Detection device for automobile outer pipe

Abstract

The utility model relates to the technical field of automobile part detection, in particular to a detection device for an automobile outer pipe, which comprises a connecting seat, the connecting seat is provided with a mounting hole for inserting a bolt, the front surface of the connecting seat is fixedly connected with an electric cylinder, and the bottom of the electric cylinder is fixedly connected with a supporting seat; the connecting base is used for being installed on conveying equipment, when the cylindrical lining is conveyed to the position below the disc, the electric air cylinder drives the supporting base to descend, the abutting plate below the disc makes contact with the top of the lining, and along with continuous descending of the abutting plate, the first piston is jacked into the position above the negative pressure cavity; the detection clamping plates, located on the two sides of the lower portion of the first piston, of the negative pressure cavity clamp and detect the lining, the servo motor in the supporting base drives the detection clamping plates connected to the lower portion of the disc to rotate, and therefore different areas can be conveniently detected.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts testing technology, specifically a testing device for automotive outer tubes. Background Technology

[0002] Engine connecting rod bushings are fitted into the small end bore of the connecting rod. Typically, these bushings are rolled copper open bushings with a wall thickness of approximately [thickness missing], although machined open bushings are also possible. During assembly, they are compressed and inserted into the small end bore of the connecting rod, forming an interference fit. During operation, the assembled bushing forms a clearance fit with the piston pin. With lubrication, this reduces friction between workpieces at high speeds, improving engine lifespan. The use of bushings in connecting rod assemblies has become mainstream in this field. However, the outer diameter of the bushing is crucial to the fit between the bushing and the small end bore of the connecting rod. An excessively large outer diameter can damage both the bushing and the connecting rod during insertion, potentially leading to failure. An excessively small outer diameter will cause the bushing to rotate or dislodge within the small end bore. Therefore, employing appropriate testing methods to determine whether the connecting rod bushing's outer diameter meets technical requirements is essential.

[0003] Existing testing equipment typically measures the outer diameter of bushings directly by clamping them. While this method is quick, in actual machining, clamping is necessary to ensure the bushing is securely fixed on the machine tool. This can lead to problems such as excessive clamping force deforming the thin-walled portion of the bushing, or cutting forces exerted by the cutting tool on the bushing material during machining processes like turning and boring. Since bushings are generally thin-walled structures with relatively weak rigidity, improper selection of cutting parameters (such as cutting speed, feed rate, and depth of cut) and excessive cutting force can also cause bushing deformation, resulting in a non-circular outer diameter. The method of clamping from both sides can easily misalign the deformed areas, leading to a decrease in testing accuracy. Therefore, we propose a testing device for automotive outer tubes. Utility Model Content

[0004] The purpose of this utility model is to provide a detection device for automotive outer tubes. This detection device solves the problem that the detection method using clamping from both sides is prone to misaligning the deformation area of ​​the bushing outer diameter, which leads to a decrease in detection accuracy.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A detection device for automotive outer tubes includes a connector, the connector having mounting holes for inserting bolts, an electric cylinder fixedly connected to the front of the connector, and a support base fixedly connected to the bottom of the electric cylinder.

[0007] A disc is rotatably connected to the bottom of the support base, and a servo motor for driving the disc to rotate is installed inside the support base. Detection clamps for detection are respectively installed on both sides below the disc.

[0008] Preferably, a negative pressure chamber is provided at the center of the disc, a first piston is slidably connected to the inner wall of the negative pressure chamber, an abutment plate is provided below the first piston, and sliding grooves are respectively provided on both sides of the disc at the negative pressure chamber, and the sliding grooves are connected to the negative pressure chamber. Sliding blocks are slidably connected to the inner walls of the two sliding grooves, and detection clamps are fixedly connected to the bottom of the sliding blocks.

[0009] Preferably, a connecting sleeve is fixedly connected to the bottom of the first piston, a second piston is slidably connected to the inner wall of the connecting sleeve, and the second piston is fixedly connected to the abutment plate. A spring is fixedly connected between the connecting sleeve and the second piston.

[0010] Preferably, a dovetail groove is formed on the front of the connecting seat, and a dovetail slider that slides in the dovetail groove is fixedly connected to the support seat.

[0011] Preferably, the clamping surface of the detection clamp is provided with a displacement cavity, and a detection block is slidably connected to the inner wall of the displacement cavity.

[0012] Preferably, the detection block is rotatably connected to a circular roller at a position outside the displacement cavity.

[0013] Preferably, the inner wall of the detection clamp is provided with a detection cavity, the detection cavity is connected to the displacement cavity through a connecting hole, a pressure block is slidably connected to the inner wall of the detection cavity, and a pressure sensor is fixedly connected inside the detection cavity at a position above the pressure block.

[0014] By employing the above technical solution, this utility model provides a detection device for automotive outer tubes. It possesses at least the following beneficial effects:

[0015] I. The connecting seat of this utility model is used to be installed in the conveying equipment. When the cylindrical bushing is conveyed to the bottom of the disc, the support seat is driven to descend by the electric cylinder, so that the abutment plate under the disc contacts the top of the bushing. As the abutment plate continues to descend, the first piston is pushed into the upper part of the negative pressure chamber, so that the negative pressure chamber is located below the first piston and generates negative pressure, thereby drawing out the air in the slide groove, causing the slider to retract into the slide groove, so as to facilitate the clamping and testing of the bushing by the detection clamps on both sides. Then, the servo motor in the support seat drives the detection clamps connected to the bottom of the disc to rotate, so as to facilitate the testing of different areas.

[0016] II. When the detection clamping plate of this utility model clamps the outer wall of the bushing, the detection block is squeezed by the surface of the bushing and will retract into the detection cavity. This causes the compressed air in the detection cavity to be squeezed into the detection cavity from the connection hole, lifting the pressure block and increasing the pressure in the detection cavity above the detection block. The pressure sensor installed inside the detection cavity senses whether the displayed pressure is within the set pressure range. If it exceeds the range, it is considered unqualified. Furthermore, when the servo motor drives the detection clamping plate connected to the bottom of the disc to rotate, if the pressure sensor shows a large range of pressure fluctuations, it indicates that the outer diameter of the bushing is deformed. This avoids the problem of decreased detection accuracy caused by misaligning the deformed area of ​​the bushing's outer diameter when using a two-sided clamping method. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the support base, the disc, and the detection clamp in this utility model;

[0020] Figure 3 This is a cross-sectional view of the disk in this utility model;

[0021] Figure 4 This is a cross-sectional view of the detection clamp in this utility model.

[0022] In the diagram: 1. Connecting seat; 2. Mounting hole; 3. Electric cylinder; 4. Support seat; 41. Dovetail groove; 42. Dovetail slider; 5. Disc; 51. Negative pressure chamber; 52. First piston; 53. Abutment plate; 531. Connecting sleeve; 532. Second piston; 533. Spring; 54. Slide groove; 55. Slider; 6. Detection clamp; 61. Displacement chamber; 62. Detection block; 63. Circular roller; 64. Detection chamber; 65. Pressure block; 66. Connecting hole; 67. Pressure sensor. Detailed Implementation

[0023] 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.

[0024] A detection device for automotive outer tubes, such as Figure 1 - Figure 4As shown, the device includes a connecting seat 1 with mounting holes 2 for inserting bolts. An electric cylinder 3 is fixedly connected to the front of the connecting seat 1, and a support seat 4 is fixedly connected to the bottom of the electric cylinder 3. A disc 5 is rotatably connected to the bottom of the support seat 4. A servo motor for driving the disc 5 to rotate is installed inside the support seat 4. Detection clamps 6 are respectively installed on both sides below the disc 5 for detection. A negative pressure chamber 51 is located at the center of the disc 5. A first piston 52 is slidably connected to the inner wall of the negative pressure chamber 51. An abutment plate 53 is located below the first piston 52. The disc 5 is positioned on both sides of the negative pressure chamber 51. A sliding groove 54 is provided, and the sliding groove 54 is connected to the negative pressure chamber 51. The inner walls of the two sliding grooves 54 are respectively slidably connected to sliders 55, and the bottom of each slider 55 is fixedly connected to a detection clamp 6. The bottom of the first piston 52 is fixedly connected to a connecting sleeve 531, and the inner wall of the connecting sleeve 531 is slidably connected to a second piston 532. The second piston 532 is fixedly connected to an abutment plate 53. A spring 533 is fixedly connected between the connecting sleeve 531 and the second piston 532. By providing a spring 533 between the connecting sleeve 531 and the second piston 532, the abutment plate 53 can be kept in a state of pressing against the bushing.

[0025] In this embodiment, the connecting seat 1 is used to install on the conveying equipment. When the cylindrical bushing is conveyed to the bottom of the disc 5, the electric cylinder 3 drives the support seat 4 to descend, so that the abutment plate 53 under the disc 5 contacts the top of the bushing. As the abutment plate 53 continues to descend, the first piston 52 is pushed into the upper part of the negative pressure chamber 51, so that the negative pressure chamber 51 is in the position below the first piston 52 and generates negative pressure, thereby drawing out the air in the slide groove 54, so that the slider 55 retracts into the slide groove 54, so as to facilitate the detection clamps 6 on both sides to clamp and detect the bushing. Then, the servo motor in the support seat 4 drives the detection clamps 6 connected to the bottom of the disc 5 to rotate, so as to facilitate the detection of different areas.

[0026] like Figure 1 , Figure 2 As shown, preferably, a dovetail groove 41 is formed on the front of the connecting seat 1, and a dovetail slider 42 that slides in the dovetail groove 41 is fixedly connected to the support seat 4 to increase the stability of the support seat 4 when it moves through the cooperation of the dovetail groove 41 and the dovetail slider 42.

[0027] like Figure 4 As shown, preferably, the clamping surface of the detection clamping plate 6 has a displacement cavity 61, the inner wall of the displacement cavity 61 is slidably connected to a detection block 62, the detection block 62 is rotatably connected to a roller 63 at a position outside the displacement cavity 61, the inner wall of the detection clamping plate 6 has a detection cavity 64, the detection cavity 64 is connected to the displacement cavity 61 through a connecting hole 66, the inner wall of the detection cavity 64 is slidably connected to a pressure block 65, and a pressure sensor 67 is fixedly connected inside the detection cavity 64 at a position above the pressure block 65.

[0028] In this embodiment, when the detection clamp 6 clamps the outer wall of the bushing, the detection block 62 is squeezed by the surface of the bushing and will retract into the detection cavity 64. This causes the compressed air in the detection cavity 64 to be squeezed into the detection cavity 64 from the connection hole 66, which lifts the pressure block 65 and increases the pressure in the detection cavity 64 above the detection block 62. The pressure sensor 67 installed inside the detection cavity 64 senses whether the displayed pressure is within the set pressure range. If it exceeds the range, it is unqualified. When the servo motor drives the detection clamp 6 connected to the bottom of the disc 5 to rotate, if the pressure sensor 67 shows a large range of pressure fluctuations, it indicates that the outer diameter of the bushing is deformed.

[0029] In use, the connecting seat 1 of this utility model is installed on the conveying equipment. When the cylindrical bushing is conveyed to the bottom of the disc 5, the electric cylinder 3 drives the support seat 4 to descend, so that the abutment plate 53 under the disc 5 contacts the top of the bushing. As the abutment plate 53 continues to descend, the first piston 52 is pushed into the negative pressure chamber 51, so that the negative pressure chamber 51 is located below the first piston 52, generating negative pressure. This draws out the air in the slide groove 54, causing the slider 55 to retract into the slide groove 54, so as to facilitate the detection clamps 6 on both sides to clamp and detect the bushing. When the detection clamps 6 clamp the bushing... When the outer wall is fitted, the detection block 62 is squeezed by the bushing surface and retracts into the detection cavity 64. This causes the compressed air in the detection cavity 64 to be forced into the detection cavity 64 from the connection hole 66, lifting the pressure block 65 and increasing the pressure in the detection cavity 64 above the detection block 62. The pressure sensor 67 installed inside the detection cavity 64 senses whether the displayed pressure is within the set pressure range. If it exceeds the range, it is considered unqualified. Then, the servo motor in the support base 4 drives the detection clamp 6 connected to the bottom of the disc 5 to rotate. If the pressure sensor 67 shows a large range of pressure fluctuations, it indicates that the outer diameter of the bushing is deformed.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection device for automotive outer tubes, comprising a connector (1), characterized in that: The connecting seat (1) is provided with mounting holes (2) for inserting bolts. An electric cylinder (3) is fixedly connected to the front of the connecting seat (1), and a support seat (4) is fixedly connected to the bottom of the electric cylinder (3). The bottom of the support base (4) is rotatably connected to a disc (5). The support base (4) is equipped with a servo motor for driving the disc (5) to rotate. Detection clamps (6) for detection are respectively provided on both sides below the disc (5).

2. The detection device for automotive outer tubes according to claim 1, characterized in that: A negative pressure chamber (51) is provided at the center of the disc (5). A first piston (52) is slidably connected to the inner wall of the negative pressure chamber (51). An abutment plate (53) is provided below the first piston (52). Slide grooves (54) are provided on both sides of the disc (5) at the negative pressure chamber (51), and the slide grooves (54) are connected to the negative pressure chamber (51). Sliding blocks (55) are slidably connected to the inner walls of the two slide grooves (54), and detection clamps (6) are fixedly connected to the bottom of the sliding blocks (55).

3. The detection device for automotive outer tubes according to claim 2, characterized in that: The bottom of the first piston (52) is fixedly connected to a connecting sleeve (531), the inner wall of the connecting sleeve (531) is slidably connected to a second piston (532), and the second piston (532) is fixedly connected to an abutment plate (53). A spring (533) is fixedly connected between the connecting sleeve (531) and the second piston (532).

4. The detection device for automotive outer tubes according to claim 1, characterized in that: The front of the connecting seat (1) has a dovetail groove (41), and the support seat (4) has a dovetail slider (42) that slides in the dovetail groove (41).

5. The detection device for automotive outer tubes according to claim 1, characterized in that: The clamping surface of the detection clamp (6) is provided with a displacement cavity (61), and a detection block (62) is slidably connected to the inner wall of the displacement cavity (61).

6. The detection device for automotive outer tubes according to claim 5, characterized in that: The detection block (62) is rotatably connected to a roller (63) located outside the displacement cavity (61).

7. The detection device for automotive outer tubes according to claim 5, characterized in that: The inner wall of the detection clamp (6) is provided with a detection cavity (64), which is connected to the displacement cavity (61) through a connecting hole (66). A pressure block (65) is slidably connected to the inner wall of the detection cavity (64), and a pressure sensor (67) is fixedly connected inside the detection cavity (64) above the pressure block (65).

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