A hole diameter detecting device for brake backplate

Abstract

This invention discloses a hole diameter detection device for brake base plates, comprising a drive motor mounted on the side of a mounting frame, with the top of the mounting frame mounted on a two-axis truss robotic arm. The two-axis truss robotic arm is mounted on a support platform. The drive motor's shaft is coaxially connected to a mounting plate. Several hole diameter detection devices of different models are arranged along the edge of the mounting plate, with a certain distance between connected devices. A linear drive device is also provided on the surface of the support platform, with a clamp on top for holding the brake base plate. In use, the drive motor rotates the mounting plate, causing the different models of internal plug hole diameter measuring heads to point vertically downwards. Each internal plug hole diameter measuring head corresponds to a specific hole on the brake base plate, allowing for simultaneous detection of all holes on the brake base plate surface.

Description

Technical Field

[0001] This utility model relates to the technical field of aperture detection devices, specifically an aperture detection device for a brake base plate. Background Technology

[0002] The brake backing plate is a key component of the brake backing plate assembly. It is a supporting part in the automotive brake system that secures the brake shoe assembly to the brake drum, and is the core of the entire vehicle's braking system. The main function of the brake backing plate is to support and secure the brake shoe assembly to the brake drum, ensuring effective braking during vehicle operation. It is a crucial component of the braking system, directly affecting the vehicle's braking performance and safety.

[0003] The brake backing plate has multiple mounting holes on its surface. To check for defects in the accuracy of these holes, a bore gauge or internal plug gauge is used to inspect each hole individually. However, the brake backing plate has more than one hole, and the holes vary in size. Therefore, it is cumbersome to use different types of internal plug gauge heads or different models of bore gauges when inspecting multiple holes. To address this, we propose a bore gauge inspection device for brake backing plates. Utility Model Content

[0004] This invention provides a hole diameter detection device for brake base plates, which has the advantage of being able to switch between different inner plug hole diameter measuring heads by driving the mounting plate to rotate via a drive motor, and can detect all holes on the surface of the brake base plate at one time, thus solving the problems mentioned in the background art.

[0005] The technical solution of this utility model is implemented as follows: A hole diameter detection device for a brake base plate is designed, including a drive motor, which is mounted on the side of a mounting frame, and the top of the mounting frame is mounted on a two-axis truss robotic arm. The two-axis truss robotic arm is mounted on a support platform. The rotating shaft of the drive motor is coaxially connected to the mounting plate. Several hole diameter detection devices of different models are provided on the edge of the mounting plate. A certain distance is provided between two connected hole diameter detection devices. A linear drive device is also provided on the surface of the support platform. A clamp for holding the brake base plate is provided on the top of the linear drive device.

[0006] Preferably, the support platform is installed on the top of the control cabinet, and a PLC control system is installed inside the control cabinet. The PLC control system is connected to the two-axis gantry robot arm, the drive motor, the aperture detection device, and the linear drive device.

[0007] Preferably, each aperture detection device includes an L-shaped frame, which is detachably connected to the edge of the mounting plate. One end of each L-shaped frame is located outside the edge of the mounting plate. A threaded connection seat is provided on the side of the L-shaped frame away from the mounting plate. The inner hole of the threaded connection seat penetrates the L-shaped frame. A pressure sensor corresponding to the inner hole is installed on the side of the L-shaped frame away from the threaded connection seat. Several inner plug aperture measuring heads are also provided on the edge of the mounting plate and arranged radially thereto. Each inner plug aperture measuring head is of a different model. The top of the inner plug aperture measuring head is threaded into the threaded connection seat. The pin at the top of the inner plug aperture measuring head contacts the pressure sensor.

[0008] Preferably, the pressure sensor is connected to the PLC control system via an electric slip ring, which is coaxially mounted on the shaft of the drive motor.

[0009] Preferably, the two-axis gantry robot arm includes two supports vertically mounted on the top of the support platform, with a strip frame between them. A third guide rail and a third linear drive module are horizontally mounted on one side of the strip frame. The top of the mounting frame is mounted on the third guide rail via a slider, and the mounting frame is also connected to the third linear drive module. The two ends of the strip frame are respectively mounted on a second guide rail via sliders. The second guide rail is perpendicular to the third linear drive module. A second linear drive module parallel to the second guide rail is mounted on the side of one of the supports. The second linear drive module is connected to the strip frame. The second linear drive module and the third linear drive module are respectively connected to the PLC control system.

[0010] Preferably, the linear drive device is perpendicular to the third linear drive module. The linear drive device includes a first guide rail and a first linear drive module mounted on a support platform. The first linear drive module is connected to a PLC control system. A mounting plate is provided above the first guide rail. The mounting plate is connected to the first guide rail via a slider and is connected to the first linear drive module.

[0011] Preferably, the clamp includes a grooved plate disposed on the top of the mounting plate, and the clamp also includes a plurality of positioning blocks. The bottom of the positioning blocks is mounted on a slide that matches the grooved plate. The positioning blocks surround the edge of the brake base plate. The slide is slidably placed in the groove of the grooved plate. Each slide is positioned by fasteners.

[0012] Preferably, a grating ruler is provided parallel to one side of each of the second linear drive module, the third linear drive module, and the first linear drive module. The grating ruler is connected to the PLC control system, and the reading head of the grating ruler is connected to the second linear drive module, the third linear drive module, and the first linear drive module, respectively.

[0013] Compared with the prior art, in use, the drive motor can drive the mounting plate to rotate, so that different models of inner plug diameter measuring heads are vertically downward. That is, by driving the mounting plate to rotate, different inner plug diameter measuring heads can be switched, and the inner plug diameter measuring head models correspond to multiple holes on the brake base plate. In this way, all the holes on the surface of the brake base plate can be detected at one time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the front structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0017] Figure 3 This is a schematic diagram showing the specific structure between the drive motor and the mounting plate in this utility model.

[0018] In the diagram: 1. Control cabinet; 2. Support platform; 3. First linear drive module; 4. Mounting plate; 5. Grating ruler; 6. Operation panel; 7. Bracket; 8. Third guide rail; 9. Second guide rail; 10. Third linear drive module; 11. Strip frame; 12. Mounting bracket; 13. Mounting plate; 14. Drive motor; 15. Inner plug diameter measuring head; 16. L-shaped frame; 17. Second linear drive module; 18. Slot plate; 19. First guide rail; 20. Electric slip ring; 21. Pressure sensor; 22. Threaded connection seat; 23. Positioning block. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Reference Figures 1 to 3This utility model provides a technical solution: a hole diameter detection device for a brake base plate, including a drive motor 14, which is mounted on the side of a mounting bracket 12, and the top of the mounting bracket 12 is mounted on a two-axis truss robotic arm. The two-axis truss robotic arm is mounted on a support platform 2, which is mounted on the top of a control cabinet 1. The support platform 2 is essentially the support for the entire device. A PLC control system is also located inside the control cabinet 1. Figure 1 and Figure 2 As shown, the specific structure of the two-axis gantry robot arm includes two supports 7 vertically mounted on the top of the support platform 2, with a strip frame 11 between them. A third guide rail 8 and a third linear drive module 10 are horizontally mounted on one side of the strip frame 11. Figure 1 As shown, during installation, the top of the mounting bracket 12 is mounted on the third guide rail 8 via a slider, and the mounting bracket 12 is also connected to the third linear drive module 10. This allows the third linear drive module 10 to drive the mounting bracket 12 to move horizontally left and right, causing the drive motor to reciprocate horizontally left and right.

[0021] Next, the two ends of the strip frame 11 are respectively mounted on the second guide rail 9 via sliders. The second guide rail 9 is perpendicular to the third linear drive module 10. A second linear drive module 17, parallel to the second guide rail 9, is provided on the side of one of the brackets 7. The second linear drive module 17 is connected to the strip frame 11, allowing the second linear drive module 17 to drive the strip frame 11 to move linearly up and down along the second guide rail 9. This allows the drive motor 14 to change its height, meaning the drive motor 14 has degrees of freedom in both horizontal and vertical directions. The second linear drive module 17 and the third linear drive module 10 are respectively connected to the PLC control system, allowing the PLC control system to control the movement of the second linear drive module 17 and the third linear drive module 10.

[0022] Furthermore, the shaft of the drive motor 14 is coaxially connected to the mounting plate 13, and the edge of the mounting plate 13 is provided with several different types of hole diameter detection devices, such as... Figure 1 As shown, each aperture detection device includes an L-shaped frame 16, which is detachably connected to the edge of the mounting plate 13. The two are fastened together by bolts, and one end of each L-shaped frame 16 is located outside the edge of the mounting plate 13.

[0023] The L-shaped bracket 16 is provided with threaded connection seats 22 on the side away from the mounting plate 13, such as Figure 3 As shown, the inner hole of the threaded connector 22 passes through the L-shaped bracket 16, and a pressure sensor 21 corresponding to the inner hole is installed on the side of the L-shaped bracket 16 away from the threaded connector 22. That is, the sensing surface of the pressure sensor 21 corresponds to and is coaxially arranged with the inner hole of the threaded connector 22.

[0024] Because the brake base plate has multiple holes, some of which have different diameters, several inner plug diameter measuring heads 15 are radially arranged on the edge of the mounting plate 13 to allow for simultaneous testing of all holes without changing measuring tools. In other words, the diameter testing device also includes these inner plug diameter measuring heads 15. Each inner plug diameter measuring head 15 has a different model, ensuring that each head matches the inner diameter of its corresponding hole. Each inner plug diameter measuring head 15 is detachable, meaning its top is threaded into a threaded connection seat 22.

[0025] Here, it is necessary to explain the inner plug diameter measuring head 15. In reality, the inner plug diameter measuring head 15 is installed at the bottom of the inner hole plug gauge. The inner plug diameter measuring head has multiple telescopic measuring points on its side. When the measuring points come into contact with the inner wall of the hole, they will extend or retract. The measuring points will drive the ejector pin to move upward. Therefore, in this application, the ejector pin at the top of the inner plug diameter measuring head 15 comes into contact with the pressure sensor 21, so that the pressure received by the inner plug diameter measuring head 15 is transmitted to the pressure sensor 21 and sensed by the pressure sensor 21.

[0026] To switch between different models of inner plug diameter measuring heads 15, since there is a certain distance between the two connected diameter detection devices and the included angle between the two adjacent inner plug diameter measuring heads 15 is the same, the drive motor 14 drives the mounting plate 13 to rotate a certain angle to switch the inner plug diameter measuring heads 15 with different signals. Therefore, the drive motor 14 here is a servo motor, which can achieve precise angle control.

[0027] like Figure 3 As shown, since the mounting plate 13 is rotating, in order to achieve rotational power supply, the pressure sensor 21 is connected to the PLC control system through the slip ring 20. The slip ring 20 is coaxially mounted on the shaft of the drive motor 14. Specifically, the rotor of the slip ring 20 is fixed on the shaft and rotates with the shaft, while the stator of the slip ring 20 is mounted on the mounting bracket 12 to keep the stator fixed. Specifically, the terminals of the rotor are connected to the measuring heads 15 of each inner plug diameter, while the terminals on the stator are connected to the controller.

[0028] Furthermore, such as Figure 1 and Figure 2 As shown, the surface of the support platform 2 is also equipped with a linear drive device, and the top of the linear drive device is equipped with a clamp for holding the brake base plate; as shown Figure 1 As shown, the linear drive device is perpendicular to the third linear drive module 10. The linear drive device includes a first guide rail 19 and a first linear drive module 3 set on the support platform 2. The first linear drive module 3 is connected to the PLC control system. It should be noted that the fixture is used to support the brake base plate. The brake base plate has a certain weight, so there are at least two first guide rails 19 here, which are symmetrically arranged.

[0029] A mounting plate 4 is provided above the first guide rail 19. The mounting plate 4 is connected to the first guide rail 19 through a slider. The mounting plate 4 is connected to the first linear drive module 3. Therefore, the mounting plate 4 can move back and forth along the first guide rail 19 under the drive of the first linear drive module 3. The mounting plate 4 can move back and forth, which is equivalent to adding a degree of freedom to the drive motor 14, which is equivalent to giving the drive motor 14 a degree of freedom in the three directions of up and down, left and right and back and forth.

[0030] It should be noted that the advantage of mounting plate 4 on the linear drive device is that, for example... Figure 1 and Figure 2 As shown, the two-axis gantry robot arm is designed to be positioned rearward of the support platform 2. In the initial state, the linear drive device drives the clamp to remain outside the mounting plate 13, as detailed below. Figure 1 As shown, this allows the fixture to be fully exposed, making it convenient to place the brake base plate directly on the fixture.

[0031] Furthermore, based on the above embodiments, the fixture in this application includes a slotted plate 18 disposed on the top of the mounting plate 4. The slotted plate 18 is an essential component of the machine tool table, used to install clamping tools, and the slotted plate 18 here is no exception. Therefore, the fixture also includes several positioning blocks 23. The bottom of the positioning blocks 23 is mounted on a slide (not shown in the figure) that matches the slotted plate 18. The slide is specifically a dovetail block or a T-shaped block, and its specific shape matches the shape of the groove on the surface of the slotted plate 18.

[0032] like Figure 1 As shown, during use, the positioning blocks 23 are arranged around the edge of the brake base plate, and the slide blocks are slidably placed in the groove of the slot plate 18, so that the space formed by each positioning block 23 is consistent with the shape of the brake base plate. In this way, when the brake base plate is placed in the space formed by the positioning blocks 23, it can be positioned and fixed. Each slide block is positioned by a fastener, which is a bolt threaded on the slide block.

[0033] Based on the above embodiments, it should be further explained that this application connects the two-axis gantry robot arm, drive motor 14, aperture detection device and linear drive device respectively through the PLC control system, thereby achieving the purpose of automatic control and enabling each component to operate according to the set route.

[0034] like Figure 1 and Figure 2As shown, the second linear drive module 17, the third linear drive module 10, and the first linear drive module 3 are all provided with a grating ruler 5 on one side. The grating ruler 5 is connected to the PLC control system. The reading head of the grating ruler 5 is connected to the second linear drive module 17, the third linear drive module 10, and the first linear drive module 3 respectively. This allows the reading head of the grating ruler 5 to monitor the movement distance of each linear drive module in real time, which is convenient for position control. The second linear drive module 17, the third linear drive module 10, and the first linear drive module 3 are lead screw drive modules, linear motors, belt drive modules, etc.

[0035] Based on the above embodiments, further optimization is possible. The PLC control system is also connected to the operation panel 6, which is set on the support platform 2, making it convenient to control the entire equipment through the operation panel 6.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting the aperture of a brake base plate, comprising a drive motor (14), characterized in that, The drive motor (14) is mounted on the side of the mounting bracket (12), and the top of the mounting bracket (12) is mounted on the two-axis truss robot arm, which is mounted on the support platform (2). The shaft of the drive motor (14) is coaxially connected to the mounting plate (13). The edge of the mounting plate (13) is provided with several different types of aperture detection devices, and there is a certain distance between two connected aperture detection devices. The support platform (2) is also provided with a linear drive device, and the top of the linear drive device is provided with a clamp for holding the brake base plate.

2. The aperture detection device for brake base plate as described in claim 1, characterized in that, The support platform (2) is installed on the top of the control cabinet (1). A PLC control system is installed inside the control cabinet (1). The PLC control system is connected to the two-axis gantry robot arm, the drive motor (14), the aperture detection device, and the linear drive device.

3. The aperture detection device for brake base plate as described in claim 2, characterized in that, Each aperture detection device includes an L-shaped frame (16), which is detachably connected to the edge of the mounting plate (13), with one end of each L-shaped frame (16) located outside the edge of the mounting plate (13); The L-shaped frame (16) is provided with threaded connection seats (22) on the side away from the mounting plate (13). The inner hole of the threaded connection seat (22) penetrates the L-shaped frame (16), and a pressure sensor (21) corresponding to the inner hole is installed on the side of the L-shaped frame (16) away from the threaded connection seat (22). The mounting plate (13) is also provided with several inner plug diameter measuring heads (15) arranged radially therewith. Each inner plug diameter measuring head (15) has a different model. The top of the inner plug diameter measuring head (15) is threaded into the threaded connection seat (22). The pin on the top of the inner plug diameter measuring head (15) is in contact with the pressure sensor (21).

4. The aperture detection device for brake base plate as described in claim 3, characterized in that, The pressure sensor (21) is connected to the PLC control system via an electric slip ring (20), which is coaxially mounted on the shaft of the drive motor (14).

5. The aperture detection device for brake base plate as described in claim 3, characterized in that, The two-axis truss robotic arm includes two supports (7) vertically mounted on the top of the support platform (2), with a strip frame (11) between them. A third guide rail (8) and a third linear drive module (10) are horizontally mounted on one side of the strip frame (11). The top of the mounting frame (12) is mounted on the third guide rail (8) by a slider, and the mounting frame (12) is also connected to the third linear drive module (10). The two ends of the strip frame (11) are respectively set on the second guide rail (9) by sliders. The second guide rail (9) is perpendicular to the third linear drive module (10). A second linear drive module (17) parallel to the second guide rail (9) is provided on the side of one of the brackets (7). The second linear drive module (17) is connected to the strip frame (11). The second linear drive module (17) and the third linear drive module (10) are respectively connected to the PLC control system.

6. The aperture detection device for brake base plate as described in claim 5, characterized in that, The linear drive device is perpendicular to the third linear drive module (10). The linear drive device includes a first guide rail (19) and a first linear drive module (3) set on the support platform (2). The first linear drive module (3) is connected to the PLC control system. An mounting plate (4) is provided above the first guide rail (19). The mounting plate (4) is connected to the first guide rail (19) through a slider. The mounting plate (4) is connected to the first linear drive module (3).

7. The aperture detection device for brake base plate as described in claim 6, characterized in that, The fixture includes a slotted plate (18) disposed on the top of the mounting plate (4); The fixture also includes several positioning blocks (23), the bottom of which is mounted on a slide that matches the slot plate (18). The positioning blocks (23) surround the edge of the brake base plate, and the slide slides in the slot of the slot plate (18). Each slide is positioned by fasteners.

8. The aperture detection device for brake base plate as described in claim 7, characterized in that, The second linear drive module (17), the third linear drive module (10) and the first linear drive module (3) are all provided with a grating ruler (5) on one side. The grating ruler (5) is connected to the PLC control system. The reading head of the grating ruler (5) is connected to the second linear drive module (17), the third linear drive module (10) and the first linear drive module (3) respectively.

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