Bearing bore testing machine

Abstract

The utility model discloses bearing inner hole detection machine, including frame, the frame is provided three jaw chuck, the frame one side is provided with crosspiece, the crosspiece is provided with the detection mechanism corresponding with three jaw chuck on, the detection mechanism is including first support cover and second support cover, the installation groove is rotatably provided with two -way ball screw, two -way ball screw both sides are provided with first nut seat and second nut seat respectively, first nut seat is connected with first support cover, second nut seat is connected with second support cover, first support cover one side is provided with first identification rod, second support cover one side is provided with second identification rod, first support cover and second support cover one side all are provided with size automatic display mechanism, and this application can carry out quick centering fixed to bearing, and can carry out detection to bearing's inner hole diameter fast, can carry out digital display to the inner hole diameter size information of detection in real time.

Description

Technical Field

[0001] This utility model belongs to the field of bearing testing technology, specifically relating to a bearing inner hole testing machine. Background Technology

[0002] Bearings are crucial components in modern machinery. Their primary function is to support rotating mechanical parts and reduce the coefficient of friction during transmission. Based on the frictional properties of the moving elements, bearings can be classified into rolling bearings and sliding bearings. Visual inspection of bearings mainly involves checking for scratches and rust on the outer surface, ensuring rivets on the upper and lower ends are properly secured, and checking for missing steel balls. Dimensional inspection primarily involves verifying the inner diameter of the bearing to be within acceptable limits.

[0003] Currently, when inspecting the inner diameter of bearings, it is impossible to quickly center and fix the bearing, and it is also impossible to quickly detect the inner diameter of the bearing. The inner diameter detection effect is poor, and the diameter dimension after detection cannot be quickly displayed, which is inconvenient for the inspectors to observe. Therefore, we propose a bearing inner diameter inspection machine. Utility Model Content

[0004] The purpose of this invention is to provide a bearing inner diameter inspection machine to solve the problems mentioned in the background art, such as the inability to quickly center and fix the bearing when inspecting its inner diameter, the inability to quickly inspect the bearing inner diameter, poor inner diameter inspection results, and the inability to quickly display the diameter after inspection, which makes it inconvenient for inspectors to observe.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bearing inner hole testing machine, including a frame, a three-jaw chuck on the frame, a crossbeam on one side of the frame, the crossbeam being connected to the frame via a longitudinal adjustment mechanism, and a testing mechanism corresponding to the three-jaw chuck on the crossbeam;

[0006] The detection mechanism includes a first support sleeve and a second support sleeve, which are symmetrically arranged on both sides of a cross frame. A mounting groove is provided on one side surface of the cross frame, and a bidirectional ball screw is rotatably arranged in the mounting groove. A first nut and a second nut are respectively provided on both sides of the bidirectional ball screw. The first nut is connected to the first support sleeve, and the second nut is connected to the second support sleeve. A first marking rod is provided on one side of the first support sleeve, and a second marking rod is provided on one side of the second support sleeve.

[0007] The first support sleeve and the second support sleeve are each provided with an automatic size display mechanism on one side, and the cross frame is also provided with a drive structure to control the rotation direction of the bidirectional ball screw.

[0008] Preferably, guide sliders are provided on one side of both the first and second wire female seats. One end of the guide slider is slidably disposed in a guide groove, which is disposed on one side surface of the mounting groove, thereby improving the guiding performance of the first and second wire female seats when they move.

[0009] Preferably, the drive structure includes a cavity disposed on one side of the crossbeam. One end of the bidirectional ball screw is rotatably connected to the cavity. A drive motor is disposed on one side of the crossbeam. A drive bevel gear is disposed on the drive shaft of the drive motor. The drive bevel gear meshes with a driven bevel gear. The driven bevel gear is disposed on one side of the bidirectional ball screw and can control the rotation direction of the bidirectional ball screw.

[0010] Preferably, both the first and second marker rods are semi-cylindrical structures. When the first and second support sleeves are in contact, the first marker rods and the second marker rods combine to form a complete cylinder.

[0011] Preferably, the automatic size display mechanism includes an insulating sleeve disposed on one side of the first support sleeve and the second support sleeve. An installation cavity is provided inside one side of the insulating sleeve, and a measuring electrode plate is disposed on one surface of the installation cavity. The measuring electrode plate corresponds to a reference electrode plate, which is disposed within a crossbeam and arranged parallel to the measuring electrode plate. The measuring electrode plate is electrically connected to a built-in circuit board. A parallel plate capacitance sensor is also disposed on the built-in circuit board. The built-in circuit board is connected to a display screen, which is disposed on one surface of the insulating sleeve and can display the detected bearing inner diameter in real time.

[0012] Preferably, the longitudinal adjustment mechanism includes a first bracket mounted on the frame, an electric push rod disposed within the first bracket, and a piston rod of the electric push rod connected to a second bracket disposed on both sides of the crossbeam, which can adjust the height of the crossbeam to meet the testing needs of bearings of different specifications.

[0013] Preferably, the electric actuator is electrically connected to the control panel on the control box, which is mounted on the frame and can control the extension and retraction of the electric actuator.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) This application can quickly center and fix the bearing, and through the opposing movement of the first and second marker rods, it can quickly detect the inner diameter of the bearing, thereby improving the detection efficiency.

[0016] (2) This application can display the detected inner hole diameter information digitally in real time, which makes it easy for personnel to view quickly and improves the detection accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the detection mechanism in this utility model;

[0019] Figure 3 This is a half-sectional structural diagram of the detection mechanism in this utility model;

[0020] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0021] Figure 5 for Figure 3 Enlarged structural diagram at point B;

[0022] Figure 6 This is a half-sectional structural diagram of the automatic size display mechanism in this utility model;

[0023] In the diagram: 1. Detection mechanism; 2. Automatic size display mechanism; 3. Control box; 4. Three-jaw chuck; 5. Frame; 6. Crossbar; 21. Reference electrode plate; 22. Insulating sleeve; 23. Mounting cavity; 24. Measuring electrode plate; 25. Built-in circuit board; 26. Parallel plate capacitance sensor; 27. Display screen; 61. Second bracket; 62. Electric push rod; 63. First bracket; 101. First support sleeve; 102. Second support sleeve; 103. Mounting groove; 104. Drive motor; 105. Bidirectional ball screw; 106. Second marking rod; 107. First marking rod; 108. First screw nut; 109. Second screw nut; 110. Guide slider; 111. Guide groove; 112. Drive bevel gear; 113. Driven bevel gear; 114. Cavity. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-5 This utility model provides a technical solution: a bearing inner hole inspection machine, including a frame 5, a three-jaw chuck 4 is provided on the frame 5, which can quickly center and fix the bearing, a cross frame 6 is provided on one side of the frame 5, the cross frame 6 is connected to the frame 5 through a longitudinal adjustment mechanism, and an inspection mechanism 1 corresponding to the three-jaw chuck 4 is provided on the cross frame 6;

[0026] The testing mechanism 1 includes a first support sleeve 101 and a second support sleeve 102. The first support sleeve 101 and the second support sleeve 102 are symmetrically arranged on both sides of the cross frame 6. A mounting groove 103 is provided on one side surface of the cross frame 6. A bidirectional ball screw 105 is rotatably arranged in the mounting groove 103. A first screw nut 108 and a second screw nut 109 are respectively provided on both sides of the bidirectional ball screw 105. The first screw nut 108 is connected to the first support sleeve 101, and the second screw nut 109 is connected to the second support sleeve 102. A first marking rod 107 is provided on one side of the first support sleeve 101, and a second marking rod 106 is provided on one side of the second support sleeve 102. A drive structure for controlling the rotation direction of the bidirectional ball screw 105 is also provided on the cross frame 6.

[0027] First, the bearing is fixed by the three-jaw chuck 4. At this time, the first marker rod 107 and the second marker rod 106 are located at the center of the bearing. The height of the cross frame 6 is adjusted by the longitudinal adjustment mechanism, and the first marker rod 107 and the second marker rod 106 are moved into the inner hole of the bearing. The bidirectional ball screw 105 is driven to rotate by the drive structure. The first screw nut 108 and the second screw nut 109 drive the first support sleeve 101 and the second support sleeve 102 to move in opposite directions. The first support sleeve 101 drives the first marker rod 107 to move, and the second support sleeve 102 drives the second marker rod 106 to move. When the first and second scale rods are in contact with the two sides of the inner hole of the bearing, the inner diameter value is automatically displayed by the automatic size display mechanism 2.

[0028] Furthermore, guide sliders 110 are provided on one side of both the first wire nut 108 and the second wire nut 109. One end of the guide slider 110 is slidably disposed in the guide groove 111, which is disposed on one side surface of the mounting groove 103. The first wire nut 108 and the second wire nut 109 drive the guide slider 110 to move within the guide groove 111, thereby improving the guiding performance of the first wire nut 108 and the second wire nut 109 when they move.

[0029] Please see Figure 3 as well as Figure 5 The drive structure includes a cavity 114, which is located on one side of the crossbeam 6. One end of the bidirectional ball screw 105 is rotatably connected to the cavity 114. A drive motor 104 is located on one side of the crossbeam 6. A drive bevel gear 112 is mounted on the drive shaft of the drive motor 104. The drive bevel gear 112 meshes with a driven bevel gear 113. The driven bevel gear 113 is located on one side of the bidirectional ball screw 105 and can control the rotation direction of the bidirectional ball screw 105. The drive motor 104 is electrically connected to the control panel on the control box 3. The drive motor 104 drives the drive bevel gear 112 to rotate, the drive bevel gear 112 drives the driven bevel gear 113 to rotate, and the driven bevel gear 113 drives the bidirectional ball screw 105 to rotate.

[0030] Furthermore, both the first marker rod 107 and the second marker rod 106 are semi-cylindrical structures. When the first support sleeve 101 and the second support sleeve 102 are in contact, the first marker rod 107 and the second marker rod 106 combine to form a complete cylinder.

[0031] Please see Figure 3 as well as Figure 6 Both the first support sleeve 101 and the second support sleeve 102 are provided with an automatic size display mechanism 2 on one side. The automatic size display mechanism 2 includes an insulating sleeve 22, which is provided on one side of the first support sleeve 101 and the second support sleeve 102. An installation cavity 23 is provided on one side of the insulating sleeve 22. A measuring electrode plate 24 is provided on one side surface of the installation cavity 23. The measuring electrode plate 24 corresponds to a reference electrode plate 21. The reference electrode plate 21 is provided in the crossbeam 6 and is arranged parallel to the measuring electrode plate 24. The measuring electrode plate 24 is electrically connected to the built-in circuit board 25. A parallel plate capacitance sensor 26 is also provided on the built-in circuit board 25. The built-in circuit board 25 is connected to a display screen 27, which is provided on one side surface of the insulating sleeve 22 and can display the detected bearing inner diameter in real time.

[0032] When the first support sleeve 101 and the second support sleeve 102 move, the first support sleeve 101 drives the insulating sleeve 22 to move. The movement of the insulating sleeve 22 drives the measuring electrode plate 24 to move along the reference electrode plate 21. When the measuring electrode plate 24 moves, the parallel plate capacitance sensor 26 detects the change in capacitance value in real time. By measuring the change in capacitance, the distance can be calculated based on the capacitance formula. Measurements are achieved by changing the electrode spacing (d), effective area (A), or dielectric constant (ε) through displacement, and the distance values ​​are displayed on the display screen 27.

[0033] Please see Figure 2 The longitudinal adjustment mechanism includes a first bracket 63, which is mounted on the frame 5. An electric push rod 62 is installed inside the first bracket 63. The piston rod of the electric push rod 62 is connected to a second bracket 61, which is mounted on both sides of the cross frame 6. The second bracket 61 is moved by the extension and retraction of the electric push rod 62. The height of the cross frame 6 can be adjusted by the movement of the second bracket 61 to meet the testing needs of bearings of different specifications.

[0034] In this application, the electric push rod 62 and the drive motor 104 are both electrically connected to the control panel on the control box 3. The control box 3 is mounted on the frame 5 and can control the extension and retraction of the drive motor 104 and the electric push rod 62.

[0035] 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 bearing inner bore testing machine, characterized in that: Includes a frame (5), on which a three-jaw chuck (4) is provided, and a crossbeam (6) is provided on one side of the frame (5). The crossbeam (6) is connected to the frame (5) through a longitudinal adjustment mechanism, and a detection mechanism (1) corresponding to the three-jaw chuck (4) is provided on the crossbeam (6). The testing mechanism (1) includes a first support sleeve (101) and a second support sleeve (102). The first support sleeve (101) and the second support sleeve (102) are symmetrically arranged on both sides of the cross frame (6). A mounting groove (103) is provided on one side surface of the cross frame (6). A bidirectional ball screw (105) is rotatably arranged in the mounting groove (103). A first screw nut (108) and a second screw nut (109) are respectively provided on both sides of the bidirectional ball screw (105). The first screw nut (108) is connected to the first support sleeve (101), and the second screw nut (109) is connected to the second support sleeve (102). A first marking rod (107) is provided on one side of the first support sleeve (101), and a second marking rod (106) is provided on one side of the second support sleeve (102). The first support sleeve (101) and the second support sleeve (102) are each provided with an automatic size display mechanism (2), and the cross frame (6) is also provided with a drive structure for controlling the rotation direction of the bidirectional ball screw (105).

2. The bearing inner bore inspection machine according to claim 1, characterized in that: Guide sliders (110) are provided on one side of both the first wire female seat (108) and the second wire female seat (109). One end of the guide slider (110) is slidably disposed in the guide groove (111), and the guide groove (111) is disposed on one side surface of the mounting groove (103).

3. The bearing inner bore inspection machine according to claim 1, characterized in that: The drive structure includes a cavity (114) which is located on one side of the cross frame (6). One end of the bidirectional ball screw (105) is rotatably connected to the cavity (114). A drive motor (104) is located on one side of the cross frame (6). A drive bevel gear (112) is located on the drive shaft of the drive motor (104). The drive bevel gear (112) meshes with a driven bevel gear (113). The driven bevel gear (113) is located on one side of the bidirectional ball screw (105).

4. The bearing inner bore inspection machine according to claim 3, characterized in that: Both the first marker rod (107) and the second marker rod (106) are semi-cylindrical structures. When the first support sleeve (101) and the second support sleeve (102) are in contact, the first marker rod (107) and the second marker rod (106) are combined to form a complete cylinder.

5. The bearing inner bore inspection machine according to claim 1, characterized in that: The automatic size display mechanism (2) includes an insulating sleeve (22), which is disposed on one side of the first support sleeve (101) and the second support sleeve (102). An installation cavity (23) is provided on one side of the insulating sleeve (22), and a measuring electrode plate (24) is disposed on one side surface of the installation cavity (23). The measuring electrode plate (24) corresponds to the reference electrode plate (21). The reference electrode plate (21) is disposed in the cross frame (6) and arranged parallel to the measuring electrode plate (24). The measuring electrode plate (24) is electrically connected to the built-in circuit board (25). A parallel plate capacitance sensor (26) is also disposed on the built-in circuit board (25). The built-in circuit board (25) is connected to the display screen (27), and the display screen (27) is disposed on one side surface of the insulating sleeve (22).

6. The bearing inner bore inspection machine according to claim 1, characterized in that: The longitudinal adjustment mechanism includes a first bracket (63), which is mounted on the frame (5). An electric push rod (62) is installed inside the first bracket (63). The piston rod of the electric push rod (62) is connected to a second bracket (61), which is mounted on both sides of the crossbeam (6).

7. The bearing inner bore inspection machine according to claim 6, characterized in that: The electric push rod (62) is electrically connected to the control panel on the control box (3), which is mounted on the frame (5).

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