CN2128679Y

CN2128679Y - Cylindrical roller bearing cage

Info

Publication number: CN2128679Y
Application number: CN 92218102
Authority: CN
Inventors: 宋天宝; 王迅
Original assignee: SUZHOU BEARING FACTORY
Current assignee: SUZHOU BEARING FACTORY
Priority date: 1992-06-13
Filing date: 1992-06-13
Publication date: 1993-03-24
Anticipated expiration: 2002-06-13

Abstract

The utility model discloses a short cylindrical roller bearing cage, comprising a cylindric circumference and two annular lateral margins which are inward extended from the both ends of the cylindric circumference. The cylindric circumference is provided with a plurality of pocket holes along the circumference, and a plurality of convex locking points is arranged along the circumferential direction of the inner side of the annular lateral margin, which is characterized in that a notch with 'T'-shaped cross section is formed by the cylindric circumference and the two annular which are inward extended from the both ends of the cylindric circumference. The short cylindrical roller bearing cage is characterized in that the bending of the beam of the short cylindrical roller bearing cage is small when locking points are pressed, and the overlapping of the short cylindrical roller bearing cage and the flange of a bearing outer ring is large, which increases the motion stability of the cylindrical roller bearing cage; the actual falling amount of the cylindrical rollers of the short cylindrical roller bearing cage is small, which improves the performance of the assembly of a bearing inner ring.

Description

Cylindrical roller bearing cage

The utility model belongs to the bearing class in the mechanical engineering, relates to a kind of retainer, especially the cylindrical roller bearing retainer.

Along with cylindrical roller bearing to reinforced design transition, cylindrical roller bearing retainer structural design has become one of focus that many production firms and researcher be concerned about.Luoyang bearing research institute as one of important R﹠D institution of China's bearing industry, the technological scheme that middle-size and small-size cylindrical roller bearing adopts flute profile retainer (structure as shown in Figure 1) was just proposed in 1984, this scheme has played positive effect to addressing the above problem undoubtedly, and has obtained good effect.But in actual application, still have following deficiency:＜1 〉. because of flute profile retainer ring-type lateral margin and tubular periphery axis out of plumb, cause retainer behind compacting lock point, actual the fall amount of cylindrical roller in retainer is bigger than the theory amount of falling, thereby when the bearing user is used, the assembling difficulty of bearing inner race;＜2 〉. because the width A and the bearing outer ring rib of this flute profile retainer tubular periphery (being retainer) are overlapping too small, add the retainer external diameter and the bearing outer ring rib diameter differs bigger, thereby cause the free fall amount of retainer in bearing bigger, aggravated the amount of falling of cylindrical roller, retainer effectively guides inadequately when making bearing begin to rotate, and causes the retainer motion unstable;＜3 〉. the transition structure of the tubular periphery of this flute profile retainer and two ring-type lateral margin joints, when retainer compacting lock point, cause the bending of retainer crossbeam easily, directly influence the stability of motions of bearing.

The purpose of this utility model provides a kind of cylinder roller bearing retainer with T-slot structure, and this retainer can effectively reduce the poor of actual the fall amount of cylindrical roller in retainer and the theory amount of falling behind compacting lock point; Retainer can effectively guide and when the filtration of the tubular periphery of retainer and two ring-type lateral margins guarantees retainer compacting lock point preferably when bearing begins to rotate, retainer crossbeam amount of bow is less, thereby improves the assembly performance of bearing, the rotational stabilization of raising retainer.

For achieving the above object, the technical solution adopted in the utility model is: a kind of cylinder roller bearing retainer, by the tubular periphery with have from tubular periphery two ends respectively in the tubular periphery ring-type lateral margin of extended two corresponding layouts and form, the tubular periphery has several uniform pocket holes along circumference, corresponding with the crossbeam on the tubular periphery, along ring-type lateral margin inside circumference direction the lock point of several projectioies is arranged, the tubular periphery is "T"-shaped structure with the cross section that two ring-type lateral margins that extend internally out respectively from its two ends constitute the groove flute profile.

Described ring-type lateral margin and tubular periphery axis normal are best.

The extension joint of described tubular periphery and two ring-type lateral margins is that rounding off is best.

Because above-mentioned solution is improved to the retainer of T-slot structure with the retainer of former bathtub construction, makes to the utlity model has following advantage:

＜1 〉. the retainer of this T-slot structure, because the axis normal of ring-type lateral margin and tubular periphery, behind the compacting lock point, the lock point changes with the actual contact point of cylindrical roller, the difference that actual the fall amount of cylindrical roller in retainer and theory are fallen reduces, thereby has improved the assembly performance of bearing inner race.

＜2 〉. because of the retainer of T-slot structure, increase, thereby when making bearing begin to rotate, retainer can effectively guide the stability that has guaranteed the retainer motion with the lap of bearing outer ring rib.

＜3 〉. because the width A of the tubular periphery of T-slot structure retainer is the rounding off structure greater than width B between the two ring-type lateral margins outside and tubular periphery with two ring-type lateral margins extension joint, when retainer compacting lock point, in the deformed set on the transition structure, make retainer crossbeam amount of bow less, thereby guaranteed the correct guiding of retainer, improved stability of rotation cylindrical roller.

Below in conjunction with drawings and Examples the utility model is further described:

Accompanying drawing 1 is the plan view of former flute profile cylindrical roller bearing retainer;

Accompanying drawing 2 is the left view of former flute profile cylindrical roller bearing retainer Fig. 1;

Accompanying drawing 3 is the plan view of the utility model cylindrical roller bearing retainer;

Accompanying drawing 4 is the left view of the utility model retainer Fig. 2;

Wherein: 1. tubular periphery; 2. ring-type lateral margin; 3. pocket hole; 4. crossbeam; 5. lock point; A. tubular periphery (retainer) width; B. distance between outside the two ring-type lateral margins; C. distance between two ring-type lateral margin inboards; D. retainer external diameter; O. the angle of ring-type lateral margin and retainer radial plane.

Shown in Fig. 1,2, the ring-type lateral margin of former flute profile cylindrical roller bearing retainer and the angle theta of retainer radial plane are 2.5 °～7 °.

By Fig. 3, shown in 4, a kind of cylinder roller bearing retainer, by tubular periphery 1 with have from tubular periphery 1 two ends respectively in tubular periphery 1 the ring-type lateral margin 2 of extended two corresponding layouts and form, two ring-type lateral margins 2 and tubular periphery 1 axis normal, the extension joint of tubular periphery 1 and two ring-type lateral margins 2 is a rounding off, tubular periphery 1 is "T"-shaped structure with the cross section of the groove flute profile that two ring-type lateral margins 2 constitute that extends internally out respectively from its two ends, tubular periphery 1 is generally identical with ring-type lateral margin 2 wall thickness, in order to guarantee that retainer and bearing outer ring rib effectively guide, tubular periphery (retainer) width A is according to the model bearing little 0.2～6mm of bearing outer ring width on year-on-year basis not, in order to make retainer when point is locked in compacting, retainer crossbeam 4 amount of bow are less, narrower than tubular periphery (retainer) width between the two ring-type lateral margins outside apart from B, between two ring-type lateral margin inboards apart from C, bearing according to different model, for used short columnar roller length adds 0.05～0.8mm, in order to reduce the amount of falling of bearing roller, the retainer outer diameter D according to the different model bearing than the little 0.2～2mm of bearing outer ring rib diameter, tubular periphery 1 has several uniform pocket holes 3 along circumference, adorn a short columnar roller in each pocket hole 3, corresponding with the crossbeam 4 on the tubular periphery 1, the lock point 5 of several projectioies is arranged along ring-type lateral margin 2 inside circumference directions.

Above-mentioned two ring-type lateral margins 2 and tubular periphery 1 axis also can out of plumb, and the ring-type lateral margin 2 and the angle of retainer radial plane are controlled at 0 °～4 ° scope.Other form also can be used in the extension joint of above-mentioned tubular periphery 1 and two ring-type lateral margins 2.

The structure of other parts is conspicuous to those of ordinary skill, repeats no more.

Claims

1, a kind of cylinder roller bearing retainer, by tubular periphery 1 with have from tubular periphery 1 two ends respectively in tubular periphery 1 the ring-type lateral margin 2 of extended two corresponding layouts and form, tubular periphery 1 has several uniform pocket holes 3 along circumference, corresponding with the crossbeam 4 on the tubular periphery 1, along ring-type lateral margin 2 inside circumference directions the lock point 5 of several projectioies is arranged, it is characterized in that: tubular periphery 1 is "T"-shaped structure with the cross section of the groove flute profile that two ring-type lateral margins 2 constitute that extends internally out respectively from its two ends.

2, retainer according to claim 1 is characterized in that: ring-type lateral margin 2 and tubular periphery 1 axis normal.

3, retainer according to claim 1 and 2 is characterized in that: the extension joint of tubular periphery 1 and two ring-type lateral margins 2 is a rounding off.