpiece, the obstruction of the display line by closing part of the Illumination sub-area can be reduced, so that the high-speed video measuring device can accurately obtain the workpiece outline to be measured, which further improves the recognition effect of the high-speed video measuring device; at the same time, through the partitioned illumination, a separation synthesis can be performed in software for the images in different illumination states in order to emphasize the details of the workpiece in the direction of the workpiece height;
5. (5) through the dimming controller and the control module are respectively controlled the brightness and turn on and off of the backlight source, the first illumination light source and the second illumination light source, on the one hand can separately turn on and off and adjust the brightness of the backlight source and the respective lighting sub-areas can be realized, on the other hand, the overall brightness of the first lighting light source and the second lighting light source is controlled by means of the dimming controller, the use of the control module to control the first lighting sub-area and the second lighting sub-area effectively reduces the difficulty of controlling the light source, so that the present Invention allows control with only three dimming controllers and control modules, the number of which corresponds to the number of partial lighting areas, thereby effectively reducing the cost of controlling the light source;
6. (6) By arranging the first guide rail on the side part of the X-axis moving platform and arranging the first moving part on the outside of the first guide rail, the present invention allows the first moving part and the X-axis moving platform to be horizontal direction can be juxtaposed, effectively reducing the space occupied by the present invention in terms of height; by selecting the cross roller guide rail as the connecting guide rail, the X- Axis moving platform and the Y-axis moving platform in the transverse movement can be effectively reduced driving force required, on this basis, by selecting a linear spindle motor as the driving element, the space occupied by the moving platform in the X- and Y-axis directions can be effectively reduced, thereby further improving the space utilization rate of the present invention; since the connecting parts of the present invention can be installed on the X-axis moving platform, the X-axis moving platform can reduce its own thickness to a thin sheet shape, thereby further reducing the height dimension of the present invention;
7. (7) through the navigation camera placed on the high-speed video measuring device, it can scan the field of view of the main lens during workpiece measurement, and then measure the edge position of the workpiece; when the outline of the workpiece is outside the field of view of the main lens, the workpiece is driven by the motion platform to move along the X-axis or Y-axis, so that the main lens can take pictures of different positions of the workpiece, and then become the images are synthesized by the software to obtain a complete image of the workpiece and its dimensions; In conjunction with the above, the present invention is able to increase the measuring range of the high-speed video measuring machine to 0.1-400mm without expanding the main lens and without the operator having to manually adjust the position of the workpiece, thereby increasing the measuring range of the present invention is increased, the required production cost is reduced, and the operation by the employees is simplified;
8. (8) According to the arrangement, the navigation camera can also be used in combination with binocular vision technology for image acquisition of the workpiece and reconstruction of the 3D model based on the acquired 3D point cloud information of the images, thereby enhancing the functionality of the present invention is improved; because of this, the present invention has the characteristics of wide measurement range, low production cost and good measurement effect.

character list

• 1 Figure 1 shows an outline drawing of the present invention.
• 2 Figure 12 shows a schematic diagram of the internal structure of the present invention.
• 3 Figure 12 shows a schematic structural view of a lifting component.
• 4 shows a schematic structural view of a motion platform.
• 5 shows a view according to direction A 4 .
• 6 shows a schematic assembly view of a navigation camera.
• 7 shows a schematic structural view of a measuring light source.

Reference List

1

main lens

2

movement platform

3

measuring light source

4

Camera with a large field of view

5

Small field of view camera

6

zoom lens

7

loading platform

8th

drum

9

lifting bar

10

drive steep

11

First guide rail

12

First moving part

13

Second guide rail

14

Second moving part

15

backlight source

16

navigation camera

201

X-axis motion platform

202

Y-axis motion platform

301

First illumination light source

302

Second illumination light source

DETAILED DESCRIPTION

The present invention is explained in more detail below in connection with figures and embodiments, but the present invention is not limited thereto. Example: A universal fast video measuring device, the composition of which is as in 1 shown comprising a liftable main objective 1, with a fast video measuring device frame being connected to the rear of the main objective 1 via a screw carriage, and with a movement platform 2 being arranged outside the field of view of the main objective 1, and with a microscopic measuring component being arranged on one side of the main objective 1 and wherein a measuring light source 3 is connected to the other side of the main objective 1 via a lifting component, and wherein the measuring light source 3 extends between the main objective 1 and the moving platform 2.

The main lens 1 is a dual field of view lens, the dual field of view lens can adopt a dual field of view telecentric lens, the maximum detection range of the dual field of view telecentric lens is 25mm and 100mm respectively, with the exterior of the dual field of view lens are one large field of view camera 4 and one small field of view camera 5 each connected, the large field of view camera 4 and the small field of view camera 5 are connected to the main lens 1 by 90° vertically.

The microscopic measuring component comprises a liftable zoom lens 6, with the exterior of the zoom lens 6 having a camera with a zoom lens connected thereto, and the zoom lens 6 having a measuring range of 0.1 to 15 mm, and the zoom lens 6 being an electric zoom lens 6 or a manual zoom lens 6, and on the outside of the zoom lens 6 is arranged a loading platform 7 which is separately arranged and aligned parallel to the moving platform 2.

The lifting component comprises a drum 8, which is located on the opposite side of the main objective 1 from the microscopic measuring component, with which drum 8 a lifting rod 9 is slidably connected, and with which the lifting rod 9 has the shape of a round tube, and with one side a drive part 10 is connected to the lifting rod 9 and a measuring light source 3 is connected to the bottom of the lifting rod 9 .

The drive part 10 is a spindle motor or a linear slide, the spindle motor being connected to the lifting rod 9 by a spindle pusher; and wherein the linear slide is connected to the lifting rod 9 via a slider.

The movement platform 2 comprises an X-axis movement platform 201, the X-axis movement platform 201 being connected to a Y-axis movement platform 202 via a first guide rail 11, and with the exterior of the Y-axis movement platform 202 having a first movable part 12 is connected, and wherein the X-axis moving platform 201 and the first movable part 12 are juxtaposed in the horizontal direction; and wherein the X-axis moving platform 201 is provided with a second guide rail 13, and wherein the second guide rail 13 is arranged perpendicularly to the first guide rail 11 on the X-axis moving platform 201, and at the outside of the second guide rail 13 a second movable Part 14 is arranged.

The first movable part 12 and the second movable part 14 have the same structure and each include a spindle motor to which a spool slide is connected, the spool slide of the first movable part 12 being connected to the Y-axis moving platform 202 and the spool slide of the second movable Part 14 is connected to the X-axis moving platform 201.

The spindle motor is a linear spindle motor.

The first guide rail 11 is arranged side by side on the left and right sides of the X-axis moving platform 201 , and the second guide rail 13 is arranged side by side on the front and rear sides of the X-axis moving platform 201 .

The first moving part 12 is connected to the first guide rail 11 on one side. The first guide rail 11 and the second guide rail 13 are each a cross roller guide rail.

The lower ends of the first movable part 12 and the second movable part 14 are each provided with a grating scale.

The exteriors of the first movable part 12 and the second movable part 14 are each provided with a protective cover.

The measurement light source 3 includes a first illumination light source 301 and a second illumination light source 302 juxtaposed along the height direction, the first illumination light source 301 emitting oblique light and the second illumination light source 302 emitting parallel 0-angle light.

A case is connected to the outsides of the first illumination light source 301 and the second illumination light source 302, and the first illumination light source 301 and the second illumination light source 302 are distributed annularly on the inner wall of the case.

The housing is provided with a cover plate located outside of the second illumination light source 302, the edge of the cover plate extending to the end portion of the second illumination light source 302, with the first illumination light source 301 located on the inside of the cover plate in the horizontal direction.

The first illumination light source 301 consists of four first partial illumination areas and the second illumination light source 302 consists of four second partial illumination areas.

The present invention further comprises a backlight source 15, which is located on a side of the motion platform 2 facing away from the measuring light source 3, the backlight source 15, the first illumination light source 301 and the second illumination light source 302 each being connected to a dimming controller, and the first The lighting section and the second lighting section are each connected to a control module; and wherein the control module can accept an 8-way I/O control card.

The first illumination light source 301 includes a plurality of LED light sources externally provided with a homogenizing plate.

The second illumination light source 302 consists of several light-emitting diodes arranged next to one another.

Navigation cameras 16 are arranged above the moving platform 2, the navigation cameras 16 slide ring-shaped along the horizontal direction or are distributed in multiple ring shapes around the moving platform 2, and the field of view of the navigation camera 16 extends to the outside of the field of view of the main lens 1.

The working principle of the present invention is as follows: in the measurement of the present invention, the measuring personnel first select the placement position according to the size of the workpiece and place it on the loading platform 7 when the workpiece profile is less than 15mm, and then set up the lens magnification sets a suitable area by electrically or manually controlling the zoom lens 6, and then raises and focuses the lens so that the zoom lens camera can get a clear picture of the workpiece and complete the measurement.

When the workpiece profile is greater than 15mm, the operator places the workpiece on the moving platform 2, and then the lens corresponding to the field of view is switched by the main lens 1, while the edge position of the workpiece is scanned by the navigation camera 16. When the workpiece profile is completely in the field of view of the main lens 1, the complete image of the workpiece is captured directly by the main lens 1 after lifting and focusing. When the edge of the workpiece exceeds the maximum field of view of the main lens 1 and enters the field of view of the navigation camera 16, the navigation camera 16 provides the system with the position of the workpiece outside the field of view, and then the system drives over the first moving part 12 and the second, respectively movable part 14 instructs the moving platform 2 to move horizontally in the X- and Y-axis directions so that each edge position of the workpiece moves to the center of the field of view of the main lens 1; then the main lens 1 repeatedly takes the partial images of the workpiece at different positions, then the partial images are combined via the software to form an overall image of the workpiece, thereby realizing the measurement of large workpieces of over 100 mm.

When the moving platform 2 moves, the linear spindle motor of the second moving part 14 drives the X-axis moving platform 201 to move left and right along the X-axis direction; at the same time, the first moving part 12 drives the Y-axis moving platform 202 to move forward and backward along the Y-axis direction to achieve the moving effect of the workpiece in the X- and Y-axis directions. During the movement of the platform, the position of the spool slide of the first movable part 12 and the second movable part 14 is detected by the grating scale on the bottom to enable the detection of the displacement distance of the X-axis moving platform 201 and the Y-axis moving platform 202 realize.

During normal measurement of the workpiece, the measuring light source 3 is located directly above the workpiece and uses a first illumination light source 301 in conjunction with a backlight source 15 to illuminate the surface and edges of the workpiece. When the outline of the workpiece is partially covered and the position of the edge cannot be accurately detected, the driving part 10 drives the measuring light source 3 to move along the Z-axis via the elevating rod 9 so that the second illumination light source 302 is aligned with the edge of the workpiece is flush, and then the second illumination light source 302 emits parallel light to irradiate the vertical surface of the workpiece, so that the workpiece forms scattered light at the end corner of the edge det and this is irradiated into the main lens 1, whereby a sharp contour line can be formed in the field of view of the lens, which improves the measurement accuracy of the high-speed video measuring device. Due to the special-shaped structure, if the workpiece is too confusingly illuminated and cannot be clearly detected, the user can turn off other lighting sub-areas through the control module according to the position of the desired contour line, so that the lens is less annoying when measuring, and the measurement accuracy of the high-speed video measuring device further is improved. At the same time, the partitioned illumination allows a separation synthesis to be performed in software for the images in different illumination states in order to emphasize the details of the workpiece in the direction of the workpiece height.

Claims (10)

Universal high-speed video measuring device, comprising a main objective (1) that can be lifted, a movement platform (2) being arranged outside the field of view of the main objective (1), and a microscopic measuring component being arranged on one side of the main objective (1), and with the other Side of the main lens (1) a measuring light source (3) is connected by a lifting component. Universal fast video measuring device claim 1 , wherein the main lens (1) is a dual field of view lens, a large field of view camera (4) and a small field of view camera (5) being respectively connected to the exterior of the dual field of view lens, and the large field of view camera Field of view (4) and the small field of view camera (5) are connected to the main lens (1) at 90° vertically. Universal fast video measuring device claim 1 , wherein the microscopic measuring component comprises a zoom lens (6) that can be lifted, and wherein a loading platform (7) is arranged on the outside of the zoom lens (6). Universal fast video measuring device claim 1 , wherein the lifting component comprises a drum (8), which is located on the side of the main objective (1) facing away from the microscopic measuring component, and wherein a lifting rod (9) is slidably connected to the drum (8), and wherein the lifting rod (9 ) is in the form of a round tube, and a driving part (10) is connected to one side of the lifting rod (9), and a measuring light source (3) is connected to the bottom of the lifting rod (9). Universal fast video measuring device claim 1 , wherein the movement platform (2) comprises an X-axis movement platform (201), and wherein the X-axis movement platform (201) is connected to a Y-axis movement platform (202) via a first guide rail (11), and wherein a first moving part (12) is connected to the outside of the Y-axis moving platform (202), and wherein the X-axis moving platform (201) and the first moving part (12) are arranged side by side in the horizontal direction; and wherein the X-axis moving platform (201) is provided with a second guide rail (13), and wherein the second guide rail (13) is arranged perpendicular to the first guide rail (11) on the X-axis moving platform (201), and a second movable part (14) being arranged on the outside of the second guide rail (13). Universal fast video measuring device claim 5 , wherein the first movable part (12) and the second movable part (14) have the same structure and each comprise a spindle motor to which a spool slide is connected, the spool slide of the first movable part (12) being connected to the Y-axis movement platform (202) and the spool slide of the second movable part (14) is connected to the X-axis movement platform (201). Universal fast video measuring device claim 1 , wherein the measurement light source (3) comprises a first illumination light source (301) and a second illumination light source (302) which are arranged next to one another along the height direction, and wherein the first illumination light source (301) emits an oblique light and the second illumination light source (302) emits a emits parallel light. Universal fast video measuring device claim 7 , wherein the first illumination light source (301) consists of a plurality of first partial illumination areas, and wherein the second illumination light source (302) consists of a plurality of second partial illumination areas. Universal fast video measuring device claim 8 , wherein it further comprises a backlight source (15), which is located on a side of the motion platform (2) facing away from the measuring light source (3), and wherein the backlight source (15), the first illumination light source (301) and the second illumination light source (302) are each connected to a dimming controller, and wherein the first lighting portion and the second lighting portion are each connected to a control module. Universal fast video measuring device claim 1 , wherein a navigation camera (16) is arranged above the motion platform (2), and wherein the field of view of the navigation camera (16) extends to the outside of the field of view of the main lens (1).

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