CN219337464U - Flatness detection device - Google Patents

Abstract

The utility model relates to the technical field of detection devices and discloses a flatness detection device, which comprises a rotary transfer carrier, wherein the rotary transfer carrier comprises a plurality of feeding areas, and each feeding area can be respectively and rotatably transferred to a detection area, so that the flatness detection device is compact in structure; the positioning clamps are respectively arranged on each feeding area and are respectively used for clamping and positioning one object to be detected, so that accurate positioning can be ensured; the acquisition and detection mechanism comprises a vision camera and two laser measuring devices; the visual camera and the two laser measurers are respectively arranged at the output ends of the positioning mechanism, the positioning mechanism can drive the visual camera and the two laser measurers to translate above the detection area along the first direction and/or the second direction, the visual camera can perform visual calibration positioning on two objects to be detected in the detection area, and the two laser measurers can respectively perform synchronous laser dotting flatness detection on the corresponding objects to be detected, so that the measurement is efficient and quick.

Description

Flatness detection device

Technical Field

The utility model relates to the technical field of detection devices, in particular to a flatness detection device.

Background

Flatness measurement is used to detect the actual surface flatness of an object under inspection. The measuring method is various and mainly comprises the methods of feeler gauge measurement, liquid level measurement, laser measurement and the like.

The flatness detection is usually required in the production process of common components such as a Watch back cover, a liquid crystal panel and the like. The flatness detection device adopting the laser measurement mode has wide application in industrial production. The utility model patent publication No. CN211234325U discloses a flatness measuring device, wherein a camera calibration module performs camera calibration on an element to be measured and outputs positioning data of the element to be measured to an electric control module, the electric control module controls a moving module to drive a laser dotting module to move and emit a laser dotting signal to the surface of the element to be measured according to the positioning data of the element to be measured, the laser dotting module receives a laser dotting reflection signal reflected on the surface of the element to be measured and outputs corresponding height feedback data to the electric control module, and the electric control module calculates and outputs the flatness of the surface of the element to be measured according to the height feedback data.

Disclosure of Invention

The flatness detection device which has a compact structure and can realize accurate positioning, high efficiency and rapid measurement of the object to be detected is one of main directions of continuous optimization and improvement of related equipment.

The utility model aims to provide a flatness detection device which is compact in size and high in flatness detection efficiency, and can ensure accurate positioning of an object to be detected.

To achieve the purpose, the utility model adopts the following technical scheme:

a flatness detection apparatus, comprising:

the rotary transfer carrier comprises a plurality of feeding areas, and each feeding area of the rotary transfer carrier can be respectively and rotatably transferred to the detection area;

the positioning clamps are respectively arranged on each feeding area of the rotary transfer carrier and are respectively used for clamping and positioning one object to be detected;

the acquisition and detection mechanism comprises a vision camera and two laser measuring devices;

the visual camera and the two laser measurers are respectively arranged at the output end of the positioning mechanism, the positioning mechanism can drive the visual camera and the two laser measurers to translate along a first direction and/or a second direction above the detection area, the visual camera can perform visual calibration positioning on two objects to be detected in the detection area, the two laser measurers can respectively perform synchronous laser dotting flatness detection on the objects to be detected corresponding to the two objects to be detected, and the second direction is perpendicular to the first direction.

Further, the positioning mechanism includes:

a first direction displacement assembly;

the second direction displacement assembly is arranged on the first direction displacement assembly, and the vision camera and the two laser measuring devices are arranged at the output end of the second direction displacement assembly.

Further, the first direction displacement assembly includes:

a first direction guide rail extending along the first direction;

the first direction sliding block is arranged on the first direction guide rail in a sliding manner, and the second direction displacement assembly is arranged on the first direction sliding block;

the first screw nut driving pair comprises a first servo motor, a first screw rod in transmission connection with the first servo motor, and a first nut in threaded connection with the first screw rod, wherein the first nut is connected with the first direction sliding block or the second direction displacement assembly so as to drive the second direction displacement assembly to displace along the first direction.

Further, the second direction displacement assembly includes:

a second direction guide rail extending along the second direction;

the second direction sliding block is arranged on the first direction guide rail in a sliding manner and is connected to the first direction sliding block;

the second screw nut driving pair comprises a second servo motor arranged on the first direction sliding block, a second screw rod in transmission connection with the second servo motor, a second nut in threaded connection with the second screw rod, and a second nut connected with the second direction guide rail so as to drive the second direction guide rail to displace along the second direction, wherein the vision camera and the two laser measuring devices are respectively arranged on the second direction guide rail.

Further, the positioning mechanism further includes:

the visual camera is arranged at the output end of the second direction displacement assembly through the third direction displacement assembly, and the third direction displacement assembly is used for driving the visual camera to displace along a third direction perpendicular to the first direction and the second direction.

Further, the positioning jig includes:

the carrier block is fixed in the feeding area and comprises a horizontal carrier surface for supporting an object to be detected;

the side positioning block assembly is arranged at the side edge of the carrying block and is used for propping against the side part of the object to be detected supported on the carrying block;

the clamping execution assembly is arranged opposite to the side positioning block assembly and used for pushing the carrier block towards the side positioning block assembly so as to clamp the zero-degree-of-freedom positioning of the object to be detected on the carrier block.

Further, the rotary transfer stage includes:

the rotary disc is disc-shaped, and a plurality of feeding areas are uniformly distributed on the disc surface of the rotary disc along the circumferential direction of the rotary disc;

the output end of the rotary driving source is connected with the rotary disc so as to drive the rotary disc to rotate, so that each feeding area is respectively and rotationally transferred to the detection area;

the positioning calibration block is arranged on the disc surface of the rotary disc and is configured to calibrate the positioning of the feeding area by the acquisition detection mechanism.

Further, the vision camera and the two laser measuring devices are arranged at intervals side by side along the first direction, and the vision camera is positioned between the two laser measuring devices;

when the feeding area with the two objects to be detected clamped and positioned is stopped in the detection area, the two objects to be detected are arranged at intervals side by side along the first direction, and the interval is equal to the interval of the two laser measuring devices.

Further, the first through-hole has been seted up at the center of rotatory disc, the second through-hole of intercommunication first through-hole is seted up at the middle part of rotatory driving source, flatness detection device still includes:

the universal rotary joint comprises a fixed joint part and a rotary joint part, wherein the fixed joint part is configured to be communicated with external pneumatic equipment in a ventilation mode, the rotary joint part is coaxially connected with the fixed joint part, an air passage in the rotary joint part is communicated with an air passage in the fixed joint part, each positioning clamp is communicated with an air inlet of the rotary joint part through a communication air pipe, each communication air pipe is connected with a switching valve in series, and the universal rotary joint is accommodated in the first through hole and the second through hole.

Further, the method further comprises the following steps:

the central controller is electrically connected with the rotary transfer carrier, the positioning clamp, the acquisition and detection mechanism and the positioning mechanism respectively.

Further, the method further comprises the following steps:

the rotary transfer carrier, the positioning fixture, the acquisition and detection mechanism and the positioning mechanism are respectively arranged in the cabinet.

The utility model has the beneficial effects that:

the rotary transfer carrier of the flatness detection device comprises a plurality of feeding areas, each feeding area can be respectively and rotatably transferred to the detection area, and the rotary feeding structure is compact; each feeding area is respectively provided with two positioning clamps, and each positioning clamp is respectively used for clamping and positioning one object to be tested, so that accurate positioning can be ensured; the acquisition and detection mechanism comprises a vision camera and two laser measuring devices; the visual camera and the two laser measurers are respectively arranged at the output end of the positioning mechanism, the positioning mechanism can drive the visual camera and the two laser measurers to translate above the detection area along the first direction and/or the second direction, the visual camera can perform visual calibration positioning on two objects to be detected in the detection area, and the two laser measurers can respectively perform synchronous laser dotting flatness detection on the objects to be detected corresponding to the two laser measurers, so that the measurement is efficient and quick.

Drawings

FIG. 1 is a schematic top view of an object to be tested;

FIG. 2 is an overall schematic view of a flatness detection apparatus provided by the present utility model;

FIG. 3 is a schematic diagram I of the flatness detection apparatus provided by the present utility model after the housing of the cabinet is removed;

FIG. 4 is a second schematic diagram of the flatness detection apparatus according to the present utility model after the housing of the cabinet is removed;

FIG. 5 is a schematic view of a positioning fixture provided by the present utility model;

fig. 6 is a schematic view illustrating a disassembly of a rotary transfer stage area according to the present utility model.

In the figure:

100. an object to be measured;

x, a first direction; y, second direction; z, third direction;

1. a rotary transfer stage; 11. a rotating disc; 111. a first through hole; 12. a rotation driving source; 121. a second through hole; 13. positioning a calibration block;

2. positioning a clamp; 21. a carrier block; 22. a side positioning block assembly; 23. a clamp actuation assembly;

3. the acquisition and detection mechanism; 31. a vision camera; 32. a laser measurer;

4. a positioning mechanism; 41. a first direction displacement assembly; 42. a second direction displacement assembly; 43. a third direction displacement assembly;

5. a central controller; 6. a cabinet; 7. a universal rotary joint; 71. a fixed joint part; 72. a swivel joint; 8. a switch valve; 9. rotating the boss; 91. a third through hole; 10. supplementing a light source; 14. an air pipe fixing frame; 15. an alarm.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1, in order to detect the flatness of an object to be detected 100, the present embodiment is particularly referred to as a back cover of a Watch.

As shown in fig. 2-5, the embodiment provides a flatness detection device with compact structure, which can realize accurate positioning, high efficiency and rapid measurement of the object to be detected 100. In the figure, X represents a first direction, Y represents a second direction, and Z represents a third direction. The flatness detection device comprises a rotary transfer carrying platform 1, a positioning fixture 2, a collection detection mechanism 3, a positioning mechanism 4, a central controller 5 and a cabinet 6. The central controller 5 is electrically connected with the rotary transfer carrier 1, the positioning fixture 2, the acquisition and detection mechanism 3 and the positioning mechanism 4 respectively. The rotary transfer carrier 1, the positioning fixture 2, the acquisition and detection mechanism 3 and the positioning mechanism 4 are respectively arranged in the cabinet 6. The central controller 5 is also arranged in the cabinet 6.

As shown in fig. 2-4, the rotary transfer carrier 1 includes a plurality of feeding areas (not shown), and each feeding area of the rotary transfer carrier 1 can be respectively and rotatably transferred to a detection area (not shown); in this embodiment, the feeding area is four in total. Two positioning fixtures 2 are respectively arranged on each feeding area of the rotary transfer carrier 1, and each positioning fixture 2 is respectively used for clamping and positioning one object 100 to be tested; the acquisition and detection mechanism 3 comprises a vision camera 31 and two laser measuring devices 32, wherein the laser measuring devices 32 are displacement laser sensors; the vision camera 31 and the two laser measurers 32 are respectively arranged at the output end of the positioning mechanism 4, the positioning mechanism 4 can drive the vision camera 31 and the two laser measurers 32 to translate above the detection area along the first direction and/or the second direction, the vision camera 31 can perform vision calibration positioning on the two objects to be detected 100 in the detection area, the two laser measurers 32 can respectively perform synchronous laser dotting flatness detection on the corresponding objects to be detected 100, and the second direction is perpendicular to the first direction.

In the embodiment, each feeding area can be respectively and rotatably transferred to the detection area, and the rotary feeding structure of the rotary transfer carrier 1 is compact; two positioning fixtures 2 are respectively arranged on each feeding area, and each positioning fixture 2 is respectively used for clamping and positioning one object 100 to be tested, so that accurate positioning can be ensured; the visual camera 31 and the two laser measurers 32 of the acquisition detection mechanism 3 are respectively arranged at the output end of the positioning mechanism 4, the positioning mechanism 4 can drive the visual camera 31 and the two laser measurers 32 to translate above the detection area along the first direction and/or the second direction, the visual camera 31 can perform visual calibration and positioning on the two objects to be detected 100 in the detection area, and the two laser measurers 32 can respectively perform synchronous laser dotting flatness detection on the respective corresponding objects to be detected 100, so that the measurement is efficient and quick.

Specifically, as shown in fig. 2 to 4, the positioning mechanism 4 includes a first direction displacement assembly 41 and a second direction displacement assembly 42. The second direction displacement assembly 42 is disposed on the first direction displacement assembly 41, and the vision camera 31 and the two laser measurers 32 are both disposed at the output end of the second direction displacement assembly 42.

More specifically, the first direction displacement assembly 41 includes a first direction guide rail, a first direction slider, and a first lead screw nut drive pair. The second direction displacement assembly 42 includes a second direction guide rail, a second direction slider, and a second lead screw nut drive pair. The first direction guide rail is arranged in an extending way along a first direction; the first direction sliding block is arranged on the first direction guide rail in a sliding way, and the second direction displacement assembly 42 is arranged on the first direction sliding block; the first screw nut driving pair comprises a first servo motor, a first screw rod in transmission connection with the first servo motor, and a first nut in threaded connection with the first screw rod, wherein the first nut is connected with the first direction sliding block or the second direction displacement assembly 42 so as to drive the second direction displacement assembly 42 to displace along the first direction. The second direction guide rail is arranged in an extending way along the second direction; the second direction sliding block is arranged on the first direction guide rail in a sliding way and is connected to the first direction sliding block; the second screw nut driving pair comprises a second servo motor arranged on the first direction sliding block, a second screw in transmission connection with the second servo motor, a second nut in threaded connection with the second screw, and a second nut connected with the second direction guide rail to drive the second direction guide rail to displace along the second direction, wherein the vision camera 31 and the two laser measuring devices 32 are respectively arranged on the second direction guide rail. The first screw nut driving pair and the second screw nut driving pair are matched with the screw nut structure through the servo driving of the first servo motor and the second servo motor respectively, so that the accurate adjustment of the displacement of the vision camera 31 and the displacement of the two laser measuring devices 32 can be realized.

It should be noted that, the visual camera calibration of the visual camera 31, the mechanism ranging method of the laser measurer 32, and the flatness measuring method are all of the prior art, and therefore will not be described in detail.

Still further, as shown in fig. 3, the positioning mechanism 4 further includes a third direction displacement assembly 43. The vision camera 31 is disposed at the output end of the second direction displacement assembly 42 through the third direction displacement assembly 43, and the third direction displacement assembly 43 is used for driving the vision camera 31 to displace along a third direction perpendicular to the first direction and the second direction. The third direction displacement assembly 43 may be a linear displacement adjustment structure of a linear cylinder in combination with a slide rail slider.

In order to be able to accurately clamp the test object 100 in the loading region. As shown in fig. 5, the positioning jig 2 includes a carrier block 21, a side positioning block assembly 22, and a clamp performing assembly 23. The carrier block 21 is fixed in the feeding area, and the carrier block 21 comprises a horizontal carrier surface for supporting the object 100 to be tested; the side positioning block assembly 22 is disposed at a side position of the carrier block 21, and is used for abutting against a side portion of the object 100 to be tested supported on the carrier block 21; the clamping executing assembly 23 is arranged opposite to the side positioning block assembly 22 and is used for pushing the carrier block 21 towards the side positioning block assembly 22 so as to clamp the zero-freedom-degree positioning of the object to be detected on the carrier block 21. In this embodiment, the clamping executing assembly 23 is two straight pushing cylinders, the side positioning block assembly 22 may be an L-shaped positioning block, or may be two single blocks, and are arranged in an L shape to respectively abut against two sides of the square object 100 to be tested, and cooperate with the two straight pushing cylinders to realize clamping and positioning of the object 100 to be tested. Simple structure, low cost and accurate positioning.

In addition, in the present embodiment, as shown in fig. 3 to 4, the rotary transfer stage 1 includes a rotary disk 11, a rotary drive source 12, and a positioning calibration block 13. The rotary disc 11 is disc-shaped, and a plurality of feeding areas are uniformly distributed on the disc surface of the rotary disc 11 along the circumferential direction of the rotary disc 11; the output end of the rotary driving source 12 is connected with the rotary disc 11 to drive the rotary disc 11 to rotate, so that each feeding area is respectively and rotationally transferred to the detection area; the positioning calibration block 13 is arranged on the disk surface of the rotary disk 11, and the positioning calibration block 13 is configured to collect positioning calibration of the detection mechanism 3 on the feeding area. The specific calibration mode is that after one feeding area adjacent to the positioning calibration block 13 moves to a detection area, the adjustment acquisition detection mechanism 3 adopts the laser measurer 32 to correlation the center of the cylindrical positioning calibration block 13, so as to realize zero setting calibration of coordinates.

Further, as shown in fig. 6, in the present embodiment, a first through hole 111 is formed in the center of the rotary disc 11, a second through hole 121 communicating with the first through hole 111 is formed in the middle of the rotary driving source 12, the flatness detecting device further includes a universal rotary joint 7, the universal rotary joint 7 includes a fixed joint portion 71 configured to be in ventilation communication with an external pneumatic device, and a rotary joint portion 72 coaxially connected with the fixed joint portion 71, an air passage in the rotary joint portion 72 is communicated with an air passage in the fixed joint portion 71, each positioning fixture 2 is communicated with an air inlet of the rotary joint portion 72 through a communication air pipe, and a switching valve 8 is connected in series to each communication air pipe, and the universal rotary joint 7 is accommodated in the first through hole 111 and the second through hole 121. It should be noted that, the internal air passage of the universal rotary joint 7 is an existing structure, and will not be described again.

In the embodiment, the output end of the rotary driving source 12 is coaxially connected with the rotary disc 11 to drive the rotary disc 11 to rotate, and the disc-type structural space arrangement is compact; a first through hole 111 is formed in the center of the rotary disc 11, and a second through hole 121 communicated with the first through hole 111 is formed in the middle of the rotary driving source 12; the rotary disc 11 is provided with a plurality of positioning clamps 2, and each positioning clamp 2 is used for clamping and positioning one object 100 to be tested, so as to realize clamping and positioning of the object 100 to be tested; in addition, the universal rotary joint 7 includes a fixed joint part 71 configured to be in ventilation communication with an external pneumatic device (not shown in the drawings), a rotary joint part 72 coaxially connected with the fixed joint part 71, an air passage in the rotary joint part 72 communicates with an air passage in the fixed joint part 71, each positioning jig 2 communicates with an air inlet of the rotary joint part 72 through a communication air pipe, and a switching valve 8 is connected in series to each communication air pipe, and the universal rotary joint 7 is accommodated in the first through hole 111 and the second through hole 121, so that the rotary disk 11 performs arbitrary-angle rotary feeding, and rotational rotation of the communication air pipe on the rotary disk 11 with respect to the pneumatic device which cannot be rotated can be ensured without causing twisting.

Further, in the present embodiment, the rotation driving source 12 is a DD motor. DD is the short name of direct driver, is by servo driver, motor body, connecting wire constitution, is not needed belt, gear, ball screw etc. speed reducer's direct drive motor, also called electronic type swivel work head, is applicable to the equipment mechanism that requires relatively high accuracy.

In addition, as shown in fig. 6, the flatness detecting device further includes a rotation boss 9, the rotation boss 9 is coaxially fixed to the disk surface of the rotation disk 11, and a third through hole 91 communicating with the first through hole 111 is opened, and the universal rotary joint 7 is located in the third through hole 91.

Further, as shown in fig. 6, the flatness detecting device further includes a supplemental light source 10. The supplemental light source 10 is disposed on the rotating boss 9. The top chamfer of the rotating boss 9 forms an inclined plane on which the supplemental light source 10 is disposed. When the flatness detection device is in a darker environment, light can be supplemented by the supplemental light source 10. Furthermore, the flatness detection device further includes an alarm 15. The alarm 15 is arranged on the rotary boss 9, and the alarm 15 is used for fault alarm.

In order to avoid mutual interference due to regular pipeline wiring, as shown in fig. 3-6, the rotary disc 11 is further provided with a plurality of air pipe fixing frames 14, the communicating air pipes are fixedly connected with the air pipe fixing frames 14, and the plurality of air pipe fixing frames 14 are uniformly distributed around the universal rotary joint 7 along the circumferential direction.

In this embodiment, the clamping executing assembly 23 includes two pressing cylinders, the pressing directions of the two pressing cylinders are perpendicular to each other, and the clamping positioning of the object to be measured 100 is completed through the pressing action.

As shown in fig. 3-6, in this embodiment, there are eight positioning fixtures 2, and eight positioning fixtures 2 are circumferentially arranged on the disc surface of the rotating disc 11 at intervals, four air pipe fixing frames 14 are respectively and correspondingly fixed with four air pipes connected to each air pipe fixing frame 14, and the positioning fixtures are orderly arranged, so that interference of the air pipes connected to each other and turbulence in the rotating process are avoided.

Further, as shown in fig. 6, in the present embodiment, the air pipe fixing frame 14 is arranged between the positioning fixture 2 and the universal rotary joint 7 along the radial direction of the rotary disk 11, so that the disk surface space of the rotary disk 11 is fully utilized, and the arrangement structure is neat and compact.

In addition, in the present embodiment, as shown in fig. 3 to 4, in order to be able to perform spot laser dotting measurement on two objects to be measured 100 simultaneously, the vision camera 31 and the two laser measurers 32 are arranged at intervals side by side along the first direction, and the vision camera 31 is located between the two laser measurers 32; when the feeding area where the two objects to be measured 100 are clamped and positioned is stopped in the detection area, the two objects to be measured 100 are arranged at intervals side by side along the first direction, and the interval is equal to the interval of the two laser measuring devices 32. And then the two laser measurers 32 are synchronously adjusted to move along the first direction and the second direction by the positioning mechanism 4, so that the multipoint laser dotting measurement of the two objects to be measured 100 is respectively finished, and finally the flatness detection of the two objects to be measured 100 is quickly finished.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims (10)

1. A flatness detecting device, characterized by comprising:

a rotary transfer carrier (1) comprising a plurality of feeding areas thereon, wherein each feeding area of the rotary transfer carrier (1) can be respectively and rotatably transferred to a detection area;

the positioning fixtures (2) are respectively arranged on each feeding area of the rotary transfer carrying platform (1), and each positioning fixture (2) is respectively used for clamping and positioning one object (100) to be detected;

the acquisition and detection mechanism (3) comprises a vision camera (31) and two laser measuring devices (32);

the positioning mechanism (4), visual camera (31) and two laser measurement ware (32) set up respectively in the output of positioning mechanism (4), positioning mechanism (4) can drive visual camera (31) and two laser measurement ware (32) are in the top of detection area is followed first direction and/or second direction translation, visual camera (31) can be right two await measuring thing (100) of detection area are carried out the visual calibration location, two laser measurement ware (32) can carry out synchronous laser to respectively and strike the point flatness and detect to respectively corresponding await measuring thing (100), the second direction is perpendicular to first direction.

2. The flatness detection apparatus according to claim 1, characterized in that the positioning mechanism (4) includes:

a first direction displacement assembly (41);

the second direction displacement assembly (42) is arranged on the first direction displacement assembly (41), and the vision camera (31) and the two laser measuring devices (32) are both arranged at the output end of the second direction displacement assembly (42).

3. The flatness detection apparatus according to claim 2, wherein the first direction displacement assembly (41) includes:

a first direction guide rail extending along the first direction;

a first direction slider slidably disposed on the first direction rail, the second direction displacement assembly (42) being disposed on the first direction slider;

the first screw nut driving pair comprises a first servo motor, a first screw rod in transmission connection with the first servo motor, and a first nut in threaded connection with the first screw rod, wherein the first nut is connected with the first direction sliding block or the second direction displacement assembly (42) so as to drive the second direction displacement assembly (42) to displace along the first direction.

4. A flatness detection apparatus according to claim 3, wherein the second direction displacement assembly (42) comprises:

a second direction guide rail extending along the second direction;

the second direction sliding block is arranged on the first direction guide rail in a sliding manner and is connected to the first direction sliding block;

the second screw nut driving pair comprises a second servo motor arranged on the first direction sliding block, a second screw rod in transmission connection with the second servo motor, a second nut in threaded connection with the second screw rod, and a second nut connected with the second direction guide rail so as to drive the second direction guide rail to displace along the second direction, wherein the vision camera (31) and the two laser measuring devices (32) are respectively arranged on the second direction guide rail.

5. The flatness detection apparatus according to claim 2, characterized in that the positioning mechanism (4) further includes:

the visual camera (31) is arranged at the output end of the second direction displacement assembly (42) through the third direction displacement assembly (43), and the third direction displacement assembly (43) is used for driving the visual camera (31) to displace along a third direction perpendicular to the first direction and the second direction.

6. Flatness detection device according to claim 1, characterized in that the positioning fixture (2) comprises:

the carrier block (21) is fixed in the feeding area, and the carrier block (21) comprises a horizontal carrier surface for supporting an object to be detected (100);

the side positioning block assembly (22) is arranged at the side edge of the carrying block (21) and is used for propping against the side part of the object (100) to be detected supported on the carrying block (21);

the clamping execution assembly (23) is arranged opposite to the side positioning block assembly (22) and used for pushing the carrier block (21) towards the side positioning block assembly (22) so as to clamp the zero-freedom-degree positioning of the object to be detected (100) on the carrier block (21).

7. The flatness detection apparatus according to claim 1, wherein the rotary transfer stage (1) includes:

the rotary disc (11) is disc-shaped, and a plurality of feeding areas are uniformly distributed on the disc surface of the rotary disc (11) along the circumferential direction of the rotary disc (11);

the output end of the rotary driving source (12) is connected with the rotary disc (11) to drive the rotary disc (11) to rotate, so that each feeding area is respectively and rotationally transferred to the detection area;

the positioning calibration block (13) is arranged on the disc surface of the rotary disc (11) and is configured to calibrate the positioning of the collecting and detecting mechanism (3) on the feeding area.

8. The flatness detection apparatus according to claim 7, characterized in that a first through hole (111) is provided in a center of the rotary disk (11), a second through hole (121) communicating with the first through hole (111) is provided in a middle portion of the rotary drive source (12), the flatness detection apparatus further comprising:

universal rotary joint (7), including be configured to with outside pneumatic equipment ventilation intercommunication fixed joint portion (71), with fixed joint portion (71) coaxial coupling's rotary joint portion (72), the air flue in rotary joint portion (72) with the air flue in fixed joint portion (71) communicates, each positioning fixture (2) through the intercommunication trachea with the air inlet intercommunication of rotary joint portion (72) and each connect in series on the intercommunication trachea ooff valve (8), universal rotary joint (7) hold in first through-hole (111) with in second through-hole (121).

9. The flatness detection device according to any one of claims 1-8, characterized in that the vision camera (31) and two laser gauges (32) are arranged side by side at intervals along the first direction, and the vision camera (31) is located between two laser gauges (32);

when the feeding area where two objects to be detected (100) are clamped and positioned is stopped in the detection area, the two objects to be detected (100) are arranged at intervals side by side along the first direction, and the interval is equal to the interval of the two laser measuring devices (32).

10. The flatness detection apparatus according to any one of claims 1-8, further comprising:

the central controller (5) is electrically connected with the rotary transfer carrying platform (1), the positioning clamp (2), the acquisition detection mechanism (3) and the positioning mechanism (4) respectively.

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