Metal surface flatness detection mechanism and detection method

Abstract

The invention discloses a metal surface flatness detection mechanism and method, and the mechanism comprises a workbench, a layer plate disposed below the workbench, a pedestal disposed below the layer plate, a turnover mechanism disposed at one side of the layer plate, and a rotating mechanism disposed below the workbench, and the turnover mechanism is used for driving a metal product to turn over. The motor is used for driving the workbench to rotate; a hydraulic rod A drives a lifting frame to ascend, a turnover motor drives a metal product to turn over, the lifting frame and the turnover motor are matched with each other, and surface flatness detection is conducted on the upper face, the lower face, the left face and the right face of a metal block in sequence. A servo motor A is arranged and drives a workbench to rotate by 90 degrees under the transmission action of a gear A and a gear B, and the hydraulic rod A is matched with the turnover motor; the front and back surfaces of the metal block are subjected to surface flatness detection, so that the metal product surface flatness detection device can detect the flatness of six surfaces of the metal block, and the detection efficiency of the surface flatness of the metal product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal surface flatness detection, and particularly to a metal surface flatness detection mechanism and a detection method. Background Art

[0002] Metal surface flatness detection is a process of evaluating its geometric flatness by measuring the undulation deviation of the surface profile. Usually, contact methods (such as profilometers, micrometers) or non-contact methods (such as laser scanning, optical interferometers) are used, combined with parameters such as Ra (arithmetic mean roughness) and Rz (maximum peak-to-valley height) for quantitative analysis to ensure that the surface quality meets the processing or assembly requirements.

[0003] The metal surface flatness detection methods mainly include the following several types:

[0004] 1. Contact measurement:

[0005] Profilometer / roughness meter: By contacting the surface with a probe to measure the micro-undulation and calculate parameters such as Ra and Rz.

[0006] Micrometer / dial indicator: Manually measure the local flatness deviation, suitable for large-sized workpieces.

[0007] 2. Non-contact measurement:

[0008] Laser scanning / laser confocal microscope: Using a laser beam to scan the surface to generate 3D topography data with high precision.

[0009] Optical interferometer (white light / laser interferometer): Analyze the surface flatness through light wave interference, suitable for ultra-precision detection.

[0010] Structured light / 3D vision detection: Project grating or coded light, combined with camera imaging to calculate the surface topography.

[0011] 3. Special equipment for flatness:

[0012] Flat plate + feeler gauge method: A traditional method, placing the workpiece to be measured on a standard flat plate and using a feeler gauge to detect the gap.

[0013] Coordinate measuring machine (CMM): Through a probe or laser scanning for multi-point measurement to calculate the overall flatness error.

[0014] 4. Industrial automation detection:

[0015] On-line laser / vision detection system: Integrated into the production line to monitor the surface flatness in real time, suitable for batch production.

[0016] In the prior art, the Chinese invention patent with the application number 202311173206.X discloses a device for detecting the surface flatness of metal products. In the present invention, the motor of the detection mechanism drives the floating rod on the surface frame to rotate. During the rotation, the floating rod can detect the flatness of the metal product on the same radius. The position with the largest floating flatness on the same radius will drive the floating rod to move upward to lift the floating plate, so that the digital display micrometer can detect the maximum flatness value of the metal product on the same radius. By comparing it with the preset threshold, it can be judged whether the flatness of the metal product meets the standard, thereby reducing the use of the digital display micrometer and saving costs.

[0017] Problems compared with the prior art: Some existing devices for detecting the surface flatness of metal products cannot automatically flip during the detection of metal blocks, and thus cannot detect the flatness of the six surfaces of the metal blocks, resulting in the need to improve the detection efficiency of the surface flatness of metal products.

[0018] Therefore, there is an urgent need for a detection mechanism and detection method for the surface flatness of metals. Summary of the Invention

[0019] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a detection mechanism and detection method for the surface flatness of metals.

[0020] The present invention solves its technical problems through the following technical solutions: It includes a workbench, a layer board installed below the workbench, a base installed below the layer board, and a flipping mechanism arranged on one side of the layer board for driving the metal product to flip. It also includes a rotating mechanism arranged below the workbench for driving the workbench to rotate itself. The flipping mechanism includes a hydraulic rod A, which is fixed to the lower part of the layer board by bolts. The extending end of the hydraulic rod A is fixedly connected with a lifting frame. Both ends of the lifting frame are rotatably connected with lateral electric push rods. The extending end of the lateral electric push rod is fixedly connected with a top plate. One side of the lifting frame is fixedly connected with a flipping motor. The rotating end of the flipping motor is fixedly connected with a driving gear. One end of the lateral electric push rod is fixedly connected with a driven gear. The driving gear meshes with the driven gear. The rotating mechanism includes a cylinder, which is fixed to the lower part of the workbench by bolts. A servo motor A is fixedly connected to the lower part of the layer board. The rotating end of the servo motor A is fixedly connected with a gear A. A gear B is fixedly connected to the outer side of the cylinder. The gear A meshes with the gear B.

[0021] As a further solution of the present invention: a clamping mechanism is arranged inside the workbench for clamping and fixing metal products. The clamping mechanism includes a chute, which is cut at the middle position of the workbench. A bidirectional lead screw is rotatably connected at the middle position of the chute. Both ends of the bidirectional lead screw are drivingly connected with sliders, and the sliders are slidably connected with the chute. A clamping plate is fixedly connected above the sliders, and a rubber pad is arranged on the inner wall of the clamping plate.

[0022] As a further solution of the present invention: a driving mechanism is arranged above the base for driving the process of detecting the flatness of metal products. The driving mechanism includes a hydraulic rod B, which is fixed above the base by bolts. The extending end of the hydraulic rod B is fixedly connected with a cross beam. One end of the cross beam is fixedly connected with a servo motor B, and the rotating end of the servo motor B is fixedly connected with a lead screw. A driving block is drivingly connected to the outside of the lead screw, and a frame is fixedly connected below the driving block. One end of the frame is fixedly connected with a driving electric push rod.

[0023] As a further solution of the present invention: the extending end of the driving electric push rod is fixedly connected with a detecting mechanism for detecting the flatness of the metal surface. The detecting mechanism includes a housing, which is fixed to the extending end of the driving electric push rod by bolts. A detecting rod is slidably connected to the bottom of the housing. A ball is rotatably connected to one end of the detecting rod. A spiral spring is fixedly connected to one end of the detecting rod. A pressure sensor is fixedly connected to the top of the housing.

[0024] As a further solution of the present invention: a metal block is installed at the middle position of the workbench, and a guiding rod is fixedly connected inside the frame.

[0025] As a further solution of the present invention: a turntable is fixedly connected to one end of the bidirectional lead screw.

[0026] As a further solution of the present invention: an inclination sensor is fixedly connected to the middle position of the base.

[0027] As a further solution of the present invention: a controller is fixedly connected to the outer wall of the hydraulic rod B, and the controller is electrically connected to the lateral electric push rod, the flipping motor, the inclination sensor, the servo motor A, the servo motor B, the driving electric push rod, and the pressure sensor.

[0028] As a further solution of the present invention: a jacking rod is arranged below the workbench, a pulley is rotatably connected to one end of the jacking rod, and a groove is arranged on the top of the laminate.

[0029] A method for detecting the flatness of a metal surface includes:

[0030] S1: Place the metal block above the workbench, start the hydraulic rod A. The hydraulic rod A drives the lifting frame to rise to the middle position of the metal block. Drive the bidirectional lead screw to rotate through the turntable, drive the clamping plates to approach each other, and fix the metal block.

[0031] S2: The servo motor B drives the driving block to move through the lead screw, adjusts the detected horizontal position. Start the driving electric push rod, and the driving electric push rod drives the housing to move longitudinally, so as to adjust the longitudinal position of the metal surface detection.

[0032] S3: The hydraulic rod B drives the cross beam to descend. The pressure sensor sequentially detects the pressure of the detection rods at different positions. When the change of the pressure value is detected, it means that the surface flatness of the metal product is poor. When the unchanged or slightly fluctuating pressure value is detected, it means that the surface flatness of the metal product is good.

[0033] S4: The clamping plates reset. Start the lateral electric push rod. The lateral electric push rod drives the top plate to clamp the metal block, and then drives the metal block to rise. Next, the flipping motor drives the lateral electric push rod to rotate 90° each time, and sequentially detects the flatness of the four surfaces of the metal block.

[0034] S5: The device returns to the initial position. The servo motor A drives the workbench to rotate 90° through the cylinder.

[0035] S6: The hydraulic rod A drives the lifting frame to rise to the middle position of the metal block. Drive the bidirectional lead screw to rotate through the turntable, drive the clamping plates to approach each other, and fix the metal block. Furthermore, detect the flatness of the remaining two surfaces of the metal block.

[0036] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

[0037] 1. Drive the lifting frame to rise through the hydraulic rod A, drive the metal product to flip through the flipping motor. The two cooperate with each other to sequentially detect the surface flatness of the upper, lower, left and right four surfaces of the metal block. There is a servo motor A. The servo motor A drives the workbench to rotate 90° under the transmission of the gear A and the gear B. The hydraulic rod A and the flipping motor cooperate to detect the surface flatness of the front and back surfaces of the metal block, so that the metal product surface flatness detection device can detect the flatness of the six surfaces of the metal block, improving the detection efficiency of the metal product surface flatness.

[0038] 2. Drive the cross beam to rise and fall through the hydraulic rod B, the servo motor B drives the frame to move horizontally through the lead screw, and drives the housing to move longitudinally through the driving electric push rod, so that the metal surface flatness detection mechanism can meet the surface flatness detection of metal products of various sizes and shapes.

[0039] 3. Drive the detection rod to move downward through the hydraulic rod B, so that the ball is closely attached to the surface of the metal product. The servo motor B and the driving electric push rod cooperate to drive the detection rod to move. The pressure sensor detects the pressure of the detection rod. When the change in the pressure value is detected, it means that the surface flatness of the metal product is poor. When the pressure value remains unchanged or fluctuates slightly, it means that the surface flatness of the metal product is good, improving the detection accuracy of the metal surface flatness detection mechanism. Brief Description of the Drawings

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0041] Figure 1 Shows the front view structural schematic diagram provided by the embodiment of the present invention;

[0042] Figure 2 Shows the rear view structural schematic diagram provided by the embodiment of the present invention;

[0043] Figure 3 Shows the side view sectional structural schematic diagram provided by the embodiment of the present invention;

[0044] Figure 4 Shows the Figure 3 local enlarged structural schematic diagram at A provided by the embodiment of the present invention;

[0045] Figure 5 Shows the Figure 3 local enlarged structural schematic diagram at B provided by the embodiment of the present invention;

[0046] Figure 6 Shows the front view sectional structural schematic diagram provided by the embodiment of the present invention;

[0047] Figure 7 Shows the Figure 6 local enlarged structural schematic diagram at C provided by the embodiment of the present invention;

[0048] Figure 8 Shows the Figure 6 local enlarged structural schematic diagram at D provided by the embodiment of the present invention.

[0049] Legend Explanation:

[0050] 100, workbench; 200, laminate; 300, base; 400, metal block; 500, turntable;

[0051] 101. Hydraulic rod A; 102. Lifting frame; 103. Lateral electric push rod; 104. Top plate; 105. Tipping motor; 106. Driving gear; 107. Driven gear; 110. Inclination sensor;

[0052] 201. Cylinder; 202. Servo motor A; 203. Gear A; 204. Gear B; 210. Controller;

[0053] 301. Slide groove; 302. Bi-directional lead screw; 303. Slide block; 304. Clamping plate; 305. Rubber pad; 310. Thrust rod; 320. Pulley; 330. Groove;

[0054] 401. Hydraulic rod B; 402. Cross beam; 403. Servo motor B; 404. Lead screw; 405. Driving block; 406. Frame; 407. Driving electric push rod; 410. Guide rod;

[0055] 501. Outer shell; 502. Detection rod; 503. Ball; 504. Helical spring; 505. Pressure sensor. Detailed implementation mode

[0056] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature and not restrictive.

[0057] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0058] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0059] Embodiment 1:

[0060] This design is mainly aimed at

[0061] Such as Figures 1-8As shown, a metal surface flatness detection mechanism and detection method include a workbench 100, a layer plate 200 installed under the workbench 100, a base 300 installed under the layer plate 200, and a flipping mechanism arranged on one side of the layer plate 200, which is used to drive the metal product to flip, and also includes a rotating mechanism arranged under the workbench 100, which is used to drive the workbench 100 to rotate. The flipping mechanism includes a hydraulic rod A101, which is fixed to the bottom of the layer plate 200 by bolts, and the extended end of the hydraulic rod A101 is fixed with a lifting frame 102 by bolts, and the two ends of the lifting frame 102 are rotatably connected with lateral electric push rods 103, and the extended end of the lateral electric push rod 103 is fixed with a top plate 101 by bolts. 4. The lateral electric push rod 103 drives the top plate 104 to move and clamp the metal product. A flip motor 105 is fixed to one side of the lifting frame 102 by bolts. A driving gear 106 is fixed to the rotating end of the flip motor 105 by bolts. A driven gear 107 is fixed to one end of the lateral electric push rod 103 by bolts. The driving gear 106 is meshed with the driven gear 107. The flip motor 105 drives the lateral electric push rod 103 to rotate through the meshing of the driving gear 106 and the driven gear 107, thereby flipping the metal product. The rotating mechanism includes a cylinder 201, which is fixed to the bottom of the workbench 100 by bolts. A servo motor A202 is fixed to the bottom of the layer plate 200 by bolts. The rotating end of the servo motor A202 is fixed with a gear A203 by bolts, and the servo motor A202 drives the gear A203 to rotate. The outer side of the cylinder 201 is fixed with a gear B204 by bolts, and the gear A203 is meshed with the gear B204. The middle position of the base 300 is fixed with an inclination sensor 110 by bolts, and the inclination sensor 110 measures the inclination of the base 300. The inside of the workbench 100 is provided with a clamping mechanism for clamping and fixing the metal product. The clamping mechanism includes a slide groove 301, and the slide groove 301 is cut at the middle position of the workbench 100. The middle position of the slide groove 301 is rotatably connected with a bidirectional screw rod 302, and one end of the bidirectional screw rod 302 is fixed by bolts. A turntable 500 is provided, through which the bidirectional screw rod 302 is driven to rotate, and sliders 303 are transmission-connected at both ends of the bidirectional screw rod 302, and the bidirectional screw rod 302 drives the sliders 303 to move closer to or away from each other to clamp the metal product, and the slider 303 is slidably connected to the slide groove 301, and a splint 304 is fixed above the slider 303 by bolts, and a rubber pad 305 is pasted on the inner wall of the splint 304, and the rubber pad 305 prevents the surface of the metal product from being scratched, and a push rod 310 is welded at the bottom of the workbench 100, and one end of the push rod 310 is rotatably connected to a pulley 320, and a groove 330 is cut on the top of the layer plate 200, and the pulley 320 rotates along the groove 330 to provide rotational support for the workbench 100.

[0062] In this embodiment, the hydraulic rod A101 drives the lifting frame 102 to rise, and the flipping motor 105 drives the metal product to flip. The two cooperate with each other to sequentially detect the surface flatness of the upper, lower, left, and right four sides of the metal block 400. A servo motor A202 is provided. Under the driving action of the gear A203 and the gear B204, the servo motor A202 drives the workbench 100 to rotate 90°. The hydraulic rod A101 and the flipping motor 105 cooperate to detect the surface flatness of the front and back sides of the metal block 400, so that the surface flatness detection device of the metal product can detect the flatness of the six surfaces of the metal block 400, improving the detection efficiency of the surface flatness of the metal product.

[0063] When this embodiment is in use, first place the metal block 400 above the workbench 100, start the hydraulic rod A101, and the hydraulic rod A101 drives the lifting frame 102 to rise to the middle position of the metal block 400. The bidirectional lead screw 302 is driven to rotate through the turntable 500, driving the clamping plates 304 to approach each other to fix the metal block 400 and detect the flatness of the upper surface of the metal block 400. Subsequently, the clamping plates 304 are reset, the lateral electric push rod 103 is started, the lateral electric push rod 103 drives the top plate 104 to clamp the metal block 400, and then drives the metal block 400 to rise. Next, the flipping motor 105 drives the lateral electric push rod 103 to rotate 90° each time to sequentially detect the flatness of the four surfaces of the metal block 400. After the detection is completed, the device returns to the initial position, and the servo motor A202 drives the workbench 100 to rotate 90° through the cylinder 201 to detect the flatness of the remaining two surfaces of the metal block 400.

[0064] Embodiment 2:

[0065] As Figures 1-8As shown in the figure, a metal surface flatness detection mechanism and a detection method are provided. Above the base 300, a driving mechanism is arranged for driving the flatness detection process of metal products. The driving mechanism includes a hydraulic rod B401, which is fixed above the base 300 by bolts. The extending end of the hydraulic rod B401 is fixed with a cross beam 402 by bolts. One end of the cross beam 402 is fixed with a servo motor B403 by bolts. The rotating end of the servo motor B403 is fixed with a lead screw 404 by bolts. The servo motor B403 drives the lead screw 404 to rotate. The outer side of the lead screw 404 is drivingly connected with a driving block 405. The lower part of the driving block 405 is fixed with a frame 406 by bolts. The lead screw 404 drives the frame 406 to move horizontally through the driving block 405. A metal block 400 is installed at the middle position of the workbench 100. A guide rod 410 is fixed inside the frame 406 by bolts. One end of the frame 406 is fixed with a driving electric push rod 407 by bolts. The extending end of the driving electric push rod 407 is fixed with a detection mechanism for detecting the flatness of the metal surface. The detection mechanism includes a housing 501. The guide rod 410 limits the moving track of the housing 501. The housing 501 is fixed to the extending end of the driving electric push rod 407 by bolts. A detection rod 502 is slidably connected to the bottom of the housing 501. One end of the detection rod 502 is rotatably connected with a ball 503. The ball 503 contacts the metal block 400. One end of the detection rod 502 is fixed with a spiral spring 504 by bolts. The spiral spring 504 resets the detection rod 502. A pressure sensor 505 is fixed to the top of the housing 501 by bolts. The pressure sensor 505 detects the pressure of the detection rod 502. A controller 210 is fixed to the outer wall of the hydraulic rod B401 by bolts. The controller 210 is electrically connected to the lateral electric push rod 103, the flipping motor 105, the inclination sensor 110, the servo motor A202, the servo motor B403, the driving electric push rod 407, and the pressure sensor 505.

[0066] In this embodiment, the hydraulic rod B401 drives the cross beam 402 to lift and lower. The servo motor B403 drives the frame 406 to move horizontally through the lead screw 404. The driving electric push rod 407 drives the housing 501 to move longitudinally, so that the metal surface flatness detection mechanism can meet the flatness detection of metal products with various sizes and shapes. The hydraulic rod B401 drives the detection rod 502 to move downward, so that the ball 503 closely adheres to the surface of the metal product. The servo motor B403 and the driving electric push rod 407 cooperate to drive the detection rod 502 to move. The pressure sensor 505 detects the pressure of the detection rod 502. When the detected pressure value changes, the flatness of the metal product surface is poor. When the detected pressure value remains unchanged or fluctuates slightly, the surface flatness of the metal product is good, improving the detection accuracy of the metal surface flatness detection mechanism.

[0067] When this embodiment is in use, start the servo motor B403. The servo motor B403 drives the driving block 405 to move through the lead screw 404 to adjust the detected horizontal position. Start the driving electric push rod 407. The driving electric push rod 407 drives the housing 501 to move longitudinally, so as to adjust the longitudinal position of the metal surface detection. Next, the hydraulic rod B401 drives the cross beam 402 to descend, and the pressure sensor 505 sequentially detects the pressure of the detection rods 502 at different positions. When the detected pressure value changes, the flatness of the metal product surface is poor. When the detected pressure value remains unchanged or fluctuates slightly, the flatness of the metal product surface is good.

[0068] A metal surface flatness detection mechanism and detection method, comprising:

[0069] S1: Place the metal block 400 above the workbench 100. Start the hydraulic rod A101. The hydraulic rod A101 drives the lifting frame 102 to rise to the middle position of the metal block 400. Drive the bidirectional lead screw 302 to rotate through the turntable 500, drive the clamping plates 304 to approach each other, and fix the metal block 400.

[0070] S2: The servo motor B403 drives the driving block 405 to move through the lead screw 404 to adjust the detected horizontal position. Start the driving electric push rod 407. The driving electric push rod 407 drives the housing 501 to move longitudinally, so as to adjust the longitudinal position of the metal surface detection.

[0071] S3: The hydraulic rod B401 drives the cross beam 402 to descend, and the pressure sensor 505 sequentially detects the pressure of the detection rods 502 at different positions. When the detected pressure value changes, the flatness of the metal product surface is poor. When the detected pressure value remains unchanged or fluctuates slightly, the flatness of the metal product surface is good.

[0072] S4: The clamping plates 304 reset. Start the lateral electric push rod 103. The lateral electric push rod 103 drives the top plate 104 to clamp the metal block 400, and then drives the metal block 400 to rise. Next, the flipping motor 105 drives the lateral electric push rod 103 to rotate 90° each time to sequentially detect the flatness of the four surfaces of the metal block 400.

[0073] S5: The device returns to the initial position. The servo motor A202 drives the workbench 100 to rotate 90° through the cylinder 201.

[0074] S6: The hydraulic rod A101 drives the lifting frame 102 to rise to the middle position of the metal block 400. Drive the bidirectional lead screw 302 to rotate through the turntable 500, drive the clamping plates 304 to approach each other, and fix the metal block 400, and then detect the flatness of the remaining two surfaces of the metal block 400.

[0075] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered by the protection scope of the present invention.

Claims

1. A metal surface flatness detection mechanism, characterized in that It includes a workbench (100), a shelf (200) installed below the workbench (100), a base (300) installed below the shelf (200), and a flipping mechanism arranged on one side of the shelf (200) for driving the metal product to flip. It further includes a rotating mechanism arranged below the workbench (100) for driving the workbench (100) to rotate self. The flipping mechanism includes a hydraulic rod A (101), the hydraulic rod A (101) is fixed below the shelf (200) by bolts, the extending end of the hydraulic rod A (101) is fixedly connected with a lifting frame (102), both ends of the lifting frame (102) are rotatably connected with lateral electric push rods (103), the extending end of the lateral electric push rod (103) is fixedly connected with a top plate (104), one side of the lifting frame (102) is fixedly connected with a flipping motor (105), the rotating end of the flipping motor (105) is fixedly connected with a driving gear (106), one end of the lateral electric push rod (103) is fixedly connected with a driven gear (107), and the driving gear (106) meshes with the driven gear (107). The rotating mechanism includes a cylinder (201), the cylinder (201) is fixed below the workbench (100) by bolts, a servo motor A (202) is fixedly connected below the shelf (200), the rotating end of the servo motor A (202) is fixedly connected with a gear A (203), a gear B (204) is fixedly connected to the outer side of the cylinder (201), and the gear A (203) meshes with the gear B (204).

2. The flatness detection mechanism for a metal surface according to claim 1, wherein A clamping mechanism is arranged inside the workbench (100) for clamping and fixing the metal product. The clamping mechanism includes a chute (301), the chute (301) is cut at the middle position of the workbench (100), a bidirectional lead screw (302) is rotatably connected at the middle position of the chute (301), both ends of the bidirectional lead screw (302) are drivingly connected with sliders (303), the sliders (303) are slidably connected with the chute (301), a clamping plate (304) is fixedly connected above the sliders (303), and a rubber pad (305) is arranged on the inner wall of the clamping plate (304).

3. A metal surface flatness detection mechanism according to claim 2, characterized in that, A driving mechanism is arranged above the base (300) for driving the process of flatness detection of the metal product. The driving mechanism includes a hydraulic rod B (401), the hydraulic rod B (401) is fixed above the base (300) by bolts, the extending end of the hydraulic rod B (401) is fixedly connected with a cross beam (402), one end of the cross beam (402) is fixedly connected with a servo motor B (403), the rotating end of the servo motor B (403) is fixedly connected with a lead screw (404), a driving block (405) is drivingly connected to the outer side of the lead screw (404), a frame (406) is fixedly connected below the driving block (405), and a driving electric push rod (407) is fixedly connected to one end of the frame (406).

4. A metal surface flatness detection mechanism according to claim 3, characterized in that, The extended end of the driving electric push rod (407) is fixedly connected with a detection mechanism for detecting the flatness of the metal surface. The detection mechanism includes a housing (501). The housing (501) is fixed to the extended end of the driving electric push rod (407) by bolts. A detection rod (502) is slidably connected to the bottom of the housing (501). One end of the detection rod (502) is rotatably connected with a ball (503). One end of the detection rod (502) is fixedly connected with a helical spring (504). A pressure sensor (505) is fixedly connected to the top of the housing (501).

5. A metal surface flatness detection mechanism according to claim 4, characterized in that, A metal block (400) is installed at the middle position of the workbench (100). A guide rod (410) is fixedly connected inside the frame (406).

6. The flatness detection mechanism for a metal surface according to claim 5, characterized in that, One end of the bidirectional lead screw (302) is fixedly connected with a turntable (500).

7. A metal surface flatness detection mechanism according to claim 6, characterized in that, An inclination sensor (110) is fixedly connected to the middle position of the base (300).

8. A metal surface flatness detection mechanism according to claim 7, characterized in that, A controller (210) is fixedly connected to the outer wall of the hydraulic rod B (401). The controller (210) is electrically connected to the lateral electric push rod (103), the flipping motor (105), the inclination sensor (110), the servo motor A (202), the servo motor B (403), the driving electric push rod (407), and the pressure sensor (505).

9. The flatness detection mechanism for a metal surface according to claim 8, characterized in that, A jacking rod (310) is arranged below the workbench (100). One end of the jacking rod (310) is rotatably connected with a pulley (320). A groove (330) is arranged on the top of the laminate (200).

10. A method for detecting the flatness of a metal surface, which is applied to a metal surface flatness detection mechanism as described in claim 9, and is characterized in that, Including: S1: Place the metal block (400) above the workbench (100), start the hydraulic rod A (101). The hydraulic rod A (101) drives the lifting frame (102) to rise to the middle position of the metal block (400). Drive the bidirectional lead screw (302) to rotate through the turntable (500), drive the clamping plates (304) to approach each other, and fix the metal block (400). S2: The servo motor B (403) drives the driving block (405) to move through the lead screw (404) to adjust the horizontal position of the detection. Start the driving electric push rod (407). The driving electric push rod (407) drives the housing (501) to move longitudinally, so as to adjust the longitudinal position of the metal surface detection. S3: The hydraulic rod B (401) drives the cross beam (402) to descend. The pressure sensor (505) sequentially detects the pressure of the detection rods (502) at different positions. When the detected pressure value changes, the flatness of the metal product surface is poor. When the detected pressure value remains unchanged or fluctuates slightly, the surface flatness of the metal product is good. S4: The clamping plates (304) reset. Start the lateral electric push rod (103). The lateral electric push rod (103) drives the top plate (104) to clamp the metal block (400), and then drives the metal block (400) to rise. Next, the flipping motor (105) drives the lateral electric push rod (103) to rotate 90° each time, and sequentially detects the flatness of the four surfaces of the metal block (400). S5: The device returns to the initial position, and the servo motor A (202) drives the workbench (100) to rotate 90° through the cylinder (201); S6: The hydraulic rod A (101) drives the lifting frame (102) to rise to the middle position of the metal block (400), drives the bidirectional lead screw (302) to rotate through the turntable (500), drives the clamping plates (304) to approach each other, fixes the metal block (400), and then performs flatness detection on the remaining two sides of the metal block (400).

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