Workpiece measuring equipment and operation method

Abstract

The invention discloses workpiece measuring equipment and an operation method. The workpiece measuring equipment comprises a base, a horizontal table, a placement table, a measuring part, a displacement part and a control part, the horizontal table is mounted on the base; the placing table is installed on the horizontal table, a workpiece to be measured is suitable for being placed on the placing table, and the placing table is provided with first scale stripes; the measuring part comprises a size measuring sensor group and a flatness measuring sensor group; the displacement component is mounted on the horizontal table, and the size measurement sensor group and the flatness measurement sensor group are both mounted on the displacement component; the size measurement sensor group comprises a size measurement sensor and an auxiliary ruler, the size measurement sensor and the auxiliary ruler are oppositely arranged, the auxiliary ruler is cross-shaped, the synchronous measurement of the size and the surface flatness of a workpiece can be realized, the measurement precision and the measurement efficiency are improved, and a verification function is realized to reduce measurement errors.

Description

Technical Field

[0001] The present invention relates to a workpiece measuring device and an operation method thereof, belonging to the technical field of measuring devices. Background Art

[0002] In the field of mechanical manufacturing, the dimensional accuracy and surface flatness of workpieces are key indicators affecting the assembly quality. Traditional measurement methods mostly use manual tools such as calipers and micrometers for step-by-step detection, which have problems such as low efficiency and large human errors. Existing automated measurement devices usually use coordinate measuring machines or laser scanners. However, coordinate measuring machines require precise guides and complex programming, have high technical requirements for operators, and cannot synchronously obtain dimensional and flatness data. After retrieval, it is found that a Chinese patent with the publication number CN118089545B discloses an image measuring device for workpiece detection. In this patent, when starting the motor to rotate forward, the threaded sleeve is driven to rotate through belt transmission, and the threaded rod is pushed to move the detection glass from the initial upper left corner to the lower left corner for detection. Subsequently, when the coil is energized, the electromagnet attracts the magnet block to compress the spring, pulling the threaded rod to move the detection glass to the lower right corner. During this period, the buffer plate and the third spring buffer the impact. Then the motor rotates in reverse to drive the detection glass to the upper right corner for detection. Finally, when the coil is powered off, the spring resets to return the detection glass to the upper left corner. However, this patent only relies on image detection for a single parameter, lacks the ability to synchronously measure dimensions and flatness, and lacks a real-time calibration mechanism during the measurement process. Cumulative errors are likely to occur when the workpiece positioning is offset or the device vibrates. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a workpiece measuring device and an operation method thereof, which can realize the synchronous measurement of the workpiece size and surface flatness, improve the measurement accuracy and efficiency, and have a calibration function to reduce measurement errors.

[0004] To solve the above technical problem, the technical solution of the present invention is: A workpiece measuring device and an operation method thereof, comprising: A base; A horizontal platform, which is installed on the base; A placement platform, which is installed on the horizontal platform, and the workpiece to be measured is suitable for being placed on the placement platform. The placement platform is provided with first scale stripes; A measuring component, which includes a size measuring sensor group and a flatness measuring sensor group; A displacement component, which is installed on the horizontal platform, and both the size measuring sensor group and the flatness measuring sensor group are installed on the displacement component; The dimension measurement sensor group includes a dimension measurement sensor and an auxiliary scale. The dimension measurement sensor and the auxiliary scale are arranged opposite to each other. A second scale stripe is provided on the surface of the auxiliary scale facing the dimension measurement sensor. The dimension measurement sensor is adapted to sense the second scale stripe to obtain the height dimension data of the workpiece. The flatness measurement sensor group includes a laser probe. The laser probe is adapted to scan the surface of the workpiece to obtain the surface flatness data of the workpiece. A control component, the control component includes a controller. The controller is installed on the horizontal platform. The controller is communicatively connected with the displacement component and the measurement component. The controller is adapted to control the displacement component to drive the measurement component to move in a three-dimensional coordinate system. The dimension measurement sensor is adapted to transmit the acquired dimension data to the controller. The laser probe is adapted to transmit the acquired flatness data to the controller.

[0005] Further, in order to improve the accuracy and reliability of the measurement, a first working cavity is provided in the horizontal platform. A leveling mechanism is provided in the first working cavity. The leveling mechanism includes a horizontal sensor and a leveling telescopic rod. Both the horizontal sensor and the leveling telescopic rod are installed in the first working cavity. The movable end of the leveling telescopic rod moves outside the first working cavity. A leveling support foot is provided at the movable end of the leveling telescopic rod. Both the horizontal sensor and the leveling telescopic rod are communicatively connected with the controller.

[0006] Further, in order to prevent the workpiece from moving or sliding during the measurement, an anti-slip pad is provided on the placement table. At least one L-shaped fixing block is provided at the anti-slip pad.

[0007] Further, the displacement component includes a displacement base, an X-axis moving component, a Y-axis moving component, and a Z-axis moving component; The displacement base is installed on the horizontal platform. The displacement base is provided with a sliding groove and an installation cavity; The X-axis moving component includes an X-axis moving seat and an X-axis displacement driving member. The X-axis moving seat is slidably fitted in the sliding groove through at least one first guide rail slider pair; Wherein, the first guide rail slider pair includes: First guide rails installed on both sides of the sliding groove; First sliders installed on both sides of the X-axis moving seat; The X-axis displacement driving member is installed in the installation cavity. The movable end of the X-axis displacement driving member is connected to the X-axis moving seat.

[0008] Further, the Y-axis moving component includes a Y-axis moving seat and a Y-axis displacement driving member; The Y-axis moving seat is slidably fitted on the X-axis moving seat through at least one second guide rail slider pair; Wherein, the second guide rail slider pair includes: A second guide rail installed on the X-axis moving seat; A second slider installed at the bottom of the Y-axis moving seat; The Y-axis displacement driving member is installed on the X-axis moving seat, and the movable end of the Y-axis displacement driving member is connected to the Y-axis moving seat.

[0009] Further, the Z-axis moving assembly includes a Z-axis moving seat, a Z-axis displacement driving member and a connecting seat; The connecting seat is installed at the top end of the Y-axis moving seat; The Z-axis moving seat is slidably fitted on the connecting seat through at least one third guide rail slider pair; Wherein, the third guide rail slider pair includes: A third guide rail installed on the connecting seat; A third slider installed on the Z-axis moving seat; The Z-axis displacement driving member is installed on the connecting seat, and the movable end of the Z-axis displacement driving member is connected to the Z-axis moving seat; An installation seat is provided at the top end of the Z-axis moving seat, and the dimensional measurement sensor, the auxiliary scale and the laser probe are all installed on the installation seat.

[0010] Further, in order to automatically scan and identify the three-dimensional contour of the workpiece, a workpiece measuring device further includes a path planning component. The path planning component includes a scanning camera, the scanning camera is communicatively connected to the controller, the scanning camera is installed on the X-axis moving seat through a connecting bracket, the scanning camera is adapted to scan the workpiece and the first scale stripes on the placement table to obtain three-dimensional contour data of the workpiece and transmit the three-dimensional contour data to the controller, and the controller forms a measurement trajectory according to the three-dimensional contour data.

[0011] Further, for the accuracy of the measurement trajectory, the path planning component further includes a calibration probe. The calibration probe is installed on the installation seat, and a pressure sensor is provided at the end of the calibration probe. The pressure sensor is adapted to detect the contact pressure with the surface of the workpiece; After the controller generates the measurement trajectory, the calibration probe moves along the measurement trajectory and contacts the contact points on the surface of the workpiece. The pressure sensor feeds back the contact pressure data to the controller in real time, and at the same time the controller records the three-dimensional coordinates of the contact points. The controller compares the actual coordinates obtained by the calibration probe with the theoretical coordinates in the three-dimensional contour data generated by the scanning camera. If the deviation exceeds the preset threshold, it automatically corrects and generates a new measurement trajectory. The moving path of the calibration probe is staggered from the measurement paths of the dimensional measurement sensor group and the laser probe by a certain distance.

[0012] Furthermore, the control component further includes a control housing, a display panel, and an audible and visual alarm. The control housing is mounted on the horizontal platform, and the controller, the display panel, and the audible and visual alarm are all mounted on the control housing. The display panel is a touch screen, which is electrically connected to the controller and is suitable for real-time displaying the dimensional data, flatness data, measurement trajectory, and three-dimensional contour model of the workpiece. The audible and visual alarm includes a red LED light and a buzzer. When the controller detects that the workpiece size is out of tolerance, the flatness is abnormal, or there is a sensor failure, it triggers the flashing of the corresponding color light and the buzzer alarm.

[0013] The present invention also provides an operation method for a workpiece measuring device, including the following steps: S1. Equipment initialization: The controller starts a self-check program. The leveling mechanism detects the inclination of the horizontal platform through the level sensor, and controls the leveling telescopic rod to expand and contract so that the leveling feet form a horizontal support until the level sensor feedbacks that the level error ≤ 0.02°. S2. Workpiece positioning: Place the workpiece on the anti-slip pad and abut it against the L-shaped fixing block. The controller controls the scanning camera to move along the X-axis to scan the workpiece and the first scale stripe, and generates a three-dimensional contour model including the length, width, and height reference edges through an identification algorithm. S3. Path planning: The controller generates a preliminary measurement trajectory according to the three-dimensional contour model and generates a plurality of random contact points on the length and width reference edges. S4. Measurement verification: The calibration probe moves along the preliminary measurement path and probes the random contact points. When the calibration probe passes through the contact point, normally the calibration probe will not deform when contacting the workpiece. When the preliminary measurement path does not conform to the actual workpiece, the calibration probe will deform and the pressure sensor at the end will have a relatively large pressure change. At this time, the controller will record the coordinates of the current contact point and correct the coordinate offset to form the final measurement path. S5. Start measurement: The displacement component drives the dimensional measurement sensor group to move to the measurement point according to the final measurement path. The dimensional measurement sensor scans the second scale stripe of the auxiliary scale to obtain the actual height data of the workpiece; the laser probe obtains the surface undulation data of the workpiece during the measurement process. S6. Data analysis: The controller combines the size measurement data and flatness data and maps them to a three-dimensional contour model to form a final three-dimensional model. S7. Abnormality handling: When it is detected that the size deviation exceeds the tolerance by ≥0.1 mm or the flatness value > 0.5 mm, an audible and visual alarm triggers a red warning. After the measurement is completed, the displacement component returns to the initial position and waits for the next measurement instruction.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects: In the present invention, the workpiece measuring device ensures the reference plane of the horizontal table through a leveling mechanism, scans the workpiece by a scanning camera to generate a three-dimensional contour and plan a measurement path. After the trajectory deviation is corrected by contact verification with a calibration probe, the displacement component drives the size measurement sensor and the laser probe to move along the surface of the workpiece, synchronously obtaining the height size data and the surface undulation data, and generating a three-dimensional model by combining the data processing of the controller, realizing efficient and accurate synchronous measurement and verification. Description of the Drawings

[0015] Figure 1 is a perspective view of a workpiece measuring device of the present invention Figure 1 ; Figure 2 is a perspective view of a workpiece measuring device of the present invention Figure 2 ; Figure 3 is a front view of a workpiece measuring device of the present invention; Figure 4 is a left view of a workpiece measuring device of the present invention; Figure 5 is a top view of a workpiece measuring device of the present invention; Figure 6 is a full sectional view of a workpiece measuring device of the present invention. Detailed Embodiments

[0016] In order to make the content of the present invention easier to be clearly understood, the present invention will be further described in detail below according to specific embodiments and in conjunction with the drawings. Embodiment 1

[0017] As Figures 1-6 shown, a workpiece measuring device includes: Base 1; Horizontal table 2, the horizontal table 2 is installed on the base 1; Placement table 3, the placement table 3 is installed on the horizontal table 2, the workpiece to be measured is suitable to be placed on the placement table 3, and the placement table 3 is provided with first scale stripes 31; Measuring component, the measuring component includes a dimensional measurement sensor group and a flatness measurement sensor group; Displacement component, the displacement component is installed on the horizontal platform 2, and both the dimensional measurement sensor 41 group and the flatness measurement sensor group are installed on the displacement component; The dimensional measurement sensor group includes a dimensional measurement sensor 41 and an auxiliary scale 42. The dimensional measurement sensor 41 and the auxiliary scale 42 are arranged oppositely. A second scale stripe is provided on the surface of the auxiliary scale 42 facing the dimensional measurement sensor 41. The dimensional measurement sensor 41 is adapted to sense the second scale stripe to obtain the height dimension data of the workpiece; The flatness measurement sensor group includes a laser probe 43. The laser probe 43 is adapted to scan the surface of the workpiece to obtain the surface flatness data of the workpiece; Control component, the control component includes a controller 61. The controller 61 is installed on the horizontal platform 2. The controller 61 is communicatively connected to the displacement component and the measuring component. The controller 61 is adapted to control the displacement component to drive the measuring component to move in a three-dimensional coordinate system. The dimensional measurement sensor 41 is adapted to transmit the obtained dimension data to the controller 61, and the laser probe 43 is adapted to transmit the obtained flatness data to the controller 61.

[0018] In this embodiment, both the first scale stripe and the second scale stripe are scale marks with equal intervals. The measurement range of the workpiece is usually a regular quadrilateral three-dimensional workpiece.

[0019] Specifically, as Figure 3 、 Figure 6 shown, a first working cavity 21 is provided in the horizontal platform 2. The first working cavity 21 is provided with a leveling mechanism. The leveling mechanism includes a horizontal sensor 211 and a leveling telescopic rod 212. Both the horizontal sensor 211 and the leveling telescopic rod 212 are installed in the first working cavity 21. The movable end of the leveling telescopic rod 212 moves outside the first working cavity 21. A leveling support foot 213 is provided at the movable end of the leveling telescopic rod 212. Both the horizontal sensor 211 and the leveling telescopic rod 212 are communicatively connected to the controller 61.

[0020] Specifically, as Figures 1-2 shown, an anti-slip pad 32 is provided on the placement table 3, and at least one L-shaped fixing block 33 is provided at the anti-slip pad 32.

[0021] In this embodiment, the settings of the anti-slip pad 32 and the L-shaped fixing block 33 can ensure the stability and safety of the workpiece during the measurement process. The anti-slip pad 32 prevents the workpiece from sliding on the placement table by increasing the friction force, while the L-shaped fixing block 33 can further fix the position of the workpiece and prevent the workpiece from moving during the measurement process, ensuring the accuracy of the measurement data.

[0022] Specifically, as Figures 1-6As shown, the displacement component includes a displacement base 51, an X-axis moving component, a Y-axis moving component, and a Z-axis moving component; The displacement base 51 is installed on the horizontal platform 2, and the displacement base 51 is provided with a sliding groove 511 and an installation cavity 512; The X-axis moving component includes an X-axis moving seat 521 and an X-axis displacement driving member 522. The X-axis moving seat 521 is slidably fitted in the sliding groove 511 through at least one first guide rail slider pair; Wherein, the first guide rail slider pair includes: The first guide rails 523 installed on both sides of the sliding groove 511; The first sliders 524 installed on both sides of the X-axis moving seat 521.

[0023] The X-axis displacement driving member 522 is installed in the installation cavity 512, and the movable end of the X-axis displacement driving member 522 is connected to the X-axis moving seat 521.

[0024] Specifically, as Figures 1-6 shown, the Y-axis moving component includes a Y-axis moving seat 531 and a Y-axis displacement driving member 532; The Y-axis moving seat 531 is slidably fitted on the X-axis moving seat 521 through at least one second guide rail slider pair; Wherein, the second guide rail slider pair includes: The second guide rail 533 installed on the X-axis moving seat 521; The second slider 534 installed at the bottom of the Y-axis moving seat 531; The Y-axis displacement driving member 532 is installed on the X-axis moving seat 521, and the movable end of the Y-axis displacement driving member 532 is connected to the Y-axis moving seat 531.

[0025] Specifically, as Figures 1-6 shown, the Z-axis moving component includes a Z-axis moving seat 541, a Z-axis displacement driving member 542, and a connecting seat 535; The connecting seat 535 is installed at the top end of the Y-axis moving seat 531; The Z-axis moving seat 541 is slidably fitted on the connecting seat 535 through at least one third guide rail 543 slider pair; Wherein, the third guide rail 543 slider pair includes: The third guide rail 543 installed on the connecting seat 535; The third slider 544 installed on the Z-axis moving seat 541; The Z-axis displacement driving member 542 is installed on the connecting seat 535, and the movable end of the Z-axis displacement driving member 542 is connected to the Z-axis moving seat 541; An installation seat 545 is provided at the top end of the Z-axis moving seat 541, and the dimension measurement sensor 41, the auxiliary scale 42, and the laser probe 43 are all installed on the installation seat 545.

[0026] In this embodiment, the X-axis displacement drive member 522, the Y-axis displacement drive member 532, and the Z-axis displacement drive member 542 can be drive motors.

[0027] Specifically, as Figures 1-4 shown, a workpiece measuring device further includes a path planning component. The path planning component includes a scanning camera 71. The scanning camera 71 is communicatively connected to the controller 61. The scanning camera 71 is mounted on the X-axis moving seat 521 through a connecting bracket. The scanning camera 71 is adapted to scan the workpiece and the first scale stripe 31 on the placing table 3 to obtain three-dimensional contour data of the workpiece and transmit the three-dimensional contour data to the controller 61. The controller 61 forms a measurement trajectory according to the three-dimensional contour data.

[0028] Specifically, as Figures 1-4 shown, the path planning component further includes a calibration probe 72. The calibration probe 72 is mounted on the mounting seat 545. A pressure sensor is provided at the end of the calibration probe 72. The pressure sensor is adapted to detect the contact pressure with the surface of the workpiece; After the controller 61 generates a measurement trajectory, the calibration probe 72 moves along the measurement trajectory and contacts the contact points on the surface of the workpiece. The pressure sensor real-time feeds back the contact pressure data to the controller 61. At the same time, the controller 61 records the three-dimensional coordinates of the contact points. The controller 61 compares the actual coordinates obtained by the calibration probe 72 with the theoretical coordinates in the three-dimensional contour data generated by the scanning camera 71. If the deviation exceeds a preset threshold, it automatically corrects and generates a new measurement trajectory; The moving path of the calibration probe 72 is staggered from the measurement paths of the dimensional measurement sensor 41 group and the laser probe 43 by a certain distance.

[0029] Specifically, as Figures 1-6 shown, the control component further includes a control housing 62, a display panel, and an audible and visual alarm. The control housing 62 is mounted on the horizontal table 2. The controller 61, the display panel, and the audible and visual alarm are all mounted on the control housing 62; The display panel is a touch screen. The display panel is electrically connected to the controller 61. The display panel is adapted to real-time display the dimensional data, flatness data, measurement trajectory, and three-dimensional contour model of the workpiece; The audible and visual alarm includes a red LED light and a buzzer. When the controller 61 detects that the workpiece size is out of tolerance, the flatness is abnormal, or a sensor fails, it triggers the flashing of the corresponding color light and the buzzer alarm.

[0030] In this embodiment, the workpiece to be measured is placed on the placement table 3, and the position of the workpiece is fixed by the L-shaped fixing block 33 and the anti-slip pad 32 to ensure its stability during the measurement. The horizontal sensor 211 detects the inclination of the horizontal table 2 and automatically levels it through the leveling telescopic rod 212 until the horizontal sensor 211 indicates that the horizontal table 2 reaches the horizontal state; The scanning camera 71 scans the workpiece and the first scale stripe 31 to obtain the three-dimensional contour data of the workpiece. The controller 61 receives the three-dimensional contour data, forms a preliminary measurement trajectory based on the data, and performs path verification through the path planning component. The calibration probe 72 moves along the measurement trajectory, contacts the surface of the workpiece, the pressure sensor detects the contact pressure and feeds it back to the controller 61. The controller 61 records the three-dimensional coordinates of the contact point and compares them with the theoretical coordinates in the three-dimensional contour data generated by the scanning camera 71. If the deviation exceeds the preset threshold, the controller 61 automatically corrects it and generates a new measurement trajectory; The controller 61 controls the displacement component to drive the measurement components (the size measurement sensor group and the flatness measurement sensor group) to move in the three-dimensional coordinate system. The size measurement sensor obtains the height size data of the workpiece by comparing the second scale stripe of the auxiliary ruler through induction with the workpiece image, and the laser probe 43 scans the surface of the workpiece to obtain the surface flatness data of the workpiece; The controller 61 processes the data and real-time displays the size data, flatness data, measurement trajectory and three-dimensional contour model of the workpiece through the display panel.

[0031] In this embodiment, if the controller 61 detects that the workpiece size is out of tolerance, the flatness is abnormal or the sensor fails, the sound and light alarm will issue an alarm through the flashing of the red LED light and the buzzer. Specifically, the alarm rules can be adjusted by the staff themselves. For example, if the workpiece size is out of tolerance, the red LED light will flash; if the flatness is abnormal, the buzzer will sound an alarm; if the sensor fails, the red LED light will flash and the buzzer will sound an alarm. Embodiment 2

[0032] This embodiment introduces an operation method of a workpiece measuring device in Embodiment 1. The operation method includes the following steps: S1. Equipment initialization: The controller 61 starts the self-check program. The leveling mechanism detects the inclination of the horizontal table 2 through the horizontal sensor 211, and controls the leveling telescopic rod 212 to expand and contract so that the leveling feet 213 form a horizontal support until the horizontal sensor 211 feeds back that the horizontal error ≤ 0.02°; S2. Workpiece positioning: The workpiece is placed on the anti-slip pad 32 and abuts against the L-shaped fixing block 33. The controller 61 controls the scanning camera 71 to move along the X-axis to scan the workpiece and the first scale stripe 31, and generates a three-dimensional contour model containing the reference edges of the length, width and height through the recognition algorithm; S3. Path Planning: The controller 61 generates a preliminary measurement trajectory based on the three-dimensional contour model and generates multiple random contact points on the length and width reference edges; S4. Measurement Verification: The verification probe 72 moves along the preliminary measurement path and probes the random contact points. When the verification probe 72 passes through the contact point, under normal circumstances, the verification probe 72 will not deform when contacting the workpiece. When the preliminary measurement path does not match the actual workpiece, the verification probe 72 will deform and the pressure sensor at the end will have a relatively large pressure change. At this time, the controller 61 will record the coordinates of the current contact point and correct the coordinate offset to form the final measurement path; S5. Start Measurement: The displacement component drives the dimensional measurement sensor 41 group to move to the measurement point according to the final measurement path, and the dimensional measurement sensor 41 scans the second scale stripe of the auxiliary scale 42 to obtain the actual height data of the workpiece; the laser probe 43 obtains the surface undulation data of the workpiece during the measurement process; S6. Data Analysis: The controller 61 combines the dimensional measurement data and the flatness data and maps them to the three-dimensional contour model to form the final three-dimensional model; S7. Abnormality Handling: When it is detected that the dimensional tolerance exceeds 0.1 mm or the flatness value is > 0.5 mm, the acoustic-optic alarm triggers a red warning; After the measurement is completed, the displacement component returns to the initial position and waits for the next measurement instruction.

[0033] In the above specific embodiments, the technical problems solved, technical solutions and beneficial effects of the present invention are further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A workpiece measuring device, characterized in that: include: Base (1); A horizontal platform (2), wherein the horizontal platform (2) is installed on the base (1); A placement table (3), the placement table (3) being mounted on the horizontal platform (2), the workpiece to be measured being suitable for being placed on the placement table (3), and the placement table (3) being provided with first scale stripes (31); A measuring component, the measuring component comprising a size measuring sensor group and a flatness measuring sensor group; A displacement component, the displacement component being mounted on the horizontal platform (2), and the size measurement sensor group (41) and the flatness measurement sensor group being both mounted on the displacement component; The dimension measurement sensor group comprises a dimension measurement sensor (41) and an auxiliary ruler (42), the dimension measurement sensor (41) and the auxiliary ruler (42) being arranged opposite to each other, a side of the auxiliary ruler (42) facing the dimension measurement sensor (41) being provided with a second scale stripe, and the dimension measurement sensor (41) being adapted to sense the second scale stripe to obtain height dimension data of the workpiece; The flatness measurement sensor group comprises a laser probe (43), wherein the laser probe (43) is suitable for scanning the surface of a workpiece to obtain surface flatness data of the workpiece; A control component, the control component comprising a controller (61), the controller (61) being mounted on the horizontal platform (2), the controller (61) being in communication connection with the displacement component and the measuring component, the controller (61) being adapted to control the displacement component to drive the measuring component to move in a three-dimensional coordinate system, the dimension measurement sensor (41) being adapted to transmit the acquired dimension data to the controller (61), and the laser probe (43) being adapted to transmit the acquired flatness data to the controller (61).

2. A workpiece measuring device according to claim 1, characterized in that: A first working chamber (21) is provided in the horizontal platform (2), and a leveling mechanism is provided in the first working chamber (21), wherein the leveling mechanism comprises a leveling sensor (211) and a leveling telescopic rod (212), wherein the leveling sensor (211) and the leveling telescopic rod (212) are both installed in the first working chamber (21), and a movable end of the leveling telescopic rod (212) is movable outside the first working chamber (21), and a leveling foot (213) is provided at the movable end of the leveling telescopic rod (212), and the leveling sensor (211) and the leveling telescopic rod (212) are both communicatively connected to the controller (61).

3. A workpiece measuring device according to claim 1, characterized in that: The placement table (3) is provided with an anti-skid pad (32), and at least one L-shaped fixing block (33) is provided on the anti-skid pad (32).

4. A workpiece measuring device according to claim 1, characterized in that: The displacement component comprises a displacement base (51), an X-axis movement component, a Y-axis movement component and a Z-axis movement component; The displacement base (51) is installed on the horizontal platform (2), and the displacement base (51) is provided with a sliding groove (511) and a mounting cavity (512); The X-axis moving assembly comprises an X-axis moving seat (521) and an X-axis displacement driving member (522); the X-axis moving seat (521) is slidably mounted in the sliding groove (511) via at least one first guide rail slider pair; Wherein, the first guide rail slider pair comprises: A first guide rail (523) installed on both sides of the sliding groove (511); A first sliding block (524) installed on both sides of the X-axis moving seat (521); The X-axis displacement driving member (522) is installed in the installation cavity (512), and the movable end of the X-axis displacement driving member (522) is connected to the X-axis moving seat (521).

5. A workpiece measuring device according to claim 4, characterized in that: The Y-axis moving assembly comprises a Y-axis moving seat (531) and a Y-axis displacement driving member (532); The Y-axis moving seat (531) is slidably mounted on the X-axis moving seat (521) via at least one second guide rail slider pair; Wherein, the second guide rail slider pair comprises: A second guide rail (533) mounted on the X-axis moving seat (521); A second sliding block (534) mounted on the bottom of the Y-axis moving seat (531); The Y-axis displacement driving member (532) is mounted on the X-axis moving seat (521), and the movable end of the Y-axis displacement driving member (532) is connected to the Y-axis moving seat (531).

6. A workpiece measuring device according to claim 5, characterized in that: The Z-axis moving assembly comprises a Z-axis moving seat (541), a Z-axis displacement driving member (542) and a connecting seat (535); The connecting seat (535) is installed on the top of the Y-axis moving seat (531); The Z-axis moving seat (541) is slidably mounted on the connecting seat (535) via at least one third guide rail (543) slider pair; Wherein, the third guide rail (543) slider pair comprises: A third guide rail (543) mounted on the connecting seat (535); A third sliding block (544) mounted on the Z-axis moving seat (541); The Z-axis displacement driving member (542) is mounted on the connecting seat (535), and the movable end of the Z-axis displacement driving member (542) is connected to the Z-axis moving seat (541); A mounting seat (545) is provided at the top end of the Z-axis moving seat (541), and the dimension measurement sensor (41), the auxiliary ruler (42) and the laser probe (43) are all mounted on the mounting seat (545).

7. A workpiece measuring device according to claim 6, characterized in that: The invention also includes a path planning component, wherein the path planning component includes a scanning camera (71), wherein the scanning camera (71) is communicatively connected to the controller (61), and wherein the scanning camera (71) is mounted on the X-axis movable seat (521) via a connecting bracket, and wherein the scanning camera (71) is suitable for scanning the workpiece and the first scale stripe (31) on the placement table (3) to obtain three-dimensional contour data of the workpiece and transmit the three-dimensional contour data to the controller (61), and wherein the controller (61) forms a measurement trajectory according to the three-dimensional contour data.

8. A workpiece measuring device according to claim 7, characterized in that: The path planning component further comprises a calibration probe (72), wherein the calibration probe (72) is mounted on the mounting seat (545), and a pressure sensor is provided at the end of the calibration probe (72), wherein the pressure sensor is suitable for detecting contact pressure with the surface of the workpiece; When the controller (61) generates a measurement trajectory, the calibration probe (72) moves along the measurement trajectory and contacts a contact point on the surface of the workpiece, and the pressure sensor feeds back contact pressure data to the controller (61) in real time, while the controller (61) records the three-dimensional coordinates of the contact point; The controller (61) compares the actual coordinates obtained by the calibration probe (72) with the theoretical coordinates in the three-dimensional profile data generated by the scanning camera (71), and automatically corrects and generates a new measurement trajectory if the deviation exceeds a preset threshold; The moving path of the verification probe (72) is offset by a certain distance from the measuring path of the dimension measurement sensor (41) group and the laser probe (43).

9. A workpiece measuring device according to claim 1, characterized in that: The control component further comprises a control housing (62), a display panel and an audible and visual alarm, wherein the control housing (62) is mounted on the horizontal platform (2), and the controller (61), the display panel and the audible and visual alarm are all mounted on the control housing (62); The display panel is a touch screen, the display panel is electrically connected to the controller (61), and the display panel is suitable for displaying the dimension data, flatness data, measurement trajectory and three-dimensional contour model of the workpiece in real time; The sound and light alarm comprises a red LED light and a buzzer. When the controller (61) detects that the workpiece size is out of tolerance, the flatness is abnormal, or the sensor fails, the corresponding color of the light flashes and the buzzer alarm sounds.

10. An operating method of a workpiece measuring device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, equipment initialization: the controller (61) starts a self-checking program, the leveling mechanism detects the inclination of the horizontal platform (2) through the horizontal sensor (211), controls the leveling telescopic rod (212) to extend and retract so that the leveling support foot (213) forms a horizontal support, until the horizontal sensor (211) feeds back a horizontal error of ≤0.02°; S2, workpiece positioning: placing the workpiece on the anti-slip pad (32) and abutting against the L-shaped fixing block (33), the controller (61) controlling the scanning camera (71) to move along the X-axis to scan the workpiece and the first scale stripe (31), and generating a three-dimensional contour model through a recognition algorithm; S3, path planning: the controller (61) generates a preliminary measurement trajectory according to the three-dimensional contour model and generates a plurality of random contact points on the length and width reference edges; S4, measurement verification: the verification probe (72) moves along the preliminary measurement path and detects random contact points. When the verification probe (72) passes through the contact points, under normal circumstances, the verification probe (72) will not be deformed when in contact with the workpiece. When the preliminary measurement path does not match the actual workpiece, the verification probe (72) will be deformed and the pressure sensor at the end will have a large pressure change. At this time, the controller (61) will record the coordinates of the current contact point and correct the coordinate offset to form a final measurement path; S5, start measuring: the displacement component drives the dimension measurement sensor (41) group to move to the measurement point according to the final measurement path, the dimension measurement sensor (41) scans the second scale stripe of the auxiliary ruler (42) to obtain the actual height data of the workpiece; the laser probe (43) obtains the surface relief data of the workpiece during the measurement process; S6, data analysis: the controller (61) maps the dimension measurement data and the flatness data to the three-dimensional contour model to form a final three-dimensional model; S7. Abnormal processing: When the dimension deviation is ≥0.1mm or the flatness value is >0.5mm, the sound and light alarm triggers a red warning; After completing the measurement, the displacement component returns to the initial position and waits for the next measurement instruction.

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