Threaded hole automatic detection device

Abstract

The invention discloses an automatic threaded hole detection device which is used for detecting a to-be-detected threaded hole in a product and comprises a base plate, a fixing plate arranged on the upper surface of the base plate and a carrier plate installed in the center of the upper surface of the fixing plate, and at least one bending part extending downwards is arranged on the edges of at least two side edges and at least one corner of the product. Each bending part is provided with a to-be-measured tooth hole, the outer side of each to-be-measured tooth hole is correspondingly provided with a supporting seat, a conductive probe is slidably installed in the supporting seat, and a conductive sheet is arranged between each limiting seat and the supporting seat; and one end, embedded into the blind hole, of the conductive probe is provided with a flange part which is outward along the radial direction. According to the invention, simultaneous automatic detection of a plurality of tooth holes in different directions of the product can be realized, damage of the conductive probe to the product in the test process can be avoided, the detection efficiency and convenience are greatly improved while the detection precision is ensured, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to an automatic threaded hole detection device, belonging to the technical field of threaded hole detection. Background Art

[0002] Tapping refers to the process of threading the inner wall of a hole, which can turn a round hole into a threaded hole. This hole is called a threaded hole. After the product is produced, the threaded hole needs to be inspected with corresponding testing tools to screen out unqualified products.

[0003] Most of the existing tooth hole detection methods rely on manual operation of tooth gauges to detect tooth holes. Manual operation can usually only detect one tooth hole at a time. When faced with products with multiple holes in multiple directions, it takes a lot of manpower and time to detect multiple holes in turn. The detection efficiency is low, and manual detection can cause damage to the product if you are not careful. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic threaded hole detection device, which can not only realize simultaneous automatic detection of multiple thread holes in different directions of a product, but also avoid damage to the product by a conductive probe during the test process, thereby greatly improving the efficiency and convenience of detection while ensuring detection accuracy and reducing costs.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an automatic detection device for threaded holes, used for detecting the thread holes to be tested on the product, comprising: a base plate, a fixing plate arranged on the upper surface of the base plate, and a carrier plate installed on the center of the upper surface of the fixing plate, at least two side edges and at least one corner of the product are provided with at least one bending portion extending downward, each of the bending portions is provided with a thread hole to be tested, the lower surface of the main body of the product is in contact with the upper surface of the carrier plate, at least one corner of the carrier plate is provided as a plane that can be fitted with the corresponding bending portion, and each of the bending portions is located on the outer side of the side surface of the carrier plate; A support seat is correspondingly provided on the outer side of each of the tooth holes to be tested, a conductive probe is slidably installed in the support seat, one end of the horizontally arranged conductive probe extends outward from the surface of the support seat on the side facing the tooth hole to be tested, a limit seat is installed on the surface of the support seat opposite to the side of the tooth hole to be tested, a horizontally extending blind hole is provided on the surface of the limit seat facing the support seat, the other end of the conductive probe passes through the support seat and extends into the blind hole, a spring horizontally arranged in the blind hole is in compression contact with the end face of the conductive probe embedded in the blind hole, the support seat is connected to a push block located below it, and several support seats located on the same side of the fixed plate are connected to the same push block, each of the push blocks is respectively connected to a cylinder arranged on the outer side of the side surface of the fixed plate and can approach or move away from the product along with the piston rod of the cylinder; A conductive sheet is arranged between each of the limit seats and the support seat, and a avoidance through hole is provided on the conductive sheet for the conductive probe to pass through and is provided with a gap with the outer surface of the conductive probe. One end of the conductive probe embedded in the blind hole has a flange portion radially facing outward, and the outer diameter of the flange portion is larger than the inner diameter of the avoidance through hole, so that the flange portion on the conductive probe can contact the surface of the conductive sheet, and the flange portion and the conductive sheet of the conductive probe are each electrically connected to an indicator light installed on the upper surface of the substrate through a wire, and a plurality of avoidance grooves for one end of the conductive probe to be embedded are correspondingly provided on the side surface of the carrier board, and the bent portion of the product can contact the side surfaces of the carrier board on both sides of the avoidance groove.

[0006] The further improved scheme in the above technical scheme is as follows: 1. In the above scheme, a mounting hole is provided at the edge of the fixing plate close to one side of the cylinder, and the push block can be movably arranged in the corresponding mounting hole, and the two opposite side surfaces on each push block are respectively in sliding contact with the inner wall of the mounting hole, and one of the other two opposite side surfaces is spaced from the inner wall of the mounting hole.

[0007] 2. In the above scheme, a plurality of arc grooves are provided on the two side surfaces of the push block facing and opposite to the cylinder, and a cylindrical elastic block is embedded and installed in each of the arc grooves spaced apart along the length direction of the push block, and the other side surface of the cylindrical elastic block embedded in the arc groove protrudes from the side surface of the push block.

[0008] 3. In the above solution, the cylindrical elastic block is a rubber block or a silicone block.

[0009] 4. In the above solution, a guide block is installed on the upper surface of the fixed plate and on both sides of the push block.

[0010] 5. In the above solution, the support seat is provided with a mounting through hole for the conductive probe to pass through, and the inner wall of the mounting through hole is in clearance fit with the outer surface of the conductive probe.

[0011] 6. In the above solution, a plurality of positioning pins are arranged at intervals on the upper surface of the carrier plate, and positioning holes for the positioning pins to be embedded are provided on the product.

[0012] 7. In the above solution, each of the plurality of indicator lights is arranged close to a corresponding conductive probe.

[0013] 8. In the above solution, a plurality of limiting columns are arranged on the upper surface of the fixing plate and located outside the carrier plate, and each of the limiting columns is arranged close to the carrier plate.

[0014] 9. In the above solution, the support seat and the push block are connected by at least two groups of pins and pin holes.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The automatic detection device for threaded holes of the present invention has a support seat correspondingly arranged on the outer side of each thread hole to be tested, a conductive probe is slidably installed in the support seat, one end of the horizontally arranged conductive probe extends outward from the surface of the support seat on the side facing the thread hole to be tested, a limit seat is installed on the surface of the support seat opposite to the thread hole to be tested, a horizontally extending blind hole is provided on the surface of the limit seat facing the support seat, the other end of the conductive probe passes through the support seat and extends into the blind hole, a spring horizontally arranged in the blind hole is pressed and contacted with the end face of the conductive probe embedded in the blind hole, and the support seat and The push block located below it is connected, and several support seats located on the same side of the fixed plate are all connected to the same push block. Each push block is connected to a cylinder arranged on the outer side of the side surface of the fixed plate and can move closer to or away from the product with the piston rod of the cylinder. A conductive sheet is arranged between each limit seat and the support seat. A avoidance through hole is opened on the conductive sheet for the conductive probe to pass through and is arranged with a gap with the outer surface of the conductive probe. One end of the conductive probe embedded in the blind hole has a flange portion radially outward, and the outer diameter of the flange portion is larger than the inner diameter of the avoidance through hole, so that the flange portion on the conductive probe can contact the conductive sheet surface, and the conductive probe The flange and the conductive sheet are each electrically connected to an indicator light installed on the upper surface of the substrate through a wire, and through multiple cylinders, each cylinder drives the contraction of at least one push block to realize the forward and backward movement of multiple conductive probes, thereby realizing the connection and disconnection between the conductive probes and the corresponding conductive sheets and the lighting and extinguishing of the corresponding indicator lights, thereby completing the simultaneous automatic detection of multiple tooth holes in different directions of the product, while ensuring the detection accuracy, greatly improving the efficiency and convenience of the detection, and reducing the cost; further, the product is provided with at least one downwardly extending indicator light at the edges of at least two sides and at least one corner. The invention discloses a product of a testing machine, wherein the testing machine has a plurality of bent parts, each of which is provided with a tooth hole to be tested, the lower surface of the main body of the product contacts the upper surface of the carrier plate, at least one corner of the carrier plate is provided with a plane which can be fitted with the corresponding bent part, each bent part is respectively located on the outer side of the side surface of the carrier plate, and a plurality of avoidance grooves for one end of the conductive measuring needle to be embedded are correspondingly provided on the side surface of the carrier plate, the bent part of the product contacts the side surface of the carrier plate on both sides of the avoidance groove, and reverse support can be provided for the relatively weak bent part of the product when the conductive measuring needle contacts the product, thereby preventing the conductive measuring needle from damaging the product during the test.

[0016] 2. The threaded hole automatic detection device of the present invention has a mounting hole at the edge of the fixed plate close to one side of the cylinder, and the push block can be movably arranged in the corresponding mounting hole. The two opposite side surfaces on each push block are respectively in sliding contact with the inner wall of the mounting hole, and one of the other two opposite side surfaces is arranged at intervals from the inner wall of the mounting hole, so as to further improve the position accuracy of the push block during long-term reciprocating movement, thereby ensuring the position accuracy and test accuracy of the conductive probe and the consistency and stability of the test results; further, the push block is provided with a plurality of arc grooves on the two side surfaces facing and opposite to the cylinder, and a cylindrical elastic block is respectively embedded and installed in the plurality of arc grooves arranged at intervals along the length direction of the push block, and the other side surface of the cylindrical elastic block embedded in the arc groove on one side protrudes from the side surface of the push block, providing a buffer before the end point of the reciprocating travel of the push block, avoiding the conductive probe from shaking due to the instantaneous excessive force, and in particular, providing a force buffer before the conductive probe is about to make hard contact with the product, avoiding damage to the product caused by the instantaneous excessive force of the conductive probe, and avoiding adverse damage to the product caused by the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a schematic diagram of the overall structure of the threaded hole automatic detection device of the present invention; Attached Figure 2 For attachment Figure 1 The enlarged schematic diagram of point A in the middle; Attached Figure 3 For attachment Figure 1 Schematic diagram of the cross section along BB; Attached Figure 4 For attachment Figure 3 The enlarged schematic diagram of the center C; Attached Figure 5 For attachment Figure 4 The enlarged schematic diagram of point D in the middle; Attached Figure 6 For attachment Figure 4 The enlarged schematic diagram of point E in the middle; Attached Figure 7 It is a schematic diagram of the partial structure of the automatic detection device for threaded holes of the present invention.

[0018] In the above drawings: 100, product; 101, tooth hole to be measured; 102, bending part; 1, substrate; 2, fixing plate; 201, mounting hole; 3, cylinder; 4, push block; 5, support seat; 61, pin; 62, pin hole; 7, conductive measuring needle; 8, flange; 9, limit seat; 10, blind hole; 11, spring; 12, conductive sheet; 121, avoidance through hole; 13, wire; 14, indicator light; 15, mounting groove; 16, arc groove; 17, cylindrical elastic block; 18, guide block; 19, mounting through hole; 20, carrier plate; 21, positioning pin; 22, positioning hole; 23, limit column; 24, avoidance groove. Implementation

[0019] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0020] Embodiment 1: A threaded hole automatic detection device, used for detecting a threaded hole 101 to be tested on a product 100, comprising: a substrate 1, a fixing plate 2 arranged on the upper surface of the substrate 1, and a carrier plate 20 installed in the center of the upper surface of the fixing plate 2, at least two side edges and at least one corner of the product 100 are provided with at least one bending portion 102 extending downward, each of the bending portions 102 is provided with a threaded hole 101 to be tested, the lower surface of the main body of the product 100 is in contact with the upper surface of the carrier plate 20, at least one corner of the carrier plate 20 is provided as a plane that can be fitted with the corresponding bending portion 102, and each of the bending portions 102 is located on the outer side of the side surface of the carrier plate 20; A support seat 5 is correspondingly provided on the outer side of each of the tooth holes 101 to be tested, and a conductive probe 7 is slidably installed in the support seat 5. One end of the conductive probe 7 arranged horizontally extends outward from the surface of the support seat 5 on the side facing the tooth hole 101 to be tested, and a limit seat 9 is installed on the surface of the support seat 5 opposite to the tooth hole 101 to be tested. A horizontally extending blind hole 10 is provided on the surface of the limit seat 9 facing the support seat 5, and the other end of the conductive probe 7 passes through the support seat 5 and extends into the blind hole 10. A spring 11 arranged horizontally in the blind hole 10 is in compression contact with the end face of the conductive probe 7 embedded in the blind hole 10. The support seat 5 is connected to the push block 4 located below it, and several support seats 5 located on the same side of the fixed plate 2 are connected to the same push block 4. Each of the push blocks 4 is respectively connected to the cylinder 3 arranged on the outer side of the side surface of the fixed plate 2 and can approach or move away from the product 100 with the piston rod of the cylinder 3; A conductive sheet 12 is provided between each of the limit seats 9 and the support seat 5, and a through hole 121 is provided on the conductive sheet 12 for the conductive probe 7 to pass through and is provided with a gap with the outer surface of the conductive probe 7. One end of the conductive probe 7 embedded in the blind hole 10 has a flange portion 8 radially outward, and the outer diameter of the flange portion 8 is larger than the inner diameter of the through hole 121, so that the flange portion 8 on the conductive probe 7 can be in surface contact with the conductive sheet 12, and the flange portion 8 and the conductive sheet 12 of the conductive probe 7 are each electrically connected to an indicator light 14 installed on the upper surface of the substrate 1 through a wire 13, and a plurality of avoidance grooves 24 for one end of the conductive probe 7 to be embedded are correspondingly provided on the side surface of the carrier 20, and the bending portion 102 of the product 100 is in surface contact with the side surface of the carrier 20 on both sides of the avoidance groove 24; In the initial state, the piston rod of the cylinder is in a retracted state, and each conductive probe is away from the corresponding tooth hole to be tested. Under the action of the spring in the blind hole, the flange on each conductive probe contacts the corresponding conductive sheet surface, so that the electrical circuit composed of the conductive probe, the conductive sheet and the indicator light is turned on, and the corresponding indicator light is turned on. At this time, each conductive probe extends outward from the surface of the support seat on the side facing the tooth hole to be tested to the farthest point; By contracting the cylinder and coordinating with the identification indicator light to change from the on state to the off state, it is possible to realize automatic detection of multiple tooth holes in different directions of the product at the same time, which greatly improves the efficiency and convenience of detection while ensuring the detection accuracy and reducing the cost.

[0021] The fixing plate 2 has an installation hole 201 at its edge near the cylinder 3, and the push block 4 can be movably arranged in the corresponding installation hole 201. The two opposite side surfaces on each push block 4 are in sliding contact with the inner wall of the installation hole 201, and one of the other two opposite side surfaces is spaced apart from the inner wall of the installation hole 201.

[0022] The push block 4 is provided with a plurality of arc grooves 16 on the two side surfaces facing and facing away from the cylinder 3. A cylindrical elastic block 17 is respectively embedded and installed in the plurality of arc grooves 16 arranged at intervals along the length direction of the push block 4. The cylindrical elastic block 17 with one side embedded in the arc groove 16 protrudes from the side surface of the push block 4 on the other side surface. In the initial state, the piston rod of the cylinder is in a retracted state, at which time the cylindrical elastic block on the push block fits against the inner wall of the mounting hole close to the cylinder side; Before the conductive probe is about to contact the qualified product, the cylindrical elastic block installed on the push block contacts the inner wall of the mounting hole away from the cylinder and buffers the force generated by the cylinder. The conductive probe then continues to move a smaller stroke toward the product with the thread hole to be tested.

[0023] The cylindrical elastic block 17 is a rubber block.

[0024] A guide block 18 is installed on the upper surface of the fixing plate 2 and on both sides of the push block 4 to ensure the position accuracy of the support seat driving the test probe to move back and forth during long-term use, while ensuring the test accuracy and improving the consistency and stability of the test results.

[0025] The support seat 5 is provided with a mounting through hole 19 for the conductive probe 7 to pass through. The inner wall of the mounting through hole 19 is clearance-matched with the outer surface of the conductive probe 7, providing a space for the conductive probe to be adaptively adjusted, thereby ensuring that the conductive probe can maintain coaxiality with the tooth hole to be tested each time it is embedded in the tooth hole to be tested, thereby improving the test accuracy and avoiding damage to the tooth hole to be tested by the conductive probe.

[0026] A plurality of positioning pins 21 are disposed at intervals on the upper surface of the carrier plate 20 , and positioning holes 22 for the positioning pins 21 to be embedded are disposed on the product 100 .

[0027] The plurality of indicator lights 14 are each disposed close to a corresponding conductive probe 7 .

[0028] A plurality of limiting posts 23 are disposed on the upper surface of the fixing plate 2 and outside the carrier plate 20 , and each of the limiting posts 23 is disposed close to the carrier plate 20 .

[0029] The support seat 5 and the push block 4 are connected by at least two groups of pins 61 and pin holes 62 .

[0030] Embodiment 2: A threaded hole automatic detection device, used for detecting a threaded hole 101 to be tested on a product 100, comprising: a substrate 1, a fixing plate 2 arranged on the upper surface of the substrate 1, and a carrier plate 20 installed in the center of the upper surface of the fixing plate 2, at least two side edges and at least one corner of the product 100 are provided with at least one downwardly extending bending portion 102, each of the bending portions 102 is provided with a threaded hole 101 to be tested, the lower surface of the main body of the product 100 is in contact with the upper surface of the carrier plate 20, at least one corner of the carrier plate 20 is provided as a plane that can be fitted with the corresponding bending portion 102, and each of the bending portions 102 is located on the outer side of the side surface of the carrier plate 20; A support seat 5 is correspondingly provided on the outer side of each of the tooth holes 101 to be tested, and a conductive probe 7 is slidably installed in the support seat 5. One end of the conductive probe 7 arranged horizontally extends outward from the surface of the support seat 5 on the side facing the tooth hole 101 to be tested, and a limit seat 9 is installed on the surface of the support seat 5 opposite to the tooth hole 101 to be tested. A horizontally extending blind hole 10 is provided on the surface of the limit seat 9 facing the support seat 5, and the other end of the conductive probe 7 passes through the support seat 5 and extends into the blind hole 10. A spring 11 arranged horizontally in the blind hole 10 is in compression contact with the end face of the conductive probe 7 embedded in the blind hole 10. The support seat 5 is connected to the push block 4 located below it, and several support seats 5 located on the same side of the fixed plate 2 are connected to the same push block 4. Each of the push blocks 4 is respectively connected to the cylinder 3 arranged on the outer side of the side surface of the fixed plate 2 and can approach or move away from the product 100 with the piston rod of the cylinder 3; A conductive sheet 12 is provided between each of the limit seats 9 and the support seat 5, and a through hole 121 is provided on the conductive sheet 12 for the conductive probe 7 to pass through and is provided with a gap with the outer surface of the conductive probe 7. One end of the conductive probe 7 embedded in the blind hole 10 has a flange portion 8 radially outward, and the outer diameter of the flange portion 8 is larger than the inner diameter of the through hole 121, so that the flange portion 8 on the conductive probe 7 can be in surface contact with the conductive sheet 12, and the flange portion 8 and the conductive sheet 12 of the conductive probe 7 are each electrically connected to an indicator light 14 installed on the upper surface of the substrate 1 through a wire 13, and a plurality of avoidance grooves 24 for one end of the conductive probe 7 to be embedded are correspondingly provided on the side surface of the carrier 20, and the bending portion 102 of the product 100 is in surface contact with the side surface of the carrier 20 on both sides of the avoidance groove 24; The piston rod of the air cylinder is placed in an extended state and the push block is pushed to move toward the product with the thread hole to be tested. At the same time, the support seat and each conductive probe installed in the support seat move toward the corresponding thread hole to be tested; If the conductive probe can pass through the hole to be tested, the corresponding indicator light remains on, indicating that the hole to be tested is unqualified; If the conductive probe cannot pass through the tooth hole to be tested, the conductive probe is subjected to a reaction force from the product with the tooth hole to be tested, causing the conductive probe to move toward the spring to squeeze the spring and create a gap between the flange and the conductive sheet, disconnecting the electrical circuit formed by the conductive probe, the conductive sheet and the indicator light, and the corresponding indicator light goes out, indicating that the tooth hole to be tested is qualified. By utilizing the principle of safe weak-current series closed-loop circuit, multi-hole synchronous rapid detection can be achieved at a relatively low cost, saving manpower and improving efficiency.

[0031] The fixing plate 2 has an installation hole 201 at its edge near the cylinder 3, and the push block 4 can be movably arranged in the corresponding installation hole 201. The two opposite side surfaces on each push block 4 are in sliding contact with the inner wall of the installation hole 201, and one of the other two opposite side surfaces is spaced apart from the inner wall of the installation hole 201.

[0032] A plurality of positioning pins 21 are disposed at intervals on the upper surface of the carrier plate 20 , and positioning holes 22 for the positioning pins 21 to be embedded are disposed on the product 100 .

[0033] A plurality of limit posts 23 are disposed on the upper surface of the fixing plate 2 and outside the carrier plate 20, and each of the limit posts 23 is disposed close to the carrier plate 20. The support seat 5 and the push block 4 are connected by at least two groups of pins 61 and pin holes 62.

[0034] The support seat 5 and the push block 4 are both provided with pin holes 62 which are interconnected in the vertical direction. Both ends of the pin 61 are respectively embedded in the pin holes 62 provided on the support seat 5 and the push block 4 .

[0035] The above-mentioned blind hole 10 is coaxially arranged with the conductive measuring needle 7. When in use, the product with multiple tooth holes to be tested is first installed on the carrier plate, and the positioning pins on the carrier plate are embedded in the positioning holes on the product to achieve positioning of the product, so that each tooth hole to be tested is coaxially arranged with the corresponding conductive measuring needle.

[0036] The limiting seat 9 is fixedly mounted on the supporting seat 5 by at least two bolts.

[0037] A mounting groove 15 for the conductive sheet 12 to be embedded is formed on the surface of the supporting seat 5 facing the limiting seat 9 .

[0038] The surface of the conductive probe 7 away from the spring 11 is a conical surface.

[0039] The supporting seat 5 and the limiting seat 9 are both insulating seats, and specifically PEK material can be selected.

[0040] The conductive sheet 12 is a copper sheet.

[0041] The working principle of the present invention is as follows: When in use, first install the product with multiple thread holes to be tested on the carrier plate, and make the positioning pins on the carrier plate embed into the positioning holes on the product to achieve the positioning of the product, so that each thread hole to be tested is coaxially arranged with the corresponding conductive measuring needle; In the initial state, the piston rod of the cylinder is in a retracted state. At this time, the cylindrical elastic block on the push block fits with the inner wall of the mounting hole close to the cylinder side, and each conductive probe is away from the corresponding tooth hole to be tested. Under the action of the spring in the blind hole, the flange part on each conductive probe contacts the corresponding conductive sheet surface, so that the electrical circuit composed of the conductive probe, the conductive sheet and the indicator light is turned on, and the corresponding indicator light is on. At this time, each conductive probe extends outward from the surface of the support seat on the side facing the tooth hole to be tested to the farthest point; The piston rod of the air cylinder is placed in an extended state and the push block is pushed to move toward the product with the thread hole to be tested. At the same time, the support seat and each conductive probe installed in the support seat move toward the corresponding thread hole to be tested; Before the conductive probe is about to contact the qualified product, the cylindrical elastic block installed on the push block contacts the inner wall of the mounting hole away from the cylinder and buffers the force generated by the cylinder. Then the conductive probe continues to move a small stroke toward the product with the thread hole to be tested. If the conductive probe can pass through the hole to be tested, the corresponding indicator light remains on, indicating that the hole to be tested is unqualified; If the conductive probe cannot pass through the thread hole to be tested, the conductive probe is subjected to a reaction force from the product with the thread hole to be tested, so that the conductive probe moves toward the spring to squeeze the spring and a gap is generated between the flange portion on the conductive probe and the conductive sheet, so that the electrical circuit composed of the conductive probe, the conductive sheet and the indicator light is disconnected, and the corresponding indicator light goes out, indicating that the thread hole to be tested is qualified; Therefore, it is only necessary to contract the cylinder and identify whether the indicator light changes from the on state to the off state, so as to realize the simultaneous automatic detection of multiple tooth holes in different directions of the product, which greatly improves the efficiency and convenience of detection while ensuring the detection accuracy and reducing the cost.

[0042] When the above-mentioned threaded hole automatic detection device is used, it uses multiple cylinders, each cylinder drives the contraction of at least one push block to realize the forward and backward movement of multiple conductive probes, thereby realizing the connection and disconnection between the conductive probe and the corresponding conductive sheet and the lighting and extinguishing of the corresponding indicator light, so as to complete the simultaneous automatic detection of multiple thread holes in different directions of the product, while ensuring the detection accuracy, greatly improving the efficiency and convenience of the detection, reducing the cost, and providing reverse support for the relatively weak bending part of the product when the conductive probe contacts the product, avoiding the conductive probe from damaging the product during the test; in addition, it further improves the position accuracy of the push block during long-term reciprocating movement, thereby ensuring the position accuracy and test accuracy of the conductive probe and the consistency and stability of the test results, and provides a buffer before the end point of the reciprocating travel of the push block, avoiding the conductive probe from shaking due to excessive force at the moment, especially providing a force buffer before the conductive probe is about to come into hard contact with the product, avoiding damage to the product caused by excessive force at the moment of the conductive probe, and avoiding adverse damage to the product caused by the test.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A threaded hole automatic detection device, used for detecting a threaded hole (101) to be detected on a product (100), comprising: A substrate (1), a fixing plate (2) arranged on the upper surface of the substrate (1), and a carrier plate (20) installed in the center of the upper surface of the fixing plate (2), characterized in that: at least two side edges and at least one corner of the product (100) are each provided with at least one bending portion (102) extending downward, each bending portion (102) is provided with a tooth hole (101) to be tested, the lower surface of the main body of the product (100) is in contact with the upper surface of the carrier plate (20), at least one corner of the carrier plate (20) is provided as a plane that can be fitted with the corresponding bending portion (102), and each bending portion (102) is located on the outer side of the side surface of the carrier plate (20); A support seat (5) is correspondingly arranged on the outer side of each of the tooth holes (101) to be tested, and a conductive probe (7) is slidably mounted in the support seat (5). One end of the conductive probe (7) is horizontally mounted and extends outward from the surface of the support seat (5) on the side facing the tooth hole (101) to be tested. A limit seat (9) is mounted on the surface of the support seat (5) opposite to the tooth hole (101) to be tested, and a horizontally extending blind hole (10) is formed on the surface of the limit seat (9) facing the support seat (5). The other end of the conductive probe (7) is disposed on the surface of the support seat (5) and extends toward the tooth hole (101). The end of the conductive probe (7) passes through the support seat (5) and extends into the blind hole (10); a spring (11) horizontally arranged in the blind hole (10) is in compression contact with the end surface of one end of the conductive probe (7) embedded in the blind hole (10); the support seat (5) is connected to a push block (4) located below it, and a plurality of support seats (5) located on the same side of the fixed plate (2) are connected to the same push block (4); each of the push blocks (4) is connected to a cylinder (3) arranged on the outer side of the side surface of the fixed plate (2) and can move closer to or farther away from the product (100) along with the piston rod of the cylinder (3); A conductive sheet (12) is provided between each of the limit seats (9) and the support seat (5), and a position avoidance through hole (121) is provided on the conductive sheet (12) for the conductive probe (7) to pass through and is provided with a gap with the outer surface of the conductive probe (7). One end of the conductive probe (7) embedded in the blind hole (10) has a flange portion (8) facing radially outward, and the outer diameter of the flange portion (8) is larger than the inner diameter of the position avoidance through hole (121), so that the flange portion (8) on the conductive probe (7) is 8) can be in surface contact with the conductive sheet (12), the flange portion (8) of the conductive probe (7) and the conductive sheet (12) are each electrically connected to an indicator light (14) mounted on the upper surface of the substrate (1) through a wire (13), a plurality of avoidance grooves (24) are correspondingly provided on the side surface of the carrier (20) for one end of the conductive probe (7) to be embedded, and the bent portion (102) of the product (100) is in surface contact with the side surface of the carrier (20) on both sides of the avoidance grooves (24).

2. The threaded hole automatic detection device according to claim 1, characterized in that: The fixing plate (2) is provided with a mounting hole (201) at an edge of a side close to the cylinder (3), and the push block (4) is movably arranged in the corresponding mounting hole (201), and two opposite side surfaces on each push block (4) are respectively in sliding contact with the inner wall of the mounting hole (201), and one of the other two opposite side surfaces is spaced from the inner wall of the mounting hole (201).

3. The threaded hole automatic detection device according to claim 2, characterized in that: The push block (4) is provided with a plurality of arc grooves (16) on two side surfaces facing and opposite to the cylinder (3), and a cylindrical elastic block (17) is respectively embedded and installed in the plurality of arc grooves (16) arranged at intervals along the length direction of the push block (4), and the other side surface of the cylindrical elastic block (17) embedded in the arc groove (16) on one side protrudes from the side surface of the push block (4).

4. The threaded hole automatic detection device according to claim 3 is characterized in that: The cylindrical elastic block (17) is a rubber block or a silicone block.

5. The threaded hole automatic detection device according to claim 1, characterized in that: A guide block (18) is installed on the upper surface of the fixing plate (2) and on both sides of the push block (4).

6. The threaded hole automatic detection device according to claim 1, characterized in that: The support seat (5) is provided with a mounting through hole (19) for the conductive probe (7) to pass through, and the inner wall of the mounting through hole (19) is clearance-matched with the outer surface of the conductive probe (7).

7. The threaded hole automatic detection device according to claim 1, characterized in that: A plurality of positioning pins (21) are arranged at intervals on the upper surface of the carrier plate (20), and positioning holes (22) for the positioning pins (21) to be embedded are arranged on the product (100).

8. The threaded hole automatic detection device according to claim 1, characterized in that: The plurality of indicator lights (14) are each arranged close to a corresponding conductive probe (7).

9. The threaded hole automatic detection device according to claim 1, characterized in that: A plurality of limiting columns (23) are arranged on the upper surface of the fixing plate (2) and located outside the carrier plate (20), and each of the limiting columns (23) is arranged close to the carrier plate (20).

10. The threaded hole automatic detection device according to claim 1, characterized in that: The support seat (5) and the push block (4) are connected by at least two groups of pins (61) and pin holes (62).

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