Assembling method for inner assembly of tapered roller bearing

Abstract

The invention discloses an assembling method for an inner component of a tapered roller bearing, which adopts an assembling tool and comprises the following steps of: downwards placing the small end of a retainer on a through hole table, and clamping and fixing the retainer through four clamping plate frames; a plurality of guide grooves in the roller guide disc are adjusted to be aligned with a plurality of pockets in the retainer one by one, and the height of the roller guide disc is adjusted to the middle position of the retainer; the tapered rollers are inserted into a plurality of guide grooves of a guide disc; the bearing inner ring is firstly inserted into the inner sides of the tapered rollers and pressed downwards until the small end face of the bearing inner ring reaches the top face of the roller guide disc, and after the raceway face of the bearing inner ring is basically attached to the inner side faces of the tapered rollers, the retainer is separated from clamping of the four clamping plates and then is slightly pulled upwards with force, and the bearing inner ring is pressed downwards until the small end face of the bearing inner ring reaches the top face of the roller guide disc. And the tapered rollers completely enter the pockets of the retainer in a one-to-one correspondence manner, and the bearing inner ring is completely buckled with the retainer. The problems that the tapered roller is unstable and the assembly efficiency is low are solved.

Description

Technical Field

[0001] The invention relates to an assembling method for inner components of a tapered roller bearing. Background Art

[0002] During the independent R&D and design stage of tapered roller bearings, small batches of samples often need to be assembled manually. Tapered roller bearings are composed of an outer ring and an inner component. The inner component is a combination of tapered rollers, cages, and inner rings. For small and medium-sized tapered roller bearings, the tapered rollers are often small in shape and large in number, which is an unstable risk item for manual assembly of the inner components.

[0003] The assembly process of the inner component is generally divided into two steps. The first step is to place the tapered roller in the pocket of the cage, and the second step is to place the inner ring into the inner cavity of the cage. In the previous assembly process of the inner component, the tapered rollers were placed in the pockets of the cage one by one. Since the small end diameter of the tapered roller was reamed small, it was unstable in the pocket. When installing the tapered roller, the tapered roller in front often slipped out of the pocket just after the rear tapered roller was placed in the pocket, making the assembly efficiency of the inner component low. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide an assembly method for tapered roller bearing inner components, which can solve the problems of tapered roller instability and low assembly efficiency during the assembly of small and medium-sized tapered roller bearing inner components.

[0005] The object of the present invention is achieved as follows: an assembly method for an inner component of a tapered roller bearing is based on an assembly tool for the inner component of a tapered roller bearing, the assembly tool comprising a workbench, a support frame and a roller guide plate; wherein,

[0006] The workbench comprises four legs, a workbench plate fixed on the top of the four legs, and a support plate fixed in the middle of the four legs and parallel to the workbench plate; a through hole is provided in the center of the workbench plate;

[0007] The support frame includes a bottom tray, a retractable support column, a through-hole table and four clamping plates; the bottom tray is fixed to the center of the top surface of the support plate of the workbench; the retractable support column is fixed to the center of the top surface of the bottom tray; the through-hole table is fixed to the top of the retractable support column, the diameter of the through-hole table is adapted to the diameter of the through-hole on the workbench plate, so that the through-hole table is inserted into the through-hole of the workbench plate, a screw rod is fixed to the center of the top surface of the through-hole table, and four cross-shaped guide grooves are provided on the periphery of the screw rod and lead to the outer diameter surface of the through-hole table; the four clamping plates are each installed in the four guide grooves in a one-to-one correspondence through a slider, and the inner surface of each clamping plate is an inverted conical arc surface adapted to the outer surface of the retaining frame;

[0008] The height of the roller guide plate is smaller than that of the cage, and the diameter of the roller guide plate is adapted to the inner diameter of the small end ring of the cage. A threaded blind hole is provided in the center of the bottom surface of the roller guide plate, so that the roller guide plate is installed on the screw of the support frame; a plurality of guide grooves corresponding to the plurality of pockets on the cage are evenly distributed on the outer circumference of the roller guide plate, and the plane of each guide groove is in the shape of an arc with a radius adapted to the radius of the large end of the tapered roller;

[0009] The assembly method for the inner component of a tapered roller bearing of the present invention comprises the following steps:

[0010] S1. Adjust the retractable support column in the support frame so that the top surface of the through-hole table is flush with the top surface of the workbench plate of the workbench;

[0011] S2. Adjust the positions of the four clamps according to the outer diameter of the small end of the cage, that is, move the slider at the bottom of the clamp in the corresponding guide groove;

[0012] S3. Place the small end of the cage downward on the top surface of the through-hole platform, and place four clamping plates against the outer surface of the cage to clamp and fix the cage;

[0013] S4, connect the roller guide plate to the screw on the through-hole platform, and adjust the multiple guide grooves on the roller guide plate to align with the multiple pockets on the cage one by one through the screw according to the height of the cage, and adjust the height of the roller guide plate to the middle position of the cage;

[0014] S5, inserting the plurality of tapered rollers into the plurality of guide grooves of the guide plate one by one from top to bottom, so that the plurality of tapered rollers enter the plurality of pockets of the cage one by one;

[0015] S6. First, insert the small end of the bearing inner ring downward into the inner side of the multiple tapered rollers and press downward until the small end face of the bearing inner ring reaches the top surface of the roller guide plate, so that the raceway surface of the bearing inner ring is basically in contact with the inner side surface of the tapered roller. Then, move the sliders at the bottom of the four clamping plates radially outward to release the retaining frame from the clamping of the four clamping plates. Then, gently pull the retaining frame upward to make the multiple tapered rollers fully enter the multiple pockets of the retaining frame one by one, and make the bearing inner ring and the retaining frame fully engage with each other. At this point, the assembly of the bearing internal components is completed.

[0016] In the above-mentioned assembly method for the inner component of a tapered roller bearing, the cross section of the guide slot is in an inverted T shape, and the cross section of the slider is also in an inverted T shape that matches the guide slot.

[0017] The assembly method for the inner component of a tapered roller bearing of the present invention is characterized by:

[0018] 1. The present invention uses the guide groove of the roller guide plate to guide the tapered roller into the pocket of the cage, which is convenient for the installation of the tapered roller and will not cause the tapered roller to slip, fall over, bump, etc., thus avoiding damage to the outer surface of the tapered roller during the assembly process;

[0019] 2. The present invention adopts a screw to connect the roller guide plate, which can adjust the position of the roller guide plate in the inner cavity of the cage, so that the tapered roller has more supporting space during the assembly process, making the tapered roller assembly process more stable;

[0020] 3. The cross-shaped guide groove on the top surface of the through-hole platform used in the present invention allows the clamping plate to move freely in the guide groove, and can be adapted to the assembly of internal components of different size segments, covering the inner diameter range of the bearing from 10mm to 120mm;

[0021] 4. The support frame used in the present invention is made of plastic material, which is light in weight and easy to process. The entire assembly tooling occupies a small area, is easy to operate, and is convenient to carry, which is suitable for manual assembly of small batch products;

[0022] 5. The present invention adopts assembly tooling suitable for manual assembly of small batch products, and can also be connected with a motor drive device, a gear transmission device, a clamping robot, etc., and put into production batch assembly application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of an assembly tool for an inner component of a tapered roller bearing used in the present invention;

[0024] Figure 2 It is a front view of an assembly tool for the inner components of a tapered roller bearing used in the present invention;

[0025] Figure 3 It is a front view of the roller guide disc in the assembly tool used in the present invention after being installed on the support frame;

[0026] Figure 4 It is a top view of the roller guide disc in the assembly tool used in the present invention after being installed on the support frame;

[0027] Figure 5 It is a perspective view of a clamping plate fixed on a slide block in an assembly tool used in the present invention;

[0028] Figure 6 is a top view of the assembly method of the present invention when performing step S3;

[0029] Figure 7 It is a perspective view of the assembly method of the present invention when performing steps S5 and S6. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] See also Figures 1 to 5 The assembly method for the inner components of a tapered roller bearing of the present invention is based on an assembly tool for the inner components of a tapered roller bearing, which includes a workbench 1, a support frame 2, four clamping plates 3 and a roller guide plate 4.

[0032] The workbench 1 includes four legs 11, a workbench plate 10 fixed on the top of the four legs 11, and a support plate 12 fixed in the middle of the four legs 11 and parallel to the workbench plate 10; a through hole is opened in the center of the workbench plate 10, and the diameter of the through hole is 120 cm.

[0033] The support frame 2 is installed on the support plate 12 of the workbench 1, and the support frame 2 includes a bottom tray 20, a retractable support column 21, a through-hole table 22 and four clamps 26; wherein, the bottom tray 20 is fixed at the center of the top surface of the support plate 12 of the workbench 1; the retractable support column 21 is fixed at the center of the top surface of the bottom tray 20; the through-hole table 22 is fixed at the top of the retractable support column 21, and the diameter of the through-hole table 22 is adapted to the diameter of the through-hole on the workbench plate 10, so that the through-hole table 22 is inserted into the through-hole of the workbench plate 10, and a screw rod 23 is fixed at the center of the top surface of the through-hole table 22, and four cross-shaped guide grooves 24 are opened on the periphery of the screw rod 23 and lead to the outer diameter surface of the through-hole table 22, and the cross section of the guide groove 24 is an inverted T shape.

[0034] Each of the four clamping plates 3 is installed in the four guide slots 24 in a one-to-one correspondence through a slider 30, and the cross section of the slider 30 is also an inverted T-shaped surface adapted to the guide slot 24; the inner surface of each clamping plate 3 is an inverted conical arc surface adapted to the outer surface of the retaining frame 51. The diameter range of the adjustment circle of the four clamping plates 3 is 10cm to 120cm, and is used to place the retaining frame 51 and clamp the retaining frame 51 to fix it.

[0035] The height of the roller guide plate 4 is smaller than that of the cage 51. The diameter of the roller guide plate 4 matches the inner diameter of the small end ring of the cage. A threaded blind hole is provided at the center of the bottom surface of the roller guide plate 4 so that the roller guide plate 3 is installed on the screw 23 of the support frame 2. The outer circumferential surface of the roller guide plate 4 is provided with a plurality of guide grooves 40 corresponding to the plurality of pockets on the cage 51 in a circumferentially uniform manner. The plane of each guide groove 40 is in an arc shape with a radius matching the radius of the large end of the tapered roller 52. The roller guide plate 4 can guide the tapered roller 52 into the pocket of the cage 51.

[0036] Please see again Figure 6 and Figure 7 The assembly method for the inner component of a tapered roller bearing of the present invention comprises the following steps:

[0037] S1, by adjusting the retractable support column 21 in the support frame 2, the top surface of the through-hole platform 22 is flush with the top surface of the workbench plate 10 of the workbench 1;

[0038] S2, adjusting the positions of the four clamping plates 3 according to the outer diameter of the small end of the retaining frame 51, that is, moving the slider 30 at the lower part of the clamping plate 3 in the corresponding guide slot 24;

[0039] S3, place the small end of the retainer 51 downward on the top surface of the through-hole platform 22, and place the four clamping plates 3 against the outer surface of the retainer 51 to clamp and fix the retainer 51 (see Figure 6 );

[0040] S4, connecting the roller guide plate 4 to the screw 23 on the through-hole stage 22, and adjusting the multiple guide grooves 40 on the roller guide plate 4 to align with the multiple pockets on the cage 51 one by one through the screw 23 according to the height of the cage 51, and adjusting the height of the roller guide plate 4 to the middle position of the cage 51;

[0041] S5, inserting the plurality of tapered rollers 52 into the plurality of guide grooves 40 of the guide plate 4 one by one from top to bottom, so that the plurality of tapered rollers 52 enter the plurality of pockets on the retaining frame 51 one by one;

[0042] S6. First, insert the small end of the bearing inner ring 53 downward into the inner side of the multiple tapered rollers 52 and press downward until the small end surface of the bearing inner ring 53 reaches the top surface of the roller guide plate 4, so that the raceway surface of the bearing inner ring 53 is basically in contact with the inner side surface of the tapered roller 52. Then, move the slider 30 at the bottom of the four clamping plates 3 radially outward to release the retaining frame 51 from the clamping of the four clamping plates 3. Then, gently pull the retaining frame 51 upward with force, so that the multiple tapered rollers 52 are completely inserted into the multiple pockets of the retaining frame 51 one by one, and the bearing inner ring 53 is completely engaged with the retaining frame 51. At this point, the assembly of the bearing internal components is completed.

[0043] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those skilled in the relevant technical field may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. An assembly method for an inner component of a tapered roller bearing, based on an assembly tool for the inner component of a tapered roller bearing, the assembly tool comprising a workbench, a support frame and a roller guide plate; wherein: The workbench comprises four legs, a workbench plate fixed on the top of the four legs, and a support plate fixed in the middle of the four legs and parallel to the workbench plate; a through hole is provided in the center of the workbench plate; The support frame includes a bottom tray, a retractable support column, a through-hole table and four clamping plates; the bottom tray is fixed to the center of the top surface of the support plate of the workbench; the retractable support column is fixed to the center of the top surface of the bottom tray; the through-hole table is fixed to the top of the retractable support column, the diameter of the through-hole table is adapted to the diameter of the through-hole on the workbench plate, so that the through-hole table is inserted into the through-hole of the workbench plate, a screw rod is fixed to the center of the top surface of the through-hole table, and four cross-shaped guide grooves are provided on the periphery of the screw rod and lead to the outer diameter surface of the through-hole table; the four clamping plates are each installed in the four guide grooves in a one-to-one correspondence through a slider, and the inner surface of each clamping plate is an inverted conical arc surface adapted to the outer surface of the retaining frame; The height of the roller guide plate is smaller than that of the cage, and the diameter of the roller guide plate is adapted to the inner diameter of the small end ring of the cage. A threaded blind hole is provided in the center of the bottom surface of the roller guide plate, so that the roller guide plate is installed on the screw of the support frame; a plurality of guide grooves corresponding to the plurality of pockets on the cage are evenly distributed on the outer circumference of the roller guide plate, and the plane of each guide groove is in the shape of an arc with a radius adapted to the radius of the large end of the tapered roller; Characterized in that the assembly method comprises the following steps: S1. Adjust the retractable support column in the support frame so that the top surface of the through-hole table is flush with the top surface of the workbench plate of the workbench; S2. Adjust the positions of the four clamps according to the outer diameter of the small end of the cage, that is, move the slider at the bottom of the clamp in the corresponding guide groove; S3. Place the small end of the cage downward on the top surface of the through-hole platform, and place four clamping plates against the outer surface of the cage to clamp and fix the cage; S4, connect the roller guide plate to the screw on the through-hole platform, and adjust the multiple guide grooves on the roller guide plate to align with the multiple pockets on the cage one by one through the screw according to the height of the cage, and adjust the height of the roller guide plate to the middle position of the cage; S5, inserting the plurality of tapered rollers into the plurality of guide grooves of the guide plate one by one from top to bottom, so that the plurality of tapered rollers enter the plurality of pockets of the cage one by one; S6. First, insert the small end of the bearing inner ring downward into the inner side of the multiple tapered rollers and press downward until the small end face of the bearing inner ring reaches the top surface of the roller guide plate, so that the raceway surface of the bearing inner ring is basically in contact with the inner side surface of the tapered roller. Then, move the sliders at the bottom of the four clamping plates radially outward to release the retaining frame from the clamping of the four clamping plates. Then, gently pull the retaining frame upward to make the multiple tapered rollers fully enter the multiple pockets of the retaining frame one by one, and make the bearing inner ring and the retaining frame fully engage with each other. At this point, the assembly of the bearing internal components is completed.

2. The method for assembling inner components of a tapered roller bearing according to claim 1, characterized in that: The cross section of the guide slot is in an inverted T shape, and the cross section of the sliding block is also in an inverted T shape that matches the guide slot.

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