CN115533458B - Design method of ball bearing outer ring forging piece with mounting edge - Google Patents

Design method of ball bearing outer ring forging piece with mounting edge Download PDF

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Publication number
CN115533458B
CN115533458B CN202211267468.8A CN202211267468A CN115533458B CN 115533458 B CN115533458 B CN 115533458B CN 202211267468 A CN202211267468 A CN 202211267468A CN 115533458 B CN115533458 B CN 115533458B
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ball bearing
bearing outer
outer ring
forging
mounting edge
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CN115533458A (en
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宗影影
周鹏文
杨万里
于清成
童锐
单德彬
郭斌
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Harbin Institute of Technology
AVIC Harbin Bearing Co Ltd
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Harbin Institute of Technology
AVIC Harbin Bearing Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B5/36—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes
    • B23B5/365—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes for toroidal surfaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention discloses a design method of a ball bearing outer ring forging piece with a mounting edge, and belongs to the field of ball bearing forging. The invention aims to solve the problems that the existing forging piece with the installation edge ball bearing outer ring has the phenomena of surface streamline outcrop and vortex at a channel and material waste. The method comprises the following steps: 1. designing the width of the ball bearing outer ring forging piece to be high; 2. designing the shape of a channel of the ball bearing outer ring forging; 3. designing the shape of a mounting edge forging; 4. excessive rounded corners and slopes are designed. The invention is used for designing the ball bearing outer ring forging piece with the mounting edge.

Description

Design method of ball bearing outer ring forging piece with mounting edge
Technical Field
The invention belongs to the field of ball bearing forging.
Background
At present, regarding forging of the ball bearing outer ring with the mounting edge, forging is firstly made into an annular part by blank making and rolling, and then a channel is turned at the inner diameter. This not only results in a significant amount of material waste at the outer diameter of the ring, but also causes the streamlines at the inner diameter channel to be cut by machining. The high-end bearing ring requires that the forged metal streamline is distributed on the stress surface of the parallel forging, and the main bearing force of the ball bearing ring is the position of a channel, so that the design principle of the forging is as follows: flow line outages and vortex phenomena at the channel surface should be avoided. In addition, when the forging is designed, the material utilization rate is fully considered, and the material utilization rate is improved.
Disclosure of Invention
The invention provides a design method of a ball bearing outer ring forging piece with a mounting edge, which aims to solve the problems that the existing forging piece with the ball bearing outer ring with the mounting edge has the phenomena of surface streamline outcrop and vortex at a channel and material waste.
The design method of the ball bearing outer ring forging piece with the mounting edge comprises the following steps:
1. designing the width of the ball bearing outer ring forging to be high:
the ball bearing outer ring part with the mounting edge is specifically that the mounting edge is arranged on the periphery of the ball bearing outer ring part along the circumferential direction, the width and height of the ball bearing outer ring forging piece are designed according to the ball bearing outer ring part, the width and height of the ball bearing outer ring part are H, the circle center of a channel is O, and the distances between the circle center of the channel O and the end faces of the upper end and the lower end of the ball bearing outer ring part are L respectively 1 L and L 2 Setting the width height h of the ball bearing outer ring forging piece, wherein the machining allowance of the single side of the ball bearing outer ring forging piece is d; when the center O of the channel is at the middle of the minor height H, L 1 ＝L 2 When the height of the ball bearing outer ring forging piece is H/2, the height of the ball bearing outer ring forging piece is h=H+2×d; when the center O of the channel is not in the middle of the auxiliary height H, L 1 ≠L 2 If L 2 ＞L 1 Width h=2×d+2×l of ball bearing outer ring forging 2 If L 1 ＞L 2 H=2×d+2×l of ball bearing outer race forging 1 ；
2. Designing the channel shape of the ball bearing outer ring forging piece:
designing the channel shape of the ball bearing outer ring forging according to the channel shape of the ball bearing outer ring part, wherein the channel circle center of the ball bearing outer ring forging coincides with the channel circle center of the ball bearing outer ring part, the channel radius of the ball bearing outer ring part is set as R, and the channel radius of the ball bearing outer ring forging is set as R, and r=R-d;
3. designing the shape of a mounting edge forging piece:
according to the design of the installation edge, the distance between the lower end surface of the installation edge and the lower end surface of the ball bearing outer ring part is M 1 The distance between the upper end face of the mounting edge and the upper end face of the ball bearing outer ring part is M 2 Setting the height of the mounting edge forging piece as m; when M 1 ≤M 2 Mounting edgeThe distance between the upper end face and the lower end face of the forging piece is M 1 Height m=h-2×m of the mounting side forging 1 The method comprises the steps of carrying out a first treatment on the surface of the When M 2 ＜M 1 The distance between the upper end face and the lower end face of the mounting edge forging piece and the upper end face and the lower end face of the ball bearing outer ring forging piece is M 2 Height m=h-2×m of the mounting side forging 2 ；
4. Designing excessive fillets and slopes:
and designing excessive fillets and slopes according to the simulation analysis of the rolling forming, so as to obtain the ball bearing outer ring forging with the mounting edge.
The beneficial effects of the invention are as follows:
the invention provides a design method of a ball bearing outer ring forging with a mounting edge, which realizes the random distribution of metal streamline of the channel part of the ball bearing outer ring forging with the mounting edge by analyzing and designing the channel and the special-shaped mounting edge, and improves the material utilization rate of the special-shaped mounting edge part at the outer diameter. The design requirement of the high-end bearing outer ring on the metal streamline can be met, meanwhile, materials are saved, and the manufacturing period is shortened.
The invention relates to a design method for a ball bearing outer ring forging with a mounting edge.
Drawings
FIG. 1 is a flow chart of the design of a ball bearing outer race forging with a mounting edge of the present invention;
FIG. 2 shows that the center O of the groove on the end face of the outer ring part of the ball bearing is at the middle of the minor height H, L 1 ＝L 2 Schematic structure when=h/2;
FIG. 3 shows that the center O of the groove on the end face of the outer ring part of the ball bearing is not in the middle of the minor height H, L 1 ≠L 2 A schematic structural diagram;
FIG. 4 is a schematic view of the structure of the end face of the outer ring part of the ball bearing with the mounting edge in step one of the present invention;
FIG. 5 is a schematic structural view of the rear end face of the forging shape of the mounting edge designed in the step three of the invention;
FIG. 6 is a schematic view of the structure of the rear end face with excessive rounded corners and slopes designed in step four of the present invention;
FIG. 7 is a schematic view of metal streamline distribution of an end face of a ball bearing outer ring forging with a mounting edge according to an embodiment I, 1 is a ball bearing outer ring part with a mounting edge;
FIG. 8 is a schematic diagram of metal streamline distribution of the end face of a ball bearing outer ring forging with a mounting edge designed in a comparative experiment, 1 is a ball bearing outer ring part with a mounting edge;
FIG. 9 is a schematic diagram of metal streamline distribution of the end face of a ball bearing outer ring forging with a mounting edge designed in a comparison experiment II, and 1 is a ball bearing outer ring part with a mounting edge;
FIG. 10 is a physical diagram of a ball bearing outer race forging with a mounting edge according to one embodiment;
FIG. 11 is a three-dimensional view of a ball bearing outer race forging with a mounting edge according to one embodiment;
FIG. 12 is a three-dimensional view of a ball bearing outer race part with a mounting edge in step one of the embodiment.
Detailed Description
The technical scheme of the invention is not limited to the specific embodiments listed below, but also includes any combination of the specific embodiments.
The first embodiment is as follows: referring to fig. 1 to 6, the design method of the ball bearing outer ring forging with the mounting edge according to the embodiment is carried out according to the following steps:
1. designing the width of the ball bearing outer ring forging to be high:
the ball bearing outer ring part with the mounting edge is specifically that the mounting edge is arranged on the periphery of the ball bearing outer ring part along the circumferential direction, the width and height of the ball bearing outer ring forging piece are designed according to the ball bearing outer ring part, the width and height of the ball bearing outer ring part are H, the circle center of a channel is O, and the distances between the circle center of the channel O and the end faces of the upper end and the lower end of the ball bearing outer ring part are L respectively 1 L and L 2 Setting the width height h of the ball bearing outer ring forging piece, wherein the machining allowance of the single side of the ball bearing outer ring forging piece is d; when the center O of the channel is at the middle of the minor height H, L 1 ＝L 2 When the height of the ball bearing outer ring forging piece is H/2, the height of the ball bearing outer ring forging piece is h=H+2×d; when the center O of the channel is not in the middle of the auxiliary height H, L 1 ≠L 2 If L 2 ＞L 1 Width h=2×d+2×l of ball bearing outer ring forging 2 If L 1 ＞L 2 H=2×d+2×l of ball bearing outer race forging 1 ；
2. Designing the channel shape of the ball bearing outer ring forging piece:
designing the channel shape of the ball bearing outer ring forging according to the channel shape of the ball bearing outer ring part, wherein the channel circle center of the ball bearing outer ring forging coincides with the channel circle center of the ball bearing outer ring part, the channel radius of the ball bearing outer ring part is set as R, and the channel radius of the ball bearing outer ring forging is set as R, and r=R-d;
3. designing the shape of a mounting edge forging piece:
according to the design of the installation edge, the distance between the lower end surface of the installation edge and the lower end surface of the ball bearing outer ring part is M 1 The distance between the upper end face of the mounting edge and the upper end face of the ball bearing outer ring part is M 2 Setting the height of the mounting edge forging piece as m; when M 1 ≤M 2 The distance between the upper end face and the lower end face of the mounting edge forging piece and the upper end face and the lower end face of the ball bearing outer ring forging piece is M 1 Height m=h-2×m of the mounting side forging 1 The method comprises the steps of carrying out a first treatment on the surface of the When M 2 ＜M 1 The distance between the upper end face and the lower end face of the mounting edge forging piece and the upper end face and the lower end face of the ball bearing outer ring forging piece is M 2 Height m=h-2×m of the mounting side forging 2 ；
4. Designing excessive fillets and slopes:
and designing excessive fillets and slopes according to the simulation analysis of the rolling forming, so as to obtain the ball bearing outer ring forging with the mounting edge.
And step four, designing excessive fillets and slopes to ensure that the metal filling of the forging is perfect in the rolling and forming process.
By designing the ring rolling mandrel as a boss and designing the ring rolling wheel as a specific shape, the channel at the inner diameter of the forging piece of the bearing outer ring and the mounting edge structure at the outer diameter are formed in the ring rolling process, so that the problems of low material utilization rate caused by the special-shaped structure of the mounting edge due to the fact that the channel is directly turned to generate streamline outcrop are avoided. Meanwhile, the working time of machining can be greatly reduced, and the production efficiency is improved.
The beneficial effects of this embodiment are:
according to the design method of the ball bearing outer ring forging with the mounting edge, through analysis design of the groove and the special-shaped mounting edge, metal streamline of the groove part of the ball bearing outer ring forging with the mounting edge is distributed along with the shape, and the material utilization rate of the special-shaped mounting edge part at the outer diameter part is improved. The design requirement of the high-end bearing outer ring on the metal streamline can be met, meanwhile, materials are saved, and the manufacturing period is shortened.
The second embodiment is as follows: the first difference between this embodiment and the specific embodiment is that: d is 2 mm-5 mm in the first step. The other is the same as in the first embodiment.
And a third specific embodiment: this embodiment differs from one or both of the embodiments in that: m described in step three 1 > 5mm. The other is the same as the first or second embodiment.
The specific embodiment IV is as follows: this embodiment differs from one of the first to third embodiments in that: m described in step three 2 > 5mm. The other embodiments are the same as those of the first to third embodiments.
Fifth embodiment: this embodiment differs from one to four embodiments in that: and in the third step, the machining allowance of the single side of the mounting edge forging piece is D, and D=d. The other embodiments are the same as those of the first to fourth embodiments.
Specific embodiment six: this embodiment differs from one of the first to fifth embodiments in that: in the fourth step, the design of the excessive fillet and the inclination are specifically that the design of the excessive fillet of the channel of the ball bearing outer ring forging and the inside of the ball bearing outer ring forging is R 1 Designing the excessive round angle of the periphery of the mounting edge forging and the ball bearing outer ring forging as R 2 And designing the inclination alpha of the mounting edge forging. The other embodiments are the same as those of the first to fifth embodiments.
Seventh embodiment: this embodiment differs from one of the first to sixth embodiments in that: said R is 1 < 3mm. The other embodiments are the same as those of the first to sixth embodiments.
Eighth embodiment: this embodiment modeThe differences from one of the embodiments one to seven are: r is less than 3mm 2 < 15mm. The other is the same as in embodiments one to seven.
Detailed description nine: this embodiment differs from one to eight of the embodiments in that: alpha is less than 10 DEG and 2 DEG. The others are the same as in embodiments one to eight.
Detailed description ten: this embodiment differs from one of the embodiments one to nine in that: and step four, the rolling shaping simulation analysis specifically adopts DEFORM software simulation analysis. The others are the same as in embodiments one to nine.
The following examples are used to verify the benefits of the present invention:
embodiment one:
the design method of the ball bearing outer ring forging piece with the mounting edge comprises the following steps:
1. designing the width of the ball bearing outer ring forging to be high:
the ball bearing outer ring part with the mounting edge is specifically that the mounting edge is arranged on the periphery of the ball bearing outer ring part along the circumferential direction, the width and height of the ball bearing outer ring forging piece are designed according to the ball bearing outer ring part, the width and height of the ball bearing outer ring part are H, the circle center of a channel is O, and the distances between the circle center of the channel O and the end faces of the upper end and the lower end of the ball bearing outer ring part are L respectively 1 L and L 2 Setting the width height h of the ball bearing outer ring forging piece, wherein the machining allowance of the single side of the ball bearing outer ring forging piece is d; the center O of the channel is not in the middle of the minor height H, L 1 ≠L 2 ，L 1 ＝19.5mm，L 2 =16.5 mm, d=3 mm, h=2×d+2×l of ball bearing outer race forging 1 ＝2×3+2×19.5＝45mm；
2. Designing the channel shape of the ball bearing outer ring forging piece:
designing the channel shape of a ball bearing outer ring forging according to the channel shape of the ball bearing outer ring part, wherein the channel center of the ball bearing outer ring forging coincides with the channel center of the ball bearing outer ring part, the channel radius of the ball bearing outer ring part is set as R, the channel radius of the ball bearing outer ring forging is set as R, R=11.4 mm, and r=R-d=11.4-3=8.4 mm;
3. designing the shape of a mounting edge forging piece:
according to the design of the installation edge, the distance between the lower end surface of the installation edge and the lower end surface of the ball bearing outer ring part is M 1 The distance between the upper end face of the mounting edge and the upper end face of the ball bearing outer ring part is M 2 Setting the height of the mounting edge forging piece as m; m is M 1 ＝8.5mm，M 2 The distance between the upper end face and the lower end face of the mounting edge forging piece and the upper end face and the lower end face of the ball bearing outer ring forging piece is M 1 Height m=h-2×m of the mounting side forging 1 ＝45-2×8.5＝28mm；
4. Designing excessive fillets and slopes:
and designing excessive fillets and slopes according to the simulation analysis of the rolling forming, so as to obtain the ball bearing outer ring forging with the mounting edge.
And in the third step, the machining allowance of the single side of the mounting edge forging piece is D, and D=d.
In the fourth step, the design of the excessive fillet and the inclination are specifically that the design of the excessive fillet of the channel of the ball bearing outer ring forging and the inside of the ball bearing outer ring forging is R 1 Designing the excessive round angle of the periphery of the mounting edge forging and the ball bearing outer ring forging as R 2 Designing the inclination alpha of the mounting edge forging; r is R 1 ＝2mm，R 2 ＝5mm，α＝4°。
And step four, the rolling shaping simulation analysis specifically adopts DEFORM software simulation analysis.
FIG. 7 is a schematic view of metal streamline distribution of an end face of a ball bearing outer ring forging with a mounting edge according to an embodiment I, 1 is a ball bearing outer ring part with a mounting edge; the metal streamline of the channel part is distributed along with the forging, and is distributed along with the shape of the channel of the ball bearing outer ring part with the mounting edge. The design of the installation edge part improves the utilization rate of materials on the basis of ensuring the random distribution of the metal streamline.
Cutting the ball bearing outer ring forging piece with the mounting edge designed in the first embodiment to obtain a ball bearing outer ring part with the mounting edge; FIG. 10 is a physical diagram of a ball bearing outer race forging with a mounting edge according to one embodiment; FIG. 11 is a three-dimensional view of a ball bearing outer race forging with a mounting edge according to one embodiment; FIG. 12 is a three-dimensional view of a ball bearing outer race part with a mounting edge in step one of the embodiment.
Comparative experiment one: the first difference between this comparative experiment and the example is: the method of rolling ring-shaped part is adopted to directly turn the part, and the channel and the mounting edge are not formed in the rolling process. The other is the same as in the first embodiment.
FIG. 8 is a schematic diagram of metal streamline distribution of the end face of a ball bearing outer ring forging with a mounting edge designed in a comparative experiment, 1 is a ball bearing outer ring part with a mounting edge; according to the first comparison experiment method, firstly, the phenomenon that the metal streamline at the channel is exposed appears, the metal streamline is unqualified, and secondly, the material utilization rate of the forging piece is low, so that the production benefit is influenced.
Comparison experiment II: the first difference between this comparative experiment and the example is: the ball bearing outer ring forging with the mounting edge and the ball bearing outer ring part with the mounting edge follow-up type ball bearing outer ring forging with the mounting edge are all in a gap with mechanical allowance d=3mm. The other is the same as in the first embodiment.
FIG. 9 is a schematic diagram of metal streamline distribution of the end face of a ball bearing outer ring forging with a mounting edge designed in a comparison experiment II, and 1 is a ball bearing outer ring part with a mounting edge; as can be seen from the figure, though the material utilization rate is greatly improved, the metal streamline at the channel part of the forging piece is easy to be exposed. After machining allowance is removed, the metal streamline of the groove part of the ball bearing outer ring part with the mounting edge is cut off, and the requirement of the high-end bearing on the metal streamline cannot be met.

Claims (10)

1. The design method of the ball bearing outer ring forging piece with the mounting edge is characterized by comprising the following steps of:
1. designing the width of the ball bearing outer ring forging to be high:
the ball bearing outer ring part with the mounting edge is specifically that the mounting edge is arranged on the periphery of the ball bearing outer ring part along the circumferential direction, the width and height of the ball bearing outer ring forging piece are designed according to the ball bearing outer ring part, the width and height of the ball bearing outer ring part are H, the circle center of a channel is O, and the distances between the circle center of the channel O and the end faces of the upper end and the lower end of the ball bearing outer ring part are L respectively 1 L and L 2 Ball bearingThe width h of the outer ring forging piece is equal to the machining allowance d of the single side of the ball bearing outer ring forging piece; when the center O of the channel is at the middle of the width H, L 1 ＝L 2 When the height of the ball bearing outer ring forging piece is H/2, the height of the ball bearing outer ring forging piece is h=H+2×d; when the channel circle center O is not in the middle of the width height H, L 1 ≠L 2 If L 2 ＞L 1 Width h=2×d+2×l of ball bearing outer ring forging 2 If L 1 ＞L 2 H=2×d+2×l of ball bearing outer race forging 1 ；
2. Designing the channel shape of the ball bearing outer ring forging piece:
designing the channel shape of the ball bearing outer ring forging according to the channel shape of the ball bearing outer ring part, wherein the channel circle center of the ball bearing outer ring forging coincides with the channel circle center of the ball bearing outer ring part, the channel radius of the ball bearing outer ring part is set as R, and the channel radius of the ball bearing outer ring forging is set as R, and r=R-d;
3. designing the shape of a mounting edge forging piece:
according to the design of the installation edge, the distance between the lower end surface of the installation edge and the lower end surface of the ball bearing outer ring part is M 1 The distance between the upper end face of the mounting edge and the upper end face of the ball bearing outer ring part is M 2 Setting the height of the mounting edge forging piece as m; when M 1 ≤M 2 The distance between the upper end face and the lower end face of the mounting edge forging piece and the upper end face and the lower end face of the ball bearing outer ring forging piece is M 1 Height m=h-2×m of the mounting side forging 1 The method comprises the steps of carrying out a first treatment on the surface of the When M 2 ＜M 1 The distance between the upper end face and the lower end face of the mounting edge forging piece and the upper end face and the lower end face of the ball bearing outer ring forging piece is M 2 Height m=h-2×m of the mounting side forging 2 ；
4. Designing excessive fillets and slopes:
and designing excessive fillets and slopes according to the simulation analysis of the rolling forming, so as to obtain the ball bearing outer ring forging with the mounting edge.
2. The method for designing a ball bearing outer race forging with a mounting edge according to claim 1, wherein d is 2mm to 5mm in the step one.
3. The method for designing a ball bearing outer race forging with a mounting edge according to claim 1, wherein M is as defined in step three 1 ＞5mm。
4. The method for designing a ball bearing outer race forging with a mounting edge according to claim 1, wherein M is as defined in step three 2 ＞5mm。
5. The method for designing a ball bearing outer race forging with a mounting rim according to claim 2, wherein the machining allowance of the single side of the mounting rim forging in the step three is D, and d=d.
6. The method for designing a ball bearing outer race forging with a mounting edge according to claim 1, wherein in the fourth step, the design of the excessive fillet and the inclination is specifically that the design of the excessive fillet of the ball bearing outer race forging channel and the inside of the ball bearing outer race forging is R 1 Designing the excessive round angle of the periphery of the mounting edge forging and the ball bearing outer ring forging as R 2 And designing the inclination alpha of the mounting edge forging.
7. The method for designing a ball bearing outer race forging with a mounting edge of claim 6, wherein R is 1 ＜3mm。
8. The method for designing a ball bearing outer race forging with a mounting edge of claim 6, wherein 3mm < R 2 ＜15mm。
9. The method of designing a ball bearing outer race forging with a mounting rim of claim 6, wherein 2 ° < α < 10 °.
10. The method for designing a ball bearing outer ring forging with a mounting edge according to claim 1, wherein the rolling forming simulation analysis in the fourth step specifically adopts a DEFORM software simulation analysis.
CN202211267468.8A 2022-10-17 2022-10-17 Design method of ball bearing outer ring forging piece with mounting edge Active CN115533458B (en)

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JPH11179472A (en) * 1997-12-22 1999-07-06 Toyota Motor Corp Blank process design method for forged parts
CN102886473B (en) * 2012-08-31 2014-06-18 太原科技大学 Method for determining dimension of ring casting-rolling combined formed blank
CN106002096B (en) * 2016-06-08 2018-07-31 中航工业哈尔滨轴承有限公司 A kind of M50 steel bearings lasso forging single fire forging method
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CN110961561B (en) * 2019-12-06 2021-08-03 陕西宏远航空锻造有限责任公司 Blank design method for improving forge piece structure uniformity
CN215110106U (en) * 2021-05-13 2021-12-10 浙江中集铸锻有限公司 Pre-formed piece in bearing ring forging process
CN114653870A (en) * 2022-03-11 2022-06-24 黄石哈特贝尔精密锻造有限公司 Forming die and process for paired cold rolling of eccentric groove bearing rings

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