CN215880698U - High-precision double-row cylindrical roller bearing nondestructive assembly equipment - Google Patents

Abstract

The utility model provides a harmless rigging equipment of high accuracy double-row cylindrical roller bearing, it relates to an rigging equipment, concretely relates to harmless rigging equipment of high accuracy double-row cylindrical roller bearing. The utility model aims to solve the problems that the quality of a bearing is easily affected by scratching and bruising between rollers in the assembly process of the conventional high-precision bearing, the missing of assembly cannot be avoided by manual assembly, and the working strength is high. The utility model comprises a feeding device, a cam push-in roller mechanism, a bearing equal-division rotating device and a working platform lifting mechanism; the cam push-in roller mechanism is installed on the lifting mechanism of the working platform, the feeding device is installed on one side of the left end of the cam push-in roller mechanism, and the bearing equal division rotating device is installed at the left end of the cam push-in roller mechanism. The utility model belongs to the field of bearing manufacturing and processing.

Description

High-precision double-row cylindrical roller bearing nondestructive assembly equipment

Technical Field

The utility model relates to assembly equipment, in particular to high-precision double-row cylindrical roller bearing nondestructive assembly equipment, and belongs to the field of bearing manufacturing and processing.

Background

In recent years, the development of the domestic machine tool industry is rapidly advanced, and the machine tool industry is shortening the gap with the international brand from the realization of simple functions to the improvement of precision indexes. This is not only a result of the constant efforts of the technicians in the machine tool industry, but also a result of the constant raising of more targeted problem flagging by the practitioners in the machine tool use industry. The requirement on heavy load, high stability and high rigidity promotes the continuous progress of a shafting structure, and the NN3000KTN1 series bearing double-row cylindrical roller bearing has the advantages of large radial load bearing capacity, capability of improving the rigidity and stability of the shafting, and is increasingly applied to the structure of a machine tool spindle. The requirement of the machine tool spindle bearing on the precision is very strict, the mechanical precision of bearing parts reaches a high level, but the backward assembly technology causes the loss of the bearing precision and limits the generation of the bearing high precision. At present, the assembly mode of the NN3000KTN1 series bearing industry is manual assembly, in order to improve the assembly efficiency, the roller is directly poured on a workbench or is assembled by grabbing by hands, and therefore the phenomena of scratching, bruising and neglected assembly between the roller and the roller can be caused; because the material of the retainer is PA66, the roller needs to be loaded in from the radial outside of the retainer by force extrusion during assembly, the force applied by hands is not controllable, and the risk of crushing or scratching the roller path and the roller caused by excessive force exists. After filling the lower cage pocket, the whole bearing is taken up and turned over, the upper cage is made to be below, and the upper cage pocket is filled continuously. The bearing is not light after a retainer is assembled, and the process of picking up and turning increases great working strength.

In summary, the problems of assembling the NN3000KTN1 series bearing are as follows: 1. in the assembly process, the rollers are directly poured on the workbench or are grabbed by hands together, so that the quality of the bearing is easily influenced by scratching and bruising between the rollers; 2. the number of the cage pockets is divided into equal parts, so that the number of the rollers needs to be increased, and the phenomenon of missing installation cannot be avoided by manual assembly; 3. because the retainer is made of PA66, the roller needs to be loaded from the radial outer side of the retainer when in assembly, the force applied by hands is not controllable, and the risk of crushing or scratching the roller path and the roller caused by excessive force is existed; 4. after one retainer is filled, the other retainer needs to be installed in a turnover mode, and the turnover process greatly increases the working strength.

SUMMERY OF THE UTILITY MODEL

The utility model provides high-precision double-row cylindrical roller bearing nondestructive assembly equipment, aiming at solving the problems that the quality of a bearing is easily influenced by scratching and bruising between rollers in the assembly process of the existing high-precision bearing, the manual assembly cannot avoid neglected assembly, and the working strength is higher.

The technical scheme adopted by the utility model for solving the problems is as follows: the utility model comprises a feeding device, a cam push-in roller mechanism, a bearing equal-division rotating device and a working platform lifting mechanism; the cam push-in roller mechanism is installed on the lifting mechanism of the working platform, the feeding device is installed on one side of the left end of the cam push-in roller mechanism, and the bearing equal division rotating device is installed at the left end of the cam push-in roller mechanism.

Furthermore, the feeding device comprises a crank, a crank arm, a supporting shaft sleeve, a connecting shaft, a push rod, a material channel and a motor; one end of the crank is connected with a motor shaft of the motor, the supporting shaft sleeve is fixedly sleeved on the motor shaft of the motor, the other end of the crank is connected with one end of the crank arm, the other end of the crank arm is rotatably connected with the upper end of the push rod through the connecting shaft, and the lower end of the push rod pushes the roller in the material channel.

Furthermore, the feeding device also comprises a small support sleeve and a compression nut; the small supporting sleeve is sleeved on the connecting shaft and is positioned between the push rod and the crank arm, and the compression nut is sleeved on the outer end of the connecting shaft.

Furthermore, the pushing roller end of the push rod is of a split structure, and the push rod is made of nylon materials.

Further, the cam pushing roller mechanism comprises a retainer, a roller, two bearings, a cam, a long groove sliding push rod and a slide way; the cam is connected with a motor shaft of the motor 42, the long groove sliding push rod is installed in the slide way, the cam is connected with the long groove sliding push rod through two bearings, and the long groove sliding push rod pushes the roller to enter a roller path of the bearing inner ring through the retainer.

Further, the bearing halving rotating device comprises a plurality of connecting bolts, a plurality of connecting nuts, a roller mounting pad, a retainer separating ring and a motor 86; the motor 86 is installed on the equipment box body through a plurality of connecting bolts and a plurality of connecting nuts, the roller installing pad is connected with a motor shaft of the motor 86, the retainer is sleeved on the roller installing pad, and the retainer separating ring is sleeved on the retainer.

Further, the working platform lifting mechanism comprises a driving gear, a driven gear, two rack platforms, a connecting shaft and a working platform; two rack platforms are vertical setting side by side, driving gear and driven gear set up side by side between two rack platforms, and driving gear and driven gear meshing, the driving gear meshes with adjacent rack platform that closes on, driven gear with to adjacent rack platform meshing, the motor shaft fixed connection of driving gear and the motor of fixing on the equipment box, driven gear fixed suit is on the connecting axle, work platform horizontal installation is in the upper end of two rack platforms.

The utility model has the beneficial effects that: the utility model provides semi-automatic high-precision double-row cylindrical roller bearing assembling equipment and method. The special structure is adopted to realize that the roller does not scratch or touch when feeding materials; the rotary halving mechanism is utilized to realize no missing installation; the displacement of the radial outer side when the roller path is installed in the radial direction is limited by controlling the displacement, so that the roller path and the roller are prevented from being crushed or scratched; assembling an upper retainer and a lower retainer by using a lifting mechanism instead of a turning step; the purpose of high-precision nondestructive assembly is finally achieved through the four links; the utility model has high stability, simple mechanism structure, small friction and abrasion of the working surface and convenient maintenance; the utility model is convenient to operate, and the whole set of mechanism only has two positions A-A, B-B which need to be adjusted; the utility model has low cost, all the materials of the mechanism are Q235, 40Cr steel, nylon, standard bearings, GCr15 and standard parts of bolts and nuts, which are common and low-price materials; the utility model is convenient to process, each part has simple structure, and the processing can be finished by using a common lathe, a milling machine and a grinding machine; the precision requirements of all parts are low, the precision of the whole set of mechanism is obtained by adjustment in use, and the processing difficulty is greatly reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the charging device;

FIG. 3 is a sectional view taken along line B-B of FIG. 2;

FIG. 4 is a schematic of the construction of the cam push-in roller mechanism;

FIG. 5 is a schematic structural view of a bearing equal-division rotating device;

FIG. 6 is a top view of the work platform lift mechanism;

fig. 7 is a front view of the work platform lift mechanism.

Detailed Description

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 7, and the high-precision double-row cylindrical roller bearing nondestructive assembly equipment of the embodiment comprises a feeding device 1, a cam push-in roller mechanism 2, a bearing equal-division rotating device 3 and a working platform lifting mechanism 4; the cam push-in roller mechanism 2 is arranged on the lifting mechanism 4 of the working platform, the feeding device 1 is arranged on one side of the left end of the cam push-in roller mechanism 2, and the bearing equal-division rotating device 3 is arranged at the left end of the cam push-in roller mechanism 2.

The second embodiment is as follows: the feeding device 1 of the high-precision double-row cylindrical roller bearing nondestructive assembly equipment comprises a crank 1-1, a crank arm 1-2, a supporting shaft sleeve 1-3, a connecting shaft 1-4, a push rod 1-7, a material channel 1-8 and a motor 42; one end of the crank 1-1 is connected with a motor shaft of the motor 42, the supporting shaft sleeve 1-3 is fixedly sleeved on the motor shaft of the motor 42, the other end of the crank 1-1 is connected with one end of the crank arm 1-2, the other end of the crank arm 1-2 is rotatably connected with the upper end of the push rod 1-7 through the connecting shaft 1-4, and the lower end of the push rod 1-7 pushes the roller in the material channel 1-8.

The push rods 1-7 push the rollers fixed in the feeding channels 1-8 of the working platform and push the rollers to the designated positions on the slide ways; thereafter, the cam push-in roller mechanism 2 operates.

A motor in the feeding device 1 is arranged on a workbench platform, a motor shaft of the feeding device is connected with a crank 1-1, a material channel 1-8 is also fixed on the workbench platform, the height of the bottom of the material channel and the height of a part for containing a roller are consistent with the height of a slideway 2-6, so that the roller can move on the same height plane when the roller is pushed, and a window is formed on the material channel on the basis of the height for the reciprocating motion of a push rod 1-7. Determining the height and position of a push rod according to the height of a material channel window, connecting a crank arm 1-2 through a connecting shaft 1-4, adjusting the height by using a small supporting sleeve 1-5, fixing by mounting a compression nut 1-6, connecting the crank arm 1-2 with fixed height with a shaft on a crank 1-1, and adjusting the height by using a supporting shaft sleeve 1-3 to complete the device; the push rod can be with on the roller in the material says pushes away the slide, the roller in the material is said simultaneously and falls on the push rod upper surface, the crank rotates half a circle push rod again and resets, the roller on the push rod upper surface falls in the material is said on the surface of same height with the slide.

Other components and connections are the same as those in the first embodiment.

The third concrete implementation mode: the embodiment is described with reference to fig. 1 to 7, and the feeding device 1 of the high-precision double-row cylindrical roller bearing nondestructive assembly equipment of the embodiment further comprises small support sleeves 1-5 and compression nuts 1-6; the small supporting sleeve 1-5 is sleeved on the connecting shaft 1-4, the small supporting sleeve 1-5 is positioned between the push rod 1-7 and the crank arm 1-2, and the compression nut 1-6 is sleeved on the outer end of the connecting shaft 1-4. Other components and connection relationships are the same as those in the second embodiment.

The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 7, the roller pushing end of the push rod 1-7 of the high-precision double-row cylindrical roller bearing nondestructive assembling apparatus according to the present embodiment is a split structure, and the push rod 1-7 is made of nylon material. Other components and connection relationships are the same as those in the second embodiment.

The fifth concrete implementation mode: the embodiment is described with reference to fig. 1 to 7, and the cam pushing-in roller mechanism 2 of the high-precision double-row cylindrical roller bearing nondestructive assembling equipment in the embodiment comprises a retainer 2-1, a roller 2-2, two bearings 2-3, a cam 2-4, a long groove sliding push rod 2-5 and a slideway 2-6; the cam 2-4 is connected with a motor shaft of a motor 42, a long groove sliding push rod 2-5 is arranged in a slideway 2-6, the cam 2-4 is connected with the long groove sliding push rod 2-5 through two bearings 2-3, and the long groove sliding push rod 2-5 pushes the roller 2-2 to enter a bearing inner ring raceway through a retainer 2-1.

The cam 2-4 is connected with a motor shaft of the motor 42 to rotate, the cam is connected with the long groove sliding rod 2-5 by a standard bearing 2-3 to transmit thrust, and the push roller 2-2 enters a bearing inner ring raceway through the retainer 2-1; thereafter the bearing halving rotating device 3 is operated;

the cam is pushed into the roller mechanism 2, the cam 2-4 pushes the standard bearing 2-3 with the long groove sliding push rod 2-5 in the process of rotating a half circle through the motor, the roller 2-2 is pushed to enter the bearing inner ring raceway through the retainer 2-1, and the cam 2-4 continuously rotates the long groove sliding push rod 2-5 to reset.

Other components and connections are the same as those in the first embodiment.

The sixth specific implementation mode: the embodiment is described with reference to fig. 1 to 7, and the bearing equal division rotating device 3 of the high-precision double-row cylindrical roller bearing nondestructive assembly equipment in the embodiment comprises a plurality of connecting bolts 3-1, a plurality of connecting nuts 3-2, roller-mounting pads 3-3, a retainer separating ring 3-4 and a motor 86; the motor 86 is arranged on the equipment box body through a plurality of connecting bolts 3-1 and a plurality of connecting nuts 3-2, the roller pad 3-3 is connected with a motor shaft of the motor 86, the retainer is sleeved on the roller pad 3-3, and the retainer separating ring 3-4 is sleeved on the retainer.

The motor 86 is connected with the roller mounting pad 3-3 through the connecting bolt 3-1 and the connecting nut 3-2, a motor shaft of the motor 86 drives the roller mounting pad to rotate 1/N and equally divide and mount the next roller, the lower retainer is mounted and then the upper retainer is mounted, and the upper retainer and the lower retainer are separated by the retainer separating ring 3-4 and are lifted up to the height required by assembly.

The motor is fixed on the equipment box body through a connecting bolt 3-1 and a connecting nut 3-2, a motor shaft is connected with the roller mounting pad 3-3, the motor shaft rotates 1/N equal parts to drive the roller mounting pad 3-3 to rotate 1/N equal parts together, and the inner ring and the retainer are both seated on the roller mounting pad and are equally divided together. After the next retainer is assembled, the retainer separating rings 3-4 are placed on the upper surface of the retainer and used for adjusting the heights of the two retainer pockets and the inner ring roller path. The upper holder is then placed ready for a second holder.

Other components and connections are the same as those in the first embodiment.

The seventh embodiment: the embodiment is described with reference to fig. 1 to 7, and the working platform lifting mechanism 4 of the high-precision double-row cylindrical roller bearing nondestructive assembling equipment in the embodiment comprises a driving gear 4-1, a driven gear 4-2, two rack platforms 4-3, a connecting shaft 4-4 and a working platform 4-5; the two rack platforms 4-3 are vertically arranged side by side, the driving gear 4-1 and the driven gear 4-2 are arranged between the two rack platforms 4-3 side by side, the driving gear 4-1 is meshed with the driven gear 4-2, the driving gear 4-1 is meshed with one adjacent rack platform 4-3, the driven gear 4-2 is meshed with the adjacent rack platform 4-3, the driving gear 4-1 is fixedly connected with a motor shaft of a motor fixed on an equipment box body, the driven gear 4-2 is fixedly sleeved on the connecting shaft 4-4, and the working platform 4-5 is horizontally arranged at the upper ends of the two rack platforms 4-3.

After the retainer is completely arranged, the 4-stage lifting mechanism works, the motor 42 drives the driving gear 4-1 to rotate, the driving gear 4-1 is meshed with the driven gear 4-2 through the connecting shaft 4-4 to rotate together, the rack platform 4-3 is driven to move, and the rack platform 4-3 supports the working platform 4-5 to lift together.

The motor fixed on the box body of the equipment drives the driving gear 4-1 to rotate, and the driving gear is engaged with the accurate position of the main gear 4-2 placed through the connecting shaft 4-4 to rotate to drive the rack platform 4-3 which supports the working platform 4-5 to move up and down and has the same height with the pocket hole of the upper retainer

Other components and connections are the same as those in the first embodiment.

Principle of operation

This equipment uses 4 small-size motors as the power supply, uses PLC to realize coordinated control to reach the purpose of accurate assembly. The device comprises a roller feeding device 1, a cam pushing roller mechanism 2, a bearing equal-division rotating device 3 and a working platform lifting mechanism 4. In order to ensure that the precision of the roller is not damaged, the roller vertically falls down along the material channel, so that the working surface of the roller is not damaged, the roller falls down on the upper surface of a roller pushing rod in the feeding device, the roller pushing rod moves backwards, is blocked by the material channel and cannot move along with the material channel, only can continuously fall down along the material channel, falls on a workbench, the roller pushing rod moves forwards, the front surface of a roller pushing rod nylon head is just opposite to the roller, and the roller is pushed to move to a specified position; after the working table reaches the designated position, a cam on the working table pushes the roller mechanism 2 to work, and the cam rotates to drive the long groove sliding push rod to push the roller into the raceway; after a roller is assembled, the bearing equal division rotating device 3 works to rotate out the required 1/N equal division, and then the roller assembling sub-step is repeated to assemble a circle of rollers of the lower retainer; then the lifting mechanism 4 of the working platform is started, the working platform is lifted to the height required by the roller loading of the upper retainer through the linear motion of the gear and the rack, and the steps are repeated to complete the roller loading of the upper retainer. The accurate displacement of the roller is controlled through the assembling mode, and the nondestructive assembly of the double-row cylindrical roller bearing is realized.

The assembling method of the high-precision double-row cylindrical roller bearing assembling device adopts the technical scheme that the assembling method comprises the following steps:

step A: placing the inner ring of the bearing on a roller pad, wherein the end face of a large hole of an inner hole with taper of the inner ring is arranged at the lower part, and the end face of a small hole is arranged at the upper part; the retainer is placed at a corresponding position for mounting the roller pads, and the pockets on the retainer correspond to the equant grooves on the roller pads.

And B: the roller is vertically loaded into the material channel until the roller is full, the feeding device works, the crank rotates to drive the push rod to move forwards to push the roller, the cylindrical surface of the roller is contacted with the arc surface at the front end of the push rod, the roller automatically centers and moves along the pushing direction, and the diameter distance of the half-turn rotation of the crank is just the distance of the roller moving towards the direction of the slideway; when the push rod moves forwards, the roller in the material channel falls on the upper surface of the push rod, the crank continues to rotate the push rod to reset, and the roller falls on the platform of the material channel from the upper surface of the push rod, so that the cyclic operation of repeatedly pushing the roller is realized.

And C: and C, after the roller reaches the designated position of the slideway through the step B, pushing the cam into the roller mechanism to work, pushing the standard bearing with the long groove sliding push rod in the process of rotating the motor for a half circle, and pushing the roller to enter the bearing inner ring raceway through the retainer. The cam continues to rotate, the long groove sliding push rod resets.

And D, after one roller is installed, the bearing equally divides the rotating device to work, and after 1/N equally divides the device, the step B, C is repeated.

Step E: after filling the next cage pocket, the cage spacer ring is placed on the lower cage, another cage is placed, the elevator is started, and the step B, C, D is repeated.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (7)

1. The utility model provides a harmless rigging equipment of high accuracy double-row cylindrical roller bearing which characterized in that: the high-precision double-row cylindrical roller bearing nondestructive assembly equipment comprises a feeding device (1), a cam push-in roller mechanism (2), a bearing equal-division rotating device (3) and a working platform lifting mechanism (4); the cam push-in roller mechanism (2) is installed on the working platform lifting mechanism (4), the feeding device (1) is installed on one side of the left end of the cam push-in roller mechanism (2), and the bearing equal division rotating device (3) is installed at the left end of the cam push-in roller mechanism (2).

2. The high-precision double-row cylindrical roller bearing nondestructive assembly equipment of claim 1, characterized in that: the feeding device (1) comprises a crank (1-1), a crank arm (1-2), a supporting shaft sleeve (1-3), a connecting shaft (1-4), a push rod (1-7), a material channel (1-8) and a motor (42); one end of the crank (1-1) is connected with a motor shaft of the motor (42), the supporting shaft sleeve (1-3) is fixedly sleeved on the motor shaft of the motor (42), the other end of the crank (1-1) is connected with one end of the crank arm (1-2), the other end of the crank arm (1-2) is rotatably connected with the upper end of the push rod (1-7) through the connecting shaft (1-4), and the lower end of the push rod (1-7) pushes the roller in the material channel (1-8).

3. The high-precision double-row cylindrical roller bearing nondestructive assembly equipment of claim 2 is characterized in that: the feeding device (1) also comprises a small supporting sleeve (1-5) and a compression nut (1-6); the small supporting sleeve (1-5) is sleeved on the connecting shaft (1-4), the small supporting sleeve (1-5) is positioned between the push rod (1-7) and the crank arm (1-2), and the compression nut (1-6) is sleeved on the outer end of the connecting shaft (1-4).

4. The high-precision double-row cylindrical roller bearing nondestructive assembly equipment of claim 2 is characterized in that: the push roller end of the push rod (1-7) is of a split structure, and the push rod (1-7) is made of nylon materials.

5. The high-precision double-row cylindrical roller bearing nondestructive assembly equipment of claim 1, characterized in that: the cam push-in roller mechanism (2) comprises a retainer (2-1), a roller (2-2), two bearings (2-3), a cam (2-4), a long groove sliding push rod (2-5) and a slideway (2-6); the cam (2-4) is connected with a motor shaft of the motor (42), the long groove sliding push rod (2-5) is installed in the slide way (2-6), the cam (2-4) is connected with the long groove sliding push rod (2-5) through two bearings (2-3), and the long groove sliding push rod (2-5) pushes the roller (2-2) to enter a bearing inner ring raceway through the retainer (2-1).

6. The high-precision double-row cylindrical roller bearing nondestructive assembly equipment of claim 1, characterized in that: the bearing equal division rotating device (3) comprises a plurality of connecting bolts (3-1), a plurality of connecting nuts (3-2), roller-mounting pads (3-3), a retainer separating ring (3-4) and a motor (86); the motor (86) is arranged on the equipment box body through a plurality of connecting bolts (3-1) and a plurality of connecting nuts (3-2), the roller mounting pad (3-3) is connected with a motor shaft of the motor (86), the retainer is sleeved on the roller mounting pad (3-3), and the retainer separating ring (3-4) is sleeved on the retainer.

7. The high-precision double-row cylindrical roller bearing nondestructive assembly equipment of claim 1, characterized in that: the working platform lifting mechanism (4) comprises a driving gear (4-1), a driven gear (4-2), two rack platforms (4-3), a connecting shaft (4-4) and a working platform (4-5); the two rack platforms (4-3) are vertically arranged side by side, the driving gear (4-1) and the driven gear (4-2) are arranged between the two rack platforms (4-3) side by side, the driving gear (4-1) is meshed with the driven gear (4-2), the driving gear (4-1) is meshed with one adjacent rack platform (4-3), the driven gear (4-2) is meshed with one adjacent rack platform (4-3), the driving gear (4-1) is fixedly connected with a motor shaft of a motor fixed on an equipment box body, the driven gear (4-2) is fixedly sleeved on the connecting shaft (4-4), and the working platform (4-5) is horizontally arranged at the upper ends of the two rack platforms (4-3).

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