Covered edge thickness detection device and detection method

Abstract

The invention generally relates to the technical field of automobile manufacturing, in particular to a covered edge thickness detection device and method, a plurality of covered edge thickness detection devices are arranged along the outer contour of a to-be-detected workpiece, and the covered edge thickness detection devices are fixedly mounted on a detection table through a mounting seat. Then the distance between a first laser distance measuring sensor and a second laser distance measuring sensor of the edge covering thickness detection device is adjusted through a height adjusting mechanism so as to adapt to the height position of the to-be-detected workpiece, a steering mechanism is started to enable a first clamping arm to be vertical, and the to-be-detected workpiece is fixed to a detection table through a limiting mechanism; the steering mechanism is closed to enable the first clamping arm to be horizontal, the edge covering thickness of the to-be-detected workpiece is detected through the first laser distance measuring sensor and the second laser distance measuring sensor, and multiple measuring points of the to-be-detected workpiece are synchronously detected through the multiple edge covering thickness detecting devices; the technical problem that in the prior art, when a covered edge thickness detection device detects multiple points, the detection period is long is solved.

Description

Technical Field

[0001] The present invention generally relates to the field of automobile manufacturing technology, and in particular to a hemming thickness detection device and a detection method. Background Art

[0002] Door hemming is a process used during the welding process to ensure the appearance quality of the door and the connection strength between the inner and outer door panels. After the hemming is completed, the thickness of the hemming needs to be measured and the value recorded. After analysis, the robot is taught and the robot's motion trajectory is adjusted to adjust the thickness of the hemming.

[0003] In the prior art, for example, in the Chinese patent with application number CN202210222552.1, the edge thickness detection device includes a bracket, a first laser ranging sensor and a second laser ranging sensor. A C-shaped mounting frame is provided at the upper end of the bracket, the first laser ranging sensor is installed on one end of the C-shaped mounting frame, and the second laser ranging sensor is installed on the other end of the C-shaped mounting frame, wherein the laser emitting head of the first laser ranging sensor and the laser emitting head of the second laser ranging sensor are arranged opposite to each other, and there is a distance between the first laser ranging sensor and the second laser ranging sensor, which is calculated by the controller of the production line to realize feedback of the thickness data of the current production.

[0004] However, since there are multiple measuring points for edge thickness detection along the outer contour of the workpiece to be detected, it is necessary to continuously change the position of the workpiece to be detected between the first laser ranging sensor and the second laser ranging sensor for comprehensive detection. This not only tests the accuracy of the robot's grasping position of the workpiece to be detected, but also results in a longer detection cycle, resulting in inconvenience in actual use. Summary of the invention

[0005] The present application provides a hemming thickness detection device and a detection method to solve the technical problem of a long detection cycle when the hemming thickness detection device in the prior art performs multi-point detection.

[0006] In a first aspect, the present application provides a hemming thickness detection device, comprising a first laser ranging sensor, a second laser ranging sensor, a steering mechanism, a mounting seat and a height adjustment mechanism; a first clamping arm is movably arranged on the steering mechanism, the first clamping arm can realize two states, vertical and horizontal, and the first laser ranging sensor is arranged on the first clamping arm; a second clamping arm is extended outwardly from one side of the mounting seat corresponding to the first clamping arm, and the second laser ranging sensor is arranged on the second clamping arm; the height adjustment mechanism is arranged between the steering mechanism and the mounting seat, and adjusts the distance between the first laser ranging sensor and the second laser ranging sensor.

[0007] Furthermore, the steering mechanism includes a first clamping arm, a base, a connecting rod and a handle rod for forming a four-bar mechanism, wherein one end of the first clamping arm away from the first laser ranging sensor is respectively hinged to the base and the handle rod, the handle rod is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the base.

[0008] Furthermore, the first clamping arm is L-shaped, the upper portion of the first clamping arm is hinged to one end of the handle rod, and the lower portion of the first clamping arm is hinged to one end of the base.

[0009] Furthermore, the base is arranged above the height adjustment mechanism.

[0010] Furthermore, an operating handle is extended at the other end of the handle rod.

[0011] Furthermore, the mounting seat adopts a switch-type magnetic seat.

[0012] Furthermore, the height adjustment mechanism adopts a precision lifting platform.

[0013] In a second aspect, the present application provides a method for detecting the thickness of an edge, wherein the method for detecting the thickness of an edge adopts a device for detecting the thickness of an edge, and comprises the steps of:

[0014] S1, arranging a plurality of edge thickness detection devices along the outer contour of the workpiece to be detected, and fixing the edge thickness detection devices on the detection table through a mounting seat;

[0015] S2, adjusting the distance between the first laser distance measuring sensor and the second laser distance measuring sensor of the edge thickness detection device through the height adjustment mechanism to adapt to the height position of the workpiece to be detected;

[0016] S3, opening the steering mechanism to make the first clamping arm vertical, so as to facilitate the placement of the workpiece to be inspected;

[0017] S4, fixing the workpiece to be inspected on the inspection table through a limiting mechanism;

[0018] S5, closing the steering mechanism to make the first clamping arm horizontal;

[0019] S6, detecting the edge thickness of the workpiece to be detected by using the first laser distance measuring sensor and the second laser distance measuring sensor.

[0020] Furthermore, in S4, a pad is placed between the inspection platform and the workpiece to be inspected, so that the workpiece to be inspected is raised.

[0021] It can be seen from the above technical scheme that the advantages and positive effects of a edging thickness detection device of the present invention are: the application arranges multiple edging thickness detection devices along the outer contour of the workpiece to be detected, and fixes the edging thickness detection device on the detection table through a mounting seat, and then adjusts the distance between the first laser ranging sensor and the second laser ranging sensor of the edging thickness detection device through a height adjustment mechanism to adapt to the height position of the workpiece to be detected, opens the steering mechanism to make the first clamping arm vertical, fixes the workpiece to be detected on the detection table through a limiting mechanism, closes the steering mechanism to make the first clamping arm horizontal, detects the edging thickness of the workpiece to be detected through the first laser ranging sensor and the second laser ranging sensor, and simultaneously detects multiple measuring points of the workpiece to be detected through multiple edging thickness detection devices, which greatly shortens the detection time and solves the technical problem of long detection cycle when the edging thickness detection device performs multi-point detection in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the first state structure of a hemming thickness detection device disclosed in an embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the second state structure of a hemming thickness detection device disclosed in an embodiment of the present application;

[0025] Figure 3 It is a schematic diagram of the use of a hemming thickness detection device disclosed in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1. Hemming thickness detection device; 2. Workpiece to be detected; 3. Testing platform; 4. Limiting mechanism; 10. First laser distance sensor; 11. Second laser distance sensor; 12. Steering mechanism; 13. Mounting seat; 14. Height adjustment mechanism; 120. First clamping arm; 121. Base; 122. Connecting rod; 123. Handle rod; 130. Second clamping arm. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0029] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0030] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this 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 this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0031] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0032] It should also be noted that in the description of this application, 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0033] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0035] like Figure 1-2 As shown, an embodiment of a hemming thickness detection device includes a first laser ranging sensor 10, a second laser ranging sensor 11, a steering mechanism 12, a mounting seat 13 and a height adjustment mechanism 14; a first clamping arm 120 is movably provided on the steering mechanism 12, and the first clamping arm 120 can realize two states of vertical and horizontal, and the first laser ranging sensor 10 is arranged on the first clamping arm 120; a second clamping arm 130 is extended outwardly on a side corresponding to the first clamping arm 120 on the mounting seat 13, and the second laser ranging sensor 11 is arranged on the second clamping arm 130; the height adjustment mechanism 14 is arranged between the steering mechanism 12 and the mounting seat 13, and adjusts the distance between the first laser ranging sensor 10 and the second laser ranging sensor 11, wherein the positions of the first laser ranging sensor 10 and the second laser ranging sensor 11 are relatively arranged, and connected to a central processing unit through a transmission line.

[0036] like Figure 1 to Figure 3 As shown, when in use, a plurality of the above-mentioned edge thickness detection devices 1 are arranged along the outer contour of the workpiece 2 to be detected, and the edge thickness detection device 1 is fixedly installed on the detection platform 3 through the mounting seat 13, and then the distance between the first laser distance sensor 10 and the second laser distance sensor 11 of the edge thickness detection device 1 is adjusted by the height adjustment mechanism 14 to adapt to the height position of the workpiece 2 to be detected, and the steering mechanism 12 is opened to make the first clamping arm 120 vertical, as shown in FIG. Figure 2 In the second state shown, after the workpiece 2 to be inspected is fixed on the inspection platform 3 by the limiting mechanism 4, the steering mechanism 12 is closed to make the first clamping arm 120 horizontal, as shown in FIG. Figure 1 In the first state shown, the edge thickness of the workpiece 2 to be inspected is detected by the first laser ranging sensor 10 and the second laser ranging sensor 11, and multiple measuring points of the workpiece 2 to be inspected are detected synchronously by multiple edge thickness detection devices 1, which greatly shortens the detection time and solves the technical problem of long detection cycle when the edge thickness detection device 1 performs multi-point detection in the prior art.

[0037] like Figure 1-2 As shown, in the technical solution of the first embodiment, the steering mechanism 12 includes a first clamping arm 120, a base 121, a connecting rod 122 and a handle bar 123 for forming a four-bar mechanism, and the end of the first clamping arm 120 away from the first laser ranging sensor 10 is respectively hinged to the base 121 and the handle bar 123, the handle bar 123 is hinged to one end of the connecting rod 122, and the other end of the connecting rod 122 is hinged to the base 121. It is particularly noted that the steering mechanism 12 can adopt the above structure, and can select a horizontal clamp of model GH-203-F, or can adopt other structures to realize the vertical and horizontal states of the first clamping arm 120, and its structural form includes a hinge with a limit position, etc.

[0038] like Figure 1-2 As shown, in the technical solution of the first embodiment, the first clamping arm 120 is L-shaped, the upper part of the first clamping arm 120 is hinged to one end of the handle bar 123, and the lower part of the first clamping arm 120 is hinged to one end of the base 121. The first clamping arm 120 is composed of a long arm and a short arm, wherein one end of the long arm is used to connect the first laser ranging sensor 10, the long arm and the short arm are vertically connected to form an L shape, and the short arm is respectively connected to the handle bar 123 and the base 121, wherein the upper part of the short arm is hinged to one end of the handle bar 123, and the lower part of the short arm is hinged to one end of the base 121.

[0039] like Figure 1-2 As shown, in the technical solution of the first embodiment, the base 121 is arranged above the height adjustment mechanism 14. The base 121 can be connected to the height adjustment mechanism 14 by bolts. The above is only a preferred solution, and non-detachable connection and detachable connection can also be adopted but not limited to, wherein the non-detachable connection includes welding, riveting, gluing, etc., and the detachable connection can include screw connection, buckle connection, clamping, etc.

[0040] like Figure 1-2 As shown, in the technical solution of the first embodiment, an operating handle is extended at the other end of the handle bar 123. A rubber sleeve can be provided on the operating handle to facilitate operation, and the extended operating handle can save effort. When the operating handle is lifted upward, the principle of the four-bar mechanism causes the first clamping arm 120 located in the front to be lifted upward and maintained in a vertical state; when the operating handle is pressed downward, the principle of the four-bar mechanism causes the first clamping arm 120 located in the front to fall downward and maintain a horizontal state. It should be noted that, when the first clamping arm 120 is in a horizontal state, the operating handle just falls on the top of the base 121, and the top of the base 121 can play a good limiting role, making the entire four-bar mechanism relatively stable and improving the operating accuracy.

[0041] like Figure 1-2 As shown, in the technical solution of the first embodiment, the mounting seat 13 adopts a switch-type magnetic seat. The magnetic seat is the most widely used in the machine manufacturing industry, widely applicable to various types of machine tools, and is also one of the indispensable tools. It is also used in scientific research in various scientific research institutions and colleges and universities. The inside of the magnetic seat is a cylinder, in the middle of which a strip of permanent magnet or permanent magnet is placed, and the outside base 121 is a piece of soft magnetic material (soft magnetic material refers to a ferrite material that is easy to magnetize and demagnetize under a weak magnetic field). By turning the handle, the magnet inside is turned. When the two poles of the magnet (N or S) are in the up and down direction, that is, when the N or S pole of the magnet is facing the soft magnetic material base 121, it is magnetized, and has strong magnetism in this direction, so it can be used to absorb the steel surface. When the two poles of the magnet are in the horizontal direction, and when the middle of NS is facing the soft magnetic material base 121 (the middle of the long strip magnet has only very small magnetism, which can be ignored), it will not be magnetized, so there is almost no magnetic force at this time, and it can be easily removed from the steel surface.

[0042] like Figure 1-2 As shown, in the technical solution of the first embodiment, the height adjustment mechanism 14 adopts a precision lifting platform. A precision manual lifting platform of model PT-SD408 can be selected, which is characterized by adopting a scissor-shaped lifting support, a precision-ground screw drive, and a double-guide rail five-axis positioning mechanism to ensure smooth and comfortable movement, high precision, and large load-bearing capacity; the upper and lower surfaces are designed with multiple holes, which are highly applicable and can be used as installation surfaces; equipped with a locking handwheel, safe and reliable; the bottom and the table have connection holes with standard hole spacing, which is convenient for combination with other series of products.

[0043] like Figure 1 to Figure 3 As shown, in the second aspect, an embodiment of a method for detecting the thickness of an edge is provided, wherein the method for detecting the thickness of an edge adopts a device for detecting the thickness of an edge, and comprises the steps of:

[0044] S1, arranging a plurality of edge thickness detection devices 1 along the outer contour of the workpiece 2 to be detected, and fixing the edge thickness detection devices 1 on the detection table 3 through the mounting seat 13;

[0045] S2, adjusting the distance between the first laser distance measuring sensor 10 and the second laser distance measuring sensor 11 of the edge thickness detection device 1 by the height adjustment mechanism 14 to adapt to the height position of the workpiece 2 to be detected;

[0046] S3, opening the steering mechanism 12, making the first clamping arm 120 vertical, so as to facilitate the placement of the workpiece 2 to be inspected;

[0047] S4, fix the workpiece 2 to be inspected on the inspection table 3 through the limiting mechanism 4;

[0048] S5, closing the steering mechanism 12 to make the first clamping arm 120 horizontal;

[0049] S6, detecting the edge thickness of the workpiece 2 to be detected by the first laser distance measuring sensor 10 and the second laser distance measuring sensor 11.

[0050] In the technical solution of the first embodiment, in S4, a pad is placed between the detection platform 3 and the workpiece 2 to be detected, so that the workpiece 2 to be detected is raised. The pad is placed between the detection platform 3 and the workpiece 2 to be detected, and its functions are: first, to reduce the collision between the workpiece 2 to be detected and the detection platform 3, because the pad can be made of plastic or wood, which has a good buffering effect and avoids the bump of the workpiece 2 to be detected; second, the workpiece 2 to be detected is raised. Since the mounting seat 13 also has a certain height, it is impossible to make the second laser ranging sensor 11 located at the lowest point of the detection platform 3, so the workpiece 2 to be detected is raised to offset the height of the mounting seat 13.

[0051] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0052] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A device for detecting the thickness of an edge, comprising a first laser distance measuring sensor (10) and a second laser distance measuring sensor (11), characterized in that: Also includes: A steering mechanism (12), wherein a first clamping arm (120) is movably disposed on the steering mechanism (12), the first clamping arm (120) can realize two states, vertical and horizontal, and the first laser distance measuring sensor (10) is disposed on the first clamping arm (120); A mounting seat (13), a second clamping arm (130) extending outwardly from a side of the mounting seat (13) corresponding to the first clamping arm (120), and the second laser ranging sensor (11) is arranged on the second clamping arm (130); A height adjustment mechanism (14) is arranged between the steering mechanism (12) and the mounting seat (13) and is used to adjust the distance between the first laser distance measuring sensor (10) and the second laser distance measuring sensor (11).

2. The edge thickness detection device according to claim 1, characterized in that: The steering mechanism (12) comprises a first clamping arm (120), a base (121), a connecting rod (122) and a handle bar (123) for forming a four-bar mechanism, wherein one end of the first clamping arm (120) away from the first laser ranging sensor (10) is hinged to the base (121) and the handle bar (123), respectively, the handle bar (123) is hinged to one end of the connecting rod (122), and the other end of the connecting rod (122) is hinged to the base (121).

3. The edge thickness detection device according to claim 2, characterized in that: The first clamping arm (120) is L-shaped, the upper portion of the first clamping arm (120) is hinged to one end of the handle rod (123), and the lower portion of the first clamping arm (120) is hinged to one end of the base (121).

4. The edge thickness detection device according to claim 2, characterized in that: The base (121) is arranged above the height adjustment mechanism (14).

5. The edge thickness detection device according to claim 2, characterized in that: The other end of the handle rod (123) is extended to be provided with an operating handle.

6. The edge thickness detection device according to claim 1, characterized in that: The mounting seat (13) adopts a switch-type magnetic seat.

7. The edge thickness detection device according to claim 1, characterized in that: The height adjustment mechanism (14) adopts a precision lifting platform.

8. A method for detecting edge thickness, characterized in that: The hemming thickness detection method adopts the hemming thickness detection device according to any one of claims 1 to 7, comprising the steps of: S1, arranging a plurality of edge thickness detection devices (1) along the outer contour of a workpiece (2) to be detected, and fixing the edge thickness detection devices (1) on a detection table (3) via a mounting seat (13); S2, adjusting the distance between the first laser distance measuring sensor (10) and the second laser distance measuring sensor (11) of the edge thickness detection device (1) through a height adjustment mechanism (14) to adapt to the height position of the workpiece (2) to be detected; S3, opening the steering mechanism (12) to make the first clamping arm (120) vertical, so as to facilitate the placement of the workpiece (2) to be inspected; S4, fixing the workpiece to be inspected (2) on the inspection table (3) through a limiting mechanism (4); S5, closing the steering mechanism (12) to make the first clamping arm (120) horizontal; S6, detecting the edge thickness of the workpiece (2) to be detected by using the first laser distance measuring sensor (10) and the second laser distance measuring sensor (11).

9. The method for detecting the thickness of the hemming according to claim 8, characterized in that: In S4, a pad is placed between the inspection platform (3) and the workpiece (2) to be inspected, so that the workpiece (2) to be inspected is raised.

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