CN220698779U - Automatic press-fitting device for differential bearing - Google Patents

Abstract

The utility model relates to the technical field of automatic assembly, and provides an automatic press-fitting device for differential bearings. The workbench is fixedly connected with the upper bearing press-fitting mechanism through an optical axis, and the conveying belt mechanism and the bearing feeding mechanism can be fixedly arranged between the workbench and the upper bearing press-fitting mechanism. The upper bearing press-mounting mechanism consists of a movable plate, a guide sleeve, a fixed plate, a hydraulic cylinder and a bearing press-mounting mechanism, wherein the guide sleeve is fixedly connected with the bottom of the movable plate and sleeved on the optical axis; the end face of the top of the fixed plate is fixedly connected with a hydraulic cylinder, and an output shaft of the hydraulic cylinder sequentially penetrates through the fixed plate and the movable plate hole and is provided with a bearing clamping mechanism. The device not only can carry out automatic press-fitting to the bearing of two output shafts of differential mechanism simultaneously, guarantees that the assembly axiality is high, and differential mechanism two output shaft bearing radial deviation is little, and press-fitting efficiency is high, and the precision is high, and device automation integrated level is high.

Description

Automatic press-fitting device for differential bearing

Technical Field

The utility model relates to the technical field of automatic assembly, in particular to an automatic press-fitting device for a differential bearing.

Background

The differential mechanism is used for adjusting the rotation speed difference between two wheels of a vehicle, so that the two wheels can rotate at different speeds, and the problem caused by different driving paths of the inner and outer wheels during turning is solved. It is an important component of the driving system of the automobile and is one of the key factors for ensuring the running stability and safety of the automobile. The differential is typically comprised of gear sets, differential housings, differential locking mechanisms, and the like. In the running process, the differential mechanism can automatically adjust the rotation speed difference of the two wheels, so that the rotation speed of the outer side wheels can be faster than that of the inner side wheels, and the stability and the safety of the automobile in turning are ensured.

US6249969B1 discloses a differential automatic assembly method and apparatus for positioning a pair of side gears opposed to each other within a differential case along a predetermined one of three orthogonal axial directions with respect to a central portion of the differential case; inserting a pair of pinion gears and a pair of spherical washers into the differential case from a pair of openings formed in the differential case in another axial direction orthogonal to a predetermined one axial direction; axially aligning the pair of pinion gears and the pair of spherical washers along a remaining one of the three orthogonal axes on their respective central axes; thereafter, a shaft is directly inserted from the shaft hole of the differential case into shaft insertion holes formed at central axial portions of a pinion and a spherical washer, and after the spherical washer is aligned on the outside of the pinion, an internal collet is directly inserted into each shaft insertion hole from the inside of the pinion, thereby holding the pinion and the spherical washer as one unit; the gear teeth of the pinion and the side gears mesh with each other near the opening of the differential case.

In the prior art, in the differential bearing assembly process, the magnitude and stability of the pressing force need to be controlled, and the assembly is usually carried out manually, so that the pressing precision is low, and the efficiency is low.

Disclosure of Invention

Long-term production practices show that the pressure mounting of the differential bearing needs to control the size and stability of the pressure mounting force so as to ensure the quality and safety of the pressure mounting; the differential bearing press-fit all-in-one machine needs to have high reliability and stability to ensure long-time stable operation and efficient automated production. The technical problems to be solved in the automatic press-fitting process of the differential bearing are more, and the efficient, accurate and stable automatic press-fitting process can be realized by comprehensively utilizing technologies in multiple fields of machinery, electronics, control and the like.

In view of the above, the present utility model is directed to a differential bearing automatic press-fitting device including;

the automatic press-fitting device for the differential bearing comprises a workbench, a conveying belt mechanism, a bearing feeding mechanism, an upper bearing press-fitting mechanism and a lower bearing press-fitting mechanism, wherein the workbench is fixedly connected with the upper bearing press-fitting mechanism through an optical axis; the conveying belt mechanism and the bearing feeding mechanism can be fixedly arranged between the workbench and the upper bearing press-fitting mechanism;

the upper bearing press-fitting mechanism comprises a movable plate, a guide sleeve, a fixed plate, a hydraulic cylinder and a bearing press-fitting mechanism; the guide sleeve is fixedly connected with the bottom of the movable plate and sleeved on the optical axis; the end face of the top of the fixed plate is fixedly connected with the hydraulic cylinder, an output shaft of the hydraulic cylinder can sequentially pass through the fixed plate and the holes on the movable plate, and a bearing clamping mechanism is fixedly arranged on the output shaft of the hydraulic cylinder;

the lower bearing press-fitting mechanism comprises a tray and supporting rods, one ends of the supporting rods are connected with the workbench, and the other ends of the supporting rods are in butt joint with the tray.

In one embodiment, the tray is positionable on the conveyor belt mechanism by a limit mechanism.

In one embodiment, the bearing feeding mechanism comprises a first electric push rod and a fixed support plate, wherein the fixed support plate is fixedly arranged right above the conveying belt mechanism, and a limiting hole is formed in the fixed support plate.

In one embodiment, the tray is provided with a plurality of positioning holes.

In one embodiment, one end of the plurality of support rods, which is abutted with the tray, is sleeved with a transverse support block.

In one embodiment, the support rod sleeve is provided with a first return spring.

In one embodiment, a second return spring is coaxially arranged between the hydraulic cylinder output shaft and the bearing clamping mechanism.

In one embodiment, the bearing clamping mechanism is provided with a guide tube detachably connected with the bottom surface of the movable plate.

In one embodiment, the bearing clamping mechanism is circumferentially provided with a plurality of balls.

In one embodiment, the conveyor belt mechanism further comprises a double speed chain for conveying the trays, the double speed chain being driven by a drive motor.

The utility model discloses an automatic press-fitting device for a differential bearing, which structurally comprises a workbench, a conveying belt mechanism, a bearing feeding mechanism, an upper bearing press-fitting mechanism and a lower bearing press-fitting mechanism. The workbench is fixedly connected with the upper bearing press-fitting mechanism through an optical axis, and the conveying belt mechanism and the bearing feeding mechanism can be fixedly arranged between the workbench and the upper bearing press-fitting mechanism. The upper bearing press-mounting mechanism consists of a movable plate, a guide sleeve, a fixed plate, a hydraulic cylinder and a bearing press-mounting mechanism, wherein the guide sleeve is fixedly connected with the bottom of the movable plate and sleeved on the optical axis; the end face of the top of the fixed plate is fixedly connected with a hydraulic cylinder, and an output shaft of the hydraulic cylinder sequentially penetrates through the fixed plate and the movable plate hole and is provided with a bearing clamping mechanism. The lower bearing press-fitting mechanism comprises a tray and supporting rods, one ends of the supporting rods are connected with the workbench, and the other ends of the supporting rods are in butt joint with the tray. The device is characterized in that the lower bearing is sleeved on one output shaft of the differential mechanism to be installed, after the direction of the output shaft passes through the middle hole of the tray downwards and is positioned, the upper bearing is automatically pushed to the installation position through the bearing feeding mechanism, the upper bearing press-fitting mechanism rapidly applies downward force, the upper bearing is pressed onto the other output shaft of the differential mechanism, and meanwhile, the lower bearing and the differential mechanism output shaft are installed and matched, the device not only can automatically press-fit the bearings of the two output shafts of the differential mechanism at the same time, but also can ensure high assembly coaxiality, the radial deviation of the bearings of the two output shafts of the differential mechanism is small, the press-fitting efficiency is high, the precision is high, and the automatic integration degree of the device is high.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, illustrate and explain the utility model and are not to be construed as limiting the utility model. In the drawings:

FIG. 1 is a schematic view of an automatic press-fitting apparatus for a differential bearing according to an embodiment of the present utility model;

FIG. 2 is a schematic view of an upper bearing press-fitting mechanism in an automatic press-fitting device for differential bearings according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a bearing feeding mechanism in an automatic press-fitting device for differential bearings according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a lower bearing press-fitting mechanism in an automatic press-fitting device for differential bearings according to an embodiment of the present utility model;

fig. 5 is a schematic press-fitting view of an automatic press-fitting device for differential bearings according to an embodiment of the present utility model.

Reference numerals illustrate:

1 workbench 2 conveyer belt mechanism

3 wait to install differential mechanism work piece 4 bearing feed mechanism

5 transverse supporting block 6 tray

7 second electric push rod 8 first return spring

10 support bar of 9 times speed chain

11 fly leaf 12 uide bushing

13 fixing plate 14 optical axis

15 hydraulic cylinder 16 guide tube

17 bearing clamping mechanism 18 second return spring

19 ball 41 first electric push rod

42 limit holes 43 fixed support plate

61 locating hole 62 centre hole

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the utility model herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus; "fixed" or "fixedly attached" generally refers to a common mechanical attachment means, such as a threaded connection, welding or bonding, or the like.

In the existing differential bearing assembly process, the size and stability of the pressing force need to be controlled, and the assembly is usually carried out manually, so that the pressing precision is low, the efficiency is low, and the like. The utility model provides an automatic press-fitting device for a differential bearing, which is shown in fig. 1-5, and comprises a workbench 1, a conveyor belt mechanism 2, a bearing feeding mechanism 4, an upper bearing press-fitting mechanism and a lower bearing press-fitting mechanism, wherein the workbench 1 is fixedly connected with the upper bearing press-fitting mechanism through an optical axis 14; the conveying belt mechanism 2 and the bearing feeding mechanism 4 can be fixedly arranged between the workbench 1 and the upper bearing press-fitting mechanism;

the upper bearing press-fitting mechanism comprises a movable plate 11, a guide sleeve 12, a fixed plate 13 and a hydraulic cylinder 15; the guide sleeve 12 is fixedly connected with the bottom of the movable plate 11 and sleeved on the optical axis 14; the top end surface of the fixed plate 13 is fixedly connected with the hydraulic cylinder 15, an output shaft of the hydraulic cylinder 15 can sequentially pass through holes on the fixed plate 13 and the movable plate 11, and a bearing clamping mechanism 17 is fixedly arranged on the output shaft of the hydraulic cylinder 15;

the lower bearing press-fitting mechanism comprises a tray 6 and supporting rods 10, one ends of the supporting rods 10 are connected with the workbench 1, and the other ends of the supporting rods are abutted to the tray 6.

The automatic press-fitting device for the differential bearing provided by the utility model is characterized in that the lower bearing is sleeved on one output shaft of the differential workpiece 3 to be installed, the direction of the output shaft passes through the middle hole of the tray 6 downwards and is positioned, the upper bearing is automatically pushed to the installation position through the bearing feeding mechanism 4, the upper bearing is rapidly and downwards forced by the upper bearing press-fitting mechanism, the upper bearing is pressed into the other output shaft of the differential workpiece 3 to be installed, and meanwhile, the installation and the matching of the lower bearing and the differential output shaft are completed. The device not only can carry out automatic press-fitting to the bearing of two output shafts of differential mechanism simultaneously, can guarantee that the assembly axiality is high, and differential mechanism two output shaft bearing radial deviation is little, and press-fitting efficiency is high, and the precision is high, and device automation integrated level is high.

The differential is used for solving the problem of rotation speed difference between the left wheel and the right wheel under different running states, wherein the side gears are respectively connected with two half shafts, namely the output shafts, so that power is transmitted to the output shafts of the left wheel and the right wheel. Coaxiality of the two half shafts is very important during the assembly of the differential. The problem of abnormal sound, vibrations and the like can appear when the vehicle is driven due to the fact that coaxiality is insufficient, and meanwhile the service life of a vehicle transmission system can be influenced. The mounting positions of the two half shafts should be kept horizontal and stable as much as possible, and the coaxiality deficiency caused by the attitude deviation is avoided. One output shaft of the differential mechanism faces downwards and is supported by the tray 6, and the two output shafts are connected with the differential mechanism shell in interference fit by an upper bearing and a lower bearing respectively. Because of the interference fit connection, sufficient pressure is required to press the upper and lower bearings respectively between the output shaft and the differential housing. In order to better press fit the lower bearing, i.e. the bearing of the downward differential output shaft and the differential housing, the lower bearing is first sleeved on the output shaft, and when the differential is rotated to the mounted position, the output shaft passes through the central hole 62 in the tray 6, wherein the diameter of the central hole 62 is smaller than the diameter of the outer ring of the bearing and larger than the diameter of the inner ring of the bearing. When the upper bearing press-fitting mechanism rapidly applies downward force, the upper bearing is pressed into the other output shaft of the differential workpiece 3 to be installed, and meanwhile, the press-fitting of the lower bearing can be completed. Wherein the upper bearing is the bearing of the differential output shaft and the differential housing facing upwards after the differential work piece 3 to be mounted is fixed to the mounting position.

In order to better secure the differential work piece 3 to be mounted on the conveyor belt mechanism 2 during assembly, the pallet 6 can be positioned on the conveyor belt mechanism 2 by means of a limiting mechanism in a more preferred case of the utility model. For example, a hall sensor is arranged at the installation and positioning position, when the tray 6 passes through the hall sensor, a hall sensor signal is received, an electric rod fixed on the aluminum profile of the double-speed chain 9 ascends and passes through the positioning hole 61 of the tray 6, so that the tray 6 is blocked from continuously moving forwards to realize front positioning, and the positioning of the two sides of the differential mechanism tray is realized.

In order to automatically bring the bearing to the mounting position, the bearing clamping mechanism 17 of the upper bearing press-fitting mechanism is enabled to better clamp the bearing and press-fit the bearing to a prescribed position. In a more preferable aspect of the utility model, the bearing feeding mechanism 4 includes a first electric push rod 41 and a fixed support plate 43, the fixed support plate 43 is fixedly disposed right above the conveyor belt mechanism 2, and a limiting hole 42 is disposed in the fixed support plate 43. Wherein, the first electric push rod 41 is driven by the driving motor, and when the bearing is placed on the fixed support plate 43, the bearing is pushed to the position right above the installation position by the first electric push rod 41. In the upper bearing press-fitting mechanism, a hydraulic cylinder 15 drives an output shaft of the hydraulic cylinder to sequentially pass through holes in the fixed plate 13 and the movable plate 11. After the bearing clamping mechanism 17 at the head part of the output shaft of the hydraulic cylinder clamps the bearing to be mounted, the first electric push rod 41 is reset to the initial position, the hydraulic cylinder 15 continues to drive the bearing clamping mechanism 17 to vertically downwards, and the bearing is pressed between the output shaft of the workpiece 3 of the differential to be mounted, which faces upwards, and the differential shell through the limiting hole 42 on the fixed support plate 43.

In order to better position the tray 6, in a more preferred case of the utility model, said tray 6 is provided with a plurality of positioning holes 61.

When the hydraulic cylinder 15 continues to drive the bearing clamping mechanism 17 to apply force vertically downwards, in order to better support the tray 6, the tray 6 is kept on a horizontal plane, and in a more preferable case of the utility model, one end of the supporting rods 10, which is abutted against the tray 6, is sleeved with the transverse supporting block 5. In order to better support the pallet 6 and the differential work pieces 3 to be mounted thereon, in a more preferred case of the present utility model, as shown in fig. 5, a second electric push rod 7 is fixedly connected to the table 1 directly below the pallet 6, and the second electric push rod 7 is used for supporting the pallet 6.

In order to better enable the transverse supporting block 5 to return to the abutment position with the pallet 6, the supporting bar 10 is, in a more preferred case of the utility model, sheathed with a first return spring 8.

In order to better return the bearing clamping mechanism 17 to the original position after the hydraulic cylinder 15 continues to drive the bearing clamping mechanism 17 vertically downwards, in a more preferred case of the present utility model, a second return spring 18 is coaxially arranged between the output shaft of the hydraulic cylinder 15 and the bearing clamping mechanism 17.

In order to enable the bearing clamping mechanism 17 to apply force vertically downwards and reduce radial deflection and vibration during press fitting, in a more preferred aspect of the utility model, the bearing clamping mechanism 17 is provided with a guide tube 16, and the guide tube 16 is detachably connected with the bottom surface of the movable plate 11.

In order to better grip the bearing to be mounted and press-fit the bearing between the output shaft and the differential housing, in a more preferred case of the utility model, the bearing gripping mechanism 17 is provided with a plurality of balls 19 circumferentially.

In order to better bring the differential work pieces 3 to be mounted to the mounting position automatically, i.e. directly below the bearing clamping mechanism 17, the conveyor belt mechanism 2 further comprises, in a more preferred case of the utility model, a double speed chain 9 for conveying the pallet 6, the double speed chain 9 being driven by a drive motor.

It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present utility model is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present utility model. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present utility model.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In the several embodiments provided by the present utility model, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, such as the division of the units, merely a logical function division, and there may be additional manners of dividing the actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present utility model may be embodied essentially or in part or all of the technical solution contributing to the prior art or in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a mobile terminal, a server or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The automatic press-fitting device for the differential bearing is characterized by comprising a workbench (1), a conveying belt mechanism (2), a bearing feeding mechanism (4), an upper bearing press-fitting mechanism and a lower bearing press-fitting mechanism, wherein the workbench (1) is fixedly connected with the upper bearing press-fitting mechanism through an optical axis (14); the conveying belt mechanism (2) and the bearing feeding mechanism (4) can be fixedly arranged between the workbench (1) and the upper bearing press-fitting mechanism;

the upper bearing press-fitting mechanism comprises a movable plate (11), a guide sleeve (12), a fixed plate (13) and a hydraulic cylinder (15); the guide sleeve (12) is fixedly connected with the bottom of the movable plate (11) and sleeved on the optical axis (14); the top end face of the fixed plate (13) is fixedly connected with the hydraulic cylinder (15), an output shaft of the hydraulic cylinder (15) can sequentially penetrate through holes in the fixed plate (13) and the movable plate (11), and a bearing clamping mechanism (17) is fixedly arranged on the output shaft of the hydraulic cylinder (15);

the lower bearing press-fitting mechanism comprises a tray (6) and supporting rods (10), one ends of the supporting rods (10) are connected with the workbench (1), and the other ends of the supporting rods are abutted to the tray (6).

2. The automatic press-fitting device for differential bearings according to claim 1, characterized in that the pallet (6) is positionable on the conveyor belt mechanism (2) by a limit mechanism.

3. The automatic press-fitting device for differential bearings according to claim 1, wherein the bearing feeding mechanism (4) comprises a first electric push rod (41) and a fixed support plate (43), the fixed support plate (43) is fixedly arranged right above the conveying belt mechanism (2), and a limiting hole (42) is formed in the fixed support plate (43).

4. The automatic press-fitting device for differential bearings according to claim 1, characterized in that the tray (6) is provided with a plurality of positioning holes (61).

5. The automatic press-fitting device for differential bearings according to claim 1, wherein one end of the plurality of support rods (10) abutting against the pallet (6) is fitted with a lateral support block (5).

6. The automatic press-fitting device for differential bearings according to claim 5, characterized in that the support rod (10) is sleeved with a first return spring (8).

7. The automatic press-fitting device for differential bearings according to claim 1, characterized in that a second return spring (18) is coaxially arranged between the output shaft of the hydraulic cylinder (15) and the bearing clamping mechanism (17).

8. The automatic press-fitting device for differential bearings according to claim 7, characterized in that the bearing clamping mechanism (17) is provided with a guide tube (16), and the guide tube (16) is detachably connected to the bottom surface of the movable plate (11).

9. The automatic press-fit device for differential bearings according to claim 8, characterized in that the bearing clamping mechanism (17) is circumferentially provided with a plurality of balls (19).

10. The automatic press-fitting device of differential bearings according to any one of claims 1-9, characterized in that the conveyor belt mechanism (2) further comprises a double speed chain (9) for conveying the pallet (6), the double speed chain (9) being driven by a drive motor.