CN117968530A

CN117968530A - Detection positioning tool for curved thin-wall product and application method thereof

Info

Publication number: CN117968530A
Application number: CN202410206139.5A
Authority: CN
Inventors: 钟群华
Original assignee: Prent Precision Packaging Materials Shanghai Co ltd
Current assignee: Prent Precision Packaging Materials Shanghai Co ltd
Priority date: 2024-02-26
Filing date: 2024-02-26
Publication date: 2024-05-03

Abstract

The invention relates to the technical field of detection and discloses a detection and positioning tool for a curved thin-wall product and a using method thereof. The invention relates to a detection positioning tool, which comprises the following components: the upper fixture is provided with a first inner cavity, a first profiling surface, a guide column and a first air suction hole, the outer side of the first profiling surface is provided with a flange to form a positioning clamping groove, the first profiling surface is provided with a first channel, the lower fixture is provided with a second inner cavity, a second profiling surface, a guide hole and a second air suction hole, and the extension size of the product is larger than that of the second profiling surface. When the detection positioning tool is used, the upper curved surface of the product is attached to the first profiling surface, so that the product is positioned and fixed on the upper tool; and then the upper jig is assembled on the lower jig, so that the product is transferred and fixed on the lower jig, the lower jig with the product is positioned and fixed on the lower jig, the lower jig with the product is placed on a machine table, and the quick positioning and fixing of the product on the machine table are completed, so that the product can be detected.

Description

Detection positioning tool for curved thin-wall product and application method thereof

Technical Field

The embodiment of the invention relates to the technical field of detection, in particular to a detection positioning tool for a curved thin-wall product and a use method thereof.

Background

After the product is processed, the overall dimension of the product is generally required to be detected, and defective products are prevented from flowing out.

During detection, the product is placed on a machine of the image detection equipment, the peripheral edge of the product is in a suspended state, and then the image detection equipment automatically detects the product.

The inventor of the present application found that, for irregular curved thin-wall products, the products cannot be fixed on a machine smoothly at present, and particularly cannot be positioned on the machine quickly. How to quickly fix the irregular curved thin-wall type product on the detection machine is a problem to be solved by technicians in the industry.

Disclosure of Invention

The invention aims to provide a detection positioning tool for a curved thin-wall product and a use method thereof, so that the product is rapidly positioned and fixed, and the problems in the background technology are solved.

The embodiment of the invention provides a detection positioning tool for a curved thin-wall product, which comprises the following components: an upper jig and a lower jig;

the upper jig is provided with a first inner cavity, a first profiling surface and a guide post;

the first profiling surface is outwards convex and is similar to an upper curved surface of a product, a flange is arranged on the outer side of the first profiling surface of the upper jig, and a positioning clamping groove is formed between the flange and the first profiling surface;

The first profiling surface is densely provided with first channels communicated with the first inner cavity, and the side wall of the upper jig is provided with first air pumping holes communicated with the first inner cavity;

the lower jig is provided with a second inner cavity, a second profiling surface and a guide hole;

The second profiling surface is concave and is similar to the lower curved surface of the product, and the extension size of the product is larger than that of the second profiling surface;

The second profiling surface is densely provided with second channels communicated with the second inner cavity, and the side wall of the lower jig is provided with second air pumping holes communicated with the second inner cavity;

the first air suction hole and the second air suction hole are respectively used for being connected with a vacuum suction mechanism;

the first profiling surface is used for placing an upper curved surface of a product, the edge of the product is embedded into the positioning clamping groove, the lower jig is used for being attached to the upper jig, the product is transferred and fixed onto the second profiling surface, and the guide hole is used for being embedded by the guide post.

According to the detection positioning tool for the curved thin-wall product, the upper tool and the lower tool are arranged, the upper tool is provided with the first inner cavity, the first profiling surface and the guide post, the first profiling surface is similar to the upper curved surface of the product, the flange is arranged on the outer side of the first profiling surface, the flange and the first profiling surface form a positioning clamping groove, the first profiling surface is provided with the first channel communicated with the first inner cavity, the upper tool is provided with the first air suction hole communicated with the first inner cavity, the lower tool is provided with the second inner cavity, the second profiling surface and the guide hole, the second profiling surface is similar to the lower curved surface of the product, the extension size of the product is larger than the extension size of the second profiling surface, the second profiling surface is provided with the second channel communicated with the second inner cavity, and the side wall of the lower tool is provided with the second air suction hole communicated with the second inner cavity. When the detection positioning tool for the curved thin-wall product is used, the upper curved surface of the product is attached to the first profiling surface of the upper jig, so that the product is accurately positioned on the upper jig, and then the vacuumizing mechanism vacuumizes the upper jig, so that the product is adsorbed and fixed on the upper jig; and then the upper jig is assembled on the lower jig, the lower curved surface of the product is attached to the second profiling surface of the lower jig, the lower jig is vacuumized, the product is accurately fixed on the lower jig, the peripheral edge of the product protrudes out of the peripheral edge of the second profiling surface of the lower jig, the lower jig with the product is placed on a detection machine, the quick positioning and fixing of the product on the machine are completed, and the detection equipment can detect the product.

In one possible scheme, when the guide post is propped against the lower jig, a gap is reserved between the first profiling surface and the second profiling surface, and the gap corresponds to the thickness of the product.

In one possible approach, the product has an epitaxial dimension greater than the second contoured surface by 2mm.

In one possible embodiment, the first and second air suction holes are each provided with a connection joint.

In one possible solution, the upper fixture includes: an upper base and an upper cover plate;

the top surface of the upper base is provided with a groove, the upper cover plate covers the upper base, and the groove of the upper base is used for forming the first inner cavity.

In one possible solution, the lower fixture includes: a lower base and a lower bottom plate;

The top surface of lower bottom plate is equipped with the recess, lower base lid closes on the lower bottom plate, the recess of lower bottom plate is used for forming on the second inner chamber.

In one possible scheme, a positioning hole is formed in the bottom of the lower bottom plate and used for inserting a positioning pin of the machine.

The embodiment of the invention also provides a use method of the detection positioning tool for the curved thin-wall product, which comprises the following steps:

S1, attaching an upper curved surface of a product to a first profiling surface of an upper jig, and embedding the edge of the product into a positioning clamping groove of the upper jig to position the product on the upper jig;

S2, vacuumizing the first inner cavity of the upper jig by a vacuumizing mechanism to enable the product to be adsorbed on the upper jig;

S3, inserting a guide post of the upper jig into a guide hole of the lower jig, assembling the upper jig on the lower jig, and enabling a lower curved surface of a product to be attached to a second profiling surface of the lower jig;

s4, vacuumizing the second inner cavity of the lower jig by using a vacuumizing mechanism to enable the product to be adsorbed on the lower jig;

S5, closing the vacuumizing mechanism of the upper jig, and removing the upper jig from the lower jig;

s6, positioning the lower jig on a detection machine, and detecting the product through detection equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic front view of a product of the present invention;

FIG. 2 is a schematic perspective view of the product of the present invention;

fig. 3 is a schematic perspective view of a detection positioning tool for curved thin-wall products in the first embodiment of the invention;

Fig. 4 is a schematic front view of a detection positioning tool according to a first embodiment of the present invention;

FIG. 5 is a schematic diagram of an upper fixture according to a first embodiment of the present invention;

FIG. 6 is a schematic view of an upper base in accordance with a first embodiment of the present invention;

FIG. 7 is a schematic view of a lower base according to a first embodiment of the present invention;

FIG. 8 is a schematic view of a lower plate according to a first embodiment of the present invention;

FIG. 9 is a schematic diagram illustrating a first usage state of the detecting and positioning tool according to the second embodiment of the present invention;

FIG. 10 is a schematic diagram illustrating a second usage state of the detecting and positioning tool according to the second embodiment of the present invention;

fig. 11 is a schematic diagram of a third use state of the detecting and positioning tool in the second embodiment of the present invention.

Reference numerals in the drawings:

1. An upper jig; 101. an upper base; 102. an upper cover plate; 11. a first lumen; 12. a first contoured surface; 13. a guide post; 14. a flange; 15. positioning clamping grooves; 16. a first air extraction hole; 2. a lower jig; 201. a lower base; 202. a lower base plate; 21. a second lumen; 22. a second contoured surface; 23. a guide hole; 24. a second air-extracting hole; 100. a product; 110. an upper curved surface; 120. and a lower curved surface.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; either directly, or indirectly, through intermediaries, may be in communication with each other, or may be in interaction with each other, unless explicitly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The technical scheme of the invention is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

As described in the background of the application, during product detection, a product is placed on a machine of an image detection device, the peripheral edge of the product is in a suspended state, and then the image detection device automatically detects the product.

In order to solve the above problems, the present inventors have proposed the technical solution of the present application, and specific embodiments are as follows:

Example 1

Fig. 1 is a schematic front view of a product in the present invention, fig. 2 is a schematic perspective view of a product in the present invention, fig. 3 is a schematic perspective view of a tool for detecting and positioning a curved thin-walled product in the first embodiment of the present invention, fig. 4 is a schematic front view of a tool for detecting and positioning in the first embodiment of the present invention, fig. 5 is a schematic diagram of an upper tool in the first embodiment of the present invention, fig. 6 is a schematic diagram of an upper base in the first embodiment of the present invention, fig. 7 is a schematic diagram of a lower base in the first embodiment of the present invention, and fig. 8 is a schematic diagram of a lower base in the first embodiment of the present invention.

As shown in fig. 1 and 2, the product 100 of the present invention is an irregularly curved thin-walled product, and the product 100 has an upper curved surface (top surface) 110 that is concave and a lower curved surface (bottom surface) 120 that is convex.

As shown in fig. 3 to 8, the detecting and positioning tool for a curved thin-wall product of this embodiment includes: an upper jig 1 and a lower jig 2.

The inside of going up tool 1 is equipped with first inner chamber 11, and one side (top surface) of going up tool 1 is equipped with first profile modeling face 12, and go up tool 1 is equipped with guide post 13 in the both sides department of first profile modeling face 12.

The first profiling surface 12 of the upper jig 1 is outwardly convex, similar to the upper curved surface (top surface) 110 of the product 100. The upper jig 1 is provided with a flange 14 at the outer side of the periphery of the first profiling surface 12, and a positioning clamping groove 15 is formed at the joint of the flange 14 and the first profiling surface 12.

The upper jig 1 is densely provided with a plurality of tiny first channels (not shown in the figure) on the first profiling surface 12, the first channels are respectively communicated with the first inner cavity 11 of the upper jig 1, a first air pumping hole 16 is arranged on one side wall of the upper jig 1, the first air pumping hole 16 is communicated with the first inner cavity 11 of the upper jig 1, and the first air pumping hole 16 is used for being connected with a vacuumizing mechanism.

The inside of lower tool 2 has second inner chamber 21, and the top surface of lower tool 2 is equipped with second profile modeling face 22, and lower tool 2 is equipped with guiding hole 23 in the both sides of second profile modeling face 22.

The second profiling surface 22 of the lower jig 2 is concave inwards, which is similar to the lower curved surface (bottom surface) 120 of the product 100, and the peripheral extension dimension of the second profiling surface 22 of the lower jig 2 is smaller than the peripheral extension dimension of the product 100, i.e. the external dimension of the product is larger than the external dimension of the second profiling surface of the lower jig, and when the product is placed on the lower jig, the periphery of the product protrudes out of the second profiling surface of the lower jig.

The lower jig 2 is densely provided with a plurality of tiny second channels (not shown in the figure) on the second profiling surface 22, the second channels are respectively communicated with the second inner cavity 21 of the lower jig 2, a second air pumping hole 24 is arranged on one side wall of the lower jig 2, the second air pumping hole 24 is communicated with the second inner cavity 21 of the lower jig 2, and the second air pumping hole 24 is used for being connected with a vacuumizing mechanism.

In this embodiment, when detecting the location frock and using, the product openly face down back-off is on last tool, laminates the last curved surface of product on first profile modeling face, and the peripheral edge embedding of product is in the location draw-in groove of last tool, makes the product accurate location on last tool, then the evacuation mechanism is to the first inner chamber evacuation of last tool, makes the product adsorb and fixes on last tool. And then the upper jig is buckled and assembled on the lower jig, and the guide post of the upper jig is inserted into the guide hole of the lower jig, so that the upper jig is precisely assembled on the lower jig, and the lower curved surface of the product is attached in the second profiling surface of the lower jig. And vacuumizing the second inner cavity of the lower jig, and closing the vacuumizing mechanism of the upper jig, so that the product is transferred and fixed onto the lower jig. The extension size of the second profiling surface of the lower jig is smaller than that of the product, so that the peripheral edge of the product protrudes out of the peripheral edge of the second profiling surface of the lower jig, the lower jig with the product is positioned and placed on the detection machine, namely, the positioning and fixing of the product on the detection machine are finished, and the detection equipment can detect the product.

Through the above, it is difficult to find that, the detecting and positioning tool for the curved thin-wall product of this embodiment is equipped with first inner chamber, first profile modeling face and guide post through setting up upper jig and lower tool, upper jig, first profile modeling face is similar with the upper curved surface of product, be equipped with flange in the outside of first profile modeling face, flange forms the positioning clamping groove with first profile modeling face, first profile modeling face is equipped with the first passageway that is linked together with first inner chamber, upper jig is equipped with the first gas vent that is linked together with first inner chamber, lower jig is equipped with second inner chamber, second profile modeling face and guide hole, second profile modeling face is similar with the lower curved surface of product, the epitaxial size of product is greater than the epitaxial size of second profile modeling face, the second profile modeling face is equipped with the second passageway that is linked together with the second inner chamber, the lateral wall of lower tool is equipped with the second gas vent that is linked together with the second inner chamber. When the detection positioning tool for the curved thin-wall product is used, an upper curved surface of the product is attached to a first profiling surface of an upper jig, so that the product is accurately positioned on the upper jig, and then the upper jig is vacuumized by a vacuumizing mechanism, so that the product is adsorbed and fixed on the upper jig; and then the upper jig is assembled on the lower jig, the lower curved surface of the product is attached to the second profiling surface of the lower jig, the lower jig is vacuumized, the product is accurately fixed on the lower jig, the peripheral edge of the product protrudes out of the peripheral edge of the second profiling surface of the lower jig, the lower jig with the product is placed on a detection machine, the quick positioning and fixing of the product on the machine are completed, and the detection equipment can detect the product.

Optionally, as shown in fig. 4, in the detection positioning tool for the curved thin-wall product in this embodiment, the guide post 13 of the upper tool 1 is inserted into the guide hole 23 of the lower tool 2, so that the upper tool 1 is accurately positioned on the lower tool 2. When the guide post 13 of the upper jig 1 abuts against the lower jig 2, a gap is reserved between the first profiling surface 12 of the upper jig 1 and the second profiling surface 22 of the lower jig 2, the gap (distance) between the first profiling surface 12 and the second profiling surface 22 corresponds to the thickness of the product 100, so that the product 100 is completely and accurately placed between the first profiling surface 12 of the upper jig 1 and the second profiling surface 22 of the lower jig 2, and is accurately transferred onto the lower jig 2 from the upper jig 1, and the product 100 cannot be extruded and deformed.

Optionally, in the detecting and positioning tool for the curved thin-walled product in this embodiment, the extension dimension of the second profiling surface 22 of the lower tool 2 is smaller than the extension dimension of the product 100. The product 100 is transferred to the lower jig 2, and the peripheral edge of the product 100 protrudes from the peripheral edge of the second profiling surface 22 of the lower jig 2 by about 2mm, namely, the peripheral edge of the product 100 is suspended by about 2mm, so that the product 100 can be detected, and the lower jig 2 can better support the product 100, and the product 100 is prevented from deforming.

Optionally, in the detection positioning tool for the curved thin-wall product in this embodiment, the first air suction hole 16 of the upper tool 1 and the second air suction hole 24 of the lower tool 2 are respectively provided with a connecting joint (not shown in the figure), so that the upper tool 1, the lower tool 2 and the vacuumizing mechanism are conveniently and quickly connected.

Further, in the detection positioning tool for curved thin-wall products in this embodiment, the upper tool 1 includes: an upper base 101 and an upper cover 102.

The top surface of the upper base 101 is provided with a groove, and the upper cover plate 102 is fixedly covered on the top surface of the upper base 101, and the groove of the upper base 101 forms the first inner cavity 11 of the upper jig 1.

The bottom surface of the upper base 101 forms a first profiling surface 12 of the upper jig 1.

Further, in this embodiment, a detection positioning tool for a curved thin-wall product, the lower tool 2 includes: a lower base 201 and a lower bottom plate 202.

The top surface of the lower base plate 202 is provided with a groove, and the lower base 201 is fixed on the top surface of the lower base plate 202 in a covering manner, and the groove of the lower base plate 202 is formed into the second inner cavity 21 of the lower jig 2.

The top surface of the lower base 201 is formed as the second profiling surface 22 of the lower jig 2.

Further, in the detection positioning tool for the curved thin-wall product in this embodiment, two positioning holes are provided at the bottom of the lower base plate 202. The locating hole of lower plate 202 corresponds with the locating pin on the detection board, and when lower tool 2 is placed on the board, the locating pin of board inserts in the locating hole of lower plate, makes lower tool 2 and product 100 quick location on the detection board.

Example two

Fig. 9 is a schematic diagram of a first usage state of the detecting and positioning tool in the second embodiment of the present invention, fig. 10 is a schematic diagram of a second usage state of the detecting and positioning tool in the second embodiment of the present invention, and fig. 11 is a schematic diagram of a third usage state of the detecting and positioning tool in the second embodiment of the present invention.

The invention also provides a use method of the detection positioning tool for the curved thin-wall product.

The application method of the detection and positioning tool for the curved thin-wall product comprises the following steps:

s1, reversely buckling an upper curved surface of the product on a first profiling surface of the upper jig, so that the product is positioned on the upper jig.

Specifically, the product is placed on the upper jig, so that the upper curved surface (top surface) of the product is completely attached to the first profiling surface of the upper jig, and the peripheral edge of the product is embedded into a positioning clamping groove between the flange of the upper jig and the first profiling surface, so that the product is accurately positioned on the upper jig.

S2, vacuumizing the upper jig by the vacuumizing mechanism to enable the product to be adsorbed on the upper jig.

Specifically, the vacuum-pumping mechanism connected with the upper jig is started, the first inner cavity of the upper jig is vacuumized, and the product is firmly adsorbed and fixed on the upper jig, so that the state shown in fig. 9 is obtained.

The description is as follows: although the product is positioned and fixed on the upper jig at this time, since the peripheral edge of the product is wrapped by the flange edge of the upper jig, the product cannot be inspected in this state.

S3, the guide post of the upper jig is inserted into the guide hole of the lower jig, so that the upper jig is assembled on the lower jig.

Specifically, the first profiling surface of the upper jig is opposite to the second profiling surface of the lower jig, the guide post of the upper jig is inserted into the guide hole of the lower jig, the upper jig is assembled and buckled on the lower jig, and at this time, the lower curved surface (bottom surface) of the product is completely attached to the second profiling surface of the lower jig, so that the state shown in fig. 10 is obtained.

Because the assembly gap which is the same as the thickness of the product is reserved between the first profiling surface of the upper jig and the second profiling surface of the lower jig, the product is accurately clamped between the upper jig and the lower jig, the accurate positioning of the product on the lower jig is realized, and the product cannot deform.

S4, vacuumizing the lower jig by the vacuumizing mechanism to enable the product to be adsorbed on the lower jig.

Specifically, a vacuum-pumping mechanism connected with the lower jig is started to vacuumize the second inner cavity of the lower jig, so that the product is adsorbed and fixed on the lower jig.

S5, closing the vacuumizing mechanism connected with the upper jig, and removing the upper jig from the lower jig.

Specifically, the vacuumizing mechanism of the upper jig is closed, the upper jig is removed from the lower jig (product), and the product is transferred and fixed onto the lower jig and is accurately positioned on the lower jig. Because the extension size of the second profiling surface of the lower jig is smaller than 2mm of the extension size of the product, the peripheral edge of the product protrudes from the peripheral edge of the second profiling surface of the lower jig by about 2mm, namely, the peripheral edge of the product is in a suspended state, and the state shown in fig. 11 is obtained.

S6, placing the lower jig on a detection machine for detection.

Specifically, the lower jig with the product is placed on the detection machine, so that the positioning pin of the detection machine is inserted into the positioning hole at the bottom of the lower jig, positioning and fixing of the product on the detection machine are completed, and then the image detection equipment can detect the product.

The detection positioning tool is developed for the thin-wall product with the irregular curved surface, the first profiling surface of the upper tool is similar to the upper curved surface of the product, and the second profiling surface of the lower tool is similar to the lower curved surface of the product. The product is accurately positioned and fixed on the upper jig through the double positioning structure of the first profiling surface and the positioning clamping groove of the upper jig; the product is transferred and accurately fixed on the lower jig through the positioning mechanism of the upper jig and the lower jig, and the peripheral edge of the product protrudes out of the peripheral edge of the second profiling surface of the lower jig, so that the detection condition of the product is met; and finally, positioning and placing the lower jig on a detection machine, namely, positioning and fixing the irregular curved surface thin-wall type product on the detection machine, and detecting the product through detection equipment. The profiling surfaces of the upper jig and the lower jig can be applied to detection of various irregular curved thin-wall products according to the curved surface design of the products.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact between the first feature and the second feature, or an indirect contact between the first feature and the second feature through an intervening medium.

Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is at a lower level than the second feature.

In the description of the present specification, reference to the description of the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A detect location frock for curved surface thin wall product, its characterized in that includes: an upper jig and a lower jig;

2. The detection and positioning tool for curved thin-wall products according to claim 1, wherein when the guide post abuts against the lower tool, a gap is reserved between the first profiling surface and the second profiling surface, and the gap corresponds to the thickness of the products.

3. The tooling for inspecting and positioning a curved thin-walled product of claim 1, wherein the product has an epitaxial dimension greater than the second contoured surface by 2mm.

4. The detection and positioning tool for curved thin-wall products according to claim 1, wherein the first air suction hole and the second air suction hole are both provided with connecting joints.

5. The inspection positioning tool for curved thin-walled products of claim 1, wherein the upper tool comprises: an upper base and an upper cover plate;

6. The tooling for detecting and positioning a curved thin-walled product according to claim 1, wherein the lower tooling comprises: a lower base and a lower bottom plate;

7. The tool for detecting and positioning curved thin-wall products according to claim 6, wherein a positioning hole is formed in the bottom of the lower base plate for inserting a positioning pin of the machine.

8. The method of using the tool for detecting and positioning curved thin-wall products according to claim 1, comprising the steps of: