CN113118733A

CN113118733A - Bearing press mounting equipment

Info

Publication number: CN113118733A
Application number: CN201911406897.7A
Authority: CN
Inventors: 薛勇
Original assignee: Kunshan Linggong Automation Equipment Co ltd
Current assignee: Kunshan Linggong Automation Equipment Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-16

Abstract

The invention relates to the technical field of bearing assembly and discloses bearing press-fitting equipment which comprises a vertical plate and a flat plate fixed on the vertical plate; two groups of bearing positioning fixtures which are matched with each other are arranged above the flat plate, and a shaft fixing fixture is arranged between the two groups of bearing positioning fixtures; a press-connection bearing mechanism is arranged below the flat plate, and the press-connection bearing mechanism is pressed through jacking and is used for sleeving the bearings fixed on the two groups of bearing positioning jigs on the shaft; and a press-fitting depth control mechanism is also arranged above the bearing positioning jig at the higher position. By applying the technical scheme of the invention, the press-in assembly of the bearing is quick and efficient, two bearing parts can be loaded in one time, the labor is saved, and the coaxiality is ensured. In the bearing press-fitting process, under the matching of the bearing positioning jig and the press-fitting depth control mechanism, the press-fitting depth is controllable, the press-fitting quality is high and stable, and the yield is high. In addition, the bearing press-fitting equipment is wide in applicability and meets the assembly requirements of shaft parts with various specifications, namely bearing products.

Description

Bearing press mounting equipment

Technical Field

The invention relates to the technical field of bearing assembly, in particular to bearing press-fitting equipment.

Background

In the field of mechanical equipment manufacturing, shaft parts are generally required to be mounted with bearings as long as the shaft parts are provided. When the bearing is installed, generally, the shaft part is centered through manual operation, then the shaft part is knocked by external force, and the shaft part is sent into the bearing through knocking. Manual operation has the following disadvantages: the working intensity of operators is high, the working efficiency is low, the rejection rate is high, and parts are easy to damage; in addition, the press-fitting quality of the bearing is poor.

In view of the above, the present invention provides a bearing press-fitting device for assembling a bearing, which overcomes the above disadvantages and drawbacks.

Disclosure of Invention

The invention aims to provide bearing press-fitting equipment to solve the technical problems of poor bearing press-fitting quality and low efficiency in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a bearing press-fitting apparatus, including a vertical plate and a flat plate fixed thereto; two groups of bearing positioning fixtures which are matched with each other are arranged above the flat plate, and a shaft fixing fixture is arranged between the two groups of bearing positioning fixtures; a press-connection bearing mechanism is arranged below the flat plate, and the press-connection bearing mechanism is pressed through jacking and is used for sleeving the bearings on the two groups of bearing positioning jigs on the shaft; and a press-fitting depth control mechanism is also arranged above the bearing positioning jig at the higher position.

Further, the two sides of the vertical plate are provided with slide rails in pairs along the height direction of the vertical plate, and the crimping bearing mechanism, the shaft fixing tool and the slide rails are in sliding fit.

Furthermore, the two groups of bearing positioning jigs are divided into an upper bearing positioning jig and a lower bearing positioning jig.

Further, the upper bearing positioning jig moves up and down along the slide rail, the upper bearing positioning jig comprises two slide blocks arranged on the slide rail in a sliding mode, an upper bearing positioning plate is fixed on each slide block, and positioning holes are formed in the upper bearing positioning plate.

Furthermore, the upper bearing positioning jig is connected with a push-pull device which pushes the upper bearing positioning jig to move up and down along the sliding rail.

Further, lower bearing positioning tool is including locating the lower bearing locating plate of dull and stereotyped top, and the locating hole has been seted up to lower bearing locating plate, and the fixed setting of lower bearing locating plate.

Further, the press-connection bearing mechanism moves up and down along the sliding rail and comprises a first sliding plate in sliding fit with the sliding rail; the first sliding plate is fixedly connected with a jacking cylinder corresponding to the lower bearing positioning jig, and the first sliding plate is further connected with a lifting screw rod assembly fixed on the vertical plate.

Furthermore, the top pressure barrel is divided into two sections, and the two sections of top pressure barrels are fixedly connected by a pressure sensor.

Further, the fixed frock of axle reciprocates along the slide rail, and this fixed frock of axle includes the second slide with slide rail sliding fit, is fixed with axle mounting on the second slide.

Furthermore, the press-fitting depth control mechanism comprises a lower pressing barrel arranged corresponding to the upper bearing positioning jig, the upper end of the lower pressing barrel is connected with a lifting screw rod assembly, and the lifting screw rod assembly drives the lower pressing barrel to stretch.

By applying the technical scheme of the invention, the shaft fixing tool clamps the shaft part which is vertically placed, the two groups of bearing positioning tools are respectively used for clamping the bearings to be assembled, and the bearings correspond to two ends of the shaft part. The bearing crimping mechanism moves upwards, and a bearing on a low-position bearing positioning jig (namely a bearing positioning jig at a lower position) is jacked and sleeved on the lower section of the shaft part; then, the bearing and the shaft part are jacked up continuously, so that the bearing on the high-position bearing positioning jig (namely the bearing positioning jig at the higher position) is sleeved into the upper section of the shaft part under the limitation of the press-fitting depth control mechanism; and then, the bearing crimping mechanism continues to move upwards, and the two bearings sleeved on the shaft part are completely crimped into the shaft part and fixed. Therefore, the press-in assembly of the bearing is quick and efficient, two bearing parts can be loaded in one time, labor is saved, and the coaxiality is guaranteed to some extent. In the bearing press-fitting process, under the matching of the bearing positioning jig and the press-fitting depth control mechanism, the press-fitting depth is controllable, the press-fitting quality is high and stable, and the yield is high. In addition, the bearing press-fitting equipment is wide in applicability, a bearing positioning jig is convenient to replace, the condition that the shaft part is clamped by the shaft fixing tool is adjusted, and the assembly requirements of shaft parts with various specifications and bearing products are met.

Drawings

FIG. 1 is a schematic structural view (perspective) of a preferred embodiment of the present invention;

FIG. 2 is a front schematic view of FIG. 1;

FIG. 3 is a schematic side view of FIG. 1;

FIG. 4 is a schematic view of the structure of FIG. 1 from another perspective (with parts hidden for ease of illustration);

FIG. 5 is a partial schematic view of section A of FIG. 4 (with the bearing undamped; with parts hidden for ease of illustration);

FIG. 6 is a partial schematic view of portion A of FIG. 4 (with the bearing clamped; with parts hidden for ease of illustration);

reference numerals:

the device comprises a vertical plate 1, a lifting screw rod assembly 2, a first sliding plate 3, a pressure sensor 4, a sliding rail 5, a jacking cylinder 6, an upper bearing positioning plate 7, a sliding block 8, a servo motor 9, a push-pull device 10, a lower pressing cylinder 11, a clamp 12, a supporting fork 13, a lower bearing positioning plate 14, a flat plate 15, a base 16, an upper bearing positioning jig 17, a lower bearing positioning jig 18, a crimping bearing mechanism 19, a second sliding plate 20, a shaft fixing tool 21, a press-fitting depth control mechanism 22, a positioning hole 23 and a through hole 24.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus, it should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; of course, mechanical connection and electrical connection are also possible; alternatively, they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Examples

As shown in fig. 1-6, the present invention provides a bearing press-fitting device, which comprises a vertical plate 1 and a flat plate 15 fixed thereon; two groups of

bearing positioning jigs

17 and 18 which are matched with each other are arranged above the flat plate 15, and a shaft fixing tool 21 is arranged between the two groups of bearing

positioning jigs

17 and 18; a press-connection bearing mechanism 19 is arranged below the flat plate 15, the press-connection bearing mechanism 19 is pressed through jacking, and bearings on the two groups of bearing

positioning jigs

17 and 18 are sleeved on the shaft; a press-fitting depth control mechanism 22 is also arranged above the bearing positioning jig 17 at the higher position.

A base 16 is fixed at the bottom of the vertical plate 1. The two sides of the vertical plate 1 are provided with slide rails 5 in pairs along the height direction of the vertical plate 1, and the crimping bearing mechanism 19, the shaft fixing tool 21 and the slide rails 5 are in sliding fit.

The slide rail 5 is used for providing a guiding function when the press-fit bearing mechanism 19 and the shaft fixing tool 21 slide. Because the flat plate 15 is fixed on the vertical plate 1, the flat plate 15 is provided with avoidance holes corresponding to the two slide rails 5.

The two sets of

bearing positioning jigs

17 and 18 are divided into an upper bearing positioning jig 17 and a lower bearing positioning jig 18.

The bearing positioning jig 17 at the higher position mentioned above is referred to as the upper bearing positioning jig 17.

The upper bearing positioning jig 17 moves up and down along the slide rail 5, the upper bearing positioning jig 17 comprises two slide blocks 8 arranged on the slide rail 5 in a sliding mode, an upper bearing positioning plate 7 is fixed on each slide block 8, and a positioning hole 23 is formed in the surface of the upper bearing positioning plate 7.

The positioning hole 23 is used for mounting and positioning an upper bearing (a bearing located at the upper end of the shaft member), and a step (refer to the positioning hole 23 structure on the lower bearing positioning plate 14 described below) is formed in the positioning hole 23 for supporting the upper bearing. As shown in fig. 4-6. The positioning hole 23 is used for the upper end of the shaft part to extend upwards and penetrate through the upper bearing when being pressed by the press-connection bearing mechanism 19, the upper end of the shaft part can continue to extend upwards into the lower pressing barrel 11 (described below) after extending out of the upper bearing, and the barrel mouth of the lower pressing barrel 11 presses the inner ring of the bearing. This facilitates the pressing of the bearing mechanism 19 to push the upper bearing into the shaft part.

The upper bearing positioning jig 17 is connected with a push-pull device 10 which pushes the upper bearing positioning jig to move up and down along the slide rail 5.

The push-pull equipment 10 is fixed on the vertical plate 1 and can be a pneumatic cylinder, a hydraulic cylinder or an electric cylinder, and the telescopic ends of the pneumatic cylinder, the hydraulic cylinder and the electric cylinder are connected with the sliding block 8 of the upper bearing positioning jig 17.

The lower bearing positioning jig 18 comprises a lower bearing positioning plate 14 arranged above the flat plate 15, a positioning hole 23 is formed in the lower bearing positioning plate 14, and the lower bearing positioning plate 14 is fixedly arranged.

The positioning hole 23 is used for mounting and positioning a lower bearing (a bearing located at the lower end of the shaft member), and a through hole 24 is formed in the flat plate 15 corresponding to the positioning hole 23. When the lower bearing is pressed by the pressing bearing mechanism 19, the through hole 24 is used for the lower bearing to be sleeved into the lower end of the shaft part and the lower end of the shaft part extends out of the lower bearing, the lower end of the shaft part can further extend downwards into a pressing cylinder 6 (described below), and the cylinder opening of the pressing cylinder 6 presses against the inner ring of the bearing. The inner diameter of the positioning hole 23 is larger than that of the through hole 24, so that a step is formed between the positioning hole 23 and the through hole 24 (of the plate 15) for supporting the lower bearing. As shown in fig. 4-6. This facilitates the pressing of the bearing mechanism 19 to push the lower bearing into the shaft member.

The press-connection bearing mechanism 19 moves up and down along the slide rail 5, and the press-connection bearing mechanism 19 comprises a first slide plate 3 which is in sliding fit with the slide rail 5; the first sliding plate 3 is fixedly connected with a jacking cylinder 6 corresponding to the lower bearing positioning jig 18, and the first sliding plate 3 is also connected with a lifting screw rod assembly 2 fixed on the vertical plate 1.

The lifting screw assembly 2 is a ball screw, a moving nut of the ball screw is fixedly connected with the first sliding plate 3, and the ball screw is provided with a servo motor 9 for driving the ball screw to rotate. Under the drive of the servo motor 9, the movable nut can drive the first sliding plate 3 and the top pressure cylinder 6 thereon to move up and down to top the lower bearing.

The top pressure cylinder 6 is divided into two sections, and the two sections of top pressure cylinders 6 are fixedly connected by the pressure sensor 4.

The pressure sensor 4 is a LLBHM-I miniature diaphragm type load sensor of Shanghai Luong electronic technology Limited, two ends of the LLBHM-I miniature diaphragm type load sensor are respectively and correspondingly connected with the end parts of the two sections of top pressure cylinders 6, and the two sections of top pressure cylinders 6 are fixedly connected. The pressure sensor 4 can detect the pressure value in real time during the press mounting of the bearing, and when the pressure value is not within the range of the set value, the press-mounted bearing-shaft part assembly can be judged to be an unqualified product. When the deviation of the positioning position of the bearing which does not reach the standard occurs or the coaxiality of the bearing and the shaft part does not reach the standard, the bearing pressing mechanism 19 needs to be pressed to increase the pressing force in the pressing process so as to complete the pressing operation; and pressure sensor 4 just can detect the pressure value of pressure equipment this moment to can judge whether pressure equipment quality is up to standard, discern the defective products then.

The shaft fixing tool 21 moves up and down along the sliding rail 5, the shaft fixing tool 21 comprises a second sliding plate 20 in sliding fit with the sliding rail 5, and a shaft fixing part is fixed on the second sliding plate 20.

By adjusting the installation height of the shaft fixing tool 21, shaft parts with different length sizes can be conveniently fixed on the shaft fixing tool 21. The shaft fixing member may be a support fork 13 for supporting a shoulder of the shaft part and lifting the shaft part, or a jig 12 for holding a middle section of the shaft part.

The press-fitting depth control mechanism 22 comprises a lower pressing barrel 11 arranged corresponding to the upper bearing positioning jig 17, the upper end of the lower pressing barrel 11 is connected with the lifting screw rod assembly 2, and the lifting screw rod assembly 2 drives the lower pressing barrel 11 to stretch.

The lifting screw assembly 2 is a ball screw, a moving nut of the ball screw is fixedly connected with a pressing cylinder 11, and the pressing cylinder 11 is coaxially arranged with a screw body of the ball screw. The ball screw is provided with a servo motor 9 for driving the ball screw to rotate, and under the driving of the servo motor 9, the movable nut can drive the lower pressing barrel 11 to move up and down to push the upper bearing.

In order to prevent the bearing from being over-pressed, the pressing depth of the bearing into the shaft part can be controlled by the pressing depth control mechanism 22, and the bearing, the shaft part and a clamp spring arranged on the shaft part are prevented from being damaged by excessive pressing. The distance between the opening of the lower pressing cylinder 11 and the upper end face of the shaft part is set properly according to the press-fitting position and depth of the shaft part and the thickness of the bearing. The bearing can be pressed in place according to the preset value.

By applying the technical scheme of the invention, the shaft part is fixed in the shaft fixing tool 21, the upper bearing and the lower bearing are respectively sent into the upper bearing positioning tool 17 and the lower bearing positioning tool 18 corresponding to the shaft part, the upper bearing is correspondingly positioned above the shaft part, and the lower bearing is correspondingly positioned below the shaft part. The servo motor 9 drives the compression joint bearing mechanism 19 to move upwards through the ball screw, the top pressure cylinder 6 of the compression joint bearing mechanism 19 moves upwards, the lower bearing is pushed into the lower section of the shaft part, and the prepressing position is at the moment; then the top pressure cylinder 6 continues to push the lower bearing and the shaft part to move upwards together. Under the limit of the lower pressing cylinder 11 of the press-fitting depth control mechanism 22, the upper bearing is sleeved in the upper section of the shaft part, and the pre-pressing position is also adopted at the moment; the crimp bearing mechanism 19 stops moving upward. Next, the push-pull device 10, configured as a pneumatic cylinder, drives the upper bearing positioning fixture 17 to move up. At this time, the upper and lower bearings are separated from the bearing positioning jigs 17 and 18, and the shaft component is also separated from the shaft fixing jig 21. Then, the pressing cylinder 6 of the press-contact bearing mechanism 19 moves upward again, and the upper and lower bearings are completely pressed into the shaft component by the cooperation of the pressing cylinder 6 and the pressing cylinder 11. In the whole process, the pressure sensor 4 detects the press-fitting pressure in real time, judges the press-fitting quality and identifies defective products.

By applying the technical scheme of the invention, when the bearings are pressed at two ends of the shaft part, the shaft part does not need to be assembled one by one in two times. The labor cost is saved, the injury of workers in press mounting is avoided, and the production efficiency is improved by about 50%. In addition, the yield of the bearing-shaft part assembly is improved to 100 percent from 70 percent.

Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, but not to limit the technical solutions, and the patent scope of the present invention is not limited; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; in addition, the technical scheme of the invention is directly or indirectly applied to other related technical fields, and the technical scheme is included in the patent protection scope of the invention.

Claims

1. A bearing press-fitting device is characterized by comprising a vertical plate and a flat plate fixed on the vertical plate; two groups of bearing positioning fixtures which are matched with each other are arranged above the flat plate, and a shaft fixing fixture is arranged between the two groups of bearing positioning fixtures; a press-connection bearing mechanism is arranged below the flat plate, and the press-connection bearing mechanism is pressed through jacking and is used for sleeving the bearings on the two groups of bearing positioning jigs on the shaft; and a press-fitting depth control mechanism is also arranged above the bearing positioning jig at the higher position.

2. The bearing press-fitting equipment according to claim 1, wherein slide rails are arranged on two sides of the vertical plate in pairs along the height direction of the vertical plate, and the press-fit bearing mechanism and the shaft fixing tool are in sliding fit with the slide rails.

3. A bearing press-fitting apparatus according to claim 2, wherein said two sets of bearing positioning jigs are divided into an upper bearing positioning jig and a lower bearing positioning jig.

4. A bearing press-fitting device as claimed in claim 3, wherein the upper bearing positioning jig moves up and down along the slide rail, the upper bearing positioning jig comprises two slide blocks slidably disposed on the slide rail, an upper bearing positioning plate is fixed on the slide blocks, and the upper bearing positioning plate is provided with positioning holes.

5. A bearing press-fitting device according to claim 3 or 4, wherein the upper bearing positioning jig is connected with a push-pull device for pushing the upper bearing positioning jig to move up and down along the slide rail.

6. A bearing press-fitting device as claimed in claim 3, wherein the lower bearing positioning jig comprises a lower bearing positioning plate disposed above the flat plate, the lower bearing positioning plate is provided with positioning holes, and the lower bearing positioning plate is fixedly disposed.

7. A bearing press-fitting apparatus as claimed in claim 3, wherein the press-fit bearing mechanism moves up and down along the slide rail, the press-fit bearing mechanism including a first slide plate in sliding engagement with the slide rail; the first sliding plate is fixedly connected with a jacking cylinder corresponding to the lower bearing positioning jig, and the first sliding plate is further connected with a lifting screw rod assembly fixed on the vertical plate.

8. A bearing press-fitting equipment as claimed in claim 7, wherein the top pressing barrel is divided into two sections, and the two sections of top pressing barrels are fixedly connected by a pressure sensor.

9. A bearing press-fitting device as claimed in claim 2, wherein the shaft fixing tool moves up and down along the slide rail, the shaft fixing tool includes a second slide plate in sliding fit with the slide rail, and a shaft fixing member is fixed on the second slide plate.

10. A bearing press-fitting device as claimed in claim 3, wherein the press-fitting depth control mechanism comprises a lower pressing barrel arranged corresponding to the upper bearing positioning jig, the upper end of the lower pressing barrel is connected with a lifting screw rod assembly, and the lifting screw rod assembly drives the lower pressing barrel to extend and retract.