CN113340202A - Detection device and detection method - Google Patents
Detection device and detection method Download PDFInfo
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- CN113340202A CN113340202A CN202110742312.XA CN202110742312A CN113340202A CN 113340202 A CN113340202 A CN 113340202A CN 202110742312 A CN202110742312 A CN 202110742312A CN 113340202 A CN113340202 A CN 113340202A
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- 238000001514 detection method Methods 0.000 title claims abstract description 111
- 238000005406 washing Methods 0.000 claims abstract description 146
- 238000009434 installation Methods 0.000 claims abstract description 54
- 230000000007 visual effect Effects 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 24
- 238000003384 imaging method Methods 0.000 claims description 16
- 238000011179 visual inspection Methods 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 238000004458 analytical method Methods 0.000 description 1
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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
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
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Abstract
The invention provides a detection device and a detection method, wherein the detection device is used for detecting the installation precision of an inner cylinder of a washing machine relative to an installation flange, and comprises the following components: the transportation structure is used for transporting the inner drum of the washing machine; the detection head of the three-dimensional visual detection structure is arranged towards the inner barrel of the washing machine positioned on the transportation structure, so that point set data of the inner barrel of the washing machine are collected through the three-dimensional visual detection structure, and the installation precision of the inner barrel of the washing machine relative to the mounting flange is judged according to the point set data collected by the three-dimensional visual detection structure; and the control structure is connected with the transportation structure so that the control structure controls the transportation state of the transportation structure according to the installation precision. Through the technical scheme provided by the invention, the technical problem that the installation precision of the inner drum of the washing machine relative to the installation flange is inconvenient to detect in the prior art can be solved.
Description
Technical Field
The invention relates to the technical field of jitter detection, in particular to a detection device and a detection method.
Background
At present, an inner barrel of a pulsator washing machine in the prior art is generally formed by a chassis, a barrel body and a balance ring assembly through processes of flanging, spin riveting and the like, and after forming, radial runout and height deviation of an excircle at the top end of the inner barrel assembly relative to a mounting flange are often required to be detected.
However, the detection method in the prior art has high requirements for positioning of the inner barrel assembly, and has the hidden danger of damaging a paint layer of a mounting flange, and the problem of manual operation with high labor intensity exists in the aspect of operation.
Disclosure of Invention
The invention mainly aims to provide a detection device and a detection method, and aims to solve the technical problem that the installation accuracy of an inner drum of a washing machine relative to an installation flange is inconvenient to detect in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a detection device for detecting mounting accuracy of an inner tub of a washing machine with respect to a mounting flange, the detection device comprising: the transportation structure is used for transporting the inner drum of the washing machine; the detection head of the three-dimensional visual detection structure is arranged towards the inner barrel of the washing machine positioned on the transportation structure, so that point set data of the inner barrel of the washing machine are collected through the three-dimensional visual detection structure, and the installation precision of the inner barrel of the washing machine relative to the mounting flange is judged according to the point set data collected by the three-dimensional visual detection structure; and the control structure is connected with the transportation structure so that the control structure controls the transportation state of the transportation structure according to the installation precision.
Further, the detection device further comprises: the first position detection piece, the detection head orientation of first position detection piece is located the washing machine inner tube setting on the transportation initiating terminal of transportation structure to judge whether the washing machine inner tube has been placed to the transportation initiating terminal through first position detection piece.
Further, the detection device further comprises: and the detection head of the second position detection piece is arranged towards the inner drum of the washing machine positioned on the transportation terminal end of the transportation structure so as to detect whether the inner drum of the washing machine is transported to the transportation terminal end through the second position detection piece.
Further, the three-dimensional visual detection structure is a linear laser three-dimensional visual detection piece, a binocular visual detection piece or two plane visual detection pieces arranged at intervals.
Further, the detection device further comprises: and the alarm structure is connected with the control structure so that the alarm structure sends out an alarm signal according to the detection result of the control structure.
Further, the detection device further comprises: the transportation structure is arranged on the rack; the mounting bracket is installed on the rack, the installation part of the mounting bracket is located above the transportation structure, and the three-dimensional visual detection structure is arranged on the installation part.
According to another aspect of the present invention, there is provided a detection method including: acquiring point set data of an inner barrel of the washing machine; and determining the contour line and the mounting surface of the inner cylinder of the washing machine by using the point set data of the inner cylinder of the washing machine, and calculating the mounting accuracy of the inner cylinder of the washing machine relative to the mounting flange according to the contour line and the mounting surface of the inner cylinder of the washing machine.
Further, the method for acquiring the point set data of the inner drum of the washing machine comprises the following steps: the method comprises the steps of obtaining a point set of an excircle outline of the top of a drum body of an inner drum of the washing machine, a point set of a ring surface of the top of the drum body of the inner drum of the washing machine, a point set of a shaft hole of a mounting flange of the inner drum of the washing machine and mounting plane point set data of the mounting flange of the inner drum of the washing machine, wherein the point set data are obtained by measuring the inner drum of the washing machine through a three-dimensional visual detection structure of a detection device.
Further, the method for determining the contour line and the mounting surface of the inner barrel of the washing machine by using the point set data of the inner barrel of the washing machine comprises the following steps: calculating to obtain the outer circle contour of the inner cylinder of the washing machine according to the point set of the outer circle contour of the top of the cylinder body of the inner cylinder of the washing machine by using a three-dimensional imaging algorithm; calculating to obtain the top ring surface of the barrel of the inner barrel of the washing machine according to the point set of the barrel top ring surface of the inner barrel of the washing machine by using a three-dimensional imaging algorithm; calculating to obtain a mounting flange shaft hole cylindrical surface in the cylinder body of the inner cylinder of the washing machine according to a point set of shaft holes of a mounting flange of the inner cylinder of the washing machine by using a three-dimensional imaging algorithm; and calculating the mounting plane of the mounting flange of the inner barrel of the washing machine according to the mounting plane point set of the mounting flange of the inner barrel of the washing machine by using a three-dimensional imaging algorithm.
Further, the installation accuracy of the washing machine inner cylinder relative to the mounting flange comprises a radial runout amount and a height deviation, and the method for calculating the installation accuracy of the washing machine inner cylinder relative to the mounting flange according to the contour line and the mounting surface of the washing machine inner cylinder comprises the following steps: determining the radial runout amount and the height deviation of the inner drum of the washing machine by utilizing a radial runout algorithm and a height runout algorithm; comparing the calculated radial run-out with a preset radial run-out, and judging whether the calculated radial run-out is within the range of a standard difference value of the radial run-out; and comparing the calculated height deviation with a preset height deviation, and judging whether the calculated height deviation is within the height standard deviation range.
By applying the technical scheme of the invention, the installation accuracy of the inner cylinder of the washing machine relative to the mounting flange can be conveniently detected, and the transportation state of the transportation structure can be controlled according to the installation accuracy of the inner cylinder of the washing machine relative to the mounting flange. Specifically, the transportation state of the transportation structure herein refers to a normal operation condition and a transportation stop condition of the transportation structure. When the point set acquired by the three-dimensional visual detection structure is analyzed to obtain that the mounting precision of the inner cylinder of the washing machine relative to the mounting flange meets the mounting requirement, the control structure controls the transportation structure to normally operate so as to continuously transport the inner cylinder of the washing machine; when the point set acquired by the three-dimensional visual detection structure is analyzed to obtain that the mounting precision of the inner drum of the washing machine relative to the mounting flange does not meet the mounting requirement, the control structure controls the transportation of the transportation structure to stop so as to prevent the unqualified inner drum of the washing machine from being transported away. Therefore, the detection device provided by the embodiment can solve the technical problem that the installation precision of the inner drum of the washing machine relative to the installation flange is not convenient to detect in the prior art.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural diagram of a detection apparatus provided according to an embodiment of the present invention;
fig. 2 shows a flow chart of a detection method provided according to an embodiment of the invention.
Wherein the figures include the following reference numerals:
10. a transport structure; 20. a three-dimensional visual inspection structure; 30. a frame; 40. and (7) mounting frames.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, an embodiment of the present invention provides a detection device, which is used for detecting the installation accuracy of an inner cylinder of a washing machine, and the detection device includes a transportation structure 10, a three-dimensional visual detection structure 20 and a control structure, wherein a detection head of the three-dimensional visual detection structure 20 is disposed towards the inner cylinder of the washing machine on the transportation structure 10, so as to collect point set data of the inner cylinder of the washing machine through the three-dimensional visual detection structure 20, and judge the installation accuracy of the inner cylinder of the washing machine relative to a mounting flange according to the point set data collected by the three-dimensional visual detection structure 20. The transport structure 10 is connected to a control structure such that the control structure controls the transport state of the transport structure 10 according to the installation accuracy. The transport structure 10 in this embodiment may be a conveyor belt line.
By adopting the structure, the installation accuracy of the inner cylinder of the washing machine relative to the installation flange can be conveniently detected, and the transportation state of the transportation structure 10 can be controlled according to the installation accuracy of the inner cylinder of the washing machine relative to the installation flange. Specifically, the transportation state of the transportation structure 10 herein refers to a normal operation condition and a transportation stop condition of the transportation structure 10. When the point set acquired by the three-dimensional visual detection structure 20 is analyzed to obtain that the mounting precision of the inner cylinder of the washing machine relative to the mounting flange meets the mounting requirement, the control structure controls the transportation structure 10 to normally operate so as to continuously transport the inner cylinder of the washing machine; when the point set collected by the three-dimensional visual detection structure 20 is analyzed to obtain that the installation accuracy of the inner cylinder of the washing machine relative to the installation flange does not meet the installation requirement, the control structure controls the transportation of the transportation structure 10 to stop so as to prevent the unqualified inner cylinder of the washing machine from being transported away. Therefore, the detection device provided by the embodiment can solve the technical problem that the installation precision of the inner drum of the washing machine relative to the installation flange is not convenient to detect in the prior art.
Specifically, the control structure in this embodiment includes an upper computer and a control member, and the upper computer is connected with the three-dimensional visual detection structure 20, so that the upper computer can judge the installation accuracy of the inner cylinder of the washing machine according to the detection information of the three-dimensional visual detection structure 20. The upper computer and the transportation structure 10 are both connected with the control part, so that the control part controls the transportation state of the transportation structure 10 according to the detection result of the upper computer. By adopting the structure, the degree of structural automation can be further improved, so that the installation accuracy of the inner cylinder of the washing machine relative to the mounting flange can be conveniently and reasonably detected and judged, and the transportation state of the transportation structure 10 can be controlled according to the installation accuracy of the inner cylinder of the washing machine relative to the mounting flange. Preferably, the upper computer in this embodiment is a computer system, and the control element is a belt line controller.
In this embodiment, the detecting device further includes a first position detecting element, and a detecting head of the first position detecting element is disposed toward the inner drum of the washing machine located at the transportation starting end of the transportation structure 10, so as to determine whether the inner drum of the washing machine is placed at the transportation starting end through the first position detecting element. With the structure, when the first position detecting element detects that the washing machine inner barrel is placed at the starting end, the transportation structure 10 is controlled to normally transport so as to smoothly transport the washing machine inner barrel at the starting end.
Specifically, the detecting device in this embodiment further includes a second position detecting element, and a detecting head of the second position detecting element is disposed toward the transportation destination end of the transportation structure 10, so as to detect whether the inner tub of the washing machine is transported to the transportation destination end by the second position detecting element. With such a structural arrangement, when the second position detecting member detects whether the drum of the washing machine is transported to the terminal end, the transporting structure 10 is controlled to stop transporting.
In the present embodiment, the three-dimensional visual inspection structure 20 is a line laser three-dimensional visual inspection piece, or a binocular visual inspection piece, or two plane visual inspection pieces arranged at intervals. By adopting the structure, the structure is simple, and the production and the manufacture are convenient.
Specifically, the detection device in this embodiment further includes an alarm structure, and the alarm structure is connected to the control structure, so that the alarm structure sends out an alarm signal according to a detection result of the control structure. By adopting the structure, when the mounting accuracy of the inner barrel of the washing machine relative to the mounting flange is detected to exceed the range, the alarm structure performs alarm operation to prompt a worker to take away the unqualified product. In particular, the alarm structure may emit an optical or acoustic signal to indicate an alarm. Preferably, the alarm structure in this embodiment is connected to an upper computer of the control structure.
In this embodiment, the detection apparatus further comprises a frame 30 and a mounting frame 40, and the transport structure 10 is disposed on the frame 30. Is mounted on the frame 30, the mounting portion of the mounting frame 40 is located above the transport structure 10, and the three-dimensional visual inspection structure 20 is disposed on the mounting portion. By adopting the structure, the overall installation structure layout is optimized, and the compactness of the arrangement is improved.
The detection device provided by the embodiment comprises a 3D visual detection device on the rack 30 and a belt line conveying device which is placed below the device. An inner cylinder of the pulsator washing machine is placed on a belt line, and after the inner cylinder is transmitted to a detection device to be placed downwards, linear laser 3D vision is used for acquiring data of a top excircle outline point set, a top torus point set, a shaft hole point set of a mounting flange in the cylinder and a flange plane point set of the inner cylinder, and transmitting the data to a linear laser 3D vision detection computer; calculating and drawing the data of the top excircle contour line and the top annular surface of the inner cylinder, the shaft hole cylindrical surface of the mounting flange in the cylinder and the flange plane by the line laser 3D vision detection computer according to the obtained point set data by a 3D imaging algorithm; and the detection software calculates the radial jump amount and the height deviation according to the radial jump algorithm and the height jump algorithm on the data such as the contour, the surface, the cylindrical surface and the like drawn as above. And the detection software judges the detection output according to the preset diameter jump amount and the height deviation standard. If the inner cylinder belt line is detected to be qualified, outputting the qualified product to a post-production position; and if the products are unqualified, giving an audible and visual alarm, stopping belt line conveying, and enabling an operator to process the unqualified products and take the products off line.
As shown in fig. 2, a second embodiment of the present invention provides a detection method, which determines a contour line and a mounting surface of an inner cylinder of a washing machine by using point set data of the inner cylinder of the washing machine, and calculates mounting accuracy of the inner cylinder of the washing machine relative to a mounting flange according to the contour line and the mounting surface of the inner cylinder of the washing machine. By adopting the structure, the installation accuracy of the inner barrel of the washing machine relative to the installation flange can be conveniently detected, so that whether the installation accuracy of the inner barrel of the washing machine meets the requirement or not can be conveniently judged, and whether the inner barrel of the washing machine is a qualified product or not can be conveniently judged.
Specifically, the detection method may adopt the detection device in the previous embodiment, and the detection method includes acquiring point set data of the inner cylinder of the washing machine, where the point set data is obtained by measuring the inner cylinder of the washing machine by a three-dimensional visual detection device of the detection device; uploading point set data of the inner barrel of the washing machine to an upper computer of the three-dimensional vision device; and determining the contour line and the mounting surface of the inner barrel of the washing machine by using the point set data of the inner barrel of the washing machine, and calculating the mounting precision of the inner barrel of the washing machine according to the contour line and the mounting surface of the inner barrel of the washing machine.
In this embodiment, the method for acquiring the point set data of the inner cylinder of the washing machine includes: the method comprises the steps of obtaining a point set of the outline of the top excircle of the drum body of the inner drum of the washing machine, a point set of the top ring surface of the drum body of the inner drum of the washing machine, a point set of a shaft hole of a mounting flange of the inner drum of the washing machine and mounting plane point set data of the mounting flange of the inner drum of the washing machine, wherein the point set data are obtained by measuring the inner drum of the washing machine through a three-dimensional visual detection structure 20 of a detection device. By adopting the method, the installation data of the inner cylinder of the washing machine can be conveniently detected, so that the installation precision of the inner cylinder of the washing machine relative to the installation flange can be conveniently judged.
Specifically, in this embodiment, the method for determining the contour line and the mounting surface of the inner cylinder of the washing machine by using the point set data of the inner cylinder of the washing machine includes: calculating to obtain the outer circle contour of the inner cylinder of the washing machine according to the point set of the outer circle contour of the top of the cylinder body of the inner cylinder of the washing machine by using a three-dimensional imaging algorithm; calculating to obtain the top ring surface of the barrel of the inner barrel of the washing machine according to the point set of the barrel top ring surface of the inner barrel of the washing machine by using a three-dimensional imaging algorithm; calculating to obtain a mounting flange shaft hole cylindrical surface in the cylinder body of the inner cylinder of the washing machine according to a point set of shaft holes of a mounting flange of the inner cylinder of the washing machine by using a three-dimensional imaging algorithm; and calculating the mounting plane of the mounting flange of the inner barrel of the washing machine according to the mounting plane point set of the mounting flange of the inner barrel of the washing machine by using a three-dimensional imaging algorithm. By adopting the method, the contour line and the mounting surface of the inner cylinder of the washing machine can be conveniently and accurately obtained, so that the mounting precision of the inner cylinder of the washing machine relative to the mounting flange can be calculated better. It should be noted that the three-dimensional imaging algorithm belongs to the conventional technical wording in the field, there are various three-dimensional imaging algorithms commonly used in the industry, the use of different brands of systems may be different, and the three-dimensional imaging algorithm is determined after the three-dimensional detection structure and the system are determined.
In this embodiment, the installation accuracy of the washing machine inner cylinder relative to the installation plane includes a radial run-out amount and a height deviation, and the method for calculating the installation accuracy of the washing machine inner cylinder relative to the installation plane according to the contour line and the installation surface of the washing machine inner cylinder includes: determining the radial runout amount and the height deviation of the inner drum of the washing machine by utilizing a radial runout algorithm and a height runout algorithm; comparing the calculated radial run-out with a preset radial run-out, and judging whether the calculated radial run-out is within the range of a standard difference value of the radial run-out; and comparing the calculated height deviation with a preset height deviation, and judging whether the calculated height deviation is within the height standard deviation range. By adopting the method, the height deviation and the radial runout can be calculated better, so that whether the installation precision of the inner drum of the washing machine relative to the installation flange meets the requirement or not can be judged better, and unqualified products can be judged conveniently.
It should be noted that the radial run-out algorithm and the height run-out algorithm are terms of art in the machine manufacturing industry and are well known to those skilled in the art.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the invention adopts a non-contact distance detection and shape detection device, a method and a flow for calculating and analyzing radial run-out and height deviation of an inner barrel of a wave wheel, and an integration scheme of the detection device and a calculation analysis automation system, wherein the method comprises the following steps: the positioning requirement of the inner barrel assembly in the inner barrel jumping detection of the washing machine is reduced to the minimum, the influence of the error of a positioning system on a detection result is eliminated, and the consistency of the detection process is guaranteed. The manual operation of a specially-assigned person for detecting the large labor intensity is eliminated, and the production efficiency of the inner cylinder is improved; the quality control level of the installation precision of the inner barrel is improved, the abnormity that the inner barrel of the washing machine collides with the barrel is reduced, and the market competitiveness of the washing machine is enhanced; the invention has the characteristics of simple structure, convenient detection and low manufacturing cost.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A detection device, characterized in that, the detection device is used for detecting the installation accuracy of the washing machine inner drum relative to the installation flange, the detection device comprises:
a transport structure (10), said transport structure (10) being for transporting said washing machine drum;
the three-dimensional visual detection structure (20), a detection head of the three-dimensional visual detection structure (20) is arranged towards the inner drum of the washing machine positioned on the transportation structure (10), so that point set data of the inner drum of the washing machine is collected through the three-dimensional visual detection structure (20), and the installation precision of the inner drum of the washing machine relative to the mounting flange is judged according to the point set data collected by the three-dimensional visual detection structure (20);
and the transport structure (10) is connected with the control structure, so that the control structure controls the transport state of the transport structure (10) according to the installation precision of the washing machine inner barrel relative to the mounting flange.
2. The detection device according to claim 1, further comprising:
the first position detection piece is arranged, and the detection head of the first position detection piece faces towards the inner drum of the washing machine positioned on the transportation starting end of the transportation structure (10) so as to judge whether the inner drum of the washing machine is placed at the transportation starting end or not through the first position detection piece.
3. The detection device according to claim 1, further comprising:
a second position detection member, the detection head of which is arranged towards the washing machine inner barrel on the transportation terminal end of the transportation structure (10), so as to detect whether the washing machine inner barrel is transported to the transportation terminal end through the second position detection member.
4. The inspection device of claim 1, wherein the three-dimensional visual inspection structure (20) is a line laser three-dimensional visual inspection member, or a binocular visual inspection member, or two spaced apart planar visual inspection members.
5. The detection device according to claim 1, further comprising:
and the alarm structure is connected with the control structure so that the alarm structure sends out an alarm signal according to the detection result of the control structure.
6. The detection device according to claim 1, further comprising:
a frame (30), on which frame (30) the transport structure (10) is arranged;
mounting bracket (40), install in frame (30), the installation department of mounting bracket (40) is located the top of transport structure (10), three-dimensional visual detection structure (20) set up on the installation department.
7. A detection method, characterized in that the detection method comprises:
acquiring point set data of an inner barrel of the washing machine;
and determining the contour line and the mounting surface of the inner barrel of the washing machine by using the point set data of the inner barrel of the washing machine, and calculating the mounting precision of the inner barrel of the washing machine relative to the mounting flange according to the contour line and the mounting surface of the inner barrel of the washing machine.
8. The detection method according to claim 7, wherein the method of obtaining point set data of the washing machine drum comprises:
the method comprises the steps of obtaining a point set of an excircle outline of the top of a barrel of an inner barrel of the washing machine, a point set of a ring surface of the top of the barrel of the inner barrel of the washing machine, a point set of a shaft hole of a mounting flange of the inner barrel of the washing machine and mounting plane point set data of the mounting flange of the inner barrel of the washing machine.
9. The inspection method of claim 8, wherein the method of determining the contour and mounting surface of the washing machine drum using the point set data of the washing machine drum comprises:
calculating to obtain the outer circle contour of the inner drum of the washing machine according to the point set of the outer circle contour of the top of the inner drum of the washing machine by using a three-dimensional imaging algorithm;
calculating to obtain the top annular surface of the barrel of the inner barrel of the washing machine according to the point set of the barrel top annular surface of the inner barrel of the washing machine by using a three-dimensional imaging algorithm;
calculating to obtain a mounting flange shaft hole cylindrical surface in the cylinder body of the inner cylinder of the washing machine according to the point set of the shaft hole of the mounting flange of the inner cylinder of the washing machine by using a three-dimensional imaging algorithm;
and calculating the mounting plane of the mounting flange of the inner barrel of the washing machine according to the mounting plane point set of the mounting flange of the inner barrel of the washing machine by utilizing a three-dimensional imaging algorithm.
10. The inspection method of claim 7, wherein the mounting accuracy of the washing machine drum relative to the mounting flange includes a radial run out and a height deviation, and the method of calculating the mounting accuracy of the washing machine drum relative to the mounting flange based on the contour line and the mounting surface of the washing machine drum comprises:
determining the radial runout amount and the height deviation by utilizing a radial runout algorithm and a height runout algorithm;
comparing the calculated radial run-out with a preset radial run-out, and judging whether the calculated radial run-out is within the range of a standard difference value of the radial run-out;
and comparing the calculated height deviation with a preset height deviation, and judging whether the calculated height deviation is within the height standard deviation range.
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2021
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| JPH01321284A (en) * | 1988-06-22 | 1989-12-27 | Mitsubishi Electric Corp | Instrument for measuring installation accuracy of elevator guide rail |
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Application publication date: 20210903 |