CN210423427U

CN210423427U - Main shaft bearing configuration structure of machining center

Info

Publication number: CN210423427U
Application number: CN201920629676.5U
Authority: CN
Inventors: 刘学冠; 段小玲; 段小东
Original assignee: Chengdu Bicheng Cnc Machinery Co Ltd
Current assignee: Chengdu Bicheng Cnc Machinery Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-04-28
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses a machining center's main shaft bearing configuration structure, including the inner circle, the outside cover of inner circle is equipped with the outer lane, installs a plurality of balls between outer lane and the inner circle, and the outside of ball is equipped with the holder, and the inboard of holder is equipped with the backup ring, installs a plurality of rotors between backup ring and the ball. The utility model relates to a machining center's main shaft bearing configuration structure, through the rotation range of holder restriction ball, when the ball takes place to deflect, the backup ring supports the ball, the backup ring receives the extrusion force of ball and extrudees the resilient pad board through the connecting plate to this plays the cushioning effect to the ball, reduces the deflection of ball, is in stable state when guaranteeing the ball rotation, stability when so improving the inner circle and rotating, and through the smooth and easy nature of rotor when improving the ball rotation.

Description

Main shaft bearing configuration structure of machining center

Technical Field

The utility model relates to a bearing configuration field, in particular to machining center's main shaft bearing configuration structure.

Background

The main shaft rolling bearing is reasonably configured according to the working precision, rigidity, temperature rise and structural complexity of a main shaft component, the precision of a main transmission system can be improved, and the main shaft rolling bearing is supported by the rolling bearing and has a plurality of different configuration forms.

When the bearing is configured, a common bearing consists of an inner ring, an outer ring and a rolling body, the service life of the bearing is defined by the number of revolutions (or hours of working at a certain rotating speed), the bearing has the same appearance under the same working condition, the actual service life is greatly different, when the bearing works and runs for a long time, the bearing ring or the rolling body is subjected to preliminary fatigue damage, the wall layer of the bearing ring or the outer wall of the rolling body is peeled off or damaged, the rolling body is easy to deflect during rotation and does not rotate in the original rotating range, so that the bearing ring is shaken, a main shaft is unstable during rotation on the bearing, and the processing efficiency and the quality are influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a machining center's main shaft bearing configuration structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the main shaft bearing configuration structure of the machining center comprises an inner ring, an outer ring is sleeved outside the inner ring, a plurality of balls are mounted between the outer ring and the inner ring, a retainer is arranged outside the balls, a supporting ring is arranged on the inner side of the retainer, and a plurality of rotors are mounted between the supporting ring and the balls.

Preferably, the two sides of the supporting ring are both fixedly provided with connecting plates, one side of the retainer is provided with a groove opposite to the connecting plates, the groove walls of the two sides of the groove are both fixedly provided with fixing rods, and one ends of the two fixing rods are respectively in sliding connection with sliding grooves formed in the two sides of the connecting plates.

Preferably, both sides of one end of the connecting plate are fixedly connected with elastic base plates, and one ends of the elastic base plates are fixedly connected with the groove walls of the grooves.

Preferably, both sides of the retainer are provided with dust covers, both sides of the outer wall of the inner ring and both sides of the inner wall of the outer ring are provided with notches, and both ends of each dust cover are fixedly connected with the groove walls of the two notches on the same side.

Preferably, a plurality of uniformly distributed lugs are fixedly mounted on the inner wall of the inner ring.

Preferably, a plurality of heat dissipation holes are formed in the inner wall of the dustproof cover.

The utility model discloses a technological effect and advantage:

1. the utility model limits the rotation range of the ball by the retainer, utilizes the bearing ring to support the ball, ensures the ball to be in a stable state when rotating, thereby ensuring the stability when the inner ring and the outer ring rotate, and ensures the smoothness when the ball rotates by the rotor;

2. the utility model has the advantages that the dustproof cover plays a dustproof role on the ball, ensures the smoothness of the ball during rotation, plays a heat radiation role between the inner ring and the outer ring through the heat radiation hole, and ensures the normal operation of the bearing;

3. the utility model discloses an elastic backing plate plays the cushioning effect to the holder to this stability when guaranteeing the ball rotation.

Drawings

Fig. 1 is a schematic front structural view of the present invention;

FIG. 2 is a schematic view of the enlarged structure of the part A of the present invention;

FIG. 3 is a schematic view of the enlarged structure of the part B of the present invention;

FIG. 4 is a schematic side view of the retainer of the present invention;

fig. 5 is a schematic side view of the present invention.

In the figure: 1. an inner ring; 2. an outer ring; 3. a ball bearing; 4. a holder; 5. a backup ring; 6. a rotor; 7. a connecting plate; 8. grooving; 9. fixing the rod; 10. an elastic backing plate; 11. a dust cover; 12. and (4) heat dissipation holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a main shaft bearing configuration structure of a processing center as shown in figures 1-5, which comprises an inner ring 1, an outer ring 2 is sleeved outside the inner ring 1, a plurality of balls 3 are arranged between the outer ring 2 and the inner ring 1, a retainer 4 is arranged outside the balls 3, a supporting ring 5 is arranged inside the retainer 4, a plurality of rotors 6 are arranged between the supporting ring 5 and the balls 3, connecting plates 7 are fixedly arranged on both sides of the supporting ring 5, a slot 8 opposite to the connecting plate 7 is arranged on one side of the retainer 4, fixing rods 9 are fixedly arranged on both side slot walls of the slot 8, one end of each fixing rod 9 is respectively connected with a sliding slot arranged on both sides of the connecting plate 7 in a sliding manner, an elastic cushion plate 10 is fixedly connected on both sides of one end of the connecting plate 7, one end of the elastic cushion plate 10 is fixedly connected with the slot wall of the slot 8, when the, ball 3 extrudees backup ring 5 through rotor 6, connecting plate 7 on the backup ring 5 is toward 8 inside removals in fluting, the equilibrium when dead lever 9 through 8 both sides cell wall installations in fluting guarantees that connecting plate 7 removes, connecting plate 7 extrudees elastic backing plate 10 and plays the cushioning effect to backup

ring

5, 3 stability when moving of ball is guaranteed through rotor 6 to backup ring 5, guarantee ball 3 and stabilize the operation in retainer 4, stability when improving inner circle 1 rotation with this, work efficiency and quality when guaranteeing machining center processing work piece, improve the smooth and easy nature when ball 3 rotates through rotor 6 when playing the supporting role to ball 3.

Both sides of holder 4 all are equipped with shield 11, the opening groove has all been seted up with the both sides of two opening grooves with one side to the both sides of 1 outer wall of inner circle and the both sides of 2 inner walls of outer lane, shield 11's both ends respectively with the cell wall fixed connection in two opening grooves of one side, a plurality of louvres 12 have been seted up to shield 11's inner wall, cover 11 through shield and hide external dust, prevent the lubricating oil contact on dust and the ball 3, frictional force when increasing ball 3 and rotating its surface and bearing ring wall contact, make 3 superficial wearing and tearing of ball, influence the normal work of bearing, reduce the life of bearing, utilize louvre 12 to dispel the heat between outer lane 2 and the inner circle 1 simultaneously, prevent that the high temperature from making lubricating oil melt, influence smooth and easy nature when ball 3.

A plurality of uniformly distributed lugs are fixedly arranged on the inner wall of the inner ring 1, the friction force of the surface of the spindle when the surface of the spindle is in contact with the inner wall of the inner ring 1 is increased through the lugs, and the stability of the spindle when the spindle is in contact with the inner ring 1 is increased.

This practical theory of operation:

during operation, one end of the main shaft is embedded into the inner ring 1, the inner ring 1 is driven to rotate by the rotation of the main shaft, and the sliding friction is replaced by the rolling friction of the inner ring 1 through the balls 3;

when the bearing operates for a long time, preliminary fatigue damage occurs between the outer wall of the inner ring 1 and the inner wall of the outer ring 2 and the balls 3, namely the outer wall of the inner ring 1 and the inner wall of the outer ring 2 or the outer walls of the balls 3 are peeled off or damaged, the balls 3 are easy to deflect when rotating, at the moment, when the balls 3 deflect towards the two sides of the inner ring 1, the balls 3 extrude the bearing ring 5 through the rotor 6, the bearing ring 5 is stressed to extrude the elastic backing plate 10 through the connecting plate 7, at the moment, the elastic backing plate 10 is in an extrusion state, so that the balls 3 are buffered, the balls 3 are prevented from extruding the bearing ring 5 through the rotor 6, the surface of the balls 3 is subjected to secondary wear, the normal use of the balls 3 is influenced, the inner ring 1 shakes, and the stability of a main shaft during operation;

when the ball 3 rotates, heat is generated, and the heat can be dissipated between the outer ring 2 and the inner ring 1 through the heat dissipation holes 12 in the dustproof cover 11, so that the service life of the bearing is prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A spindle bearing arrangement structure of a machining center includes an inner ring (1), characterized in that: the outer cover of inner circle (1) is equipped with outer lane (2), install a plurality of balls (3) between outer lane (2) and inner circle (1), the outside of ball (3) is equipped with holder (4), the inboard of holder (4) is equipped with backup ring (5), install a plurality of rotors (6) between backup ring (5) and ball (3).

2. The main shaft bearing arrangement structure of a machining center according to claim 1, characterized in that: the supporting ring is characterized in that connecting plates (7) are fixedly mounted on two sides of the supporting ring (5), a groove (8) opposite to the connecting plates (7) in position is formed in one side of the retainer (4), fixing rods (9) are fixedly arranged on groove walls on two sides of the groove (8), and one ends of the fixing rods (9) are respectively connected with sliding grooves formed in two sides of the connecting plates (7) in a sliding mode.

3. The main shaft bearing arrangement structure of a machining center according to claim 2, characterized in that: and both sides of one end of the connecting plate (7) are fixedly connected with elastic base plates (10), and one ends of the elastic base plates (10) are fixedly connected with the groove walls of the grooves (8).

4. The main shaft bearing arrangement structure of a machining center according to claim 1, characterized in that: the two sides of the retainer (4) are provided with dust covers (11), the two sides of the outer wall of the inner ring (1) and the two sides of the inner wall of the outer ring (2) are provided with grooves, and the two ends of each dust cover (11) are fixedly connected with the groove walls of the two grooves on the same side.

5. The main shaft bearing arrangement structure of a machining center according to claim 1, characterized in that: the inner wall of the inner ring (1) is fixedly provided with a plurality of uniformly distributed lugs.

6. The main shaft bearing arrangement structure of a machining center according to claim 4, characterized in that: the inner wall of the dustproof cover (11) is provided with a plurality of radiating holes (12).