A rotating precision testing device for cylindrical roller bearings

Abstract

The utility model relates to precision test technical field especially relates to a kind of rotation precision testing device of cylindrical roller bearing. It is mainly aimed at needing to replace positioning boss, so that positioning boss is adapted with cylindrical roller bearing, this can cause the problem of the lower efficiency of cylindrical roller bearing test, and the following technical scheme is proposed: including detection table, the detection table top is equipped with positioning mouth. The utility model is driven positioning stem and expansion rod to the bearing interior by positioning box, and positioning stem and expansion rod rely on the sliding of sliding rod in the sliding slot inside opened in rotating plate, so that positioning stem and expansion rod stably move horizontally, and coil spring can promote extension rod and connecting shaft rotation in rotating box interior, so that connecting shaft drives rotating plate rotation, so positioning stem and expansion rod can be opened in bearing interior after entering the bearing interior, so it improves the adaptability of positioning stem and expansion rod to bearing interior.

Description

Technical Field

[0001] This utility model relates to the field of precision testing technology, and in particular to a device for testing the rotational precision of cylindrical roller bearings. Background Technology

[0002] Accuracy testing is a crucial step in metrology used to evaluate the accuracy and reliability of measuring equipment or methods. It is mainly measured by comparing the degree of closeness between the measured value and the true value. In the production of cylindrical roller bearings, the rotational accuracy of the bearing is tested by rotating a test structure close to the bearing.

[0003] In use, the cylindrical roller bearing is placed on the test bench surface, and the cylindrical roller bearing is moved by the positioning frame. Then, the cylindrical roller bearing is fixed and supported by a positioning boss. The test structure then moves closer to the cylindrical roller bearing and drives it to rotate. This allows for the precision testing of the cylindrical roller bearing.

[0004] However, when supporting cylindrical roller bearings with different inner diameters, the locating boss needs to be replaced to ensure it is compatible with the bearing, which leads to low testing efficiency. Therefore, this invention proposes a device for testing the rotational accuracy of cylindrical roller bearings. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art that when supporting cylindrical roller bearings with different inner diameters, it is necessary to replace the positioning boss to make the positioning boss compatible with the cylindrical roller bearing, which leads to low testing efficiency of cylindrical roller bearings. This invention proposes a rotating accuracy testing device for cylindrical roller bearings.

[0006] The technical solution of this utility model: A rotational accuracy testing device for cylindrical roller bearings, including a testing platform, a positioning port is provided on the top of the testing platform, a positioning rod is provided inside the positioning port, an expansion rod is provided inside the positioning port away from the positioning rod, the positioning rod is inclined away from the positioning port, the expansion rod is in a "J" shape away from the positioning port, and rotating plates are provided on both sides of the positioning rod and the expansion rod.

[0007] The rotating plate has a sliding groove inside. There are two sets of sliding grooves arranged symmetrically. One set of sliding grooves is opened at the position of the positioning rod, and the other set of sliding grooves is opened at the position of the expansion rod. A sliding rod is slidably connected inside the sliding groove. The sliding rod is fixedly connected to both sides of the positioning rod and the expansion rod.

[0008] A connecting rod is fixedly connected to one side of the rotating plate, and a connecting shaft is fixedly connected to the side of the rotating plate away from the connecting rod. A positioning box is rotatably connected to the outside of the connecting shaft, and a driving assembly is provided outside the positioning box.

[0009] Optionally, the drive assembly includes an extension rod, one end of which is fixedly connected to the end of the connecting shaft away from the rotating plate, and a worm spring is fixedly connected to the outside of the extension rod.

[0010] Optionally, a rotating box is fixedly connected to the end of the worm spring away from the extension rod, the rotating box is fixedly connected to one side of the positioning box, and a telescopic rod is provided at the bottom of the positioning box.

[0011] Optionally, a base is fixedly connected to the bottom of the telescopic rod, and the base is fixedly connected to one side of the testing platform.

[0012] Optionally, a test head is slidably connected to the base near the testing platform, and the test head is arranged in an inverted "L" shape.

[0013] Optionally, a positioning block is slidably connected to the top of the testing platform, and there are two sets of positioning blocks arranged symmetrically.

[0014] Optionally, the positioning blocks are arranged in two sets in a "U" shape, with one set of positioning blocks located outside the positioning port.

[0015] Optionally, a support frame is fixedly connected to the side of the positioning block away from the testing table, and the support frame is slidably connected to the side of the base near the testing table.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] This invention employs a positioning box to drive the positioning rod and expansion rod closer to the inside of the bearing. The positioning rod and expansion rod slide within the groove opened in the rotating plate by the sliding rod, thereby allowing the positioning rod and expansion rod to move laterally stably. The worm spring can push the extension rod and connecting shaft to rotate inside the rotating box, thereby causing the connecting shaft to drive the rotating plate to rotate. In this way, after the positioning rod and expansion rod enter the inside of the bearing, they can be spread out inside the bearing, thus improving the adaptability of the positioning rod and expansion rod to the inside of the bearing. Attached Figure Description

[0018] Figure 1 A schematic diagram of a device for testing the rotational accuracy of cylindrical roller bearings is provided.

[0019] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the rotating box;

[0022] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0023] Figure 6 This is a cross-sectional structural diagram of the positioning box;

[0024] Figure 7 for Figure 6 Enlarged diagram of point C in the middle.

[0025] Figure label:

[0026] 1. Testing table; 2. Base; 3. Positioning port; 4. Test head; 5. Support frame; 6. Positioning block; 7. Positioning rod; 8. Expansion rod; 9. Sliding rod; 10. Rotating plate; 11. Slide groove; 12. Connecting shaft; 13. Connecting rod; 14. Extension rod; 15. Worm spring; 16. Rotating box; 17. Positioning box; 18. Telescopic rod. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0028] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0029] 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.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, this utility model proposes a rotational accuracy testing device for cylindrical roller bearings, including a testing platform 1. A positioning port 3 is provided on the top of the testing platform 1. A positioning rod 7 is disposed inside the positioning port 3. An expansion rod 8 is disposed inside the positioning port 3 away from the positioning rod 7. The positioning rod 7 and the expansion rod 8 can fix the inner diameter of the bearing. The positioning rod 7 is inclined away from the positioning port 3, and the expansion rod 8 is J-shaped away from the positioning port 3. Rotating plates 10 are provided on both sides of the positioning rod 7 and the expansion rod 8. The shapes of the positioning rod 7 and the expansion rod 8 can be synchronized with the rotating plates 10 for synchronous opening and closing operations. Two sets of sliding grooves 11 are symmetrically arranged inside the rotating plates 10. One set of slide grooves 11 is located at the position of the positioning rod 7, and the other set of slide grooves 11 is located at the position of the expansion rod 8. A sliding rod 9 is slidably connected inside the slide groove 11. The rotating plate 10 can drive the sliding rod 9 to slide by relying on the slide groove 11, thereby allowing the positioning rod 7 and the expansion rod 8 to open and close. The sliding rod 9 is fixedly connected to both sides of the positioning rod 7 and the expansion rod 8. A connecting rod 13 is fixedly connected to the opposite side of the rotating plate 10. The connecting rod 13 can connect the two rotating plates 10. A connecting shaft 12 is fixedly connected to the side of the rotating plate 10 away from the connecting rod 13. A positioning box 17 is rotatably connected to the outside of the connecting shaft 12. The rotating plate 10 is supported inside the positioning box 17 by the connecting shaft 12. A drive assembly is provided on the outside of the positioning box 17.

[0034] For further details, please refer to Figure 1 , 4 and Figure 5The drive assembly includes an extension rod 14, one end of which is fixedly connected to the end of the connecting shaft 12 away from the rotating plate 10. The extension rod 14 can drive the connecting shaft 12 and the rotating plate 10 to rotate. A worm spring 15 is fixedly connected to the outside of the extension rod 14, which can push the extension rod 14 to rotate. A rotating box 16 is fixedly connected to the end of the worm spring 15 away from the extension rod 14, which can fix the position of the worm spring 15. The rotating box 16 is fixedly connected to one side of the positioning box 17, and can be connected to the positioning box 17 to ensure that the position of the rotating box 16 is fixed. A telescopic rod 18 is provided at the bottom of the positioning box 17, and a base 2 is fixedly connected to the bottom of the telescopic rod 18. The telescopic rod 18 can drive the positioning box 17 to move closer to the inner diameter of the bearing at the position of the base 2. The base 2 is fixedly connected to one side of the testing table 1, and a test head 4 is slidably connected to the side of the base 2 near the testing table 1. The test head 4 can measure the rotational accuracy of the bearing. The test head 4 is set in an inverted "L" shape.

[0035] For further details, please refer to Figure 1 A positioning block 6 is slidably connected to the top of the testing table 1. The positioning block 6 can correct the position of the bearing on the top of the testing table 1 and can also drive the bearing to move. There are two sets of positioning blocks 6 arranged symmetrically and in a "U" shape. The structure of the positioning block 6 allows it to be positioned and moved with bearings of different inner and outer diameters. One set of positioning blocks 6 is located outside the positioning port 3. The positioning block 6 can drive the bearing to move to the position of the positioning port 3. A support frame 5 is fixedly connected to the side of the positioning block 6 away from the testing table 1. The support frame 5 can control the movement of the positioning block 6. The support frame 5 is slidably connected to the side of the base 2 close to the testing table 1.

[0036] In this embodiment, when monitoring the rotational accuracy of the bearing, the bearing is first placed on the top of the test platform 1. Then, the support frame 5 can move the bearing. The support frame 5 will move in a rectangular motion, thereby moving the bearing to the positioning port 3. The above structure is supported by the base 2. At this time, the telescopic rod 18 will push the extension rod 14 closer to the positioning port 3 on the top of the base 2, so that the positioning rod 7 and the expansion rod 8 can open and fix the bearing at the inner diameter position. This allows the test head 4 to move closer to the outside of the bearing, thereby driving the outside of the bearing to rotate, thus enabling the bearing to be tested.

[0037] When the positioning rod 7 and the expansion rod 8 are inserted into the bearing, the ends of the positioning rod 7 and the expansion rod 8 will press against the inside of the bearing. The rounded corners of the positioning rod 7 and the expansion rod 8 can be squeezed into the bearing, thus fixing the bearing. The synchronous opening and closing of the positioning rod 7 and the expansion rod 8 is controlled by the rotating plate 10. The rotating plate 10 will drive the sliding rod 9 to slide inside the sliding groove 11. In this way, the sliding rod 9 can drive the positioning rod 7 and the expansion rod 8 to open up inside the bearing, thereby fixing the bearing.

[0038] When the rotating plate 10 is rotated open, it is connected to each other through the connecting rod 13 to ensure the synchronous effect of the opening and closing of the positioning rod 7 and the expansion rod 8. The rotating plate 10 is supported inside the positioning box 17 through the connecting shaft 12, so that the positioning rod 7 and the expansion rod 8 can run inside the positioning box 17. When the positioning rod 7 and the expansion rod 8 are gradually squeezed into the bearing, the positioning rod 7 and the expansion rod 8 will drive the sliding rod 9 to slide along the inside of the slide groove 11. In this way, the sliding rod 9 will drive the rotating plate 10 to rotate. In this way, the rotating plate 10 can drive the worm spring 15 to wind up inside the rotating box 16. The pushing force of the worm spring 15 inside the rotating box 16 can drive the extension rod 14, the connecting shaft 12 and the rotating plate 10 to rotate inside the positioning box 17.

[0039] In this way, the rotating plate 10 will drive the positioning rod 7 and the expansion rod 8 to open up the inner wall of the bearing, thereby fixing the bearing with the positioning rod 7 and the expansion rod 8. This allows the test head 4 to approach the outside of the bearing, thereby detecting the rotational accuracy of the bearing.

[0040] It should be noted that this device uses a positioning box 17 to drive the positioning rod 7 and the expansion rod 8 closer to the inside of the bearing. The positioning rod 7 and the expansion rod 8 slide inside the groove 11 opened in the rotating plate 10 by the sliding rod 9, so that the positioning rod 7 and the expansion rod 8 can move laterally stably. The worm spring 15 can push the extension rod 14 and the connecting shaft 12 to rotate inside the rotating box 16, so that the connecting shaft 12 drives the rotating plate 10 to rotate. In this way, after the positioning rod 7 and the expansion rod 8 enter the inside of the bearing, they can be spread out inside the bearing, which improves the adaptability of the positioning rod 7 and the expansion rod 8 to the inside of the bearing.

[0041] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A rotating precision testing device for cylindrical roller bearings, comprising a detection table (1), a positioning opening (3) is formed on the top of the detection table (1), characterized in that: The positioning port (3) is provided with a positioning rod (7) inside, and an expansion rod (8) is provided inside the positioning port (3) away from the positioning rod (7). The positioning rod (7) is inclined away from the positioning port (3), and the expansion rod (8) is in a "J" shape away from the positioning port (3). Rotating plates (10) are provided on both sides of the positioning rod (7) and the expansion rod (8). The rotating plate (10) has a sliding groove (11) inside. There are two sets of sliding grooves (11) arranged symmetrically. One set of sliding grooves (11) is opened at the position of the positioning rod (7), and the other set of sliding grooves (11) is opened at the position of the expansion rod (8). A sliding rod (9) is slidably connected inside the sliding groove (11). The sliding rod (9) is fixedly connected to both sides of the positioning rod (7) and the expansion rod (8). A connecting rod (13) is fixedly connected to one side of the rotating plate (10), and a connecting shaft (12) is fixedly connected to the side of the rotating plate (10) away from the connecting rod (13). A positioning box (17) is rotatably connected to the outside of the connecting shaft (12), and a driving component is provided on the outside of the positioning box (17).

2. The rotational accuracy testing device for a cylindrical roller bearing according to claim 1, characterized in that The drive assembly includes an extension rod (14), one end of which is fixedly connected to the end of the connecting shaft (12) away from the rotating plate (10), and a worm spring (15) is fixedly connected to the outside of the extension rod (14).

3. The rotational accuracy testing device for cylindrical roller bearings according to claim 2, characterized in that, The end of the worm spring (15) away from the extension rod (14) is fixedly connected to a rotating box (16), the rotating box (16) is fixedly connected to one side of the positioning box (17), and the bottom of the positioning box (17) is provided with a telescopic rod (18).

4. The rotational accuracy testing device for cylindrical roller bearings according to claim 3, characterized in that, The bottom of the telescopic rod (18) is fixedly connected to a base (2), and the base (2) is fixedly connected to one side of the testing table (1).

5. The rotational accuracy testing device for cylindrical roller bearings according to claim 4, characterized in that, The base (2) is slidably connected to the test head (4) on the side near the test station (1), and the test head (4) is arranged in an inverted "L" shape.

6. The rotational accuracy testing device for cylindrical roller bearings according to claim 1, characterized in that, The top of the testing platform (1) is slidably connected to a positioning block (6), and there are two sets of positioning blocks (6) arranged symmetrically.

7. The rotational accuracy testing device for cylindrical roller bearings according to claim 6, characterized in that, The positioning blocks (6) are arranged in two sets in a "U" shape, with one set of the positioning blocks (6) located outside the positioning port (3).

8. The rotational accuracy testing device for cylindrical roller bearings according to claim 7, characterized in that, The positioning block (6) is fixedly connected to a support frame (5) on the side away from the testing table (1), and the support frame (5) is slidably connected to the base (2) on the side close to the testing table (1).

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