Magnetic type multi-clamping-position sample plate detecting and positioning device and detecting method

Abstract

The invention discloses a magnetic type multi-clamping-position sample plate detection positioning device and a detection method, and relates to the technical field of sample plate detection clamps. According to the technical scheme, the sample plate nondestructive clamping device comprises a fixed bottom plate; the plurality of bases are arranged on the fixed bottom plate in an array manner; each base comprises a central hole positioning pin which is arranged at the top of the base and is used for being inserted into a central positioning hole of a detected sample plate; the side leaning positioning pin is also arranged at the top of the base and is matched with the central hole positioning pin to limit the transverse displacement of the detected sample plate; the magnetic adsorption unit is arranged in the base, the adsorption end of the magnetic adsorption unit is arranged below the detected sample plate, and the detected sample plate is adsorbed and fixed through magnetic force. According to the invention, high-precision and lossless clamping is realized, the detection efficiency and consistency are greatly improved, and good economical efficiency and universality are achieved.

Description

TECHNICAL FIELD

[0002] The present application relates to the technical field of template detection fixture, in particular to a magnetic multi-clamping-point template detection positioning device and a detection method. BACKGROUND

[0003] In the field of mechanical processing and precision detection, reliable clamping is the primary prerequisite for high-precision detection of thin sheet standard gauges such as radius templates and thread templates. Currently, mechanical clamps such as screw jacks, eccentric wheel presses, or spring collets are commonly used to fix templates. This method overcomes the micro-movement that may occur during detection by applying concentrated mechanical force, but it has significant inherent defects: to achieve effective clamping, the applied force must be greater than the disturbance that the template may experience, which can easily cause excessive local pressure in the clamped area. Due to the thinness and limited rigidity of the template itself, this local pressure can cause two irreversible damages: one is to induce micro-bending or torsional deformation of the template, directly changing its geometric profile as a reference; the other is to cause indentation or scratches at the contact point, damaging the surface integrity. These two damages not only distort the detection results of the current detection, but also permanently reduce the precision level of the template itself, causing damage to the expensive standard parts. Therefore, developing a clamping method that can not only provide sufficient fixing force but also evenly distribute the clamping force and completely eliminate mechanical stress has become a technical bottleneck that needs to be overcome to achieve "true non-destructive" detection of templates. SUMMARY

[0004] The present application provides a magnetic multi-clamping-point template detection positioning device, which aims to achieve non-destructive clamping of templates while clamping them.

[0005] The technical solution of the present application to solve the above technical problems is as follows: A magnetic multi-clamping-point template detection positioning device, comprising a fixed base plate for placement on the workbench of a detection device; a plurality of bases arranged in an array on the fixed base plate; Each base comprises: a center hole positioning pin arranged at the top of the base, used to insert into the center positioning hole of the template being detected; A side leaning positioning pin also arranged at the top of the base cooperates with the center hole positioning pin to limit the lateral displacement of the template being detected; And at least one magnetic adsorption unit arranged in the base, the adsorption end of the magnetic adsorption unit is arranged below the template being detected, and the template being detected is fixed by magnetic adsorption.

[0006] Further, the fixed base plate is made of acrylic material, and its size is 400mm x 400mm x 20mm.

[0007] Further, the number of bases is 15.

[0008] Further, the center hole positioning pin is made of hard alloy, the top of which is a circular arc column structure, and the height exceeds the base surface of the base by 5 mm.

[0009] Further, the diameter of the center hole positioning pin includes three specifications of 3.3 mm, 3.8 mm and 4.9 mm, which are respectively adapted to different size ranges of the detected sample plate.

[0010] Further, the magnetic adsorption unit is a strong magnet, the specification of which is 5 mm x 3 mm, and the adsorption force of a single magnet is not less than 8 N.

[0011] A multi-type sample plate batch detection method based on a magnetic adsorption type multi-card position device, which adopts the magnetic adsorption type multi-card position sample plate detection positioning device, the method comprising the following steps: Step S1: preparation and placement - placing the fixed base plate stably on the predetermined area of the workbench of the detection equipment; Step S2: parameter adaptation selection - selecting the clamping unit with corresponding adaptive parameters on the fixed base plate as the target clamping station according to the type of the target sample plate to be detected; the adaptive parameters at least include: the diameter of the center hole positioning pin, the distance between the side positioning pin and the center hole positioning pin, and the preset distance between the edge of the target sample plate and the edge of the fixed base plate; Step S3: sample plate clamping - sleeving the target sample plate with the center positioning hole on the center hole positioning pin of the target clamping station, rotating the target sample plate around the center hole positioning pin, making the reference side of the target sample plate contact closely with the side positioning pin of the same station, and fixing it by the magnetic force of the magnetic adsorption unit; Step S4: batch repetition and detection - repeating steps S2 and S3 for other target sample plates of the same batch to complete batch clamping on different clamping stations of the fixed base plate; then starting the detection equipment to perform automatic or sequential detection on all clamped sample plates.

[0012] Further, in step S2, the correspondence between the type of the target sample plate and the adaptive parameters includes at least one of the following: When the target sample plate is a R15-R25 mm radius sample plate, the diameter of the center hole positioning pin of the selected clamping station is 4.9 mm, the distance between the side positioning pin and the center hole positioning pin is 20 mm, and the preset distance between the edge of the target sample plate and the edge of the fixed base plate is 2 mm; When the target sample plate is a 60° or 55° threaded sample plate, the diameter of the center hole positioning pin of the selected clamping station is 4.9 mm, the distance between the side positioning pin and the center hole positioning pin is 10 mm, and the preset distance between the edge of the target sample plate and the edge of the fixed base plate is 1 mm; ​When the target template is a R25~R50mm or R52~R100mm radius template, the selected clamping station has a center hole positioning pin with a diameter of 3.8mm, the distance between the side positioning pin and the center hole positioning pin is 25mm, and the preset distance between the edge of the target template and the edge of the fixed bottom plate is 4.5mm; When the target template is a R7~R14.5mm radius template, the selected clamping station has a center hole positioning pin with a diameter of 3.8mm, the distance between the side positioning pin and the center hole positioning pin is 19.8mm, and the preset distance between the edge of the target template and the edge of the fixed bottom plate is 2.5mm; When the target template is a R1~R6.5mm radius template, the selected clamping station has a center hole positioning pin with a diameter of 3.3mm, the distance between the side positioning pin and the center hole positioning pin is 13.5mm, and the preset distance between the edge of the target template and the edge of the fixed bottom plate is 1.75mm.

[0013] The present application has the following beneficial effects: High precision and lossless clamping are achieved: the precise mechanical positioning of the "center hole pin + side pin" is combined with uniform and controllable magnetic force adsorption fixation, which completely eliminates the template bending and deformation problem caused by mechanical clamping force, protects the precision of the template itself, and lays a physical foundation for high-precision measurement.

[0014] The detection efficiency and consistency are greatly improved: the multi-card position (such as 15) design supports batch clamping, and the tool-free quick assembly and disassembly method significantly improves the batch detection efficiency. The unified and highly repeatable positioning reference ensures the high consistency of measurement data of different templates, different batches, and even different devices.

[0015] Excellent adaptation to optical detection environment: the lightweight acrylic bottom plate effectively avoids the common optical interference problems such as reflection and diffraction of metal clamps. The "edge distance" parameter optimized for each type of template fundamentally solves the problem of measurement point being blocked by the clamp, ensuring the clarity and integrity of the image measurement.

[0016] Good economy and versatility: one set of clamp system can cover the detection needs of seven categories and dozens of sizes of standard templates, replacing the original multiple sets of special clamps, significantly reducing the purchase, management and maintenance costs of clamps. Its structure is simple, reliable and durable, with very low training and use cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 An R15mm~R25mm installation schematic diagram according to at least one embodiment of the present disclosure is shown; Figure 2 For Figure 1 One of the clamping positions is enlarged. Figure 3 A 60° thread template and a 55° thread template installation schematic diagram is shown according to at least one embodiment of the present disclosure; Figure 4 For Figure 3 One of the clamping positions is enlarged; Figure 5 A R25mm~R50mm and R52mm~R100mm installation schematic diagram is shown according to at least one embodiment of the present disclosure; Figure 6 For Figure 5 One of the clamping positions is enlarged; Figure 7 A R7mm~R14.5mm installation schematic diagram is shown according to at least one embodiment of the present disclosure; Figure 8 For Figure 7 One of the clamping positions is enlarged; Figure 9 A R1mm~R6.5mm installation schematic diagram is shown according to at least one embodiment of the present disclosure; Figure 10 For Figure 9 One of the clamping positions is enlarged.

[0018] Figures 1-10 The reference signs shown in the figure respectively represent: a fixed bottom plate 1, a base 2, a center hole positioning pin 3, a side leaning positioning pin 4, a magnetic adsorption unit 5. DETAILED DESCRIPTION

[0019] The present application will be further described below in conjunction with the drawings and examples as follows: The present application aims to provide a detection and positioning solution capable of being compatible with multiple types and sizes of radius templates and thread templates, so as to overcome the technical defects of traditional mechanical clamps, such as sample plate deformation, low positioning efficiency, and optical interference. The present application uses a unified fixed bottom plate made of lightweight and optical interference-free material, and arranges multiple independent bases 2 in an array on the bottom plate; each base 2 adopts a double-positioning reference structure composed of a center hole positioning pin and a side leaning positioning pin, and combines a magnetic adsorption fixing method, to realize fast, non-destructive, and high-precision positioning and clamping of the detected sample plate; at the same time, the key size parameters of the positioning system are specially adapted and designed for different categories and size ranges of sample plates, to ensure that unobstructed imaging and high-consistency measurement can be realized on high-precision equipment such as an image measuring instrument.

[0020] The fixed bottom plate 1 is used to be placed on the workbench of a detection device; The plurality of bases 2 are arranged in an array on the fixed bottom plate 1; Each base 2 comprises: A center hole positioning pin 3 is arranged on the top of the base 2, which is used to insert the center positioning hole of the sample plate to be detected; A side leaning positioning pin 4 is also arranged on the top of the base 2, which cooperates with the center hole positioning pin 3 to limit the lateral displacement of the sample plate to be detected; And at least one magnetic adsorption unit 5 is arranged in the base 2, and the adsorption end of the magnetic adsorption unit 5 is arranged below the sample plate to be detected, and the sample plate to be detected is fixed by magnetic adsorption.

[0021] Please refer to Figures 1-10 The magnetic multi-card sample plate detection positioning device provided by the application comprises a fixed base plate 1 and a plurality of bases 2 arranged thereon.

[0022] The fixed base plate 1 is the bearing body and installation base of the whole device. Its main function is to provide a stable and flat support platform for all bases 2, and can be conveniently placed on the workbench of an image measuring instrument, a three-coordinate measuring machine or other precision detection equipment. In order to meet the special requirements of optical detection equipment on clamping tools.

[0023] Each base 2 comprises the following core components: a center hole positioning pin 3, a side leaning positioning pin 4 and at least one magnetic adsorption unit 5. In order to facilitate description and understanding, the local structure bearing these components can be referred to as the base 2, which is a protruding structure arranged on the fixed base plate 1, used to install the center hole positioning pin 3, the side leaning positioning pin 4 and the magnetic adsorption unit 5. The base 2 can be integrally formed with the fixed base plate 1, or can be a split structure and fixed by a connecting piece. The main function of the base 2 is to provide accurate installation position and sufficient height for the positioning pin and the magnet, so as to ensure that the sample plate to be detected can be stably supported and at a proper height.

[0024] The center hole positioning pin 3 is the core component of the base 2 for radial (or circumferential) positioning. Its design purpose is to accurately cooperate with the existing standard center positioning hole on the sample plate (radius sample plate or thread sample plate). Specifically, the center hole positioning pin 3 is vertically arranged at the top center position of the base 2. It has high dimensional accuracy requirements to ensure that the cooperation gap with the sample plate center hole is appropriate, which can easily insert and effectively limit the movement of the sample plate in the horizontal plane except rotating around the pin axis.

[0025] The side abutting positioning pin 4 is a key component for the base 2 to realize axial or angular positioning. Its function is to work with the center hole positioning pin 3 to form the "two pins" in the classic positioning principle of "one face and two pins". Specifically, the side abutting positioning pin 4 is also vertically arranged on the top of the base 2, but maintains a fixed distance with the center hole positioning pin 3. When the sample plate is centered on the center hole positioning pin 3, the sample plate is slightly rotated around the pin shaft, so that a specific reference side of the sample plate, usually the curved part, straight edge or specific tooth-shaped side of the sample plate, is in contact with and abuts against the cylindrical surface of the side abutting positioning pin 4. At this time, all degrees of freedom of the sample plate in the horizontal plane are completely limited, realizing accurate angular positioning and certain position constraint, and ensuring the repeatability of each clamping. The side abutting positioning pin 4 is preferably made of wear-resistant hard alloy material, and its height can be comparable to or slightly lower than that of the center hole positioning pin 3. For different types of sample plates, the hole positions on the base 2 for mounting the center hole positioning pin 3 and the side abutting positioning pin 4 have different center distances, which is the distance between the side abutting positioning pins 4.

[0026] The magnetic adsorption unit 5 is the core of the device to realize "non-destructive clamping", which is used to replace the mechanical pressing or screw locking mechanism of the traditional clamp. Its purpose is to provide an adsorption force perpendicular to the plane of the sample plate, to stably fix the sample plate in its positioning position, while avoiding any mechanical stress that may cause the sample plate to bend, twist or scratch the surface. The magnetic adsorption unit 5 is embedded or fixed on the top of the base 2, below the sample plate under test. Its installation position needs to ensure that the adsorption force is uniform and stable. The upper surface of the magnet is usually slightly lower than or flush with the support surface of the base 2, to ensure good contact or close inductive with the bottom surface of the sample plate.

[0027] Further, the fixed bottom plate 1 is made of acrylic material, with a size of 400mm x 400mm x 20mm. The fixed bottom plate 1 is made of acrylic plate. Acrylic material has the characteristics of light weight, controllable light transmittance, not easy to produce metal reflection or diffraction, etc. interference with optical imaging, while having sufficient structural strength and dimensional stability. More preferably, the size of the fixed bottom plate 1 is designed to be 400mm (long) x 400mm (wide) x 20mm (thick). This size can make full use of the area of the common detection equipment workbench, accommodate a sufficient number of bases 2 for batch detection, and at the same time, the thickness of 20mm ensures the overall rigidity of the bottom plate after carrying multiple sample plates, preventing the positioning accuracy from being affected by its own deformation.

[0028] On the upper surface of the fixed base plate 1, a plurality of mutually independent bases 2 are arranged in a predetermined array and at uniform intervals. Each base 2 constitutes an independent sample plate clamping station. In one specific embodiment shown in the drawings, the total number of bases 2 is 15, arranged in a regular matrix. This multi-station design is the basis for the device to achieve high efficiency batch detection. The operator can install the same or different types of sample plates on multiple stations at one time, and then perform continuous or automated measurement, significantly improving detection efficiency.

[0029] In a preferred embodiment, the center hole positioning pin 3 is made of hard alloy (such as YG6, YG8, etc.). Hard alloy has extremely high hardness, wear resistance and dimensional stability, and can withstand repeated installation and removal of sample plates for a long time without wear and deformation, thereby ensuring the persistence of positioning accuracy. The top of the center hole positioning pin 3 is designed as a circular arc column structure that is higher than the base surface of the base 2 by a certain distance. More specifically, the height difference is designed to be 5 mm. This design allows a small gap to be formed between the bottom surface of the sample plate and the base surface of the base 2 after the sample plate is placed, which facilitates effective magnetic attraction on the one hand, and facilitates the insertion of a thin sheet for fine adjustment or cleaning when necessary on the other hand. The circular arc chamfer or circular arc head design at the top facilitates easy fitting of the center hole of the sample plate, providing guidance and improving clamping convenience.

[0030] Considering that the device needs to adapt to sample plates of various specifications, and the diameters of the center positioning holes of different series of sample plates may differ, the diameter of the center hole positioning pin 3 is not a single size. According to relevant standards or commonly used sample plate specifications in the industry, the present application designs a plurality of diameter specifications of the center hole positioning pin 3 for selection or integration. In one specific parameter configuration scheme, the diameter of the center hole positioning pin 3 includes but is not limited to three specifications: 3.3 mm, 3.8 mm and 4.9 mm. These specifications are respectively for small radius sample plates and threaded sample plates in different size ranges. For example, for small radius sample plates R1-R6.5 mm, the center hole is usually small, and a positioning pin of 3.3 mm is suitable; for medium and large radius sample plates R7-R14.5 mm and R25-R100 mm, the center hole is slightly larger, and a positioning pin of 3.8 mm is suitable; for R15-R25 mm radius sample plates and 60°, 55° threaded sample plates, the center hole is usually of standard size, and a positioning pin of 4.9 mm is suitable. In the actual device, a plurality of bases 2 with different hole diameters of the positioning pin can be made, or a replaceable positioning pin design can be used to realize the compatibility of one set of clamps for multiple types of sample plates.

[0031] The magnetic adsorption unit 5 is a strong magnet, preferably a high-performance permanent magnet such as neodymium iron boron (NdFeB). In one specific embodiment, the size of each magnetic adsorption unit 5 is a diameter of 10 mm and a height of 5 mm. 5mm, thickness 3mm cylindrical magnet. The adsorption force of a single such magnet is not less than 8N. This adsorption force is calculated and verified to be sufficient to overcome the weight of the sample plate itself and slight external disturbances, ensuring that the sample plate does not shift during the detection process, while not being too large to cause deformation of the thin sample plate or difficulty in taking and placing.

[0032] The device and system described in the present application are specially designed for clamping and positioning standardized radius gauges and thread gauges. Radius gauges, also known as R gauges, are used to check the radius of a circular arc; thread gauges, also known as pitch gauges, are used to check the pitch of ordinary threads. These gauges are usually thin sheet-like measuring tools with a specific profile, with a central hole for positioning and a straight edge as a measurement reference.

[0033] The following will elaborate on the specific implementation of a multi-type gauge batch detection method based on the magnetic multi-clamping device in detail. The core of this method is to use the precise adaptive parameters preset for different gauges in the device to achieve efficient, accurate and non-destructive batch detection through a standardized operation process.

[0034] Overall process summary of the method

[0035] The detection method provided by the present application mainly includes four key stages: preparation and placement, parameter adaptation selection, gauge clamping, and batch repetition and detection. This method fully utilizes the technical advantages of the positioning device "multi-clamping, magnetic adsorption, parameterized adaptation", and converts the subjective experience of the operator into objective and repeatable standardized steps, ensuring the efficiency of the detection process and the high consistency of the results.

[0036] Step S1: Preparation and placement

[0037] The purpose of this step is to establish a stable and clean reference platform for detection. The operator should first ensure that the workbench of the detection equipment (such as an image measuring instrument or a three-coordinate measuring machine) is clean and flat. Then, take out the magnetic multi-clamping gauge detection and positioning device described in the present application, visually inspect the surface of the fixed bottom plate 1 and each clamping unit for dust, oil stains or foreign matter. If necessary, use a dust-free cloth and alcohol for gentle cleaning and ensure complete drying. Each clamping unit includes a base 2 and the center hole positioning pin 3, side positioning pin 4 and magnetic adsorption unit 5 on it.

[0038] After cleaning, the fixed base plate 1 is placed smoothly on the predetermined area of the detection equipment workbench. The "predetermined area" generally refers to the position calibrated in the equipment coordinate system, with good vision and convenient programming measurement. When placing, the bottom edge of the base plate 1 should be approximately parallel to a reference edge of the workbench to facilitate the establishment of the coordinate system of the subsequent measurement program. Since the base plate 1 is made of lightweight acrylic material, this process can be easily completed by one person.

[0039] Step S2: Parameter adaptation selection

[0040] This step is the key wisdom decision-making link of the method of the application to realize "one device multiple use" and "accurate positioning". The operator needs to actively identify and select those preset adaptation parameters that match the type of the target sample plate from among the numerous clamping units (clamping positions) on the fixed base plate 1, as the "target clamping station" for this time.

[0041] The "adaptation parameters" are designed and fixed on the device hardware in advance according to the structure and imaging requirements of various sample plates, and at least include three core geometric parameters: The diameter of the center hole positioning pin 3: it must match the diameter of the center positioning hole of the target sample plate to achieve initial radial positioning.

[0042] The side-by-side positioning pin spacing: the horizontal center distance between the side-by-side positioning pin 4 and the center hole positioning pin 3 must match the design distance from the center hole to the positioning reference edge of the target sample plate to achieve accurate angular positioning.

[0043] In addition, the preset distance between the edge of the target sample plate and the edge of the fixed base plate 1.

[0044] In order to facilitate the operator to quickly identify, in the actual device, simple color marks, digital numbers or symbol marks can be made next to the bases 2 of different parameter groups.

[0045] Specific embodiments of the adaptation parameter corresponding relationship

[0046] As shown in the table, according to the industry standard sample and the best practice of optical detection, the application has preset a detailed parameter corresponding relationship. The following table provides the preferred adaptation parameter scheme for five typical sample plates, which can be selected by the operator: Figures 1-10

[0047] Note: This distance is the design distance between the axes of the two positioning pins, which ensures that the sample plate reference edge is close to the optimal imaging position.

[0048] ​The operator only needs to select the positioning pin with the corresponding diameter and the clamping unit with the corresponding distance according to the type of the sample to be detected. For example, if a sample with a radius of R20mm is to be detected, the clamping unit with a center hole positioning pin 3 with a diameter of 4.9mm and a side abutting positioning pin 4 with a distance of 20mm from the center hole positioning pin 3 should be selected, and the distance between the edge of the sample and the edge of the fixed base plate should be 2mm.

[0049] Step S3: sample clamping

[0050] After selecting the target clamping station, the single sample can be quickly and non-destructively clamped. The specific operation is as follows: Pick and place: hold the non-measurement area of the target sample (usually the edge or the middle part without precise contour) with one hand.

[0051] Align the center positioning hole of the sample with the top arc of the center hole positioning pin 3 on the selected station.

[0052] Sleeve in: gently move the sample downward so that the center hole is smoothly sleeved into the center hole positioning pin 3. Since the top of the positioning pin is designed as a circular arc column, this process has a self-guiding effect and is easy to operate.

[0053] Positioning: rotate the sample slightly along the horizontal plane with the center hole positioning pin 3 as the axis. At the same time, feel the edge of the sample until its specific reference side (usually a straight edge for a radius sample or a certain reference surface of the tooth profile for a thread sample) is in complete contact with the cylindrical side of the side abutting positioning pin 4 in the same station. At this time, the hand can feel a clear block, indicating that all degrees of freedom of the sample in the horizontal plane have been completely constrained, achieving precise positioning.

[0054] Adsorption and fixation: release the hand, and the sample naturally falls under the action of gravity, and its bottom surface is immediately adsorbed by the uniform magnetic force generated by the magnetic adsorption unit 5 (strong magnet) below. This process does not require any additional pressing force or locking action, avoiding mechanical stress. The magnetic force (≥8N) is sufficient to ensure the absolute stability of the sample during subsequent detection, and the non-destructive fixation is a surface contact.

[0055] The entire S3 step can be completed in 1 minute with one person skilled in operation without any auxiliary tools.

[0056] Step S4: batch repetition and detection

[0057] For the same type or different type samples that need to be detected in batches, steps S2 and S3 are repeated. Other target samples are clamped in different clamping stations with parameters adapted on the fixed base plate 1. Since the base plate is designed with multiple clamping stations (such as 15), multiple samples can be clamped at one time.

[0058] When all the sample plates to be detected are clamped, the operator can start the pre-programmed automatic measurement program on the detection equipment, or perform manual measurement. Since each sample plate is precisely positioned by the method of the present application with high repeatability and without stress, the detection equipment can quickly and accurately sequentially collect data and analyze the key profiles (such as the radius of the arc, the thread profile) on each sample plate, ensuring the high consistency of batch detection data.

[0059] After detection, the sample plate is easily disassembled: only need to pinch the edge of the sample plate with fingers, and slightly add vertical force to overcome the magnetic force to take it down, without jamming, and will not cause any damage or deformation to the sample plate. The bottom plate can be immediately used for detection of the next batch of sample plates.

[0060] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A magnetic multi-position template detection and positioning device, characterized in that, Includes a fixed base plate (1) for placement on the worktable of the testing equipment; Multiple bases (2) are arranged in an array on the fixed base plate (1); Each of the bases (2) includes: A center hole positioning pin (3) is provided on the top of the base (2) for insertion into the center positioning hole of the sample to be inspected; A side-mounted positioning pin (4) is also located on the top of the base (2), which cooperates with the center hole positioning pin (3) to limit the lateral displacement of the sample under test; And at least one magnetic adsorption unit (5) is provided in the base (2), with the adsorption end of the magnetic adsorption unit (5) located below the sample to be tested, and the sample to be tested is fixed by magnetic adsorption.

2. The magnetic multi-position template detection and positioning device according to claim 1, characterized in that, The fixed base plate (1) is made of acrylic material and its size is 400mm×400mm×20mm.

3. The magnetic multi-position template detection and positioning device according to claim 1, characterized in that, The number of bases (2) is 15.

4. The magnetic multi-position template detection and positioning device according to claim 1, characterized in that, The center hole positioning pin (3) is made of hard alloy, and its top is a circular arc cylinder structure, and its height exceeds the base surface of the base (2) by 5mm.

5. The magnetic multi-position template detection and positioning device according to claim 1, characterized in that, The diameter of the center hole positioning pin (3) includes three specifications: 3.3mm, 3.8mm and 4.9mm, which are adapted to different sizes of the test samples.

6. The magnetic multi-position template detection and positioning device according to claim 1, characterized in that, The magnetic adsorption unit (5) is a strong magnet, and its specifications are as follows: 5mm×3mm, the attraction force of a single magnet is not less than 8N.

7. A method for batch testing of multiple types of samples based on a magnetic multi-position device, characterized in that, The method using the magnetic multi-position template detection and positioning device as described in any one of claims 1 to 6 includes the following steps: Step S1: Preparation and Placement - Place the fixed base plate (1) stably on the predetermined area of ​​the workbench of the testing equipment; Step S2: Parameter adaptation selection - Based on the type of the target sample to be tested, select the clamping unit with corresponding adaptation parameters on the fixed base plate (1) as the target clamping station; the adaptation parameters include at least: the diameter of the center hole positioning pin (3), the distance between the side positioning pin (4) and the center hole positioning pin (3), and the preset distance between the edge of the target sample and the edge of the fixed base plate (1); Step S3: Template clamping - The target template is fitted onto the center hole positioning pin (3) of the target clamping station with its center positioning hole, and the target template is rotated around the center hole positioning pin (3) so that its reference side is in contact with the side positioning pin (4) of the same station, and is attracted and fixed by the magnetic force of the magnetic adsorption unit (5). Step S4: Batch Repetition and Inspection - For other target samples in the same batch, repeat steps S2 and S3 to complete batch clamping at different clamping stations on the fixed base plate (1); then start the inspection equipment to perform automated or sequential inspection on all clamped samples.

8. The method for batch testing of multiple types of samples based on a magnetic multi-position device according to claim 7, characterized in that, In step S2, the correspondence between the type of the target template and the adaptation parameters includes at least one of the following: When the target template is a template with a radius of R15~R25mm, the diameter of the center hole positioning pin (3) of the selected clamping station is 4.9mm, the distance between the side positioning pin (4) and the center hole positioning pin (3) is 20mm, and the preset distance between the edge of the target template and the edge of the fixed base plate (1) is 2mm. When the target template is a 60° or 55° thread template, the diameter of the center hole positioning pin (3) of the selected clamping station is 4.9mm, the distance between the side positioning pin (4) and the center hole positioning pin (3) is 10mm, and the preset distance between the edge of the target template and the edge of the fixed base plate (1) is 1mm. When the target template is a template with a radius of R25~R50mm or R52~R100mm, the diameter of the center hole positioning pin (3) of the selected clamping station is 3.8mm, the distance between the side positioning pin (4) and the center hole positioning pin (3) is 25mm, and the preset distance between the edge of the target template and the edge of the fixed base plate (1) is 4.5mm. When the target template is a template with a radius of R7 to R14.5mm, the diameter of the center hole positioning pin (3) of the selected clamping station is 3.8mm, the distance between the side positioning pin (4) and the center hole positioning pin (3) is 19.8mm, and the preset distance between the edge of the target template and the edge of the fixed base plate (1) is 2.5mm. When the target template is a template with a radius of R1 to R6.5mm, the diameter of the center hole positioning pin (3) of the selected clamping station is 3.3mm, the distance between the side positioning pin (4) and the center hole positioning pin (3) is 13.5mm, and the preset distance between the edge of the target template and the edge of the fixed base plate (1) is 1.75mm.

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