CN209716335U - A kind of symmetrical rolling mold of tapered roller bearing internal ring - Google Patents

Abstract

The utility model discloses a kind of symmetrical rolling molds of tapered roller bearing internal ring, including drive roll and main shaft, the main shaft is transversely mounted on the circumferential inner of drive roll, retainingf key is provided in the outer circumferential walls of main shaft interlude upper end, bearing ring is successively formed using symmetrical rolling, and it is socketed on drive roll by two bearing inner races come once-forming two bearing rings, the problem of effective solution axial force, production efficiency is improved simultaneously, because traditional conical bearing is due to section asymmetry, cause suffered axial force during rolling excessive, it will affect the deformation effect of bearing ring, it is even to generate wall unevenness, the disadvantages of circularity is poor, and the symmetrical rolling mold of tapered roller bearing internal ring of the utility model can be effectively solved and evade the above existing disadvantage, to achieve the purpose that symmetrical rolling, have on drive roll simultaneously Baffle, limitation metal axial flowing, to improve the forming accuracy to bearing ring side.

Description

A kind of symmetrical rolling mold of tapered roller bearing internal ring

Technical field

The utility model belongs to rolling mold correlative technology field, and in particular to a kind of tapered roller bearing internal ring is symmetrically rolled over Expand mold.

Background technique

Mold, in industrial production to be molded, be blow molded, squeeze out, die casting or the methods of forging and forming, smelting, punching press obtain The various moulds and tool of required product, in brief, mold are the tools for making formed article, and this tool is by various Part is constituted, and different molds is made of different parts, it is mainly realized by the change of physical state of the formed material The processing of article shape is known as the title of " mother of industry ", and rolling is then annular blank in the hole that calendering roller and core roller are constituted It gradually enlarged diameter and is shaped in type, is made the swaging method of required annular element, also known as reaming or roll over ring, rolling is to be hot-forged Annular element is blank, to manufacture the larger-diameter annular element such as bearer ring, rim, high-pressure bottle, cylinder body and bushing, be can reach Precision: diameter of work tolerance of the outer diameter less than 500 millimeters can be within 1~2 millimeter；The diameter of work that outer diameter is 1~2 meter is public Difference can be within 4~5 millimeters.

Existing rolling Tool and Die Technology has the following problems: the conical bearing of existing rolling mold is not since section is right Claim, cause suffered axial force during rolling excessive, will affect the deformation effect of bearing ring, it is even to generate wall unevenness, circle The disadvantages of degree difference.

Utility model content

The purpose of this utility model is to provide a kind of symmetrical rolling molds of tapered roller bearing internal ring, to solve above-mentioned back Itd is proposed in scape technology due to section asymmetry, cause suffered axial force during rolling excessive, will affect bearing ring The problem of deformation effect.

To achieve the above object, the utility model provides the following technical solutions: a kind of tapered roller bearing internal ring is symmetrically rolled over Expand mold, including drive roll and main shaft, the main shaft are transversely mounted on the circumferential inner of drive roll, main shaft interlude upper end It is provided with retainingf key, the retainingf key and main shaft in outer circumferential walls to be fixedly connected by being integrally formed, the circumference of the retainingf key Outside is socketed with keyway, and the circumferential inner of drive roll is arranged in the keyway, and the upper end circumferential exterior of the drive roll is connected with Level-one bearing inner race and secondary bearing inner ring, the level-one bearing inner race and secondary bearing inner ring are separately positioned on drive roll upper end The circumferential inner of half section of half section of a left side for circumferential exterior and the right side, the level-one bearing inner race and secondary bearing inner ring is socketed with lateral Core roller is socketed with interval retaining ring, the drive roll of interval retaining ring left and right ends in outer circumferential walls at the drive roll upper, middle and lower Rolling groove A is provided in outer circumferential walls, it is convex to be connected with rolling in the drive roll outer circumferential walls of two outer ends rolling groove A Enclose A, be respectively connected with limiting slot in the drive roll outer circumferential walls of two outer ends rolling flange collar A, two limiting slots it is outer End is connected separately with side baffle, and two side baffles are connected to the left and right ends of drive roll, the level-one bearing inner race Bottom be socketed in inside the side baffle opposite direction gap in interval retaining ring and left side, during the bottom of the secondary bearing inner ring is socketed in Inside the side baffle opposite direction gap on barrier circle and right side.

Preferably, lateral core roller main body, the left and right ends circumferential exterior of the core roller main body are provided on the core roller It is socketed with the shaft shoulder, is socketed with middle spacer at core roller main body center in outer circumferential walls, the level-one bearing inner race is socketed in Outside gap between the shaft shoulder and middle spacer of core roller main body left end circumferential exterior, the secondary bearing inner ring is socketed in core roller master Outside gap between the shaft shoulder and middle spacer of body right end circumferential exterior.

Preferably, the circumferential inner of the secondary bearing inner ring is provided with bearing collar aperture, and the bearing collar aperture is socketed in core Outside gap between the shaft shoulder and middle spacer of roller main body right end circumferential exterior, the secondary bearing inner ring left end circumferential exterior It is socketed with rolling flange collar B, the secondary bearing inner ring right end circumferential exterior is socketed with spacing collar, and the spacing collar and rolling are convex Rolling groove B is provided in secondary bearing inner ring outer circumferential walls between circle B.

Preferably, the shape size and structure composition of the level-one bearing inner race and secondary bearing inner ring are all the same, described Level-one bearing inner race and secondary bearing inner ring keep being symmetrically installed between each other in the circumferential exterior of core roller main body by middle spacer.

Preferably, the width of the level-one bearing inner race and secondary bearing inner ring respectively with the interval retaining ring on drive roll The distance between two side baffle inner walls are equal.

Preferably, the level-one bearing inner race and the transverse width of the bearing collar aperture on secondary bearing inner ring with middle spacer The distance between two shaft shoulders are equal.

Preferably, the level-one bearing inner race and secondary bearing inner ring keep relatively parallel state with drive roll, described Relatively parallel state is kept between main shaft and core roller.

Compared with prior art, the utility model provides a kind of symmetrical rolling mold of tapered roller bearing internal ring, has Below the utility model has the advantages that

1, the utility model successively forms bearing ring using symmetrical rolling, and is socketed in master by two bearing inner races Carry out once-forming two bearing rings on dynamic roller, the problem of effective solution axial force, while production efficiency is improved, because passing The conical bearing of system is caused suffered axial force during rolling excessive, will affect the change of bearing ring due to section asymmetry The disadvantages of shape effect, generation wall unevenness is even, and circularity is poor, and the symmetrical rolling mold of the tapered roller bearing internal ring of the utility model It can be effectively solved and evade the above existing disadvantage, to achieve the purpose that symmetrical rolling, while having baffle on drive roll, limit Metal axial flowing, to improve the forming progress to bearing ring side；

2, the symmetrical rolling mold basic principle of the tapered roller bearing internal ring of the utility model are as follows: during rolling, Driven roller is drive roll, makees rotation rolling movement, and core roller is passive guide roller, makees driven rotation rolling movement and radial alignment feeding Movement, lasso blank constantly bite drive under the rotary motion of driven roller, that is, drive roll and the tight feed motion effect of core roll-in The closing rolling groove that dynamic roller, that is, drive roll and core roller are constituted makes lasso blank generate continuous local plastic and deforms, on drive roll The side baffle of left and right ends then limits the axial flowing of metal, make the reduction of bearing ring wall thickness, enlarged-diameter, cross section profile at Shape, to achieve the purpose that symmetrical rolling.

Detailed description of the invention

Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention, in the accompanying drawings:

Fig. 1 be the utility model proposes a kind of symmetrical rolling mold exterior stereochemical structure signal of tapered roller bearing internal ring Figure；

Fig. 2 be the utility model proposes a kind of symmetrical rolling mold main view planar structure signal of tapered roller bearing internal ring Figure；

Fig. 3 be the utility model proposes drive roll structure schematic diagram；

Fig. 4 be the utility model proposes core roll structure schematic diagram；

Fig. 5 be the utility model proposes bearing inner race structural schematic diagram；

Fig. 6 be the utility model proposes a kind of symmetrical rolling die side view plane structural representation of tapered roller bearing internal ring Figure；

Fig. 7 be the utility model proposes drive roll and bearing inner race do not stress and analyze structural schematic diagram；

Fig. 8 be the utility model proposes drive roll and bearing inner race force analysis structural schematic diagram；

In figure: 1, drive roll；2, main shaft；3, keyway；4, level-one bearing inner race；5, secondary bearing inner ring；6, core roller；7, solid Determine key；8, side baffle；9, interval retaining ring；10, rolling groove A；11, rolling flange collar A；12, limiting slot；13, middle spacer；14, core Roller main body；15, the shaft shoulder；16, rolling flange collar B；17, bearing collar aperture；18, rolling groove B；19, spacing collar.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-8 is please referred to, the utility model provides a kind of technical solution: a kind of symmetrical rolling mould of tapered roller bearing internal ring Tool, including drive roll 1 and main shaft 2, main shaft 2 are transversely mounted on the circumferential inner of drive roll 1, outside 2 interlude upper end circumference of main shaft It is provided with retainingf key 7, retainingf key 7 and main shaft 2 on wall to be fixedly connected by being integrally formed, the circumferential exterior of retainingf key 7 is socketed with The circumferential inner of drive roll 1 is arranged in keyway 3, keyway 3, and the upper end circumferential exterior of drive roll 1 is connected with 4 He of level-one bearing inner race Secondary bearing inner ring 5, the circumferential inner of secondary bearing inner ring 5 are provided with bearing collar aperture 17, and bearing collar aperture 17 is socketed in core roller master Outside gap between the shaft shoulder 15 and middle spacer 13 of 14 right end circumferential exterior of body, 5 left end circumferential exterior of secondary bearing inner ring It is socketed with rolling flange collar B16,5 right end circumferential exterior of secondary bearing inner ring is socketed with spacing collar 19, and spacing collar 19 and rolling are convex It is provided with rolling groove B18 in 5 outer circumferential walls of secondary bearing inner ring between circle B16, when installing fixed core roller 6, is needed at this time The interval retaining ring 9 that docking is socketed on drive roll 1 respectively and left side of level-one bearing inner race 4 and secondary bearing inner ring 5 Between side baffle 8 between interval retaining ring 9 and the side baffle on right side 8, and on level-one bearing inner race 4 and secondary bearing inner ring 5 Rolling flange collar B16 is bonded with the rolling groove A10 on drive roll 1, the rolling on level-one bearing inner race 4 and secondary bearing inner ring 5 Groove B18 is bonded with the rolling flange collar A11 on drive roll 1, the spacing collar 19 on level-one bearing inner race 4 and secondary bearing inner ring 5 It is bonded with the limiting slot 12 on drive roll 1, just can guarantee being normally carried out for rolling, level-one bearing inner race 4 and secondary bearing in this way Inner ring 5 is separately positioned on half section of the left side of 1 upper end circumferential exterior of drive roll and half section right, in level-one bearing inner race 4 and secondary bearing The circumferential inner of circle 5 is socketed with lateral core roller 6, and lateral core roller main body 14, the left and right of core roller main body 14 are provided on core roller 6 Both ends circumferential exterior is socketed with the shaft shoulder 15, is socketed with middle spacer 13, level-one bearing at 14 center of core roller main body in outer circumferential walls Inner ring 4 is socketed in outside the gap between the shaft shoulder 15 and middle spacer 13 of 14 left end circumferential exterior of core roller main body, in secondary bearing Circle 5 is socketed in outside the gap between the shaft shoulder 15 and middle spacer 13 of 14 right end circumferential exterior of core roller main body, and passes through primary axis It holds inner ring 4 and secondary bearing inner ring 5 is socketed in once-forming two bearing rings on drive roll 1, effective solution axial direction The problem of power, while production efficiency is improved, interval retaining ring 9, interval retaining ring 9 are socketed at 1 upper, middle and lower of drive roll in outer circumferential walls Rolling groove A10,1 circumference of drive roll of two outer ends rolling groove A10 are provided in 1 outer circumferential walls of drive roll of left and right ends It is connected with rolling flange collar A11 on outer wall, is respectively connected with limiting slot in 1 outer circumferential walls of drive roll of two outer ends rolling flange collar A11 12, the outer end of two limiting slots 12 is connected separately with side baffle 8, and two side baffles 8 are connected to the left and right two of drive roll 1 End, the bottom of level-one bearing inner race 4 are socketed in inside the opposite gap of side baffle 8 of interval retaining ring 9 and left side, secondary bearing inner ring 5 bottom is socketed in inside the opposite gap of side baffle 8 of interval retaining ring 9 and right side.

The shape size and structure composition of level-one bearing inner race 4 and secondary bearing inner ring 5 are all the same, level-one bearing inner race 4 Circumferential exterior with secondary bearing inner ring 5 in core roller main body 14 keeps being symmetrically installed between each other by middle spacer 13, such energy It is enough so that between interval retaining ring 9 and two 8 inner walls of side baffle on drive roll 1 when carrying out rolling the synchronous shape of holding between the two State can reduce the generation of defect ware so that being able to maintain unanimously by the lasso embryo material of the two rolling in this way；Level-one bearing The width of inner ring 4 and secondary bearing inner ring 5 is respectively between the interval retaining ring 9 and two 8 inner walls of side baffle on drive roll 1 It is equidistant, in this way when pushing primary axis holds inner ring 4 and secondary bearing inner ring 5, level-one bearing inner race 4 and secondary bearing inner ring 5 bottom can be completely inserted between the interval retaining ring 9 on drive roll 1 and two 8 inner walls of side baffle, so that Rolling lasso embryo material can be more stable；The transverse width of bearing collar aperture 17 on level-one bearing inner race 4 and secondary bearing inner ring 5 It is equal with the distance between two shaft shoulders 15 with middle spacer 13, in this way when core roller 6 pushes down on level-one bearing inner race 4 and second level Enable to level-one bearing inner race 4 and secondary bearing inner ring 5 that can limit two again while rotation when bearing inner race 5 Person, so that the case where level-one bearing inner race 4 and secondary bearing inner ring 5 will not generate deviation when rotated and derail；Level-one Bearing inner race 4 and secondary bearing inner ring 5 keep relatively parallel state with drive roll 1, keep opposite between main shaft 2 and core roller 6 Parastate, in this way when the lasso embryo material for needing rolling is placed into progress rolling between the two, because of level-one bearing inner race 4 Relatively parallel state is kept mainly to enable to be rolled over by the lasso embryo material of rolling with drive roll 1 with secondary bearing inner ring 5 Expand more with it is plain.

The working principle and process for using of the utility model: after the utility model installs, drive roll 1 is when in use Driving end needs to be attached with external impetus equipment by main shaft 2, so that external impetus equipment drives master by main shaft 2 Dynamic roller 1 does rotation and rolls movement, and then core roller 6 is fixed by external equipment, and core roller 6 is passive guide roller, pacifies in core roller 6 Need first to be socketed in level-one bearing inner race 4 and secondary bearing inner ring 5 circumferential exterior of core roller 6, and the interval on core roller 6 before dress Set 13 can then separate level-one bearing inner race 4 and secondary bearing inner ring 5 on core roller 6, prevent the two mutual when working Interference is generated, and when installing fixed core roller 6, needs the docking respectively level-one bearing inner race 4 and secondary bearing inner ring 5 at this time It is socketed between the interval retaining ring 9 on drive roll 1 and the side baffle 8 in left side between interval retaining ring 9 and the side baffle on right side 8, And the rolling flange collar B16 on level-one bearing inner race 4 and secondary bearing inner ring 5 is bonded with the rolling groove A10 on drive roll 1, one Rolling groove B18 on grade bearing inner race 4 and secondary bearing inner ring 5 is bonded with the rolling flange collar A11 on drive roll 1, primary axis The spacing collar 19 held on inner ring 4 and secondary bearing inner ring 5 is bonded with the limiting slot 12 on drive roll 1, then again needing rolling Lasso embryo material be placed into drive roll 1 and level-one bearing inner race 4 and the progress rolling operation of 5 place of joining of secondary bearing inner ring.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (7)

1. a kind of symmetrical rolling mold of tapered roller bearing internal ring, including drive roll (1) and main shaft (2), it is characterised in that: described Main shaft (2) is transversely mounted on the circumferential inner of drive roll (1), is provided in the outer circumferential walls of main shaft (2) the interlude upper end solid Determine key (7), the retainingf key (7) is fixedly connected with main shaft (2) by being integrally formed, the circumferential exterior set of the retainingf key (7) It is connected to keyway (3), circumferential inner of keyway (3) setting in drive roll (1), the upper end circumferential exterior of the drive roll (1) It is connected with level-one bearing inner race (4) and secondary bearing inner ring (5), the level-one bearing inner race (4) and secondary bearing inner ring (5) point It She Zhi not be in half section of half section of a left side for drive roll (1) upper end circumferential exterior and the right side, the level-one bearing inner race (4) and secondary bearing The circumferential inner of circle (5) is socketed with lateral core roller (6), is socketed with interval in outer circumferential walls at drive roll (1) upper, middle and lower Retaining ring (9), is provided with rolling groove A (10) in drive roll (1) outer circumferential walls of interval retaining ring (9) left and right ends, and two It is connected with rolling flange collar A (11) in drive roll (1) outer circumferential walls of rolling groove A (10) outer end, two rollings are convex It encloses in drive roll (1) outer circumferential walls of A (11) outer end and is respectively connected with limiting slot (12), the outer end point of two limiting slots (12) It is not connected with side baffle (8), two side baffles (8) are connected to the left and right ends of drive roll (1), the level-one bearing The bottom of inner ring (4) is socketed in inside the opposite gap of side baffle (8) of interval retaining ring (9) and left side, the secondary bearing inner ring (5) bottom is socketed in inside the opposite gap of side baffle (8) of interval retaining ring (9) and right side.

2. the symmetrical rolling mold of a kind of tapered roller bearing internal ring according to claim 1, it is characterised in that: the core roller (6) lateral core roller main body (14) is provided on, the left and right ends circumferential exterior of the core roller main body (14) is socketed with the shaft shoulder (15), it is socketed with middle spacer (13) in outer circumferential walls at core roller main body (14) center, level-one bearing inner race (4) socket Outside gap between the shaft shoulder (15) and middle spacer (13) of core roller main body (14) left end circumferential exterior, in the secondary bearing Circle (5) is socketed in outside the gap between the shaft shoulder (15) and middle spacer (13) of core roller main body (14) right end circumferential exterior.

3. the symmetrical rolling mold of a kind of tapered roller bearing internal ring according to claim 2, it is characterised in that: the second level The circumferential inner of bearing inner race (5) is provided with bearing collar aperture (17), and the bearing collar aperture (17) is socketed in core roller main body (14) right side It holds outside the gap between the shaft shoulder (15) and middle spacer (13) of circumferential exterior, secondary bearing inner ring (5) the left end circumference Outside is socketed with rolling flange collar B (16), and secondary bearing inner ring (5) the right end circumferential exterior is socketed with spacing collar (19), institute It states and is provided with rolling groove B in secondary bearing inner ring (5) outer circumferential walls between spacing collar (19) and rolling flange collar B (16) (18)。

4. the symmetrical rolling mold of a kind of tapered roller bearing internal ring according to claim 2, it is characterised in that: the level-one The shape size and structure composition of bearing inner race (4) and secondary bearing inner ring (5) are all the same, the level-one bearing inner race (4) and Secondary bearing inner ring (5) keeps being symmetrically installed between each other in the circumferential exterior of core roller main body (14) by middle spacer (13).

5. the symmetrical rolling mold of a kind of tapered roller bearing internal ring according to claim 1, it is characterised in that: the level-one The width of bearing inner race (4) and secondary bearing inner ring (5) respectively on drive roll (1) interval retaining ring (9) and two side blocks The distance between plate (8) inner wall is equal.

6. the symmetrical rolling mold of a kind of tapered roller bearing internal ring according to claim 3, it is characterised in that: the level-one The transverse width of bearing collar aperture (17) on bearing inner race (4) and secondary bearing inner ring (5) with middle spacer (13) and two axis The distance between shoulder (15) is equal.

7. the symmetrical rolling mold of a kind of tapered roller bearing internal ring according to claim 1, it is characterised in that: the level-one Bearing inner race (4) and secondary bearing inner ring (5) keep relatively parallel state, the main shaft (2) and core roller with drive roll (1) (6) relatively parallel state is kept between.