A device for slider end face profile measurement

Abstract

The application discloses a device for slider end face profile measurement, which comprises a conveying mechanism for automatic feeding of workpieces, a visual detection device comprising a mounting bracket and a shooting device mounted on the mounting bracket, the bracket being fixed on the conveying mechanism, a magnetic attraction rotating device mounted on the mounting bracket and arranged below the shooting device, the magnetic attraction rotating device comprising a rotating drive and a magnetic attraction device mounted on the rotating drive. The conveying mechanism automatically conveys the workpieces to be measured, and when the workpieces are conveyed to the visual detection device, the conveying mechanism stops, while the magnetic attraction device in the magnetic attraction rotating device starts to adsorb and fix the workpieces to be measured, the shooting device starts to take the first photo of the workpieces to be measured, and then the rotating drive starts to drive the magnetic attraction device to rotate to take photos of other surfaces of the workpieces to be measured in sequence. The overall structure is compact, the slider can be measured in full automation, and the measurement efficiency and precision of the slider can be improved.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology, and in particular to a device for measuring the contour of a slider end face. Background Technology

[0002] After grinding, cleaning, and drying, the slider in a standard guide rail assembly needs to have its end face groove profile measured. The purpose of this measurement is to ensure that the slider's groove meets the required machining tolerances. If the measurement results are unsatisfactory, the slider may be downgraded or scrapped depending on whether it is too large or too small.

[0003] The existing method for measuring the end face of a slider involves workers selecting a standard gauge block based on the dimensions of the corresponding slider model. After selecting the gauge block, they set the gauge value and then use a measuring rod to compare the gauge reading with the slider's end face groove. Finally, they calculate the measurement value with an accuracy of 0.01mm. The entire process is complex, fully manual, inefficient, slow, and prone to errors. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a device for measuring the contour of a slider end face, which can improve the measurement efficiency and accuracy of the slider.

[0005] An apparatus for measuring the contour of a slider end face according to an embodiment of the present invention includes:

[0006] Conveying mechanism, used for automatic loading of workpieces;

[0007] A visual inspection device, comprising a mounting bracket and an imaging device mounted on the mounting bracket, the bracket being fixed to a conveying mechanism;

[0008] A magnetic rotating device is mounted on a mounting bracket and positioned below the shooting device. The magnetic rotating device includes a rotating drive and a magnetic device mounted on the rotating drive.

[0009] An apparatus for measuring the contour of a slider end face according to an embodiment of the present invention has at least the following beneficial effects: the conveying mechanism automatically conveys the workpiece to be measured; when the workpiece is conveyed to the vision inspection device, the conveying mechanism stops; simultaneously, the magnetic suction device in the magnetic suction rotation device is activated to adsorb and fix the workpiece to be measured; the imaging device is activated and takes an initial picture of the workpiece to be measured; then the rotation drive is activated to drive the magnetic suction device to rotate, and sequentially take pictures of the other faces of the workpiece to be measured. The overall structure is compact, and the fully automated slider measurement improves the measurement efficiency and accuracy of the slider.

[0010] According to an embodiment of the present invention, a device for measuring the contour of a slider end face is provided. The vision inspection device further includes a surface structured light projector, which is mounted on a mounting bracket. The surface structured light projector uses structured light to illuminate the workpiece to be measured. Structured light three-dimensional imaging has the advantages of speed, accuracy, and high stability. Compared with traditional two-dimensional imaging, it can obtain depth information through three-dimensional imaging, allowing for the measurement of contour dimensions at different depths as needed. Before use, the camera is calibrated to obtain its intrinsic and extrinsic parameters. During three-dimensional imaging, structured light is projected onto the surface of the object, and then the camera obtains a structured light stripe image of the object's surface from another angle. Based on the properties of similar triangles in imaging triangulation, three-dimensional modeling is performed to generate three-dimensional data of the slider and a three-dimensional point cloud. Edges are extracted from the slider point cloud data to obtain three-dimensional data of the slider edge contour for measurement.

[0011] According to an embodiment of the present invention, an apparatus for measuring the contour of a slider end face includes an imaging device connected to a surface structured light projector. A connection is provided between the imaging device and the surface structured light projector. The imaging device and a connecting member are movably connected. Through the movable connection between the imaging device and the connecting member, the tilt angle of the imaging device can be changed to adapt to imaging under different fields of view.

[0012] According to an embodiment of the present invention, a device for measuring the contour of a slider end face is provided. The visual inspection device further includes a lifting device mounted on a mounting bracket, and a magnetic rotatable device connected to the lifting device.

[0013] According to an embodiment of the present invention, an apparatus for measuring the contour of a slider end face includes a lifting device comprising a lifting drive and a lead screw connected to the lifting drive. The end of the lead screw away from the lifting drive is connected to a rotary drive. The lead screw transmission is smooth and highly accurate, which can ensure the imaging quality of the workpiece to be measured.

[0014] According to an embodiment of the present invention, a device for measuring the contour of a slider end face is provided, wherein a lead screw and a rotary drive are connected by a connecting assembly, the connecting assembly including a transmission block mounted on the lead screw and a connecting bracket connected at one end to the transmission block, and the rotary drive is connected to the other end of the connecting bracket.

[0015] According to an embodiment of the present invention, a device for measuring the contour of a slider end face is provided, wherein a slider is provided on the side of the connecting bracket near the mounting bracket, and the mounting bracket is provided with a guide rail, and the slider is connected to the guide rail. The cooperation between the slider and the guide rail serves a guiding function, ensuring the positional accuracy of the lifting device during vertical movement, and helping to ensure the measurement accuracy of the workpiece to be measured.

[0016] According to an embodiment of the present invention, an apparatus for measuring the contour of a slider end face is further provided with a positioning mechanism. The positioning mechanism is mounted on a conveying mechanism and is located between the input end of the conveying mechanism and the entrance of the vision inspection device. The positioning mechanism is used to position and center the workpiece to be measured on the conveying mechanism before or after it enters the imaging range, ensuring that the workpiece can be picked up by the magnetic suction device and ensuring smooth measurement.

[0017] According to an embodiment of the present invention, an apparatus for measuring the contour of a slider end face includes a magnetic suction device comprising a magnetic suction drive and a magnetic suction block mounted on the magnetic suction drive, and a positioning mechanism that works in conjunction with the magnetic suction device. The magnetic suction drive is used to move the magnetic suction block back and forth. In this application, the positioning mechanism works in conjunction with the magnetic suction device, completing the positioning and alignment of the workpiece to be measured while simultaneously allowing the magnetic suction device to grasp the workpiece, effectively reducing the number of steps in the apparatus and improving efficiency.

[0018] An apparatus for measuring the contour of a slider end face according to an embodiment of the present invention further includes a demagnetizing device disposed at the output end of the conveying mechanism. After the visual inspection process is completed, the demagnetizing device is used to remove any remaining magnetism from the magnetic clamping.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is an isometric view of a device for measuring the contour of a slider end face according to an embodiment of the present invention;

[0022] Figure 2 This is a side view of a device for measuring the contour of a slider end face according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] Conveying mechanism 1;

[0025] Mounting bracket 2;

[0026] Filming device 3;

[0027] Rotary drive 4;

[0028] 5. Surface structured light projector;

[0029] Connector 6;

[0030] Lifting drive 7;

[0031] Lead screw 8;

[0032] Transmission block 9;

[0033] Connecting bracket 10;

[0034] Slider 11;

[0035] Guide rails 12; 18

[0036] Magnetic drive 13;

[0037] Magnetic block 14;

[0038] Demagnetizing device 15;

[0039] Positioning cylinder 16;

[0040] Fixed block 17;

[0041] Workpiece 18. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0044] In the description of the invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If the terms "first" and "second" are used, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0045] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0046] Reference Figure 1 and Figure 2This invention provides an apparatus for measuring the end face contour of a slider 11, including a conveying mechanism 1 for automatically feeding a workpiece 18; a vision inspection device including a mounting bracket 2 and an imaging device 3 mounted on the mounting bracket 2, the bracket being fixed to the conveying mechanism 1; and a magnetic suction rotating device mounted on the mounting bracket 2 and positioned below the imaging device 3, the magnetic suction rotating device including a rotation drive 4 and a magnetic suction device mounted on the rotation drive 4. The conveying mechanism 1 automatically conveys the workpiece 18 to be measured. When the workpiece 18 is conveyed to the vision inspection device, the conveying mechanism 1 stops. Simultaneously, the magnetic suction device in the magnetic suction rotating device is activated, attracting and fixing the workpiece 18 to be measured. The imaging device 3 is activated and takes an initial photograph of the workpiece 18. Then, the rotation drive 4 is activated to rotate the magnetic suction device, sequentially taking photographs of the other faces of the workpiece 18. The overall structure is compact, and the fully automated measurement of the slider 11 improves the measurement efficiency and accuracy of the slider 11.

[0047] The imaging device 3 in this application is a monocular industrial camera.

[0048] The conveying mechanism 1 in this application is a conveyor belt.

[0049] According to some embodiments of this application, the visual inspection device further includes a surface structured light projector 5, which is mounted on the mounting bracket 2. The surface structured light projector 5 uses structured light to illuminate the workpiece 18 to be measured. Structured light 3D imaging has the advantages of speed, accuracy, and high stability. Compared with traditional 2D imaging, it can obtain depth information through 3D imaging, allowing for the measurement of contour dimensions at different depths as needed. Before use, the camera undergoes camera calibration to obtain its intrinsic and extrinsic parameters. During 3D imaging, structured light is projected onto the object surface, and the camera obtains a structured light stripe image of the object surface from another angle. Based on the properties of similar triangles in imaging triangulation, 3D modeling is performed to generate 3D data of the slider 11 and a 3D point cloud is generated. Edges are extracted from the point cloud data of the slider 11 to obtain 3D data of the slider 11 edge contour for measurement.

[0050] According to some embodiments of this application, the imaging device 3 is connected to the surface structured light projector 5, and a connection is provided between the imaging device 3 and the surface structured light projector 5. The imaging device 3 and the connector 6 are movably connected. Through the movable connection between the imaging device 3 and the connector 6, the tilt angle of the imaging device 3 can be changed to adapt to imaging under different fields of view.

[0051] According to some embodiments of this application, the visual inspection device further includes a lifting device mounted on a mounting bracket 2. A magnetic rotary device is connected to the lifting device. The lifting device includes a lifting drive 7 and a lead screw 8 connected to the lifting drive 7. One end of the lead screw 8, away from the lifting drive 7, is connected to a rotary drive 4. The lead screw 8 provides smooth and high-precision transmission, ensuring the imaging quality of the workpiece 18 to be measured. The lead screw 8 and the rotary drive 4 are connected via a connecting assembly. The connecting assembly includes a transmission block 9 mounted on the lead screw 8 and a connecting bracket 10, one end of which is connected to the transmission block 9. The rotary drive 4 is connected to the other end of the connecting bracket 10.

[0052] The lifting drive 7 in this application is a stepper motor.

[0053] According to some embodiments of this application, a slider 11 is provided on the side of the connecting bracket 10 near the mounting bracket 2, and the mounting bracket 2 is provided with a guide rail 12, with the slider 11 connected to the guide rail 12. The cooperation between the slider 11 and the guide rail 12 serves a guiding function, ensuring the positional accuracy of the lifting device during vertical movement, which helps to ensure the measurement accuracy of the workpiece 18 to be measured.

[0054] According to some embodiments of this application, a positioning mechanism is also provided. The positioning mechanism is installed on the conveying mechanism 1 and is located between the input end of the conveying mechanism 1 and the entrance of the vision inspection device. The positioning mechanism is used to position and center the workpiece 18 to be measured on the conveying mechanism 1 before or after it enters the imaging range, ensuring that the workpiece 18 to be measured can be picked up by the magnetic attraction device and ensuring that the measurement work is carried out smoothly.

[0055] According to some embodiments of this application, this application provides an embodiment in which a magnetic suction device includes a magnetic suction drive and a magnetic suction block 14 mounted on the magnetic suction drive, and a positioning mechanism is linked and cooperates with the magnetic suction device. The magnetic suction drive is used to move the magnetic suction block 14 back and forth. In this application, the positioning mechanism works in conjunction with the magnetic suction device, completing the positioning and alignment of the workpiece 18 to be measured while simultaneously grasping the workpiece 18 by the magnetic suction device, effectively reducing the number of steps in the device and improving efficiency.

[0056] The positioning mechanism includes a positioning cylinder 16 and a fixing block 17 mounted on the positioning cylinder 16.

[0057] Both the magnetic drive and the positioning cylinder 16 in this application are cylinders.

[0058] When the workpiece 18 to be measured reaches the detection position, the positioning cylinder 16 and the magnetic suction cylinder start simultaneously. The positioning cylinder 16 drives the fixing block 17 to move towards the magnetic suction device, while the magnetic suction drive drives the magnetic suction block 14 to move towards the fixing block 17 until the workpiece 18 to be measured is clamped and the workpiece 18 to be measured is attracted and fixed on the magnetic suction block 14.

[0059] The magnetic block 14 in this application is an electromagnet.

[0060] According to some embodiments of this application, this application provides another embodiment (not shown in the figure), in which two positioning mechanisms are provided on the conveying mechanism 1. The workpiece 18 to be measured first completes the positioning and centering process at the input end of the conveying mechanism 1, and then continues to be conveyed to the detection position, and the magnetic suction device is activated to pick up the workpiece 18.

[0061] According to some embodiments of this application, a demagnetizing device 15 is also included, which is disposed at the output end of the conveying mechanism 1. After the visual inspection process is completed, the demagnetizing device 15 is used to remove the magnetism remaining during magnetic clamping.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A device for measuring the contour of a slider end face, characterized in that, include: A conveying mechanism for automatically feeding workpieces; A visual inspection device, comprising a mounting bracket and an imaging device mounted on the mounting bracket, wherein the mounting bracket is fixed to the conveying mechanism; A magnetic attraction rotating device is mounted on the mounting bracket and positioned below the shooting device. The magnetic attraction rotating device includes a rotation drive and a magnetic attraction device mounted on the rotation drive. A positioning mechanism is mounted on the conveying mechanism and is located between the input end of the conveying mechanism and the inlet of the vision inspection device. The positioning mechanism includes a positioning cylinder and a fixing block mounted on the positioning cylinder. The magnetic attraction device includes a magnetic attraction drive and a magnetic attraction block mounted on the magnetic attraction drive, and the positioning mechanism is linked and cooperates with the magnetic attraction device. When the workpiece to be measured reaches the detection position, the positioning cylinder of the positioning mechanism and the magnetic drive of the magnetic suction device are activated simultaneously. The positioning cylinder drives the fixed block to move toward the magnetic suction device, while the magnetic drive drives the magnetic block to move toward the fixed block, until the workpiece to be measured is clamped and attracted and fixed on the magnetic block.

2. The device for measuring the contour of a slider end face according to claim 1, characterized in that, The visual inspection device also includes a surface structured light projector, which is mounted on the mounting bracket.

3. The device for measuring the contour of a slider end face according to claim 2, characterized in that, The shooting device is connected to the surface structured light projector, and a connecting member is provided between the shooting device and the surface structured light projector. The shooting device and the connecting member are movably connected.

4. The device for measuring the contour of a slider end face according to claim 1, characterized in that, The visual inspection device also includes a lifting device, which is mounted on the mounting bracket, and the magnetic rotating device is connected to the lifting device.

5. The device for measuring the contour of a slider end face according to claim 4, characterized in that, The lifting device includes a lifting drive and a lead screw connected to the lifting drive, with one end of the lead screw away from the lifting drive connected to the rotary drive.

6. The device for measuring the contour of a slider end face according to claim 5, characterized in that, The lead screw and the rotary drive are connected by a connecting assembly, which includes a transmission block mounted on the lead screw and a connecting bracket connected at one end to the transmission block. The rotary drive is connected to the other end of the connecting bracket.

7. The device for measuring the contour of a slider end face according to claim 6, characterized in that, The connecting bracket is provided with a slider on the side near the mounting bracket, the mounting bracket is provided with a guide rail, and the slider is connected to the guide rail.

8. The device for measuring the contour of a slider end face according to claim 1, characterized in that, It also includes a demagnetizing device, which is located at the output end of the conveying mechanism.

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