CN101216079B - Bearing production method - Google Patents

Abstract

The invention relates to a bearing manufacturing method. The bearing manufactured by the method comprises an outer race, rolling elements and an inner race. The rolling elements are evenly arranged between the outer race and the inner race. The outer race of the bearing is stamped so that the end face of the outer race bends inwards in the radial direction to form a stop collar and to hold up the rolling elements from moving in the axial direction; the rolling elements are matched with and connected with the inner race and the outer race in a sliding way. Both ends of the rolling elements are arranged in the stop collar formed by bending the outer race inwards, respectively. When the inner race of the bearing rotates with an axis, the rolling elements move around the axis along the stop collar formed by bending the outer race of the bearing inwards. As both ends of the rolling elements of the bearing provided by the invention are movably arranged, the rolling elements can rotate around the axial lead of the bearing so that no clearance exists between the rolling elements. In addition, the rolling elements are positioned primarily by the radial force produced when the outer race of the bearing is bent inwards to form the stop collar through axial holding-up of the stop collar, thus effectively improving the carrying capacity and the use characteristics of the bearing and prolonging the service life of the bearing.

Description

A kind of Production of bearing method

Technical field

The present invention relates to a kind of production method of bearing.

Background technique

Bearing is widely used in the mechanical field supporting to axle, and the rotation that it can leading axle also can be born the part that axle is gone up idle running; Be made up of outer ring, rolling element, retainer and inner ring as the one of which, the effect of inner ring is to match with axle, and rotates together with the axis; The outer ring effect is to match with bearing support; Play a supportive role, thereby generally can be connected with rolling element in equidistance punching on the retainer and through screw in the production rolling element is evenly distributed between inner ring and the outer ring, the structure of hence one can see that bearing is feasible in use; Running up of axle drives the bearing rotation; And retainer makes that with direct contact of bearing support retainer is easy to be worn, and the abrasion deformation of retainer will cause each the rolling element centre of motion that is connected on it and deviation appears in the axle center or rolling element comes off from retainer, thereby influencing bearing normally uses; Influence greatly the working life of bearing; This kind mode also causes between each rolling element and has the gap in addition, and promptly the negligible amounts of rolling element makes the load carrying capacity of bearing and usability that great limitation arranged.

Summary of the invention

The present invention is directed to the deficiency of existing technology, a kind of Production of bearing method is provided, the bearing that adopts this method to produce is reached being arranged at the location of rolling element between the bearing enclose through the shape that changes the traditional bearing outer ring.

Production of bearing method of the present invention, its concrete steps are following:

(1) back-up ring is positioned over the end in the bearing outer ring, said back-up ring is the hollow round platform of a T shape, and the narrow end of back-up ring is towards the inside of outer ring, and wide end is towards the outside of outer ring;

(2) evenly put rolling element along the outer surface of the narrow end of back-up ring, and the end face of rolling element contacts with the wide end internal surface of back-up ring;

(3) the described mode of the other end in bearing outer ring such as step (1) is placed another back-up ring;

(4) will carry out axial punch by the semi-finished product of step (3) gained; The big end of back-up ring that is positioned over the bearing outer ring two ends will make the hollow round platform back-up ring of this T shape become a circular groove back-up ring because of the effect footpath of impact force is inwardly curved; Rolling element can move along this circular groove around axis; The also directly inside bending in bearing outer ring two ends becomes a baffle ring simultaneously; And the curved radial force that is produced makes the formed outside diameter of cylinder drive fit of bearing outer ring and rolling element be connected in the bearing outer ring, and the internal diameter of the inwardly curved baffle ring that forms in said bearing outer ring footpath is greater than the internal diameter of cylinder that rolling element forms;

(5) bearing inner race that is used is positioned over the inside of cylinder that rolling element forms, and this bearing inner race and rolling element roll and are connected.

The resulting bearing of Production of bearing method according to the present invention; Following beneficial effect is arranged: 1. the present invention realizes that through punching press the curved radial force that is produced makes it be connected with the external diameter drive fit of evenly putting the cylinder that rolling element forms in it in the bearing outer ring both ends of the surface; Interior simultaneously curved formed baffle ring can be tackled rolling element and move axially, and has simplified in the traditional mode of production to be distributed in the technology between inner ring and the outer ring by means of being connected with rolling element just rolling element to be located uniformly in equidistance punching on the retainer and through screw, in addition; In the bearing using process; Be connected because the two ends activity of rolling element is positioned in the baffle ring that bending becomes in the bearing outer ring end face and the rolling topic is rolled with bearing inner race, therefore, it also rotates around the baffle ring internal surface of axis along bending one-tenth in the bearing outer ring end face when axle rotate to adopt the rolling element of the bearing that the method for the invention produces; Then have basically no the slit between the rolling element; And well known, bearing roller quantity is one of factor that directly influences bearing load ability and usability, therefore; The bearing that adopts method of the present invention to produce effectively raises the load carrying capacity of bearing, and improves its usability; In addition; In use; Because this bearing that the method for the invention is produced does not have retainer, thereby thereby avoided much causing rolling element to become flexible even come off causing the disabled accident of bearing to take place because of the retainer distortion, promptly effectively prolonged the working life of bearing.2. the bearing that adopts the method for the invention to produce also is provided with a pair of T shape back-up ring in the outer ring; The narrow end of T shape back-up ring is placed relatively; The two ends of rolling element then are positioned in the back-up ring, and after the punching press, bending becomes baffle ring and outer ring to be connected with the formed outside diameter of cylinder drive fit of rolling element in the bearing outer ring; And the big end of T shape back-up ring is also curved and make this T shape back-up ring become a circular groove back-up ring in radially; Then the two ends of rolling element promptly are positioned in this circular groove, so the annulus that bending becomes in outer ring interception is this circular groove back-up ring rather than rolling element one by one, so the adding back-up ring can further ensure the location of rolling element in bearing; Prevent it from coming off and influence the normal use of bearing, the working life of promptly further effectively improving bearing.

Description of drawings

Fig. 1 utilizes the method for the invention to produce the structural representation of product;

Fig. 2 utilizes the method for the invention to produce the stereogram of product;

Fig. 3 is a back-up ring perspective view before the punching press not in the method for the invention;

Fig. 4 is a back-up ring perspective view after the punching press in the method for the invention;

Fig. 5 is the plan view of back-up ring after the punching press in the method for the invention;

Fig. 6 adopts the method for the invention to produce the rolling element structural representation of product

Wherein, narrow end 21 circlip grooves of wide end 23 back-up rings of outer ring body 1 outer ring baffle ring 11 back-up rings 2 back-up rings 22 inner rings 3 rolling elements 4

Embodiment

Below will combine accompanying drawing that technological scheme of the present invention is explained.

The bearing that utilizes this method of the invention to provide; As depicted in figs. 1 and 2, this bearing comprises outer ring 1, back-up ring 2, inner ring 3 and rolling element 4, and rolling element evenly is thrown between bearing outer ring 1 and the inner ring 3; All inside bending becomes the axially movable outer ring of interception rolling element baffle ring 11 along its footpath at the two ends of said bearing outer ring 1; And the internal diameter of this outer ring baffle ring 11 is greater than the internal diameter of rolling element 4 formed virtual cylinders, and said rolling element 4 rolls with bearing inner race 3 and outer ring 1 and is connected, and said rolling element 4 two ends contact with said outer ring baffle ring 11 internal surfaces; When bearing inner race 3 rotates along with axle, rolling element 4 will move along bearing outer ring baffle ring 11 internal surfaces around axle.The structural representation of said rolling element 4 is as shown in Figure 6, and the concrete mode of production of the present invention is following: the hollow round platform back-up ring 2 of a pair of T shape is placed at the two ends that at two ends are uncovered initial outer ring 1 cylindraceous, and its perspective view is as shown in Figure 3; The narrow end 21 of said back-up ring 2 is placed inwardly relatively, the then opposing outwardly placement of wide end 23, and; In narrow end 21 of two back-up rings and 1 formed gap, outer ring, evenly put rolling element 4 along the exterior edge face of the narrow end 21 of this back-up ring; The both ends of the surface of rolling element 4 contact with wide end 23 interior edge faces of this two back-up ring respectively, then, above-mentioned gained semi-finished product are carried out axial punch; Promptly these half-finished both ends of the surface are granted relative axial impact force simultaneously; Then owing to the effect of this impact force, the wide end 23 of said back-up ring will radially interiorly be bent and make back-up ring 2 become a circular groove, and the perspective view of this circular groove back-up ring 2 is as shown in Figure 4; Plan view is then as shown in Figure 5; Simultaneously the two ends of outer ring 1 also can be radially in bending become a baffle ring 11 to tackle moving axially of back-up ring 4, and the interior curved radial force that is produced makes the internal diameter of outer ring 1 be connected with the external diameter drive fit of rolling element 4 formed annulus, inner ring 3 is positioned in the rolling element 4 formed cylinders at last again; And inner ring 3 is connected with rolling element 4 rollings; Promptly when inner ring 3 rotates along with axle, rolling element 4 will move along back-up ring 2 circular grooves around axle, again power passed to bearing outer ring 1 simultaneously.Back-up ring 2 is not radially stressing in addition; Then its effect just prevents when the inner ring 3 that will be connected with axle takes out from bearing, can cause the axially locating of rolling element unstable in whole bearing structure; Cause coming off of rolling element 4; Moving axially of promptly anti-Sealing shield ring 2 and interior rolling element 4 thereof is if therefore the interior edge face radial width of outer ring baffle ring 11 then can no longer be provided with this back-up ring 2 if enough can tackle moving axially of rolling element 4.Simultaneously by on can know; The axial dimension of its outer ring 1 of this bearing provided by the invention should grow a little than the axial dimension of rolling element; And this length enough lets bending in the two ends of outer ring 1 become one can tackle the baffle ring that the back-up ring 2 established in the outer ring 1 skids off; In addition, this length can not be oversize, and it must guarantee the internal diameter of the internal diameter of the baffle ring that outer ring 1 becomes because of bending in impacting greater than rolling element 4 annulus that forms.

Claims (1)

1. method of producing bearing is characterized in that:

(1) back-up ring is positioned over the end in the bearing outer ring, said back-up ring is the hollow round platform of a T shape, and the narrow end of back-up ring is placed towards the inside of outer ring, and wide end is then towards the outside of outer ring;

(2) evenly put rolling element along the outer surface of the narrow end of back-up ring, and the end face of rolling element contacts with the wide end internal surface of back-up ring;

(3) the described mode of the other end in bearing outer ring such as step (1) is placed another back-up ring;

(4) will carry out axial punch by the semi-finished product of step (3) gained; The big end of back-up ring that is positioned over the bearing outer ring two ends will make the hollow round platform back-up ring of this T shape become a circular groove back-up ring because of the effect footpath of impact force is inwardly curved; Rolling element can move along this circular groove around axis; The also directly inside bending in bearing outer ring two ends becomes a baffle ring simultaneously; And the curved radial force that is produced makes the formed outside diameter of cylinder drive fit of bearing outer ring and rolling element be connected in the bearing outer ring, and the internal diameter of the inwardly curved baffle ring that forms in said bearing outer ring footpath is greater than the internal diameter of cylinder that rolling element forms;

(5) bearing inner race that is used is positioned over the inside of cylinder that rolling element forms, and makes said bearing inner race and rolling element roll to be connected.

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