CN112605324A - Precision forging device for automobile hub bearing and working method of precision forging device - Google Patents
Precision forging device for automobile hub bearing and working method of precision forging device Download PDFInfo
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- CN112605324A CN112605324A CN202011513560.9A CN202011513560A CN112605324A CN 112605324 A CN112605324 A CN 112605324A CN 202011513560 A CN202011513560 A CN 202011513560A CN 112605324 A CN112605324 A CN 112605324A
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- 238000005242 forging Methods 0.000 title claims abstract description 184
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 62
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 238000010008 shearing Methods 0.000 claims abstract description 26
- 238000007493 shaping process Methods 0.000 claims abstract description 21
- 238000005498 polishing Methods 0.000 claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 14
- 230000006698 induction Effects 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000009966 trimming Methods 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000003754 machining Methods 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 6
- 102220259718 rs34120878 Human genes 0.000 claims description 6
- 102220097517 rs876659265 Human genes 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 6
- 238000011161 development Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000005540 biological transmission Effects 0.000 description 1
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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
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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
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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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
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/12—Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
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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
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
Abstract
A precision forging device for an automobile hub bearing and a working method thereof comprise a precision bar shearing machine, a medium-frequency induction heating furnace, a multi-station forging forming machine, a trimming and shaping machine, a heat treatment machine and a surface polishing machine; the hub bearing material is sent to a medium-frequency induction heating furnace for heating through a robot after the precise blanking process of a precise bar shearing machine, then sent to a multi-station forging forming machine for precise forging forming through the robot after being heated, then sent to an edge cutting and shaping machine for edge cutting and shaping through the robot after being precisely forged and formed, sent to a heat treatment machine for normalizing treatment through the robot after being machined, and finally sent to a surface polishing machine for polishing through the robot to obtain the hub bearing. The precision forging device for the automobile hub bearing and the working method thereof have the advantages of reasonable structural design, simple working method, high automation degree, high production efficiency, stable product quality, high material utilization rate and wide application prospect.
Description
Technical Field
The invention belongs to the technical field of automobile hub bearing forging, and particularly relates to a precision forging device for an automobile hub bearing and a working method thereof.
Background
With the continuous progress of human society, automobiles are more and more entered into the lives of people, and China has become the first automobile production country and the largest automobile consumption country all over the world. With the continuous development of the automobile industry, the demand of high-precision and complex-shape forgings in automobile parts is larger and larger, and the traditional forging device cannot meet the production requirements of automobile part products. For the automobile manufacturing industry, the core of competition in the future is new product competition, and how to realize the development of automobile parts with low cost, short period and high quality is the key for gaining the automobile market. Under the circumstances, the development of a precision forging device, a forging working method and the like is particularly important for the production of novel automobile parts, and the advanced forging device design method plays a significant role in improving the design level of the automobile parts, shortening the development period of the parts and reducing the production cost.
With the development of the automobile industry, the wide popularization of front wheel drive automobiles, and the rapid development of the integrated technology of bearings and other parts. In order to meet the requirements of weight reduction, volume reduction and convenience in installation, a hub bearing is gradually developed into a hub bearing unit. In order to meet the requirements of different vehicle models, a wide variety of hub bearing units have emerged. However, as for the product composition structure, the main components are the inner ring and the outer ring. The hub bearing mainly serves as a bearing part and provides precise guidance for the transmission of the hub, and the hub bearing bears radial load and axial load. Because the hub bearing units are various in types, complicated in structural special shapes and high in dimensional accuracy requirement, a forging device adopting a single forging technology is not enough to meet the production requirement, and compared with a common die forging technology, the precision closed forging technology can obtain a forged piece with good surface quality, less machining allowance and higher dimensional accuracy, metal flow lines can be reasonably distributed along the outline of the part, the material utilization rate is improved, and near-net forming of the forged piece is realized. Therefore, it is necessary to develop a precision forging apparatus for an automobile hub bearing and a working method thereof to solve the above technical problems.
Chinese patent application No. CN201210333591.5 discloses a forging apparatus, which is a mold transfer machine having a base station for placing the above mold set, moving the mold set to a forging position, and forming a lower mold during forging, so as to improve the positioning accuracy of a large-sized heavy forged part and a mold, and does not solve the problems of low quality of the forging surface and low dimensional accuracy of an automobile hub bearing.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide the precision forging device for the automobile hub bearing and the working method thereof, the structural design is reasonable, the working method is simple, the precision forging device is used for the forging process in the bearing production, the defects of the forging device adopting a single forging technology in the prior art are overcome, the forged piece with good surface quality, less machining allowance and higher dimensional precision is obtained, the material utilization rate is improved, the near-net forming of the forged piece is realized, and the application prospect is wide.
The purpose of the invention is realized by the following technical scheme:
a precision forging device for an automobile hub bearing comprises a precision bar shearing machine, a medium-frequency induction heating furnace, a multi-station forging forming machine, a trimming and shaping machine, a heat treatment machine and a surface polishing machine; the hub bearing material is sent to a medium-frequency induction heating furnace for heating through a robot after the precise blanking process of a precise bar shearing machine, then sent to a multi-station forging forming machine for precise forging forming through the robot after being heated, then sent to an edge cutting and shaping machine for edge cutting and shaping through the robot after being precisely forged and formed, sent to a heat treatment machine for normalizing treatment through the robot after being machined, and finally sent to a surface polishing machine for polishing through the robot to obtain the hub bearing.
The precision forging device for the automobile hub bearing is reasonable in structural design, adopts a closed hot forging-warm finishing non-flash forging method, is operated by a robot, flexibly and automatically controlled and managed, and has the advantages of high automation degree, high production efficiency, stable product quality and high material utilization rate. The precision bar shearing machine can adopt a Japan Wanyang LBS450N precision bar shearing machine.
Further, according to the precision forging device for the automobile hub bearing, the multi-station forging forming machine adopts a clutch type screw press matched with a pre-forging die for pre-forging and a clutch type screw press matched with a finish-forging die for finish forging, the trimming shaper adopts a closed single-point press, and the clutch type screw press and an on-line closed single-point press adopt a robot to convey a forge piece in the middle.
The multi-station forging forming machine adopts a two-step forging process of primary forging and finish forging, a clutch type screw press is matched with a pre-forging die for pre-forging, the clutch type screw press is matched with a finish forging die for finish forging, a heated blank is forged into a pre-forging piece, because the temperature of the forging piece is high in the primary forging process and the deformation is easy, the loads of the forging piece and the primary forging die are small, the abrasion of the primary forging die is reduced, the forging piece after primary forging is easy to fill the finish forging die, the defect that the forging piece is not full of forging pieces is avoided, materials can be saved, the flow condition in the finish forging die is easy to fill, the folding of the forging piece is avoided, and the reasonable distribution and forming of subsequent forging pieces in the finish forging die are facilitated.
Further, in the precision forging device for the automobile hub bearing, the pre-forging die comprises a left die holder, a right die holder, a male die, a female die and a material ejecting mechanism, wherein a stamping head of the clutch type screw press is connected with the center of the outer surface of the left side of the left die holder, the male die is fixed on the surface of the right side of the left die holder, the right die holder is fixed on a die fixing seat of the clutch type screw press, the material ejecting mechanism is arranged on the right side of the right die holder, the female die is fixed on the surface of the left side of the right die holder, and the material ejecting mechanism penetrates through the right; the female die and the male die are arranged oppositely from left to right, and the cavity of the female die corresponds to the protruding part of the male die.
The finish forging die has a similar structure to the pre-forging die, the cavity of the female die and the protruding part of the male die are set according to the size of a hub bearing, the hub bearing comprises an inner ring and an outer ring, and the inner ring and the outer ring are separately forged.
Further, according to the precision forging device for the automobile hub bearing, the female die and the male die are of stepped structures, the female die and the male die are made of Crl2MoV, the quenching hardness reaches 58-62HRC, the male die and the left die holder are in interference fit, and the female die and the right die holder are in interference fit.
Further, foretell automobile wheel hub bearing's precision forging device, liftout mechanism includes annular ejector, push rod, bullet ejector, the left end and the push rod of bullet ejector are connected and the right-hand member is fixed on clutch formula screw press mould fixing base, the push rod has a plurality of, every the right-hand member of push rod is connected with the bullet ejector and the left end is connected with the annular ejector right-hand member of installing in right die base, annular ejector sets up at the die right flank.
In order to facilitate taking out of the stamping part, the stamping part is pushed out by an ejection device, a push rod and an annular ejection device.
Further, in the precision forging device for the automobile hub bearing, the pre-forging die further comprises a guide device.
Further, in the precision forging device for the automobile hub bearing, the guide device comprises an upper guide sleeve, an upper guide pillar, an upper guide sleeve and a lower guide pillar; an upper guide sleeve and a lower guide sleeve are respectively arranged on the upper side and the lower side in the left die base, and an upper guide sleeve matched with the upper guide sleeve and a lower guide pillar matched with the lower guide sleeve are respectively and fixedly arranged on the upper side and the lower side in the right die base.
The invention also relates to a working method of the precision forging device for the automobile hub bearing, which is characterized by sequentially comprising the following steps of:
(1) material quality detection: detecting the material quality of the hub bearing material;
(2) precision blanking: the hub bearing material is subjected to precision blanking through a precision bar shearing machine, wherein the hub bearing material is S53C and S55C and is subjected to cold shearing blanking through the precision bar shearing machine (1), the hub bearing material is 100Cr6 and SUJ2 and is subjected to hot shearing blanking through the precision bar shearing machine (1), and the blanking temperature is 500-600 ℃;
(3) heating: the price of the hub bearing material is priced by adopting an intermediate frequency induction heating furnace, wherein the heating temperature of the hub bearing material which is made of S53C and S55C is 1170-1180 ℃; the heating temperature of the hub bearing material of 100Cr6 and SUJ2 is 1050-;
(4) precision forging: after heating, the blank is conveyed to a multi-station forging forming machine through a robot to be precisely forged and formed;
(5) performing warm finishing: after precision forging and forming, conveying the material to an edge cutting and shaping machine through a robot for edge cutting and shaping, after machining, conveying the material to a heat treatment machine through the robot for normalizing, and finally conveying the material to a surface polishing machine through the robot for polishing to obtain a hub bearing;
(6) warehousing: and (4) carrying out product inspection on the hub bearing, cleaning qualified products, carrying out rust-proof typing, packaging and warehousing the qualified products, and recovering unqualified products.
Further, the working method of the precision forging device for the automobile hub bearing is characterized in that the multi-station forging forming machine is used for forging and forming the hub bearing of a revolving body structure, the clutch type screw press of the multi-station forging forming machine comprises four stations, and the four stations are one-time pre-forging forming, 2-time pre-forging forming, finish forging forming and continuous skin punching respectively.
Further, the working method of the precision forging device for the automobile hub bearing is characterized in that the multi-station forging forming machine is used for forging and forming the hub bearing of a non-revolving body structure, the clutch type screw press of the multi-station forging forming machine comprises three stations, and the three stations are one-time pre-forging forming, final forging forming and continuous skin punching.
Compared with the prior art, the invention has the following beneficial effects: the forging device has the advantages of high production efficiency, stable product quality and high material utilization rate, the obtained forged piece has good surface quality, less machining allowance and higher dimensional precision, the near-net forming of the forged piece is realized, and the application prospect is wide.
Drawings
FIG. 1 is a schematic overall arrangement diagram of a precision forging apparatus for an automobile hub bearing according to the present invention;
FIG. 2 is a schematic structural view of a pre-forging die of the precision forging device for the automobile hub bearing according to the present invention;
in the figure: the device comprises a precise bar shearing machine 1, a medium-frequency induction heating furnace 2, a multi-station forging forming machine 3, a trimming and shaping machine 3, a heat treatment machine 4, a surface polishing machine 5, a robot 6, a left die holder 11, a right die holder 12, a male die 13, a female die 14, a material ejecting mechanism 15, an annular ejector 151, a push rod 152, an ejection device 153, a guide device 16, an upper guide sleeve 161, an upper guide pillar 162, an upper guide sleeve 163 and a lower guide pillar 164.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying fig. 1-2, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 precision forging device for the automobile hub bearing with the structure shown in fig. 1 comprises a precision bar shearing machine 1, a medium-frequency induction heating furnace 2, a multi-station forging forming machine 3, an edge cutting and shaping machine 3, a heat treatment machine 4 and a surface polishing machine 5; the hub bearing material is sent to a medium-frequency induction heating furnace 2 for heating through a robot 6 after the precise blanking process of a precise bar shearing machine 1, then sent to a multi-station forging forming machine 3 for precise forging forming through the robot 6 after the heating is finished, sent to an edge cutting and shaping machine 3 for edge cutting and shaping machine processing through the robot 6 after the precise forging forming, sent to a heat treatment machine 4 for normalizing treatment through the robot 6 after the machining, and finally sent to a surface polishing machine 5 for polishing through the robot 6, so that the hub bearing is obtained.
In addition, the multi-station forging forming machine 3 adopts a clutch type screw press matched with a pre-forging die for pre-forging and a clutch type screw press matched with a finish-forging die for finish forging, the trimming and shaping machine 3 adopts a closed single-point press, and the clutch type screw press and an online closed single-point press are connected with a robot 6 in the middle for conveying a forged piece.
Further, as shown in fig. 2, the pre-forging die comprises a left die holder 11, a right die holder 12, a male die 13, a female die 14, and a material ejecting mechanism 15, wherein a stamping head of the clutch-type screw press is connected with the center of the outer surface of the left side of the left die holder 11, the male die 13 is fixed on the surface of the right side of the left die holder 11, the right die holder 12 is fixed on a fixed seat of the clutch-type screw press, the material ejecting mechanism 15 is arranged on the right side of the right die holder 12, the female die 14 is fixed on the surface of the left side of the right die holder 12, and the material ejecting mechanism 15 penetrates through the right die; the male die 13 and the female die 14 are arranged opposite to each other in the left-right direction and the cavity of the female die 14 corresponds to the protruding part of the male die 13.
In addition, the male die 13 and the female die 14 are of stepped structures, the male die 13 and the female die 14 are made of Crl2MoV, the quenching hardness reaches 58-62HRC, the male die 13 and the left die holder 11 are in interference fit, and the female die 14 and the right die holder 12 are in interference fit.
In addition, liftout mechanism 15 includes annular ejector 151, push rod 152, bullet ejector 153, the left end and the push rod 152 of bullet ejector 153 are connected and the right-hand member is fixed on clutch formula screw press mould fixing base, push rod 152 has a plurality of, every the right-hand member of push rod 152 is connected with bullet ejector 153 and the left end is connected with the annular ejector 151 right-hand member of installation in right die holder 12, annular ejector 151 sets up at the die 14 right flank.
Further, the pre-forging die further comprises a guide device 16. The guide device 16 comprises an upper guide sleeve 161, an upper guide pillar 162, an upper guide sleeve 163 and a lower guide pillar 164; an upper guide sleeve 161 and a lower guide sleeve 163 are respectively arranged on the inner upper side and the lower side of the left die holder 1, and an upper guide sleeve 163 matched with the upper guide sleeve 161 and a lower guide post 164 matched with the lower guide sleeve 163 are respectively and fixedly arranged on the inner upper side and the lower side of the right die holder 12.
Examples
The working method of the precision forging device for the automobile hub bearing sequentially comprises the following steps of:
(1) material quality detection: detecting the material quality of the hub bearing material;
(2) precision blanking: the hub bearing material is subjected to precision blanking through a precision bar shearing machine 1, wherein the hub bearing material is S53C and S55C and is subjected to cold shearing blanking of the precision bar shearing machine 1, the hub bearing material is 100Cr6 and SUJ2 and is subjected to hot shearing blanking of the precision bar shearing machine 1, and the blanking temperature is 500-600 ℃;
(3) heating: the price of the hub bearing material is priced by adopting an intermediate frequency induction heating furnace 2, wherein the heating temperature of the hub bearing material which is made of S53C and S55C is 1170-1180 ℃; the heating temperature of the hub bearing material of 100Cr6 and SUJ2 is 1050-;
(4) precision forging: after heating, the blank is conveyed to a multi-station forging forming machine 3 through a robot 6 to be precisely forged and formed;
(5) performing warm finishing: after precision forging and forming, conveying the material to an edge cutting and shaping machine 3 through a robot 6 for edge cutting and shaping machine processing, conveying the material to a heat treatment machine 4 through the robot 6 for normalizing after machining, and finally conveying the material to a surface polishing machine 5 through the robot 6 for polishing to obtain a hub bearing;
(6) warehousing: and (4) carrying out product inspection on the hub bearing, cleaning qualified products, carrying out rust-proof typing, packaging and warehousing the qualified products, and recovering unqualified products.
Further, the multi-station forging forming machine 3 is used for forging and forming a hub bearing of a revolving body structure, and the clutch type screw press of the multi-station forging forming machine 3 comprises four stations which are respectively one-time pre-forging forming, 2-time pre-forging forming, finish forging forming and continuous skin punching.
Further, the multi-station forging forming machine 3 is used for forging and forming a hub bearing of a non-revolving body structure, and the clutch type screw press of the multi-station forging forming machine 3 comprises three stations, wherein the three stations are one-time pre-forging forming, finish forging forming and continuous punching.
The precision forging device for the automobile hub bearing is reasonable in structural design, adopts a closed hot forging-warm finishing non-flash forging method, is operated by a robot, flexibly and automatically controlled and managed, and has the advantages of high automation degree, high production efficiency, stable product quality and high material utilization rate. The precision bar shear 1 may be a precision bar shear of LBS450N, wangyang, japan. The multi-station forging forming machine 3 adopts a two-step forging process of primary forging and finish forging, a clutch type screw press is matched with a pre-forging die for pre-forging, the clutch type screw press is matched with a finish forging die for finish forging, a heated blank is forged into a pre-forging piece, because the temperature of the forging piece is high in the primary forging process and the deformation is easy, the load of the forging piece and the primary forging die is small, the abrasion of the primary forging die is reduced, the forging piece after primary forging is easy to fill the finish forging die, the defect that the forging piece is not full of is avoided, materials can be saved, the flow condition in the finish forging die is easy to fill, the folding on the forging piece is avoided, and the reasonable distribution and forming of the subsequent forging piece in the finish forging die are facilitated.
In addition, the structure of the finish forging die is similar to that of the preforging die, the cavity of the female die and the protruding part of the male die are set according to the size of a hub bearing, the hub bearing comprises an inner ring and an outer ring, and the inner ring and the outer ring are separately forged.
The specific working method of the invention is many, and the above description is only the preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications can be made without departing from the principles of the invention and these modifications are to be considered within the scope of the invention.
Claims (10)
1. A precision forging device for an automobile hub bearing is characterized by comprising a precision bar shearing machine (1), a medium-frequency induction heating furnace (2), a multi-station forging forming machine (3), an edge cutting and shaping machine (3), a heat treatment machine (4) and a surface polishing machine (5); the hub bearing material is sent to a medium-frequency induction heating furnace (2) for heating through a robot (6) after the precise blanking process of a precise bar shearing machine (1), the hub bearing material is sent to a multi-station forging forming machine (3) for precise forging forming through the robot (6) after the heating is finished, the hub bearing material is sent to an edge cutting and shaping machine (3) for edge cutting and shaping machine processing through the robot (6) after the precise forging forming, the hub bearing material is sent to a heat treatment machine (4) for normalizing treatment through the robot (6) after the machining, and finally the hub bearing material is sent to a surface polishing machine (5) for polishing through the robot (6) to obtain the hub bearing.
2. The precision forging device for the automobile hub bearing according to claim 1, wherein the multi-station forging forming machine (3) adopts a clutch type screw press matched with a pre-forging die for pre-forging and a clutch type screw press matched with a finish-forging die for finish-forging, the trimming and shaping machine (3) adopts a closed single-point press, and the clutch type screw press and an online closed single-point press are connected in the middle of the closed single-point press and a robot (6) is adopted for conveying a forged piece.
3. The precision forging device for the automobile hub bearing according to claim 2, wherein the pre-forging die comprises a left die holder (11), a right die holder (12), a male die (13), a female die (14) and a material ejecting mechanism (15), a stamping head of the clutch type screw press is connected with the center of the outer surface of the left side of the left die holder (11), the male die (13) is fixed on the right side surface of the left die holder (11), the right die holder (12) is fixed on a fixed seat of the clutch type screw press die, the material ejecting mechanism (15) is arranged on the right side of the right die holder (12), the female die (14) is fixed on the left surface of the right die holder (12), and the material ejecting mechanism (15) penetrates through the right die holder (12) to be connected with the right side of the female; the male die (13) and the female die (14) are oppositely arranged at the left and the right, and the cavity of the female die (14) corresponds to the protruding part of the male die (13).
4. The precision forging device for the automobile hub bearing according to claim 3, wherein the male die (13) and the female die (14) are of stepped structures, the male die (13) and the female die (14) are made of Crl2MoV and have quenching hardness of 58-62HRC, the male die (13) and the left die holder (11) are in interference fit, and the female die (14) and the right die holder (12) are in interference fit.
5. The precision forging device for the automobile hub bearing according to claim 4, wherein the ejection mechanism (15) comprises an annular ejector (151), a push rod (152) and an ejection ejector (153), the left end of the ejection ejector (153) is connected with the push rod (152) and the right end of the ejection ejector is fixed on a clutch type screw press die fixing seat, the push rod (152) is provided with a plurality of parts, each push rod (152) is connected with the ejection ejector (153) at the right end and connected with the right end of the annular ejector (151) installed in the right die holder (12) at the left end, and the annular ejector (151) is arranged on the right side face of the female die (14).
6. The precision forging apparatus for automobile hub bearings according to claim 5, wherein the pre-forging die further comprises a guide device (16).
7. The precision forging device for the automobile hub bearing according to claim 6, wherein the guide device (16) comprises an upper guide sleeve (161), an upper guide post (162), an upper guide sleeve (163) and a lower guide post (164); an upper guide sleeve (161) and a lower guide sleeve (163) are respectively arranged on the inner upper side and the lower side of the left die holder (1), and an upper guide sleeve (163) matched with the upper guide sleeve (161) and a lower guide pillar (164) matched with the lower guide sleeve (163) are respectively and fixedly arranged on the inner upper side and the lower side of the right die holder (12).
8. The working method of the precision forging device for the automobile hub bearing according to any one of claims 1 to 7, characterized by comprising the following steps in sequence:
(1) material quality detection: detecting the material quality of the hub bearing material;
(2) precision blanking: the hub bearing material is subjected to precision blanking through a precision bar shearing machine (1), wherein the hub bearing material is S53C and S55C and is subjected to cold shearing blanking of the precision bar shearing machine (1), the hub bearing material is 100Cr6 and SUJ2 and is subjected to hot shearing blanking of the precision bar shearing machine (1), and the blanking temperature is 500-;
(3) heating: the price of the hub bearing material is priced by adopting an intermediate frequency induction heating furnace (2), wherein the heating temperature of the hub bearing material which is made of S53C and S55C is 1170-1180 ℃; the heating temperature of the hub bearing material of 100Cr6 and SUJ2 is 1050-;
(4) precision forging: after heating, the blank is conveyed to a multi-station forging forming machine (3) through a robot (6) for precision forging forming;
(5) performing warm finishing: after precision forging and forming, conveying the material to a trimming and shaping machine (3) through a robot (6) for trimming and shaping, after machining, conveying the material to a heat treatment machine (4) through the robot (6) for normalizing, and finally conveying the material to a surface polishing machine (5) through the robot (6) for polishing to obtain a hub bearing;
(6) warehousing: and (4) carrying out product inspection on the hub bearing, cleaning qualified products, carrying out rust-proof typing, packaging and warehousing the qualified products, and recovering unqualified products.
9. The working method of the precision forging device for the automobile hub bearing according to claim 8, wherein the multi-station forging forming machine (3) is used for forging and forming the hub bearing of a revolving body structure, the clutch type screw press of the multi-station forging forming machine (3) comprises four stations, and the four stations are one-time pre-forging forming, 2-time pre-forging forming, final forging forming and skin punching respectively.
10. The working method of the precision forging device for the automobile hub bearing according to claim 8, wherein the multi-station forging forming machine (3) is used for forging and forming the hub bearing of a non-revolving body structure, and the clutch type screw press of the multi-station forging forming machine (3) comprises three stations, wherein the three stations are one-time pre-forging forming, finish forging forming and continuous skin punching.
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