Positioning device and mechanical equipment

Abstract

The embodiment of the utility model provides a positioning device and mechanical equipment. The positioning device comprises a curved surface profiling part, the curved surface profiling part comprises a body and a curved surface profiling workpiece, the curved surface profiling workpiece is arranged on the body, and the curved surface profiling workpiece is used for bearing a to-be-positioned product; a first channel is formed in the body, the first channel penetrates through the body in the thickness direction of the body, an adsorption component is arranged on the side, close to the curved surface profiling workpiece, of the body, the adsorption component communicates with a first port of the first channel, and the adsorption component is used for adsorbing a to-be-positioned product; the gas circuit adapter plate is arranged on the body, a gas circuit connector is arranged on the gas circuit adapter plate, one end of the gas circuit connector is communicated with a second port of the first channel, and the other end of the gas circuit connector is used for being connected with equipment for providing negative pressure.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of product positioning, and more specifically, relate to a positioning device and mechanical equipment. Background Art

[0002] When using processing equipment (such as various machine tools) to process products, product positioning is an extremely important step in the processing. Only by determining the relative position of the product on the processing equipment can the processing accuracy be guaranteed and the production efficiency be improved.

[0003] However, some products are made of free-form surfaces, which cannot fit the work platform. There must be an irregular gap between the two, so the stability of the product after being fixed cannot be guaranteed. At present, products with free-form surfaces are mainly clamped and positioned by cylinders, which can easily damage the product, and the product is prone to shaking during operation, with low positioning accuracy.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0005] The purpose of this application is to provide a new technical solution for a positioning device and mechanical equipment.

[0006] In a first aspect, the present application provides a positioning device. The positioning device comprises:

[0007] The curved surface profiling part comprises a main body and a curved surface profiling workpiece, wherein the curved surface profiling workpiece is arranged on the main body and is used to carry the product to be positioned;

[0008] A first channel is provided inside the body, and the first channel penetrates the body along the thickness direction of the body. A suction component is provided on a side of the body close to the curved surface profiling workpiece, and the suction component is communicated with a first port of the first channel, and the suction component is used to suction the product to be positioned;

[0009] An air circuit adapter plate is arranged on the main body, and an air circuit connector is arranged on the air circuit adapter plate, one end of the air circuit connector is connected to the second port of the first channel, and the other end of the air circuit connector is used to connect a device that provides negative pressure.

[0010] Optionally, a protrusion is provided on the main body, and the protrusion is located on one side of the curved surface profiling workpiece. The protrusion is provided with a through hole, and the through hole is connected to the first channel. The adsorption component is provided on the side of the protrusion away from the main body.

[0011] Optionally, the curved surface profiling workpiece includes a limiting portion and a first supporting portion;

[0012] Wherein, the first supporting portion is used to support the end surface of the edge of the product to be positioned; and the limiting portion is located on the outer side of the first supporting portion.

[0013] Optionally, the first support portion includes a first section, a second section and a third section, the first section and the third section extend along the width direction of the body, the second section extends along the length direction of the body, one end of the second section is connected to the first section, and the other end of the second section is connected to the third section;

[0014] The adsorption component is disposed on one side of each section of the first supporting portion.

[0015] Optionally, a avoiding portion is provided on the first supporting portion.

[0016] Optionally, a sealing portion is provided between the gas path adapter plate and the curved surface profiling portion.

[0017] Optionally, a second channel is formed in the gas path adapter plate, one end of the second channel is provided with a gas path connector, and the other end of the second channel is connected to the first channel.

[0018] Optionally, a second supporting portion is provided on the main body, and the second supporting portion is located near the curved surface profiling workpiece.

[0019] Optionally, the positioning device further includes a mounting joint, and the mounting joint is arranged on the gas circuit adapter plate.

[0020] Optionally, a gas joint is provided on the mounting joint, and the gas joint is connected to the gas circuit joint.

[0021] In a second aspect, a mechanical device is provided, wherein the mechanical device comprises the positioning device as described in the first aspect.

[0022] According to an embodiment of the present application, a positioning device is provided. The positioning device realizes preliminary positioning of a product through a curved surface profiling workpiece, then introduces negative pressure through an air path adapter plate, and firmly adsorbs the product on the curved surface profiling workpiece through an adsorption component to complete precise positioning.

[0023] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0025] Figure 1 The structure of the positioning device provided in the embodiment of the present application is shown as follows Figure 1 .

[0026] Figure 2 The structure of the positioning device provided in the embodiment of the present application is shown as follows Figure 2 .

[0027] Figure 3 The structure of the positioning device provided in the embodiment of the present application is shown as follows Figure 3 .

[0028] Figure 4 The structure of the positioning device provided in the embodiment of the present application is shown as follows Figure 4 .

[0029] Description of reference numerals:

[0030] 1. curved surface profiling part; 10. body; 11. curved surface profiling workpiece; 110. limiting part; 111. first supporting part; 1110. avoiding part; 1111. first section; 1112. second section; 1113. third section;

[0031] 12. convex portion; 13. adsorption component; 14. second supporting portion;

[0032] 2. Gas circuit adapter plate; 21. Gas circuit connector;

[0033] 3. Install the joint; 31. Gas joint. DETAILED DESCRIPTION

[0034] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0036] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0037] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0038] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] The embodiment of the present application provides a positioning device. The positioning device solves the problem that the positioning device in the prior art is inaccurate and the product is easily damaged. Specifically, in the positioning device provided in the embodiment of the present application, the curved surface profiling workpiece 11 fits perfectly with the product to be positioned, and the product to be positioned is firmly adsorbed by vacuum adsorption, which reduces damage and deformation of the product and improves product positioning accuracy and work efficiency.

[0040] Reference Figure 1-Figure 4 The positioning device includes a curved surface profiling portion 1 and an air path adapter plate 2.

[0041] The curved surface profiling part 1 comprises a main body 10 and a curved surface profiling workpiece 11, wherein the curved surface profiling workpiece 11 is arranged on the main body 10, and the curved surface profiling workpiece 11 is used to carry the product to be positioned;

[0042] A first channel is provided inside the body 10, and the first channel penetrates the body 10 along the thickness direction of the body 10. A suction component 13 is provided on one side of the body 10 close to the curved surface profiling workpiece 11, and the suction component 13 is communicated with a first port of the first channel, and the suction component 13 is used to suction the product to be positioned;

[0043] The gas circuit adapter plate 2 is arranged on the main body 10, and a gas circuit connector 21 is arranged on the gas circuit adapter plate 2. One end of the gas circuit connector 21 is connected to the second port of the first channel, and the other end of the gas circuit connector 21 is used to connect a device that provides negative pressure.

[0044] In an embodiment of the present application, the positioning device includes a curved surface profiling portion 1 and an air path adapter plate 2. The curved surface profiling portion 1 includes a main body 10 and a curved surface profiling workpiece 11. The curved surface profiling workpiece 11 is directly arranged on the main body 10, and the main function of the curved surface profiling workpiece 11 is to carry the product to be positioned. This means that when a certain product needs to be positioned, it can be placed on the curved surface profiling workpiece 11 to achieve preliminary positioning. For example, if the product to be positioned is a frame structure of smart glasses, one surface of the frame of the smart glasses is fitted with the curved surface profiling workpiece 11. The curved surface profiling workpiece 11 is arranged on the main body 10. For example, the main body 10 can be a platform structure. According to the structure of the product to be positioned, the curved surface profiling workpiece 11 can be arranged on the main body 10 by mechanical processing (CNC processing, etc.).

[0045] A first channel is also provided inside the body 10. The first channel serves as an airflow channel. Optionally, one or more first channels are provided inside the body 10. The first channel and the adsorption component 13 are used to firmly fix the product to be positioned on the curved surface profiling workpiece 11 through adsorption force to ensure stable positioning of the product. Considering the balance of the adsorption force of the adsorption component 13 on the product to be positioned and the firmness of the adsorption of the product to be positioned by the adsorption component 13, a plurality of first channels are provided in the curved surface profiling portion 1 according to the shape of the curved surface profiling workpiece 11 and the structure of the product to be positioned. Optionally, the adsorption component 13 is a suction cup.

[0046] The main body 10 is provided with an adsorption component 13 on one side close to the curved surface profiling workpiece 11. The adsorption component 13 is located on one side of the curved surface profiling workpiece 11, and is not located on the curved surface profiling workpiece 11. In this way, when the product to be positioned is placed on the curved surface profiling workpiece 11, the adsorption component 13 will not affect the bonding effect between the product to be positioned and the curved surface profiling workpiece 11. After bonding one surface of the product to be positioned with the curved surface profiling workpiece 11, the product to be positioned is adsorbed by the adsorption component 13, so that the product to be positioned is firmly set on the curved surface profiling workpiece 11.

[0047] The positioning device also includes a gas circuit adapter plate 2, which is arranged on the body 10. Specifically, refer to Figure 2 and Figure 3 The air circuit adapter plate 2 is arranged on the main body 10 and is arranged away from the curved surface profiling workpiece 11. The main function of the air circuit adapter plate 2 is to serve as a transfer medium for the air circuit. An air circuit connector 21 is arranged on the air circuit adapter plate 2. One end of the air circuit connector 21 is connected to the second port of the first channel, and the other end is used to connect a device that provides negative pressure. In this way, when the device that provides negative pressure is started, the negative pressure will be transmitted to the adsorption component 13 through the air circuit connector 21 and the first channel, so that it generates an adsorption force, thereby achieving the fixation of the product to be positioned.

[0048] Therefore, in the embodiment of the present application, the positioning device realizes the preliminary positioning of the product through the curved surface profiling workpiece 11, and then introduces negative pressure through the air path adapter plate 2, and firmly adsorbs the product on the curved surface profiling workpiece 11 through the adsorption component 13 to complete the precise positioning. Such a design not only ensures the accuracy of positioning, but also improves the convenience of operation.

[0049] In one embodiment, referring to Figure 1 , Figure 3 and Figure 4A protrusion 12 is provided on the main body 10, and the protrusion 12 is located on one side of the curved surface profiling workpiece 11. The protrusion 12 is provided with a through hole, and the through hole is connected to the first channel. The adsorption component 13 is provided on the side of the protrusion 12 away from the main body 10.

[0050] In the embodiment of the present application, a protrusion 12 is specially designed on the body 10. The protrusion 12 can be a metal block or a block structure of other materials arranged on the body 10. The number of the protrusions 12 is related to the number of first channels arranged inside the body 10. When one first channel is arranged in the curved surface profiling part 1, one protrusion 12 is designed on the body 10. When multiple first channels are arranged in the curved surface profiling part 1, multiple protrusions 12 are arranged on the body 10, wherein the design position of the protrusion 12 corresponds to the arrangement position of the first channels one by one.

[0051] The raised portion 12 is located on one side of the curved surface profiling workpiece 11 , and its function is not only to enhance the structural strength of the body 10 , but also to facilitate the subsequent adsorption operation.

[0052] Specifically, a through hole is provided inside the protrusion 12. The through hole is connected to the first channel described previously. Specifically, the through hole is directly connected to the first port of the first channel. Such a design allows the negative pressure to be smoothly transferred from the first channel to the through hole, providing the necessary conditions for the subsequent adsorption operation.

[0053] An adsorption component 13 is provided on the side of the protrusion 12 facing away from the body 10, that is, on the outer surface of the protrusion 12. Since the through hole is connected to the first channel, when the external negative pressure device is started, the negative pressure will pass through the first channel and the through hole, and finally act on the adsorption component 13. In this way, the adsorption component 13 can generate sufficient adsorption force to tightly adsorb the product to be positioned on the curved surface profiling workpiece 11.

[0054] In this embodiment, through the cooperation between the protrusion 12 and the through hole, the negative pressure can act on the adsorption component 13 more directly and effectively, thereby achieving rapid and stable positioning of the product.

[0055] Optionally, when a plurality of protrusions 12 are provided on the main body 10, since an adsorption component 13 is provided on the side of the protrusion 12 facing away from the main body 10, the adsorption component 13 is used to adsorb the product to be positioned, and the height of the plurality of protrusions 12 and the inclination direction and inclination angle of the protrusion 12 can be designed differently according to the different structures of the product to be positioned, so as to ensure that the adsorption component 13 can firmly adsorb the product to be positioned on the curved contour workpiece 11.

[0056] In one embodiment, the curved surface profiling workpiece 11 includes a limiting portion 110 and a first supporting portion 111;

[0057] The first supporting portion 111 is used to support the end surface of the edge of the product to be positioned; and the limiting portion 110 is located outside the first supporting portion 111 .

[0058] In this embodiment, the main function of the first support portion 111 is to support the end surface of the edge of the product to be positioned. This means that when the product to be positioned is placed on the curved profiling workpiece 11, the end surface of its edge will contact the first support portion 111 and be stably supported by it. This design helps prevent the product from moving or tilting during processing or transportation, thereby ensuring the accuracy and stability of the product position.

[0059] In addition, a limiting portion 110 is provided on the outer side of the first supporting portion 111. Figure 1 A limiting portion 110 is provided in the connection area between the first supporting portion 111 and the body 10 , and the limiting portion 110 and the protruding portion 12 are located on different sides of the first supporting portion 111 , so that the overall layout of the curved surface profiling portion 1 is more compact and reasonable.

[0060] Specifically, the limiting part 110 is carefully arranged on the edge side of the first support part 111. The main function of the limiting part 110 is to limit the movement range of the product to be positioned on the first support part 111 to ensure that the product can be accurately placed in the predetermined position. When the product is placed on the first support part 111, the limiting part 110 will play a blocking and guiding role to prevent the product from sliding out or deviating from the correct position. The design of the limiting part 110 takes into account the shape and size of the product to ensure that it can function effectively.

[0061] The shape, size and design position of the limiting portion 110 can be adjusted according to specific needs to meet the positioning requirements of different products.

[0062] In one embodiment, referring to Figure 1 The first support portion 111 includes a first section 1111, a second section 1112 and a third section 1113. The first section 1111 and the third section 1113 extend along the width direction of the body 10, respectively. The second section 1112 extends along the length direction of the body 10. One end of the second section 1112 is connected to the first section 1111, and the other end of the second section is connected to the third section 1113.

[0063] The adsorption component 13 is disposed on one side of each section of the first supporting portion 111 .

[0064] In this embodiment, the shape and layout of the first support portion 111 are described in more detail. The first support portion 111 is subdivided into three sections, namely the first section 1111, the second section 1112 and the third section 1113. Such a segmented design not only enables the first support portion 111 to better adapt to complex curved shapes, but also improves the flexibility and precision of processing.

[0065] Specifically, the first section 1111 and the third section 1113 extend along the width direction of the body 10, and the second section 1112 extends along the length direction of the body 10. It connects the first section 1111 and the third section 1113 to form a complete curved surface profiling structure.

[0066] Among them, an adsorption component 13 is provided on one side of each section of the first support part 111. Specifically, a protrusion 12 is provided on one side of each section of the first support part 111. With this design, when the product to be positioned is attached to the first support part 111, the product to be positioned corresponding to each section can be adsorbed. That is, when the product to be positioned is placed on the first support part 111, no matter which section it contacts, it can be stably adsorbed through the corresponding protrusion 12 and the adsorption component 13.

[0067] In this embodiment, the segmented and protruded design not only improves the adaptability and flexibility of the positioning device, but also makes the product positioning more accurate and stable. Whether it is a large or small product, the most suitable positioning position and adsorption method can be found through appropriate adjustments.

[0068] In one embodiment, referring to Figure 1 The first supporting portion 111 is provided with an avoidance portion 1110 .

[0069] In this embodiment, the first support portion 111 is further optimized, in particular, an avoidance portion 1110 is provided thereon. This improvement not only takes into account the accuracy and stability of product positioning, but also fully considers the characteristics and structure of the product itself.

[0070] The design of the avoidance portion 1110 is mainly to solve the protrusions or special structures that may exist on the product to be positioned. In some cases, some parts of the product may exceed the size of its main part (such as the nose bridge structure of smart glasses). If the first support portion 111 does not have a corresponding avoidance design, these protrusions may interfere with the workpiece, resulting in inaccurate positioning or failure to position. By providing the avoidance portion 1110, the avoidance portion 1110 can provide sufficient space for these protrusions or special structures to avoid them from interfering with the first support portion 111. In this way, the product to be positioned can be placed on the first support portion 111 more smoothly and accurately to achieve precise positioning.

[0071] The position and shape of the avoidance portion 1110 can be customized according to the actual structure of the product. For example, if there is a large protrusion on a certain part of the product, we can set a groove or notch at the corresponding position on the first support portion 111 to accommodate the protrusion. In this way, the product can be completely attached to the curved surface profiling workpiece 11 to achieve stable positioning.

[0072] In one embodiment, a sealing portion is provided between the gas path adapter plate 2 and the curved surface profiling portion 1 .

[0073] In this embodiment, a sealing part is specially provided between the gas circuit adapter plate 2 and the curved surface profiling part 1. This design is crucial to ensure the performance and stability of the entire positioning device. The main function of the sealing part is to ensure that the connection between the gas circuit adapter plate 2 and the curved surface profiling part 1 has good sealing performance.

[0074] Since the positioning device needs to use negative pressure to adsorb the product to be positioned during operation, any leakage may cause the negative pressure to be unable to be effectively transmitted, thereby affecting the adsorption effect. By providing a sealing portion, gas leakage at the connection can be effectively prevented, ensuring that the negative pressure can act on the adsorption component 13 stably and efficiently.

[0075] Optionally, in order to ensure that the air path is smoother, a main air port can be provided at the bottom of the curved profiling portion 1 (the side connected to the air path adapter plate 2), and the main air port is connected to the first channel mentioned previously and the second channel described later. An O-ring can be provided between the main air port and the air path adapter plate 2 to improve the sealing between the air path adapter plate 2 and the curved profiling portion 1.

[0076] In one embodiment, a second channel is formed in the gas path adapter plate 2 , a gas path connector 21 is provided at one end of the second channel, and the other end of the second channel is communicated with the first channel.

[0077] In this embodiment, a second channel is formed inside the gas path adapter plate 2. The existence of the second channel is crucial for achieving negative pressure transmission and stable adsorption of the product to be positioned.

[0078] Specifically, an air circuit connector 21 is provided at one end of the second channel. The main function of this air circuit connector 21 is to be connected to an external device that provides negative pressure. Through the air circuit connector 21, the external device can generate a stable and continuous negative pressure to provide the necessary power for the adsorption operation. The other end of the second channel is connected to the first channel on the curved surface profiling portion 1 described previously. Such a design allows the negative pressure to smoothly pass from the air circuit connector 21 through the second channel, and then to the first channel, and finally act on the adsorption component 13. This channel connection method not only ensures the efficiency and stability of the negative pressure transmission, but also makes the structure of the entire positioning device more compact and reasonable.

[0079] In one embodiment, referring to Figure 1 and Figure 4 A second supporting portion 14 is provided on the main body 10 , and the second supporting portion 14 is located near the curved surface profiling workpiece 11 .

[0080] In this embodiment, since the second support portion 14 is located near the curved surface profiling workpiece 11, the second support portion 14 can, to a certain extent, play a role in fixing and supporting the product to be positioned placed on the curved surface profiling workpiece 11. For example, the second support portion 14 can be located on one side of the first support portion 111, or the second support portion 14 can be located on one side of the limiting portion 110, wherein the setting position of the second support portion 14 can be determined according to the specific structure of the product to be positioned. Figure 1 and Figure 4 The second supporting portion 14 is located on a side of the first supporting portion 111 away from the limiting portion 110 .

[0081] In this embodiment, the second support portion 14 is further provided on the body 10, which makes the first support portion 111 more stable during operation, reduces positioning errors caused by vibration or movement, and thus improves positioning accuracy. Figure 1 The second supporting portion 14 and the raised portion 12 are located on the same side of the first supporting portion 111 , and the second supporting portion 14 is arranged farther away from the curved surface profiling workpiece 11 than the raised portion 12 .

[0082] In one embodiment, referring to Figure 2 and Figure 3 The positioning device also includes a mounting joint 3, and the mounting joint 3 is arranged on the gas circuit adapter plate 2.

[0083] In this embodiment, the mounting joint 3 is a key component connecting the gas circuit adapter plate 2 and the external mounting structure, and plays a bridge role. The design of the mounting structure allows the positioning device to be conveniently fixed on a workbench or other fixed structure, thereby ensuring the stability and reliability of the positioning device during operation. In addition, the mounting joint 3 and the positioning device can be connected in a detachable manner, which is convenient for replacing the positioning device.

[0084] In one embodiment, a gas joint 31 is provided on the mounting joint 3 , and the gas joint 31 is communicated with the gas circuit joint 21 .

[0085] In this embodiment, the gas connector 31 provided on the mounting connector 3 makes the connection between the positioning device and the external gas source more convenient and direct. The operator only needs to connect the gas pipe of the external gas source to the gas connector 31 to achieve the transmission of negative pressure, which not only simplifies the operation process but also improves the work efficiency.

[0086] In addition, the connection design between the gas joint 31 and the gas circuit joint 21 ensures the continuity and stability of the negative pressure transmission. Since the gas joint 31 and the gas circuit joint 21 are directly connected, the negative pressure can pass through the gas joint 31 and the gas circuit joint 21 from the external gas source without hindrance, and finally reach the adsorption component 13, thereby achieving stable adsorption of the product to be positioned. This design effectively avoids the problem of negative pressure leakage caused by improper or loose connection, and improves the reliability and stability of the positioning device.

[0087] The embodiment of the present application further provides a mechanical device, wherein the mechanical device comprises the positioning device as described above.

[0088] In this embodiment, the mechanical equipment includes the positioning device described above, which can greatly improve the automation and work efficiency of the mechanical equipment. Whether it is product assembly on a production line or workpiece positioning during precision machining, this positioning device can perform excellently.

[0089] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0090] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A positioning device, characterized in that: include: The curved surface profiling part (1) comprises a main body (10) and a curved surface profiling workpiece (11), wherein the curved surface profiling workpiece (11) is arranged on the main body (10), and the curved surface profiling workpiece (11) is used to carry a product to be positioned; A first channel is provided inside the body (10), and the first channel penetrates the body (10) along the thickness direction of the body (10); a suction component (13) is provided on a side of the body (10) close to the curved surface profiling workpiece (11), and the suction component (13) is communicated with a first port of the first channel, and the suction component (13) is used to suction the product to be positioned; An air circuit adapter plate (2), the air circuit adapter plate (2) being arranged on the main body (10), the air circuit adapter plate (2) being provided with an air circuit connector (21), one end of the air circuit connector (21) being in communication with the second port of the first channel, and the other end of the air circuit connector (21) being used for connecting a device for providing negative pressure.

2. The positioning device according to claim 1, characterized in that: The main body (10) is provided with a raised portion (12), and the raised portion (12) is located on one side of the curved surface profiling workpiece (11), the raised portion (12) is provided with a through hole, the through hole is connected to the first channel, and the adsorption component (13) is provided on the side of the raised portion (12) facing away from the main body (10).

3. The positioning device according to claim 1, characterized in that: The curved surface profiling workpiece (11) comprises a limiting portion (110) and a first supporting portion (111); Wherein, the first supporting portion (111) is used to support the end surface of the edge of the product to be positioned; and the limiting portion (110) is located outside the first supporting portion (111).

4. The positioning device according to claim 3, characterized in that: The first supporting portion (111) comprises a first section (1111), a second section (1112) and a third section (1113); the first section (1111) and the third section (1113) extend along the width direction of the body (10), the second section (1112) extends along the length direction of the body (10), one end of the second section (1112) is connected to the first section (1111), and the other end of the second section (1112) is connected to the third section (1113); The adsorption component (13) is provided on one side of each section of the first supporting portion (111).

5. The positioning device according to claim 3, characterized in that: The first supporting portion (111) is provided with an avoidance portion (1110).

6. The positioning device according to claim 1, characterized in that: A sealing portion is provided between the gas path adapter plate (2) and the curved surface profiling portion (1).

7. The positioning device according to claim 1, characterized in that: A second channel is formed in the gas path adapter plate (2), one end of the second channel is provided with a gas path connector (21), and the other end of the second channel is in communication with the first channel.

8. The positioning device according to claim 1, characterized in that: The body (10) is provided with a second supporting portion (14), and the second supporting portion (14) is located near the curved surface profiling workpiece (11).

9. The positioning device according to claim 1, characterized in that: The positioning device also includes a mounting joint (3), and the mounting joint (3) is arranged on the gas path adapter plate (2).

10. The positioning device according to claim 9, characterized in that: The installation joint (3) is provided with a gas joint (31), and the gas joint (31) is communicated with the gas path joint (21).

11. A mechanical device, characterized in that: The mechanical device comprises a positioning device as claimed in any one of claims 1-10.

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