A brake disc eddy current flaw detection device

Abstract

The present invention relates to a brake disc eddy current flaw detection device, comprising a base and a frame, and also comprising a positioning mechanism, a lever mechanism, and a plurality of sensor probes for eddy current flaw detection, wherein the positioning mechanism is arranged on the base, the positioning mechanism comprises a central column, a supporting column, a positioning sleeve and an elastic supporting device, a plurality of the supporting columns are circumferentially arranged around the central column, the positioning sleeve is installed on the end of the central column through the elastic supporting device in a manner that it can rotate around its own axis; the lever mechanism is arranged above the positioning mechanism through a displacement seat to realize the movement of the lever mechanism in four directions of up, down, front and back, the lever mechanism comprises a lever assembly and a rotating mechanism that drives the lever assembly to rotate; a plurality of the sensor probes are installed on the frame so as to align with the to-be-detected parts of the brake disc.

Description

Technical Field

[0001] The invention relates to a brake disc eddy current flaw detection device, belonging to the technical field of eddy current flaw detection devices. Background Art

[0002] The brake disc is a key component for achieving automobile braking. The brake disc needs to be tested by eddy current flaw detection during the production process and before leaving the factory. Eddy current flaw detection is a flaw detection method that uses the principle of electromagnetic induction to detect surface defects of components and metal materials. Only when the detection results meet the requirements can the vehicle braking be guaranteed to be smooth, safe and reliable.

[0003] The existing eddy current flaw detection equipment for brake discs has the following problems: (1) The positioning sleeve of the traditional eddy current flaw detection equipment is fixed, and the positioning sleeve cannot rotate with the rotation of the brake disc. The brake disc rotates unsteadily on the positioning sleeve, which may cause the workpiece to scratch the positioning sleeve; (2) Since the workpiece needs to rotate at a relatively fast speed during the flaw detection process, it is easy for the supporting tooling to scratch the workpiece, affecting product quality; (3) Brake discs of different specifications require the production of supporting tooling and positioning sleeves of different specifications, and it takes a long time to disassemble and replace the supporting tooling and positioning sleeves; (4) In the dusty environment of the workshop, since the industrial microphone is always in an upward position, a lot of dust will accumulate in the recorder, affecting the measurement results of the natural frequency. Summary of the invention

[0004] The purpose of the present invention is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0005] The present invention provides a brake disc eddy current flaw detection device, comprising a base and a frame, and also comprising a positioning mechanism, a lever mechanism, and a plurality of sensor probes for eddy current flaw detection, wherein the positioning mechanism is arranged on the base, the positioning mechanism comprises a central column, a supporting column, a positioning sleeve and an elastic supporting device, a plurality of the supporting columns are circumferentially arranged around the central column, the positioning sleeve is installed on the end of the central column through the elastic supporting device in a manner that it can rotate around its own axis; the lever mechanism is arranged above the positioning mechanism through a displacement seat to realize the movement of the lever mechanism in four directions of up, down, front and back, the lever mechanism comprises a lever assembly and a rotating mechanism that drives the lever assembly to rotate; a plurality of the sensor probes are installed on the frame or the base, and a supporting bearing is also provided at the end of the supporting column, and the supporting bearing is installed on the inner side or / and the outer side of the supporting column.

[0006] Furthermore, it also includes a natural frequency detection device, which includes a vertical mounting plate, a knocking hammer, an industrial microphone, and a lifting device for supporting brake disc detection, the knocking hammer and the industrial microphone are installed on the vertical mounting plate, the industrial microphone is rotatably mounted on the vertical mounting plate and the industrial microphone is arranged on one side of the knocking hammer, and when the industrial microphone rotates around the rotation axis, the sound input port of the industrial microphone can face upward or downward.

[0007] Furthermore, the lifting device includes multiple lifting columns, a support plate and a lifting cylinder. The multiple lifting columns are arranged around the positioning mechanism and the multiple lifting columns are arranged on the support plate. The support plate is installed on the output shaft of the lifting cylinder to realize the overall lifting of the lifting columns.

[0008] Furthermore, it also includes a plurality of guide rails, which are circumferentially arranged around the central column, and a plurality of support columns are respectively installed on their own guide rails in a manner that they can move forward and backward along the guide rails, and a locking mechanism is also provided between the guide rails and the support columns.

[0009] Furthermore, the rotating mechanism includes a hollow shaft, a bearing sleeve, and a synchronous wheel. The bearing sleeve is sleeved on the outer side of the hollow shaft and the bearing sleeve is connected to the hollow shaft through a bearing. The bearing sleeve is fixed on the displacement seat. A synchronous wheel is fixedly sleeved on one end of the hollow shaft, and a lever assembly is set at the other end of the hollow shaft.

[0010] Furthermore, the lever assembly includes a lever sleeve, a spring and a lever, the lever sleeve is sleeved on the outside of the lever, and the lever sleeve is connected to the lever through the spring, and the lever assembly is installed on one end of the hollow shaft through a transverse connecting plate.

[0011] Furthermore, the elastic support device includes a push rod, a spring and a positioning sleeve connecting rod, the positioning sleeve is installed on one end of the positioning sleeve connecting rod through a bearing, the other end of the positioning sleeve connecting rod is connected to the push rod through a spring, a hollow cavity is provided in the center column, and the elastic support device is installed in the hollow cavity of the center column.

[0012] Furthermore, the number of the sensor probes is eight, including an upper brake surface detection probe, a lower brake surface detection probe, a grooved surface detection probe for detecting damage to the grooved part of the brake disc, a detection probe for detecting the small outer cylindrical surface of the brake disc, and four detection probes for detecting the inner / outer end surfaces of the brake disc mounting inner circle. The eight sensor probes perform eddy current flaw detection on the upper brake surface, lower brake surface, grooved surface, small outer cylindrical surface, and the first outer end surface, second outer end surface, first inner end surface and second inner end surface of the mounting inner circle of the brake disc, respectively.

[0013] Furthermore, the upper brake surface detection probe and the lower brake surface detection probe are installed on a first lifting mechanism, the first lifting mechanism is installed on a linear slide, and the linear slide is fixed on a measuring slide; thereby, the upper brake surface detection probe and the lower brake surface detection probe are able to move in six directions: up, down, left, right, front, and rear; the grooved surface detection probe is installed on a second lifting mechanism, and the second lifting mechanism is installed on a measuring slide; thereby, the grooved surface detection probe is moved in the up, down, front, and rear directions; a central fixing rod is also fixed in the hollow cavity of the hollow shaft of the rotating mechanism, and one of the detection probes for detecting the inner / outer end surface of the inner circle of the brake disc installation is arranged at the end of the central fixing rod.

[0014] Furthermore, the positioning mechanism also includes a synchronous adjustment device, which includes an adjustment sleeve and a plurality of connecting rods, the number of the connecting rods is adapted to the number of the supporting columns, the adjustment sleeve is sleeved on the outer side of the central column in a manner that it can slide up and down along the central column, and the adjustment sleeve is connected to the plurality of supporting columns through a plurality of connecting rods.

[0015] Furthermore, it also includes a barcode scanner, which is installed on the measuring slide through a barcode scanner bracket, and the barcode scanner can move in the front and rear directions along the measuring slide.

[0016] Furthermore, after the lower part of the push rod extends out of the central column, it is installed on the displacement platform through the connecting plate. The displacement platform enables the push rod to be adjusted in height in the upward and downward directions, and the elastic force of the spring is changed by adjusting the height of the push rod.

[0017] Furthermore, it also includes a knob, which is installed in conjunction with the connecting plate. The height of the connecting plate is adjusted by rotating the knob, thereby achieving adjustment of the height of the push rod.

[0018] Furthermore, the elastic supporting device also includes a limiting device capable of limiting the distance that the positioning sleeve moves up and down.

[0019] The beneficial effects of the present invention are:

[0020] 1. The positioning sleeve of the present invention is installed at the end of the central column in a manner that it can rotate around its own axis. The brake disc is sleeved on the outside of the positioning sleeve. The brake disc is rotated by the lever mechanism. The positioning sleeve rotates synchronously with the brake disc. The positioning sleeve will not cause friction with the center hole of the brake disc, thereby ensuring the smooth rotation of the brake disc. In addition, when the brake disc eddy current flaw detection equipment of the present invention is used to detect the brake disc, the brake disc can be rotated at high speed, thereby improving the detection efficiency of the brake disc.

[0021] 2. The end of the support column of the present invention is also provided with a support bearing, and the mounting inner circle of the brake disc is in contact with the support bearing. When the brake disc rotates, the support bearing will rotate around its own axis, thereby preventing friction between the mounting inner circle of the brake disc and the support column. When the brake disc rotates at high speed, the support column will not scratch the brake disc, thereby ensuring that the brake disc is not damaged during the detection process.

[0022] 3. The present invention can adjust the size of the supporting range of the supporting column by adjusting the position of the supporting column on the guide rail, so that it is suitable for supporting and installing brake discs with different inner circle sizes, so as to achieve the function of supporting and positioning detection of brake discs with inner circles of various specifications using the same inspection fixture, thereby reducing production costs.

[0023] 4. The locating sleeve of the present invention is supported by the elastic supporting device. When the brake disc is placed on the locating sleeve, the brake disc presses the locating sleeve downward under the action of its own gravity, thereby ensuring not only that the locating sleeve contacts the center hole of the brake disc, but also that the mounting inner circle of the brake disc contacts the support bearing. Therefore, it is suitable for support detection of brake discs of different weights; and the elastic force of the spring will reduce the pressure of the brake disc on the support bearing.

[0024] 5. The natural frequency detection device of the present invention can detect the natural frequency of the brake disc before flaw detection. The industrial microphone of the natural frequency detection device is rotatably mounted on a vertical mounting plate. When performing natural frequency measurement, the industrial microphone is rotated so that the sound input port of the industrial microphone faces upward. When not measuring, the industrial microphone is flipped so that the sound input port of the industrial microphone faces downward to prevent dust from entering and affecting the measurement effect.

[0025] 6. The number of sensor probes of the present invention is eight, and flaw detection can be performed at six fixed positions and two brake surfaces of the brake disc, with accurate flaw detection and improved product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 is a schematic diagram of the brake disc structure;

[0028] Figure 3 It is a schematic diagram of the structure of the lever driving the brake disc to rotate according to the present invention;

[0029] Figure 4 It is a schematic diagram of the enlarged structure of point A of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the lever mechanism of the present invention;

[0031] Figure 6 It is a cross-sectional view taken along the line AA of the present invention;

[0032] Figure 7 It is a schematic structural diagram of the elastic support device of the present invention;

[0033] Figure 8 It is a BB sectional view of the present invention;

[0034] Fig. 9 It is a schematic diagram of the positioning mechanism structure of the present invention;

[0035] Fig.10 It is a structural schematic diagram of the installation of the top rod of the present invention;

[0036] Fig.11 The natural frequency detection device of the present invention;

[0037] Fig.12 It is a structural schematic diagram of the sensor probe installation of the present invention;

[0038] Fig.13 It is a schematic diagram of the enlarged structure at B;

[0039] Fig.14 It is a structural schematic diagram of the sensor of the present invention when it reaches a set position;

[0040] In the figure, 101, base; 102, frame; 2, positioning mechanism; 201, center column; 202, guide rail; 203, support column; 204, positioning sleeve; 205, support bearing; 206, clamp; 3, elastic support device; 301, ejector rod; 302, positioning sleeve connecting rod; 303, limiting sleeve; 304, limiting pin / shaft; 305, flange end plate; 306, oblong hole; 307, displacement stage; 308, connecting plate; 309, knob; 4. Synchronous adjustment device; 401. Adjustment sleeve; 402. Connecting rod; 5. Lever assembly; 501. Lever sleeve; 502. Spring; 503. Lever; 6. Brake disc; 601. Mounting inner circle; 6011. First outer end surface; 6012. Second outer end surface; 6013. First inner end surface; 6014. Second inner end surface; 602. Center hole; 603. Bolt hole; 604. Grooved surface; 605. Upper brake surface; 606. Lower brake surface; 607. Small outer circle Surface; 7, natural frequency detection device; 701, vertical mounting plate; 702, percussion hammer; 703, industrial microphone; 704, rotary cylinder; 705, mobile slide; 8, sensor probe; 801, upper brake surface detection probe; 802, lower brake surface detection probe; 803, groove surface detection probe; 804, first detection probe; 805, small outer circle detection probe; 806, second detection probe; 807, third detection probe; 808, fourth detection probe; 9 , barcode scanner; 10, measuring slide; 11, lifting device; 1101, lifting column; 1102, support plate; 12, bearing; 13, rotating mechanism; 1301, hollow shaft; 1302, bearing sleeve; 1303, synchronous wheel; 1304, locking nut; 1305, spacer; 1306, U-shaped bracket; 1307, center fixing rod; 1308, displacement seat; 14, linear slide; 1501, first lifting mechanism; 1502, second lifting mechanism. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below in conjunction with examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] like Figure 1-12As shown, a brake disc eddy current flaw detection equipment includes a base 101 and a frame 102, and also includes a positioning mechanism 2, a lever 503 mechanism, and a plurality of sensor probes 8 for eddy current flaw detection, wherein the positioning mechanism 2 is arranged on the base 101, and the positioning mechanism 2 includes a central column 201, a supporting column 203, a positioning sleeve 204 and an elastic support device 3, a plurality of the supporting columns 203 are circumferentially arranged around the central column 201, and the positioning sleeve 204 is installed on the end of the central column 201 through the elastic support device 3 in a manner that it can rotate around its own axis; the lever 503 mechanism is arranged above the positioning mechanism 2 through a displacement seat 1308 to realize the movement of the lever 503 mechanism in four directions of up, down, front and back, and the lever 503 mechanism includes a lever assembly 5 and a rotating mechanism 13 that drives the lever assembly 5 to rotate; a plurality of the sensor probes 8 are installed on the frame 102.

[0043] like Figure 3-4 As shown, when in use, the brake disc 6 is sleeved outside the positioning sleeve 204, and the positioning sleeve 204 is used to locate the rotation center position of the brake disc 6. The rotating mechanism 13 is driven to rotate by the lever 503 motor, and the displacement seat 1308 drives the lever assembly 5 to be inserted into the bolt hole 603 of the brake disc 6. The rotation of the brake disc 6 on the positioning sleeve 204 is realized by the movement of the lever 503 mechanism, and the positioning sleeve 204 rotates synchronously with the brake disc 6. While the brake disc 6 rotates, a number of sensor probes 8 used for eddy current flaw detection perform comprehensive inspection on the brake disc 6.

[0044] In addition, in a specific embodiment,

[0045] Brake disc 6 (such as Figure 2 As shown): the brake disc includes a mounting inner circle 601, a center hole 602, a bolt hole 603, a groove 604, an upper brake surface 605, and a lower brake surface 606.

[0046] Support column 203 (such as Fig. 9As shown): a plurality of the support columns 203 are respectively mounted on the guide rails 202, and the plurality of the support columns 203 can move along the guide rails 202. A locking mechanism is also provided between the guide rails 202 and the support columns 203. The locking mechanism is a clamp 206. Of course, the locking mechanism can also be other devices with a locking function. By adjusting the position of the support column 203 on the guide rails 202, the size of the support range of the support column 203 can be adjusted, so that it is suitable for supporting and installing brake discs 6 with different sizes of inner circles 601, so as to achieve the function of supporting and positioning detection of brake discs 6 with inner circles 601 of various specifications using the same inspection fixture. The number of the guide rails 202 is matched with the number of the support columns 203. In the specific embodiment, the number of the guide rails 202 and the support columns 203 is three. Of course, the number of the guide rails 202 and the support columns 203 can also be more or less, as long as the balanced support of the brake disc 6 can be achieved. A support bearing 205 is also provided at the end of the support column 203. The support bearing 205 is installed on the inner side and / or the outer side of the support column 203. The central axis of the support bearing 205 is perpendicular to the axis of the central column 201. The installation inner circle 601 of the brake disc 6 is in contact with the support bearing 205. When the brake disc 6 rotates, the support bearing 205 will rotate around its own axis, which can prevent friction between the installation inner circle 601 of the brake disc 6 and the support column 203, and further ensure that the brake disc 6 is not damaged during the detection process.

[0047] Elastic support device 3 (such as Figure 7-8As shown): the elastic support device 3 includes a push rod 301, a spring 502 and a positioning sleeve connecting rod 302. The positioning sleeve 204 is installed at one end of the positioning sleeve connecting rod 302 through a bearing 12, and the other end of the positioning sleeve connecting rod 302 is connected to the push rod 301 through a spring 502. A hollow cavity is provided in the central column 201, and the elastic support device 3 is installed in the hollow cavity of the central column 201. After the lower part of the push rod 301 extends out of the central column 201, it is installed on the displacement platform 307 through a connecting plate 308. The displacement platform 307 enables the push rod 301 to adjust its height in the upward and downward directions, and the elastic force of the spring 502 is changed by adjusting the height of the push rod 301. In addition, a knob 309 is also provided on the workbench, and the knob 309 is installed in linkage with the connecting plate 308. The height of the connecting plate 308 is adjusted by rotating the knob 309, thereby adjusting the height of the push rod 301. The elastic support device 3 also includes a limiting device that can limit the distance that the positioning sleeve 204 moves up and down, and the limiting device includes a limiting sleeve 303 and a limiting pin / shaft 304. The limiting sleeve 303 is fixedly connected to the central column 201 through a flange end plate 305, and the limiting sleeve 303 is sleeved on the outer side of the positioning sleeve connecting rod 302. The limiting sleeve 303 is provided with an oblong hole 306. The limiting pin / shaft 304 is fixed on the positioning sleeve connecting rod 302, and the limiting pin / shaft 304 is located in the oblong hole 306. The combined action of the limiting sleeve 303 and the limiting pin / shaft 304 can not only limit the distance that the positioning sleeve 204 moves up and down, but also prevent the spring 502 from fatigue fracture.

[0048] Positioning sleeve 204 (such as Figure 7-8 As shown): the positioning sleeve 204 is supported by the elastic support device 3. The positioning sleeve 204 is a cone structure with a diameter gradually increasing from top to bottom, and can be suitable for brake discs 6 with different central hole diameters. When the brake disc 6 is placed on the positioning sleeve 204, the brake disc 6 presses the positioning sleeve 204 downward under the action of its own gravity, thereby ensuring that not only the positioning sleeve 204 is in contact with the center hole 602 of the brake disc 6, but also the installation inner circle 601 of the brake disc 6 is in contact with the support bearing 205. In addition, The height of the push rod 301 can also be adjusted according to the weight of the brake disc 6, so as to achieve the effect of adjusting the elastic force of the spring 502. If the brake disc 6 is heavier, the push rod 301 is adjusted upward to compress the spring 502, thereby increasing the elastic force of the spring 502. If the brake disc 6 is lighter, the push rod 301 is adjusted downward to reduce the elastic force of the spring 502. Therefore, it is suitable for support detection of brake discs 6 of different weights, and the elastic force of the spring 502 will reduce the pressure of the brake disc 6 on the support bearing 205.

[0049] Synchronous adjustment device 4 (such as Fig. 9 As shown): The positioning mechanism 2 for detecting the brake disc 6 also includes a synchronous adjustment device 4, which includes an adjustment sleeve 401 and a plurality of connecting rods 402. The number of the connecting rods 402 matches the number of the supporting columns 203. For example, when the number of the supporting columns 203 is roots, the number of the connecting rods 402 is also strips. The adjustment sleeve 401 is sleeved on the outer side of the central column 201 in a manner that it can slide up and down along the central column 201, and the adjustment sleeve 401 and the plurality of supporting columns 203 are connected by a plurality of connecting rods 402. When the adjustment sleeve 401 moves up and down, the plurality of supporting columns 203 are driven to move along their respective guide rails 202 at the same time by the connecting rods 402. When the supporting columns 203 move to a suitable position, the supporting columns 203 are fixed to the guide rails 202 by a locking mechanism.

[0050] The natural frequency detection device 7 (such as Fig.11 As shown): the brake disc 6 eddy current flaw detection equipment also includes a natural frequency detection device 7, the natural frequency detection device 7 includes a vertical mounting plate 701, a knocking hammer 702, an industrial microphone 703, and a lifting device 11 for supporting the detection of the brake disc 6, the knocking hammer 702 and the industrial microphone 703 are installed on the vertical mounting plate 701, the industrial microphone 703 is rotatably mounted on the vertical mounting plate 701 and the industrial microphone 703 is arranged on one side of the knocking hammer 702, when the industrial microphone 703 rotates around the rotation axis, the sound input port of the industrial microphone 703 can be made to face upward or downward, in a specific embodiment, the industrial microphone 703 is installed on the vertical mounting plate 701 through a natural frequency rotating cylinder 704, of course, the industrial microphone 703 can also be installed through a device with a rotating function, the knocking hammer 702 can adopt an existing push-pull electromagnet sold on the market, such as the push-pull electromagnet model KK-15648 produced by Yueqing Kaka Electric Co., Ltd. The vertical mounting plate 701 can be slidably mounted on the workbench via the movable slide 705. The vertical mounting plate 701 can be moved and fixed along with the movable slide 705, which can not only adjust the position of the natural frequency hammer 702 striking the workpiece, but also be suitable for workpieces of different models.

[0051] Lifting device 11 (such as Figure 1 and Figure 3As shown): The lifting device 11 is used to support the brake disc 6 to a certain height and then perform natural frequency detection. The lifting device 11 includes multiple lifting columns 1101, a support plate 1102 and a lifting cylinder. The multiple lifting columns 1101 are arranged around the positioning mechanism 2 and the multiple lifting columns 1101 are arranged on the support plate 1102. The support plate 1102 is installed on the output shaft of the lifting cylinder to realize the overall lifting of the lifting columns 1101.

[0052] Rotating mechanism 13: includes a hollow shaft 1301, a bearing sleeve 1302, and a synchronous wheel 1303. The bearing sleeve 1302 is sleeved on the outer side of the hollow shaft 1301 and the bearing sleeve 1302 is connected to the hollow shaft 1301 through a bearing 12. The bearing sleeve 1302 is fixed on the displacement seat 1308. A synchronous wheel 1303 is sleeved on one end of the hollow shaft 1301 and fixed by a locking nut 1304. A spacer sleeve 1305 is also provided between the synchronous wheel 1303 and the locking nut 1304. A lever assembly is provided at the other end of the hollow shaft 1301. The synchronous wheel 1303 meshes with the gear on the output shaft of the lever 503 motor, and the rotation of the lever 503 motor is transmitted to the hollow shaft 1301 through the synchronous wheel 1303, thereby realizing the rotation of the hollow shaft 1301. Since the bearing sleeve 1302 is fixed on the displacement seat 1308, the bearing sleeve 1302 is stationary, and the hollow shaft 1301 drives the lever 503 to rotate, and the lever 503 is inserted into the bolt hole 603 of the brake disc 6 to realize the rotation of the brake disc 6. A U-shaped bracket 1306 is also provided on the rotating mechanism 13.

[0053] Lever assembly (such as Figure 6 300 ): comprising a lever sleeve 501, a spring 502 and a lever 503, wherein the lever sleeve 501 is sleeved on the outside of the lever 503, and the lever sleeve 501 is connected to the lever 503 through the spring 502, and the lever assembly is installed at one end of the hollow shaft 1301 through the transverse connecting plate 308. When the lever 503 descends to cooperate with the bolt hole 603 of the brake disc 6, the lever 503 may press against the end surface of the brake disc 6, and when the lever 503 rotates to the bolt hole 603, it pops out under the action of the spring 502, so that the lever 503 can be smoothly inserted into the bolt hole 603 and drive the workpiece to rotate.

[0054] Sensor probe 8 (such as Figure 12-14As shown): the number of the sensor probes 8 is eight, including an upper brake surface detection probe 801, a lower brake surface detection probe 802, a groove surface detection probe 803 for detecting damage to the grooved part of the brake disc 6, a small outer circle detection probe 805 for detecting the brake disc, and four detection probes for detecting the inner / outer end surfaces of the inner circle 601 of the brake disc 6, the four detection probes are respectively a first detection probe 804, a second detection probe 806, a third detection probe 807 and a fourth detection probe 808, and the eight sensor probes 8 respectively perform eddy current flaw detection on the upper brake surface 605, the lower brake surface 606, the groove surface 604, the small outer circle surface 607, and the first outer end surface 6011, the second outer end surface 6012, the first inner end surface 6013 and the second inner end surface 6014 of the inner circle of the brake disc.

[0055] The upper brake surface detection probe 801 and the lower brake surface detection probe 802 are mounted on the frame 102 in a manner that allows them to move in six directions: up, down, left, right, front, and rear. The grooved surface detection probe 803 is mounted on the frame 102 in a manner that allows them to move in four directions: up, down, front, and rear. The upper brake surface detection probe 801, the lower brake surface detection probe 802, the small outer circle detection probe 805, the grooved surface detection probe 803, and the second detection probe 806 are all driven by the measuring slide 10 to slide in the front and rear directions. The third detection probe 807 and the fourth detection probe 808 are mounted on the base 101.

[0056] More specifically, the upper brake surface detection probe 801 and the lower brake surface detection probe 802 are both installed on the first lifting mechanism 1501, which can realize the movement of the upper brake surface detection probe 801 and the lower brake surface detection probe 802 in the upper and lower directions. At the same time, the first lifting mechanism 1501 is installed on the linear slide 14 to realize the movement of the upper brake surface detection probe 801 and the lower brake surface detection probe 802 in the left and right directions. The linear slide 14 is fixed on the measuring slide 10 to realize the movement of the upper brake surface detection probe 801 and the lower brake surface detection probe 802 in the front and rear directions; the grooved surface detection probe 803 is installed on the second lifting mechanism 1502 to realize the movement of the grooved surface detection probe 803 in the upper and lower directions. At the same time, the second lifting mechanism 1502 is installed on the measuring slide 10 to realize the movement of the grooved surface detection probe 803 in the front and rear directions. A central fixing rod 1307 is also fixed in the hollow cavity of the hollow shaft 1301 of the rotating mechanism 13. The first detection probe 804 is arranged at the end of the central fixing rod 1307. The first detection probe 804 is used to perform eddy current flaw detection on the second outer end surface 6012 of the brake disc.

[0057] When in use, the measuring slide 10 drives the upper brake surface detection probe 801 and the lower brake surface detection probe 802 to move forward and backward, the first lifting mechanism 1501 drives the upper brake surface detection probe 801 and the lower brake surface detection probe 802 to move upward and downward, and the linear slide 14 drives the upper brake surface detection probe 801 and the lower brake surface detection probe 802 to move back and forth in the horizontal direction to scan and detect the upper and lower brake surfaces of the brake disc 6. In addition, a groove is provided on the upper brake surface of the brake disc 6 near the installation inner circle 601. In order to perform flaw detection on the groove, the measuring slide 10 needs to drive the groove surface detection probe 803 forward during measurement, and drive the groove surface detection probe 803 downward through the lifting cylinder to ensure that the groove surface detection probe 803 falls into the groove before measurement can be performed.

[0058] Scanner 9 (such as Figure 1 As shown): It also includes a barcode scanner 9, which is used to scan the QR code on the brake disc 6, associate the QR code on the brake disc 6 with the measurement data, and realize a one-to-one correspondence between the QR code and the measurement data. The barcode scanner 9 is installed on the measuring slide 10 through the barcode scanner 9 bracket, and the barcode scanner 9 can move in the front and rear directions along the measuring slide 10.

[0059] The workflow after starting the brake disc 6 eddy current flaw detection equipment is as follows:

[0060] The first step is to start the natural frequency detection process.

[0061] S1, the initial state of the lifting cylinder is the lifting state, the lifting cylinder lifts the lifting column 1101 as a whole, and places the brake disc 6 on the lifting column 1101;

[0062] S2, the natural frequency rotating cylinder 704 drives the industrial microphone 703 to rotate around the rotation axis so that its sound input port faces upward;

[0063] S3, triggering the electromagnetic valve in the knocking hammer 702, the knocking hammer 702 rises, knocks the workpiece once, and then falls immediately after knocking. At the same time, the industrial microphone 703 collects audio signals and transmits the collected signals to the calculation software. The natural frequency value of the workpiece is calculated by the software, and the natural frequency detection is completed. At the same time, the natural frequency rotating cylinder 704 drives the industrial microphone 703 to rotate around the rotation axis so that its sound input port faces downward;

[0064] S4. The lifting cylinder drives the lifting column 1101 to fall back as a whole, and the brake disc 6 falls onto the positioning mechanism 2.

[0065] Step 2: The eddy current testing process begins

[0066] S5, the measuring slide 10 drives the upper brake surface detection probe 801, the lower brake surface detection probe 802, the groove surface detection probe 803, the small outer circle detection probe 805 and the second detection probe 806 to move forward and reach the set detection position, and the groove surface detection probe 803 is driven by the second lifting mechanism 1502 to descend into the groove;

[0067] S6, the cylinder of the lever 503 descends, the lever 503 is inserted into the bolt hole 603 of the brake disc 6, and the motor of the lever 503 drives the lever 503 to rotate, thereby driving the brake disc 6 to rotate on the positioning sleeve 204;

[0068] S7, start the barcode scanner 9 to scan the brake disc 6. After the scanning is successful, the linear slide 14 drives the upper brake surface detection probe 801 and the lower brake surface detection probe 802 to move back and forth to scan and detect the upper and lower brake surfaces of the brake disc 6. At the same time, the grooved surface detection probe 803, the small outer circle detection probe 805, the first detection probe 804, the second detection probe 806, the third detection probe 807 and the fourth detection probe 808 are respectively aligned with the grooved surface 604, the small outer circle surface 607, the first outer end surface 6011, the second outer end surface 6012, the first inner end surface 6013, and the second inner end surface 6014 of the brake disc 6 for detection;

[0069] S8. After the detection is completed, the motor of the lever 503 stops rotating, the linear slide 14 is reset, and the cylinder of the lever 503 rises and retreats. The grooving cylinder drives the grooving surface detection probe 803 to rise, and the measuring slide 10 drives the barcode scanner 9, the upper brake surface detection probe 801, the lower brake surface detection probe 802, the grooving surface detection probe 803, the small outer circle detection probe 805 and the second detection probe 806 to retreat. The lifting cylinder rises to lift the brake disc 6 after the flaw detection, and the eddy current flaw detection of the brake disc 6 is completed. A qualified or unqualified signal is output according to the detection result.

[0070] The positioning sleeve 204 of the present invention is installed on the end of the central column 201 in a manner that it can rotate around its own axis. The brake disc 6 is sleeved on the outside of the positioning sleeve 204. The brake disc 6 is rotated by the movement of the lever 503 mechanism. The positioning sleeve 204 rotates synchronously with the brake disc 6. The positioning sleeve 204 will not cause friction with the center hole 602 of the brake disc 6, thereby ensuring the smooth rotation of the brake disc 6. The brake disc 6 can also be rotated at high speed to improve the detection efficiency.

[0071] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0072] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A brake disc eddy current flaw detection device, comprising a base (101) and a frame (102), characterized in that: It also includes a positioning mechanism (2), a lever (503) mechanism, and a plurality of sensor probes (8) for eddy current flaw detection, wherein the positioning mechanism (2) is arranged on the base (101), the positioning mechanism (2) includes a central column (201), a supporting column (203), a positioning sleeve (204) and an elastic supporting device (3), a plurality of supporting columns (203) are arranged circumferentially around the central column (201), and the positioning sleeve (204) is installed on the end of the central column (201) through the elastic supporting device (3) in a manner that it can rotate around its own axis; The lever (503) mechanism is arranged above the positioning mechanism (2) through a displacement seat (1308) to realize the movement of the lever (503) mechanism in four directions: up, down, front, and back. The lever (503) mechanism comprises a lever assembly and a rotating mechanism (13) for driving the lever assembly to rotate. A plurality of sensor probes (8) are mounted on a frame (102) or a base (101). A support bearing (205) is also provided at the end of the support column (203), and the support bearing (205) is mounted on the inner side or / and the outer side of the support column (203).

2. The brake disc eddy current flaw detection equipment according to claim 1, characterized in that: The invention also comprises a natural frequency detection device (7), wherein the natural frequency detection device (7) comprises a vertical mounting plate (701), a knocking hammer (702), an industrial microphone (703), and a lifting device (11) for supporting the detection of a brake disc (6); the knocking hammer (702) and the industrial microphone (703) are mounted on the vertical mounting plate (701); the industrial microphone (703) is rotatably mounted on the vertical mounting plate (701) and is arranged on one side of the knocking hammer (702); when the industrial microphone (703) rotates around the rotation axis, the sound input port of the industrial microphone (703) can be directed upward or downward.

3. The brake disc eddy current flaw detection equipment according to claim 2, characterized in that: The lifting device (11) comprises a plurality of lifting columns (1101), a support plate (1102) and a lifting cylinder. The plurality of lifting columns (1101) are arranged around the positioning mechanism (2) and the plurality of lifting columns (1101) are arranged on the support plate (1102). The support plate (1102) is mounted on the output shaft of the lifting cylinder to achieve overall lifting and lowering of the lifting columns (1101).

4. The brake disc eddy current flaw detection equipment according to claim 1, characterized in that: It also includes a plurality of guide rails (202), wherein the plurality of guide rails (202) are circumferentially arranged around the central column (201), and the plurality of support columns (203) are respectively mounted on the respective guide rails (202) in a manner that they can move forward and backward along the guide rails (202), and a locking mechanism is also provided between the guide rails (202) and the support columns (203).

5. The brake disc eddy current flaw detection equipment according to claim 1, characterized in that: The rotating mechanism (13) comprises a hollow shaft (1301), a bearing sleeve (1302), and a synchronous wheel (1303); the bearing sleeve (1302) is sleeved on the outer side of the hollow shaft (1301), and the bearing sleeve (1302) and the hollow shaft (1301) are connected via a bearing; the bearing sleeve (1302) is fixed on the displacement seat (1308); a synchronous wheel (1303) is fixedly sleeved on one end of the hollow shaft (1301), and a lever assembly (5) is provided on the other end of the hollow shaft (1301).

6. The brake disc eddy current flaw detection equipment according to claim 5, characterized in that: The lever assembly (5) comprises a lever sleeve (501), a spring (502) and a lever (503); the lever sleeve (501) is sleeved on the outside of the lever (503), and the lever sleeve (501) is connected to the lever (503) via the spring (502); the lever assembly (5) is mounted on one end of the hollow shaft (1301) via a transverse connecting plate (308).

7. The brake disc eddy current flaw detection equipment according to claim 1, characterized in that: The elastic support device (3) comprises a push rod (301), a spring (502) and a positioning sleeve connecting rod (302); the positioning sleeve (204) is installed on one end of the positioning sleeve connecting rod (302) via a bearing (12); the other end of the positioning sleeve connecting rod (302) is connected to the push rod (301) via a spring (502); a hollow cavity is provided in the central column (201), and the elastic support device (3) is installed in the hollow cavity of the central column (201).

8. The brake disc eddy current flaw detection equipment according to claim 5, characterized in that: The number of the sensor probes (8) is eight, including an upper brake surface detection probe (801), a lower brake surface detection probe (802), a grooved surface detection probe (803) for detecting damage to the grooved portion of the brake disc (6), a detection probe (805) for detecting the small outer cylindrical surface of the brake disc, and four detection probes for detecting the inner / outer end surfaces of the mounting inner circle (601) of the brake disc (6). The eight sensor probes (8) respectively perform eddy current flaw detection on the upper brake surface (605), the lower brake surface (606), the grooved surface (604), the small outer cylindrical surface (607), and the first outer end surface (6011), the second outer end surface (6012), the first inner end surface (6013) and the second inner end surface (6014) of the mounting inner circle of the brake disc.

9. The brake disc eddy current flaw detection equipment according to claim 8, characterized in that: The upper brake surface detection probe (801) and the lower brake surface detection probe (802) are installed on a first lifting mechanism (1501), and the first lifting mechanism (1501) is installed on a linear slide (14), and the linear slide (14) is fixed on a measuring slide (10); the groove surface detection probe (803) is installed on a second lifting mechanism (1502), and the second lifting mechanism (1502) is installed on the measuring slide (10); a central fixing rod (1307) is also fixed in the hollow cavity of the hollow shaft (1301) of the rotating mechanism (13), and one of the detection probes for detecting the inner / outer end surface of the inner circle (601) of the brake disc (6) is arranged at the end of the central fixing rod (1307).

10. The brake disc eddy current flaw detection equipment according to claim 1, characterized in that: The positioning mechanism (2) further comprises a synchronous adjustment device (4), wherein the synchronous adjustment device (4) comprises an adjustment sleeve (401) and a plurality of connecting rods (402), wherein the number of the connecting rods (402) matches the number of the supporting columns (203), the adjustment sleeve (401) is sleeved on the outer side of the central column (201) in a manner capable of sliding up and down along the central column (201), and the adjustment sleeve (401) is connected to the plurality of supporting columns (203) via the plurality of connecting rods (402).

11. The brake disc eddy current flaw detection equipment according to claim 1, characterized in that: It also includes a code scanner (9), which is installed on the measuring slide (10) through a code scanner (9) bracket, and the code scanner (9) can move in the front and rear directions along the measuring slide (10).

12. The brake disc eddy current flaw detection equipment according to claim 7, characterized in that: After the lower part of the push rod (301) extends out of the central column (201), it is installed on a displacement platform (307) through a connecting plate (308). The displacement platform (307) enables the push rod (301) to be adjusted in height in the upward and downward directions. The elastic force of the spring (502) is changed by adjusting the height of the push rod (301).

13. The brake disc eddy current flaw detection equipment according to claim 12, characterized in that: It also comprises a knob (309), wherein the knob (309) is installed in conjunction with the connecting plate (308), and the height of the connecting plate (308) is adjusted by rotating the knob (309), thereby achieving adjustment of the height of the push rod (301).

14. The brake disc eddy current flaw detection equipment according to claim 7, characterized in that: The elastic support device (3) also includes a limiting device capable of limiting the distance that the positioning sleeve (204) moves up and down.

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