CN110877085A - Tower forging cold rolling forming method and die for angular contact bearing - Google Patents
Tower forging cold rolling forming method and die for angular contact bearing Download PDFInfo
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- CN110877085A CN110877085A CN201910940699.2A CN201910940699A CN110877085A CN 110877085 A CN110877085 A CN 110877085A CN 201910940699 A CN201910940699 A CN 201910940699A CN 110877085 A CN110877085 A CN 110877085A
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- 238000005097 cold rolling Methods 0.000 title claims abstract description 62
- 238000005242 forging Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005096 rolling process Methods 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000000465 moulding Methods 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 230000009286 beneficial effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
- B21H1/12—Making articles shaped as bodies of revolution rings of restricted axial length rings for ball or roller bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
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Abstract
The invention relates to the technical field of angular contact bearings, and provides a tower forging cold rolling forming method of an angular contact bearing, which comprises the following steps: s1, obtaining the volume and mass of the material needed by the molding of the inner and outer rings of the angular contact bearing; s2, blanking, upsetting and tower forging forming to obtain a cold-rolled blank; and S3, placing the outer ring of the cold-rolled blank between a rolling wheel and a rolling and expanding mandrel of the cold-rolled forming grinding tool for rolling and expanding forming, wherein the rolling and expanding forming is semi-closed cold-rolled forming. Still provide an angular contact bearing's tower forging cold-rolling expands forming die, include the rolling wheel and roll and expand the dabber, the rolling wheel with it places and rolls the cold-rolling shaping interval that expands the shaping to have the outer lane that supplies cold rolling blank between the dabber and roll, in it establishes the recess in the cold-rolling shaping interval, the rolling wheel roll expand the dabber and the recess forms semi-enclosed cold-rolling shaping structure. Compared with hot forging forming, the invention greatly saves materials, simultaneously has reasonable internal metal streamline, and can ensure the long service life and reliability of the finished product.
Description
Technical Field
The invention relates to the technical field of angular contact bearings, in particular to a tower forging cold rolling forming method and a die for an angular contact bearing.
Background
Angular Contact Ball Bearings (Angular Contact Ball Bearings) can simultaneously withstand both radial and axial loads. Can work at higher rotating speed. The larger the contact angle, the higher the axial load capacity. The single-row angular contact ball bearing is a very wide type of the series, can only bear axial load in one direction, can cause additional axial force when bearing radial load, and must apply corresponding reverse load, so the bearing is generally used in pairs. The outer ring of the bearing is close to a quarter of circular arc because of the raceway part, and compared with the outer ring of a deep groove ball bearing, the inner diameter of the outer ring of the bearing is two, one is larger and the other is smaller. The cross-sectional shape is therefore step-like and asymmetric. The series of bearing outer rings are mainly formed by hot forging and are more commonly formed by hot forging, heating and rolling.
At present, the requirements on the cost and the service life of a series of bearings of a main shaft of a high-end machine tool, a high-frequency motor, a gas turbine, a centrifugal separator, a front wheel of a small-sized automobile, a pinion shaft of a differential mechanism and various electromechanical devices are higher and higher, and the requirements on hot forging forming and hot forging heating and rolling forming cannot be met.
Disclosure of Invention
The invention aims to provide a tower forging cold rolling forming method and a die for an angular contact bearing, which can realize the optimal material-saving and streamline effects of the angular contact bearing.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions: a tower forging cold rolling forming method of an angular contact bearing comprises the following steps:
s1, obtaining the volume and mass of the material needed by the molding of the inner and outer rings of the angular contact bearing;
s2, blanking, upsetting and tower forging forming to obtain a cold-rolled blank;
s3, placing the outer ring of the cold rolling blank between a rolling wheel of a cold rolling forming grinding tool and a rolling expansion mandrel to perform rolling expansion forming, wherein the rolling expansion forming is semi-closed cold rolling forming.
Further, in the step S2, the step of obtaining the volume and the mass of the material specifically includes:
s20, according to the size of the finished product of the existing angular contact bearing, adding allowance on the basis of the size;
s21, designing an inner ring blank according to the characteristics of high-speed forging equipment, obtaining the size of the large outer diameter Dn1 of the inner ring, and simultaneously obtaining the small inner diameter dp2 of the outer ring blank which is Dn1-0.5mm, wherein 0.5mm is a blanking gap;
s22, dividing the section of the outer ring into two rectangular sections, following the law of constant volume, calculating the volume of the rectangle of the outer ring close to the inner ring to directly obtain the dimension of Dp, and similarly, calculating the inner diameter Dp2 of the rectangle of the outer ring far from the inner ring;
and S23, calculating the thickness of the material core connecting skin, forging demoulding angles and transition fillets, and obtaining the volume and the mass of the material required by the molding of the inner ring and the outer ring.
Further, in the step S20, the added margin is specifically: the margin for increasing the outer diameter is between 0.5 and 0.6mm, the margin for increasing the inner diameter is between 0.6 and 0.7mm, and the margin for increasing the height is between 0.7 and 0.8 mm.
Further, in the step S22, the inner diameters of the two rectangles are connected by using an arc, and the outer diameters of the two rectangular cross sections are kept consistent.
Further, the cold-rolled blank is lower than the cold-rolled and expanded molded outer ring by 0.2 mm.
Further, in the step S2, the inner and outer races are separated and simultaneously formed by the swaging process.
Further, in the step S2, the blanking specifically includes: obtaining the blanking weight according to the data obtained in the step S1, selecting a proper bar stock according to the length-diameter ratio of 0.8-1.2, and then obtaining the blanking size; the upsetting specifically comprises the following steps: in order to facilitate cake forming, the upsetting diameter can be obtained by subtracting 1mm from the maximum outer diameter of a forged formed part, and the upsetting thickness is obtained according to a formula and the blanking weight.
Further, corresponding bar stock and blanking length are designed according to the characteristics of high-speed forging equipment, and the diameter and thickness of the cake are calculated according to an upsetting formula.
Further, in the step S3, the semi-closed cold rolling forming method specifically includes: and arranging a groove at the position of the rolling expanding mandrel corresponding to the step structure with the small inner diameter of the cold rolled blank, so that the groove is fixed to the step structure of the cold rolled blank, thereby controlling the axial movement of the cold rolled blank, and the large inner diameter of the cold rolled blank is not limited, thereby being beneficial to the stable molding of the blank.
The embodiment of the invention provides another technical scheme: the utility model provides an angular contact bearing's tower forging cold-rolling expands forming die, includes the rolling wheel and grinds and expand the dabber, the rolling wheel with grind and expand and have the outer lane that supplies cold to grind the blank between the dabber and place and grind and expand the fashioned cold-rolling shaping interval, in establish the recess in the cold-rolling shaping interval, the rolling wheel grind expand the dabber and the recess forms semi-enclosed cold-rolling shaping structure.
Compared with the prior art, the invention has the beneficial effects that:
1. compared with hot forging forming, the material is greatly saved, and meanwhile, the internal metal streamline is reasonable, so that the long service life and the reliability of a finished product can be ensured;
2. compared with hot forging and hot rolling forming, the forging forming piece is produced on a high-speed upsetter, and the outer ring of the angular contact ball bearing is formed by cold rolling, so that the material is saved, the metal flow line is optimized, the precision is improved, and the subsequent processing is simple and convenient;
3. the semi-closed cold rolling forming die is adopted to roll and form the blank, the design is completely different from the common open cold rolling and closed cold rolling forming design, the rolling wheel is designed conventionally, and the groove of the rolling core shaft can completely contain the step-shaped part of the inner diameter of the blank, so that the axial movement of the blank is limited, the large inner diameter part is not limited, and the stability of cold rolling forming can be ensured.
Drawings
FIG. 1a is a schematic diagram of an outer ring of a finished prior art angular contact bearing;
fig. 1b is a schematic outer ring diagram of an angular contact bearing manufactured by a method for forming a tapered forging and cold rolling of an angular contact bearing according to an embodiment of the present invention;
fig. 2a is a schematic diagram of an outer ring of a cold rolled blank of a tower forging cold rolling forming method for an angular contact bearing according to an embodiment of the present invention;
fig. 2b is a schematic diagram of an inner ring of a cold rolled blank of a tower forging cold rolling forming method for an angular contact bearing according to an embodiment of the present invention;
fig. 3a is a schematic diagram illustrating separation of an inner ring and an outer ring in a tower forging cold rolling forming method for an angular contact bearing according to an embodiment of the present invention;
fig. 3b is a schematic diagram of the swaging and cold rolling method for forming the angular contact bearing according to the embodiment of the present invention;
fig. 4 is a schematic diagram of blanking and upsetting in a tower forging cold rolling forming method for an angular contact bearing according to an embodiment of the present invention;
FIG. 5a is a schematic view of a conventional open cold mill;
FIG. 5b is a schematic view of a prior art closed cold mill;
fig. 5c is a schematic diagram of semi-closed type cold rolling forming of a tower forging cold rolling forming method of an angular contact bearing according to an embodiment of the present invention;
in the reference symbols: 1-rolling wheel; 2-rolling and expanding the mandrel; 3-a groove; 4-cold rolling the blank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1a to 5c, an embodiment of the present invention provides a method for forming a tapered forging cold roll of an angular contact bearing, including the following steps: s1, obtaining the volume and mass of the material needed by the molding of the inner and outer rings of the angular contact bearing; s2, blanking, upsetting and tower forging forming to obtain a cold-rolled blank 4; s3, placing the outer ring of the cold rolling blank 4 between the rolling wheel 1 of the cold rolling forming grinding tool and the rolling expanding mandrel 2 for rolling expanding forming, wherein the rolling expanding forming is semi-closed cold rolling forming. In the embodiment, the inner ring and the outer ring can be forged at one time by adopting a tower forging process, and meanwhile, the outer ring cold rolling blank meeting the requirements is obtained by cold rolling the forged outer ring blank, so that the material saving characteristics of high efficiency and cold rolling of the high-speed upsetter are fully exerted, and the requirements of the finished bearing on the service life and the reliability of the finished bearing are continuously improved by the optimal streamline formed by hot-cold composite forming. And the semi-closed cold rolling molding is adopted, so that the stable molding of the blank is facilitated.
With reference to fig. 2a, fig. 2b, fig. 3a and fig. 3b, in the step S2, the step of obtaining the volume and the mass of the material specifically includes: s20, according to the size of the finished product of the existing angular contact bearing, adding allowance on the basis of the size; s21, designing an inner ring blank according to the characteristics of high-speed forging equipment, obtaining the size of the large outer diameter Dn1 of the inner ring, and simultaneously obtaining the small inner diameter dp2 of the outer ring blank which is Dn1-0.5mm, wherein 0.5mm is a blanking gap; s22, dividing the section of the outer ring into two rectangular sections, following the law of constant volume, calculating the volume of the rectangle of the outer ring close to the inner ring to directly obtain the dimension of Dp, and similarly, calculating the inner diameter Dp2 of the rectangle of the outer ring far from the inner ring; and S23, calculating the thickness of the material core connecting skin, forging demoulding angles and transition fillets, and obtaining the volume and the mass of the material required by the molding of the inner ring and the outer ring. In the embodiment, the material volume and mass required by the molding of the inner ring and the outer ring can be obtained by the method, the section of the outer ring is divided into two rectangular sections, and the cold rolling of the conventional rectangular sections is easy, so that the design can be separately carried out according to the law of unchanged volume. Punching the inner ring and cold rolling and expanding the outer ring.
Further optimizing the above scheme, in the step S20, the added margin specifically is: the margin for increasing the outer diameter is between 0.5 and 0.6mm, the margin for increasing the inner diameter is between 0.6 and 0.7mm, and the margin for increasing the height is between 0.7 and 0.8 mm. In the present embodiment, it is preferable that the cold rolled blank has an outer diameter margin (single side) of 0.5mm, an inner diameter margin (single side) of 0.6mm, and a height margin (single side) of 0.7mm, so that the shape of the cold rolled blank 4 is completed and the volume and mass can be calculated.
Referring to fig. 3b as an optimized solution of the embodiment of the present invention, in the step S22, the inner diameters of the two rectangles are connected by an arc, and the outer diameters of the two rectangular cross sections are kept consistent. In the embodiment, when the volume is calculated, after the circular arc angle is ignored and the outer diameter is kept consistent, the large inner diameter dp2 of the blank can be calculated according to the volume formula.
As an optimized scheme of the embodiment of the invention, the cold-rolled blank 4 is lower than the cold-rolled and expanded molded outer ring by 0.2 mm. In the embodiment, the height dimension is lower by 0.2mm than that of the cold ring rolling formed outer ring blank in consideration of the convenience of the blank entering the ring rolling wheel.
As an optimization scheme of the embodiment of the present invention, referring to fig. 4, in the step S2, the blanking specifically includes: obtaining the blanking weight according to the data obtained in the step S1, selecting a proper bar stock according to the length-diameter ratio of 0.8-1.2, and then obtaining the blanking size; the upsetting specifically comprises the following steps: in order to facilitate cake forming, the upsetting diameter can be obtained by subtracting 1mm from the maximum outer diameter of a forged formed part, and the upsetting thickness is obtained according to a formula and the blanking weight. Designing corresponding bar stock and blanking length according to the characteristics of high-speed forging equipment, and calculating the diameter and thickness of a cake according to an upsetting formula. In the embodiment, the upsetting and blanking design depends on the volume of the tower forging or the law of constant volume.
Referring to fig. 5a to 5c as an optimized scheme of the embodiment of the present invention, in the step S3, the semi-closed cold rolling forming method specifically includes: in grind expand dabber 2 correspond the stair structure department of the small internal diameter of cold mill blank 4 establishes recess 3, makes recess 3 is fixed the stair structure of cold mill blank 4 to the axial float of cold mill blank 4 has been controlled, and the big internal diameter of cold mill blank 4 is unrestricted, is favorable to the stable shaping of blank. In the present embodiment, the semi-closed cold rolling (as shown in fig. 5c) is different from the open cold rolling (as shown in fig. 5a) and the closed cold rolling (as shown in fig. 5b) in the prior art, and the groove 3 of the semi-closed cold rolling is used for fixing the step structure of the cold rolled blank 4, so that the axial movement of the cold rolled blank 4 is controlled, and the large inner diameter of the cold rolled blank 4 is not limited, which is beneficial to the stable forming of the blank.
As an optimized solution of the embodiment of the present invention, please refer to fig. 3a and fig. 3b, wherein the inner and outer rings are separated and simultaneously formed by the tower forging process. In this embodiment, after the simultaneous forming, the outer ring and the inner ring are connected together, the thickness L of the connection is usually rounded according to the characteristics of the product and the equipment, and the material core connecting skin (cross-hatched part of the drawing) are rounded, and the forging fillet is added to obtain the cold-rolled blank 4.
Example two:
the second embodiment is based on the first embodiment.
Referring to fig. 1a to 5c, an embodiment of the invention provides a tower forging cold rolling forming die for an angular contact bearing, including a rolling wheel 1 and a rolling and expanding mandrel 2, a cold rolling forming section for placing an outer ring of a cold rolling blank 4 and performing rolling and expanding forming is provided between the rolling wheel 1 and the rolling and expanding mandrel 2, a groove 3 is provided in the cold rolling forming section, and the rolling wheel 1, the rolling and expanding mandrel 2 and the groove 3 form a semi-closed cold rolling forming structure. In the present embodiment, the semi-closed cold rolling (as shown in fig. 5c) adopted in the present embodiment is different from the open cold rolling (as shown in fig. 5a) and the closed cold rolling (as shown in fig. 5b) in the prior art, and the grooves 3 thereof fix the step structure of the cold rolled blank 4, so as to control the axial movement of the cold rolled blank 4, while the large inner diameter of the cold rolled blank 4 is not limited, which is beneficial for the stable forming of the blank. Preferably, the groove is formed in the position, corresponding to the step structure with the small inner diameter, of the cold rolled blank, of the rolling and expanding mandrel. Preferably, the size of the outer ring of the cold-rolled blank is 0.2mm lower than that of the outer ring of the cold-rolled forming section.
Referring to fig. 5c as an optimization scheme of the embodiment of the present invention, the milling mandrel 2 includes a first large-diameter section 20, a small-diameter section 21 and a second large-diameter section 22, which are connected in sequence, the diameter of the small-diameter section 21 is smaller than that of the first large-diameter section 20, and the cold-milled blank 4 partially fits the first large-diameter section 20 and partially fits the small-diameter section 21. In the present embodiment, the milling mandrel 2 has a three-section structure, which is defined as a first large diameter section 20, a small diameter section 21 and a second large diameter section 22 according to the diameters of the three sections, and the diameter of the large diameter section is larger than that of the small diameter section 21, so that the small diameter section 21 and the first large diameter section 20 and the second large diameter section 22 on both sides thereof form an embedding region 23 for embedding the cold mill blank 4. Preferably, the first large diameter section 20 and the second large diameter section 22 are equal in diameter. Preferably, the diameter difference between the first large-diameter section 20 and the small-diameter section 21 is 0.5mm, which is reflected in the prepared cold-rolled blank 4, that is, the inner ring blank is designed according to the characteristics of high-speed forging equipment, so that the size of the inner ring large outer diameter Dn1 can be obtained, and meanwhile, the size dp2 of the outer ring blank small inner diameter can also be obtained, which is Dn1-0.5mm, wherein 0.5mm is a blanking gap. In addition, the connection between the large-diameter section and the small-diameter section 21 through the circular arc will also be embodied on the cold-rolled blank 4, so that the outer diameters of the two rectangular sections thereof are kept consistent.
As an optimized scheme of the embodiment of the present invention, please refer to fig. 5c, the expanding mandrel 2, the cold rolled blank 4, and the rolling wheel 1 are sequentially arranged along the height direction, and this arrangement may stably process the cold rolled blank 4.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A tower forging cold rolling forming method of an angular contact bearing is characterized by comprising the following steps:
s1, obtaining the volume and mass of the material needed by the molding of the inner and outer rings of the angular contact bearing;
s2, blanking, upsetting and tower forging forming to obtain a cold-rolled blank;
s3, placing the outer ring of the cold rolling blank between a rolling wheel of a cold rolling forming grinding tool and a rolling expansion mandrel to perform rolling expansion forming, wherein the rolling expansion forming is semi-closed cold rolling forming.
2. The method for forging and cold rolling a tapered bearing according to claim 1, wherein the step of obtaining the volume and mass of the material in the step S2 is specifically:
s20, according to the size of the finished product of the existing angular contact bearing, adding allowance on the basis of the size;
s21, designing an inner ring blank according to the characteristics of high-speed forging equipment, obtaining the size of the large outer diameter Dn1 of the inner ring, and simultaneously obtaining the small inner diameter dp2 of the outer ring blank which is Dn1-0.5mm, wherein 0.5mm is a blanking gap;
s22, dividing the section of the outer ring into two rectangular sections, following the law of constant volume, calculating the volume of the rectangle of the outer ring close to the inner ring to directly obtain the dimension of Dp, and similarly, calculating the inner diameter Dp2 of the rectangle of the outer ring far from the inner ring;
and S23, calculating the thickness of the material core connecting skin, forging demoulding angles and transition fillets, and obtaining the volume and the mass of the material required by the molding of the inner ring and the outer ring.
3. The method for cold swaging and rolling of angular contact bearing according to claim 2, wherein the step S20 is to increase the margin to be: the margin for increasing the outer diameter is between 0.5 and 0.6mm, the margin for increasing the inner diameter is between 0.6 and 0.7mm, and the margin for increasing the height is between 0.7 and 0.8 mm.
4. The method of claim 2, wherein in the step S22, the inner diameters of the two rectangles are connected by a circular arc, and the outer diameters of the two rectangles are kept consistent.
5. The method of claim 1, wherein the cold rolling comprises: and the cold-rolled blank is lower than the cold-rolled expanded molded outer ring by 0.2 mm.
6. The method of claim 1, wherein the cold rolling comprises: in the step S2, the inner and outer races are separated and simultaneously formed by the swaging process.
7. The method for cold swaging and rolling of an angular contact bearing according to claim 1, wherein in the step S2, the blanking is specifically: obtaining the blanking weight according to the data obtained in the step S1, selecting a proper bar stock according to the length-diameter ratio of 0.8-1.2, and then obtaining the blanking size; the upsetting specifically comprises the following steps: in order to facilitate cake forming, the upsetting diameter can be obtained by subtracting 1mm from the maximum outer diameter of a forged formed part, and the upsetting thickness is obtained according to a formula and the blanking weight.
8. The turret forging cold roll forming method of angular contact bearing according to claim 7, wherein the corresponding bar and blanking length are designed according to the high speed forging equipment characteristics, and the cake diameter and cake thickness are calculated according to the upsetting formula.
9. The method for cold swaging and expanding a tapered bearing according to claim 1, wherein in the step S3, the semi-closed cold swaging is performed in a manner that: and arranging a groove at the position of the rolling expanding mandrel corresponding to the step structure with the small inner diameter of the cold rolled blank, so that the groove is fixed to the step structure of the cold rolled blank, thereby controlling the axial movement of the cold rolled blank, and the large inner diameter of the cold rolled blank is not limited, thereby being beneficial to the stable molding of the blank.
10. The utility model provides a tower forging cold roll of angular contact bearing expands forming die, includes the rolling wheel and rolls and expand the dabber, its characterized in that: the rolling wheel with grind the outer lane that has the confession cold between the dabber and grind the blank and place and grind and expand the fashioned cold roll shaping interval, in it establishes the recess in the cold roll shaping interval, the rolling wheel grind expand the dabber and the recess forms semi-enclosed cold roll shaping structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910940699.2A CN110877085A (en) | 2019-09-30 | 2019-09-30 | Tower forging cold rolling forming method and die for angular contact bearing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910940699.2A CN110877085A (en) | 2019-09-30 | 2019-09-30 | Tower forging cold rolling forming method and die for angular contact bearing |
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| CN110877085A true CN110877085A (en) | 2020-03-13 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1961033A1 (en) * | 1969-12-05 | 1971-10-07 | Maschf Augsburg Nuernberg Ag | Sealing device on inking rollers for printing machines |
| CN102240760A (en) * | 2011-05-16 | 2011-11-16 | 天津天海精密锻造有限公司 | Process for ring rolling deep spigot type complex ring-shaped forged piece |
| CN102581204A (en) * | 2012-02-15 | 2012-07-18 | 黄石哈特贝尔精密锻造有限公司 | Turriform forming process of internal and external rings of first-generation hub bearing |
| CN103341577A (en) * | 2013-07-19 | 2013-10-09 | 黄石哈特贝尔精密锻造有限公司 | Cold ring rolling forming process for asymmetric shape of hub bearing outer ring and closed cold rolling forming die |
| CN206925149U (en) * | 2017-06-26 | 2018-01-26 | 常州市瑞宏轧辊有限公司 | Hot type pearlite ductile iron roll |
| CN210966790U (en) * | 2019-09-30 | 2020-07-10 | 黄石哈特贝尔精密锻造有限公司 | Tower forging cold-rolling and expanding forming die for angular contact bearing |
-
2019
- 2019-09-30 CN CN201910940699.2A patent/CN110877085A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1961033A1 (en) * | 1969-12-05 | 1971-10-07 | Maschf Augsburg Nuernberg Ag | Sealing device on inking rollers for printing machines |
| CN102240760A (en) * | 2011-05-16 | 2011-11-16 | 天津天海精密锻造有限公司 | Process for ring rolling deep spigot type complex ring-shaped forged piece |
| CN102581204A (en) * | 2012-02-15 | 2012-07-18 | 黄石哈特贝尔精密锻造有限公司 | Turriform forming process of internal and external rings of first-generation hub bearing |
| CN103341577A (en) * | 2013-07-19 | 2013-10-09 | 黄石哈特贝尔精密锻造有限公司 | Cold ring rolling forming process for asymmetric shape of hub bearing outer ring and closed cold rolling forming die |
| CN206925149U (en) * | 2017-06-26 | 2018-01-26 | 常州市瑞宏轧辊有限公司 | Hot type pearlite ductile iron roll |
| CN210966790U (en) * | 2019-09-30 | 2020-07-10 | 黄石哈特贝尔精密锻造有限公司 | Tower forging cold-rolling and expanding forming die for angular contact bearing |
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