Measuring head for measuring end face and plane positioning of workpiece to be detected

Abstract

The utility model relates to a measuring head used for measuring positioning of an end face and a to-be-detected workpiece plane. The measuring head comprises a measuring head body and a fixing ring. The bottom end of the measuring head body is provided with a detection port. The fixing ring and the detection port are coaxially arranged, the upper ring surface of the fixing ring is fixedly connected with the lower end surface of the measuring head body, and the fixing ring is detachably connected with a plurality of distance sensors in the circumferential direction of the fixing ring. According to the utility model, the plurality of distance sensors are arranged around the periphery of the detection port, so that the relative position between the plane where the detection port is located and the to-be-detected plane of the workpiece corresponding to the detection port can be judged according to numerical values fed back by the plurality of distance sensors; the technical problem that a traditional measuring head is slow in speed and low in precision in the process of keeping the distance and parallelism between the measuring head and a workpiece in a manual measurement mode is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nondestructive testing equipment field more specifically is related to a kind of measurement head for measuring end face and the plane positioning of workpiece to be detected. BACKGROUND

[0002] In prior art, terahertz detection is usually used for the detection of dielectric materials such as foam, ceramic, plastic, composite material and semiconductor, and is mainly used for detecting defects such as debonding, delamination and inclusion inside workpiece, as well as spatial distribution of characteristics such as material quality, density and water content, and has the characteristics of non-contact, harmless to workpiece and human body, and can detect the characteristics inside workpiece.

[0003] To ensure measurement accuracy, the measurement end face of the measurement head needs to be parallel to and at a fixed distance from the workpiece to be detected. In the process of maintaining the distance and parallelism, the traditional measurement head generally uses tools such as calipers, rulers and protractors to determine the position of the measurement head by manual measurement. This method is slow, low in accuracy and not suitable for narrow spaces or environments where operators cannot enter.

[0004] Therefore, how to provide a new measurement head for measuring the end face and the plane positioning of the workpiece to be detected, which can detect the distance and parallel relationship between the detection head and the workpiece, and also adjust the position between the two through the control end, is a problem that needs to be solved by those skilled in the art. SUMMARY

[0005] Therefore, the utility model provides a kind of measurement head for measuring the end face and the plane positioning of the workpiece to be detected, to solve the technical problem of slow speed and low accuracy in the process of maintaining the distance and parallelism between the traditional measurement head and the workpiece by manual measurement.

[0006] A measurement head for measuring the end face and the plane positioning of the workpiece to be detected, comprising:

[0007] The measurement head body has a detection port at the bottom end.

[0008] The fixed ring is coaxially arranged with the detection port, and the upper ring surface of the fixed ring is tightly connected with the lower end surface of the measurement head body. A plurality of distance sensors are detachably connected to the fixed ring in the circumferential direction.

[0009] According to the above technical solution, the utility model is provided with a plurality of distance sensors arranged around the detection port. The relative position between the plane where the detection port is located and the detection plane of the corresponding workpiece can be determined according to the values fed back by the plurality of distance sensors, and the utility model has the characteristics of high accuracy and fast recognition speed.

[0010] The fixing ring is preferably provided with a plurality of mounting holes along the axial direction thereof, and the distance sensor is detachably connected in the mounting holes.

[0011] The application further comprises a terahertz emitter, which is installed in the measuring head body and has an output port arranged opposite to the detection port.

[0012] The application further comprises a camera, which has a fixed end fastened to the outer sidewall of the measuring head body and is arranged obliquely with a camera end arranged opposite to the detection area of the terahertz emitter.

[0013] The distance sensor is preferably a laser range finder.

[0014] The number of the mounting holes and the laser range finder is preferably three, which are arranged uniformly along the axial direction of the fixing ring.

[0015] The application further comprises a mechanical arm, and the top end of the measuring head body is fastened to a mounting block, and the execution end of the mechanical arm is detachably connected to the mounting block.

[0016] The application further comprises a controller, which is electrically connected to the terahertz emitter, the laser range finder and the mechanical arm.

[0017] The application further comprises a display, which is electrically connected to the controller and the camera.

[0018] The display has a touch screen, and the display interface of the display has a distance determination indication bar, an angle determination picture and a mechanical arm adjustment button.

[0019] Compared with the prior art, the application discloses a measuring head for measuring the positioning of an end face and a workpiece to be detected, which has the following advantages: the circular ring fastened to the bottom end of the measuring head body is used to position and install the distance sensor, which is beneficial to improve the detection accuracy of the measuring head and the repeated positioning accuracy of the distance sensor during the dismounting and mounting process. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 A structural schematic view of the measuring head for measuring the positioning of an end face and a workpiece to be detected is provided.

[0021] Fig. 2 A bottom view of the measuring head for measuring the positioning of an end face and a workpiece to be detected is provided.

[0022] Fig. 3 An interface schematic view of the display is provided.

[0023] Wherein: 1-measuring head body; 2-distance sensor; 3-fixed ring; 4-camera; 5-display; 11-detection port; 12-mounting block; 51-distance determination indication bar; 52-angle determination picture; 53-mechanical arm adjusting button. DETAILED DESCRIPTION

[0024] The principles and characteristics of the present application are described below in conjunction with the accompanying drawings, and the examples are only used to explain the present application and not to limit the scope of the present application.

[0025] Referring to the accompanying drawings Figs. 1-3 The embodiment of the present application discloses a kind of for measuring end face and the plane positioning of workpiece to be detected measuring head, comprising: measuring head body 1 and fixed ring 3;

[0026] The bottom end of measuring head body 1 has detection port 11;

[0027] Fixed ring 3 is coaxially arranged with detection port 11, and the upper ring surface of fixed ring 3 is tightly connected with the lower end surface of measuring head body 1, and a plurality of distance sensors 2 are detachably connected on fixed ring 3 along the circumferential direction thereof.

[0028] In some embodiments, a plurality of mounting holes are provided in fixed ring 3 along the axial direction thereof, and the distance sensors 2 are detachably connected in the mounting holes.

[0029] In some other embodiments, a terahertz transmitter is further included, which is installed inside measuring head body 1, and the output port thereof is arranged opposite to detection port 11.

[0030] In one embodiment, a camera 4 is further included, and the fixed end of camera 4 is tightly connected with the outer side wall of measuring head body 1, and camera 4 is obliquely arranged with the imaging end thereof arranged opposite to the detection area of terahertz transmitter. Thus, the image information of the detection area can be captured in real time by camera 4, which is convenient for the operator to observe the workpiece state and detection condition in the measurement process and to discover abnormalities in time.

[0031] In one embodiment, the distance sensor 2 is a laser range finder. Laser ranging has the advantages of high precision, fast response and strong anti-interference ability, and can quickly and accurately measure the distance between the measuring head and the workpiece plane, providing reliable data support for positioning measurement and ensuring the accuracy of the measurement results.

[0032] In some embodiments, the number of mounting holes and laser range finders is three, which are uniformly arranged along the axis of fixed ring 3. Thus, the function of plane detection positioning is realized with the least number of laser range finders without affecting the plane positioning of the measuring head, which reduces the manufacturing cost of the product.

[0033] In this embodiment, a mechanical arm is further included, the top end of the measuring head body 1 is fixedly connected with a mounting block 12, and the execution end of the mechanical arm is detachably connected with the mounting block 12. In this way, the addition of the mechanical arm expands the application scenarios of the measuring head, so that the measuring head can adapt to the measurement requirements of various complex workpieces and different positions, such as multi-point measurement of large workpieces, measurement of space-limited areas, and the like, thereby enhancing the practicability of the measuring head in the field of industrial automation.

[0034] In some specific embodiments, a controller is further included, and the controller is electrically connected with the terahertz emitter, the laser range finder and the mechanical arm. In this way, through the cooperation of the controller and the mechanical arm, the measuring head can realize automatic measurement operation, the mechanical arm can accurately move the measuring head to the specified position of the workpiece to be detected according to a preset program or operation instruction, thereby greatly improving the measurement efficiency and reducing the error and labor intensity of manual operation.

[0035] In some specific embodiments, a display 5 is further included, and the display 5 is electrically connected with the controller and the camera 4.

[0036] In some specific embodiments, the display 5 has a touch screen, and the display interface of the display 5 has a distance determination indication bar 51, an angle determination picture 52 and a mechanical arm adjustment button 53.

[0037] Specifically, the angle determination picture 52 displays the picture recorded by the camera in real time, and a crosshair is displayed in the picture, and a limit circle indicating that the angle is qualified is arranged at the center of the crosshair. The crosshair and the limit circle are reference marks on a reference plane parallel to the detection port 11 simulated by the controller. The controller simulates the center point of the three points in real time on the angle determination picture 52 according to the values fed back by the three laser range finders. When the center point is located in the limit circle, it indicates that the angle deviation between the detected plane and the detection port 11 at this time is within the allowable range.

[0038] Specifically, the horizontal line in the middle of the determination indication bar 51 is a preset distance calibration line, and a herringbone virtual detection frame is displayed by sliding up and down along the determination indication bar 51. The herringbone virtual detection frame represents the distance between the plane on which the detection port 11 is located and the surface of the workpiece to be detected measured by the laser range finder. When the middle line of the herringbone virtual detection frame is below the distance calibration line, it indicates that the distance between the detection port 11 and the surface of the workpiece to be detected is too small, and vice versa.

[0039] More specifically, the distance between the detection port 11 and the surface of the workpiece to be detected needs to be adjusted after the plane of the workpiece to be detected is adjusted to be within the allowable angle deviation from the detection port 11 through the mechanical arm adjustment button 53 of the angle determination picture 52.

[0040] The specific principle and use method of the measuring head for positioning the end face and the surface of the workpiece to be detected provided in this embodiment are as follows:

[0041] 1. Adjust the detection port 11 of the measuring head to be approximately aligned with the position to be detected by visually adjusting the button 53 of the mechanical arm;

[0042] 2. Adjust the angle between the plane where the detection port 11 is located and the plane to be detected within the allowable angle deviation through the angle determination screen 52;

[0043] 3. Adjust the relative distance between the detection port 11 and the plane to be detected through the determination indicating bar 51 until the detection frame of the virtual Japanese character line coincides with the distance calibration line, and the center point is also in the limited circle;

[0044] 4. Turn on the terahertz emitter to detect the position to be detected.

[0045] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A measuring head for measuring the positioning of an end face with a plane of a workpiece to be examined, characterized in that Include: The measuring head body (1) has a detection port (11) at the bottom end; The fixed ring (3) is coaxially arranged with the detection port (11), and the upper ring surface of the fixed ring (3) is tightly connected with the lower end surface of the measuring head body (1). A plurality of distance sensors (2) are detachably connected to the fixed ring (3) along the circumference thereof.

2. The measuring head for measuring the positioning of the end face with the plane of the workpiece to be detected according to claim 1, characterized in that The fixed ring (3) is provided with a plurality of mounting holes along the circumference thereof, and the distance sensor (2) is detachably connected in the mounting hole.

3. The measuring head for measuring the positioning of the end face with the plane of the workpiece to be detected according to claim 2, characterized in that It also includes a terahertz emitter installed inside the measuring head body (1), and its output port is arranged opposite to the detection port (11).

4. The measuring head for measuring the positioning of the end face with the plane of the workpiece to be detected according to claim 3, characterized in that It also includes a camera (4), the fixed end of which is tightly connected with the outer side wall of the measuring head body (1), and the camera (4) is arranged obliquely and its camera end is arranged opposite to the detection area of the terahertz emitter.

5. The measuring head for measuring the positioning of the end face with the plane of the workpiece to be detected according to claim 4, characterized in that The distance sensor (2) is a laser range finder.

6. The measuring head for measuring the positioning of an end face with respect to a plane of a workpiece to be inspected according to claim 5, characterized in that The number of mounting holes and laser range finders is three, which are arranged uniformly along the axis of the fixed ring (3).

7. The measuring head for measuring the positioning of an end face with respect to a plane of a workpiece to be inspected according to claim 6, characterized in that It also includes a mechanical arm, and the top end of the measuring head body (1) is tightly connected with a mounting block (12), and the execution end of the mechanical arm is detachably connected with the mounting block (12).

8. The measuring head for measuring the positioning of an end face with respect to a plane of a workpiece to be inspected according to claim 7, characterized in that It also includes a controller, which is electrically connected with the terahertz emitter, the laser range finder and the mechanical arm.

9. The measuring head for measuring the positioning of an end face with respect to a plane of a workpiece to be inspected according to claim 8, characterized in that It also includes a display (5), which is electrically connected with the controller and the camera (4).

10. The measuring head for measuring the positioning of an end face with respect to a plane of a workpiece to be inspected according to claim 9, characterized in that The display (5) has a touch screen, and the display interface of the display (5) has a distance judgment indication bar (51), an angle judgment picture (52) and a mechanical arm adjusting button (53).

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