Wave-absorbing honeycomb material arc on-machine detection device and method

Abstract

The invention discloses a wave-absorbing honeycomb material arc on-machine detection device and method.The wave-absorbing honeycomb material arc on-machine detection device comprises a scanning device and a workpiece assembling device, the scanning device is provided with a laser transmitter and a data transmission system, the upper portion and the lower portion of the laser transmitter are each provided with a binocular camera and a light supplementing lamp, and the input end of the data transmission system is electrically connected with the cameras; the output end of the data transmission system is connected with the receiving end through a data transmission socket; and the workpiece assembling device is used for providing the workpieces subjected to shape numerical milling. Compared with a traditional honeycomb detection method, the three-dimensional scanning mode can be used for detecting some places which cannot be detected by the traditional detection method, such as areas with the arc tip radius smaller than 2 mm.

Description

Technical Field

[0001] The invention relates to the technical field of honeycomb arc tip detection, and in particular to an on-machine detection device and method for arcs of wave-absorbing honeycomb materials. Background Art

[0002] The wave-absorbing honeycomb has high strength, light weight, waterproof, fatigue resistance, chemical corrosion resistance, insulation and a series of advantages. It can be widely used in the fields of machinery, chemical industry, transportation and transportation. In the military field, it is often used for aircraft structural parts. Since the honeycomb material is a mixed material of aramid paper honeycomb, the honeycomb is flexible in the non-stress direction and is very easy to deform. The molding process has certain difficulties, especially in CNC processing. Since the R area of ​​the arc tip (i.e., the radius area of ​​the arc tip) is too small to be effectively detected, the honeycomb is very likely to produce product tolerance exceeding during processing, which ultimately leads to low product qualification rate, poor precision and even scrapping. Due to the characteristics of the honeycomb itself, there is a problem that it cannot be detected after processing, and it is impossible to determine whether the product meets the precision requirements. The honeycomb detection means is very different from the existing mature detection means. The difference mainly lies in the detection method. Finding a new detection method combined with CNC processing technology to perform honeycomb detection is the most urgent need at present. In view of this problem, the present invention provides a new honeycomb arc tip (R < 2mm) detection method for honeycomb arc tip detection. Summary of the invention

[0003] The object of the present invention is to provide an on-machine detection device and method for circular arcs of absorbing honeycomb materials, so as to solve the technical problem in the prior art that the area R at the tip of the circular arc is too small to be effectively detected.

[0004] To achieve the above object, the present invention provides the following technical solutions: The present invention provides an on-machine detection device for circular arcs of absorbing honeycomb materials, comprising a scanning device and a workpiece assembly device, wherein the scanning device is provided with a laser transmitter and a data transmission system, the laser transmitter is provided with a binocular camera and a fill light above and below, the input end of the data transmission system is electrically connected to the camera, and the output end of the data transmission system is connected to a receiving end via a data transmission socket; the workpiece assembly device provides a workpiece after the shape is completed by numerical milling.

[0005] Furthermore, the binocular camera includes camera A and camera B; the fill light includes an LED fill light and a hole measurement function LED fill light.

[0006] Furthermore, the scanning device is also provided with a power socket, function buttons, and color indicator lights.

[0007] Furthermore, the workpiece assembly device includes a CNC machine tool, a tooling with completed contour milling, and a workpiece with completed contour milling.

[0008] The present invention also provides a detection method for an on-machine detection device for circular arcs of wave-absorbing honeycomb materials, comprising the following steps: S1, positioning and installing the tooling on the CNC machine tool according to the marking points; S2, milling the shape of the tooling through a numerical control program; S3, installing the workpiece on the tooling; S4, performing CNC milling on the workpiece shape through a CNC program; S5. After the workpiece shape is milled, a black film is used to completely cover the arc tip of the workpiece and fit it to the surface of the workpiece; then the laser emitter of the scanning device is used to emit multiple laser lines to the surface of the object, and then the binocular camera obtains the image data of the laser line on the surface of the object, and the data is exported through the data transmission socket. After image processing and binocular stereo vision solution, the three-dimensional point cloud data of the position of the laser line on the surface of the object is obtained to complete the detection.

[0009] Furthermore, the marking points in step S1 are marking points in VERICUT simulation software.

[0010] Furthermore, in step S5, the black film is bonded to the surface of the workpiece by using a roller.

[0011] Furthermore, the distance between the lens of the binocular camera and the focus point in step S5 is the reference distance of the scanning device.

[0012] Furthermore, in step S5, the distance between the scanning device and the workpiece is a reference distance of the scanning device.

[0013] Based on the above technical solution, the embodiments of the present invention can at least produce the following technical effects: (1) Compared with the conventional honeycomb detection method, the on-machine detection device and method for circular arcs of absorbing honeycomb materials provided by the present invention can detect some places that cannot be detected by conventional detection methods by using a three-dimensional scanning method, such as the area where the radius of the circular arc tip is less than 2 mm.

[0014] (2) The invention provides an on-machine detection device and method for arcs of absorbing honeycomb materials. The traditional honeycomb detection method requires the installation of a copper sheet on the measuring head, and the thickness of the copper sheet will greatly affect the measurement accuracy. The use of a three-dimensional scanning method can effectively improve the measurement accuracy.

[0015] (3) The device and method for detecting arcs of absorbing honeycomb materials provided by the present invention solve the problem that the parts in the honeycomb R region are too small to be detected. This method can make the accuracy of honeycomb detection ≤0.1mm, thereby improving the production efficiency and high precision of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 is a flow chart of an embodiment of the present invention; Figure 2 is a front side view of a scanning device according to an embodiment of the present invention; Figure 3 is a rear side view of a scanning device according to an embodiment of the present invention; Figure 4 is a workpiece assembly diagram of an embodiment of the present invention; Figure 5 The laser transmitter of the embodiment of the present invention emits a plurality of laser lines; Figure 6 It is the LED light distance judgment of the scanning device of the embodiment of the present invention; In the figure: 1. Camera A; 2. Camera B; 3. Laser transmitter; 4. LED fill light; 5. LED fill light for hole measurement function; 6. Data transmission socket; 7. Power socket; 8. Function button; 9. Color indicator light; 10. CNC machine tool; 11. Tooling; 12. Workpiece. DETAILED DESCRIPTION

[0018] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0019] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0020] like Figure 1-6 As shown, the present invention provides an on-machine detection device for circular arcs of absorbing honeycomb materials, including a scanning device and a workpiece assembly device, wherein the scanning device is provided with a laser emitter 3 and a data transmission system, and binocular cameras and fill lights are provided above and below the laser emitter 3, the input end of the data transmission system is electrically connected to the binocular camera, and the output end of the data transmission system is connected to the receiving end via a data transmission socket 6; the workpiece assembly device provides a workpiece after the shape is completed by numerical milling.

[0021] In this embodiment, the binocular camera includes a camera A1 and a camera B2; the fill light includes an LED fill light 4 and a hole measurement function LED fill light 5.

[0022] In this embodiment, the scanning device is further provided with a power socket 7 , function buttons 8 , and a color indicator light 9 .

[0023] In this embodiment, the workpiece assembly device includes a CNC machine tool 10, a tool 11 whose outer shape has been milled, and a workpiece 12 whose outer shape has been milled.

[0024] A detection method for an arc on-machine detection device of a wave-absorbing honeycomb material comprises the following steps: S1, positioning and installing the tooling 11 on the CNC machine tool 10 according to the marking points in the VERICUT simulation software; S2, milling the outer shape of the tooling 11 through a numerical control program; S3, installing the workpiece 12 on the tooling 11; S4, performing CNC milling on the shape of the workpiece 12 through a CNC program; S5, after the shape of the workpiece 12 is milled, a black film is used to completely cover the arc tip of the workpiece 12 and fit the workpiece 12 surface; then the laser emitter 3 of the scanning device is used to emit multiple laser lines to the surface of the object, and then the binocular camera obtains the image data of the laser line on the surface of the object, such as Figure 5 As shown. When the laser line of the scanning device continuously passes over the surface of the object, all the laser point clouds form the surface of the object. Data is exported through the data transmission socket 6, and after image processing and binocular stereo vision solution, the three-dimensional point cloud data of the position of the laser line on the surface of the object is obtained to complete the detection.

[0025] In this embodiment, in step S5, the black film is bonded to the surface of the workpiece 12 by a roller.

[0026] In this embodiment, the distance between the lens of the binocular camera and the focus point in step S5 is the reference distance of the scanning device.

[0027] In this embodiment, the distance between the scanning device and the workpiece 12 in step S5 is the distance of the reference distance of the scanning device, such as Figure 6 shown.

[0028] When the indicator light is in the middle, it means the distance is appropriate; when the indicator light is at the top, it means the distance is too close; when the indicator light is at the bottom, it means the distance is too far.

[0029] The structures, functions and connection forms disclosed in this article can be implemented in other ways. For example, the embodiments described above are only exemplary, for example, multiple components can be combined or integrated into another component; in addition, each functional component in each embodiment of this article can be integrated into one functional component, or each functional component can exist physically separately, or two or more functional components can be integrated into one functional component.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An arc detection device for absorbing honeycomb materials, characterized in that: The invention comprises a scanning device and a workpiece assembly device, wherein the scanning device is provided with a laser emitter (3) and a data transmission system, the laser emitter (3) is provided with a binocular camera and a fill light above and below, the input end of the data transmission system is electrically connected to the binocular camera, and the output end of the data transmission system is connected to a receiving end via a data transmission socket (6); the workpiece assembly device provides a workpiece (12) after the shape is digitally milled.

2. The arc detection device for wave-absorbing honeycomb materials according to claim 1 is characterized in that: The binocular camera comprises a camera A (1) and a camera B (2); the fill light comprises an LED fill light (4) and a hole measuring function LED fill light (5).

3. The arc detection device for wave-absorbing honeycomb materials according to claim 1 is characterized in that: The workpiece assembly device comprises a numerically controlled machine tool (10), a tool (11) whose outer shape has been milled, and a workpiece (12) whose outer shape has been milled.

4. The detection method of the arc on-machine detection device of the wave-absorbing honeycomb material according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1, positioning and installing the tooling (11) on the CNC machine tool (10) according to the marking points; S2, milling the shape of the tooling through a numerical control program; S3, installing the workpiece (12) on the tooling (11); S4, performing CNC milling on the outer shape of the workpiece (12) by using a CNC program; S5. After the shape of the workpiece (12) is milled, a black film is used to completely cover the arc tip of the workpiece and fit it to the surface of the workpiece (12); then the laser emitter (3) of the scanning device is used to emit multiple laser lines to the surface of the object, and then the binocular camera obtains image data of the laser line on the surface of the object, and the data is exported through the data transmission socket (7). After image processing and binocular stereo vision solution, three-dimensional point cloud data of the position of the laser line on the surface of the object is obtained to complete the detection.

5. The method for detecting arcs in a machine of a wave-absorbing honeycomb material according to claim 4, characterized in that: The marking points in step S1 are marking points in the VERICUT simulation software.

6. The method for detecting arcs on a machine of a wave-absorbing honeycomb material according to claim 4, characterized in that: In step S5, the black film is bonded to the surface of the workpiece (12) by using a roller.

7. The method for detecting arcs in a wave-absorbing honeycomb material according to claim 4, characterized in that: The distance between the lens of the binocular camera and the focus point in step S5 is the reference distance of the scanning device.

8. The method for detecting arcs in a wave-absorbing honeycomb material according to claim 4, characterized in that: In step S5, the distance between the scanning device and the workpiece (12) is the distance of the reference distance of the scanning device.

Images