Brake disc assembly detection equipment and detection method thereof

Abstract

The invention relates to the technical field of brake disc detection, in particular to brake disc assembly detection equipment and a detection method thereof, and the detection equipment comprises a positioning tool which is used for clamping and positioning a brake disc assembly in an end jump amount detection process and detecting the type of the brake disc assembly borne by the positioning tool; the end jump detection device comprises a moving mechanism and a detection mechanism, and the moving mechanism drives the detection mechanism to move among a first detection position, a second detection position and a third detection position; the detection mechanism is used for detecting the end jump amount of the brake disc assembly. The device has the advantages that four types of brake disc assemblies can be recognized through the electromagnetic switches and the laser correlation sensors, the assembly error rate is greatly reduced, and the automobile assembly quality is improved. The end jump detection mechanism is provided with a three-stage loading structure of a sensor, can detect three brake discs with different diameter specifications, guarantees the same detection position, and improves the detection flexibility and applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of brake disc detection, and specifically provides a brake disc assembly detection device and a detection method thereof. Background Art

[0002] When the car brakes, the brake pads and the end face of the brake disc produce friction, forming a braking resistance, thereby achieving the braking of the car. The brake disc is directly connected to the wheel hub bearing to form a brake disc assembly. The braking performance of the brake disc is closely related to the assembly quality of the brake disc assembly and the end face runout. There are many specifications of brake discs and wheel hub bearings. If the specifications of the two do not match during the assembly process or do not match the required model of the overall vehicle and are not corrected in time, it will bring a lot of tedious work to the subsequent automobile quality control. If the assembly quality is poor, the end face runout of the brake disc does not meet the process requirements, which will cause brake tremor, thereby affecting the braking effect, driving safety and comfort of the car.

[0003] Most of the existing brake disc detection technologies only detect the end runout of the brake disc itself, and the detection tooling usually includes a support positioning platform, and the support positioning platform and its upper plane directly support the brake disc. The support positioning platform cooperates with the rotating clamping mechanism above to realize the positioning and rotation of the brake disc. The support positioning platform cannot accommodate the wheel hub bearing, and cannot detect the end runout of the brake disc assembly equipped with the wheel hub bearing, nor can it detect the matching of the specifications of the brake disc and the wheel hub bearing assembly. In addition, the support positioning platform needs to be equipped with a rotating mechanism, which not only increases the complexity of the detection tooling, but also introduces more factors that may affect the detection accuracy, and will also increase the mechanical failure points and reduce the service life of the tooling. For example: The Chinese patent announcement number is CN219829814U, the announcement date is October 13, 2023, and the name is "A brake disc end runout detection device". The disclosed support positioning platform can only position the brake disc, but cannot position and detect the end runout of the brake disc assembly equipped with the wheel hub bearing; at the same time, the support positioning platform cannot rotate, and a rotating mechanism is required if it needs to rotate. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a brake disc assembly detection device and a detection method thereof, which realizes the positioning of four brake disc assemblies consisting of two different specifications of wheel hub bearings and two different specifications of brake discs through positioning tooling, and can identify four types of brake disc assemblies through electromagnetic switches and laser beam sensors, thereby greatly reducing the assembly error rate and improving the automobile assembly quality.

[0005] An embodiment of the first aspect of the present invention provides a brake disc assembly detection device, comprising: a positioning tool, the positioning tool is used to clamp and position the brake disc assembly during the end runout detection process, and detect the type of brake disc assembly it carries; an end runout detection device, the end runout detection device includes a moving mechanism and a detection mechanism, the moving mechanism drives the detection mechanism to move between a first detection position, a second detection position and a third detection position; the detection mechanism is used to detect the end runout of the brake disc assembly.

[0006] Furthermore, the positioning tooling includes a support seat, a positioning column, a laser beam sensor and at least one electromagnetic switch; a receiving cavity is provided on the top of the support seat; the positioning column is arranged in the receiving cavity along the vertical direction; wherein, the receiving cavity and / or the positioning column are used to place the brake disc assembly; the electromagnetic switch and the laser beam sensor are used to detect the specifications of the brake disc assembly; the top of the support seat has a positioning base surface; the surface roughness of the positioning base surface is less than or equal to 0.8μm.

[0007] Furthermore, there are two magnetic switches, which are respectively arranged at the upper outer edge of the support base through mounting brackets; the laser beam sensor includes a transmitting end and a receiving end, and a first through hole and a second through hole are relatively opened on the support base, and the receiving end and the transmitting end are respectively arranged at the first through hole and the second through hole, and are located at the outer edge of the support base; a third through hole is opened on the positioning column, and the first through hole, the second through hole and the third through hole are located on the same straight line, so that the receiving end can receive the laser emitted by the transmitting end.

[0008] Furthermore, the connection line of the two electromagnetic switches is arranged to intersect with the straight line where the first through hole, the second through hole and the third through hole are located.

[0009] Furthermore, the connection line of the two electromagnetic switches is arranged to cross the straight line where the first through hole, the second through hole and the third through hole are located.

[0010] Furthermore, the moving mechanism includes a mounting seat assembly, a lifting assembly, a transverse movement assembly and a limit assembly; the lifting assembly is connected to the mounting seat assembly; the transverse movement assembly is connected to the output end of the lifting assembly; a connecting plate is provided on the transverse movement assembly, and the limit assembly and the detection mechanism are both provided on the connecting plate; a limit block is provided on the limit assembly; when the free end of the limit block moves into the travel of the transverse movement assembly, the detection mechanism is located at the third detection position.

[0011] Furthermore, the lifting assembly includes a motor and a screw assembly, the fixed end of the motor is connected to the mounting seat assembly; the output end of the motor is connected to one end of the screw assembly, and the other end of the screw assembly is connected to the mounting seat assembly.

[0012] Furthermore, the transverse movement assembly includes a first cylinder, which is connected to the nut of the screw assembly; a connecting plate is arranged at the output end of the first cylinder; the connecting plate has an avoidance opening; the limit assembly includes a second cylinder, which is connected to the connecting plate, and the limit block is connected to the second cylinder; when the second cylinder is in a non-extended state, the free end of the limit block is located in the avoidance opening; when the second cylinder is in an extended state, the free end of the limit block passes through the avoidance opening and is located within the stroke of the first cylinder.

[0013] Furthermore, the moving direction of the second cylinder is perpendicular to the moving direction of the first cylinder.

[0014] A brake disc assembly detection method is implemented based on the above brake disc assembly detection device, comprising: S1: Place the brake disc assembly on the positioning fixture so that the brake disc of the brake disc assembly is suspended above the positioning fixture.

[0015] S2: Read the electromagnetic switch signal and laser beam sensor signal on the positioning fixture to determine whether the brake disc assembly type is consistent with the set brake disc assembly type; if the judgment result is inconsistent, replace the brake disc assembly and re-judge; if the judgment result is consistent, perform end jump detection of the brake disc assembly.

[0016] S3: After the detection mechanism of the end runout detection device moves to a position that matches the set brake disc assembly diameter specification, an external force acts on the brake disc assembly, causing the wheel hub bearing of the brake disc assembly to rotate and drive the brake disc of the brake disc assembly to rotate, and the detection mechanism detects the end runout of the brake disc assembly.

[0017] S4: After the test is completed, the external force is removed to stop the wheel hub bearing from rotating, the test mechanism is reset, the brake disc assembly is removed, and the test is completed.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects: (1) The required rotational movement of the brake disc during end runout detection is achieved by positioning the tooling and utilizing the hub bearing of the brake disc assembly. This eliminates the need to add an additional rotation mechanism, reduces hardware costs, and lowers the mechanical failure rate.

[0019] (2) The positioning fixture realizes the positioning of four brake disc assemblies consisting of two different specifications of wheel hub bearings and two different specifications of brake discs, thereby effectively reducing the number of positioning fixtures required and further reducing hardware costs.

[0020] (3) Four types of brake disc assemblies can be identified through electromagnetic switches and laser beam sensors, greatly reducing the assembly error rate and improving the quality of automobile assembly.

[0021] (4) The end jump detection mechanism is equipped with a three-level loading structure for the sensor, which can detect brake discs of three different diameters while ensuring the same detection position, thus improving the flexibility and applicability of the detection.

[0022] (5) By setting up a sensor protection cover, the protection of the sensor is improved, economic losses are reduced, and the safety of the equipment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural schematic diagram of a brake disc assembly detection device provided according to an embodiment of the present invention; Figure 2 is a structural schematic diagram of a brake disc assembly provided according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a positioning tool provided according to an embodiment of the present invention; Figure 4 According to an embodiment of the present invention, Figure 3 Sectional view of the middle positioning tool along AA; Figure 5 is a structural schematic diagram of an end jump detection device provided according to an embodiment of the present invention; Figure 6 It is a schematic structural diagram of the assembly of a mounting base assembly, a lifting assembly and a lateral movement assembly provided in an embodiment of the present invention; Figure 7 It is a structural schematic diagram of a limit assembly, a detection mechanism and a connecting plate provided according to an embodiment of the present invention.

[0024] The reference numerals include: 1, brake disc assembly; 11, brake disc; 12, wheel hub bearing; 2, platform; 3, positioning tool; 31, support seat; 311, first through hole; 312, second through hole; 313, accommodating cavity; 314, positioning base surface; 315, positioning column mounting seat; 32, positioning column; 321, third through hole; 33, laser beam sensor; 34, electromagnetic switch; 35, mounting bracket; 4, end jump detection device; 41, moving mechanism; 411, Mounting seat assembly; 4111, base; 4112, fixing seat; 4113, connecting seat; 412, lifting assembly; 4121, motor; 4122, screw assembly; 413, lateral movement assembly; 4131, first cylinder; 4132, connecting plate; 4133, avoidance; 414, limiting assembly; 4141, limiting block; 4142, second cylinder; 42, detecting mechanism; 421, sensor; 422, sensor fixing block; 423, sensor protective cover. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the invention more clear, the invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the invention and do not constitute a limitation of the invention.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0030] like Figures 1 to 7 As shown, a brake disc assembly detection device provided by an embodiment of the present invention comprises: a platform 2, a positioning fixture 3 and an end jump detection device 4. The positioning fixture 3 and the end jump detection device 4 are both arranged on the platform 2. The positioning fixture 3 is used to clamp and position the brake disc assembly 1 during the end jump detection process, and detect the type of the brake disc assembly 1 carried by it. The end jump detection device 4 is used to detect the end jump amount of the brake disc assembly 1 during the end jump detection process.

[0031] Brake disc assembly 1 Figure 2As shown, it includes a brake disc 11 and a wheel hub bearing 12, and the wheel hub bearing 12 has a flange. The brake disc 11 is connected to the flange of the wheel hub bearing 12. In this embodiment, the brake disc 11 is divided into two specifications of thin and thick. The wheel hub bearing 12 is divided into two specifications of large and small according to height and diameter. The brake discs 11 of thin and thick specifications are assembled with the wheel hub bearings 12 of large and small specifications to form four types of brake disc assemblies 1. The thick brake disc 11 is combined with the large wheel hub bearing 12 to form an A-type brake disc assembly. The thick brake disc is combined with the small wheel hub bearing 12 to form a B-type brake disc assembly. The thin brake disc 11 is combined with the large wheel hub bearing 12 to form a C-type brake disc assembly. The thin brake disc 11 is combined with the small wheel hub bearing 12 to form a D-type brake disc assembly.

[0032] Positioning tool 3 Figure 3 , Figure 4 As shown, it includes a support seat 31, a positioning column 32, a laser beam sensor 33 and at least one electromagnetic switch 34. The support seat 31 is dumbbell-shaped, with a receiving cavity 313 on the top, and the positioning column 32 is arranged inside the receiving cavity 313 along the vertical direction. The receiving cavity 313 and / or the positioning column 32 are used to place brake disc assemblies 1 of different specifications. The electromagnetic switch 34 and the laser beam sensor 33 are used to detect the type of the brake disc assembly 1.

[0033] The top of the support seat 31 has a positioning base surface 314, and the surface roughness of the positioning base surface 314 is less than or equal to 0.8μm. The surface roughness of the positioning base surface 314 is set to be less than or equal to 0.8μm, mainly to avoid the influence of the end jump detection accuracy caused by the roughness of the contact surface between the support seat 31 and the brake disc assembly 1. In this embodiment, a positioning column mounting seat 315 is provided in the accommodating cavity 313, and the upper surface of the positioning column mounting seat 315 is provided with a mounting stop. The mounting portion of the positioning column 32 is located in the mounting stop and is fixed to the positioning column mounting seat 315 by bolts.

[0034] When the brake disc assembly 1 is placed on the positioning fixture 3, if the outer diameter of the hub bearing 12 matches the inner diameter of the accommodating cavity 313, and the inner diameter of the hub bearing 12 is larger than the positioning column 32, then the end of the hub bearing 12 away from the brake disc 11 is placed inside the accommodating cavity 313, and the outer ring of the hub bearing 12 is used for positioning. At this time, the outer ring of the hub bearing 12 and the inner wall of the accommodating cavity 313 are clearance-matched, and the clearance is 0.01mm~0.05mm. If the outer diameter of the hub bearing 12 is smaller than the inner diameter of the accommodating cavity 313, and the inner diameter of the hub bearing 12 matches the positioning column 32, then the end of the hub bearing 12 away from the brake disc 11 is placed inside the accommodating cavity 313, and the inner ring of the hub bearing 12 is used for positioning. At this time, the inner ring of the hub bearing 12 and the outer surface of the positioning column 32 are clearance-matched, and the clearance is 0.01mm~0.05mm. In the above manner, the movement of the hub bearing 12 in both the vertical direction and the horizontal direction is restricted.

[0035] In this embodiment, there are two electromagnetic switches 34, and the two electromagnetic switches 34 are respectively arranged at the outer edge of the upper part of the support seat 31 through the mounting brackets 35. The mounting brackets 35 are provided with elongated holes, and bolts pass through the elongated holes to fix the mounting brackets 35 on the support seat 31. By adjusting the position of the bolts in the elongated holes, the height of the mounting brackets 35 can be adjusted, thereby realizing the height adjustment of the electromagnetic switches 34.

[0036] When the brake disc assembly 1 is placed on the positioning fixture 3, the brake disc 11 is suspended above the support seat 31. The installation height of the electromagnetic switch 34 is determined by the distance between the suspended lower surface of the brake disc 11 and the positioning base surface 314. Specifically, the following conditions should be met: the lower surface of the thick brake disc 11 is within the sensing distance of the electromagnetic switch 34, while the lower surface of the thin brake disc 11 is not within the sensing distance of the electromagnetic switch 34. Through the output signal of the electromagnetic switch 34, it can be identified whether the currently loaded brake disc 11 is thick or thin.

[0037] In this embodiment, the sensing distance of the electromagnetic switch 34 to the brake disc 11 is 2 mm. When the brake disc 11 carried by the positioning fixture 3 is thick, the lower surface of the brake disc 11 is located within the effective sensing distance of the electromagnetic switch 34, and the electromagnetic switch 34 outputs a negative signal. When the brake disc 11 carried by the positioning fixture 3 is thin, the lower surface of the brake disc 11 is not within the effective sensing distance of the electromagnetic switch 34, and the electromagnetic switch 34 outputs a positive signal. Through the positive and negative signals output by the electromagnetic switch 34, it can be identified whether the brake disc 11 of the brake disc assembly 1 is thin or thick.

[0038] The laser beam sensor 33 includes a transmitting end and a receiving end. The support seat 31 is provided with a first through hole 311 and a second through hole 312, respectively. The transmitting end and the receiving end are arranged at the first through hole 311 and the second through hole 312, and are relatively located at the outer edge of the support seat 31. The positioning column 32 is provided with a third through hole 321, and the first through hole 311, the second through hole 312 and the third through hole 321 are all located on the same straight line to ensure that the receiving end can receive the laser emitted by the transmitting end. The straight line where the first through hole 311, the second through hole 312 and the third through hole 321 are located is located below the end of the small hub bearing 12 away from the brake disc, but is located above the end of the large hub bearing 12 away from the brake disc.

[0039] When the end of the small hub bearing 12 away from the brake disc 11 is located in the accommodating chamber 313, the third through hole 321 will not be blocked, and the receiving end can receive the laser emitted by the transmitting end. At this time, the receiving end sends a positive signal. When the end of the large hub bearing 12 away from the brake disc 11 is located in the accommodating chamber 313, the laser emitted by the transmitting end will be blocked by the large hub bearing 12, resulting in the receiving end being unable to receive the laser emitted by the transmitting end. At this time, the receiving end sends a negative signal.

[0040] Furthermore, the connection line of the two electromagnetic switches 34 is arranged to intersect with the straight line where the first through hole 311 , the second through hole 312 and the third through hole 321 are located.

[0041] Furthermore, the connection line of the two electromagnetic switches 34 is arranged to cross the straight line where the first through hole 311 , the second through hole 312 and the third through hole 321 are located.

[0042] End jump detection device 4 Figures 5 to 7 As shown, it includes a moving mechanism 41 and a detection mechanism 42. The moving mechanism 41 drives the detection mechanism 42 to move between a first detection position, a second detection position and a third detection position. The detection mechanism 42 is used to detect the end runout of the brake disc assembly 1.

[0043] The moving mechanism 41 includes a mounting seat assembly 411, a lifting assembly 412, a transverse movement assembly 413 and a limit assembly 414. The mounting seat assembly 411 is fixed on the platform 2, the lifting assembly 412 is connected to the mounting seat assembly 411, and the transverse movement assembly 413 is connected to the output end of the lifting assembly 412. A connecting plate 4132 is provided on the transverse movement assembly 413, and the limit assembly 414 and the detection mechanism 42 are both connected to the connecting plate 4132 and are located on the same side of the connecting plate 4132. A limit block 4141 is provided on the limit assembly 414. When the limit block 4141 is located within the travel of the transverse movement assembly 413, the detection mechanism 42 is located at the third detection position.

[0044] The mounting seat assembly 411 includes a base 4111, a fixing seat 4112 and a connecting seat 4113. The base 4111 is fixed on the platform 2. The fixing seat 4112 is arranged on the base 4111, and the connecting seat 4113 is connected to the fixing seat 4112.

[0045] The lifting assembly 412 includes a motor 4121 and a screw assembly 4122 , the fixed end of the motor 4121 is connected to the connecting seat 4113 , the output end of the motor 4121 is connected to one end of the screw assembly 4122 , and the other end of the screw assembly 4122 is connected to the connecting seat 4113 .

[0046] The transverse movement assembly 413 includes a first cylinder 4131 and a connecting plate 4132. The first cylinder 4131 is connected to the nut of the screw assembly 4122. The connecting plate 4132 is arranged at the output end of the first cylinder 4131, and the connecting plate 4132 has an avoidance opening 4133. The first cylinder 4131 is a slide cylinder, and when the slide of the first cylinder 4131 is not extended, the position of the detection mechanism 42 is the first detection position. When the slide of the first cylinder 4131 moves to the maximum stroke position, the position of the detection mechanism 42 is the second detection position. When the limit block 4141 of the limit assembly 414 is located within the end stroke of the first cylinder 4131, the position of the detection mechanism 42 is the third detection position.

[0047] The limiting assembly 414 includes a second cylinder 4142 and a limiting block 4141. The second cylinder 4142 is connected to the connecting plate 4132, and the limiting block 4141 is connected to the second cylinder 4142. The second cylinder 4142 is a slide cylinder. The moving direction of the second cylinder 4142 is perpendicular to the moving direction of the first cylinder 4131. The limiting block 4141 includes a fixed portion and an extended portion, the fixed portion is connected to the slide of the second cylinder 4142, and the extended portion is located in the avoidance opening 4133.

[0048] When the slide of the second cylinder 4142 is not extended, the extended portion of the limit block 4141 is located in the avoidance opening 4133. When the slide of the second cylinder 4142 is in an extended state, the extended portion of the limit block 4141 passes through the avoidance opening 4133 and is located in the end stroke of the first cylinder 4131.

[0049] The three detection positions are mainly set to detect the end runout of the outer edge of the brake disc 11 of three different diameters: large, medium and small.

[0050] The detection mechanism 42 includes a sensor 421, a sensor fixing block 422 and a sensor protective cover 423. The sensor protective cover 423 has a through hole. The sensor 421 is fixed to the connecting plate 4132 through the sensor fixing block 422. The sensor protective cover 423 is connected to the connecting plate 4132 and is located below the sensor fixing block 422. The sensing part of the sensor 421 is located in the through hole of the sensor protective cover 423. The sensor protective cover 423 is mainly provided to prevent the sensor 421 from being damaged when it collides with other parts. In this embodiment, the sensor 421 is a non-contact laser sensor.

[0051] A brake disc assembly detection method is implemented based on the above brake disc assembly detection device, comprising: S1: Place the brake disc assembly 1 on the positioning fixture 3, the flange of the wheel hub bearing 12 of the brake disc assembly 1 fits with the positioning base surface 314 of the positioning fixture 3, the end of the wheel hub bearing 12 away from the brake disc 11 is located in the accommodating cavity 313, and the brake disc 11 is suspended above the positioning base surface 314.

[0052] S2: Read the electromagnetic switch 34 signal and the laser beam sensor 33 signal to determine whether the type of the brake disc assembly 1 matches the set type of the brake disc assembly 1. If not, replace the brake disc assembly 1 and read the electromagnetic switch 34 signal and the laser beam sensor 33 signal again. If yes, perform the end jump detection of the brake disc assembly 1.

[0053] The electromagnetic switch 34 and the laser beam sensor 33 are used together. When both the electromagnetic switch 34 and the laser beam sensor 33 output negative signals, the brake disc assembly of type A is detected. When both the electromagnetic switch 34 and the laser beam sensor 33 output positive signals, the brake disc assembly of type D is detected. When the electromagnetic switch 34 outputs a negative signal and the laser beam sensor 33 outputs a positive signal, the brake disc assembly of type B is detected. When the electromagnetic switch 34 outputs a positive signal and the laser beam sensor 33 outputs a negative signal, the brake disc assembly of type C is detected.

[0054] S3: The lifting assembly 412 of the end runout detection device 4 drives the detection mechanism 42 to descend, and the transverse movement assembly 413 drives the detection mechanism 42 to transversely move to a position that matches the diameter of the brake disc 11. External force acts on the brake disc assembly 1, and the wheel hub bearing 12 of the brake disc assembly 1 rotates, driving the brake disc 11 to rotate, and the sensor 421 of the detection mechanism 42 detects the end runout of the brake disc assembly 1.

[0055] When the diameter of the brake disc 11 is the smallest, the slide of the first cylinder 4131 is in the initial position, and the detection mechanism 42 is located at the first detection position. When the diameter of the brake disc 11 is the largest, the slide of the first cylinder 4131 drives the detection mechanism 42 to move to the maximum stroke position, and the detection mechanism 42 is located at the second detection position. When the diameter of the brake disc 11 is medium, the slide of the second cylinder 4142 drives the limit block 4141 to move toward the first cylinder 4131, so that the limit block 4141 is located within the stroke of the first cylinder 4131, and the limit block 4141 prevents the movement of the slide of the first cylinder 4131. At this time, the detection mechanism 42 is located at the third detection position.

[0056] S4: After the detection is completed, the external force is removed to stop the wheel hub bearing 12 from rotating, the lifting assembly 412 drives the detection mechanism 42 to reset, and the brake disc assembly 1 is removed to complete the detection.

[0057] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A brake disc assembly testing device, characterized in that: include: A positioning tool, the positioning tool is used to clamp and position the brake disc assembly during the end runout detection process, and detect the type of the brake disc assembly it carries; An end jump detection device, the end jump detection device includes a moving mechanism and a detection mechanism, the moving mechanism drives the detection mechanism to move between a first detection position, a second detection position and a third detection position; the detection mechanism is used to detect the end jump amount of the brake disc assembly.

2. The brake disc assembly detection device according to claim 1, characterized in that: The positioning tooling includes a support seat, a positioning column, a laser beam sensor and at least one electromagnetic switch; A receiving cavity is provided on the top of the support seat; the positioning column is arranged in the receiving cavity along the vertical direction; wherein the receiving cavity and / or the positioning column are used to place the brake disc assembly; the electromagnetic switch and the laser beam sensor are used to detect the specifications of the brake disc assembly; The top of the support seat has a positioning base surface; the surface roughness of the positioning base surface is less than or equal to 0.8 μm.

3. The brake disc assembly detection device according to claim 2, characterized in that: There are two electromagnetic switches, and the two electromagnetic switches are respectively arranged at the outer edge of the upper part of the support seat through mounting brackets. The laser beam sensor includes a transmitting end and a receiving end. A first through hole and a second through hole are relatively formed on the support base. The receiving end and the transmitting end are respectively arranged at the first through hole and the second through hole and are located at the outer edge of the support base. A third through hole is formed on the positioning column. The first through hole, the second through hole and the third through hole are located on the same straight line so that the receiving end can receive the laser emitted by the transmitting end.

4. The brake disc assembly testing device according to claim 3, characterized in that: The connection line of the two electromagnetic switches is arranged to intersect with the straight line where the first through hole, the second through hole and the third through hole are located.

5. The brake disc assembly detection device according to claim 3, characterized in that: The connecting line of the two electromagnetic switches is arranged to cross the straight line where the first through hole, the second through hole and the third through hole are located.

6. The brake disc assembly testing device according to claim 1, characterized in that: The moving mechanism includes a mounting seat assembly, a lifting assembly, a transverse movement assembly and a limit assembly; the lifting assembly is connected to the mounting seat assembly; the transverse movement assembly is connected to the output end of the lifting assembly; a connecting plate is provided on the transverse movement assembly, and the limit assembly and the detection mechanism are both connected to the connecting plate; a limit block is provided on the limit assembly; when the free end of the limit block moves into the stroke of the transverse movement assembly, the detection mechanism is located at the third detection position.

7. The brake disc assembly testing device according to claim 6, characterized in that: The lifting assembly includes a motor and a screw assembly, wherein the fixed end of the motor is connected to the mounting seat assembly; the output end of the motor is connected to one end of the screw assembly, and the other end of the screw assembly is connected to the mounting seat assembly.

8. The brake disc assembly testing device according to claim 7, characterized in that: The traverse assembly comprises a first cylinder, the first cylinder is connected to the screw nut of the screw assembly; the connecting plate is arranged at the output end of the first cylinder; the connecting plate has an avoidance opening; The limiting assembly comprises a second cylinder, the second cylinder is connected to the connecting plate, and the limiting block is connected to the second cylinder; When the second cylinder is in a non-extended state, the free end of the limit block is located in the avoidance opening; When the second cylinder is in an extended state, the free end of the limit block passes through the avoidance opening and is located within the stroke of the first cylinder.

9. The brake disc assembly testing device according to claim 8, characterized in that: The moving direction of the second cylinder is perpendicular to the moving direction of the first cylinder.

10. A brake disc assembly detection method, implemented based on the brake disc assembly detection device according to any one of claims 1 to 9, characterized in that: include: S1: placing the brake disc assembly on the positioning fixture so that the brake disc of the brake disc assembly is suspended above the positioning fixture; S2: reading the electromagnetic switch signal and the laser beam sensor signal on the positioning fixture to determine whether the brake disc assembly type is consistent with the set brake disc assembly type; if the determination result is inconsistent, replacing the brake disc assembly and re-determining; if the determination result is consistent, performing end runout detection of the brake disc assembly; S3: After the detection mechanism of the end runout detection device moves to a position that matches the set brake disc assembly diameter specification, an external force acts on the brake disc assembly to rotate the wheel hub bearing of the brake disc assembly and drive the brake disc of the brake disc assembly to rotate, and the detection mechanism detects the end runout of the brake disc assembly; S4: After the detection is completed, the external force is removed to stop the wheel hub bearing from rotating, the detection mechanism is reset, the brake disc assembly is removed, and the detection is completed.

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