Flatness detection device for automobile brake pad processing

Abstract

The utility model relates to the field of automobile brake pad flatness detection, in particular to a flatness detection device for automobile brake pad processing. Comprising an X-axis electric sliding table, a Y-axis electric sliding table and a Z-axis electric sliding table which are installed on a bottom plate and provide a displacement basis for detection, eight single-rod air cylinders are arranged on the periphery of a brake pad detection area, and a soft rubber head is installed at the front end of a piston column of each air cylinder to flexibly clamp a brake pad. Four movable balls are uniformly distributed on the periphery of the writing displacement sensor above the brake pad for pre-detection; an electromagnetic adsorption device is further mounted at the bottom of the bottom plate for electrifying to adsorb part of the brake pad; according to the utility model, the surface flatness of the brake pad can be pre-detected so as to reduce the damage to a key detection assembly and prolong the service life of the brake pad; in addition, a fixed clamping mode of electromagnetic adsorption and a soft rubber head is adopted, brake pads of different specifications can be flexibly clamped, and universality is achieved.

Description

Technical Field

[0001] The utility model relates to the field of flatness detection of automobile brake pads, in particular to a flatness detection device for processing automobile brake pads. Background Art

[0002] Household cars usually use disc brakes. The components of disc brakes include brake discs, brake pads, brake calipers and brake cylinders. The brake pads are fixed to the brake calipers. The principle of braking is that the brake calipers clamp the brake discs and generate braking force through the friction between the brake pads and the brake discs. The basic components of brake pads are friction material, thermal insulation layer, adhesive layer and back plate. When braking, the friction material on the brake pads and the brake discs are used for friction braking. In this process, part of the reason for the abnormal noise between the brake pads and the brake discs is that the two are not aligned.

[0003] For newly produced brake pads, the common method is to manually use a flatness meter or a static runout tester. Not only is the work efficiency low, but there are always defects in the fixation and clamping of the irregular edges of brake pads of various specifications and shapes during the measurement process, resulting in the end face of the brake being unable to remain consistently level and thus causing inaccurate measurement results; and because the commonly used measuring instruments are contact type, when the surface of the brake pad is too rough, it will damage the measuring device.

[0004] In this regard, there is an urgent need for a detection device that can be applied to brake pads of various specifications and shapes, and can also perform pre-detection of flatness to prevent key detection components from being irreversibly damaged, thereby extending the service life. Utility Model Content

[0005] In order to make up for the deficiencies in the prior art and achieve the above functions, the utility model provides a flatness detection device for processing automobile brake pads.

[0006] The utility model is realized through the following technical solutions:

[0007] A flatness detection device for automobile brake pad processing, comprising four vertical support plates installed at the four corners of a bottom plate, a detection area is arranged at the center of the bottom plate, and four sides of the detection area are each provided with a single-rod cylinder fixed on the upper surface of the bottom plate, each side of the detection area corresponds to two single-rod cylinders, the piston rod of each single-rod cylinder faces the detection area and a pressure column is installed on each piston rod;

[0008] A Y-axis electric slide is installed between the front and rear support plates, and the Y-axis slider on the Y-axis electric slide faces downward and can only move forward and backward; an X-axis electric slide facing downward is horizontally fixed between the Y-axis sliders on the left and right sides, and the X-axis slider on the X-axis electric slide can only move horizontally left and right; a vertical Z-axis electric slide is fixed on the X-axis slider, and the Z-axis slider on the Z-axis electric slide can only move vertically up and down;

[0009] The Z-axis slider is fixed with a detection device box facing vertically downwards through a component connecting plate, a connecting block is fixed at the bottom of the detection device box, and a pen-type displacement sensor facing downwards is installed at the center of the connecting block.

[0010] Furthermore, a bottom groove is provided at the center position of the bottom of the bottom plate and an electromagnetic adsorption device is installed in the bottom groove.

[0011] Furthermore, the front and rear single-rod cylinders are symmetrically distributed, and the left and right single-rod cylinders are symmetrically distributed.

[0012] Furthermore, the pressure column includes a cylindrical body with a connector fixed at one end of the body, and a spherical soft rubber head capable of elastic deformation is installed at the other end of the body; the pressure column cooperates with the cylinder joint through the thread on the connector.

[0013] Furthermore, the connecting block is provided with four fixing grooves surrounding the pen-type displacement sensor, and the four fixing grooves are evenly distributed at the front, rear, left and right positions of the pen-type displacement sensor;

[0014] A photoelectric sensor facing vertically downward is installed in each fixed groove, and a vertical light-shielding tube connected to the connecting block is arranged at the bottom of each fixed groove, and the light-shielding tube is communicated with the fixed groove. The inner wall of the light-shielding tube is polished and a movable ball that can roll up and down is arranged at the bottom. The bottom of the light-shielding tube is provided with an annular retaining ring with a diameter smaller than the inner wall thereof, which can ensure that the movable ball is partially exposed while preventing the movable ball from falling off.

[0015] Furthermore, the probe of the pen-type displacement sensor is a contact sensing probe in contact with the end surface of the brake pad, and the lowest point of the contact sensing probe is between the lower end surface of the annular retaining ring of the light-shielding tube and the lowest point of the movable ball.

[0016] Furthermore, when the single-rod cylinder is pushed out, the soft rubber head on the pressure column contacts the side surface of the brake pad.

[0017] The beneficial effects of the utility model are:

[0018] The utility model can pre-detect the surface flatness of the brake pad to reduce damage to key detection components and extend their service life; the utility model also adopts electromagnetic adsorption and a fixed clamping method of a soft rubber head, which can flexibly clamp brake pads of different specifications and has universal applicability; the utility model also adopts three-axis control to improve detection accuracy and detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The overall three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 It is a schematic diagram of the bottom structure of the utility model;

[0022] Figure 4 It is a perspective view of a part of the detection assembly of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the pressure column of the utility model.

[0024] In the figure:

[0025] 1. Bottom plate, 101. Support plate, 102. Detection area,

[0026] 2. Single rod cylinder, 201, cylinder joint,

[0027] 3. Pressure column, 301, column, 302, soft rubber head, 303, connector,

[0028] 4. Y-axis electric slide, 401, Y-axis slider, 402, Y-axis motor,

[0029] 5. X-axis electric slide, 501, X-axis slider, 502, X-axis motor,

[0030] 6. Z-axis electric slide, 601, Z-axis slider, 602, Z-axis motor,

[0031] 7. Component connecting plate, 8. Detection equipment box, 9. Bottom slot, 901. Electromagnetic adsorption device,

[0032] 10. Connecting block, 1001. Fixing groove, 1002. Shading tube,

[0033] 11. Photoelectric sensor, 1101, movable ball,

[0034] 12. Pen-type displacement sensor, 1201. Contact probe, 13. Brake pad. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0037] like Figures 1 to 5 As shown, the utility model includes four vertical support plates 101 installed at the four corners of the bottom plate 1, a detection area 102 is arranged at the center of the bottom plate 1, the detection area 102 is a planed and milled flat horizontal surface, and the four sides of the detection area 102 are all provided with single-rod cylinders 2 fixed on the upper end surface of the bottom plate 1, each side of the detection area 102 corresponds to two single-rod cylinders 2, the piston rod of each single-rod cylinder 2 is facing the detection area 102, and a pressure column 3 is installed on each piston rod;

[0038] A Y-axis electric slide 4 is installed between the front and rear support plates 101, and the Y-axis slider 401 on the Y-axis electric slide 4 faces downward and can only move forward and backward; an X-axis electric slide 5 facing downward is horizontally fixed between the Y-axis sliders 401 on the left and right sides, and the X-axis slider 501 on the X-axis electric slide 5 can only move horizontally left and right; a vertical Z-axis electric slide 6 is fixed on the X-axis slider 501, and the Z-axis slider 601 on the Z-axis electric slide 6 can only move vertically up and down, and the XYZ three axes ensure the precise control of the spatial displacement of the pen-type displacement sensor 12;

[0039] At the same time Figure 1 As shown, the Y-axis motor 402 is located above the Y-axis electric slide 4, the X-axis motor 502 is fixed to the side of the X-axis electric slide 5, and the Z-axis motor 602 is located above the X-axis electric slide 5 and fixed to the top of the Z-axis electric slide 6; none of them hinders the displacement of each slider.

[0040] The Z-axis slider 601 is fixed with a detection device box 8 facing vertically downward through a component connecting plate 7, and an information processing unit connected to a photoelectric sensor 11 and a pen-type displacement sensor 12 is installed inside the detection device box 8. A connecting block 10 is fixed to the bottom of the detection device box 8, and a pen-type displacement sensor 12 facing downward is installed in the center of the connecting block 10.

[0041] like Figure 3 A bottom groove 9 is provided at the center of the bottom of the bottom plate 1 and an electromagnetic adsorption device 901 is installed in the bottom groove 9. For some brake pads 13 that can be magnetically attracted, the device can be opened for adsorption and fixation.

[0042] like Figure 1 The front and rear single-rod cylinders 2 are symmetrically distributed, and the left and right single-rod cylinders 2 are symmetrically distributed. The two single-rod cylinders 2 on each side can ensure that no horizontal skew occurs when they are against the brake pads 13.

[0043] like Figure 1 and Figure 5 The pressure column 3 includes a cylindrical column 301 and a connector 303 is fixed at one end of the column 301. A spherical soft rubber head 302 that can undergo elastic deformation is installed at the other end of the column 301, which makes soft contact with the side of the brake pad 13. On the one hand, it reduces the buffer, and on the other hand, it can also increase the contact area. The extended length of the piston rod is affected by the contact edge during abutment, and is suitable for brake pads of different specifications and shapes; the pressure column 3 cooperates with the cylinder joint 201 through the thread on the connector 303.

[0044] The connecting block 10 is provided with four fixing grooves 1001 surrounding the pen-type displacement sensor 12, and the four fixing grooves 1001 are evenly distributed in the front, rear, left and right positions of the pen-type displacement sensor 12;

[0045] A photoelectric sensor 11 facing vertically downward is installed in each fixed groove 1001 to measure the straight-line distance to the top of the movable ball 1101 for preliminary monitoring. A vertical light-shielding tube 1002 is arranged at the bottom of each fixed groove 1001 and is connected to the connecting block 10 to improve the photoelectric sensor 11. The light-shielding tube 1002 is communicated with the fixed groove 1001. The inner wall of the light-shielding tube 1002 is polished and a movable ball 1101 capable of rolling up and down is arranged at the bottom. An annular retaining ring with a diameter smaller than the inner wall is arranged at the bottom of the light-shielding tube 1002, which can ensure that the movable ball 1101 is partially exposed while preventing the movable ball 1101 from falling off. The probe of the pen-type displacement sensor 12 is a contact sensing probe 1201 in contact with the end face of the brake pad 13, and the lowest point of the contact sensing probe 1201 is between the lower end face of the annular retaining ring of the light-shielding tube 1002 and the lowest point of the movable ball 1101.

[0046] When the single-rod cylinder 2 is pushed out, the soft rubber head 302 on the pressure column 3 contacts the side surface of the brake pad 13 .

[0047] In the present utility model, the air valve, air pump and some electronic control components and host computer connected to the single-rod air cylinder 2 are not described in detail.

[0048] The principle of the utility model to prevent the contact probe 1201 from being damaged by the uneven surface of the brake pad 13 is as follows: (1) In the device, the X-axis slider 501 and the Y-axis slider 401 cannot move at the same time, that is, they cannot move diagonally to prevent passing through the displacement blind area of ​​the movable ball 1101. (2) Under the premise that only forward and backward and left and right displacements can be made successively, the Z-axis slider 601 controls the up and down displacement, and the movable ball 1101 first contacts the upper end surface of the brake pad 13, and then continues to move downward so that the contact probe 1201 contacts the brake pad 13 and stops displacement; at this time, the photoelectric sensor 11 and the pen-type displacement sensor 12 both have parameters, and the movable ball 1101 has not fully extended into the light-shielding tube 1002, and the light-shielding tube 1002 and other components will not interfere with the brake pad 13. (3) During displacement, the contact probe 1201 travels the same path as the movable ball 1101. If the movable ball 1101 undergoes a violent up-and-down displacement, that is, the surface of the brake pad 13 is too uneven, the photoelectric sensor 11 receives a signal and the device stops running to protect the pen-type displacement sensor 12. (4) The flatness parameters of the surface of the brake pad 13 are provided by the pen-type displacement sensor 12.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A flatness detection device for automobile brake pad processing, comprising four vertical support plates (101) mounted at four corners of a base plate (1), characterized in that: A detection area (102) is provided at the center of the bottom plate (1), and single-rod cylinders (2) fixed to the upper end surface of the bottom plate (1) are provided outside the four sides of the detection area (102), and each side of the detection area (102) corresponds to two single-rod cylinders (2), the piston rod of each single-rod cylinder (2) faces the detection area (102), and a pressure column (3) is installed on each piston rod; A Y-axis electric slide (4) is installed between the front and rear support plates (101), and the Y-axis slider (401) on the Y-axis electric slide (4) is oriented downward and can only move forward and backward; an X-axis electric slide (5) is horizontally fixed between the Y-axis sliders (401) on the left and right sides, and the X-axis slider (501) on the X-axis electric slide (5) can only move horizontally left and right; a vertical Z-axis electric slide (6) is fixed on the X-axis slider (501), and the Z-axis slider (601) on the Z-axis electric slide (6) can only move vertically up and down; The Z-axis slider (601) is fixed with a detection device box (8) facing vertically downward via a component connection plate (7); a connection block (10) is fixed to the bottom of the detection device box (8); and a pen-type displacement sensor (12) facing downward is installed at the center of the connection block (10).

2. The flatness detection device for automobile brake pad processing according to claim 1 is characterized in that: A bottom groove (9) is provided at the central position of the bottom of the bottom plate (1), and an electromagnetic adsorption device (901) is installed in the bottom groove (9).

3. The flatness detection device for automobile brake pad processing according to claim 1 is characterized in that: The front and rear single-rod cylinders (2) are symmetrically distributed, and the left and right single-rod cylinders (2) are symmetrically distributed.

4. The flatness detection device for automobile brake pad processing according to claim 1 is characterized in that: The pressure column (3) comprises a cylindrical body (301) with a connector (303) fixed at one end of the body (301), and a spherical soft rubber head (302) capable of elastic deformation installed at the other end of the body (301); the pressure column (3) is matched with the cylinder joint (201) via a thread on the connector (303).

5. The flatness detection device for automobile brake pad processing according to claim 1, characterized in that: The connection block (10) is provided with four fixing grooves (1001) surrounding the pen-type displacement sensor (12), and the four fixing grooves (1001) are evenly distributed in the front, rear, left and right directions of the pen-type displacement sensor (12); Each of the fixing grooves (1001) is provided with a photoelectric sensor (11) facing vertically downwards; a vertical light-shielding tube (1002) connected to the connecting block (10) is provided at the bottom of each fixing groove (1001); the light-shielding tube (1002) is in communication with the fixing groove (1001); the inner wall of the light-shielding tube (1002) is polished and a movable ball (1101) capable of rolling up and down is provided at the bottom; an annular retaining ring having a diameter smaller than that of the inner wall of the light-shielding tube (1002) is provided at the bottom of the light-shielding tube (1002); this ensures that the movable ball (1101) is partially exposed and can prevent the movable ball (1101) from falling off.

6. The flatness detection device for automobile brake pad processing according to claim 5, characterized in that: The probe of the pen-type displacement sensor (12) is a contact-type sensing probe (1201) in contact with the end surface of the brake pad (13), and the lowest point of the contact-type sensing probe (1201) is between the lower end surface of the annular retaining ring of the light-shielding tube (1002) and the lowest point of the movable ball (1101).

7. The flatness detection device for automobile brake pad processing according to claim 4, characterized in that: When the single-rod cylinder (2) is pushed out, the soft rubber head (302) on the pressure column (3) contacts the side surface of the brake pad (13).

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