CN201265600Y - Straight tube-shaped short cylindrical roller bearing holder - Google Patents

Abstract

The utility model relates to a straight barrel type short cylindrical roller bearing retainer which comprises a roller installing hole. The bearing retainer is structurally characterized by adopting an integral and symmetrical structure, and the roller installing hole adopts a straight barrel type. The retainer is processed by adopting hard-drawing plates which are punched by a punching and bending mould. The retainer is designed into an integral type, is guided by self, is in a straight barrel shape and has no extrusive window beams, and the roller installing hole is provided with a circumferential bulge and is convenient for a roller to move and lubricate. The utility model has optimal and compact integral structure, high precision and low manufacturing cost, improves the rotating precision and the service life of a roller bearing and ensures the lower vibration and the low noise of the roller bearing.

Description

Straight tubular cylindrical roller bearing retainer

Technical field:

The utility model relates to a kind of straight tubular cylindrical roller bearing retainer.

Background technique:

Roller bearing is because the cross section is little, the bearing capacity height, be out of shape little, be suitable for high load, high speed operation, low vibration and quiet occasion, this products radial bearing capacity is big simultaneously, and the roller bus is linear with raceway and contacts, be applicable to the load that withstands shocks, life-span is long, the precision height, thereby be widely used in each high-end field.At present domesticly still adopt traditional bootstrap retainer structure usually, referring to Fig. 1 ~ Fig. 6, the shortcoming of this retainer structure existence is:

1. traditional bootstrap retainer structure is owing to be split processing, its back-up ring 16 and column 9 are that the depended on pressure machine carries out cold riveting and becomes one, so this structure retainer strength deficiency, be not enough to guarantee the bearing capacity and the fatigue resistance of finished product bearing, be difficult to satisfy needed working strength in present high-end field and specified bearing capacity more.

2. traditional bootstrap retainer structure adopts split-type structural, so the error that the size of retainer inside, deviation, form and position tolerance, roughness etc. are brought is difficult to eliminate, the size scattered error of each batch is also bigger, therefore can not guarantee the assembly precision and the running accuracy of finished product bearing.

3. traditional bootstrap retainer structure, owing to be to adopt split-type structural, complicate fabrication process, and cost of material is very big, middle sorting cost is also big, therefore cause the unnecessary consumption in raw material and the die manufacture, cause cost of material, technology cost and people, machine cost too high, be difficult for increasing economic efficiency.

Summary of the invention:

Technical problem to be solved in the utility model is to overcome existing above-mentioned deficiency in the prior art, and provides a kind of optimized integral structure, compactness, retainer precision height, the straight tubular cylindrical roller bearing retainer of low cost of manufacture.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: this straight tubular cylindrical roller bearing retainer, comprise the roller mounting hole, and structural feature is that retainer adopts whole symplex structure, the roller mounting hole adopts straight tubular.

The utility model retainer adopts cold drawn sheet material to process by the bending ram die stamping.

The utility model is designed to integrated type, bootstrap, and straight tubular, retainer does not have the window of protrusion beam, and the roller mounting hole is provided with circumferential projection and is convenient to roller motion and lubricated.

The utlity model has following advantage and effect: optimized integral structure, compactness, retainer precision height, manufacture cost reduces, and has improved roller bearing running accuracy and working life, has guaranteed the low vibration and the low noise of roller bearing simultaneously.

Description of drawings:

Fig. 1 is a prior art bootstrap retainer structural representation.

Fig. 2 is the A-A view of Fig. 1.

Fig. 3 is the view of column shown in Figure 2.

Fig. 4 is the side view of Fig. 3.

Fig. 5 is the view of back-up ring shown in Figure 1.

Fig. 6 is the A-A view of Fig. 5.

Fig. 7 is the utility model embodiment's a structural representation.

Fig. 8 is the B-B view of Fig. 7.

Fig. 9 is that the C of Fig. 8 is to view.

Embodiment:

Referring to Fig. 7～Fig. 9, the straight tubular cylindrical roller bearing of the utility model embodiment retainer comprises roller mounting hole 1, and retainer adopts whole symplex structure, and roller mounting hole 1 adopts straight tubular.

The utility model embodiment retainer adopts 08# or the cold drawn sheet material of 10# to process by the bending ram die stamping.

The utility model is designed to integrated type, bootstrap, and straight tubular, retainer does not have the window of protrusion beam, and roller mounting hole 1 is provided with circumferential projection 11 and is convenient to roller motion and lubricated, and circumferentially the angle of the hypotenuse of projection 11 and central shaft is 30 degree.The retainer associative perception is strong, can realize self-locking, satisfies the bootstrap mode.Above characteristics make present embodiment retainer optimized integral structure, compactness, have improved the bulk strength of retainer.

The utility model embodiment's design feature makes the precision of whole retainer improve greatly.Be easy to reach and control because make the pull and stretch and the press tool precision of retainer, therefore: 1. outer, internal diameter of retainer and pull and stretch stiffening rib are out of shape little; 2. the retainer equal portions can guarantee; 3. the fenestra deviation is little.Therefore the dimensional accuracy of retainer key position has just had assurance, has improved the assembly precision and the running accuracy of finished product bearing.

The utility model embodiment is owing to adopted novel retainer structure, thereby make pressing cage cost in the mill reduce greatly, specific as follows: 1. cost of material, owing to adopted novel retainer structure, so as long as 08# or the cold drawn sheet material of 10# of 1.5～2mm just can satisfy, and the mould of making retainer is all very durable, has saved great deal of raw materials; 2. the technology cost owing to adopted the retainer structure of novel outer guiding and self-locking, makes improve more than 3 times the working life of retainer; 3. human cost owing to adopted novel retainer structure, makes the assembly process of finished product bearing reduce, and human cost is saved.

The utility model utilizes overall structure to replace the branch body structure, utilize outer guiding to replace bootstrap, changed traditional retainer structure, self intensity, bearing capacity, the craft precision of retainer have been improved, thereby limit speed, bearing capacity and the fatigue resistance of the roller bearing made from the utility model product have been improved, can guarantee low vibration, the quiet and good smooth operation of roller bearing under high rotating speed, reach the usage requirement of various occasions.

Claims (3)

1, a kind of straight tubular cylindrical roller bearing retainer comprises the roller mounting hole, and it is characterized in that: retainer adopts whole symplex structure, and the roller mounting hole adopts straight tubular.

2, retainer according to claim 1 is characterized in that: the roller mounting hole is provided with circumferential projection.

3, retainer according to claim 1 is characterized in that: retainer adopts cold drawn sheet material.

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