An automatic testing machine for automobile brake hub assembly

Abstract

The invention discloses an automatic inspection machine for automobile brake hub assembly, which belongs to the technical field of automobile hub inspection, and comprises an electrical control cabinet and a frame located at one side of the electrical control cabinet, wherein a lifting slide is installed on the frame, a lifting motor is installed on the frame for lifting the lifting slide, the lifting slide, a support plate is fixed to the bottom of the lifting slide through a support rod, a measuring sensor is installed on the lower surface of the support plate, two arc-shaped cleaning plates are arranged on one side of the support plate, L-shaped rods are fixed on the side walls of the two cleaning plates, the L-shaped rods are slidably connected to the support plate, an arc-shaped cylinder is fixed on the upper surface of the support plate, and movable rods are movably installed on both ends of the cylinder; the invention utilizes non-contact measurement to detect the runout of the inner ring of the wheel hub, and cleans the surface of the inner ring of the wheel hub before inspection, so as to ensure the measurement accuracy and not affect the measurement efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of automobile wheel hub detection, in particular to an automatic detection machine for automobile brake wheel hub assembly. Background Art

[0002] Wheel runout detection is an important part of ensuring vehicle driving stability and safety. Traditional methods include using tools such as runout meters and dial indicators to perform manual readings, but this method is cumbersome and prone to human errors. In modern technology, a wheel runout detection system based on laser displacement sensors has been developed to improve detection accuracy and efficiency.

[0003] However, whether using a dial indicator (contact measurement) or a sensor (non-contact measurement) for detection, the surface of the wheel hub will be contaminated with impurities and oil after production. When detecting the runout of the inner ring surface of the wheel hub, the contact measurement is in direct contact with the wheel hub, and the impurities on the surface will cause detection errors. Non-contact measurement mainly relies on optical principles to detect reflected or scattered light on the workpiece surface. If there is oil, dust or other contaminants on the surface of the wheel hub, these impurities may absorb, scatter or reflect light, thereby affecting the intensity and direction of the light signal received by the sensor, which may cause the non-contact measurement system to misjudge the actual position and shape of the wheel hub, thereby affecting the measurement accuracy of the runout. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic inspection machine for automobile brake hub assembly to solve the following technical problems: the existing inspection technology will affect the measurement accuracy of the runout due to the presence of impurities and oil on the hub surface.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A vehicle brake hub assembly automatic inspection machine comprises an electrical control cabinet and a frame located on one side of the electrical control cabinet, a lifting slide is installed on the frame, a lifting motor is installed on the frame for lifting the lifting slide, the lifting slide, a support plate is fixed to the bottom of the lifting slide through a support rod, a measuring sensor is installed on the lower surface of the support plate, two arc-shaped cleaning plates are arranged on one side of the support plate, L-shaped rods are fixed on the side walls of the two cleaning plates, the L-shaped rods are slidably connected to the support plate, an arc-shaped cylinder is fixed on the upper surface of the support plate, movable rods are movably installed at both ends of the cylinder, the ends of the two movable rods that are far away from each other are fixedly connected to the two L-shaped rods by connecting rods, and the ends of the two movable rods that are close to each other are fixed with a first piston block, and a pressurizing mechanism for pressurizing the inside of the cylinder is also installed on the support plate.

[0007] As a further solution of the present invention: it also includes a workpiece conveying roller located below the lifting slide, a pallet lifting assembly is installed on the workpiece conveying roller, and a positioning mechanism is also installed at the bottom of the lifting slide. The pallet lifting assembly lifts the wheel hub, and the positioning mechanism fixes the wheel hub as the lifting slide descends.

[0008] As a further solution of the present invention: the pressurizing mechanism includes a pressurizing box fixed on the lower surface of the support plate, a pressurizing rod is movably arranged at the bottom of the pressurizing box, a second piston block is fixed to the top of the pressurizing rod, a push block is fixed to the top of the second piston block, second springs are connected to the inner walls on both sides of the top of the inner cavity of the pressurizing box, and blocks are connected to the ends of the two second springs that are close to each other, a pressurizing pipe is connected to the top of the pressurizing box, and one end of the pressurizing pipe is connected to the middle part of the cylinder.

[0009] As a further solution of the present invention: the top of the push block is a conical structure, and the bottoms of the adjacent ends of the two stoppers are both provided with notches.

[0010] As a further solution of the present invention: a cushion block is fixed to the bottom end of the pressure rod.

[0011] As a further solution of the present invention: a first spring is connected between the two first piston blocks, an extension block is fixed to one side of the cushion block, a sealing rod is fixed to the upper surface of the extension block, an L-shaped pressure relief pipe is fixed to one side of the pressurizing pipe, the vertical end of the pressure relief pipe is located directly above the sealing rod, and the size of the sealing rod matches the size of the pressure relief pipe.

[0012] As a further solution of the present invention: a rack is provided on one side of the pressurizing rod in the vertical direction, a mounting frame is provided on one side of the bottom of the pressurizing box, a rotating shaft is rotatably installed on the mounting frame, a gear and an elliptical block are installed on the rotating shaft, the gear is meshed with the rack, an air pump is fixed to one side of the pressurizing box through a fixing rod, the air outlet of the air pump is connected to an air outlet pipe, the air outlet pipe is communicated with the pressurizing box, the handle of the air pump is in contact with the elliptical block, and a third spring is mounted on the piston rod of the air pump.

[0013] As a further solution of the present invention: arc-shaped sliding grooves are symmetrically opened on the surface of the support plate, and sliders are slidably connected in the sliding grooves, and two sliders are fixedly connected to two L-shaped rods respectively.

[0014] Beneficial effects of the present invention:

[0015] (1) The present invention uses non-contact measurement to detect the runout of the inner ring of the wheel hub by setting up a lifting slide, a measuring sensor, a cleaning plate, a support plate, a cylinder and a pressurizing mechanism. Before the detection, the surface of the inner ring of the wheel hub is cleaned by a cleaning plate, and the cleaning plate removes impurities and oil stains. The two cleaning plates are initially in a combined state. After the lifting slide descends, the wheel hub directly in front of the measuring sensor is cleaned first. When the measuring sensor reaches the position, the two cleaning plates are automatically opened under the action of the pressurizing structure. As the wheel hub rotates, the inner ring is cleaned in advance, thereby improving the measurement accuracy and ensuring the detection efficiency.

[0016] (2) The present invention provides a pressurizing box, a pressurizing rod, a second piston block and a stopper. After the lifting slide descends and enters the inside of the wheel hub, the pressurizing rod contacts the bottom of the wheel hub and squeezes the air inside the pressurizing box. At this time, due to the obstruction of the stopper, the gas cannot enter the cylinder. The two cleaning plates clean the surface of the wheel hub directly in front of the measuring sensor. When the measuring sensor is in place, the push block squeezes the two stoppers open. At this time, the pressurized gas enters the cylinder through the pressurizing pipe, pushing the two first piston blocks to move, so that the two cleaning plates are pushed open by the movable rod. The cleaning and measurement of the inner ring of the wheel hub can be completed by rotating the wheel hub once.

[0017] (3) The present invention provides a first spring, a blocking rod, a pressure relief pipe and other structures. During detection, the blocking rod enters the pressure relief pipe in advance, so that the gas in the cylinder cannot be discharged. When the detection is completed, the lifting slide rises, and the pressure rod descends under the action of gravity, driving the blocking rod to separate from the pressure relief pipe, automatically discharging the gas in the cylinder and automatically resetting the cleaning plate, which is beneficial to subsequent cleaning and detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a front view of the whole of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a workpiece conveying roller table of the present invention;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the lifting slide and positioning mechanism of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the support rod and the support plate of the present invention;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the support plate and the cleaning plate of the present invention;

[0024] Figure 6 It is a schematic diagram of the internal structure of the cylinder of the present invention;

[0025] Figure 7 It is a schematic diagram of the internal structure of the pressurized box of the present invention;

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the gear and the air pump of the present invention.

[0027] In the figure: 1. electrical control cabinet; 2. frame; 3. lifting slide; 4. measuring sensor; 5. workpiece conveyor roller; 6. pallet lifting assembly; 7. positioning mechanism; 8. support rod; 9. support plate; 10. cleaning plate; 11. slider; 12. L-shaped rod; 13. pressurizing box; 14. pressurizing pipe; 15. cylinder; 16. movable rod; 17. connecting rod; 18. first piston block; 19. first spring; 20. pressurizing rod; 21. cushion block; 22. rack; 23. second piston block; 24. push block; 25. second spring; 26. stopper; 27. pressure relief pipe; 28. extension block; 29. ​​blocking rod; 30. mounting frame; 31. rotating shaft; 32. gear; 33. elliptical block; 34. fixing rod; 35. air pump; 36. third spring; 37. exhaust pipe; 38. wheel hub.

[0028] The drawings are only used for illustrative purposes and are not to be construed as limitations of the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced in size, and do not represent the size and shape of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 6As shown, the present invention is an automatic inspection machine for automobile brake hub assembly, comprising an electrical control cabinet 1 and a frame 2 located on one side of the electrical control cabinet 1, a lifting slide 3 is installed on the frame 2, a lifting motor is installed on the frame 2 for lifting the lifting slide 3, the lifting slide 3, a support plate 9 is fixed to the bottom of the lifting slide 3 through a support rod 8, a measuring sensor 4 is installed on the lower surface of the support plate 9, two arc-shaped cleaning plates 10 are arranged on one side of the support plate 9, L-shaped rods 12 are fixed to the side walls of the two cleaning plates 10, the L-shaped rods 12 are slidably connected to the support plate 9, an arc-shaped cylinder 15 is fixed to the upper surface of the support plate 9, movable rods 16 are movably installed at both ends of the cylinder 15, the ends of the two movable rods 16 that are far away from each other are fixedly connected to the two L-shaped rods 12 through a connecting rod 17, and the ends of the two movable rods 16 that are close to each other are fixed with a first piston block 18, and a pressurizing mechanism for pressurizing the inside of the cylinder 15 is also installed on the support plate 9; it also includes a position The workpiece conveying roller 5 below the lifting slide 3 is provided with a tray lifting assembly 6, and a positioning mechanism 7 is also installed at the bottom of the lifting slide 3. The tray lifting assembly 6 lifts the wheel hub 38, and the positioning mechanism 7 fixes the wheel hub 38 as the lifting slide 3 descends; the surface of the support plate 9 is symmetrically provided with arc-shaped slide grooves, and sliders 11 are slidably connected in the slide grooves, and the two sliders 11 are fixedly connected to the two L-shaped rods 12 respectively; the wheel hub 38 enters the measuring area through the workpiece conveying roller 5. After the wheel hub 38 is in place, the tray lifting assembly 6 is used to lift the wheel hub 38, and the lifting slide 3 descends at the same time to send the support plate 9 and the measuring sensor 4 into the wheel hub 38. At this time, the two cleaning plates 10 first clean the wheel hub 38 directly in front of the measuring sensor 4. Under the action of the pressurized structure, the two cleaning plates 10 are automatically opened. As the wheel hub 38 rotates, the inner ring of the wheel hub 38 is cleaned in advance, thereby improving the measurement accuracy and ensuring the detection efficiency.

[0031] See also Figures 4 to 7As shown, the pressurizing mechanism includes a pressurizing box 13 fixed on the lower surface of the support plate 9, a pressurizing rod 20 is movably provided at the bottom of the pressurizing box 13, a second piston block 23 is fixed to the top of the pressurizing rod 20, a push block 24 is fixed to the top of the second piston block 23, the inner walls on both sides of the top of the inner cavity of the pressurizing box 13 are connected to second springs 25, the ends of the two second springs 25 that are close to each other are connected to blocks 26, the top of the pressurizing box 13 is connected to a pressurizing tube 14, one end of the pressurizing tube 14 is connected to the middle part of the cylinder 15; the top of the push block 24 is a conical structure, and the bottom of the ends close to the two blocks 26 are both provided with notches; the bottom end of the pressurizing rod 20 is fixed with a cushion block 21; the pad 21 plays the role of a counterweight support. When the support plate 9 descends with the lifting slide 3, the pad 21 first contacts the bottom of the wheel hub 38, driving the pressure rod 20 and the second piston block 23 to rise, first squeezing the air inside the pressurized box 13. At this time, due to the obstruction of the block 26, the gas cannot enter the cylinder 15. When the measuring sensor 4 is in place, the push block 24 squeezes the two blocks 26 open, and the pressurized gas enters the cylinder 15 through the pressure pipe 14, pushing the two first piston blocks 18 to move, thereby using the movable rod 16 to push the two cleaning plates 10 apart. It is only necessary to rotate the wheel hub 38 one circle to complete the cleaning and measurement of the inner ring of the wheel hub 38.

[0032] See also Figure 5 and Figure 6 As shown, a first spring 19 is connected between the two first piston blocks 18, an extension block 28 is fixed to one side of the cushion block 21, a sealing rod 29 is fixed to the upper surface of the extension block 28, an L-shaped pressure relief pipe 27 is fixed to one side of the pressure tube 14, the vertical end of the pressure relief pipe 27 is located directly above the sealing rod 29, and the size of the sealing rod 29 matches the size of the pressure relief pipe 27; during detection, the sealing rod 29 enters the pressure relief pipe 27 in advance to block the pressure relief pipe 27, so that the gas in the cylinder 15 cannot be discharged. When the detection is completed, the lifting slide 3 is raised, and the pressure rod 20 descends under the action of gravity, driving the sealing rod 29 to disengage from the pressure relief pipe 27, automatically discharging the gas in the cylinder 15, and automatically resetting the cleaning plate 10, which is beneficial to subsequent cleaning and detection.

[0033] See also Figure 5 and Figure 8As shown, a rack 22 is provided on one side of the pressurizing rod 20 in the vertical direction, a mounting frame 30 is provided on one side of the bottom of the pressurizing box 13, a rotating shaft 31 is rotatably mounted on the mounting frame 30, a gear 32 and an elliptical block 33 are mounted on the rotating shaft 31, the gear 32 is meshed with the rack 22, an air pump 35 is fixed to one side of the pressurizing box 13 through a fixing rod 34, an air outlet of the air pump 35 is connected to an air outlet pipe 37, the air outlet pipe 37 is communicated with the pressurizing box 13, and the handle of the air pump 35 is in contact with the elliptical block 33. A third spring 36 is mounted on the piston rod of the air pump 35; in order to have sufficient air pressure to push the first piston block 18 to move, when the pressure rod 20 rises, the rack 22 drives the gear 32 to rotate, and at the same time the elliptical block 33 rotates continuously, pushing the air pump 35 to inflate, and the gas enters the pressure box 13, thereby further increasing the air pressure in the pressure box 13 to ensure that the gas volume is sufficient, and when the lifting slide 3 is reset, the elliptical block 33 still pushes the air pump 35 to work, which can speed up the reset of the pressure rod 20.

[0034] The working principle of the present invention is as follows: the wheel hub 38 to be measured is placed on the workpiece conveying roller 5, and the wheel hub 38 enters the measuring area through the workpiece conveying roller 5. After the wheel hub 38 is in place, the wheel hub 38 is lifted up by the tray lifting assembly 6, and at the same time, the lifting slide 3 descends, and the support plate 9 and the measuring sensor 4 are sent into the wheel hub 38. At this time, the two cleaning plates 10 first clean the wheel hub 38 directly in front of the measuring sensor 4. In order to improve the cleaning effect, a cleaning cloth can be set on the cleaning plate 10. As the lifting slide 3 descends, the pad 21 contacts the bottom of the wheel hub 38, driving the pressure rod 20 and the second piston The block 23 rises in the pressurized box 13, and first squeezes the air inside the pressurized box 13. At this time, due to the obstruction of the block 26, the gas cannot enter the cylinder 15. When the measuring sensor 4 is in place, the push block 24 just squeezes the two blockers 26 apart, and the pressurized gas enters the cylinder 15 through the pressurized pipe 14, pushing the two first piston blocks 18 to move, and the movable rod 16 and the connecting rod 17 can push the two cleaning plates 10 apart, and no longer block the measuring sensor 4. At this time, you only need to rotate the wheel hub 38 for one circle to complete the cleaning and measurement of the inner ring of the wheel hub 38 at the same time, ensuring the measurement accuracy;

[0035] In order to have enough air pressure to push the first piston block 18 to move, when the pressure rod 20 rises, the rack 22 drives the gear 32 to rotate, and at the same time the elliptical block 33 keeps rotating, pushing the air pump 35 to inflate, and the gas enters the pressure box 13, thereby further increasing the air pressure in the pressure box 13 to ensure that the gas volume is sufficient, and when the lifting slide 3 rises and resets, the elliptical block 33 still pushes the air pump 35 to work to inflate the pressure box 13, which can speed up the descent and reset of the pressure rod 20, and facilitate the smooth progress of subsequent measurements;

[0036] When the lifting slide 3 descends, the blocking rod 29 enters the pressure relief pipe 27 in advance to block the pressure relief pipe 27, so that the gas in the cylinder 15 cannot be discharged. When the detection is completed, the lifting slide 3 rises, and the pressure rod 20 automatically descends under the action of gravity, driving the blocking rod 29 to separate from the pressure relief pipe 27, and the gas in the cylinder 15 is discharged through the pressure relief pipe 27, so that the cleaning plate 10 is automatically reset, which is beneficial to the subsequent cleaning and detection.

[0037] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An automatic inspection machine for automobile brake hub assemblies, comprising an electrical control cabinet (1) and a frame (2) located on one side of the electrical control cabinet (1), a lifting slide (3) being mounted on the frame (2), and a lifting motor being mounted on the frame (2) for lifting the lifting slide (3), characterized in that: A support plate (9) is fixed to the bottom of the lifting slide (3) via a support rod (8), a measuring sensor (4) is installed on the lower surface of the support plate (9), two arc-shaped cleaning plates (10) are arranged on one side of the support plate (9), L-shaped rods (12) are fixed on the side walls of the two cleaning plates (10), the L-shaped rods (12) are slidably connected to the support plate (9), an arc-shaped cylinder (15) is fixed to the upper surface of the support plate (9), movable rods (16) are movably installed at both ends of the cylinder (15), the ends of the two movable rods (16) that are far away from each other are fixedly connected to the two L-shaped rods (12) via connecting rods (17), and the ends of the two movable rods (16) that are close to each other are fixed with a first piston block (18), and a pressurizing mechanism for pressurizing the inside of the cylinder (15) is also installed on the support plate (9); The pressurizing mechanism comprises a pressurizing box (13) fixed on the lower surface of the support plate (9), a pressurizing rod (20) is movably arranged at the bottom of the pressurizing box (13), a second piston block (23) is fixed to the top end of the pressurizing rod (20), a push block (24) is fixed to the top end of the second piston block (23), the inner walls on both sides of the top of the inner cavity of the pressurizing box (13) are connected to second springs (25), the ends of the two second springs (25) that are close to each other are connected to a stopper (26), the top end of the pressurizing box (13) is connected to a pressurizing pipe (14), and one end of the pressurizing pipe (14) is connected to the middle part of the cylinder (15).

2. The automatic testing machine for automobile brake hub assembly according to claim 1, characterized in that: It also includes a workpiece conveying roller (5) located below the lifting slide (3), a pallet lifting assembly (6) being installed on the workpiece conveying roller (5), and a positioning mechanism (7) being installed at the bottom of the lifting slide (3), the pallet lifting assembly (6) lifting the wheel hub (38), and the positioning mechanism (7) fixing the wheel hub (38) as the lifting slide (3) descends.

3. The automatic testing machine for automobile brake hub assembly according to claim 1 is characterized in that: The top of the push block (24) is a conical structure, and the bottoms of the adjacent ends of the two stop blocks (26) are both provided with notches.

4. The automatic inspection machine for automobile brake hub assembly according to claim 1, characterized in that: A cushion block (21) is fixed to the bottom end of the pressure rod (20).

5. The automatic testing machine for automobile brake hub assembly according to claim 4, characterized in that: A first spring (19) is connected between the two first piston blocks (18); an extension block (28) is fixed to one side of the cushion block (21); a sealing rod (29) is fixed to the upper surface of the extension block (28); an L-shaped pressure relief pipe (27) is fixed to one side of the pressure-increasing pipe (14); the vertical end of the pressure relief pipe (27) is located directly above the sealing rod (29), and the size of the sealing rod (29) matches the size of the pressure relief pipe (27).

6. The automatic testing machine for automobile brake hub assembly according to claim 1, characterized in that: A rack (22) is arranged on one side of the pressurizing rod (20) in the vertical direction, and a mounting frame (30) is arranged on one side of the bottom of the pressurizing box (13). A rotating shaft (31) is rotatably mounted on the mounting frame (30), and a gear (32) and an elliptical block (33) are mounted on the rotating shaft (31). The gear (32) is meshed with the rack (22). An air pump (35) is fixed to one side of the pressurizing box (13) via a fixing rod (34). The air outlet of the air pump (35) is connected to an air outlet pipe (37), and the air outlet pipe (37) is connected to the pressurizing box (13). The handle of the air pump (35) is in contact with the elliptical block (33), and a third spring (36) is sleeved on the piston rod of the air pump (35).

7. The automatic testing machine for automobile brake hub assembly according to claim 1, characterized in that: The surface of the support plate (9) is symmetrically provided with arc-shaped sliding grooves, in which sliding blocks (11) are slidably connected, and two sliding blocks (11) are respectively fixedly connected to two L-shaped rods (12).

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