Thin-wall cylinder end face flatness detection device

Abstract

The utility model discloses a thin-wall cylinder end face flatness detection device, which comprises a detection table, a square tube is fixed on the detection table, the square tube vertically penetrates through the detection table, a rotating shaft is rotatably connected in the square tube through a bearing, and a driving mechanism for controlling the rotating shaft to rotate is arranged at the lower end of the rotating shaft. The outer side face of the upper end of the rotating shaft is sleeved with a slidable supporting plate, and the lower end of the supporting plate is provided with a lifting mechanism controlling the supporting plate to move up and down. A measuring mechanism is arranged above the supporting plate and comprises a connecting plate, a guide wheel, a guide wheel frame, a sleeve, a sliding column and a spring, the guide wheel is rotationally connected to the lower end of the guide wheel frame, the upper end of the guide wheel frame is fixedly connected with the sliding column, the upper end of the sliding column is slidably connected into the sleeve, and the spring is arranged in the sleeve. The thin-wall cylinder end face flatness detection device can improve the detection efficiency of the thin-wall cylinder end face flatness, guarantees the detection precision, and facilitates the improvement of the production takt.

Description

Technical Field

[0001] This utility model relates to the field of cylinder testing technology, specifically a device for testing the flatness of the end face of a thin-walled cylinder. Background Technology

[0002] Thin-walled cylinders are widely used in many fields such as aerospace, machinery manufacturing, and chemical equipment. The flatness of their end faces has a significant impact on subsequent assembly accuracy, sealing performance, and overall operational stability of the equipment.

[0003] Traditional methods for detecting the flatness of thin-walled cylinder end faces often involve manual measurement using tools such as feeler gauges and dial indicators. This method is not only inefficient but also highly subjective and prone to measurement errors, making it difficult to meet the requirements for high-precision thin-walled cylinder testing. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a device for detecting the flatness of the end face of a thin-walled cylinder, which can improve the detection efficiency of the flatness of the end face of a thin-walled cylinder while ensuring the detection accuracy, and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting the flatness of the end face of a thin-walled cylinder, comprising a detection platform, a square tube fixed on the detection platform, the square tube vertically penetrating the detection platform, a rotating shaft rotatably connected inside the square tube via a bearing, a drive mechanism for controlling the rotation of the rotating shaft being provided at the lower end of the rotating shaft, a slidable support plate sleeved on the outer side of the upper end of the rotating shaft, and a lifting mechanism for controlling the up-and-down movement of the support plate being provided at the lower end of the support plate;

[0006] A measuring mechanism is provided above the pallet. The measuring mechanism includes a connecting plate, a guide wheel, a guide wheel frame, a sleeve, a sliding column, and a spring. The guide wheel is rotatably connected to the lower end of the guide wheel frame. The upper end of the guide wheel frame is fixedly connected to the sliding column. The upper end of the sliding column is slidably connected inside the sleeve. The sleeve is fixed to the lower surface of the connecting plate. The spring is disposed between the connecting plate and the sliding column. A pressure sensor is provided at the connection between the spring and the connecting plate.

[0007] A horizontal adjustment mechanism is connected to one side of the connecting plate, which is used to adjust the horizontal position of the guide wheel according to the cylinder with different inner diameters.

[0008] As a preferred embodiment of this utility model, the horizontal adjustment mechanism includes a fixing block, a screw, a locking nut, and a mounting block. The fixing block is fixed to the upper surface of the support plate. The screws are symmetrically arranged on both sides of the fixing block. Each screw is provided with two locking nuts, which are located on both sides of the fixing block. One end of the screw is fixedly connected to the mounting block, and the mounting block is fixedly connected to the connecting plate.

[0009] As a preferred embodiment of this utility model, the lifting mechanism includes a fixed plate and an electric lifting rod. The fixed plate is fixed to the outer side of the rotating shaft. There are two electric lifting rods, with the fixed ends of the two electric lifting rods symmetrically fixed to the upper surface of the fixed plate. The telescopic ends of the electric lifting rods are connected to the lower surface of the support plate.

[0010] As a preferred technical solution of this utility model, the driving mechanism includes a driving motor, a driving gear and a driven gear. The driving motor is fixed on the lower surface of the detection table. The output shaft of the driving motor is connected to the driving gear. The driving gear and the driven gear are meshed together. The driven gear is fixed on the lower end of the outer side of the rotating shaft.

[0011] As a preferred embodiment of this utility model, the outer surface of the square tube is evenly provided with positioning mechanisms for fixing the inner cavity of the thin-walled cylinder. The positioning mechanism includes an electric telescopic rod and a pressure block. The fixed end of the electric telescopic rod is fixed to the outer surface of the square tube, and the telescopic end of the electric telescopic rod is connected to the pressure block.

[0012] As a preferred embodiment of this utility model, the contact end between the pressure block and the inner side of the thin-walled cylinder is an arc-shaped structure, and the outer side of the pressure block is wrapped with rubber.

[0013] As a preferred embodiment of this utility model, a reinforcing plate is integrally connected to one side of the testing platform. A display and a control switch are provided on the reinforcing plate. The output end of the pressure sensor is electrically connected to the input end of the display. The output end of the control switch is electrically connected to the input ends of the positioning mechanism, the driving mechanism, and the lifting mechanism, respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This thin-walled cylinder end face flatness detection device uses a guide wheel in the measuring mechanism to make a circular motion along the end face of the thin-walled cylinder. By utilizing the pressure changes applied by the guide wheel to the spring and pressure sensor, it accurately measures whether the cylinder end face is flat, greatly improving the measurement accuracy of the end face. By setting a horizontal adjustment mechanism, the position of the guide wheel can be adjusted according to cylinders with different inner diameters. By setting a lifting mechanism, the height of the guide wheel can be adjusted, making it suitable for flatness detection of cylinders of different lengths. By setting a drive mechanism, the guide wheel can be controlled to move along the trajectory of the cylinder end face, greatly improving the detection efficiency. Attached Figure Description

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

[0016] Figure 2 This is the front view of the present utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 for Figure 2 The left view;

[0019] Figure 5 for Figure 2 Top view.

[0020] In the diagram: 1. Testing platform, 2. Square tube, 3. Rotating shaft, 4. Drive mechanism, 41. Drive motor, 42. Drive gear, 43. Driven gear, 5. Support plate, 6. Lifting mechanism, 61. Fixed plate, 62. Electric lifting rod, 7. Horizontal adjustment mechanism, 71. Fixed block, 72. Screw, 73. Locking nut, 74. Mounting block, 8. Measuring mechanism, 81. Connecting plate, 82. Guide wheel, 83. Guide wheel frame, 84. Sleeve, 85. Sliding column, 86. Spring, 9. Positioning mechanism, 91. Electric telescopic rod, 92. Pressure block, 10. Reinforcing plate, 11. Display, 12. Control switch. Detailed Implementation

[0021] 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 (for ease of description and understanding, hereinafter referred to as...). Figure 2 (The above is described above). Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figure 1-5This utility model provides a technical solution: a device for detecting the flatness of the end face of a thin-walled cylinder, including a detection platform 1, a square tube 2 fixed on the detection platform 1, the square tube 2 vertically penetrating the detection platform 1, a rotating shaft 3 rotatably connected inside the square tube 2 via a bearing, a drive mechanism 4 for controlling the rotation of the rotating shaft 3 is provided at the lower end of the rotating shaft 3, the drive mechanism 4 includes a drive motor 41, a drive gear 42 and a driven gear 43, the drive motor 41 is fixed on the lower surface of the detection platform 1, the output shaft of the drive motor 41 is connected to the drive gear 42, the drive gear 42 is meshed with the driven gear 43, the driven gear 43 is fixed on the lower end of the outer side of the rotating shaft 3, the drive motor 41 controls the rotation of the drive gear 42, thereby driving the driven gear 43 and the rotating shaft 3 to rotate, thereby driving the guide wheel 82 to move along the end face of the thin-walled cylinder;

[0023] A slidable support plate 5 is sleeved on the outer side of the upper end of the rotating shaft 3. A lifting mechanism 6 for controlling its up and down movement is provided at the lower end of the support plate 5. The lifting mechanism 6 includes a fixed plate 61 and an electric lifting rod 62. The fixed plate 61 is fixed on the outer side of the rotating shaft 3. There are two electric lifting rods 82. The fixed ends of the two electric lifting rods 82 are symmetrically fixed on the upper end face of the fixed plate 61. The telescopic ends of the electric lifting rods 82 are connected to the lower surface of the support plate 5. The up and down movement of the support plate 5 is controlled by the telescopic movement of the electric lifting rods 82, thereby adjusting the height position of the guide wheel 82 according to the thin-walled cylinder of different lengths.

[0024] The support plate 5 is preferably of a Z-shaped structure. A measuring mechanism 8 is provided on the top of the support plate 5. The measuring mechanism 8 includes a connecting plate 81, a guide wheel 82, a guide wheel frame 83, a sleeve 84, a sliding column 85, and a spring 86. The guide wheel 82 is rotatably connected to the lower end of the guide wheel frame 83. The upper end of the guide wheel frame 83 is fixedly connected to the sliding column 85. The upper end of the sliding column 85 is slidably connected inside the sleeve 84. The sleeve 84 is fixed to the lower surface of the connecting plate 81. The spring 86 is located between the connecting plate 81 and the sliding column 85. A pressure sensor is provided at the connection between the spring 86 and the connecting plate 81. When the guide wheel 82 moves along the end face of the thin-walled cylinder, it will exert pressure on the spring 86 through the sliding column 85. The spring 86 transmits the pressure to the pressure sensor, which will generate a pressure signal. If the end face of the thin-walled cylinder is flat, the pressure signal will not change. If the end face of the thin-walled cylinder has a bulge or a depression, the pressure signal will change. The change in the pressure signal can accurately determine whether the end face of the thin-walled cylinder is flat.

[0025] To facilitate adjustment of the horizontal position of the guide wheel 82 according to the inner diameter of different thin-walled cylinders, and to allow the guide wheel 82 to travel along the end face of the thin-walled cylinder, a horizontal adjustment mechanism 7 is connected to one side of the connecting plate 81.

[0026] The horizontal adjustment mechanism 7 includes a fixing block 71, a screw 72, a locking nut 73, and a mounting block 74. The fixing block 71 is fixed to the upper surface of the support plate 5. The screws 72 are symmetrically arranged on both sides of the fixing block 71. Each screw 72 is provided with two locking nuts 73, which are located on both sides of the fixing block 71. One end of the screw 72 is fixedly connected to the mounting block 74, and the mounting block 74 is fixedly connected to the connecting plate 81. The screw 72 is moved by loosening the locking nuts 73. When the guide wheel 82 is located on the end face of the thin-walled cylinder, the locking nuts 73 are tightened to fix the horizontal position of the guide wheel 82.

[0027] To ensure the thin-walled cylinder is fixed around the central axis of the rotating shaft 3 and to facilitate the inspection of its end face flatness, four positioning mechanisms 9 for fixing the inner cavity of the thin-walled cylinder are evenly distributed on the outer side of the square tube 2. The positioning mechanism 9 includes an electric telescopic rod 91 and a pressure block 92. The fixed end of the electric telescopic rod 91 is fixed to the outer side of the square tube 2, and the telescopic end of the electric telescopic rod 91 is connected to the pressure block 92. The thin-walled cylinder is vertically sleeved on the outer side of the rotating shaft 3. By simultaneously extending and retracting the four electric telescopic rods 91, the same amount of elongation is ensured, thereby fixing the thin-walled cylinder around the central axis of the rotating shaft 3.

[0028] To avoid damage to the inner surface of the thin-walled cylinder, the contact end between the pressure block and the inner surface of the thin-walled cylinder is an arc-shaped structure, and the outer surface of the pressure block is wrapped with rubber.

[0029] To facilitate the operation of this testing device, a reinforcing plate 10 is integrally connected to one side of the testing platform 1. A display 11 and a control switch 12 are installed on the reinforcing plate 10. The output end of the pressure sensor is electrically connected to the input end of the display 11. The pressure sensor transmits the pressure signal to the display 11, and the pressure curve is displayed on the display 11. The output end of the control switch 12 is electrically connected to the input ends of the drive motor 41, the electric lifting rod 62, and the electric telescopic rod 91, respectively.

[0030] In use: First, place the thin-walled cylinder to be tested on the outside of the device. Then, control the four electric telescopic rods 91 to extend synchronously through the control switch 12, so that the pressure block 92 contacts the inner wall of the thin-walled cylinder, thereby positioning the thin-walled cylinder. Then, according to the height of the thin-walled cylinder, control the electric lifting rod 62 to push the support plate 5 to rise and fall, so that the height of the guide wheel 82 is the same as the height of the end face of the thin-walled cylinder to be tested. Then, move the screw 72 to make the guide wheel 82 contact the end face of the thin-walled cylinder. At this time, the pressure signal transmitted by the pressure sensor is the reference signal. The drive motor 41 controls the drive gear 42 and the driven gear 43 to rotate, thereby making the rotating shaft 3 rotate, driving the guide wheel 82 to make a circular motion along the end face of the thin-walled cylinder. Observe the pressure curve on the display 11. If the pressure curve fluctuates, it indicates that the end face is not flat; if the pressure curve remains relatively stable, it indicates that the end face is flat.

[0031] This invention transmits pressure signals through the spring 86 in the measuring mechanism 8, thereby determining the flatness of the thin-walled cylinder end face based on the pressure signals, greatly improving measurement efficiency and accuracy. By setting up a horizontal adjustment mechanism 7 and a lifting mechanism 6, the position of the guide wheel 82 can be adjusted according to the diameter and length of the thin-walled cylinder, expanding the applicability of this device.

[0032] The parts of the utility model not described in detail are prior art. Although embodiments of the utility model 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 utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the flatness of the end face of a thin-walled cylinder, comprising a testing platform (1), characterized in that: A square tube (2) is fixed on the testing platform (1). The square tube (2) passes vertically through the testing platform (1). A rotating shaft (3) is rotatably connected inside the square tube (2) through a bearing. A drive mechanism (4) for controlling the rotation of the rotating shaft (3) is provided at the lower end of the rotating shaft (3). A slidable support plate (5) is sleeved on the outer side of the upper end of the rotating shaft (3). A lifting mechanism (6) for controlling the up and down movement of the support plate (5) is provided at the lower end of the support plate (5). A measuring mechanism (8) is provided above the pallet (5). The measuring mechanism (8) includes a connecting plate (81), a guide wheel (82), a guide wheel frame (83), a sleeve (84), a sliding column (85), and a spring (86). The guide wheel (82) is rotatably connected to the lower end of the guide wheel frame (83). The upper end of the guide wheel frame (83) is fixedly connected to the sliding column (85). The upper end of the sliding column (85) is slidably connected inside the sleeve (84). The sleeve (84) is fixed to the lower surface of the connecting plate (81). The spring (86) is provided between the connecting plate (81) and the sliding column (85). A pressure sensor is provided at the connection between the spring (86) and the connecting plate (81). A horizontal adjustment mechanism (7) is connected to one side of the connecting plate (81) for adjusting the horizontal position of the guide wheel (82) according to the cylinder with different inner diameters.

2. The thin-walled cylinder end face flatness detection device according to claim 1, characterized in that: The horizontal adjustment mechanism (7) includes a fixing block (71), a screw (72), a locking nut (73), and a mounting block (74). The fixing block (71) is fixed to the upper surface of the support plate (5). The screws (72) are symmetrically arranged on both sides of the fixing block (71). Each screw (72) is provided with two locking nuts (73). The two locking nuts (73) are located on both sides of the fixing block (71). One end of the screw (72) is fixedly connected to the mounting block (74). The mounting block (74) is fixedly connected to the connecting plate (81).

3. The thin-walled cylinder end face flatness detection device according to claim 1, characterized in that: The lifting mechanism (6) includes a fixed plate (61) and an electric lifting rod (62). The fixed plate (61) is fixed to the outer side of the rotating shaft (3). There are two electric lifting rods (62). The fixed ends of the two electric lifting rods (62) are symmetrically fixed to the upper surface of the fixed plate (61). The telescopic ends of the electric lifting rods (62) are connected to the lower surface of the support plate (5).

4. The thin-walled cylinder end face flatness detection device according to claim 1, characterized in that: The drive mechanism (4) includes a drive motor (41), a drive gear (42) and a driven gear (43). The drive motor (41) is fixed on the lower surface of the detection table (1). The output shaft of the drive motor (41) is connected to the drive gear (42). The drive gear (42) meshes with the driven gear (43). The driven gear (43) is fixed on the lower end of the outer side of the rotating shaft (3).

5. The thin-walled cylinder end face flatness detection device according to claim 1, characterized in that: The outer side of the square tube (2) is evenly distributed with positioning mechanisms (9) for fixing the inner cavity of the thin-walled cylinder. The positioning mechanism (9) includes an electric telescopic rod (91) and a pressure block (92). The fixed end of the electric telescopic rod (91) is fixed to the outer side of the square tube (2), and the telescopic end of the electric telescopic rod (91) is connected to the pressure block (92).

6. The thin-walled cylinder end face flatness detection device according to claim 5, characterized in that: The contact end between the pressure block and the inner side of the thin-walled cylinder is an arc-shaped structure, and the outer side of the pressure block is wrapped with rubber.

7. The thin-walled cylinder end face flatness detection device according to claim 4, characterized in that: A reinforcing plate (10) is integrally connected to one side of the testing platform (1). A display (11) and a control switch (12) are provided on the reinforcing plate (10). The output end of the pressure sensor is electrically connected to the input end of the display (11). The output end of the control switch (12) is electrically connected to the input ends of the positioning mechanism (9), the driving mechanism (4), and the lifting mechanism (6), respectively.

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