CN104565069A - Crankshaft connecting rod mechanism with inner race split needle bearings in cold header - Google Patents
Crankshaft connecting rod mechanism with inner race split needle bearings in cold header Download PDFInfo
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- CN104565069A CN104565069A CN201410812671.8A CN201410812671A CN104565069A CN 104565069 A CN104565069 A CN 104565069A CN 201410812671 A CN201410812671 A CN 201410812671A CN 104565069 A CN104565069 A CN 104565069A
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- connecting rod
- ring
- crankshaft
- outer ring
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Abstract
The invention discloses a crankshaft connecting rod mechanism of a cold header, and particularly discloses a crankshaft connecting rod mechanism with an inner race split needle bearings in a cold header. A split bearing inner race is fixedly connected with a connecting rod neck of a crankshaft in a sleeving manner; symmetric limiting convex rings are arranged on the two lateral peripheral positions of the outer surface of the split bearing inner race; the two limiting convex rings and the outer surface of the inner race are combined to form an annular mounting limiting groove; the bearing needles are movably and tightly arranged in the annular mounting limiting groove and higher than the annular mounting limiting groove; the bearing needles are all connected with a bearing outer ring in a sleeving manner; the inner surface of the bearing outer ring is always tangent to the bearing needles; the shaft hole part of the connecting rod is fixedly connected with the bearing outer ring in the sleeving manner; bearing end plates are additionally arranged at the two lateral orifice edges of the shaft hole part; each of the bearing end plate is in resistance connection with the corresponding bearing needles on the same side. The crankshaft connecting rod mechanism solves the technical problem of the assembling clearance between the crankshaft and the connecting rod, and improves the transmission accuracy of the crankshaft and the connecting rod.
Description
Technical field
The present invention relates to a kind of crankshaft & connecting of cold header, the crankshaft & connecting particularly with inner ring separable type needle bearing in a kind of cold header.
Background technique
Cold header are that the main special-purpose machinery being used for producing in batches the fastening piece such as nut, bolt is specially established with upsetting
Standby.
Crankshaft & connecting is modal transmission part on existing cold header.The connecting rod that traditional above-mentioned crankshaft & connecting comprises bent axle substantially and is actively socketed on the connecting rod neck of bent axle, simultaneously in order to reduce bent axle and connecting rod mutual friction factor between the two and frictionally damage, usual needs first set up bearing shell outside the connecting rod neck of bent axle, and then connecting rod is actively socketed on this bearing shell.
At present, the cold heading technique required precision of cold-heading molding product is more and more higher, therefore just needs the drive gap value of crankshaft & connecting to control be close to zero.But, the shaft hole inner wall of above-mentioned conventional crankshafts linkage mechanism intermediate bushing and connecting rod is still for sliding friction coordinates, consider that the mutual sliding friction of metal produces heat and easily makes bearing shell and connecting rod expand, therefore reserved comparatively wide arc gap is needed, thus affect the transmission precision of crankshaft & connecting, finally have a strong impact on the cold-heading molding effect of cold header.Therefore be necessary to do further technological improvement to the existing crankshaft & connecting in above-mentioned cold header.
Summary of the invention
The object of the invention is to provide the crankshaft & connecting with inner ring separable type needle bearing in a kind of cold header to solve above-mentioned the deficiencies in the prior art.
To achieve these goals, crankshaft & connecting with inner ring separable type needle bearing in a kind of cold header designed by the present invention, comprise crankshaft-and-connecting-rod, separable type bearing inner race is connected at the connecting rod neck fixed sleeves of described bent axle, the both sides peripheral position of the outer surface of this separable type bearing inner race is formed with symmetrical position limiting convex ring, two above-mentioned place's position limiting convex rings and the outer surface three of inner ring form ring-type mounting limit groove, in this ring-type mounting limit groove, tight shape movable rows is furnished with bearing needle, described bearing needle exceeds ring-type mounting limit groove, and its axle direction is consistent with the axle direction of bent axle, a bearing outer ring has jointly been socketed outward at above-mentioned bearing needle, and the internal surface of this bearing outer ring keeps tangent with bearing needle all the time, the axis hole part of described connecting rod is fixedly sleeved on above-mentioned bearing outer ring, the two side holes opening's edge of this axis hole part all has additional bearing (ball) cover outward, the bearing (ball) cover of every side all keeps off mutually with the bearing needle of its respective side and connecing, and be fixed with above-mentioned connecting rod.
Crankshaft & connecting with inner ring separable type needle bearing in above-mentioned provided a kind of cold header, its structure middle (center) bearing inner ring adopts separable type structure, the bearing inner race of this kind of structure can be socketed on the connecting rod neck of bent axle smoothly and easily, then bearing needle is established will the connecting rod of bearing outer ring to be established to be socketed on the above-mentioned axis hole installation position jointly built by numerous bearing needle at axis hole liner in advance again by tightening solid matter at the bearing inner race of said structure, and ensure the internal surface of above-mentioned bearing outer ring and bearing needle tangent all the time, finally by bearing baffle, axial limiting is carried out to connecting rod.Thus solve the technical problem that traditional needle bearing cannot be inserted in the connecting rod neck of bent axle, the connecting rod neck of bent axle and connecting rod is made to carry out realizing rolling friction in transmission process, consider that the friction factor of rolling friction is far smaller than conventional coefficient of sliding friction when adopting bearing shell (in employing steel matter and under ensureing the prerequisite of surface flatness, its coefficient of rolling friction can be close to zero substantially), make bent axle and connecting rod fit up gap between the two can be down to minimum, and need not as bearing shell design, should be bearing shell friction generates heat and make part expand and stay comparatively wide arc gap, thus improve multistage cold former precision, can run up,
As preferably, the axis hole part of above-mentioned connecting rod and bearing outer ring concrete fixedly sleeved structure is between the two: on described bearing outer ring, offer the annular groove arranged around bearing outer ring, the groove bottom uniform ring of this annular groove is furnished with the location and installation hole of more than three, through bolt in above-mentioned location and installation hole, this bolt thread spins in the axis hole part of connecting rod.In above-mentioned preferred version, the means of fixation of connecting rod and bearing outer ring is simple, and linkage structure stability is strong.
Crankshaft & connecting with inner ring separable type needle bearing in a kind of cold header that the present invention obtains, because the connecting rod neck of bent axle in its structure and connecting rod are carrying out realizing rolling friction in transmission process, therefore bent axle and connecting rod fit up gap is between the two almost nil, makes transmission accuracy between the two high.
Accompanying drawing explanation
Fig. 1 be embodiment 1 the structural representation of the crankshaft & connecting with inner ring separable type needle bearing in a kind of cold header is provided;
Fig. 2 be embodiment 1 the axial sectional view of the crankshaft & connecting with inner ring separable type needle bearing in a kind of cold header is provided;
Fig. 3 be embodiment 1 the radial cross-section of the crankshaft & connecting with inner ring separable type needle bearing in a kind of cold header is provided;
Fig. 4 be embodiment 2 the structural representation of the crankshaft & connecting with inner ring separable type needle bearing in a kind of cold header is provided.
In figure: bent axle 1, connecting rod neck 1-1, connecting rod 2, separable type bearing inner race 3, outer surface 3-1, position limiting convex ring 4, bearing needle 5, bearing outer ring 6, internal surface 6-1, axis hole part 7, bearing (ball) cover 8, annular groove 9, location and installation hole 10.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1:
As Figure 1-3, crankshaft & connecting with inner ring separable type needle bearing in a kind of cold header provided in the present embodiment, comprise bent axle 1 and connecting rod 2, separable type bearing inner race 3 is connected at the connecting rod neck 1-1 fixed sleeves of described bent axle 1, the both sides peripheral position of the outer surface 3-1 of this separable type bearing inner race 3 is formed with symmetrical position limiting convex ring 4, two above-mentioned place's position limiting convex rings 4 form ring-type mounting limit groove with the outer surface 3-1 three of inner ring, in this ring-type mounting limit groove, tight shape movable rows is furnished with bearing needle 5, described bearing needle 5 exceeds ring-type mounting limit groove, and its axle direction is consistent with the axle direction of bent axle 1, a bearing outer ring 6 has jointly been socketed outside above-mentioned bearing needle 5, and the internal surface 6-1 of this bearing outer ring 6 keeps tangent with bearing needle 5 all the time, the axis hole part 7 of described connecting rod 2 is socketed on above-mentioned bearing outer ring 6, and be welded and fixed between the two, the two side holes opening's edge of this axis hole part 7 all has additional bearing (ball) cover 8 outward, the bearing (ball) cover 8 of every side all keeps off with bearing needle 5 phase of its respective side and connecing, and be fixed with above-mentioned connecting rod 2.
Embodiment 2:
Crankshaft & connecting with inner ring separable type needle bearing in a kind of cold header provided in the present embodiment, its general structure is consistent with embodiment 1, as shown in Figure 4, just the axis hole part 7 of connecting rod 2 described in the present embodiment with bearing outer ring 6 concrete fixedly sleeved structure is between the two: on described bearing outer ring 6, offer the annular groove 9 arranged around bearing outer ring 6, the groove bottom uniform ring of this annular groove 9 is furnished with multiple location and installation hole 10, equal through bolt in above-mentioned multiple location and installation hole 10, this bolt thread spins in the axis hole part 7 of connecting rod 2, thus above-mentioned bearing outer ring 6 is fixed with the axis hole part 7 of connecting rod 2.
Claims (2)
1. the crankshaft & connecting with inner ring separable type needle bearing in cold header, comprise bent axle (1) and connecting rod (2), it is characterized in that being connected to separable type bearing inner race (3) at connecting rod neck (1-1) fixed sleeves of described bent axle (1), the both sides peripheral position of the outer surface (3-1) of this separable type bearing inner race (3) is formed with symmetrical position limiting convex ring (4), two above-mentioned place's position limiting convex rings (4) form ring-type mounting limit groove with outer surface (3-1) three of inner ring, in this ring-type mounting limit groove, tight shape movable rows is furnished with bearing needle (5), described bearing needle (5) exceeds ring-type mounting limit groove, and its axle direction is consistent with the axle direction of bent axle (1), a bearing outer ring (6) has jointly been socketed outward at above-mentioned bearing needle (5), and the internal surface (6-1) of this bearing outer ring (6) keeps tangent with bearing needle (5) all the time, the axis hole part (7) of described connecting rod (2) is fixedly sleeved on above-mentioned bearing outer ring (6), the two side holes opening's edge of this axis hole part (7) all has additional bearing (ball) cover (8) outward, the bearing (ball) cover (8) of every side all keeps off mutually with the bearing needle (5) of its respective side and connecing, and be fixed with above-mentioned connecting rod (2).
2. the crankshaft & connecting with inner ring separable type needle bearing in a kind of cold header according to claim 1, it is characterized in that the axis hole part (7) of described connecting rod (2) and bearing outer ring (6) concrete fixedly sleeved structure are between the two: on described bearing outer ring (6), offer the annular groove (9) arranged around bearing outer ring (6), the groove bottom uniform ring of this annular groove (9) is furnished with the location and installation hole (10) of more than three, through bolt in above-mentioned location and installation hole (10), this bolt thread spins in the axis hole part (7) of connecting rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410812671.8A CN104565069B (en) | 2014-12-24 | 2014-12-24 | Crankshaft connecting rod mechanism with split inner race needle bearings in cold header |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410812671.8A CN104565069B (en) | 2014-12-24 | 2014-12-24 | Crankshaft connecting rod mechanism with split inner race needle bearings in cold header |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104565069A true CN104565069A (en) | 2015-04-29 |
| CN104565069B CN104565069B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410812671.8A Active CN104565069B (en) | 2014-12-24 | 2014-12-24 | Crankshaft connecting rod mechanism with split inner race needle bearings in cold header |
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| CN (1) | CN104565069B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH565327A5 (en) * | 1973-05-07 | 1975-08-15 | Foote Dale E | Needle roller 'big-end' crankshaft bearing - semi-circular needle roller bearing shells replace conventional plain shells in connecting rod ends for longer life |
| CN101253341A (en) * | 2005-09-01 | 2008-08-27 | Ntn株式会社 | Roller bearing |
| CN101395392A (en) * | 2006-03-07 | 2009-03-25 | 谢夫勒两合公司 | Ready-to-install needle bearing comprising an inner and outer ring |
| CN203770408U (en) * | 2014-03-04 | 2014-08-13 | 浙江鑫茂轴承有限公司 | Bearing |
| CN204327764U (en) * | 2014-12-24 | 2015-05-13 | 宁波海星机械制造有限公司 | Crankshaft & connecting with inner ring separable type needle bearing in cold header |
-
2014
- 2014-12-24 CN CN201410812671.8A patent/CN104565069B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH565327A5 (en) * | 1973-05-07 | 1975-08-15 | Foote Dale E | Needle roller 'big-end' crankshaft bearing - semi-circular needle roller bearing shells replace conventional plain shells in connecting rod ends for longer life |
| CN101253341A (en) * | 2005-09-01 | 2008-08-27 | Ntn株式会社 | Roller bearing |
| CN101395392A (en) * | 2006-03-07 | 2009-03-25 | 谢夫勒两合公司 | Ready-to-install needle bearing comprising an inner and outer ring |
| CN203770408U (en) * | 2014-03-04 | 2014-08-13 | 浙江鑫茂轴承有限公司 | Bearing |
| CN204327764U (en) * | 2014-12-24 | 2015-05-13 | 宁波海星机械制造有限公司 | Crankshaft & connecting with inner ring separable type needle bearing in cold header |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104565069B (en) | 2017-05-03 |
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