CN208246693U - Roller bearing dustproof cover riveting die - Google Patents

Abstract

The utility model relates to a kind of roller bearing dustproof cover riveting dies, including die ontology and the molding boss being arranged on die ontology end face, being molded boss includes integrally formed first boss and second boss, the outer end face of second boss and die ontology leans, the outer end face of first boss and second boss leans, end face where second boss excircle is recessed inwardly to form circular groove, the junction of end face outwardly convex formation arc cam where first boss excircle, circular groove and arc cam has step.The roller bearing dustproof cover riveting die can play the role of local riveting stress, dustproof cover is entirely wrapped up simultaneously, extruding force is also generated to the upper surface of dustproof cover, the problem of thus dustproof cover upper surface will not being caused to heave because of surrounding stress, the dustproof cover that riveting comes out in this way will not loosen, and improve the dust-proof effect and service life of bearing.

Description

Roller bearing dustproof cover riveting die

Technical field:

The utility model relates to bearing installation apparatus field more particularly to a kind of roller bearing dustproof cover riveting dies.

Background technique:

In the assembling process of roller bearing, needs for dustproof cover to be pressed on the outer end face of bearing outer ring, play bearing Dustproof effect, be typically all in the prior art be pressed using riveting die, as shown in Figure 1, including die ontology 1 and Molding boss 2 on 1 end face of die ontology is set, and end face where 2 excircle of molding boss arches upward to form protrusion outward Portion 3 is more gentle tapered surface between lug boss 3 and die ontology 1, however the lug boss 3 of the structure can be because in press fitting The problem of causing dustproof cover upper surface to be heaved for surrounding stress, cause press fitting and it is insecure, be also easy to produce and loosen, influence axis The service life held.

Utility model content:

The purpose of this utility model is in view of the drawbacks of the prior art, to provide a kind of simple structure, uniform force, press fitting jail Gu, the roller bearing dustproof cover riveting die of bearing dust-proof effect can be improved.

The utility model is achieved by the following technical solution: a kind of roller bearing dustproof cover riveting die, including mould Tool ontology and the molding boss that is arranged on die ontology end face, the molding boss include integrally formed first boss and the The outer end face of two boss, the second boss and die ontology leans, the outer end face phase of the first boss and second boss Against end face where the second boss excircle is recessed inwardly to form circular groove, where the first boss excircle The junction of end face outwardly convex formation arc cam, the circular groove and arc cam has step.

In one preferred embodiment of the utility model, the radius of circle where the circular groove is 2mm, described arc-shaped The radius of circle where boss is 5mm；The height of the circular groove is 4.5-5mm, and the height of the arc cam is 7- 7.5mm；The distance of center circle of the short transverse of circle where the circular groove and arc cam is 4-4.5mm.

The beneficial effects of the utility model are: the roller bearing dustproof cover riveting die is convex by special first of design The structure of platform and second boss can play the role of local riveting stress, while dustproof cover entirely being wrapped up, to dust-proof The problem of upper surface of lid also generates extruding force, thus dustproof cover upper surface will not be caused to heave because of surrounding stress, this The dustproof cover that sample riveting comes out will not loosen, and improve the dust-proof effect and service life of bearing.

Detailed description of the invention:

Fig. 1 is the structural schematic diagram of roller bearing dustproof cover riveting die in the prior art；

Fig. 2 is the structural schematic diagram of the utility model roller bearing dustproof cover riveting die；

Fig. 3 is the partial enlargement diagram of part A in Fig. 2；

In figure: 1. die ontologies, 2. molding boss, 3. lug bosses, 4. die ontologies, 5. molding boss, 51. second is convex Platform, 52. first boss, 53. circular grooves, 54. arc cams, 55. steps.

Specific embodiment:

The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model It can be easier to be understood by those skilled in the art with feature, to make apparent specific boundary to the protection scope of the utility model It is fixed.Direction term that the utility model is previously mentioned, such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom" etc., It is only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the utility model, rather than to Limit the utility model.

As shown in Figure 2 and Figure 3, a kind of roller bearing dustproof cover riveting die, including die ontology 4 and setting are in mold sheet Molding boss 5 on 4 end face of body, the molding boss 5 include integrally formed first boss 52 and second boss 51, and described the The outer end face of two boss 51 and die ontology 4 leans, and the outer end face of the first boss 52 and second boss 51 leans, institute End face where stating 51 excircle of second boss is recessed inwardly to form circular groove 53, end where 52 excircle of first boss It faces out and convexes to form arc cam 54, the junction of the circular groove 53 and arc cam 54 has step 55.

Lug boss in compared with the existing technology, the utility model devise a circle between lug boss and die ontology 4 Recessed portion, i.e. circular groove 53, while a step 55 is formed between circular groove 53 and arc cam 54, without It is direct horizontal transition or arc transition, which can make dustproof cover in press fitting, and bottom end is at step 55 to arc-shaped recessed It hooks and falls into slot 53, to ensure that bite force.

By many experiments, it has been found that the cooperation corresponding to the size of arc cam 54 needs of circular groove 53.Make To be preferred, the radius of circle where the circular groove 53 is 2mm, and the radius of circle is 5mm where the arc cam 54；Institute The height (distance from die ontology 4 outer end face to step 55) for stating circular groove 53 is 4.5-5mm, described arc-shaped convex The height (distance from from step 55 to 52 outer end face of first boss) of platform 54 is 7-7.5mm；The circular groove 53 and circle The distance of center circle of the short transverse of circle where arc boss 54 is 4-4.5mm.

Compared with prior art, which passes through the special first boss 52 of design and the The structure of two boss 51 can play the role of local riveting stress, while dustproof cover entirely being wrapped up, to dustproof cover The problem of upper surface also generates extruding force, thus dustproof cover upper surface will not be caused to heave because of surrounding stress, such riveting The dustproof cover pressed out will not loosen, and improve the dust-proof effect and service life of bearing.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The protection scope of the utility model.

Claims (4)

1. a kind of roller bearing dustproof cover riveting die, convex including die ontology and the molding being arranged on die ontology end face Platform, it is characterised in that: the molding boss includes integrally formed first boss and second boss, the second boss and mold The outer end face of ontology leans, and the outer end face of the first boss and second boss leans, the second boss excircle institute It is recessed inwardly to form circular groove in end face, end face outwardly convex is formed arc-shaped convex where the first boss excircle The junction of platform, the circular groove and arc cam has step.

2. roller bearing dustproof cover riveting die according to claim 1, it is characterised in that: where the circular groove Round radius is 2mm, and the radius of circle is 5mm where the arc cam.

3. roller bearing dustproof cover riveting die according to claim 2, it is characterised in that: the height of the circular groove Degree is 4.5-5mm, and the height of the arc cam is 7-7.5mm.

4. roller bearing dustproof cover riveting die according to claim 3, it is characterised in that: the circular groove and circle The distance of center circle of the short transverse of circle where arc boss is 4-4.5mm.