Brake disc jerk value measuring tool convenient to adjust

Abstract

The utility model belongs to the technical field of brake disc detection tools, and particularly relates to a brake disc jerk value measurement tool convenient to adjust, which comprises a base, a detection frame connected to the top surface of the base, and a dial indicator in threaded connection with the surface of the detection frame through a thread head. According to the utility model, through mutual cooperation of the micro motor, the bidirectional screw rod, the moving block, the slot, the clamping plates and the fixing bolt, the distance between the two groups of clamping plates is adjusted according to the model of a brake disc to be detected, so that brake discs of different models are detected through clamping of the through groove at the circle center of the brake disc, and the practicability of the detection tool is further improved; and meanwhile, through mutual cooperation of a limiting rod, a rotating ring, a cross rod, a back plate, an annular rack, a gear and a motor, the gear is used for driving the annular rack to rotate during detection, so that the brake disc clamped and fixed on the rotating ring is driven to rotate, and the efficiency of brake disc detection work by the detection tool is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of brake disc testing fixtures, specifically relating to a brake disc runout measuring fixture that is easy to adjust. Background Technology

[0002] Brake discs are a key component of automotive braking systems. They are typically circular metal discs mounted on the wheel hub, forming a disc brake system together with brake calipers and brake pads. Their core function is to decelerate or stop the vehicle through friction. When the driver presses the brake pedal, the brake calipers push the brake pads to clamp the brake disc, using the friction between them to dissipate the vehicle's kinetic energy, reducing the wheel speed until it stops. Brake discs are characterized by good heat dissipation, fast braking response, and stable braking force, and are widely used in various vehicles such as automobiles, trains, and motorcycles, serving as an important component for ensuring driving safety. Furthermore, in industrial machinery and rail transportation, brake discs based on similar principles are used for braking and start-stop control of equipment.

[0003] When using a dial indicator to test brake disc runout, the brake disc must first be fixed on a dedicated testing fixture, ensuring it can rotate freely and remains coaxial with the rotation axis. Then, mount the dial indicator on a magnetic base, with the probe perpendicular to the test surface of the brake disc (usually 20-30mm from the outer edge). After pre-compressing to a certain range, zero the dial indicator. During the test, slowly and uniformly rotate the brake disc at least one revolution. The dial indicator pointer will swing with the rise and fall of the brake disc surface. The difference between the maximum and minimum reading of the pointer swing is the runout value at that measurement location. Repeat the measurement at multiple equally spaced points on the circumference of the brake disc and compare the runout data at each point. If the runout exceeds industry standards (e.g., the runout requirement for automotive brake discs is generally no greater than 0.05mm), the brake disc is deemed unqualified and requires repair or scrapping to ensure the manufacturing quality and safety of the brake disc. This tooling can accurately reflect parameters such as the flatness and coaxiality of the brake disc. It is widely used in automotive parts production, repair and testing, and other scenarios. It can effectively ensure the processing quality and safety of the brake disc, and avoid problems such as abnormal braking noise, vibration or reduced braking performance caused by excessive brake disc runout.

[0004] Existing brake disc testing fixtures use a fixed structure with a limiting device to fix the position of the brake disc, and then manually adjust the rotation of the clamped brake disc to use a dial indicator mounted on one side for testing. The above structure is highly restrictive, and can only test a single type of brake disc. Furthermore, manually adjusting the rotation of the clamped brake disc results in low testing efficiency and a heavy physical burden on the tester. Utility Model Content

[0005] The purpose of this invention is to provide an easily adjustable brake disc runout measuring fixture, which aims to solve the problems of existing brake disc testing fixtures that use a fixed structure limiting device to fix the position of the brake disc, and then manually adjust the rotation of the clamped brake disc to use a dial indicator mounted on one side for testing. The above structure is highly restrictive, can only test a single type of brake disc, and the manual adjustment of the clamped brake disc results in low testing efficiency and a heavy physical burden on the tester.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tooling for measuring the runout of a brake disc that is easy to adjust, comprising a base, a testing frame connected to the top surface of the base, a dial indicator threaded onto the surface of the testing frame, a support frame connected to the top surface of the base away from the testing frame, a limiting rod connected to the inner wall surface of the support frame, the other side surface of the limiting rod slidably connected to a groove on the surface of a rotating ring, a micro motor mounted on the inner wall of the rotating ring, a bidirectional lead screw connected to the shaft surface of the micro motor, the other end of the bidirectional lead screw being sleeved in a bearing provided on the inner wall of the rotating ring, a moving block threaded onto the surface of the bidirectional lead screw, a slot formed at the front end of a rectangular block on the surface of the moving block, a clamping plate inserted into the slot surface, the clamping plate and the moving block being threadedly connected at their intersection by a fixing bolt, a crossbar connected to the other side surface of the moving block, the crossbar slidably connected to a through groove on the surface of a back plate, the surface of the back plate being connected to the inner wall of the support frame, and an annular rack connected to the surface of the rotating ring.

[0007] As a preferred tooling for measuring brake disc runout that is easy to adjust according to the present invention, the support frame, the limiting rod and the rotating ring form a rotating connection structure, and the three sets of the limiting rods are distributed in a ring on the inner wall of the support frame.

[0008] As a preferred tooling for measuring brake disc runout that is easy to adjust according to this utility model, the two sets of micro motors, bidirectional lead screws and moving blocks are arranged in a cross shape and parallel to each other on the inner wall of the rotating ring.

[0009] As a preferred tooling for measuring brake disc runout that is easy to adjust according to this utility model, the two sets of moving blocks, slots and clamping plates are respectively threaded to both sides of the bidirectional lead screw.

[0010] As a preferred tooling for measuring brake disc runout that is easy to adjust according to this utility model, the surface of the annular rack is meshed with a gear, the surface of the gear is threaded to the motor shaft, the bottom of the motor is bolted to the top of the base, the top of the base is provided with a bearing sleeve on the other side of the gear, and the top of the base is connected to a control panel.

[0011] As a preferred tooling for measuring brake disc runout that is easy to adjust according to this utility model, the rotating ring, the annular rack and the gear form an adhesive connection structure.

[0012] As a preferred embodiment of this utility model for measuring brake disc runout in an easily adjustable manner, the micro motor, the electric motor, and the control panel form an electrical connection structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By cooperating with a micro motor, a two-way lead screw, a moving block, a slot, a clamping plate, and a fixing bolt, the distance between the two sets of clamping plates can be adjusted according to the model of the brake disc to be tested. This allows for the testing of different models of brake discs through the clamping of the through groove at the center of the brake disc, thereby improving the practicality of the testing fixture. At the same time, by cooperating with a limit rod, a rotating ring, a crossbar, a back plate, a ring rack, gears, and a motor, the gears drive the ring rack to rotate during testing, which in turn causes the brake disc clamped and fixed on the rotating ring to rotate, thereby improving the efficiency of the testing fixture in testing brake discs. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a side view sectional structural diagram of the present invention;

[0019] Figure 4 This is an exploded structural diagram of the support frame and rotating ring of this utility model;

[0020] Figure 5 This is an exploded structural diagram of the movable block and clamping plate of this utility model.

[0021] In the diagram: 1. Base; 2. Testing frame; 3. Dial indicator; 4. Support frame; 5. Limiting rod; 6. Rotating ring; 7. Micro motor; 8. Two-way lead screw; 9. Moving block; 10. Slot; 11. Clamping plate; 12. Fixing bolt; 13. Crossbar; 14. Back plate; 15. Ring rack; 16. Gear; 17. Motor; 18. Control panel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides the following technical solution: A tooling for measuring the runout of a brake disc that is easy to adjust, comprising a base 1, a testing frame 2 connected to the top surface of the base 1, a dial indicator 3 threadedly connected to the surface of the testing frame 2 using a threaded head, a support frame 4 connected to the top surface of the base 1 away from the testing frame 2, a limiting rod 5 connected to the inner wall surface of the support frame 4, the other side surface of the limiting rod 5 slidably connected to a groove on the surface of a rotating ring 6, a micro motor 7 installed on the inner wall of the rotating ring 6, a bidirectional lead screw 8 connected to the shaft surface of the micro motor 7, the other end of the bidirectional lead screw 8 sleeved in a bearing provided on the inner wall of the rotating ring 6, and a moving block 9 threadedly connected to the surface of the bidirectional lead screw 8. A slot 10 is opened at the front end of the rectangular block on the surface. A clamping plate 11 is inserted into the surface of the slot 10. The clamping plate 11 and the moving block 9 are connected by a fixing bolt 12 at their intersection. A crossbar 13 is connected to the other side of the moving block 9. The crossbar 13 is slidably connected to the through groove on the surface of the back plate 14. The surface of the back plate 14 is connected to the inner wall of the support frame 4. A ring rack 15 is connected to the surface of the rotating ring 6. In this design, the detection frame 2 and the dial indicator 3 form the main body of the detection component. A large number of related components are set in the main body of the detection component. Since they are existing technologies and the core content of this technical solution is not related to them, they will not be described in detail in this technical solution.

[0024] Preferably, the support frame 4, the limiting rod 5, and the rotating ring 6 form a rotating connection structure, with three sets of limiting rods 5 distributed in a ring on the inner wall of the support frame 4.

[0025] In practical use, the ring rack 15 drives the connected rotating ring 6 to rotate on the support frame 4 through the connected limiting rod 5, thereby rotating the brake disc clamped on the clamping plate 11.

[0026] Preferably, two sets of micro motors 7, bidirectional lead screws 8 and moving blocks 9 are arranged in a cross shape and parallel to each other on the inner wall of the rotating ring 6.

[0027] In actual use, the two sets of moving blocks 9 move until they abut against the surface of the inner wall groove of the sleeved brake disc, thereby using the two sets of "+" distributed clamping plates 11 to clamp and fix the inner wall of the brake disc.

[0028] Preferably, the two sets of moving blocks 9, slots 10 and clamping plates 11 are threadedly connected to both sides of the bidirectional lead screw 8.

[0029] In practical use, the rotation of the bidirectional lead screw 8 causes the two sets of moving blocks 9 connected to it to move simultaneously, thereby clamping and fixing the brake disc sleeved on the surface of the clamping plate 11.

[0030] Preferably, the annular rack 15 is meshed with the gear 16, the gear 16 is threaded to the shaft of the motor 17, the bottom of the motor 17 is bolted to the top of the base 1, the top of the base 1 is provided with a bearing sleeve on the other side of the gear 16, and the top of the base 1 is connected to the control panel 18.

[0031] In practical use, the motor 17 electrically connected to the control panel 18 is started to drive the gear 16 to rotate, thereby causing the meshing ring rack 15 to rotate together. At this time, the ring rack 15 drives the connected rotating ring 6 to rotate on the support frame 4, thereby rotating the brake disc clamped on the clamping plate 11.

[0032] Preferably, the rotating ring 6, the annular rack 15, and the gear 16 form an adhesive connection structure.

[0033] In practical use, the annular rack 15 connected to the surface of the rotating ring 6 enables the gear 16 to rotate, thereby driving the meshing rotating ring 6 to rotate within the support frame 4, thus adjusting the rotation of the clamped brake disc.

[0034] Preferably, the micro motor 7, the motor 17, and the control panel 18 form an electrical connection structure.

[0035] In practical use, the micro motor 7 and motor 17, which are electrically connected to the control panel 18, can be turned on and off using the control buttons. The rotation direction of the micro motor 7 and motor 17 can also be controlled.

[0036] Working principle: During brake disc processing or repair, the brake disc is held and fixed in position by the support frame 4 connected to the top of the base 1 and the rotating ring 6 rotatably connected inside it. The through groove at the center of the brake disc to be inspected is fitted onto the surface of the two sets of arc-shaped clamping plates 11. Then, the control switch on the surface of the electrically connected control panel 18 is activated to start the two sets of micro motors 7 mounted on the surface of the rotating ring 6. After the micro motors 7 are started, they drive the connected bidirectional lead screw 8 to rotate in the bearing provided on the inner wall of the rotating ring 6, thereby causing the moving block 9 threadedly connected to the bidirectional lead screw 8 to move to both sides simultaneously. When the moving block 9 is driven to move by the bidirectional lead screw 8, the crossbar 13 connected to its back side moves backward. The two sets of sliding blocks 9 slide together on the back plate 14 of the sliding connection, thereby limiting the movement range of the moving block 9 and enabling it to maintain the corresponding horizontal or vertical movement. The two sets of moving blocks 9 move until they abut against the surface of the through groove on the inner wall of the sleeved brake disc, thereby using the two sets of "+" distributed clamping plates 11 to clamp and fix the inner wall of the brake disc. At this time, according to the position of the clamped and fixed brake disc, the height of the dial indicator 3 is adjusted by rotating the threaded head connected between the test frame 2 and the dial indicator 3. Then, according to the test requirements, the test head of the dial indicator 3 is moved to the surface of the brake disc fixed on the clamping plate 11 (usually selected at a distance of 20-30mm from the outer edge of the brake disc). After pre-compressing a certain range, the dial indicator 3 is zeroed. Then, the motor 17 connected to the control panel 18 is started to drive the gear 16 to rotate, thereby causing the meshing ring rack 15 to rotate together. At this time, the ring rack 15 drives the connected rotating ring 6 to rotate on the support frame 4, thereby rotating the brake disc clamped on the clamping plate 11, thus improving the detection efficiency of the brake disc.

[0037] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tool for measuring run-out of a brake disc, which is easy to adjust, comprising a base (1), characterized in that: The top surface of the base (1) is connected to the testing frame (2), and the surface of the testing frame (2) is threaded with a dial indicator (3). The top surface of the base (1) away from the testing frame (2) is connected to a support frame (4). The inner wall surface of the support frame (4) is connected to a limiting rod (5). The other side surface of the limiting rod (5) is slidably connected to a groove on the surface of a rotating ring (6). A micro motor (7) is installed on the inner wall of the rotating ring (6). The shaft surface of the micro motor (7) is connected to a bidirectional lead screw (8). The other end of the bidirectional lead screw (8) is sleeved on the inner wall of the rotating ring (6). In some bearings, the surface of the bidirectional lead screw (8) is threadedly connected to a moving block (9), and a slot (10) is opened at the front end of the rectangular block on the surface of the moving block (9). A clamping plate (11) is inserted into the surface of the slot (10). The clamping plate (11) and the moving block (9) are threadedly connected by a fixing bolt (12) at their intersection. A crossbar (13) is connected to the other side surface of the moving block (9). The crossbar (13) is slidably connected to the through groove on the surface of the back plate (14). The surface of the back plate (14) is connected to the inner wall of the support frame (4). A ring rack (15) is connected to the surface of the rotating ring (6).

2. The brake disc run-out measuring tool of claim 1, wherein: The support frame (4), the limiting rod (5) and the rotating ring (6) form a rotating connection structure, and the three sets of the limiting rod (5) are distributed in a ring on the inner wall of the support frame (4).

3. A brake disc run-out measuring tool according to claim 2, wherein: The two sets of micro motors (7), bidirectional lead screws (8) and moving blocks (9) are arranged in a cross shape on the inner wall of the rotating ring (6).

4. The brake disc run-out measuring tool of claim 3, wherein: The two sets of moving blocks (9), slots (10) and clamping plates (11) are respectively threaded to both sides of the bidirectional lead screw (8).

5. The brake disc run-out measuring tool of claim 1, wherein: The annular rack (15) meshes with the gear (16), the gear (16) is threaded to the shaft of the motor (17), the bottom of the motor (17) is bolted to the top of the base (1), the top of the base (1) is provided with a bearing sleeve on the other side of the gear (16), and the top of the base (1) is connected to the control panel (18).

6. A brake disc run-out measuring tool according to claim 5, wherein: The rotating ring (6), the annular rack (15), and the gear (16) form an adhesive connection structure.

7. A brake disc run-out measuring tool according to claim 5, wherein: The micro motor (7), motor (17), and control panel (18) form an electrical connection structure.

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