A silicon nitride ceramic bearing dynamic balancing test tool

Abstract

The utility model discloses a kind of silicon nitride ceramic bearing dynamic balance test tool, belong to dynamic balance test field.A kind of silicon nitride ceramic bearing dynamic balance test tool, including rack and the positioning frame of detachable installation on rack, further include: rotation is installed on the rack gas expansion shaft, wherein, the gas expansion shaft is provided with the driving part for driving gas expansion shaft rotation;At least two groups of laser vibration meter, the laser vibration meter is set on gas expansion shaft upper end, wherein, the laser vibration meter is provided with adjusting member;Positioning frame of sliding connection on the rack;The utility model can realize the quick positioning of multiple silicon nitride ceramic bearings by using gas expansion shaft, subsequently under the driving of driving part, make multiple silicon nitride ceramic bearings rotate, and the position adjustment of multiple laser vibration meters using adjusting member, can realize one-to-one monitoring, to improve silicon nitride ceramic bearing dynamic balance detection quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of dynamic balancing testing technology, and in particular to a dynamic balancing testing fixture for silicon nitride ceramic bearings. Background Technology

[0002] Silicon nitride ceramic bearings are widely used in aerospace, new energy vehicles, precision machine tools, medical devices and other fields due to their superior performance. For example, in the aerospace field, lightweight and high performance are key requirements for equipment, and silicon nitride ceramic bearings are an ideal choice due to their low density and high strength. In the new energy vehicle field, silicon nitride ceramic bearings can effectively reduce friction loss, improve motor efficiency and extend bearing life. During the production of silicon nitride ceramic bearings, dynamic balancing testing fixtures are needed to adjust the mass distribution of rotating parts to achieve a balanced centrifugal force generated during rotation, thereby ensuring stable operation of the bearing.

[0003] Existing dynamic balancing testing fixtures are not convenient for simultaneously positioning multiple bearings during use, which reduces the efficiency of bearing installation. Furthermore, during the testing process, it is impossible to accurately obtain the dynamic balance test information of each bearing, thereby reducing the testing efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing dynamic balancing test fixtures are not convenient for positioning and testing multiple bearings, and to propose a dynamic balancing test fixture for silicon nitride ceramic bearings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dynamic balancing test fixture for silicon nitride ceramic bearings includes a frame and a positioning frame detachably mounted on the frame. It further includes: an air shaft rotatably mounted on the frame, wherein the air shaft is provided with a driving component for rotating the air shaft; at least two sets of laser vibration meters, each laser vibration meter being positioned at the upper end of the air shaft and having an adjusting component; and a positioning frame slidably connected to the frame, the positioning frame having a forming groove for positioning the air shaft, and a moving component on the positioning frame.

[0007] In order to drive the air shaft to rotate the silicon nitride ceramic bearing, preferably, the driving component includes a motor fixedly connected to the frame, and synchronous pulleys are fixedly sleeved on both the air shaft and the motor, and the two synchronous pulleys are connected by a synchronous belt drive.

[0008] To further limit the movement of the motor, a positioning ring is fixedly fitted onto the motor, and the positioning ring is fixedly connected to the frame.

[0009] For adjusting the height and spacing of the laser vibrometer, preferably, the adjusting component includes a first electric telescopic rod fixedly installed on the positioning frame. The telescopic end of the first electric telescopic rod is fixedly connected to a limiting frame. The limiting frame is slidably connected inside the positioning frame. A sliding rod is fixedly connected to the inner cavity of the limiting frame. A sliding sleeve is slidably connected to the sliding rod. The laser vibrometer is fixedly connected to the sliding sleeve.

[0010] To limit the movement of the laser vibrometer, preferably, a lead screw is fixedly connected to the sliding sleeve, and a torsion block that abuts against the limiting frame is threaded onto the lead screw.

[0011] To improve the stability of the vertical movement of the limiting frame, preferably, a limiting rod is fixedly connected to the positioning frame, and a limiting plate that is fixedly connected to the limiting frame is slidably connected to the limiting rod.

[0012] In order to adjust the positioning frame's limit on the air shaft, preferably, the moving part includes a fixed plate fixedly installed on the frame, and a second electric telescopic rod is fixedly installed on the fixed plate, the telescopic end of the second electric telescopic rod being fixedly connected to the positioning frame.

[0013] To improve the stability of the second electric telescopic pole, preferably, a positioning ring is fixedly sleeved on the second electric telescopic pole, and the positioning ring is fixedly connected to the fixing plate.

[0014] To improve the stability of the air shaft rotation, preferably, positioning seats are arranged circumferentially and at equal intervals in the forming groove, and the ends of the positioning seats are provided with balls.

[0015] To improve the stability of the lateral movement of the positioning frame, preferably, a dovetail block is fixedly connected to the positioning frame, and a dovetail groove is provided on the frame to cooperate with the dovetail block.

[0016] Compared with the prior art, this utility model provides a dynamic balancing test fixture for silicon nitride ceramic bearings, which has the following advantages:

[0017] 1. This silicon nitride ceramic bearing dynamic balancing test fixture, by setting up a drive component and synchronous pulleys of different diameters, can easily adjust the transmission ratio to meet different speed requirements, making it convenient for staff to repair non-standard silicon nitride ceramic bearings after dynamic balancing testing.

[0018] 2. This silicon nitride ceramic bearing dynamic balancing test fixture, by setting an adjustment component, uses the first electric telescopic rod to drive the limit frame to move, which can adjust the height of the laser vibrometer and move the laser vibrometer laterally to place it above the silicon nitride ceramic bearing to be tested, thereby improving the detection accuracy;

[0019] 3. This silicon nitride ceramic bearing dynamic balancing test fixture, by setting a moving part, allows the second electric telescopic rod to drive the positioning frame to move laterally, so that its inner wall contacts the air shaft, which can limit the air shaft and thus improve its rotational stability.

[0020] The parts not covered in this device are the same as or can be implemented using existing technologies. This utility model can achieve rapid positioning of multiple silicon nitride ceramic bearings by using an air shaft. Then, under the drive of the drive component, the multiple silicon nitride ceramic bearings are rotated. Furthermore, the position of multiple laser vibration meters can be adjusted by the adjustment component, enabling one-to-one monitoring, thereby improving the quality and efficiency of dynamic balance testing of silicon nitride ceramic bearings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a dynamic balancing test fixture for silicon nitride ceramic bearings proposed in this utility model;

[0022] Figure 2 This is a structural cross-sectional view of the frame and drive components of a silicon nitride ceramic bearing dynamic balancing test fixture proposed in this utility model.

[0023] Figure 3 This is a rear view of the positioning frame and adjusting components of a silicon nitride ceramic bearing dynamic balancing test fixture proposed in this utility model.

[0024] Figure 4 This utility model provides a cross-sectional view of the limiting frame, torsion block, and laser vibration meter of a silicon nitride ceramic bearing dynamic balancing test fixture.

[0025] Figure 5 This is a schematic diagram of the positioning frame and moving parts of a dynamic balancing test fixture for silicon nitride ceramic bearings proposed in this utility model.

[0026] In the diagram: 1. Frame; 2. Positioning frame; 3. Drive component; 301. Synchronous pulley; 302. Motor; 303. Positioning ring; 4. Air shaft; 5. Laser vibration meter; 6. Adjusting component; 601. First electric telescopic rod; 602. Limiting frame; 603. Slide rod; 604. Sliding sleeve; 605. Lead screw; 606. Torsion block; 607. Limiting plate; 608. Limiting rod; 7. Positioning frame; 8. Moving component; 801. Fixed plate; 802. Second electric telescopic rod; 803. Positioning ring; 9. Positioning seat; 10. Ball bearing; 11. Dovetail block; 12. Dovetail groove. Detailed Implementation

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

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0029] Example:

[0030] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A dynamic balancing test fixture for silicon nitride ceramic bearings includes a frame 1 and a positioning frame 2 detachably mounted on the frame 1. It also includes: an air shaft 4, one end of which passes through the positioning frame 2 and is fixedly connected to a bearing, with the outer ring of the bearing fixedly connected to the positioning frame 2; a driving component 3 for driving the air shaft 4 to rotate; at least two sets of laser vibration meters 5, each mounted on the upper end of the air shaft 4, with an adjusting component 6 on each laser vibration meter 5; and a positioning frame 7 slidably connected to the frame 1, with a forming groove for positioning the air shaft 4, and a moving component 8 on the positioning frame 7.

[0031] Specifically, by using the air shaft 4, multiple silicon nitride ceramic bearings can be quickly positioned. Then, driven by the drive component 3, the multiple silicon nitride ceramic bearings are rotated. Furthermore, by using the adjustment component 6 to adjust the position of multiple laser vibration meters 5, one-to-one monitoring can be achieved, thereby improving the quality and efficiency of dynamic balance testing of silicon nitride ceramic bearings.

[0032] The driving component 3 includes a motor 302, which is fixedly mounted on the frame 1. The surface of the air shaft 4 and the output end of the motor 302 are both fixedly fitted with synchronous pulleys 301, and the two synchronous pulleys 301 are of different sizes. The two synchronous pulleys 301 are connected by a synchronous belt drive.

[0033] Specifically, by setting up the drive component 3 and the synchronous pulleys 301 of different diameters, the transmission ratio can be easily adjusted to meet different speed requirements. This makes it convenient for staff to repair non-standard silicon nitride ceramic bearings after dynamic balance testing.

[0034] A positioning ring 303 is fixedly sleeved on the surface of the motor 302, and the side of the positioning ring 303 near the frame 1 is fixedly connected to the frame 1.

[0035] Specifically, by setting the positioning ring 303, the motor 302 can be fixed, preventing the motor 302 from falling off or shifting during use.

[0036] The adjusting component 6 includes two first electric telescopic rods 601 fixedly installed on the positioning frame 2. The telescopic ends of the first electric telescopic rods 601 are fixedly connected to the limiting frame 602. The limiting frame 602 is slidably connected inside the positioning frame 2. The inner cavity of the limiting frame 602 is fixedly connected to a slide rod 603. Six sliding sleeves 604 are slidably connected to the slide rod 603. The laser vibration meter 5 is fixedly connected to the sliding sleeves 604.

[0037] Specifically, by setting the adjustment component 6, the first electric telescopic rod 601 drives the limit frame 602 to move, which can adjust the height of the laser vibration meter 5 and move the laser vibration meter 5 laterally so that it is placed above the silicon nitride ceramic bearing to be tested, thereby improving the detection accuracy.

[0038] A lead screw 605 is fixedly connected to one side of the sliding sleeve 604, and a torsion block 606 that abuts against the limit frame 602 is threaded onto the surface of the lead screw 605.

[0039] Specifically, by setting the lead screw 605 and the torsion block 606 to cooperate, the positions of the sliding sleeve 604 and the laser vibration meter 5 can be fixed, which helps to improve the stability of the laser vibration meter 5.

[0040] Two limiting rods 608 are fixedly connected to the positioning frame 2, and a limiting plate 607 that is fixedly connected to the limiting frame 602 is slidably connected to the limiting rods 608.

[0041] Specifically, by setting a limit rod 608 and a limit plate 607 to cooperate, when the positioning frame 2 drives the limit plate 607 to move vertically, the limit rod 608 can vertically limit the limit plate 607, thereby improving the stability of the vertical movement of the positioning frame 2.

[0042] The movable component 8 includes a fixed plate 801 fixedly installed on the frame 1. A second electric telescopic rod 802 is fixedly installed on one side of the fixed plate 801. The telescopic end of the second electric telescopic rod 802 is fixedly connected to the positioning frame 7.

[0043] Specifically, by setting the moving part 8, the second electric telescopic rod 802 drives the positioning frame 7 to move laterally, so that its inner wall contacts the air shaft 4, which can limit the air shaft 4 and thus improve its rotational stability.

[0044] The surface of the second electric telescopic rod 802 is fixedly fitted with a positioning ring 803, and the side of the positioning ring 803 near the fixing plate 801 is fixedly connected to the fixing plate 801.

[0045] Specifically, by setting the positioning ring 803, the second electric telescopic rod 802 can be positioned to prevent it from falling off during use.

[0046] Positioning seats 9 are arranged equidistantly in a circle inside the forming groove. There are several positioning seats 9, and the ends of the positioning seats 9 are rotatably connected to ball bearings 10.

[0047] Specifically, by setting the positioning seat 9 and the ball bearing 10 to cooperate, the air shaft 4 will contact the ball bearing 10 after being inserted into the inner cavity of the molding groove. The ball bearing 10 can improve the stability of its rotation adjustment.

[0048] The bottom of the positioning frame 7 is fixedly connected to a dovetail block 11, and the frame 1 is provided with a dovetail groove 12 that cooperates with the dovetail block 11. The dovetail block 11 slides in the inner cavity of the dovetail groove 12.

[0049] Specifically, by setting the dovetail block 11 and the dovetail groove 12 to cooperate, the positioning frame 7 can be laterally limited, preventing the positioning frame 7 from shifting when the second electric telescopic rod 802 moves the positioning frame 7, thereby improving the stability of the positioning frame 7 in use.

[0050] Working Principle: During use, the operator places the silicon nitride ceramic bearings one by one onto the surface of the air shaft 4. Then, an external air pump inflates the air shaft 4 at its inlet. Once inflated, the air shaft 4 can simultaneously position multiple silicon nitride ceramic bearings. After positioning, the operator uses an external control switch to activate the second electric telescopic rod 802. The telescopic end of the second electric telescopic rod 802 moves the positioning frame 7 laterally, allowing it to fit onto the surface of the air shaft 4. The internal ball bearings 10 limit the movement of the air shaft 4. Then, the sliding sleeve 604 on the surface of the sliding rod 603 moves laterally. As the sliding sleeve 604 slides, it drives the laser vibration meter 5 to slide. By adjusting the spacing or position of the laser vibration meters 5, multiple laser vibration meters 5 are symmetrically distributed on the upper end of the silicon nitride ceramic bearings. After the laser vibration meters 5 are adjusted, the operator rotates the torque screw on the surface of the lead screw 605. Block 606 can fix the sliding sleeve 604 and the laser vibration meter 5. After the laser vibration meter 5 is fixed, the staff can use an external control switch to start the first electric telescopic rod 601. The telescopic end of the first electric telescopic rod 601 drives the limit frame 602 and the laser vibration meter 5 to move downward to the designated position. Then, the motor 302 is started. The output end of the motor 302 drives the large synchronous pulley 301 to rotate. When the large synchronous pulley 301 rotates, it drives the synchronous belt to drive the transmission. When the synchronous belt drives the transmission, it drives the small synchronous pulley 301 to rotate. When the small synchronous pulley 301 rotates, it drives the air shaft 4 to rotate. This allows for the rotation adjustment of multiple silicon nitride ceramic bearings. During the rotation, the laser vibration meter 5 can monitor the vibration changes of the silicon nitride ceramic bearings in real time, and promptly detect dynamic balance problems, thereby improving the detection accuracy and efficiency of silicon nitride ceramic bearings.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dynamic balancing test fixture for silicon nitride ceramic bearings, comprising a frame (1) and a positioning frame (2) detachably mounted on the frame (1), characterized in that, Also includes: Rotate the air shaft (4) mounted on the frame (1), The air shaft (4) is provided with a drive component (3) for driving the air shaft (4) to rotate; At least two sets of laser vibration meters (5) are provided, wherein the laser vibration meters (5) are mounted on the upper end of the air shaft (4). The laser vibration meter (5) is equipped with an adjustment component (6); A positioning frame (7) is slidably connected to the frame (1). A forming groove is provided on the positioning frame (7) for positioning the air shaft (4). A moving part (8) is provided on the positioning frame (7).

2. The silicon nitride ceramic bearing dynamic balancing test fixture according to claim 1, characterized in that, The driving component (3) includes a motor (302) fixedly connected to the frame (1). Both the air shaft (4) and the motor (302) are fixedly fitted with synchronous pulleys (301), and the two synchronous pulleys (301) are connected by a synchronous belt drive.

3. The silicon nitride ceramic bearing dynamic balancing test fixture according to claim 2, characterized in that, A positioning ring (303) is fixedly sleeved on the motor (302), and the positioning ring (303) is fixedly connected to the frame (1).

4. The silicon nitride ceramic bearing dynamic balancing test fixture according to claim 1, characterized in that, The adjusting component (6) includes a first electric telescopic rod (601) fixedly installed on the positioning frame (2). The telescopic end of the first electric telescopic rod (601) is fixedly connected to a limiting frame (602). The limiting frame (602) is slidably connected inside the positioning frame (2). A slide rod (603) is fixedly connected to the inner cavity of the limiting frame (602). A sliding sleeve (604) is slidably connected to the slide rod (603). The laser vibration meter (5) is fixedly connected to the sliding sleeve (604).

5. The silicon nitride ceramic bearing dynamic balancing test fixture according to claim 4, characterized in that, A lead screw (605) is fixedly connected to the sliding sleeve (604), and a torsion block (606) that abuts against the limiting frame (602) is threaded onto the lead screw (605).

6. The silicon nitride ceramic bearing dynamic balancing test fixture according to claim 1, characterized in that, A limiting rod (608) is fixedly connected to the positioning frame (2), and a limiting plate (607) that is fixedly connected to the limiting frame (602) is slidably connected to the limiting rod (608).

7. The silicon nitride ceramic bearing dynamic balancing test fixture according to claim 1, characterized in that, The movable component (8) includes a fixed plate (801) fixedly installed on the frame (1), and a second electric telescopic rod (802) is fixedly installed on the fixed plate (801). The telescopic end of the second electric telescopic rod (802) is fixedly connected to the positioning frame (7).

8. The silicon nitride ceramic bearing dynamic balancing test fixture according to claim 7, characterized in that, A positioning ring (803) is fixedly sleeved on the second electric telescopic rod (802), and the positioning ring (803) is fixedly connected to the fixing plate (801).

9. The silicon nitride ceramic bearing dynamic balancing test fixture according to claim 1, characterized in that, Positioning seats (9) are arranged equidistantly in a circular pattern in the forming groove, and ball bearings (10) are provided at the ends of the positioning seats (9).

10. The dynamic balancing test fixture for silicon nitride ceramic bearings according to claim 1, characterized in that, A dovetail block (11) is fixedly connected to the positioning frame (7), and a dovetail groove (12) is provided on the frame (1) to cooperate with the dovetail block (11).

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