Combined detection tool for preventing size from being missed

Abstract

The utility model relates to an anti-missing size combined testing fixture, which comprises a positioning piece, a first sensor, a controller, a first indicating piece, a plurality of groups of push blocks, a second sensor and a second indicating piece, and is characterized in that the first sensor correspondingly detects the positioning position of the positioning piece, and the push blocks can reciprocate relative to the positioning piece; the second sensor correspondingly detects the in-place position of the push block moving towards the positioning piece, and the first sensor can sense whether a to-be-detected product is placed on the positioning piece or not and transmit a signal to the controller as a detection signal. Each second sensor can transmit a signal to the controller as a signal for indicating whether the product is qualified or not by detecting the in-place position of the push block or not, so as to control the work of the first indicating piece and the second indicating piece, thereby reducing process leak detection and misjudgment caused by manual reasons, realizing automatic judgment of whether the product is qualified or not and counting, and improving the working efficiency. And the device is simple, convenient and quick to use, and realizes quick combined detection.

Description

Technical Field

[0001] This utility model belongs to the field of detection device technology, specifically relating to a combined inspection tool for preventing missed detection of dimensions. Background Technology

[0002] Products need to undergo linear dimension and geometric tolerance checks before processing or shipment to determine if they meet the drawing requirements. If a product is defective, it may be impossible to assemble, or it may fail to meet usage requirements after assembly, or even pose safety hazards. For example, in quality management, if a product's count-type characteristic CPK value does not meet 1.67, 100% inspection of that characteristic is required to meet product quality control requirements. This involves using combined inspection fixtures, but existing combined inspection fixtures still have the following drawbacks:

[0003] I. Currently, combined inspection fixtures involve two to three inspection steps, or even dozens of inspection steps, all of which require manual inspection. Especially when combined inspection fixtures are used for full product inspection, inspectors may have to inspect thousands of products a day, which is labor-intensive and can easily lead to missed inspections in the process, affecting the reliability of the inspection results.

[0004] Second, combined inspection tools rely on manual judgment of whether products are qualified and counting. Especially when the dimensional tolerance is small, as the workload increases, it not only affects work efficiency and is not conducive to statistical verification, but also easily leads to misjudgment of whether products are qualified, causing defective products to flow to the customer and have adverse effects.

[0005] Third, although coordinate measuring machine and other related phase detection instruments can perform combined detection of product dimensions, the detection of dimensions takes 5 to 6 minutes, and the equipment cost is high. The debugging and operation are also difficult, which affects the detection efficiency. Utility Model Content

[0006] This utility model aims to solve at least one of the above-mentioned technical problems to a certain extent. This utility model provides a dimension combination inspection tool to prevent missed inspections, which can reduce missed inspections and misjudgments caused by human error, realize automatic determination of whether products are qualified and counting, and is simple, convenient and fast to use.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A dimension inspection tool for preventing missed inspections includes a positioning element, a first sensor, a controller, a first indicator, several sets of push blocks, a second sensor, and a second indicator. The first sensor detects the positioning position of the positioning element. The first sensor, the second sensor, the first indicator, and the second indicator are all electrically connected to the controller. The push blocks can reciprocate relative to the positioning element. The second sensor detects the position of the push blocks as they move toward the positioning element.

[0009] In a preferred embodiment, the positioning member is provided with a positioning boss, which is used to cooperate with the hole / shape of the workpiece to be inspected, so as to realize the rapid positioning, placement and removal of the workpiece to be inspected.

[0010] In a preferred embodiment, the positioning member is provided with one or more clearance grooves that can cooperate with the corresponding push block. The clearance grooves are used to make way for the push block as it moves toward the positioning member, and can adapt to the shape of the push block to avoid affecting the push block's positioning.

[0011] In a preferred embodiment, the first sensor and the second sensor are proximity sensors or fiber optic sensors. Proximity sensors have the advantage of low cost, while fiber optic sensors have the advantage of requiring less installation space. Depending on the detection requirements, one of the proximity sensors and the fiber optic sensors can be selected or used in combination in a combined fixture.

[0012] In a preferred embodiment, a push block is included that can slide with the positioning member in the reciprocating movement direction of the push block, and is used to guide and support the sliding of the push block with the positioning member, which can save components and make the structure more compact.

[0013] In a preferred embodiment, at least one support member is included, and at least one push block is slidably engaged with the support member in the reciprocating direction of the push block. The push block is provided with a sensor clearance groove, which can correspond to or make way for a second sensor. After the push block is moved relative to the positioning member, the position where the sensor clearance groove corresponds to the second sensor is used as the determination position for the product to be tested to be out of size, and the position where the sensor clearance groove makes way for the second sensor is used as the determination position for the push block to be in place, i.e., the determination position for the product to be tested to be out of size.

[0014] In a preferred embodiment, the first sensor and the second sensor are disposed in the positioning member or the support member, which can save on the support member.

[0015] In a preferred embodiment, the push block is provided with limiting members at both ends, and an elastic support member is provided between the support member and the limiting member at the tail end of the push block, so as to support the push block to automatically reset.

[0016] In a preferred embodiment, the first indicator or the second indicator is a process light and / or a buzzer alarm. The controller is used to control the operation of the first indicator and the second indicator according to the signals of the first sensor and the second sensor. The color, number, brightness, etc. of the process light can be used to display whether the corresponding inspection process is qualified. The voice, buzzing, color, flashing, etc. of the buzzer alarm can be used to display whether the corresponding inspection process is qualified. The two can be used selectively or in combination.

[0017] In a preferred embodiment, a switch is included, which is electrically connected to the controller and is used to control the opening and closing of a circuit system including the controller, a first sensor, a second sensor, and a second indicator.

[0018] In a preferred embodiment, a reset button is included, which is electrically connected to the controller and is used to control the second indicator to reset via the controller.

[0019] In a preferred embodiment, a counter is included, which is electrically connected to a controller, the controller being used to control the counter to count based on signals from a first sensor and a second sensor.

[0020] Compared with the prior art, the beneficial effects of this utility model are at least as follows:

[0021] (1) The combined inspection fixture is used to detect and identify by adding a first sensor and a second sensor. The first sensor corresponding to the positioning piece can sense whether the product to be inspected is placed on the positioning piece and transmit a signal to the controller as a detection signal. After the push block moves towards the positioning piece and contacts the product to be inspected on the positioning piece, the second sensors corresponding to the push block can transmit a signal to the controller as a product qualification signal by detecting the position of the push block, thereby controlling the corresponding second indicator to work and reducing the process omissions caused by human error during combined inspection.

[0022] (2) The combined inspection fixture automatically displays the judgment result by further adding a first indicator and a second indicator. During each process inspection, the second sensor transmits a signal to the controller to automatically determine whether the product is qualified or unqualified. After the inspector removes the inspected product, if the first sensor does not sense the inspected product, the controller can control the first indicator to indicate whether the product is qualified or unqualified, thereby realizing automatic judgment of whether the product is qualified. This reduces misjudgment caused by human error during combined inspection and avoids defective products flowing to the customer and causing adverse effects.

[0023] (3) The combined inspection fixture has a simple structure. The positioning component and the push block, or the support component and the push block can be guided to move through sliding cooperation. The push block can be further equipped with sensor clearance slots corresponding to the non-conforming product position area to facilitate the detection of the second sensor in place. Furthermore, an elastic support component is added to make the push block move and automatically reset. A counter is further added to realize the counting of qualified products to facilitate the statistical verification by the inspection personnel. Taking the inspection of the heat sink as an example, the inspection time can be shortened to less than 30 seconds. It is simple, convenient and fast to use, and realizes rapid combined inspection. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram illustrating the use of one embodiment of this utility model;

[0027] Figure 3 This is a signal transmission diagram of one embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of push block No. 3 and push block No. 4 according to one embodiment of this utility model;

[0029] Figure 5 This is a schematic diagram of the detection of defective products according to one embodiment of this utility model;

[0030] Figure 6 This is a schematic diagram illustrating the testing of a qualified product according to one embodiment of this utility model;

[0031] Figure 7 This is a schematic diagram illustrating the use of the added elastic support component in one embodiment of this utility model.

[0032] Markings in the diagram: Positioning component 1, positioning boss 101, clearance groove 102, first sensor 2, first indicator 3, green light 301, buzzer alarm 302; Push block 4, push block 1 401, push block 2 402, push block 3 403, push block 404; Second sensor 5, second sensor 1 501, second sensor 2 502, second sensor 3 503, second sensor 4 504; Second indicator 6, first... Second indicator 601, second indicator 602, second indicator 603, second indicator 604, controller 7; radiator 8, radiator base plate 801, radiator hole 802; support 9, guide hole 901, handle 10, sensor clearance slot 11, PLC control box 12, mounting plate 13, through hole 14, reset button 15, counter 16, switch 17, shaped boss 18, nut 19, spring 20. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the terms "left," "right," "front," "rear," "horizontal," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" or "several" means two or more, unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "joined," "fixed," etc., should be interpreted broadly, for example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] To address the issue that existing combined inspection fixtures rely on manual inspection and judgment of product quality, it is necessary to solve the technical problems of ensuring that inspectors check every step of the process and preventing misjudgments during product judgment. Figure 1 The diagram shows a preferred embodiment of the anti-missed inspection size combination fixture of this utility model. The anti-missed inspection size combination fixture includes a positioning element 1, a first sensor 2, a controller 7, a first indicator 3, several sets of push blocks 4, a second sensor 5, and a second indicator 6. The first sensor 2 is used to detect the positioning position of the positioning element 1 and sense whether the product to be inspected is placed on the positioning element 1 and transmits a signal to the controller 7. The first sensor 2, the second sensor 5, the first indicator 3, and the second indicator 6 are all electrically connected to the controller 7. The push blocks 4 can reciprocate relative to the positioning element 1. The second sensor 5 is used to detect the position of the push blocks 4 as they move towards the positioning element 1. The push blocks 4 are used to move towards the positioning element 1 and contact the product to be inspected. The controller 7 is notified whether the second sensor 5 can detect the position of the push blocks 4 at this time, thereby controlling the second indicator 6 to indicate to the operator, avoiding missed inspections in the process and automatically determining whether the inspected product is qualified.

[0036] like Figure 1As shown, taking four sets of push blocks 4, second sensors 5, and second indicators 6 as an example, and naming each set according to the process number, with the controller 7 using a PLC, the first set consists of push block 401, second sensor 501, and second indicator 601 located to the left of positioning element 1. Push block 401 can move horizontally back and forth relative to positioning element 1 in the left-right direction, and second sensor 501 detects the position where push block 4 moves to the right and approaches positioning element 1. The second set consists of push block 402, second sensor 502, and second indicator 602 located to the right of positioning element 1. Push block 402 can move horizontally back and forth relative to positioning element 1 in the left-right direction, and second sensor 502 detects the position where push block 4 moves to the left and approaches positioning element 1. The third set consists of push block 403, second sensor 503, and second indicator 602. The indicator 603 is located to the left front of the positioning member 1. The third push block 403 can move horizontally back and forth relative to the positioning member 1 in the front-back direction. The third second sensor 503 detects the position where the push block 4 moves backward toward the positioning member 1. The third group of the third push block 403, the third second sensor 503 and the third second indicator 603 are located to the left front of the positioning member 1. The third push block 403 can move horizontally back and forth relative to the positioning member 1 in the front-back direction. The third second sensor 503 detects the position where the push block 4 moves backward toward the positioning member 1. The fourth group of the fourth push block 404, the fourth second sensor 504 and the fourth second indicator 604 are located to the right front of the positioning member 1. The fourth push block 404 can move horizontally back and forth relative to the positioning member 1 in the front-back direction. The fourth second sensor 504 detects the position where the push block 4 moves backward toward the positioning member 1.

[0037] like Figure 2 and Figure 3As shown, taking the product to be inspected as a heat sink 8, and using the third push block 403 as an example (which is U-shaped), the working principle of the combined inspection fixture can be as follows: The heat sink 8 is placed on the positioning component 1. The first sensor 2 senses the heat sink 8 on the positioning component 1 and transmits the signal to the PLC as a condition for inspection. The first push block 401 and the second push block 402 at the left and right ends are manually pushed. The first push block 401 and the second push block 402 move to contact the left and right ends of the heat sink base plate 801, respectively. At this time, the first sensor senses the first push block 401, and the second sensor senses the second push block 402, and transmits the signal to the PLC. The PLC controls the corresponding first and second indicators 601 and 602. The second indicator 602 gives a pass indication. Then, the third push block 403 and the fourth push block 404 are manually pushed. The third push block 403 contacts the middle of the heat sink 8, and the fourth push block 404 contacts the right end of the main body of the heat sink 8. The third sensor senses the third push block 403, and the fourth sensor senses the fourth push block 404, and transmits the signal to the PLC. The PLC controls the corresponding third and fourth second indicators 603 and 604 to give a pass indication. When all four second indicators 6 are pass indications, the PLC controls the first indicator 3, for example, to light up the green light 301 of the PLC-controlled electrical control box 12, indicating that the product is qualified. The inspector can then remove the qualified heat sink 8 for the next inspection.

[0038] If a missed inspection or a product is found to be defective, the PLC receives a signal from a second sensor 5. The inspector can then remove the defective or unqualified heat sink 8. The first sensor 2 sends a signal to the PLC, which then controls the first indicator 3, such as a buzzer alarm 302, to emit an alarm sound and a red flashing light to remind the inspector that the product has been missed or is defective. Therefore, since the signals transmitted to the PLC based on the position sensing of the first sensor 2 and the second sensor 5 are used, the controller 7 can control the second indicator 6 to indicate the corresponding process and the first indicator 3 to indicate whether all inspection items of the product are qualified. This is more intuitive and can effectively avoid missed inspections. At the same time, it no longer relies on manual judgment, but automatically determines whether the product is qualified through the transmission of sensing signals. This can effectively reduce misjudgments caused by human error and prevent defective products from flowing to the customer and causing adverse effects. Compared with coordinate measuring machine and other related inspection instruments, the above-mentioned combined inspection fixture has low equipment cost, is simple to use, convenient and fast, and the inspection time can be shortened to less than 30 seconds, achieving rapid inspection and reducing labor intensity.

[0039] Furthermore, such as Figure 2As shown, the positioning component 1 is provided with a positioning boss 101, which is used to cooperate with the hole / shape of the workpiece to be inspected, so as to realize the rapid positioning and removal of the workpiece to be inspected; for example, the heat sink hole 802 can cooperate with multiple positioning bosses 101, which can not only quickly position the heat sink 8, but also avoid the detection error caused by the displacement of the heat sink 8 during the inspection process. Compared with fixtures and other methods, the structure is simpler and the loading and unloading is more convenient.

[0040] Furthermore, such as Figure 2 As shown, the positioning member 1 is provided with one or more clearance grooves 102 that can cooperate with the corresponding push block 4. The clearance grooves 102 are used to make way for the push block 4 during the movement of the push block 4 towards the positioning member 1, and can adapt to the shape of the push block 4 to avoid affecting the positioning of the push block 4; for example, the positioning member 1 is provided with three clearance grooves 102 that make way for the first push block 401, the second push block 402 and the third push block 403 respectively. Figure 2 As shown, when in position, the three push blocks 4 can be placed in the clearance groove 102 to avoid affecting the movement of the push blocks 4.

[0041] Furthermore, the first sensor 2 and the second sensor 5 are proximity sensors or fiber optic sensors. Proximity sensors have the advantage of low cost, while fiber optic sensors have the advantage of requiring less installation space. For example, fiber optic sensors can be installed with a minimum hole diameter of 1mm, but the price of fiber optics is about 3 to 4 times that of proximity sensors. Therefore, proximity sensors and fiber optic sensors can be selected or used in combination in a combined fixture depending on the detection requirements.

[0042] Furthermore, it includes a push block 4 that can slide and engage with the positioning member 1 in the reciprocating direction of the push block 4, used to guide and support the sliding of the push block 4 with the positioning member 1, which can save components and make the structure more compact; for example: Figure 1 and 2 As shown, push block 401 and push block 402 are provided with through holes 14 that slide with both sides of positioning member 1. The upper end of the through hole 14 is higher than the first second sensor 501 and the second second sensor 502. Therefore, positioning member 1 can serve as a guide support member 9 for push block 401 and push block 402. Figure 2 As shown, when the tail handle 10 of push block 401 and push block 402 is pushed, push block 401 and push block 402 can move along the positioning member 1, which can avoid setting up additional support members to support push block 401 and push block 402, thus simplifying the structure.

[0043] Furthermore, such as Figure 1 and Figure 4As shown, it includes at least one support member 9 and at least one push block 4 that can slide with the support member 9 in the reciprocating direction of the push block 4. The push block 4 is provided with a sensor clearance groove 11, which can correspond to or make way for the second sensor 5. After the push block 4 moves relative to the positioning member 1, the position where the sensor clearance groove 11 corresponds to the second sensor 5 is used as the judgment position for the product to be tested to be unqualified in size, and the position where the sensor clearance groove 11 makes way for the second sensor 5 is used as the position where the push block 4 is in place, that is, the judgment position where the product to be tested to be qualified in size.

[0044] like Figure 1 and 2 As shown, two support members 9 with guide holes 901 are provided, such as... Figure 4 As shown, taking a sensor clearance groove 11 with a waist-shaped hole structure as an example, each of push block 403 and push block 404 has a sensor clearance groove 11 with a waist-shaped hole structure. The sensor clearance groove 11 is the area of ​​the detected defective position, such as... Figure 1 As shown, push block 403 and push block 404 slide in conjunction with guide hole 901 of support member 9. Initially, the second sensor 503 and the second sensor 504 each correspond to the front end of sensor clearance groove 11, as shown. Figure 5 As shown, if the dimensions of the heat sink 8 are not up to standard, then after the third push block 403 and the fourth push block 404 move towards the positioning part 1, they will interfere with the heat sink 8 and be blocked by the heat sink 8, unable to reach their designated positions. The third second sensor 503 and the fourth second sensor 504 will still correspond to the position of the sensor clearance slot 11 and will not be able to sense the third push block 403 or the fourth push block 404. This indicates that this process of the product is defective. Figure 6 As shown, if the size of the heat sink 8 is qualified, the third push block 403 and the fourth push block 404 can move into position on the positioning component 1. At this time, the sensor clearance slot 11 and the second sensor 5 make way, the third second sensor 503 can sense the third push block 403, and the fourth second sensor 504 can sense the fourth push block 404. Then, the corresponding signal is transmitted to the PLC, indicating that the product is qualified, has a simple structure, and can meet the support, movement and sensing settings of push blocks 4 in multiple directions.

[0045] Furthermore, the first sensor 2 and the second sensor 5 are disposed in the positioning member 1 or the support member 9, which can save on support components; for example: Figure 1 As shown, the positioning component 1 and the support component 9 are mounted on the mounting plate 13 of the PLC control box 12 by bolts. The first sensor 2, the first second sensor 501, and the second second sensor 502 are respectively installed in the positioning component 1, and the third second sensor 503 and the fourth second sensor 504 are installed on the corresponding support component 9.

[0046] Furthermore, such as Figure 7As shown, the push block 4 has limiting members at both ends, and an elastic support member 9 is provided between the support member 9 and the limiting member at the tail end of the push block 4. The elastic support member 9 supports the push block 4 to automatically reset. Taking push block 403 and push block 404 as examples, for example: Figure 7 As shown in Figure a, the limiting component is a boss 18 or a nut 19 shaped like the push block 4 itself, and the elastic support component 9 is a spring 20 sleeved on the push block 4. Figure 7 As shown in b, when pusher block 403 (number three) or pusher block 404 (number four) is pushed, nut 19 at the tail end can compress spring 20. After releasing the applied force, as shown in Figure b. Figure 7 As shown in Figure a, the spring 20 provides elastic return support, and the protrusion 18 at the head end can limit the support block to prevent the push block 4 from flying out, thus achieving automatic reset, which simplifies the detection operation and improves the detection efficiency.

[0047] Furthermore, the first indicator 3 or the second indicator 6 is a process light and / or a buzzer alarm 302. The controller 7 is used to control the operation of the first indicator 3 and the second indicator 6 according to the signals from the first sensor 2 and the second sensor 5. The color, number, brightness, etc., of the process light can be used to display whether the corresponding inspection process is qualified, and the voice, buzzer, color, flashing, etc., of the buzzer alarm 302 can be used to display whether the corresponding inspection process is qualified. Both can be used selectively or in combination; for example: Figure 1 As shown, the second indicator 604, numbered one to four, are process lights. When the corresponding process is qualified, the process light is lit. If a process is missed or the product is unqualified and the pusher 4 cannot push the qualified area, the second sensor 5 cannot sense the signal, and the corresponding process light will not light up. The first indicator 3 is the green light 301 and the buzzer alarm 302 on the PLC control box 12. If all processes of the product are qualified, the green light 301 is lit. If the product is missed or unqualified, the buzzer alarm 302 is controlled to emit an alarm sound and a red flashing reminder.

[0048] Furthermore, such as Figure 1 As shown, a reset button 15 is included. The reset button 15 is electrically connected to the controller 7. The reset button 15 is used to control the second indicator 6 to reset through the controller 7. For example, when the buzzer alarm 302 alarms, the inspector presses the reset button 15 to clear the alarm of the buzzer alarm 302 through the PLC.

[0049] Furthermore, such as Figure 1 As shown, it includes a counter 16, which is electrically connected to a controller 7. The controller 7 is used to control the counter 16 to count according to the signals of the first sensor 2 and the second sensor 5. For example, when all processes of the product are qualified, the PLC controls the counter 16 to increment by 1. The counter 16 counts the qualified products to facilitate the inspection personnel to perform statistical verification.

[0050] Furthermore, such as Figure 1 As shown, it includes a switch 17, which is electrically connected to the controller 7. The switch 17 is used to control the opening and closing of a circuit system including the controller 7, the first sensor 2, the second sensor 5, and the second indicator 6.

[0051] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of this utility model and are not intended to limit the scope of protection of this utility model. For example, the combined inspection fixture is not limited to the use of inspecting the linear dimensions and geometric tolerances of products. The number and position of the push block, the second sensor, and the second indicator can be set according to the inspection requirements. The combined inspection fixture is not limited to the use of inspecting heat sinks. The specific shape of the push block can be set according to the product characteristics and structure. All equivalent embodiments or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A combination gauge for preventing missed inspections of dimensions, characterized in that, It includes a positioning component (1), a first sensor (2), a controller (7), a first indicator (3), several sets of push blocks (4), a second sensor (5), and a second indicator (6). The first sensor (2) is used to detect the positioning position of the positioning component (1). The first sensor (2), the second sensor (5), the first indicator (3), and the second indicator (6) are all electrically connected to the controller (7). The push block (4) can reciprocate relative to the positioning component (1). The second sensor (5) is used to detect the position of the push block (4) moving towards the positioning component (1).

2. The anti-missed inspection size combination fixture according to claim 1, characterized in that, The positioning component (1) is provided with a positioning boss (101).

3. The anti-missed inspection size combination fixture according to claim 1, characterized in that, The positioning element (1) is provided with one or more relief grooves (102) that can cooperate with the corresponding push block (4).

4. The anti-missed inspection size combination fixture according to claim 1, characterized in that, The first sensor (2) and the second sensor (5) are proximity sensors or fiber optic sensors.

5. The anti-missed inspection dimension combination fixture according to claim 1, characterized in that, It includes a push block (4) that can slide and engage with the positioning member (1) in the reciprocating direction of the push block (4).

6. The anti-missed inspection size combination fixture according to claim 1, characterized in that, It includes at least one support member (9), and at least one push block (4) is slidably engaged with the support member (9) in the reciprocating direction of the push block (4). The push block (4) is provided with a sensor clearance groove (11), which is able to correspond to or make way for the second sensor (5).

7. The anti-missed inspection dimension combination fixture according to claim 6, characterized in that, The push block (4) has limiting members at both ends, and an elastic support member (9) is provided between the support member (9) and the limiting member at the end of the push block (4).

8. The anti-missed inspection size combination fixture according to claim 1, characterized in that, The first indicator (3) or the second indicator (6) is a process light and / or a buzzer alarm (302).

9. The anti-missed inspection dimension combination fixture according to claim 1, characterized in that, Includes a reset button (15), which is electrically connected to the controller (7).

10. The anti-missed inspection dimensional combination fixture according to any one of claims 1 to 9, characterized in that, Includes a counter (16), which is electrically connected to the controller (7).

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