Bearing self-centering clamp

Abstract

The bearing self-centering clamp comprises a base, a plurality of fixing holes are formed in the upper end face of the base, a rotating shaft is rotationally installed on the upper end face of the base, a connecting plate is fixedly installed on the upper end face of the rotating shaft, and a gear ring is fixedly connected to the bottom wall of the connecting plate through a connecting mechanism. A first motor is fixedly installed on the upper end face of the base through a supporting mechanism. Through the arrangement of the first bevel gear, the screw rod, the second bevel gear and other components, when the second motor is started, the screw rod connected with the second motor is driven to rotate, the second bevel gear on the screw rod rotates along with the second motor, and the second bevel gears on other screw rods can synchronously rotate through meshing transmission with the first bevel gear; and then all the screws are driven to rotate synchronously, so that the multiple clamping blocks can be synchronously and uniformly close to or far away from the bearing, and compared with a traditional non-synchronous clamping mode, the centering precision of the bearing is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing fixture technical field especially, relates to a bearing self-centering fixture. BACKGROUND

[0002] Mechanical processing fixture refers to the device for fixing the processing object in the mechanical manufacturing process, making it occupy the correct position, so as to carry out construction or detection.

[0003] In the turning, grinding, assembly and other processing procedures of the bearing, the bearing clamp is an indispensable auxiliary equipment, which can accurately fix the bearing and keep it stable during processing. However, the bearing clamps on the market still have many problems to be solved. The traditional bearing clamps are manually adjusted and positioned, and the operation process depends on the experience of workers, which makes it difficult to accurately realize the coincidence of the bearing center and the rotation center of the machine tool spindle, resulting in the out-of-tolerance of the roundness and cylindricity of the processed bearing, which seriously affects the quality and performance of the bearing, and the practicality is insufficient. Therefore, a bearing self-centering fixture needs to be redesigned to solve the above problems. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art and provides a bearing self-centering fixture.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A bearing self-centering fixture, comprising a base, a plurality of fixing holes are formed in the upper end face of the base, a rotating shaft is rotatably installed on the upper end face of the base, a connecting plate is fixedly installed on the upper end face of the rotating shaft, a gear ring is fixedly connected to the connecting plate through a connecting mechanism, a first motor is fixedly installed on the upper end face of the base through a supporting mechanism, a spur gear connected with the gear ring is fixedly installed on the output shaft outer wall of the first motor, a first bevel gear is rotatably installed on the upper end face of the connecting plate, a plurality of screw rods are rotatably installed on the upper end face of the connecting plate through a connecting frame, a second motor connected with the same side screw rod is fixedly installed on the outer wall of one of the connecting frames, a moving block is threadedly installed on the outer wall of each screw rod through a limiting mechanism, a clamping block is fixedly connected to the outer wall of each moving block through a linking mechanism, and an antiskid pad is fixedly installed on the inner wall of each clamping block.

[0007] Preferably, the connecting mechanism comprises a plurality of connecting rods fixedly installed on the bottom wall of the connecting plate, and the end of each connecting rod is fixedly connected with the upper end face of the gear ring.

[0008] Preferably, the supporting mechanism comprises a supporting frame fixedly installed on the upper end face of the base, and the first motor is fixedly installed on the bottom wall of the supporting frame.

[0009] Preferably, the limiting mechanism comprises a limiting rod fixedly installed inside the connecting frame, and the limiting rod is slidably penetrated through the moving block.

[0010] Preferably, the connecting mechanism comprises a connecting rod fixedly installed on the outer wall of the moving block on both sides, and the ends of the two connecting rods are fixedly connected with the outer wall of the clamping block.

[0011] Preferably, a plurality of fixed rods are fixedly installed on the upper end face of the connecting plate, and a baffle is fixedly connected at the end of each fixed rod.

[0012] The utility model discloses beneficial effects:

[0013] 1. When the second motor is started, the first bevel gear, screw and second bevel gear are arranged, drive the screw connected with it to rotate, the second bevel gear on the screw rotates, through the meshing transmission with the first bevel gear, can make the second bevel gear on other screw synchronous rotation, and then drive all screw synchronous rotation, make multiple clamping blocks can be synchronized and uniformly close to or away from the bearing, compared with the traditional asynchronous clamping mode, the centering accuracy of bearing is greatly improved.

[0014] 2. When the first motor is started, the output shaft drives the spur gear to rotate, the spur gear is engaged with the gear ring, and the gear ring is rotated. Since the gear ring is fixedly connected with the connecting plate through the connecting rod, the connecting plate will rotate around the rotating shaft. This structure makes the clamp can drive the bearing to adjust the angle flexibly, without disassembling, installing and calibrating the bearing like traditional way, greatly saves time and energy. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model provides a bearing self-centering fixture structure schematic diagram;

[0016] Figure 2 The vertical section structure schematic diagram of Figure 1 ;

[0017] Figure 3 The side view cross section structure schematic diagram of the bearing self-centering fixture of the utility model;

[0018] Figure 4 The structure enlarged schematic diagram of A in Figure 2 ;

[0019] Figure 5 The structure enlarged schematic diagram of B in Figure 2 ;

[0020] Figure 6 The structure enlarged schematic diagram of C in Figure 3 ;

[0021] In the figure: 1 base, 2 rotating shaft, 3 connecting plate, 4 connecting rod, 5 gear ring, 6 support frame, 7 first motor, 8 straight gear, 9 first bevel gear, 10 connecting frame, 11 screw rod, 12 second bevel gear, 13 second motor, 14 limiting rod, 15 moving block, 16 connecting rod, 17 clamping block, 18 anti-skid pad, 19 fixed rod, 20 baffle. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] Reference Figures 1-6 A bearing self-centering clamp, including base 1, the upper end face of base 1 is provided with a plurality of fixed holes, the upper end face of base 1 is rotatably installed with rotating shaft 2, the upper end face of rotating shaft 2 is fixedly installed with connecting plate 3, the bottom wall of connecting plate 3 is fixedly connected with gear ring 5 through connecting mechanism, the upper end face of base 1 is fixedly installed with first motor 7 through support mechanism, the outer wall of the output shaft of first motor 7 is fixedly installed with straight gear 8 connected with gear ring 5, the upper end face of connecting plate 3 is rotatably installed with first bevel gear 9, the upper end face of connecting plate 3 is rotatably installed with a plurality of screw rods 11 through connecting frame 10, the outer wall of each screw rod 11 is fixedly installed with second bevel gear 12 engaged with first bevel gear 9, the outer wall of one connecting frame 10 is fixedly installed with second motor 13 connected with the same side screw rod 11, the outer wall of each screw rod 11 is threadedly installed with moving block 15 through limiting mechanism, the outer wall of each moving block 15 is fixedly connected with clamping block 17 through connecting mechanism, and the inner wall of each clamping block 17 is fixedly installed with anti-skid pad 18.

[0024] Connecting mechanism includes a plurality of connecting rods 4 fixedly installed on the bottom wall of connecting plate 3, and the end of each connecting rod 4 is fixedly connected with the upper end face of gear ring 5.

[0025] Further, the connecting rod 4 is made of high-strength solid steel material, which has sufficient strength to transmit the torque between the gear ring 5 and the connecting plate 3, and ensures the stability of power transmission, and the plurality of connecting rods 4 are evenly distributed along the circumferential direction of the gear ring 5, which can make the connecting plate 3 more balanced in stress, and avoid the problem of rotating eccentricity caused by uneven stress.

[0026] The support mechanism includes a support frame 6 fixedly installed on the upper end face of the base 1, and the first motor 7 is fixedly installed on the bottom wall of the support frame 6.

[0027] Further, the support frame 6 is designed in a frame structure, which is welded from high-strength metal profiles, and this structure can effectively disperse the vibration generated when the first motor 7 works, and reduce the influence of vibration on the entire clamp system.

[0028] The limiting mechanism comprises a limiting rod 14 fixedly installed inside the connecting frame 10, and the limiting rod 14 is slidably penetrated through the moving block 15.

[0029] Further, the surface of the limiting rod 14 is subjected to high-precision grinding treatment and has a low surface roughness, so that the friction between the limiting rod 14 and the moving block 15 can be reduced, and the moving block 15 can slide on the limiting rod 14 more smoothly.

[0030] The connecting mechanism comprises a connecting rod 16 fixedly installed on the outer wall of the moving block 15 on both sides, and the end of the two connecting rods 16 is fixedly connected with the outer wall of the clamping block 17.

[0031] Further, the material of the connecting rod 16 is selected to be a high-strength and ductile alloy material, which can not only ensure the transmission of the clamping force, but also can play a buffering role when subjected to a certain impact.

[0032] A plurality of fixed rods 19 are fixedly installed on the upper end face of the connecting plate 3, and the end of each fixed rod 19 is fixedly connected with a baffle 20.

[0033] Further, the fixed rods 19 are uniformly distributed on the upper end face of the connecting plate 3, and the height thereof is designed according to the height of the splashes that may be generated in the machining process, so as to ensure that the baffle 20 can effectively block the splashes and avoid affecting the meshing of the first bevel gear 9 and the second bevel gear 12.

[0034] When the utility model is used, the base 1 can be fixedly installed on the upper end face of the machining table through the cooperation of the fixing hole and the fixing bolt, and during the installation process, the fixing bolt should be tightened to avoid affecting the machining precision due to the loosening of the clamp during subsequent machining operation, and at the same time, the adhesion degree of the base 1 and the machining table should be ensured, and the level instrument and other tools can be used for detection and adjustment to make the clamp in a horizontal state, thereby providing a stable basis for subsequent accurate machining.

[0035] Next, the second motor 13 is started, when the second motor 13 starts to run, its output shaft drives the screw rod 11 connected with it to start rotating, because the screw rod 11 is fixedly connected with the second bevel gear 12, so the rotation of the screw rod 11 will drive the second bevel gear 12 to rotate synchronously, and the second bevel gear 12 is meshed with the first bevel gear 9, under the meshing transmission, the first bevel gear 9 also starts to rotate, because the first bevel gear 9 is also meshed with the second bevel gears 12 on the other screw rods 11, so it will drive the remaining screw rods 11 to rotate synchronously, with the rotation of the screw rod 11, the movement of the moving block 15 on the screw rod 11 needs to be paid special attention, because the limiting rod 14 slides through the moving block 15, plays a limiting role, so that the moving block 15 cannot rotate with the screw rod 11, but can only move smoothly along the axial direction of the screw rod 11, the synchronous movement of the plurality of moving blocks 15 drives the clamping blocks 17 connected with them to move synchronously towards the bearing, in this process, the movement of the clamping blocks 17 needs to be closely observed, to ensure that they move synchronously and uniformly towards the bearing, when the non-slip pad 18 starts to contact the bearing surface, continue to rotate the screw rod 11, so that the non-slip pad 18 is tightly attached to the bearing surface, until the precise self-centering and firm clamping are realized, at this time, the non-slip pad 18 not only increases the friction force with the bearing surface, prevents the bearing from sliding during the machining process, but also plays a certain buffering role, avoids damage to the bearing surface caused by excessive clamping force;

[0036] If the angle of the bearing needs to be adjusted during the machining process, the first motor 7 is started, the output shaft of the first motor 7 drives the spur gear 8 to start rotating, the spur gear 8 is meshed with the gear ring 5, the meshing transmission makes the gear ring 5 start to rotate, because the gear ring 5 is fixedly connected with the connecting plate 3 through the plurality of connecting rods 4, so the rotation of the gear ring 5 will drive the connecting plate 3 to rotate around the rotating shaft 2, during the rotating process, the rotating number and direction of the first motor 7 need to be accurately controlled according to the actual machining requirement, so as to adjust the bearing to the required machining angle, when the machining operation is completed, the machined bearing needs to be taken out of the clamp, the second motor 13 is started again and reverses, at this time, the screw rod 11 reverses to rotate, drives the moving block 15 to move reversely along the axial direction of the screw rod 11, and then makes the plurality of clamping blocks 17 move synchronously away from the bearing, after the clamping blocks 17 completely release the bearing, the machined bearing is carefully taken out, attention should be paid to avoid collision and scratching.

[0037] The above merely describes a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the technical field according to the technical solution and the application concept of the present application within the technical range disclosed by the present application can make equivalent replacement or change, which should be covered within the protection scope of the present application.

Claims

1. A bearing self-centering fixture comprising a base (1), characterized in that, The upper end face of the base (1) is provided with a plurality of fixing holes, the upper end face of the base (1) is rotatably installed with a rotating shaft (2), the upper end face of the rotating shaft (2) is fixedly installed with a connecting plate (3), the bottom wall of the connecting plate (3) is fixedly connected with a gear ring (5) through a connecting mechanism, the upper end face of the base (1) is fixedly installed with a first motor (7) through a supporting mechanism, the output shaft outer wall of the first motor (7) is fixedly installed with a spur gear (8) connected with the gear ring (5), the upper end face of the connecting plate (3) is rotatably installed with a first bevel gear (9), the upper end face of the connecting plate (3) is rotatably installed with a plurality of screw rods (11) through a connecting frame (10), the outer wall of each screw rod (11) is fixedly installed with a second bevel gear (12) engaged with the first bevel gear (9), the outer wall of one of the connecting frames (10) is fixedly installed with a second motor (13) connected with the same side screw rod (11), the outer wall of each screw rod (11) is threadedly installed with a moving block (15) through a limiting mechanism, the outer wall of each moving block (15) is fixedly connected with a clamping block (17) through a linking mechanism, and the inner wall of each clamping block (17) is fixedly installed with an anti-skid pad (18).

2. A bearing self-centering fixture according to claim 1, wherein The connecting mechanism comprises a plurality of connecting rods (4) fixedly installed on the bottom wall of the connecting plate (3), and the end of each connecting rod (4) is fixedly connected with the upper end face of the gear ring (5).

3. A bearing self-centering fixture according to claim 2, wherein The supporting mechanism comprises a supporting frame (6) fixedly installed on the upper end face of the base (1), and the first motor (7) is fixedly installed on the bottom wall of the supporting frame (6).

4. A bearing self-centering fixture according to claim 3, wherein The limiting mechanism comprises a limiting rod (14) fixedly installed in the connecting frame (10), and the limiting rod (14) slides through the moving block (15).

5. A bearing self-centering fixture according to claim 4, wherein The linking mechanism comprises a linking rod (16) fixedly installed on the outer wall of the moving block (15) on both sides, and the end of each linking rod (16) is fixedly connected with the outer wall of the clamping block (17).

6. A bearing self-centering fixture according to claim 5, wherein, The upper end face of the connecting plate (3) is fixedly installed with a plurality of fixed rods (19), and the end of each fixed rod (19) is fixedly connected with a baffle (20).

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