SE458948B - HAILAREER BEFORE DOUBLE ROLLER BODY STOCK AS WELL AS MANUFACTURING THIS HAILAREER - Google Patents

Description

458 948 10 l5 20 25 30 35 2 axially extending bridges connecting the changes with legs on each of the substantially U-shaped transverse bridges, which legs extend radially outward from the changes; and an axially center ring.

Furthermore, according to the invention, a method of the above-mentioned kind has been provided, which method is characterized in that arcuate portions are simultaneously formed in each edge portion of the flat metal strip; that the transverse bridges are designed for guiding and retaining the roller bodies; that the flat metal strip is formed into a U-shaped cross section; cutting a certain length of this strip to form a U-shaped strip with two end portions; that this web length is rolled into an annular holder; and that the two end portions are connected to each other.

Preferably, an axial, central band is wrapped around the holder and connected to the transverse bridges.

The invention and its many advantages are described in more detail below with reference to the accompanying drawings, in which Fig. 1 shows in cross section a half of a preferred embodiment according to the invention, Fig. 2 shows in a similar view another preferred embodiment according to invention, Fig. 3 shows in a fragmentary plan view a flat metal strip with designed pockets but before it is formed into a U-profile shape and rolled according to a third preferred embodiment, Fig. 4 shows in a similar plan view the metal strip in Fig. 3 after the formation to U profile and rolling and welding, Fig. 5 shows in a fragmentary plan view a flat metal strip before forming into a U-profile and the rolling according to a further preferred embodiment of the invention, Fig. 6 shows in a similar plan view the metal strip in Fig. 5 after forming to U-profile shape as well as rolling and welding to an annular holder, Fig. 7 shows in cross section a half of another preferred embodiment according to the invention , for which a separate strip has been used, which is welded to the transverse bridges in the holder, Fig. 8 shows on a larger scale a fragmentary plan view of the holder in Fig. 7, Fig. 9 illustrates a 10 15 20 25 30 35 458 948 Fig. 3 of the operations for manufacturing a holder from a flat strip material blank according to a further preferred embodiment, Figs. 10 and 11 illustrate in similar views as Fig. 9 two subsequent operations, Fig. 12 shows a cross section taken along the line 12-12 in Fig. 11 Fig. 13 illustrates the finishing phase of the rolling of the U-section formed metal strip into the shape of a ring and shows how a separate strip is welded to this ring, Fig. 14 shows on a larger scale a portion of a bearing having a holder of the stroke shown in Fig. 13, Fig. 15 shows a cross section taken along the line 15-15 in Fig. 14 with running rings and the roller bodies removed, Figs. 16 and 17 show a section of the holder in plan view seen from above and below in the means by arrows 16-16 and 17-17 indicated rich Figs. and Fig. 18 show a portion of the bearing with the inner race in a 90 ”flared position in the holder shown in Figs. 13-17 during assembly.

In the different figures, the same details have the same reference numerals.

An embodiment comprises, with reference to the drawings and in particular to Fig. 1, an inner running ring 10 and an outer running ring 12. The inside of the outer running ring 12 has a concave curved profile shape and the inner running ring 10 has two concave formed for bearing tracks 16, 18. annular surfaces which are inclined relative to the center axis of the bearing and separated by an annular ridge 44. A set of spherical rollers 20, 22 abut against each bearing race 16, 18 and also against the bearing surface 14 of the outer race ring 14. The geometric axes of the rollers 20, 22 forms an angle with the geometric axis of the spherical roller body bearing.

The holder comprises a pair of axially spaced changes 24, 26, which are connected to each other by a plurality of circumferentially the bridges 30 (such a bridge is shown in Fig. 1). An axially centered ring 32 is formed integrally with the rest of the holder. A first series of circumferentially spaced pockets, axially extending 458 948 10 15 20 25 30 35 4 28 is defined by one change 24, the bridges 30 and the central ring 32 and a second series of circumferentially spaced pockets 31 bounded by the second change 26, the bridges 30 and the central ring 32.

The transverse bridges are substantially U-shaped with angled legs 36, 38, which extend radially outwards from the respective change 24, 26 and are connected to each other by means of arcuate body portions. The pockets 28, 31 formed in the U-profile each extend axially towards the changes 24, 26 of the holder and radially inwards. Each change 24, 26 is controlled by a flange 40 and 42, respectively, of the inner race 10.

If the changes 24, 26 here are the same inner diameter in their entire circumference, their inner diameter must for mounting reasons be equal to or greater than the outer diameter of the axially central, annular ridge 44. The control of the changes 24, 26 is achieved as mentioned by means of the respective flange 40, 42 on the inner race 10.

In the embodiment shown in Fig. 2, the inner race 45 does not have any edge flanges. To control the changes 24, 26, non-metallic annular elements 46, 48 are mounted on the respective changes 24, 26. These non-metallic elements 46, 48 may be machined, cast or made by extrusion and are applied to the edges of the changes 24, 26 with the smallest diameter during snap engagement.

The holders shown in Figures 1 and 2 are made of a flat metal strip. The heels are made by punching or otherwise for forming a plurality of heels (pockets) in the flat metal strip. The transverse bridges thus formed are designed for guiding and retaining the rollers. The flat metal strip is then formed into a strip with a U-profile shape. A certain length is cut from the strip, which is rolled and then welded or otherwise connected at the ends to the annular shape of the container in Fig. 1 or 2. By rolling the flat but profile-shaped strip to 458 948 In the form of a ring, its central part 32, which is in the form of a rail, is stretched and the changes 24, 26 are compressed. a flat metal substance. One way to solve this problem is to use the embodiment shown in Figs. 3 and 4.

In Fig. 3, which is a fragmentary plan view of a flat metal strip which has been punched to form the holes for the pockets, the center rail 32 is still formed integrally with the holder otherwise but is cut through to form a coupling consisting of a tongue and a groove, the tongue S0 at one circumferential end of the rail 32 being brought into engagement with the groove 52, which is formed in the other end portion of the rail 32. Such a heavy / groove coupling allows the rail 32 to move freely in the circumferential direction when forming to the diameter of the holder. When the strip is formed to the diameter of the holder as in Figs. 4, 24, partly the punch and its edge portions 54, 56 are formed into changes 26, the tongue 50 is resistance welded in the groove 52 to give the center rail 32 stability, partly to prevent said portions from deforming in use.

In the embodiment shown in Figs. 5 and 6, where Fig. 5 is a fragmentary view of a flat strip before forming, the tongues 55, 57 shown are formed in the middle rail 32 by punching. One tongue extends along the side of the side of the other tongue and the ends of the tongues abut against the shoulder surface 59 and the shoulder surface 61. Fig. 6 shows the blank in Fig. 5 after forming to the diameter of the holder and bending the edge portions 54, 56 inwardly to form the changes. 24, 26. each tongue 55 and 57, respectively, extends along a portion of the side of the other tongue and is resistance welded thereto to make the center rail 32 rigid.

In the preferred embodiment shown in Figs. 7 and 8, the transverse bridges 60 extend axially from one change 24 to the other change 26. 458 948 10 15 20 25 30 35 6 In this embodiment, the center rail is not formed in one piece with the holder otherwise without being formed by a separate metal strip 62, which is connected to the bridges 60 by welding or any other suitable connection method.

The separate belt 62 has a plurality of circumferentially spaced, radially inwardly directed projections 58. The projections 58 extend inwardly between the rollers 20, 22 and serve to guide the holder on the back 44 of the inner race 10. It should be noted that the ends 58 of the projections 58 reach it. the back 44 of the inner running ring 10.

Figures 14-18 show a further preferred embodiment of the invention. The holder is shown in Fig. 14 placed in the annular space between the inner race 63 and the outer race 64. The holder has pockets for guiding and retaining one row of rollers 65 and the rollers in the other row (not shown) are placed in pockets opposite the pockets of the rollers 65.

The holder comprises, as most clearly shown in Figs. 15-17, a pair of axially spaced changes 66, 68. Each transverse bridge 70 extends from one change 66 to the other 68. A separate metal strip 72 is supported axially centered on the bridges 70. The change 66 has alternating straight and arcuate portions 74 and 76, respectively (see Fig. 14) and the change 68 having the same shape. The inner race 63 (Fig. 18) has a similar cross-sectional shape to the inner race 45 shown in Fig. 2, including its projecting ridge 44, which has a larger outer diameter than the inner diameter of the changes 66, 68. However, the diameter at the rounded peaks of the arcuate portions 76 is larger than the diameter of the back 44 of the inner race 44. Although the inner diameter of the portions of the holder designated 74 by the holder is smaller than the outer diameter of the back of the inner race, the inner race the ring is inserted into the holder simply by placing the inner race 6% with its geometric axis perpendicular to the geometric axis of the holder and so that its back is placed opposite two diametrically located arcuate pairs 10 10 20 20 25 30 35. 458 948 7 tier 76, after which the inner race can be slid between them and thus into the holder, and finally the inner race is pivoted to a coaxial position relative to the holder.

From Fig. 15 it can be seen that each bridge 70 has substantially U-section with the angled portions 80, 82 directed radially outwards from the straight portions 74 of the changes 66, 68.

The bridges 70 are provided with radially displaced portions 84, 86 at points which are centered axially between the respective change 66, 68 and the belt 72. As shown in Fig. 16, the radially displaced portions 84, 86 have pairs in opposite directions in the circumferentially directed projections 86 , 90 and 92, 94, respectively. The end surfaces 96, 98, 100, 102 of the projections 88, 90, 92, 94 are oblique and converge in pairs radially inwards. The rollers are circumferentially guided by the surfaces at each side of the projections 80, 90, and 92, 94, respectively, and are prevented by the paired conical surfaces 96, 98, and 100, 102 from falling radially outwards. The rollers are held in place in the axial direction by means of respective changes 66, 68 and the belt 72. At opposite ends, each transverse bridge is formed with press recesses 104, 105 and 106, 107, respectively. In the "U-forming" of the holder, i.e. when the flat metal blank is imparted profile shape, the tensile stress in the transverse bridges at the outside is reduced by bending and for the same reason the compressive stress at their inside is reduced.

The method of manufacturing the holder intended for double-row roller body bearings shown in Figs. 14-17 is shown in Figs. 9-13. A blank in the form of a flat metal strip 110 has been punched to form the pockets. In addition, the arcuate portions 76 have been formed at the side edge portions of the metal strip. Thereafter, the projections 88, 90, 92, 94 shown in Fig. 10 for retaining the rollers are formed.

In Figs. 11 and 12, the metal strip 110 is U-shaped.

As shown in Fig. 12, the transverse bridges have been formed to provide the radially displaced portions 84, 86 and the tapered portions, such as the portions 96, 100 shown in Fig. 12. Finally, it is rolled to U-section. shaped the element into an annular shape, which is shown in Fig. 13, and is welded or otherwise attached to the strip 72 on the circumferentially spaced transverse bridges.

The axially and centrally located separate straps, such as the strap 72, can be placed either on the outside and / or on the inside of the transverse bridges and for reinforcement the strap may have overlapping portions.

The invention has been described and illustrated in the form of a holder which holds the roller bodies against movement outwards out of the holder, but the invention further comprises cage-shaped holders which prevent both outward and inward movement from the holder, and holders which form spacers which keep the roller bodies separate. but lets them fall out, if the spacer is removed from the bearing.

Claims (3)

10 15 20 25 30 458 948 PATENT REQUIREMENTS Spherical, double-row roller body bearing, comprising inner and outer race (63, 64) with opposite, curved bearing races, the inner race (63) having two curved bearing races separated by an annular back portion (44 ) and which are inclined relative to the center axis of the bearing, and a rigid, integral holder made of a flat metal blank (110) and having two axially spaced changes (66, 68): (66, 68) have circumferentially spaced portions (76), the inner diameter of which is larger than the smaller inner diameter (74), characterized in that each change of the rest of the change, the diameter of the annular back portion (44) being smaller than the larger interior of the change. - diameter (76) and the smaller inner diameter (74) of the change guide the holder on the inner race (63); substantially U-shaped, circumferentially spaced transverse bridges (70) extending axially and connecting the changes (66, 68) to legs (80, 82) on each of the substantially U-shaped transverse bridges (70), which legs extend radially outward from the changes (66, 68); and an axially center ring (72). 2. A method of manufacturing from a flat metal blank a holder for double-row roller body bearings, wherein several pockets are formed in a flat metal strip (110) and separated by transverse bridges (70), characterized in that arcuate portions (76) are simultaneously formed in each edge portion of the planar metal strip (ll0); that the transverse bridges (70) are designed for guiding and retaining the roller bodies (65); that the flat metal strip (110) is formed into a U-shaped cross section; cutting off a certain length of this band to form a U-shaped band with two end portions (66, 68); that this web length is rolled into an annular holder; and that the two end portions (66, 68) are connected to each other. I 458 948 10 A method according to claim 2, characterized in that an axial, central band (72) is wrapped around the holder and connected to the soap bridges (70).