CN214923611U - Positioning tool and detection equipment - Google Patents

Abstract

The utility model discloses a positioning tool and a detection device, wherein the positioning tool comprises a tool body, a first positioning block, a second positioning block and a supporting convex part protruding out of the upper surface of the tool body; during the use, first locating piece, second locating piece and support convex part can retrain the work piece of being positioned jointly, in order to retrain the work piece of being positioned except along the degree of freedom that the first surface of perpendicular to removed to the direction of keeping away from the frock body, support convex part, first locating piece and second locating piece, the three encloses the degree of freedom of retraining the work piece of being positioned, properly adjust separately the position and enable the surfacing of the work piece of being positioned, can avoid the deformation of the work piece of being positioned when vacuum adsorption, make the work piece of being positioned fine absorption at the frock body, and then guarantee the accuracy nature of follow-up detection position, can improve testing result accuracy and uniformity. And the contact area between the supported surface of the positioned workpiece and the positioning tool is small, so that the abrasion of the supported surface can be reduced.

Description

Positioning tool and detection equipment

Technical Field

The utility model relates to a work piece location technical field, in particular to location frock and check out test set.

Background

After the curved surface parts are machined, relevant detection is needed to detect the forming quality of corresponding parts. At present, before the curved surface parts are detected, the parts need to be positioned in advance so as to ensure the detection accuracy.

Currently, a profiling tool is generally processed in advance according to the shape of a curved surface part to be positioned, and an adsorption part is installed inside the profiling tool. When the curved surface part to be detected is positioned, the curved surface part is placed in the adsorption part, and then the curved surface part is adsorbed and fixed by the adsorption part.

Once the existing profiling tool is machined, the size of the profiling tool is completely fixed. However, due to the existence of processing errors, even the contour of the same type of curved parts may not be completely consistent, that is, the contour of each curved part is different, so that when the same type of parts are positioned by using the profiling tool, the parts and the tool cannot be attached to each other, and the product is deformed during vacuum adsorption.

Therefore, how to overcome the above-mentioned drawbacks is a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a location is accurate and use the higher location frock of flexibility and check out test set.

The utility model provides a positioning tool, which is used for positioning a workpiece and comprises a tool body and at least one supporting convex part protruding out of the first surface of the tool body; the supporting convex part is used for supporting a positioned workpiece;

the positioning tool further comprises a first positioning block and a second positioning block, the first positioning block comprises a contact part which is used for being matched with at least part of a section of one side wall of the positioned workpiece, and the second positioning block comprises a profiling surface which is matched with a boss or a notch on the other side wall of the positioned workpiece;

when the tool body is used, the first positioning block, the second positioning block and the supporting convex part can jointly restrain the positioned workpiece so as to restrain the degree of freedom of the positioned workpiece except for moving towards the direction far away from the tool body along the direction perpendicular to the first surface.

When the utility model provides a when the location frock is fixed a position spare part, support spare part on each supports the convex part, the corresponding district's section that will be positioned the work piece supports and leans on first locating piece, and utilize the profiling surface that sets up on the second locating piece and the corresponding boss or the notch configuration on the work piece of being positioned, thereby make the work piece of being positioned under the restraint of supporting convex part, first locating piece and second locating piece, at least except that the direction ability of keeping away from the frock body on the first surface of perpendicular to moves, the degree of freedom of other directions is retrained.

Set up imitative type frock location spare part with prior art and compare, the utility model provides a location frock roughly sets up to the triplex: support convex part, first locating piece and second locating piece, the three encloses the degree of freedom that closes the restraint and be positioned the work piece, can suitably adjust separately position during the use, makes the surfacing of being positioned the work piece, the deformation of being positioned the work piece when can avoiding vacuum adsorption for the work piece fine absorption at the frock body of being positioned, and then guarantees follow-up detection position's accuracy, can improve testing result accuracy and uniformity, and, the utility model discloses well being positioned the work piece and supporting through a plurality of support convex parts, it is little with location frock area of contact by the supporting surface to be positioned the work piece, and then can reduce by the wearing and tearing of supporting surface.

Optionally, the first positioning block and the second positioning block are arranged oppositely, and at least the second positioning block is slidably supported by the tool body to be close to or far away from the first positioning block.

Optionally, the first locating block includes a detachable mounting seat and a locating body, the mounting seat is installed in the tool body along a transverse sliding direction, the locating body is provided with the contact portion, one of the opposite surfaces of the locating body and the mounting seat is fixedly connected with a guide pin, and the other one of the opposite surfaces of the locating body and the mounting seat is provided with a transverse guide hole which is matched with the guide pin to slide.

Optionally, the mounting seat and the positioning body are detachably mounted through a magnetic component.

Optionally, the workpiece positioning device further comprises at least one pressing block, and each pressing block is used for applying downward pressure to the positioned workpiece so that the supported surface of the positioned workpiece is in contact with all the supporting convex parts.

Optionally, the positioning device further comprises a pin shaft with a threaded section, the pressing block is fixedly connected with the pin shaft, a threaded hole is formed in the top wall of the second positioning block, and the threaded section of the pin shaft is connected with the threaded hole in a matched mode.

Optionally, at least one of the supporting convex parts is an adjustable supporting convex part, and the height of the adjustable supporting convex part relative to the upper surface of the tool body is adjustable.

Optionally, the upper surface of the tool body is provided with a mounting hole with an upward opening, the adjustable supporting convex part is supported and mounted in the mounting hole through an elastic component, the elastic component has a predetermined compression amount along the axial direction of the mounting hole, and at least part of the shaft section of the adjustable supporting convex part is located outside the mounting hole.

Optionally, the tool body further comprises an ejector rod, at least part of the shaft section of the ejector rod is provided with an external thread, the tool body is further provided with an internal thread hole matched with the external thread of the ejector rod, the internal thread hole extends along the radial direction of the mounting hole, and the inner end part of the ejector rod can penetrate through the internal thread hole to be matched and abutted with the adjustable supporting convex part to lock the axial position of the adjustable supporting convex part.

Optionally, the upper surface of the tool body is further provided with at least two vacuum adsorption components for adsorbing the supported surface of the positioned workpiece; the vacuum adsorption component comprises at least one first vacuum adsorption component and at least one second vacuum adsorption component, each second vacuum adsorption component is fixedly installed on the tool body, and the position of each first vacuum adsorption component on the upper surface of the tool body is adjustable.

Furthermore, the utility model also provides a check out test set, including above-mentioned arbitrary location frock.

The utility model provides a check out test set has above-mentioned location frock, so also has the above-mentioned technological effect of location frock.

Drawings

Fig. 1 is a schematic structural view of a positioning tool according to an embodiment of the present invention;

FIG. 2 is an exploded view of the structure shown in FIG. 1;

fig. 3 is a schematic structural view of the assembly of the tool body and the mounting seat of the present invention;

FIG. 4 is a schematic view of a workpiece to be positioned in a positioning tool;

fig. 5 is a flowchart of workpiece positioning according to the present invention.

The one-to-one correspondence between the names and reference numbers of the components in fig. 1 to 5 is as follows:

100-positioning a tool; 1-a tool body; 1-1-mounting holes; 20-a first positioning block; 2-1-notch; 2-mounting a base; 21-a pilot hole; 22-magnet mounting holes; 3-a guide pin; 4-a positioning body; 41-cylinder; 5-a magnet; 6-supporting the convex part; 7-an elastic member; 9-a first vacuum adsorption component; 10-a second vacuum adsorption element; 11-briquetting; 12-a pin shaft; 13-a second locating block; 131-a boss; 200-positioning the workpiece.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a positioning tool according to an embodiment of the present invention; FIG. 2 is an exploded view of the structure shown in FIG. 1; fig. 3 is a schematic structural view of the assembly of the tool body and the mounting seat of the present invention; fig. 4 is a schematic view of the positioned workpiece in the positioning tool. Wherein only a part of the structure of the positioning tool is shown in fig. 4.

The utility model provides a location frock is particularly useful for the location of the work piece that has the curved surface. The type of the curved surface can be various forms, and the technical scheme and the technical effect are described by taking parts with smooth curved surfaces as examples. Of course, the positioning tool of the scheme can also be used for positioning a workpiece without a curved surface, and is not limited herein.

The utility model provides a location frock 100 includes frock body 1 and outstanding at least one in frock body 1 upper surface supports convex part 6. The tool body 1 mainly plays a role of a mounting base, mounting and connection of other mechanisms are achieved, specific structures and materials can be set according to actual application environments, and the tool body can meet the use requirements as long as strength is met.

The utility model discloses well frock body 1's upper surface can set up to the plane, supports protruding portion 6 salient in the plane, and of course, frock body 1's upper surface is not restricted to the plane, also can be other structural style. The supporting convex portions 6 mainly serve to support the workpiece 200 to be positioned, that is, the workpiece 200 to be positioned is placed on each supporting convex portion 6, and each supporting convex portion 6 can position the workpiece 200 to be positioned in the vertical direction.

In a specific embodiment, the positioning tool 100 further includes a first positioning block 20 and a second positioning block 13, the first positioning block 20 includes a contact portion that is in fit abutment with at least a partial section of a side wall of the workpiece 200 to be positioned, and taking the workpiece 200 to be positioned as an example shown in the figure, the first positioning block includes a contact portion that is in fit abutment with a side wall section of the workpiece 200 to be positioned along a length direction.

Second locating block 13 includes a contoured surface that mates with a boss or recess on the other sidewall of workpiece 200 being located. The second positioning block 13 is shown to include a profiling surface which is matched with a boss or a notch on one side wall of the positioned workpiece 200 along the length direction, that is, the profiling surface can be a concave structure to be matched with the boss on the positioned workpiece 200; the contoured surface may also be a raised boss structure to match a recess on the workpiece 200 being positioned. The embodiment of the positioning workpiece 200 with the contour surface as a boss is shown, and as shown in the figure, the sidewall of the positioning workpiece 200 has a notch 2-1, and correspondingly, the second positioning block 20 is provided with a boss 131 which is matched with the notch 2-1, and the boss 131 of the second positioning block 20 extends into the notch 2-1 during positioning, and the two are matched to restrict the degree of freedom of the positioning workpiece 200.

When the positioned workpiece 200 is positioned, the first positioning block 20 abuts against the positioned workpiece 200 to limit one side position thereof, and the profiling surface of the second positioning block 13 cooperates with the notch or boss of the positioned workpiece 200 to limit the other direction of the positioned workpiece 200, so as to prevent the supported surface from sliding along the supporting convex part.

The second positioning block of the above embodiment has the profiling surface of the boss or the notch of the workpiece 200 to be positioned, and the profiling surface can limit the relative movement of the supporting boss of the workpiece 200 to be positioned and can improve the positioning accuracy.

Set up imitative type frock location spare part with prior art and compare, the utility model provides a location frock roughly sets up to the triplex: the supporting convex part 6, the first positioning block 20 and the second positioning block 13 enclose and restrict the degree of freedom of the positioned workpiece 200, and the respective positions can be properly adjusted when the tool is used, so that the surface of the positioned workpiece 200 is smooth, the deformation of the positioned workpiece during vacuum adsorption can be avoided, the positioned workpiece 200 can be well adsorbed on the tool body 1, the accuracy of subsequent detection positions is further ensured, and the accuracy and consistency of detection results can be improved; furthermore, the utility model discloses in the work piece 200 of being positioned supports through a plurality of support convex parts 6, the work piece 200 of being positioned is supported surface and location frock area of contact little, and then can reduce by the wearing and tearing of supporting surface.

In the above embodiment, the first positioning block 20 and the second positioning block 13 are disposed oppositely, and at least the second positioning block 13 is slidably supported by the tool body 1 to laterally approach or leave the first positioning block 20. Thus, the installation of the workpiece is convenient. And when the second positioning block 13 finishes positioning and the workpiece is vacuum-adsorbed, the second positioning block 13 can be moved out of the positioning position in a sliding manner, so that the detection of the contact position of the workpiece and the second positioning block 13 by the detection part is facilitated.

Similarly, the first positioning block 20 can be detachably connected with the tool body 1, so that the detection of the corresponding position of the workpiece by the detection part can be realized by detaching the first positioning block 20 after the positioning is finished.

In a specific embodiment, the first positioning block 20 includes a detachable mounting base 2 and a positioning body 4, the mounting base 2 is installed on the tool body 1 in a transverse sliding manner, one of the mounting base 2 and the tool body 1 is provided with a sliding groove, and the other is provided with a sliding rail matched with the sliding groove for sliding. The mounting base 2 can be fixed by a screw or a pin after sliding to a predetermined position along the tool body 1.

The positioning body 4 is arranged on the contact part, one of the opposite surfaces of the positioning body 4 and the mounting seat 2 is fixedly connected with the guide pin 3, and the other one is provided with a transverse guide hole 21 which is matched with the guide pin 3 to slide.

It should be noted that, the transverse direction described herein is defined by referring to fig. 1, and refers to the width direction of the tool body 1, only for the sake of simplicity in describing the technical solution. It should be understood by those skilled in the art that the use of directional terms herein should not be construed to limit the scope of the present teachings.

The structure of the contact part has various forms as long as the contact part can be accurately abutted and positioned with the workpiece, and the embodiment that the contact part is two cylinders 41 is provided, the cylinders 41 are in line contact with the workpiece, the contact area is smaller, and the workpiece is prevented from being abraded.

There are various ways in which the mounting socket 2 and the positioning body 4 can be made detachable, such as screws or bolts or pins. In one embodiment, the present invention provides an embodiment, specifically, the mounting seat 2 and the positioning body 4 are detachably mounted by a magnetic member. The mounting seat 2 and the positioning body 4 may be made of a material which is provided with a magnet 5 on one side and can be attracted by the magnet on the other side; this embodiment shows a magnet mounting hole 22 in the mounting base 2 for mounting the magnet 5. Of course, opposite surfaces of the mounting seat 2 and the positioning body 4 can be respectively provided with magnetic pole parts with opposite magnetism so as to realize mutual attraction during mounting.

The pressing block 11 in the above embodiments may be installed in the following manner. In a specific implementation mode, the positioning tool further comprises a pin shaft 12 with a threaded section, the pressing block 11 is fixedly connected with the pin shaft, a threaded hole is formed in the top wall of one of the positioning blocks, and the threaded section of the pin shaft 12 is connected with the threaded hole in a matched mode.

The pin shaft is in threaded connection with the positioning block, the length of the pin shaft 12 screwed into the threaded hole can be adjusted by rotating the pin shaft 12 forward or reversely, the height of the pressing block 11 is adjusted, the pressing block 11 is matched with different workpieces, and the use flexibility of the tool is greatly improved.

In the above embodiments, the utility model provides an in all supporting convex parts 6 at least one supporting convex part 6 is the adjustable supporting convex part, and the height-adjustable of the relative frock body 1 upper surface of adjustable supporting convex part like this supports the convex part and can adjust its height relative frock body 1 under being positioned work piece 200 pressure to adapt to the different shapes that are supported the surface. The height of the adjustable support protrusions is preferably automatically adjusted by the weight of the positioned workpiece 200, and an embodiment of the adjustable support protrusions will be described in detail later.

When the utility model provides a location frock is to being fixed a position work piece 200 when fixing a position, in the work piece 200 location in-process of being fixed a position, the adjustable support convex part is being fixed a position under work piece 200 action of gravity or under manual regulation, make all support convex part 6 homoenergetic and the work piece 200 of being fixed a position by the supporting surface contact, adjust the envelope supporting surface that the relative height that supports convex part 6 can dispose to form and the work piece 200 of being fixed a position by supporting surface looks adaptation promptly, the deformation of work piece 200 of being fixed a position when can avoiding vacuum adsorption like this, make the fine absorption of work piece 200 of being fixed a position at frock body 1, and then guarantee the accuracy nature of follow-up detection position, can improve testing result accuracy and uniformity.

All the supporting convex parts 6 are preferably adjustable supporting convex parts, so that all the supporting convex parts 6 can be configured to form supporting curved surfaces in various shapes, and the universality and the application flexibility of the positioning tool are greatly improved.

In order to overcome the above-mentioned warping problem, the positioning tool herein is further modified as follows, in order to avoid the warping phenomenon that may occur when the supported surface of the positioned workpiece 200 is a curved surface and is placed at a predetermined position, especially along the length direction of the curved surface.

In a specific embodiment, the positioning tool may further include at least one pressing block 11, and each pressing block 11 is configured to apply downward pressure to the positioned workpiece 200 so that the supported surface of the positioned workpiece 200 contacts with all the supporting protrusions 6.

The number of the pressing blocks 11 may be one or more, and the contact point with the positioned workpiece 200 may be one, or two or more. As long as the supported surface can be brought into full contact with all the supporting protrusions 6.

In a specific embodiment, the upper surface of the tool body 1 may be provided with a mounting hole 1-1 with an upward opening, the adjustable supporting protrusion 6 is supported and mounted in the mounting hole 1-1 through an elastic component 7, the elastic component 7 has a predetermined amount of compression along the axial direction of the mounting hole 1-1, and at least a part of the axial section of the adjustable supporting protrusion is located outside the mounting hole.

The elastic part 7 can be a spiral spring, and the mounting hole 1-1 can be a cylindrical hole matched with the spiral spring; of course, other parts with deformation capability, such as silicone, rubber, etc., are also possible.

In the above embodiment, the mounting hole 1-1 can guide the extension direction of the supporting protrusion 6 while realizing the mounting of the supporting protrusion 6, which is beneficial to improving the supporting stability.

In the above embodiments, the positioning tool 100 may further include a locking member for locking the distance between the adjustable supporting convex portions and the upper surface of the tool body 1, that is, when the workpiece 200 to be positioned is stably supported on each supporting convex portion 6, in order to improve the subsequent absorption accuracy, the axial position of the supporting convex portion 6 may be locked by the locking member.

In a specific embodiment, the locking member may include a push rod (not shown, but not obstructing the understanding of the following technical solutions by those skilled in the art), at least a part of the shaft section of the push rod has an external thread, the tool body 1 is further provided with an internal threaded hole matched with the external thread of the push rod, the internal threaded hole extends along the radial direction of the mounting hole, and the inner end of the push rod can pass through the internal threaded hole to be matched and abutted with the adjustable supporting convex portion 6 to lock the axial position of the adjustable supporting convex portion. The axial position mentioned here refers to the direction along which the corresponding adjustable supporting convex part moves relative to the tool body 1.

When the same type of positioned workpieces 200 are positioned for the first time, the positioned workpieces 200 can be placed on the supporting convex parts 6, and the first positioning block 20 and the second positioning block 13 are used for limiting the preset position of the tool body 1 in the horizontal plane, at the moment, the position of the adjustable supporting convex part is adjusted to enable the supported surface of the positioned workpiece 200 to be in contact with all the supporting convex parts 6, the position of the adjustable supporting convex part can be locked by the ejector rod, so that when the next similar positioned workpiece 200 is positioned subsequently, without adjusting the position of the supporting protrusion 6 again, the workpiece 200 to be positioned is directly placed on the supporting protrusion 6 with a fixed position, and the workpiece 200 to be positioned is positioned at a predetermined position of the tool body 1 only by using the first positioning block 20 and the second positioning block 13, please refer to fig. 5, a positioning flowchart for subsequent workpieces in addition to the first positioned workpiece 200 is given in fig. 5. Specifically, the position of the first positioning block 20 relative to the tool body 1 is determined by first positioning the workpiece, and step S1 in fig. 5 is to mount the positioning body 4 on the mounting base 2; step S2 is to support the workpiece 200 to be positioned on each supporting protrusion 6 (wherein the height position of each supporting protrusion 6 is locked and cannot move relatively to the tool body 1 when the first workpiece is mounted), and to abut the left side wall of the workpiece 200 to be positioned against the two cylinders 41 of the positioning body 4; in step S3, placing the second positioning block 13 on the tool body 1 and pushing the second positioning block 13 to move toward the workpiece 200 until the boss 131 of the second positioning block 13 completely fits with the notch 2-1 of the positioned workpiece 200, and simultaneously pressing the corresponding surface of the positioned workpiece 200 with the pressing block 11; in step S4, the vacuum component is started to suck the positioned workpiece, and then the second positioning block 13 and the positioning body 4 are removed to prevent the second positioning block 13 and the positioning body 4 from blocking the local surface of the positioned workpiece 200 in the subsequent detection step.

Therefore, the workpiece detection efficiency is greatly improved. It should be noted that step S3 in fig. 5 is only a schematic diagram showing a certain state of the positioned workpiece 200 and the second positioning block 13, and the notch 2-1 and the boss 131 are also only schematic diagrams, although the two are not shown to be completely matched, and after reading the text written in the description herein, it can be directly and unambiguously known that the notch 2-1 and the boss 131 are matched after actually being assembled, i.e. the representation in fig. 5 in this document does not hinder the understanding and implementation of the technical solution herein by those skilled in the art.

As mentioned above, each supporting protrusion 6 is an adjustable supporting protrusion, and each adjustable supporting protrusion can be vertically disposed and arranged at intervals. The figure shows an embodiment with four adjustable supporting protrusions.

In the above embodiments, the upper surface of the tool body 1 is further provided with at least two vacuum adsorption components for adsorbing the supported surface of the positioned workpiece 200. An embodiment in which four vacuum adsorption parts are provided is shown in fig. 1.

Further, the vacuum adsorption component comprises at least one first vacuum adsorption component 9 and at least one second vacuum adsorption component 10, each second vacuum adsorption component 10 is fixedly installed on the tool body 1, and the position of each first vacuum adsorption component 9 on the upper surface of the tool body 1 is adjustable.

Like this, when utilizing the utility model provides a when location frock is fixed a position the work piece of difference, can be according to the size of work piece, by the position that the first vacuum adsorption part 10 was adjusted to supporting surface shape for each vacuum adsorption part configuration forms best adsorption position, not only can optimize the work piece vacuum adsorption atress, can avoid work piece vacuum adsorption deformation moreover.

First vacuum adsorption part 9 and second vacuum adsorption part 10 all include mount pad and absorption head, and the absorption head is installed in the mount pad, and corresponding mount pad also is provided with the cooperation and installs the connection structure on frock body 1. The specific structures of the mounting seat and the adsorption head are not described in detail herein, and it is obvious to those skilled in the art that the mounting seat and the adsorption head can be understood and implemented according to the description herein.

The first vacuum suction unit 9 and the second vacuum suction unit 10 may have the same structure, but may have different structures.

Furthermore, the utility model also provides a check out test set, including above-mentioned arbitrary embodiment location frock.

The utility model provides a check out test set has above-mentioned location frock, so also has the above-mentioned technological effect of location frock.

It is right above the utility model provides a location frock and check out test set have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (11)

1. A positioning tool is used for positioning a workpiece and is characterized by comprising a tool body (1) and at least one supporting convex part (6) protruding out of a first surface of the tool body (1); the supporting convex part (6) is used for supporting a positioned workpiece (200);

the positioning tool further comprises a first positioning block (20) and a second positioning block (13), the first positioning block (20) comprises a contact part which is used for being matched with at least partial sections of one side wall of the positioned workpiece (200), and the second positioning block (13) comprises a profiling surface which is matched with a boss or a notch on the other side wall of the positioned workpiece (200);

when the tool body is used, the first positioning block (20), the second positioning block (13) and the supporting convex part can jointly restrain the positioned workpiece (200) so as to restrain the freedom degree of the positioned workpiece (200) except for moving in the direction away from the tool body along the direction perpendicular to the first surface.

2. The positioning tool according to claim 1, wherein the first positioning block (20) and the second positioning block (13) are oppositely arranged, and at least the second positioning block (13) is slidably supported on the tool body (1) to be close to or far away from the first positioning block (20).

3. The positioning tool according to claim 2, characterized in that the first positioning block (20) comprises a detachable mounting seat (2) and a positioning body (4), the mounting seat (2) is mounted on the tool body (1) in a transverse sliding manner, the positioning body (4) is provided with the contact portion, one of the opposite surfaces of the positioning body (4) and the mounting seat (2) is fixedly connected with a guide pin (3), and the other one is provided with a transverse guide hole (21) matched with the guide pin (3) for sliding.

4. The positioning tool according to claim 3, characterized in that the mounting seat (2) and the positioning body (4) are detachably mounted by magnetic components.

5. The positioning tool according to any one of claims 1 to 4, further comprising at least one pressing block (11), wherein each pressing block (11) is used for applying downward pressure to the positioned workpiece (200) so that the supported surface of the positioned workpiece (200) is in contact with all the supporting convex parts (6).

6. The positioning tool according to claim 5, further comprising a pin (12) having a threaded section, wherein the pressing block (11) is fixedly connected to the pin (12), a threaded hole is formed in the top wall of the second positioning block (13), and the threaded section of the pin (12) is connected with the threaded hole in a matching manner.

7. The positioning tool according to claim 5, characterized in that at least one of the support protrusions (6) is an adjustable support protrusion, and the height of the adjustable support protrusion relative to the upper surface of the tool body (1) is adjustable.

8. The positioning tool according to claim 7, wherein the upper surface of the tool body is provided with a mounting hole (1-1) with an upward opening, the adjustable supporting protrusion is supported and mounted in the mounting hole (1-1) through an elastic component (7), the elastic component (7) has a predetermined compression amount along the axial direction of the mounting hole (1-1), and at least part of the axial section of the adjustable supporting protrusion is located outside the mounting hole (1-1).

9. The positioning tool according to claim 8, further comprising a top rod, wherein at least a part of the shaft section of the top rod is provided with an external thread, the tool body (1) is further provided with an internal threaded hole matched with the external thread of the top rod, the internal threaded hole extends along the radial direction of the mounting hole (1-1), and the inner end part of the top rod can penetrate through the internal threaded hole to be matched and abutted with the adjustable supporting convex part so as to lock the axial position of the adjustable supporting convex part.

10. The positioning tool according to any one of claims 1 to 4, characterized in that the upper surface of the tool body (1) is further provided with at least two vacuum adsorption components for adsorbing the supported surface of the workpiece (200) to be positioned; the vacuum adsorption component comprises at least one first vacuum adsorption component (9) and at least one second vacuum adsorption component (10), each second vacuum adsorption component (10) is fixedly installed on the tool body (1), and the position of each first vacuum adsorption component (9) on the upper surface of the tool body (1) is adjustable.

11. A detection device, characterized by comprising a positioning tool (100) according to any one of claims 1 to 10.

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