Bearing cylindrical roller assembling device based on integral retainer

Abstract

The utility model discloses a bearing cylindrical roller assembling device based on an integral retainer. The bearing cylindrical roller assembling device comprises a positioning base and a press fitting mechanism. A concave-arc-shaped outer circle positioning face with the curvature radius matched with the outer circle radius of a bearing outer ring is arranged in the middle of the top face of the positioning base, a baffle is arranged at the position, at the rear end of the outer circle positioning face, of the positioning base, the top of the baffle extends forwards to form a boss, and the bottom face of the boss is an arc face concentric with the outer circle positioning face. The bottom face of the boss, the front end face of the baffle and the outer circle positioning face form a clamping groove of the bearing outer ring. The press-fitting mechanism comprises a guide rail base fixed to the middle of the rear end face of the positioning base, a workbench installed on the guide rail base through a sliding block and connected with a workbench driving air cylinder installed on the rear portion of the guide rail base, a pressing rod with the middle hinged to the fixed support and the rear portion hinged to a pressing rod driving air cylinder through a movable hinged shaft, and a front end pressing block hinged to the pressing rod. According to the utility model, the bearing roller and the retainer can be simply, conveniently and quickly assembled, and the assembling quality is effectively ensured.

Description

Technical Field

[0001] This utility model relates to an assembly device for cylindrical roller bearings based on an integral cage. Background Technology

[0002] Cylindrical roller bearings are a common type of bearing, known for their high load capacity. A cylindrical roller bearing consists of an inner ring, an outer ring, rollers, and a cage. During assembly, the cage and outer ring are typically positioned first, and then the rollers are pressed into the cage pockets one by one. Finally, they are fitted to the inner ring for use.

[0003] Cylindrical roller bearings typically use brass or plastic-coated steel cages. The main assembly process involves combining the bearing rollers with the cage. There are generally two assembly methods: separate riveted and welded assembly and integral cage with locking lugs. The separate assembly involves placing the roller into one half of the cage, then closing the other half, with the two halves welded together using anchor bolts. The integral assembly refers to a single, integrated cage. To prevent the rollers from falling out, the cage has locking lugs in its pockets, requiring external force to press the rollers into the cage pockets. Separate assemblies are generally used for small cylindrical roller bearings. Larger cylindrical roller bearings more often use integral cage assemblies. However, the larger the bearing, the more difficult the roller installation becomes. The rollers need to be pressed into the cage's locking lugs with considerable force, making bearing assembly very cumbersome. Furthermore, the inability to control the pressing force leads to many quality problems such as impacts. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the prior art and provide an assembly device for cylindrical roller bearings based on an integral cage. This device can easily and quickly assemble bearing rollers and cages, ensuring the assembly quality of cylindrical roller bearings.

[0005] The purpose of this utility model is achieved as follows: an assembly device for cylindrical roller bearings based on an integral cage, comprising a positioning base and a pressing mechanism; wherein,

[0006] The positioning base has a rectangular shape with a length greater than the height of the bearing outer ring and a width greater than the length. The top surface of the positioning base has a concave arc-shaped outer circular positioning surface with a radius of curvature that matches the outer circle radius of the bearing outer ring. The generatrix of the lowest position of the outer circular positioning surface overlaps with the center line of the positioning base in the length direction. The width of the outer circular positioning surface matches the height of the bearing outer ring, so that the positioning base has a baffle at the rear end of the outer circular positioning surface. The top of the baffle extends forward to form a slightly arched boss. The bottom surface of the boss is an arc surface concentric with the outer circular positioning surface, and the radius of curvature of the bottom surface of the boss matches the inner circle radius of the bearing outer ring, so that the bottom surface of the boss, the front surface of the baffle, and the outer circular positioning surface form a groove for the bearing outer ring.

[0007] The pressing mechanism includes a guide rail seat, a worktable, a pressing rod, and a pressing block;

[0008] The guide rail is vertically fixed to the middle of the rear end face of the positioning base, and the axis of the guide rail is located on the extension line of the center line of the positioning base in the length direction.

[0009] A slider is installed at the bottom of the worktable, allowing the worktable to be mounted on the guide rail seat via the slider; the rear end of the worktable is connected to the end of the piston rod of the worktable drive cylinder, which is horizontally mounted on the rear top surface of the guide rail seat; a fixed support is installed at the middle of the front top surface of the worktable, and a pressure rod drive cylinder is vertically mounted at the middle of the rear top surface of the worktable.

[0010] A slot is formed on the bottom surface of the middle part of the pressure rod, and a pressure rod groove is formed horizontally on the bottom surface of the rear part of the pressure rod. A hinge shaft groove communicating with the pressure rod groove is formed on the side of the pressure rod. The middle part of the pressure rod is hinged to the fixed support through a fixed hinge shaft, and the rear part of the pressure rod is hinged to the end of the piston rod of the pressure rod drive cylinder inserted in the pressure rod groove through a movable hinge shaft inserted in the hinge shaft groove.

[0011] The pressure block is hinged to the front end of the pressure rod, and the bottom surface of the pressure block is a concave arc surface that matches the outer surface of the bearing roller.

[0012] The aforementioned assembly device for bearing cylindrical rollers based on an integral cage includes a press-fit mechanism that further comprises a worktable limiting block installed on the lower part of the front end face of the worktable and a pressure rod limiting block installed on the upper part of the front end face of the worktable.

[0013] The present invention relates to an assembly device for cylindrical roller bearings based on an integral cage. The device assembles the bearing rollers with the integral cage by positioning the bearing's double end faces using the outer circular positioning surface on the positioning base and the slot positioning surface, and by applying external force through the lever principle. The device is simple to manufacture; its processing and connection can be completed through simple machining, ensuring the quality of bearing installation. Attached Figure Description

[0014] Figure 1 This is an axial cross-sectional view of the assembly device for cylindrical roller bearings based on an integral cage according to this utility model.

[0015] Figure 2 This is a front view of the positioning base in the assembly device of this utility model;

[0016] Figure 3 yes Figure 2 The PP view in the middle. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Please see Figures 1 to 3 The present invention relates to an assembly device for cylindrical roller bearings based on an integral cage, comprising a positioning base 2 and a pressing mechanism.

[0019] The positioning base 2 has a rectangular plane. The length of the plane of the positioning base 2 is greater than the height of the bearing outer ring 11, and the width is greater than the length of the rectangle. The top surface of the positioning base 2 has a concave arc-shaped outer circular positioning surface 2A with a radius of curvature that matches the radius of the outer circular surface of the bearing outer ring 11. The generatrix of the lowest position of the outer circular positioning surface 2A overlaps with the center line of the length direction of the positioning base 2. The width of the outer circular positioning surface 2A matches the height of the bearing outer ring 11, so that the positioning base 2 has a baffle 20 at the right end of the outer circular positioning surface 2A. The top of the baffle 20 extends forward to form a slightly arched boss 2B. The bottom surface of the boss 2B is a concave arc surface concentric with the outer circular positioning surface 2A. The radius of curvature of the bottom surface of the boss 2B matches the radius of the inner circular surface of the bearing outer ring 11, so that the bottom surface of the boss 2B, the front end surface of the baffle 20, and the outer circular positioning surface 2A constitute the groove 10 of the bearing outer ring 11.

[0020] The pressing mechanism includes a guide rail seat 3, a worktable 4, a pressing rod 5, a pressing block 6, a worktable limiting block 7, and a pressing rod limiting block 8; among which,

[0021] The guide rail seat 3 is vertically fixed to the middle of the rear end face of the positioning base 2, and the axis of the guide rail seat 3 is located on the extension line of the center line of the length direction of the positioning base 2; a worktable drive cylinder 3A is horizontally installed in the middle of the rear top surface of the guide rail seat 3.

[0022] A slider 40 is installed at the bottom of the worktable 4, so that the worktable 4 is mounted on the guide rail seat 3 via the slider 40; the rear end of the worktable 4 is connected to the end of the piston rod of the worktable drive cylinder 3A; a fixed support 4A is installed in the middle of the top surface of the front end of the worktable 4, and a pressure rod drive cylinder 4B is installed vertically in the middle of the top surface of the rear end of the worktable 4.

[0023] A slot is provided on the bottom surface of the middle part of the pressure rod 5, and a pressure rod groove is provided horizontally on the bottom surface of the rear part of the pressure rod 5. A hinge shaft groove 50 communicating with the pressure rod groove is provided on the side of the pressure rod 5. The middle part of the pressure rod 5 is hinged to the fixed support 4A through a fixed hinge shaft 5A, and the rear part of the pressure rod 5 is hinged to the end of the piston rod of the pressure rod drive cylinder 4B inserted in the pressure rod groove through a movable hinge shaft 5B inserted in the hinge shaft groove 50.

[0024] The pressure block 6 is hinged to the front end of the pressure rod 5, and the bottom surface of the pressure block 6 is a concave arc surface that matches the outer surface of the bearing roller 13.

[0025] The workbench limit block 7 is installed on the lower part of the front end face of the workbench 4;

[0026] The pressure bar limit block 8 is installed on the upper part of the front end face of the worktable 4.

[0027] The assembly of cylindrical rollers in bearings based on an integral cage according to this utility model includes the following steps:

[0028] Step 1: Place the outer ring 11 of the bearing upright on the outer circumferential positioning surface 2A of the positioning base 2, and push the outer ring 11 of the bearing backward until the rear end face of the outer ring 11 is close to the front end face of the baffle 20 of the positioning base 2, so that the outer ring 11 of the bearing is embedded in the slot 10 of the positioning base 2.

[0029] Step 2: Place the retainer 12 inside the outer ring 11 of the bearing, and press the rear end face of the retainer 12 against the front end face of the boss 2B of the positioning base 2 to ensure the relative position of the retainer 12 and the outer ring 11 of the bearing. At the same time, adjust one of the pockets of the retainer 12 to be at the bottom so that the axis of the pocket and the center line of the length direction of the positioning base 2 are on the same vertical plane.

[0030] Step 3: First, insert the roller 13 horizontally into the bottom pocket of the retainer 12. Then, start the piston rod of the worktable drive cylinder 3A to extend forward, so that the worktable 4 moves forward along the guide rail 3 via the slider 40 until the pressure block 6 is directly above the roller 13.

[0031] Step 4: Start the piston rod of the pressure rod drive cylinder 4B to extend, so that the pressure rod 5 moves forward along the pressure rod slide groove and rotates around the fixed hinge shaft 5A on the fixed support 4A, so that the pressure block 6 presses the roller 13 downward until the roller 13 is completely inserted into the pocket of the cage 12, thus completing the pressing of the first roller 12.

[0032] Step 5: Control the piston rod of the pressure rod drive cylinder 4B to retract, lift the pressure block 6, and at the same time move the pressure rod 5 backward along the pressure rod slide groove. Then rotate the outer ring 11 of the bearing to adjust the other pocket of the cage 12 to the lowest position. Repeat step 4 to press the second roller 13 until all rollers 13 are pressed.

[0033] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.

Claims

1. An assembly device for cylindrical roller bearings based on an integral cage, comprising a positioning base and a pressing mechanism; characterized in that, The positioning base has a rectangular shape with a length greater than the height of the bearing outer ring and a width greater than the length. The top surface of the positioning base has a concave arc-shaped outer circular positioning surface with a radius of curvature that matches the outer circle radius of the bearing outer ring. The generatrix of the lowest position of the outer circular positioning surface overlaps with the center line of the positioning base in the length direction. The width of the outer circular positioning surface matches the height of the bearing outer ring, so that the positioning base has a baffle at the rear end of the outer circular positioning surface. The top of the baffle extends forward to form a slightly arched boss. The bottom surface of the boss is an arc surface concentric with the outer circular positioning surface, and the radius of curvature of the bottom surface of the boss matches the inner circle radius of the bearing outer ring, so that the bottom surface of the boss, the front surface of the baffle, and the outer circular positioning surface form a groove for the bearing outer ring. The pressing mechanism includes a guide rail seat, a worktable, a pressing rod, and a pressing block; The guide rail is vertically fixed to the middle of the rear end face of the positioning base, and the axis of the guide rail is located on the extension line of the center line of the positioning base in the length direction. A slider is installed at the bottom of the worktable, allowing the worktable to be mounted on the guide rail seat via the slider; the rear end of the worktable is connected to the end of the piston rod of the worktable drive cylinder, which is horizontally mounted on the rear top surface of the guide rail seat; a fixed support is installed at the middle of the front top surface of the worktable, and a pressure rod drive cylinder is vertically mounted at the middle of the rear top surface of the worktable. A slot is formed on the bottom surface of the middle part of the pressure rod, and a pressure rod groove is formed horizontally on the bottom surface of the rear part of the pressure rod. A hinge shaft groove communicating with the pressure rod groove is formed on the side of the pressure rod. The middle part of the pressure rod is hinged to the fixed support through a fixed hinge shaft, and the rear part of the pressure rod is hinged to the end of the piston rod of the pressure rod drive cylinder inserted in the pressure rod groove through a movable hinge shaft inserted in the hinge shaft groove. The pressure block is hinged to the front end of the pressure rod, and the bottom surface of the pressure block is a concave arc surface that matches the outer surface of the bearing roller.

2. The assembly device for cylindrical roller bearings based on an integral cage according to claim 1, characterized in that, The pressing mechanism also includes a worktable limiting block installed on the lower part of the front end face of the worktable and a pressure rod limiting block installed on the upper part of the front end face of the worktable.

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