CN108825659A - A method of manufacture is used for the inner ring of tapered roller bearing - Google Patents

Abstract

A kind of method of inner ring the invention discloses manufacture for tapered roller bearing, wherein inner ring includes raceway part and built-in edge part, and this approach includes the following steps：Inner ring blank is provided, wherein inner ring blank includes unfinished raceway part, and unfinished built-in edge part, wherein unfinished built-in edge part has the outer diameter bigger than unfinished raceway part, and wherein inner ring blank has through-hole, inner ring blank is molded into inner ring by squeezing in main forming step, unfinished built-in edge is partially converted to built-in edge part and unfinished raceway is partially converted to raceway part, and wherein inner ring is formed without any cutting with its final profile.A kind of method of manufacture of the invention for the inner ring of tapered roller bearing, this method can be carried out cost-effectively, but also the quality of inner ring can be made to reach sufficiently high quality simultaneously.

Description

A method of manufacture is used for the inner ring of tapered roller bearing

Technical field

A kind of method of inner ring the present invention relates to manufacture for tapered roller bearing.

Background technique

Tapered roller bearing allows radial load and axial load to deflect by bearing.In tapered roller bearing generally includes Circle, outer ring and the multiple taper rollers being arranged between inner ring and outer ring.Taper roller is presented as the term of a conical form, The supporting surface of conical surface formation rolling element.One edge is set usually on inner ring, for guiding conical roller.This makes The bearing ring for obtaining tapered roller bearing is complicated.Prior art discloses a kind of corresponding tapered roller bearings, and wherein circular cone rolls The inner ring of sub- bearing includes an edge, axially guides taper roller.The ring of tapered roller bearing is usually by solid half Finished product production, especially separates or cut.United States Patent (USP) US2880495A1 discloses a kind of for producing taper roller axis The hybrid technique of carrier ring, wherein bearing ring body is to be generated in the first manufacturing step by flat ring, especially raceway be by It removes material in second manufacture and is formed.

Technical solution

A kind of method of inner ring the invention mainly solves the technical problem of providing manufacture for tapered roller bearing, Middle inner ring includes raceway part and built-in edge part, which is characterized in that this approach includes the following steps：Inner ring blank is provided, Wherein inner ring blank includes unfinished raceway part, and unfinished built-in edge part, wherein unfinished fixed edge With the outer diameter bigger than unfinished raceway part, and wherein, inner ring blank has through-hole for edge point, in main forming step In inner ring blank is molded into inner ring by squeezing, unfinished built-in edge is partially converted to built-in edge part and not The raceway of completion is partially converted to raceway part, and wherein inner ring is formed without any cutting with its final profile.

Optionally, wherein inner ring blank is by squeezing the annular space generated.

Optionally, wherein inner ring is formed by least two pressing steps by ring.

Optionally, wherein built-in edge part includes built-in edge, which has the taper of tapered roller bearing The inspection surface of roller checks that surface is formed as annular in main forming step.

Optionally, wherein inner ring blank includes unfinished flange marginal portion, and inner ring includes flange edge portion, not complete At flange edge portion be converted into flange edge portion in main forming step.

The beneficial effects of the invention are as follows：

A kind of manufacture of the invention for tapered roller bearing inner ring method, this method can cost-effectively into Row, but also the quality of inner ring can be made to reach sufficiently high quality simultaneously.

Detailed description of the invention

Fig. 1 shows the longitdinal cross-section diagram of the main rotating shaft line of tapered roller bearing as embodiment of the invention.

Fig. 2 shows the schematic diagrames of the method for manufacturing inner ring.

Embodiment

The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.

Fig. 1 shows schematic longitudinal half section of the tapered roller bearing 1 of the main shaft as rotary shaft, as this public affairs The exemplary embodiment opened.Tapered roller bearing 1 includes inner ring 2, outer ring 3 and more taper rollers 4, they, which are arranged to, makes them It is rolled between inner ring 2 and outer ring 3, tapered roller bearing 1 is embodied as single-row tapered roller bearing, tapered roller bearing 1 It is embodied especially as annular bearing with rolling contact of the contact angle 5 between 0-45 degree.Taper roller 4 has truncated cone shape, circle Conical bearing surfaces 6 are bored, conical roller 4 also has small end face 7 and large end face 8.The rotary shaft 9 of taper roller 4 is relative to rotation Main shaft H is in tilted layout.Outer ring 3 has cylindrical outer surface 10 and taper interior rollaway nest 11, which rolls towards taper Son 4 is radially-inwardly.Outer ring 3 is integrally formed, in particular, outer ring is made of metal, outer ring 3 has wall thickness at its thickest point C2, inner ring 2 have cylindrical form interior surface 12, which, which limits, is open running through for inner ring 2.Exterior cylindrical surfaces 10 are for installing In the first support construction, such as socket or hole, for example, inner periphery 12 is used to be mounted on the second support construction, such as Main shaft or axis.Inner ring is in the axial direction raceway part 13 and built-in edge part 14 with rotary shaft H points.13 shape of raceway part At raceway 15, especially contact surface or bearing surface, taper roller 4 rolls on it.Raceway 15 is presented as the outer rolling of inner ring 2 Road, and there is cone shape.Built-in edge part 14 includes built-in edge 14a, and built-in edge 14a has taper roller 4 The inspection surface 16 of large end face 8.It checks to extend in 16 vertical section shown in of surface with vertical or approximately perpendicular angle and connect Touch surface 15.In the longitudinal section shown in, inner ring 2 has the shape of horizontal big L, and wherein horizontal arm is formed by raceway part 13, And the arm stretched out from it is formed by built-in edge part 14.Conical roller 4 is arranged in retainer 17.Inner ring 2 is most thick at it There is wall thickness C1, inner ring 2 and optionally outer ring are squeezed into their final shape, without any cutting, pass through extruding at point. In particular, raceway 15 and interior rollaway nest 11 pass through at least one pressing steps cold roll forming.Diameter in built-in edge part 14 is outside In portion region, the holding net 30 that retainer 17 can be engaged by holding element 31 is formed on built-in edge 14a, thus by just Interlock fixed cage 17 and conical roller 4, surface 16 and/or built-in edge part 14.It is separated from from the metal strip of thickness S Circular blank 18 in, pass through removal central part 20, generate intermediate products of the ring 19 as intermediate ring 3.20 shape of central part At another circular blank 21, it is the semi-finished product of inner ring 2, another central part 22 is moved from another circular blank 21 Remove, therefore provide a ring in step I for outer ring 3, alternatively, it is also possible to use another region of metal tape rather than in Center portion point 20.Ring 19 forms outer ring blank 24, and outer ring blank 24 has sleeved shape, and further ring 23 forms inner ring blank 25, inner ring blank 25 has been formed into profile sleeve, and wherein the temperature of outer ring blank 24 and inner ring blank 25 is always less than basis The recrystallization temperature of material, inner ring blank 25 include unfinished raceway part 26 and unfinished built-in edge part 27.

As shown in Fig. 2, the outer diameter of unfinished built-in edge part 27 is greater than the outer diameter of unfinished raceway part 26, it is interior Enclose form of the blank 25 using outer diameter and inner diameter along axial ever-increasing sleeve.Inner ring blank 25, which has, runs through opening 28, with Being formed in inner ring 2 afterwards, there is running through for cylindrical form interior surface 12 to be open.Outer ring blank 24 forms outer ring 3,25 shape of inner ring blank At inner ring 2 or alternatively enter inner ring 2 ', flange edge 32 can before or after inner ring 2 ' is combined with conical roller 4 shape At.Here it must be stressed that unfinished raceway part 26 is converted into raceway part 13, so that raceway 15 has passed through master Forming step is formed.

The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.

Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that：It still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features； And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims (5)

1. a kind of method of inner ring of manufacture for tapered roller bearing, wherein inner ring includes raceway part and fixed edge edge Point, which is characterized in that this approach includes the following steps：Inner ring blank is provided, wherein inner ring blank includes unfinished groove portion Point, and unfinished built-in edge part, wherein unfinished built-in edge part has than unfinished raceway part more Big outer diameter, and wherein inner ring blank has through-hole, and inner ring blank is molded into inner ring by squeezing in main forming step In, unfinished built-in edge is partially converted to built-in edge part and unfinished raceway is partially converted to raceway part, Wherein inner ring is formed without any cutting with its final profile.

2. a kind of method of inner ring of the manufacture according to claim 1 for tapered roller bearing, it is characterised in that：Wherein Inner ring blank is by squeezing the annular space generated.

3. a kind of method of inner ring of the manufacture according to claim 2 for tapered roller bearing, it is characterised in that：Wherein Inner ring is formed by least two pressing steps by ring.

4. a kind of method of inner ring of the manufacture according to claim 1 for tapered roller bearing, it is characterised in that：Wherein Built-in edge part includes built-in edge, which has the inspection surface of the conical roller of tapered roller bearing, in master In forming step, check that surface is formed as annular.

5. a kind of method of inner ring of the manufacture according to claim 1 for tapered roller bearing, it is characterised in that：Wherein Inner ring blank includes unfinished flange marginal portion, and inner ring includes flange edge portion, and unfinished flange marginal portion exists Flange edge portion is converted into main forming step.