Double-stroke flatness fast detection device

Abstract

The utility model relates to a double-stroke flatness fast detection device which comprises a workbench, a first driving air cylinder, a fixed bottom plate, a first sliding rail, a first sliding block, a detection positioning mechanism, a first sliding bottom plate, a second driving air cylinder, a second sliding rail, a second sliding block and a second sliding bottom plate. The first sliding bottom plate is arranged above the fixed bottom plate and is in driving connection with the first driving air cylinder, and the first sliding bottom plate is in sliding fit connection with the fixed bottom plate through the first sliding rail and the first sliding block; the second driving air cylinder and the second sliding bottom plate are both arranged on the first sliding bottom plate, the detection positioning mechanism is arranged above the second sliding bottom plate and is in driving connection with the second driving air cylinder, and the second sliding bottom plate is in sliding fit connection with the first sliding bottom plate through the second sliding rail and the second sliding block. The device is reasonable in design, quick in response, good in economical efficiency and adaptability and convenient to automatically control.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical manufacturing, assembly and detection, and relates to a double-stroke flatness quick detection device. Background Art

[0002] With the development of intelligent manufacturing technology, in the fields of manufacturing, assembly and testing technology such as automobiles, ships, aerospace, etc., the specifications of parts are diverse. In the face of further processing and assembly needs of parts, they need to be quickly positioned and clamped. In order to improve production rhythm and work efficiency, sometimes some technical indicators need to be quickly tested and judged in some production lines so as to eliminate defective products at an early stage. Some existing positioning and detection mechanisms have relatively single functions and are often difficult to adapt to user-specific needs. The detection efficiency is low and it is difficult to adapt to the needs of various products. In order to meet the needs of automated mass production and the needs of various models of products, and to further improve adaptability and online detection efficiency, a fast detection device with good adaptability is needed to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a double-stroke flatness fast detection device, which solves the problem of fast online flatness detection of some existing workpieces in production lines, has fast response, is suitable for batch production, can adapt to a variety of workpieces, and meets the specific needs of users.

[0004] To achieve the above-mentioned purpose, an embodiment of the utility model provides a double-stroke flatness quick inspection device, including: a workbench, a first driving cylinder, a fixed base plate, a first slide rail, a first slider, a detection and positioning mechanism, a first sliding base plate, a second driving cylinder, a second slide rail, a second slider, and a second sliding base plate, wherein the first driving cylinder and the fixed base plate are both arranged on the workbench and mechanically connected thereto, the first sliding base plate is arranged above the fixed base plate and drivingly connected to the first driving cylinder for realizing the linear motion of the first sliding base plate, the first sliding base plate and the fixed base plate are slidingly matched and connected to each other through the first slide rail and the first slider for maintaining the smooth motion of the first sliding base plate; the second driving cylinder and the second sliding base plate are both arranged on the first sliding base plate and mechanically connected thereto Mechanical connection, the detection and positioning mechanism is arranged above the second sliding base plate and is driven and connected with the second driving cylinder through the second sliding base plate to realize the linear movement of the detection and positioning mechanism, the second sliding base plate and the first sliding base plate are slidably matched and connected through the second slide rail and the second slider to maintain the smooth movement of the second sliding base plate; the detection and positioning mechanism includes: a bracket, at least three first sensors, and a positioning shaft, the bracket is arranged on the second sliding base plate and is mechanically connected thereto, a number of the first sensors are evenly distributed around the positioning shaft, the first sensor and the positioning shaft are both arranged on the bracket and are driven by the first driving cylinder and / or the second driving cylinder to perform synchronous linear motion with the bracket to realize the positioning of the specified plane of the workpiece and rapid flatness detection.

[0005] Furthermore, it also includes: a first limit block and a second limit block, the first limit block is arranged at one end of the fixed base plate and is mechanically connected to the fixed base plate or the workbench to achieve position limitation of the first sliding base plate; the second limit block is arranged at one end of the first sliding base plate and is mechanically connected to the first sliding base plate to achieve position limitation of the second sliding base plate.

[0006] Furthermore, it also includes: a second sensor, which is arranged on the fixed base plate or the workbench to realize the state recognition of the workpiece.

[0007] Furthermore, the detection and positioning mechanism further includes: a protective cover, the protective cover is mechanically connected to the bracket, and the first sensor is placed in the protective cover to achieve safety protection for the first sensor.

[0008] Optionally, the detection and positioning mechanism further includes: an adjustment gasket, which is arranged between the bracket and the second sliding base plate to achieve height adjustment of the detection and positioning mechanism.

[0009] Furthermore, it also includes: an adjustment component, which is arranged on the workbench and is in contact with the side surface of the fixed base plate to achieve position adjustment of the fixed base plate.

[0010] Furthermore, the first sliding block is adapted to the cross-sectional shape of the first sliding rail; and the second sliding block is adapted to the cross-sectional shape of the second sliding rail.

[0011] The utility model relates to a double-stroke flatness quick detection device, and the beneficial effects are as follows: the utility model is reasonably designed, and realizes the positioning of the workpiece and the synchronous fast detection of the flatness index by using two driving cylinders and a multi-stage driving detection and positioning mechanism, and can adapt to a variety of workpieces and has good adaptability. The sliding matching connection of multiple sets of slide rails and sliders improves the stability and centering accuracy of the detection and positioning mechanism during movement. The embodiment provided by the utility model has fast action response, good economy, high positioning accuracy, is easy to realize automatic control, is suitable for batch automatic production, meets the specific needs of users, and can be used in the manufacturing and assembly fields such as automobiles, ships, and aerospace. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

[0013] Figure 1 A three-dimensional structural diagram of a double-stroke flatness quick inspection device provided by an embodiment of the utility model;

[0014] Figure 2 A top view of a double-stroke flatness quick inspection device provided by an embodiment of the utility model;

[0015] Figure 3 One of the partial three-dimensional structural diagrams of a double-stroke flatness quick inspection device provided by an embodiment of the utility model;

[0016] Figure 4 The second partial three-dimensional structural diagram of a double-stroke flatness quick inspection device provided by an embodiment of the utility model;

[0017] Figure 5 A third partial three-dimensional structural diagram of a dual-stroke flatness quick inspection device provided by an embodiment of the utility model;

[0018] Figure 6 A three-dimensional structural diagram of a double-stroke flatness quick inspection device with a workpiece state provided in an embodiment of the utility model.

[0019] In the figure:

[0020] 1. Workbench; 2. First driving cylinder; 3. Fixed base plate; 4. First slide rail; 5. First slider; 6. Detection and positioning mechanism; 601. Bracket; 602. First sensor; 603. Positioning shaft; 604. Protective cover; 605. Adjustment gasket; 7. First sliding base plate; 8. Second driving cylinder; 9. Second slide rail; 10. Second slider; 11. Second sliding base plate; 12. First limit block; 13. Second limit block; 14. Second sensor; 15. Adjustment assembly; 16. Lower body of automobile. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0024] A double-stroke flatness quick inspection device provided by an embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.

[0025] Example

[0026] Figure 1 The figure shows a three-dimensional structure diagram of a double-stroke flatness quick inspection device provided by an embodiment of the utility model. Figure 2 A top view of a double-stroke flatness quick inspection device provided by an embodiment of the utility model is shown. Figure 3 One of the partial three-dimensional structural diagrams of a double-stroke flatness quick inspection device provided by an embodiment of the utility model is shown. Figure 4 The second partial three-dimensional structure diagram of a double-stroke flatness quick inspection device provided by an embodiment of the utility model is shown. Figure 5 The third partial three-dimensional structure diagram of a dual-stroke flatness quick inspection device provided by an embodiment of the utility model is shown. Figure 6 The figure shows a three-dimensional structure diagram of a double-stroke flatness quick inspection device with a workpiece provided by an embodiment of the utility model. Figure 1 to Figure 6 As shown, the double-stroke flatness quick inspection device provided by the embodiment of the utility model is suitable for fast positioning of workpieces and fast online inspection of flatness indicators of specific planes, so as to eliminate defective products at an early stage, and is suitable for the needs of mass automated production. By using multiple cylinders and multi-stage drives, the movement stroke is expanded to improve the adaptability to workpieces, and it can adapt to workpieces of various models; a double-stroke flatness quick inspection device provided by the embodiment of the utility model includes: a workbench 1, a first driving cylinder 2, a fixed base plate 3, a first slide rail 4, a first slider 5, a detection and positioning mechanism 6, a first sliding base plate 7, a second driving cylinder 8, a second slide rail 9, a second slider 10, and a second sliding base plate 11, wherein the first driving cylinder 2 and the fixed base plate 3 are both arranged on the workbench 1 and mechanically connected thereto, and the first driving cylinder 2 can be fixed on one of the fixed base plate 3 or the workbench 1, thereby realizing the first The positions of a driving cylinder 2 and a fixed base plate 3 are relatively fixed; the first sliding base plate 7 is arranged above the fixed base plate 3 and is drivingly connected to the first driving cylinder 2 to realize the rapid linear motion of the first sliding base plate 7; the first sliding base plate 7 is connected to the piston rod in the first driving cylinder 2; the gas supply of the first driving cylinder 2 is controlled by an external control system to realize the extension and retraction of the piston rod in the first driving cylinder 2, thereby realizing the use of the first sliding base plate 7 to drive other components thereon to perform corresponding linear motion; the first sliding base plate 7 is slidably connected to the fixed base plate 3 through the first slide rail 4 and the first slider 5 to maintain the smooth movement of the first sliding base plate 7; specifically, at least one first slider 5 is arranged below the first sliding base plate 7; the first slide rail 4 is arranged above the fixed base plate 3, and the first slider 5 is mechanically connected to the first slide rail 4; Figure 5A structural form of the first slider 5 and the first slide rail 4 is shown in the figure. By using two first slide rails 4 and four first sliders 5, a sliding fit connection between the first slider 5 and the first slide rail 4 is achieved, thereby ensuring the movement accuracy of the first sliding base plate 7. At the same time, support is provided for the detection and positioning mechanism 6 located on the first sliding base plate 7 to prevent the first sliding base plate 7 from sagging, which may cause a decrease in the positioning accuracy of the detection and positioning mechanism 6. Of course, the number of the first sliders 5 and the first slide rails 4 can be adjusted according to the specific needs of the user, and their number is not specifically limited here; wherein the first slider 5 is adapted to the cross-sectional shape of the first slide rail 4, and the cross-sectional shape of the first slide rail 4 may be one of a dovetail shape, an I-shape, a square shape, an X-shape, and a trapezoidal shape, including but not limited to the above-mentioned cross-sectional shapes.

[0027] Similarly, the second driving cylinder 8 and the second sliding base plate 11 are both arranged on the first sliding base plate 7 and mechanically connected thereto, thereby realizing that the positions of the second driving cylinder 8 and the second sliding base plate 11 are relatively fixed, wherein the detection and positioning mechanism 6 is arranged above the second sliding base plate 11 and is drivingly connected to the second driving cylinder 8 through the second sliding base plate 11 to realize the linear motion of the detection and positioning mechanism 6, the second sliding base plate 11 is connected to the piston rod in the second driving cylinder 8, and the gas supply to the second driving cylinder 8 is controlled by an external control system to realize the extension and retraction of the piston rod in the second driving cylinder 8, thereby realizing the use of the first The second sliding base plate 11 drives other components thereon to perform corresponding linear motion, and the second sliding base plate 11 is slidably connected with the first sliding base plate 7 through the second slide rail 9 and the second slider 10 to maintain the smooth movement of the second sliding base plate 11; the second sliding base plate 11 is slidably connected with the first sliding base plate 7 through the second slide rail 9 and the second slider 10 to maintain the smooth movement of the second sliding base plate 11; specifically, at least one second slider 10 is arranged below the second sliding base plate 11, the second slide rail 9 is arranged above the first sliding base plate 7, and the second slider 10 is mechanically slidably connected with the second slide rail 9; Figure 5A structural form of the second slider 10 and the second slide rail 9 is shown in the figure. By using two second slide rails 9 and two second sliders 10, the second slider 10 and the second slide rail 9 are connected in a sliding manner, the motion accuracy of the second sliding base plate 11 is ensured, and at the same time, support is provided for the detection and positioning mechanism 6 located on the second sliding base plate 11, so as to prevent the second sliding base plate 11 from sagging and causing the positioning accuracy of the detection and positioning mechanism 6 to decrease. Of course, the number of the second slider 10 and the second slide rail 9 can be adjusted according to the specific needs of the user, and the number of the second slider 10 and the second slide rail 9 is not specifically limited here; wherein the second slider 10 is adapted to the cross-sectional shape of the second slide rail 9, and the cross-sectional shape of the second slide rail 9 can be one of dovetail, I-shaped, square, X-shaped, and trapezoidal, including but not limited to the above cross-sectional shapes. The embodiment of the utility model realizes the movement of the double-stage stroke by using two driving cylinders (the first driving cylinder 2 and the second driving cylinder 8) and two sets of slide rail slider combinations (the first slide rail 4, the first slider 5, the second slide rail 9, and the second slider 10), the range of motion stroke is larger, and it can adapt to the workpieces of more models, and the adaptability is better.

[0028] More specifically, the detection and positioning mechanism 6 includes: a bracket 601, at least three first sensors 602, and a positioning shaft 603, wherein the bracket 601 is arranged on the second sliding base plate 11 and mechanically connected thereto, and a plurality of first sensors 602 are evenly arranged around the positioning shaft 603 and mechanically fixed on the bracket 601, and the flatness index detection of the workpiece surface can be realized by detecting the distance between the plurality of first sensors 602 and the workpiece surface. Generally, the number of the first sensors 602 is 3-6. Figure 3 The structural distribution form of four first sensors 602 is shown in the figure. Compared with setting three first sensors 602, setting four first sensors 602 can improve the detection accuracy and reduce the measurement error. Of course, it is not necessary to use too many first sensors 602. The flatness detection of the plane to be measured of the workpiece is realized by using the basic principle of determining a plane with three points. The output signal of the first sensor 602 is collected by an external data acquisition system and solved to quickly realize the flatness index detection of the workpiece; the first driving cylinder 2 and the second driving cylinder 8 can be used to drive the first sliding bottom plate 7 and the second sliding bottom plate 11 respectively or simultaneously and drive the detection positioning mechanism 6 to achieve the purpose of rapid action. The use of the first driving cylinder 2 and the second driving cylinder 8 here also utilizes the characteristics of cylinders being widely used in the automobile manufacturing industry, fast response and good economy, and can adapt to workpieces of various specifications. Figure 6The lower body 16 of the car can adapt to different models; the positioning shaft 603 is matched with the hole at the corresponding position on the workpiece to realize the rapid positioning of the workpiece. In order to facilitate the centering and smooth introduction of the shaft and the hole, one end of the positioning shaft 603 is generally provided with a chamfer to facilitate the introduction of the positioning shaft 603. Figure 4 A structural form of the positioning shaft 603 is shown in FIG. 1 , and the corresponding workpiece is a local structural shape of the lower body 16 of the automobile (due to the limitation of the drawing, Figure 6 Only a part of the lower body 16 of the automobile is shown in the figure), of course, the structural shape of the positioning shaft 603 can be adjusted accordingly according to user needs or the type of workpiece to adapt to more types of workpieces; here, the first sensor 602 and the positioning shaft 603 are both arranged on the bracket 601 and perform synchronous linear motion with the bracket 601 to realize the positioning of the specified plane of the workpiece and rapid flatness detection.

[0029] In a double-stroke flatness quick inspection device provided by an embodiment of the utility model, as a further improvement, it also includes: a first limit block 12 and a second limit block 13. The first limit block 12 is arranged at one end of the fixed bottom plate 3 and is mechanically connected to the fixed bottom plate 3 or the workbench 1 to achieve the position limitation of the first sliding bottom plate 7. The contact connection between the first limit block 12 and the first sliding bottom plate 7 can play a corresponding role in limiting and buffering. Similarly, the second limit block 13 is arranged at one end of the first sliding bottom plate 7 and is mechanically connected to the first sliding bottom plate 7 to achieve the position limitation of the second sliding bottom plate 11. The contact connection between the second limit block 13 and the second sliding bottom plate 11 can play a corresponding role in limiting and buffering.

[0030] A double-stroke flatness quick inspection device provided in an embodiment of the utility model, as a further improvement, also includes: a second sensor 14, the second sensor 14 is arranged on the fixed base plate 3 or the workbench 1 to realize the state recognition of the workpiece, the second sensor 14 judges the contact position with the workpiece and outputs a corresponding signal, and then identifies the state of the workpiece, thereby improving the working reliability and automation degree of the double-stroke flatness quick inspection device, preventing misoperation, and improving safety.

[0031] In a double-stroke flatness quick inspection device provided by an embodiment of the utility model, as a further improvement, the detection and positioning mechanism 6 also includes: a protective cover 604, the protective cover 604 is mechanically connected to the bracket 601, and the first sensor 602 is placed in the internal space of the protective cover 604 to achieve safety protection for the first sensor 602, which can effectively avoid bumps on the first sensor 602, protect the first sensor 602 in the shape of a long rod, and try to avoid the detection accuracy of the first sensor 602 being affected by external factors.

[0032] In a double-stroke flatness quick inspection device provided by an embodiment of the utility model, optionally, the detection and positioning mechanism 6 also includes: an adjusting gasket 605, the adjusting gasket 605 is arranged between the bracket 601 and the second sliding base plate 11 to realize the height adjustment of the detection and positioning mechanism 6, so as to compensate for the manufacturing and assembly errors of the detection and positioning mechanism 6 and ensure the centering accuracy; in a double-stroke flatness quick inspection device provided by an embodiment of the utility model, the adjusting gasket 605 can be arranged in one group or multiple groups; of course, if the position accuracy of the detection and positioning mechanism 6 can meet the requirements without setting the adjusting gasket 605, it is also acceptable.

[0033] In a double-stroke flatness quick inspection device provided by an embodiment of the utility model, optionally, it also includes: an adjustment component 15, which is arranged on a workbench and is in contact with the side of the fixed base plate 3 to achieve position adjustment of the fixed base plate 3. By adjusting the adjustment bolts in the adjustment component 15 and squeezing the side of the fixed base plate 3 by the adjustment bolts to move it, the position of the fixed base plate 3 on the workbench 1 can be adjusted, thereby more accurately achieving the centering positioning of the detection positioning mechanism 6 and the workpiece to compensate for the manufacturing and assembly errors of the detection positioning mechanism 6.

[0034] It is worth noting that the first driving cylinder 2 and the second driving cylinder 8 can also be replaced by driving devices such as driving motors and solenoid valves, as long as the rapid linear motion of the first sliding base plate 7 and the second sliding base plate 11 can be achieved.

[0035] In addition, it is worth mentioning that in a double-stroke flatness quick inspection device provided in an embodiment of the utility model, two driving cylinders and sliding base plates and corresponding sliding rails and sliders are used to make up for the lack of adaptability of a single driving cylinder in a single-stage drive. Of course, more than two driving cylinders and sliding base plates can also be used to achieve multi-stage drive in a multi-stroke situation. Corresponding improvements can be made with reference to the embodiment of the utility model to achieve better applicability of a double-stroke flatness quick inspection device provided in an embodiment of the utility model.

[0036] Compared with the prior art, the utility model provides a double-stroke flatness quick detection device with a reasonable design. By using two driving cylinders to drive the detection and positioning mechanism 6 in multiple stages, the workpiece can be positioned while the flatness index is quickly detected simultaneously. The device can adapt to a variety of workpieces and has good adaptability. The sliding matching connection of multiple sets of slide rails and sliders improves the stability and centering accuracy of the detection and positioning mechanism 6 during movement. The embodiment provided by the utility model has fast action response, good economy, high positioning accuracy, is easy to realize automated control, is suitable for mass automated production, meets user-specific needs, and can be used in manufacturing and assembly fields such as automobiles, ships, and aerospace.

[0037] There are a few points to note:

[0038] (1) Unless otherwise defined, in the embodiments of the present invention and the accompanying drawings, the same reference numerals represent the same meanings.

[0039] (2) The drawings of the embodiments of the present utility model only relate to the structures related to the embodiments of the present utility model, and other structures may refer to the conventional designs.

[0040] (3) For the sake of clarity, in the drawings used to describe the embodiments of the present invention, some structures in the drawings may be enlarged or reduced, that is, these drawings are not drawn according to the actual scale.

[0041] (4) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0042] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A double-stroke flatness quick inspection device, It is characterized in that include: A workbench (1), a first driving cylinder (2), a fixed base plate (3), a first slide rail (4), a first slider (5), a detection and positioning mechanism (6), a first sliding base plate (7), a second driving cylinder (8), a second slide rail (9), a second slider (10), and a second sliding base plate (11), wherein the first driving cylinder (2) and the fixed base plate (3) are both arranged on the workbench (1) and mechanically connected thereto, the first sliding base plate (7) is arranged above the fixed base plate (3) and is drivingly connected to the first driving cylinder (2) for realizing the linear motion of the first sliding base plate (7), the first sliding base plate (7) and the fixed base plate (3) are connected via the first slide rail (4), The first sliding block (5) is slidably connected to maintain the smooth movement of the first sliding base plate (7); the second driving cylinder (8) and the second sliding base plate (11) are both arranged on the first sliding base plate (7) and mechanically connected thereto; the detection and positioning mechanism (6) is arranged above the second sliding base plate (11) and is drivingly connected to the second driving cylinder (8) through the second sliding base plate (11) to achieve the linear movement of the detection and positioning mechanism (6); the second sliding base plate (11) and the first sliding base plate (7) are slidably connected to maintain the smooth movement of the second sliding base plate (11) through the second slide rail (9) and the second sliding block (10); The detection and positioning mechanism (6) comprises: a bracket (601), at least three first sensors (602), and a positioning shaft (603); the bracket (601) is arranged on the second sliding base plate (11) and is mechanically connected thereto; a plurality of first sensors (602) are evenly distributed around the positioning shaft (603); the first sensors (602) and the positioning shaft (603) are both arranged on the bracket (601) and are driven by the first driving cylinder (2) and / or the second driving cylinder (8) to perform synchronous linear motion with the bracket (601) to realize positioning of a specified plane of a workpiece and rapid flatness detection.

2. The double-stroke flatness quick inspection device according to claim 1, It is characterized in that Also includes: A first limit block (12) and a second limit block (13), wherein the first limit block (12) is arranged at one end of the fixed base plate (3) and is mechanically connected to the fixed base plate (3) or the workbench (1) for realizing position limitation of the first sliding base plate (7); and the second limit block (13) is arranged at one end of the first sliding base plate (7) and is mechanically connected to the first sliding base plate (7) for realizing position limitation of the second sliding base plate (11).

3. The double-stroke flatness quick inspection device according to claim 1 or 2, It is characterized in that Also includes: A second sensor (14), wherein the second sensor (14) is arranged on the fixed base plate (3) or the workbench (1) and is used to realize state recognition of a workpiece.

4. The double-stroke flatness quick inspection device according to claim 3, It is characterized in that The detection and positioning mechanism (6) further comprises: a protective cover (604), wherein the protective cover (604) is mechanically connected to the bracket (601), and the first sensor (602) is placed inside the protective cover (604) to achieve safety protection for the first sensor (602).

5. The double-stroke flatness quick inspection device according to claim 4, It is characterized in that The detection and positioning mechanism (6) further comprises: an adjustment gasket (605), wherein the adjustment gasket (605) is arranged between the bracket (601) and the second sliding base plate (11) and is used to achieve height adjustment of the detection and positioning mechanism (6).

6. The double-stroke flatness quick inspection device according to claim 1, It is characterized in that It also comprises: an adjustment component (15), wherein the adjustment component (15) is arranged on the workbench (1) and is in contact with the side surface of the fixed base plate (3) to adjust the position of the fixed base plate (3).

7. The double-stroke flatness quick inspection device according to claim 1, It is characterized in that The first sliding block (5) is adapted to the cross-sectional shape of the first sliding rail (4); and the second sliding block (10) is adapted to the cross-sectional shape of the second sliding rail (9).

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