CN103273309A

CN103273309A - Center-adjusting device for pressing and assembling bearing

Info

Publication number: CN103273309A
Application number: CN2013101882495A
Authority: CN
Inventors: 解永彬
Original assignee: Hefei Kaibang Motor Co Ltd
Current assignee: Hefei Kaibang Motor Co Ltd
Priority date: 2013-05-20
Filing date: 2013-05-20
Publication date: 2013-09-04
Anticipated expiration: 2033-05-20
Also published as: CN103273309B

Abstract

The invention relates to the field of motor rotors, in particular to a center-adjusting device for pressing and assembling a bearing. The center-adjusting device for pressing and assembling the bearing comprises a supporting frame and a support which is used for accommodating the bearing to be assembled. A hole through which a rotating shaft to be assembled can pass is formed in the support, and a center-adjusting bearing assembly is arranged between the support and the supporting frame. An inner ring and an outer ring of the center-adjusting bearing assembly are connected with the support and the supporting frame respectively, the inner ring and the outer ring of the center-adjusting bearing assembly can mutually float, the axis of the inner ring and the axis of the outer ring can not be overlapped, and therefore the support connected with the outer ring can float relative to the supporting frame. When the bearing is pressed and assembled, the rotating shaft of a rotor penetrates through an inner hole of the bearing and then extends into the hole in the support in a hanging mode. When the axis of the bearing and the axis of the rotating shaft are not located in the same straight line, the support can swing in a deviation mode along with the extending of the rotating shaft until the axis of the bearing and the axis of the rotating shaft are overlapped. Therefore, the center can be automatically adjusted when the bearing is pressed and assembled, the concentricity of the bearing and the rotating shaft is guaranteed, and the quality of the rotator is improved.

Description

The aligning device of pressing bearing

Technical field

The present invention relates to the rotor field, particularly the aligning device of pressing bearing.

Background technology

Need to install bearing in the rotating shaft of rotor, be directly to be press fit into bearing in the rotating shaft at present, do not carry out aligning before installing, all can there be tolerance in the size itself of adding rotating shaft and bearing, basically can't guarantee the concentricity of rotating shaft and bearing inner race, have to be strong with bearing press mounting in rotating shaft, in the assembling process if the axis of rotating shaft and bearing not on same straight line, installation can cause rotating shaft and bearing after the assembling to be subjected to stress deformation like this, causes the increase of rotor noise, when noise is excessive, bearing need be removed, press-fit again, waste a large amount of bearings, increase production cost and also increased workload simultaneously, reduced operating efficiency.

Summary of the invention

The aligning device that the purpose of this invention is to provide a kind of pressing bearing that can the self-adjustable bearing axle center.

For achieving the above object, the present invention has adopted following technical scheme: a kind of aligning device of pressing bearing, comprise support and be used for to place the bearing of bearing to be assembled, offer the hole of passing through for rotating shaft to be assembled on this bearing, the self-aligning bearing assembly is set between bearing and the support, and the Internal and external cycle of self-aligning bearing assembly links to each other with support respectively at bearing.

Owing to adopt above technical scheme, can float mutually between the inner ring of self-aligning bearing assembly and the outer ring, both axis can not overlap, thereby the bearing that connects the outer ring relatively support take place unsteady, during pressing bearing, the endoporus rear overhang that rotor shaft passes bearing extends in the hole of bearing, if the axis of the axis of bearing and rotating shaft is not on same straight line the time, toilet can be along with the swing that deflects of stretching into of rotating shaft, dead in line until bearing and rotating shaft, thereby the automatic aligning when having realized pressing bearing has guaranteed the concentricity of bearing and rotating shaft to have improved rotor quality.

Description of drawings

Fig. 1 is perspective view of the present invention;

Fig. 2 is the explosive view of Fig. 1;

Fig. 3 is the front view of Fig. 1;

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5 is the cutaway view under rocker piece and the rotor confined state;

Fig. 6 is the structural representation of fixed cover;

Fig. 7 is the structural representation of rocker piece.

The specific embodiment

As Fig. 1-3, a kind of aligning device of pressing bearing, comprise support 10 and be used for to place the bearing 20 of bearing to be assembled, offer the hole of passing through for rotating shaft to be assembled 21 on this bearing 20, between bearing 20 and the support 10 self-aligning bearing assembly 30 is set, the Internal and external cycle of self-aligning bearing assembly 30 links to each other with support 10 respectively at bearing 20.Can take place between the inner ring of self-aligning bearing assembly 30 and the outer ring to float mutually, both axis can not overlap, the axis that is to say the outer ring axis of inner ring relatively deflects, thereby the bearing 20 that connects the outer ring relatively support 10 deflect unsteadyly, be the activity cooperation between the two.During pressing bearing, the endoporus rear overhang that rotor shaft passes bearing to be assembled extends in the hole 21 of bearing 20, if the axis of the axis of bearing to be assembled and rotating shaft to be assembled is not on same straight line the time, rotating shaft applies active force must for hole 21, this active force makes the axis in hole 21 draw close towards shaft axis, thereby driving bearing 20 deflects, owing to can float by relative inner ring with the outer ring of bearing 20, that is to say and to allow bearing 20 to deflect, therefore bearing 20 just can be along with the swing that deflects of stretching into of rotating shaft, dead in line until bearing to be assembled and rotating shaft to be assembled, thereby the automatic aligning when having realized pressing bearing, guarantee the concentricity of bearing and rotating shaft, improved rotor quality.

Shown in Fig. 5 and 7, the inwall of the outer ring 31 of described self-aligning bearing assembly 30 is that taper hole or step are poroid, the outer surface of the inner ring 32 of self-aligning bearing assembly 30 is that frustum is planar, between described outer ring 31 and the inner ring 32 ball 33 is set, described inner ring 32 large end faces abut on the end face 11 of support 10.

The internal perisporium of the outer ring 31 of described self-aligning bearing assembly 30 is stepped hole 311, and the large aperture section is positioned near on the side end face on the support 10, described ball 33 and inner ring 32 all place the large aperture section of stepped hole 311, the outer setting of described outer ring 31 has collar, collar and support 10 are connected, the zone that surrounds between collar and the support 10 holds self-aligning bearing assembly 30, between described outer ring 31 and the collar flying height is arranged, between the end face 11 of described outer ring 31 and support 10 flying height is arranged, bearing 20 is fixed on the side end face of outer ring 31 away from support 10.Small-bore Duan Yukong 21 connections and two pore sizes of stepped hole 311 are the same, be provided with the gap between the vertex of a cone 321 of inner ring 32 and the step surface of stepped hole 311, ball 33 is evenly arranged at interval along the outer surface of inner ring 32, ball 33 is resisted against on the step surface of stepped hole 311,322 abut on the support 10 at the bottom of the awl of inner ring 32, the effect of collar is similar to bearing block, exchange the outer ring 31 of axle bearing assembly 30 and play basic constraint and positioning action, and approximate location is bestowed constraint and is allowed that again it suitably floats.

Shown in Fig. 4 and 6, described collar comprises first and

second collar

41,42, one side end face of first collar 41 directly links to each other with support 10, the opposite side end face of first collar 41 links to each other with second collar 42, it is the stepped hole structure of annular groove shape that the inner chamber that first collar 41 and second collar 42 surround constitutes the stage casing, the periphery wall of described outer ring 31 is provided with annular boss 312, and this annular boss 312 is positioned at the annular groove in first collar 41 and second collar, 42 stage casings.In other words, first collar 41 among the present invention is for offering the annulus of shoulder hole, its big opening end is identical with second collar, 42 diameters near the path size of second collar, 42, the first collars 41, and the heavy caliber section of first collar 41 has just formed the annular groove that is used for holding annular boss 312 so.Outer ring 31 is thin ends and thick middle ladder platform, what be positioned at the middle part is annular boss 312, the diameter of annular boss 312 is slightly less than the diameter of annular groove among the present invention, and outer ring 31 can be rocked in the chamber that first collar 41 and second collar 42 surround and can axial rotation.

As Fig. 1, described bearing 20 is semi-cylindrical, and the one end is fixed on the outer ring 31, and the other end is on the state of suspending and this end that suspends and offers the groove 22 of establishing bearing for card, the dead in line in the axis of this groove 22 and hole 21, hole 21 is communicated with the stepped hole 311 of outer ring 31 on the bearing 20.Bearing is stuck in the groove 22, because bearing 20 is semi-cylindrical in configuration, so bearing top vacancy stays the operating space for the manipulator of pick-and-place bearing to be assembled.

Shown in Fig. 3 and 4, offer mounting hole 23 on the described bearing 20, the hole length direction of this mounting hole 23 is consistent with the axis direction in hole 21, and described second collar 42 is provided with circular blind hole corresponding with mounting hole 23 positions and that size is coincide, and straight pin 24 runs through mounting hole 23 and circular blind hole.24 pairs of mounting holes of straight pin 23 carry out spacing, thereby realize spacing to bearing 20, avoid bearing 20 motion amplitudes excessive.

Claims

1. the aligning device of a pressing bearing, it is characterized in that: comprise support (10) and be used for to place the bearing (20) of bearing to be assembled, offer the hole of passing through for rotating shaft to be assembled (21) on this bearing (20), between bearing (20) and the support (10) self-aligning bearing assembly (30) is set, the Internal and external cycle of self-aligning bearing assembly (30) links to each other with support (10) respectively at bearing (20).

2. the aligning device of pressing bearing according to claim 1, it is characterized in that: the inwall of the outer ring (31) of described self-aligning bearing assembly (30) is that taper hole or step are poroid, the outer surface of the inner ring (32) of self-aligning bearing assembly (30) is that frustum is planar, between described outer ring (31) and the inner ring (32) ball (33) is set, described inner ring (32) large end face abuts on the end face (11) of support (10).

3. the aligning device of pressing bearing according to claim 2, it is characterized in that: the internal perisporium of the outer ring (31) of described self-aligning bearing assembly (30) is stepped hole (311), and the large aperture section is positioned near on the last side end face of support (10), described ball (33) and inner ring (32) all place the large aperture section of stepped hole (311), the outer setting of described outer ring (31) has collar, collar and support (10) are connected, the zone that surrounds between collar and the support (10) holds self-aligning bearing assembly (30), between described outer ring (31) and the collar flying height is arranged, between the end face (11) of described outer ring (31) and support (10) flying height is arranged, bearing (20) is fixed on the side end face of outer ring (31) away from support (10).

4. the aligning device of pressing bearing according to claim 3, it is characterized in that: described collar comprises first, two collars (41,42), one side end face of first collar (41) directly links to each other with support (10), the opposite side end face of first collar (41) links to each other with second collar (42), it is the stepped hole structure of annular groove shape that the inner chamber that first collar (41) and second collar (42) surround constitutes the stage casing, the periphery wall of described outer ring (31) is provided with annular boss (312), and this annular boss (312) is positioned at the annular groove in first collar (41) and second collar (42) stage casing.

5. the aligning device of pressing bearing according to claim 3, it is characterized in that: described bearing (20) is semi-cylindrical, the one end is fixed on the outer ring (31), the other end is on the state of suspending and this end that suspends and offers the groove (22) of establishing bearing for card, the dead in line of the axis of this groove (22) and hole (21), bearing (20) are gone up hole (21) and are communicated with the stepped hole (311) of outer ring (31).

6. the aligning device of pressing bearing according to claim 4, it is characterized in that: offer mounting hole (23) on the described bearing (20), the hole length direction of this mounting hole (23) is consistent with the axis direction of hole (21), described second collar (42) is provided with circular blind hole corresponding with mounting hole (23) position and that size is coincide, and straight pin (24) runs through mounting hole (23) and circular blind hole.