Steel ball eddy current automatic testing machine and testing method thereof

Abstract

The invention discloses a steel ball eddy current automatic detection machine and a detection method thereof, and relates to the field of eddy current detection equipment. The technical scheme thereof mainly includes: a frame and a material receiving platform arranged below the frame, and also includes a rotating material distribution mechanism, a feeding mechanism and an eddy current detection mechanism arranged on the frame. The rotating material distribution mechanism includes a support plate fixed on the frame, a rotating plate rotatably connected to the support plate, and a driving assembly for driving the rotating plate to rotate. A plurality of steel ball sorting slots with different diameters are radially arranged on the rotating plate, a plurality of steel ball drop slots are arranged on the support plate, and the feeding mechanism and the eddy current detection mechanism can move radially along the support plate respectively, wherein a plug for blocking the steel ball sorting slot in a non-sorting state can be detachably connected. The invention does not need to drive the steel ball to rotate itself, and the steel ball can complete the detection by passing through the eddy current detection mechanism, and has the advantages of high detection accuracy and efficiency, and can also be applied to the detection of steel balls with different diameters.

Description

Technical Field

[0001] The invention relates to the field of eddy current detection equipment, and more specifically, to a steel ball eddy current automatic detection machine and a detection method thereof. Background Art

[0002] During the production process, an eddy current detection device is required to detect the surface of the steel ball. However, the existing eddy current detection device can only detect steel balls with a single diameter and is not very applicable.

[0003] In response to the above problems, a Chinese patent with publication number CN214011124U discloses a steel ball eddy current detection machine, the technical solution of which is as follows: it includes an eddy current detection device, the eddy current detection device includes a support wheel mechanism, a first drive shaft device, a second drive shaft device and a support plate frame, the first drive shaft device is installed at the bottom of the support plate frame and is set obliquely upward, the second drive shaft device is installed at the top of the support plate frame and is set obliquely downward, the rotating shaft end of the first drive shaft device and the rotating shaft end of the second drive shaft device are respectively provided with alloy wheels, the two alloy wheels and the support wheel mechanism drag the steel ball, the rotating shaft of the first drive shaft device and the rotating shaft of the second drive shaft device are arranged at right angles, and the rotating shaft speed of the first drive shaft device is inconsistent with the rotating shaft speed of the second drive shaft device. Compared with the existing technology, this solution is more stable in operation, has the functions of improving detection accuracy, reducing cost loss, and preparing the prerequisites for accurate automated detection.

[0004] Although the above method can realize the detection of steel balls of different diameters, it is necessary to set the corresponding parameters on the display screen through the operation box to realize the detection of steel balls of different diameters. This makes the structure of the detection machine more complicated and the production cost higher. In addition, the speed difference generated by the two drive shafts is used to drive the steel ball to generate a certain rotation speed in the latitude direction, thereby forming a scanning expansion line to achieve the purpose of scanning and detecting the entire surface of the steel ball. In this way, on the one hand, the steel ball is easy to slip, resulting in low detection accuracy, and on the other hand, the detection efficiency is low.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a steel ball eddy current automatic testing machine, which solves the shortcomings of the existing steel ball eddy current testing machines, such as low testing efficiency and accuracy.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: a steel ball eddy current automatic detection machine, comprising a frame and a material receiving platform arranged under the frame, and also comprising a rotating material distribution mechanism arranged on the frame, a feeding mechanism for feeding the rotating material distribution mechanism, and an eddy current detection mechanism arranged between the rotating material distribution mechanism and the material receiving platform. The rotating material distribution mechanism comprises a support plate fixed on the frame, a rotating plate rotatably connected to the support plate, and a driving component for driving the rotating plate to rotate. A plurality of steel ball sorting troughs of different diameters are radially arranged on the rotating plate, and a plurality of steel ball dropping troughs are arranged on the support plate. The steel ball dropping troughs correspond to the steel ball sorting troughs in size, quantity and position. The feeding mechanism and the eddy current detection mechanism can be moved along the radial direction of the support plate respectively to align with the steel ball dropping troughs of corresponding diameters, wherein a plug for sealing the steel ball sorting trough in a non-sorting state is detachably connected to the steel ball sorting trough.

[0008] In one of the embodiments, the feeding mechanism includes a first slide plate slidably connected to the frame through a first slide rail pair, a first locking knob for locking the first slide plate and the first slide rail pair, a material rack fixed on the first slide plate, and a hopper fixed on the material rack, a discharge port is provided at the bottom of the hopper, a plane where the discharge port is located is in contact with the gap of the rotating plate, and the contact gap is smaller than the diameter of the steel ball sorting trough with the smallest diameter, and a steel ball scraper is provided on the hopper at the inner side of the discharge port.

[0009] In one embodiment, the eddy current detection mechanism includes a second slide plate slidably connected to the frame through a second slide rail pair, a second locking knob for locking the second slide plate with the second slide rail pair, an annular eddy current meter fixed on the second slide plate, and a pipe connected to the annular eddy current meter, the annular eddy current meter has a detection channel for steel balls to pass through and perform eddy current detection, the end of the pipe away from the annular eddy current meter is connected to a discharge trough, the second slide plate is provided with a bracket for supporting the pipe and the discharge trough, the bracket is provided with a valve that can open and close the pipe between the pipe and the discharge trough, the end of the discharge trough away from the pipe is branched to form a good product drop trough and a defective product drop trough, the discharge trough is provided with a pendulum block for guiding the steel balls in the discharge trough into the good product drop trough or the defective product drop trough, and the eddy current detection mechanism also includes a swing cylinder for driving the pendulum block to swing.

[0010] In one of the embodiments, the support plate is provided with a plurality of cylindrical step grooves of different heights, each of the cylindrical step grooves is correspondingly provided with a steel ball dropping trough, and the rotating plate is provided with cylindrical step protrusions respectively adapted to the plurality of cylindrical step grooves.

[0011] In one embodiment, there are two feeding mechanisms, which are arranged opposite to each other, and the multiple steel ball sorting grooves with different diameters are arranged in four groups, which are arranged in a circumferential ring array along the rotating plate. The driving assembly includes a reducer connected to the rotating plate and a servo motor connected to the reducer. The rotating plate is configured so that when the rotating plate is rotated 90 degrees forward or 90 degrees reversed, two opposite groups of steel ball sorting grooves with different diameters are respectively located directly below the two feeding mechanisms.

[0012] In one embodiment, the detection method of the steel ball eddy current automatic detection machine comprises the following steps:

[0013] S1. Adjust the feeding mechanism and eddy current detection mechanism to align them with the steel ball drop trough of the target diameter, and block the remaining steel ball drop troughs with plugs;

[0014] S2. Place the steel ball to be tested into the upper feeding mechanism;

[0015] S3, start the sorting and testing machine, the rotating plate rotates, and when the steel ball sorting slot corresponding to the steel ball dropping slot of the target diameter passes through the feeding mechanism, the steel balls pass through the steel ball sorting slot and the steel ball dropping slot and enter the eddy current testing mechanism for eddy current testing;

[0016] S4. After the inspection, the steel balls enter the receiving platform.

[0017] In one embodiment, in step S3, after the sorting and inspection machine is started, the servo motor drives the rotating plate to reciprocate 90 degrees forward and 90 degrees reverse.

[0018] In one of the embodiments, in step S4, a good product receiving frame and a bad product receiving frame are respectively provided on the receiving platform.

[0019] In summary, the present invention has the following beneficial effects: when the present invention is working, the feeding mechanism and the eddy current detection mechanism are adjusted to align with the steel ball dropping trough of the target diameter, the remaining steel ball dropping troughs are blocked by plugs, the steel balls to be tested are placed in the feeding mechanism, the sorting detection machine is started, and the turn plate rotates. When the steel ball sorting trough corresponding to the steel ball dropping trough of the target diameter passes through the feeding mechanism, the steel balls pass through the steel ball sorting trough and the steel ball dropping trough into the eddy current detection mechanism to complete the eddy current detection. There is no need to drive the steel balls themselves to rotate. The steel balls can complete the detection by passing through the eddy current detection mechanism. It has the advantages of high detection accuracy and efficiency. At the same time, it can also be applied to the detection of steel balls of different diameters and has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a steel ball eddy current automatic testing machine according to an embodiment of the present application;

[0021] Figure 2An exploded view of a rotary material distribution mechanism in a steel ball eddy current automatic testing machine according to an embodiment of the present application;

[0022] Figure 3 This is a schematic structural diagram of the eddy current detection mechanism in the steel ball eddy current automatic detection machine of the embodiment of the present application.

[0023] In the figure: 1. frame; 11. material receiving platform; 2. rotating material dividing mechanism; 21. support plate; 211. steel ball dropping chute; 212. cylindrical step groove; 22. rotating plate; 221. steel ball sorting chute; 23. servo motor; 3. feeding mechanism; 31. first slide rail pair; 32. first slide plate; 33. material rack; 34. hopper; 4. eddy current detection mechanism; 41. second slide rail pair; 42. second slide plate; 43. annular eddy current instrument; 44. pipeline; 45. bracket; 46. discharge chute; 461. good product dropping chute; 462. bad product dropping chute; 47. valve; 48. swing block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figures 1 to 3 As shown, an embodiment of the present application provides a steel ball eddy current automatic detection machine, comprising a frame 1 and a material receiving platform 11 arranged below the frame 1, and also comprising a rotary material distribution mechanism 2 arranged on the frame 1, a feeding mechanism 3 for feeding materials to the rotary material distribution mechanism 2, and an eddy current detection mechanism 4 arranged between the rotary material distribution mechanism 2 and the material receiving platform 11. The rotary material distribution mechanism 2 comprises a support plate 21 fixed on the frame 1, a rotating plate 22 rotatably connected to the support plate 21, and a driving assembly for driving the rotating plate 22 to rotate, a plurality of steel ball sorting troughs 221 of different diameters are radially arranged on the rotating plate 22, a plurality of steel ball drop troughs 211 are arranged on the support plate 21, and the steel ball drop troughs 211 correspond to the steel ball sorting troughs 221 in size, quantity and position, and the feeding mechanism 3 and the eddy current detection mechanism 4 can move radially along the support plate 21 to align with the steel ball drop troughs 211 of corresponding diameters. The steel ball sorting tank 221 in the non-sorting state is detachably connected with a plug for sealing the steel ball sorting tank 221 .

[0026] When the above-mentioned sorting and testing machine is working, the feeding mechanism 3 and the eddy current testing mechanism 4 are adjusted to align them with the steel ball dropping trough 211 of the target diameter, and the remaining steel ball dropping troughs 211 are blocked by plugs. The steel balls to be tested are placed into the feeding mechanism 3, and the sorting and testing machine is started. The turn plate 22 rotates. When the steel ball sorting trough 221 corresponding to the steel ball dropping trough 211 of the target diameter passes through the feeding mechanism 3, the steel balls pass through the steel ball sorting trough 221 and the steel ball dropping trough 211 and enter the eddy current testing mechanism 4 to complete the eddy current testing.

[0027] Compared with the prior art, the above method does not need to drive the steel ball to rotate itself. The steel ball can complete the detection by passing through the eddy current detection mechanism 4. It has the advantages of high detection accuracy and efficiency. At the same time, it can also be applied to the detection of steel balls of different diameters and has good applicability.

[0028] In this embodiment, the feeding mechanism 3 includes a first slide plate 32 slidably connected to the frame 1 through a first slide rail pair 31, a first locking knob for locking the first slide plate 32 with the first slide rail pair 31, a material rack 33 fixed on the first slide plate 32, and a hopper 34 fixed on the material rack 33, a discharge port is provided at the bottom of the hopper 34, the plane where the discharge port is located is in gap contact with the rotating plate 22, and the contact gap is smaller than the diameter of the minimum diameter of the steel ball sorting trough 221, and a steel ball scraper is provided on the hopper 34 on the inner side of the discharge port.

[0029] During operation, the rotating plate 22 rotates to drive the steel balls in the hopper 34 to move, and the steel balls enter the steel ball sorting tank 221 under the push of the steel ball scraper.

[0030] The above-mentioned structure provides the advantages that the steel balls have a high success rate of entering the steel ball sorting tank 221 and are not easily damaged.

[0031] In this embodiment, the eddy current detection mechanism 4 includes a second slide plate 42 slidably connected to the frame 1 through a second slide rail pair 41, a second locking knob for locking the second slide plate 42 with the second slide rail pair 41, an annular eddy current meter 43 fixed on the second slide plate 42, and a pipe 44 connected to the annular eddy current meter 43, wherein the annular eddy current meter 43 has a detection channel for a steel ball to pass through and perform eddy current detection, and the end of the pipe 44 away from the annular eddy current meter 43 is connected to a discharge trough 46, and the second slide plate 42 is provided with a useful A bracket 45 is provided for supporting the pipeline 44 and the discharge trough 46, and a valve 47 for opening and closing the pipeline 44 is provided on the bracket 45 between the pipeline 44 and the discharge trough 46. One end of the discharge trough 46 away from the pipeline 44 is branched to form a good product drop trough 461 and a bad product drop trough 462. The discharge trough 46 is provided with a pendulum block 48 for guiding the steel balls in the discharge trough 46 into the good product drop trough 461 or the bad product drop trough 462. The eddy current detection mechanism 4 also includes a swing cylinder for driving the swing block 48 to swing.

[0032] The annular eddy current instrument 43 adopts the existing technology, which specifically includes an annular channel and an annular eddy current probe arranged on the inner wall of the annular channel. When the steel ball enters the detection channel, the eddy current detection of the entire spherical surface of the steel ball can be completed.

[0033] The above-mentioned structural setting has the advantages of simple structure and good stability, and effectively improves the detection accuracy and detection efficiency of the steel ball.

[0034] In this embodiment, the support plate 21 is provided with a plurality of cylindrical step grooves 212 of different heights, each of the cylindrical step grooves 212 is correspondingly provided with a steel ball drop chute 211, and the rotating plate 22 is provided with cylindrical step protrusions respectively adapted to the plurality of cylindrical step grooves 212.

[0035] The arrangement of the cylindrical step groove 212 and the cylindrical step protrusion makes the rotation of the rotating plate 22 more stable and smooth.

[0036] In this embodiment, there are two feeding mechanisms 3, which are arranged opposite to each other. The multiple steel ball sorting grooves 221 with different diameters are arranged in four groups. The four groups of steel ball sorting grooves 221 with different diameters are arranged in a circumferential annular array along the rotating plate 22. The driving assembly includes a reducer connected to the rotating plate 22 and a servo motor 23 connected to the reducer. The rotating plate 22 is configured such that when the rotating plate 22 is rotated 90 degrees forward or 90 degrees reversed, the two relative groups of steel ball sorting grooves 221 with different diameters are respectively located directly below the two feeding mechanisms 3.

[0037] It can be understood that each feeding mechanism 3 is equipped with an eddy current detection mechanism 4 .

[0038] During operation, the rotating plate 22 reciprocates 90 degrees forward and 90 degrees reverse, so that the steel ball sorting slot 221 can be located just below the two feeding mechanisms 3.

[0039] In the above manner, the servo motor 23 obtains the steel ball only by driving the rotating plate 22 to rotate 90 degrees forward and 90 degrees reverse, which reduces the number of rotation steps of the servo motor 23, realizes double-station loading, and effectively improves the detection efficiency.

[0040] In this embodiment, the detection method of the steel ball eddy current automatic detection machine includes the following steps:

[0041] S1, adjust the feeding mechanism 3 and the eddy current detection mechanism 4 so that they are aligned with the steel ball dropping groove 211 of the target diameter, and block the remaining steel ball dropping grooves 211 with plugs;

[0042] S2, put the steel ball to be tested into the upper feeding mechanism 3;

[0043] S3, start the sorting and testing machine, the rotating plate 22 rotates, and when the steel ball sorting slot 221 corresponding to the steel ball dropping slot 211 of the target diameter passes through the feeding mechanism 3, the steel balls pass through the steel ball sorting slot 221 and the steel ball dropping slot 211 and enter the eddy current testing mechanism 4 for eddy current testing;

[0044] S4, the steel balls after detection enter the material receiving platform 11.

[0045] In this embodiment, in step S3, after the sorting and inspection machine is started, the servo motor 23 drives the rotating plate 22 to reciprocate by 90 degrees forward and 90 degrees reverse.

[0046] In the above method, the servo motor 23 can obtain the steel ball by driving the rotating plate 22 to rotate 90 degrees forward and 90 degrees reverse, which reduces the number of rotation steps of the servo motor 23, realizes double-station loading, and effectively improves the detection efficiency.

[0047] In this embodiment, in step S4, a good product receiving frame and a bad product receiving frame are respectively provided on the receiving platform 11.

[0048] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A steel ball eddy current automatic testing machine, comprising a frame (1) and a material receiving platform (11) arranged below the frame (1), characterized in that: The invention also comprises a rotating material distribution mechanism (2) arranged on a frame (1), a feeding mechanism (3) for feeding material to the rotating material distribution mechanism (2), and an eddy current detection mechanism (4) arranged between the rotating material distribution mechanism (2) and a material receiving platform (11), wherein the rotating material distribution mechanism (2) comprises a support plate (21) fixed on the frame (1), a rotating plate (22) rotatably connected to the support plate (21), and a driving component for driving the rotating plate (22) to rotate, wherein the rotating plate (22) is provided with a plurality of different The support plate (21) is provided with a plurality of steel ball dropping grooves (211), the steel ball dropping grooves (211) correspond to the steel ball sorting grooves (221) in size, number and position, the feeding mechanism (3) and the eddy current detection mechanism (4) can respectively move along the radial direction of the support plate (21) to align with the steel ball dropping grooves (211) of corresponding diameters, wherein a plug for sealing the steel ball sorting groove (221) in a non-sorting state is detachably connected; The feeding mechanism (3) comprises a first slide plate (32) slidably connected to the frame (1) through a first slide rail pair (31), a first locking knob for locking the first slide plate (32) and the first slide rail pair (31), a material rack (33) fixed on the first slide plate (32), and a hopper (34) fixed on the material rack (33), wherein a discharge port is arranged at the bottom of the hopper (34), the plane where the discharge port is located is in gap contact with the rotating plate (22), and the contact gap is smaller than the diameter of the steel ball sorting trough (221) with the smallest diameter, and a steel ball scraper is arranged on the inner side of the discharge port on the hopper (34); The eddy current detection mechanism (4) comprises a second slide plate (42) slidably connected to the frame (1) via a second slide rail pair (41), a second locking knob for locking the second slide plate (42) with the second slide rail pair (41), an annular eddy current meter (43) fixed to the second slide plate (42), and a pipe (44) connected to the annular eddy current meter (43), wherein the annular eddy current meter (43) has a detection channel for a steel ball to pass through and perform eddy current detection, an end of the pipe (44) away from the annular eddy current meter (43) is connected to a discharge trough (46), and a second slide plate (42) is provided with a support for supporting the pipe (43). 4) and a bracket (45) for a discharge trough (46), wherein a valve (47) for opening and closing the pipeline (44) is arranged on the bracket (45) between the pipeline (44) and the discharge trough (46), and the end of the discharge trough (46) away from the pipeline (44) is branched to form a good product drop trough (461) and a bad product drop trough (462), and the discharge trough (46) is provided with a swing block (48) for guiding the steel ball in the discharge trough (46) into the good product drop trough (461) or the bad product drop trough (462), and the eddy current detection mechanism (4) also includes a swing cylinder for driving the swing block (48) to swing; The support plate (21) is provided with a plurality of cylindrical step grooves (212) of different heights, each of the cylindrical step grooves (212) is correspondingly provided with a steel ball drop chute (211), and the rotating plate (22) is provided with cylindrical step protrusions respectively adapted to the plurality of cylindrical step grooves (212).

2. The steel ball eddy current automatic testing machine according to claim 1 is characterized in that: The feeding mechanisms (3) are provided in two numbers, the two feeding mechanisms (3) are arranged opposite to each other, the plurality of steel ball sorting grooves (221) of different diameters are provided in four groups, the four groups of steel ball sorting grooves (221) of different diameters are arranged in a circumferential annular array along the rotating plate (22), the driving assembly comprises a reducer connected to the rotating plate (22) and a servo motor (23) connected to the reducer, and the rotating plate (22) is configured such that when the rotating plate (22) rotates 90 degrees forward or 90 degrees reversely, the two groups of steel ball sorting grooves (221) of different diameters are respectively located directly below the two feeding mechanisms (3).

3. The detection method of the steel ball eddy current automatic detection machine according to any one of claims 1-2, characterized in that: The steps include: S1, adjusting the feeding mechanism (3) and the eddy current detection mechanism (4) so ​​that they are aligned with the steel ball dropping trough (211) of the target diameter, and sealing the remaining steel ball dropping troughs (211) with plugs; S2, placing the steel ball to be tested into the upper feeding mechanism (3); S3, starting the sorting and testing machine, the rotating plate (22) rotates, and when the steel ball sorting groove (221) corresponding to the steel ball dropping groove (211) of the target diameter passes through the feeding mechanism (3), the steel balls pass through the steel ball sorting groove (221) and the steel ball dropping groove (211) and enter the eddy current testing mechanism (4) for eddy current testing; S4, after the detection, the steel balls enter the material receiving platform (11).

4. The detection method of the steel ball eddy current automatic detection machine according to claim 3 is characterized in that: In step S3, after the sorting and inspection machine is started, the servo motor (23) drives the rotating plate (22) to reciprocate forward 90 degrees and reverse 90 degrees.

5. The detection method of the steel ball eddy current automatic detection machine according to claim 3 is characterized in that: In step S4, a good product receiving frame and a bad product receiving frame are respectively provided on the receiving platform (11).

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