CN110625054A - Long-axis gear precision forming device with boss - Google Patents
Long-axis gear precision forming device with boss Download PDFInfo
- Publication number
- CN110625054A CN110625054A CN201910910235.7A CN201910910235A CN110625054A CN 110625054 A CN110625054 A CN 110625054A CN 201910910235 A CN201910910235 A CN 201910910235A CN 110625054 A CN110625054 A CN 110625054A
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- long shaft
- die
- boss
- die assembly
- punch
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention provides a long shaft gear precision forming device with a boss, which comprises an upper closed die assembly, a lower closed die assembly, a left extrusion die assembly and a right extrusion die assembly which are arranged on a four-direction forming press together; the device can realize the single-pass hot forging integral forming of the gear forging stock with the long shaft and the boss of the long shaft, and can simultaneously form the spoke and the boss of the long shaft, thereby overcoming the problem of difficult demoulding of the forging and avoiding the defects of split forming or multi-pass forming; the device can take shape the spoke part, has kept reasonable forging streamline distribution, can effectively improve the mechanical properties of this part, has realized the no overlap forging of this part simultaneously, can practice thrift metal material, improves material utilization ratio, and forging product machining allowance is little simultaneously, reduces follow-up machining cost.
Description
Technical Field
The invention belongs to the technical field of metal piece pressure processing, and particularly relates to a long shaft gear precision forming device with a boss.
Background
The long shaft gear with the boss is mainly used in the speed changers of heavy and medium trucks and buses, and serves as an important part for transmitting torque in the speed changers, the rigidity and the strength of the part have great influence on the transmission performance, and if the part does not meet the mechanical performance standards in the using process, serious safety accidents can be caused due to the phenomenon of shaft breakage or tooth breakage. The existing common processing means of the part is to design the part into a split structure, separately forge a long shaft part with a boss and a spoke fluted disc part with a belt wheel, and weld the part for use after the mechanical processing is finished. If a part is forged and formed as an integral structure, because the boss is arranged at the long shaft, and the disc tooth with the spoke is arranged at one end of the long shaft, the boss and the spoke on the long shaft are generally difficult to be simultaneously formed by a common open die forging method and a closed upsetting and extruding method, and because the structure is difficult to enable a forge piece to be smoothly demoulded, the boss and the spoke part of the long shaft can be formed by mechanical turning after the rough shape is forged, reasonable forging flow lines cannot be reserved by the processing method, and because the forging flow lines are cut off by mechanical turning, the mechanical performance of the part is greatly reduced, and the metal waste is very serious. In order to retain the forging flow line of the part, improve the mechanical property of the product and achieve the aim of energy-saving and material-saving green manufacturing, a novel forging process and a novel device which can ensure the forming of the shaft boss and the spoke part are needed to achieve the forming of the part.
Disclosure of Invention
The invention aims to provide a precision forming device for a long shaft gear with a boss, which can be used for integrally forming a long shaft gear forging with the boss by carrying out single-pass hot forging on a metal bar.
In order to achieve the purpose, the invention adopts the technical scheme that: a long shaft gear precision forming device with a boss comprises a long shaft, a disc tooth arranged at one end of the long shaft and provided with a spoke, and a boss arranged at the other end of the long shaft, wherein the precision forming device is used for forging a horizontally placed material rod to form the long shaft gear and comprises an upper die closing die assembly, a lower die closing die assembly, a left extrusion die assembly and a right extrusion die assembly;
the upper die closing die assembly and the lower die closing die assembly are the same in structure and are symmetrically arranged on the upper side and the lower side of the material rod, wherein the upper die closing die assembly and the lower die closing die assembly respectively comprise a die plate and a die holder fixedly arranged on the inner side of the die plate, a left female die, a middle female die and a right female die are sequentially arranged in a die cavity of the die holder from left to right, the longitudinal section of the middle female die is of a structure in a length of ten, a spoke protrusion I matched with the inner side of the bottom of a spoke is arranged at the end part of one shorter side of the structure in the length of ten, and the bottom end of the right female die is positioned on the inner side of the bottom end;
the left extrusion die assembly and the right extrusion die assembly are symmetrically arranged on the left side and the right side of the material rod; the left extrusion die assembly comprises a left punch and a left punch connecting rod connected with the left punch, a long shaft groove I matched with the top end of a long shaft is formed in one end, far away from the left punch connecting rod, of the left punch, and spoke protrusions II matched with the inner side of the top of a spoke are arranged on the periphery of the long shaft groove I;
the right extrusion die assembly comprises a right punch and a right punch connecting rod connected with the right punch, and a long shaft groove II matched with the bottom end of a long shaft is formed in one end, far away from the right punch connecting rod, of the right punch.
Furthermore, the die holders of the upper die closing die assembly and the lower die closing die assembly are internally provided with thrust grooves which are arranged along the horizontal direction and used for mounting the thrust assembly, one end of each thrust groove is communicated with a step through groove arranged along the vertical direction, each thrust assembly comprises a hydraulic cylinder, an inclined block, a push block and a T-shaped thrust plate, the hydraulic cylinders, the inclined blocks and the push blocks are sequentially arranged in the thrust grooves, the output end of the hydraulic cylinder is connected with one end of the inclined block, the other end of the inclined block is tightly contacted with the push block, and the end surfaces of the inclined block and the push block which are contacted with each other are provided with mutually matched inclined surfaces;
the top that the groove was led to the step is provided with a plurality of halfpace, and the thrust plate setting that is the T type is led to the groove at the step and is contacted with the ejector pad, is provided with reset spring between the thrust plate that is the T type and one of them halfpace, and when pneumatic cylinder stop work, the thrust plate returns to the logical inslot of step under reset spring's effect.
Furthermore, the head of the thrust plate is provided with a semicircular groove matched with the size of the material rod.
Further, the head thickness of the thrust plate is larger than the height of the spoke protrusion I.
Furthermore, the reset spring is a reset nitrogen spring.
Furthermore, a guide groove used for positioning the inclined block is formed in the bottom of the thrust groove along the horizontal direction, and a sliding block matched with the guide groove is integrally arranged at the bottom of the inclined block.
Furthermore, the width of the push block is larger than the width of the tail part of the T-shaped thrust plate.
Furthermore, the left punch is connected with the left punch connecting rod through a dovetail structure, and a left punch pressing plate is arranged at the joint and fixedly connected with the left punch connecting rod through a screw so as to prevent the left punch from moving in the vertical direction;
the right punch and the right punch connecting rod are connected in a positioned mode through the stepped holes, a right punch cover plate is arranged at the joint, and the right punch cover plate fixes the right punch to the right punch connecting rod through screws so as to prevent the right punch from moving in the vertical direction.
Furthermore, the upper mold closing mold assembly, the lower mold closing mold assembly, the left extrusion mold assembly and the right extrusion mold assembly are jointly installed on the four-direction forming press.
Compared with the prior art, the invention has the beneficial effects that: the device can realize the single-pass hot forging integral forming of the gear forging stock with the long shaft and the boss of the long shaft, and can simultaneously form the spoke and the boss of the long shaft, thereby overcoming the problem of difficult demoulding of the forging and avoiding the defects of split forming or multi-pass forming; the device can take shape the spoke part, has kept reasonable forging streamline distribution, can effectively improve the mechanical properties of this part, has realized the no overlap forging of this part simultaneously, can practice thrift metal material, improves material utilization ratio, and forging product machining allowance is little simultaneously, reduces follow-up machining cost.
Drawings
FIG. 1 is a schematic view of the overall construction of a long axis gear produced by the present invention;
FIG. 2 is a schematic view of the overall structure of a long-axis gear precision forming device with a boss;
FIG. 3 is a top view of a precision forming apparatus for long-axis gears with bosses;
FIG. 4 is a schematic view of a long-axis gear precision forming device with a boss in a forming state;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2;
the labels in the figure are: 1. the stamping die comprises a lower die plate, 2, a lower right female die, 3, a lower die holder, 4, a lower thrust plate, 5, a lower pushing block, 6, a lower return spring, 7, a lower inclined block, 8, a lower middle female die, 9, a lower hydraulic cylinder, 10, a lower left female die, 11, a left punch, 12, a left punch press plate, 13, a left punch connecting rod, 14, a bar, 15, an upper left female die, 16, an upper die holder, 17, an upper hydraulic cylinder, 18, an upper die plate, 19, an upper inclined block, 20, an upper pushing block, 21, an upper stop pushing plate, 22, an upper return spring, 23, an upper middle female die, 24, an upper right female die, 25, a right punch connecting rod, 26, a right punch, 27, a right punch cover plate, 28, a long shaft, 29, disk teeth, 30, a spoke, 31 and a boss.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the long axis gear produced by the present invention includes a long axis 28, disc teeth 29 provided at one end of the long axis and having spokes 30, and a boss 31 provided at the other end of the long axis, and the precision forming apparatus is used to forge a horizontally placed bar 14 to form the long axis gear.
As shown in fig. 2 and 3, a precision forming device for a long-axis gear with a boss comprises an upper mold closing die assembly, a lower mold closing die assembly, a left extrusion die assembly and a right extrusion die assembly; the upper closed die assembly comprises: an upper die plate 18 used for being connected with an upper sliding block of a press and an upper die holder 16 fixedly arranged on the upper die plate 18, as shown in fig. 5, a semicircular upper left female die 15, an upper middle female die 23 and an upper right female die 24 which are fixed by screws are arranged in a die cavity of the upper die holder, a thrust groove used for installing an upper hydraulic cylinder 17 is arranged at the top of the upper die holder 16, an output end (cylinder column) of the upper hydraulic cylinder 17 acts on an upper inclined block 19, the inclined plane of the upper inclined block 19 is matched and contacted with the inclined plane of the upper push block 20, a T-shaped upper push plate 21 is contacted with the upper push block 20, an upper return spring 22 is arranged between two shoulders of the thrust plate 21 and one of the terraces of the stepped through grooves, the upper push plate 21 penetrates through the upper middle female die 23 and the upper right female die 24, and a semicircular groove suitable for the size of a forge; the lower closed die mold assembly comprises: the die comprises a lower die plate 1 used for being connected with a press table surface and a lower die holder 3 fixedly arranged on the lower die plate 1, wherein a semicircular lower left female die 10, a semicircular lower middle female die 8 and a semicircular lower right female die 2 which are fixed by screws are arranged in a die cavity of the lower die holder, a groove is formed in the lower part of the lower die holder 3 and used for mounting a lower hydraulic cylinder 9, an output end (cylinder column) of the lower hydraulic cylinder 9 acts on a lower inclined block 7, the inclined surface of the lower inclined block 7 is contacted with the inclined surface of a lower push block 5, a T-shaped lower thrust plate 4 is contacted with the lower push block 5, a lower reset spring 6 is arranged between two shoulders of the T-shaped lower thrust plate 4 and one of terraces of step through grooves, and the head of the T-shaped lower thrust plate 4 is provided with a; left side extrusion die subassembly includes: the left punch head connecting rod 13 is connected to a left hydraulic cylinder of the press, the left punch head 11 is connected with the left punch head connecting rod 13 through a dovetail structure, a left punch head pressing plate 12 is arranged at the joint, and the left punch head pressing plate 12 is fixedly arranged on the left punch head connecting rod 13 through a screw to prevent the punch head from moving in the vertical direction; the right extrusion die assembly includes: and a right punch head connecting rod 25 connected with a right hydraulic cylinder of the press, wherein the right punch head 26 and the right punch head connecting rod 25 are positioned through a stepped hole, and a right punch head cover plate 27 fixes the right punch head 26 on the right punch head connecting rod through a screw so as to prevent the punch head from moving vertically.
According to the scheme, the inner side of the thrust groove is provided with a guide groove for positioning the upper inclined block 19 and the lower inclined block 7, the bottoms of the upper inclined block 19 and the lower inclined block 7 are integrally provided with sliding blocks capable of sliding in the guide groove, and the structure can effectively prevent the phenomenon that the upper inclined block is pushed by the upper hydraulic cylinder 17 to exceed the required stroke to cause excessive extrusion of the upper inclined push plate 21; the upper push block 20 is installed in a step through groove of the upper die base 16, the width of the upper push block 20 is larger than the width of the tail part of the upper stop push plate 21, and a plurality of terraces are arranged at the top end of the step through groove and play a role in positioning and guiding the upper push block 20. The thrust groove of the lower die holder 3 for mounting the lower hydraulic cylinder 9 is internally provided with a guide groove for positioning the lower inclined block 7, and the bottom of the lower inclined block is integrally provided with a sliding block capable of sliding in the guide groove, so that the structure can effectively prevent the phenomenon that the lower thrust plate 4 is excessively extruded when the lower hydraulic cylinder 9 pushes the lower inclined block 7 to exceed the required stroke; the lower push block 5 is arranged in a through groove of a vertical step of the lower die holder 3, the width of the lower push block 5 is larger than that of the tail part of the lower thrust plate 4, and the lower push block 5 plays a role in positioning and guiding.
In order to achieve the best use effect, when the invention is used, the output force provided by the upper hydraulic cylinder 17 and the lower hydraulic cylinder 9 is larger than the sum of the acting force of the forge piece (the material bar 14) on the upper thrust plate and the lower thrust plate and the compression force of the upper return spring and the lower return spring in the forming process of the forge piece, so that the push plate is prevented from retreating when the forming process is stopped.
According to the scheme, when the hydraulic cylinders 17 and 9 stop working, the thrust plates 21 and 4 return to the step through grooves under the action of the return springs 22 and 6, so that the upper thrust plate 21 and the lower thrust plate 4 do not interfere with the boss 31 of the long-axis gear after forming, and the boss 31 of the forged piece can freely move leftwards after forming.
Further optimize this scheme, go up the head thickness of end push pedal 21 and lower thrust plate 4 and need be greater than the protruding height of I of spoke to make the head thickness of upper and lower thrust plate be greater than the inboard degree of depth in spoke 30 bottom of major axis gear, so that when forging (stub bar 14) demolding right drift with the forging ejecting protruding I of spoke of die in upper and lower.
Further optimizing the scheme, the diameters of the die cavities of the upper left female die 15, the lower left female die 10, the upper middle female die 23 and the lower middle female die 8 are 0.8-1.0mm larger than the outer diameter of the left punch 11, and the diameters of the die cavities of the upper right female die 24 and the lower right female die 2 are 0.6-0.8mm larger than the outer diameter of the right punch 26. The arrangement can ensure that the left punch and the right punch can freely move left and right, and simultaneously avoid the occurrence of flash in forging. The clearance between the rectangular holes formed by the upper and lower middle female dies and the upper and lower right female dies and the thrust plate for passing through the upper and lower thrust plates is within the range of 0.1-0.3mm, and the arrangement can ensure the thrust plate to freely move up and down and simultaneously avoid burrs from being produced during forging.
The forming principle and the process steps of the invention are as follows:
firstly, heating the bar 14 to 1100-1180 ℃, then placing the bar into a lower die assembly, extruding a right punch connecting rod 25 by a hydraulic cylinder on the right side of a press, and stopping extrusion after a right punch 26 is contacted with the end face of the bar 14; the main cylinder of the vertical direction of the press moves downwards to drive the upper die assembly mould component to move downwards, the upper die assembly mould component and the lower die assembly mould component form a closed mould cavity after contacting, at the moment, the main cylinder of the press ensures certain die assembly force, the left hydraulic cylinder and the right hydraulic cylinder of the press move towards the middle, so that the left punch and the right punch extrude a metal bar 14, the upper hydraulic cylinder 17 and the lower hydraulic cylinder 9 are always kept in a pressurized state in the extrusion process, the upper thrust plate and the lower thrust plate are ensured not to retreat due to the metal acting force, when the left punch and the right punch simultaneously extrude to the specified positions, the extrusion is stopped, at the moment, the state schematic diagram of the invention is shown in figure 4, then the main cylinder of the press decompresses, the upper hydraulic cylinder decompresses, the lower hydraulic cylinder decompresses, the upper return spring 22 and the lower return spring 6 respectively act on the upper stop push plate 22 and the lower thrust plate 4, so that the upper thrust plate and the lower thrust plate retreat, the right punch 26 moves leftwards for a certain distance, and the distance is greater than the depth of the inner side of the bottom of the spoke 30 of the long shaft gear; then the main cylinder of the press moves upwards to open the upper die and the lower die, and the left punch and the right punch are reset under the driving of the left hydraulic cylinder and the right hydraulic cylinder of the press; after the forge piece is taken out, the upper hydraulic cylinder and the lower hydraulic cylinder are pressurized to reset the upper stop push plate 22 and the lower thrust plate 4, and the actions are repeated after the bar 14 is put in.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A long shaft gear precision forming device with a boss comprises a long shaft (28), a disc tooth (29) arranged at one end of the long shaft and provided with a spoke (30), and a boss (31) arranged at the other end of the long shaft, wherein the precision forming device is used for forging a horizontally placed material rod (14) to form the long shaft gear, and comprises an upper closed die assembly, a lower closed die assembly, a left extrusion die assembly and a right extrusion die assembly, and is characterized in that:
the upper die closing die assembly and the lower die closing die assembly are identical in structure and are symmetrically arranged on the upper side and the lower side of a material bar (14), each of the upper die closing die assembly and the lower die closing die assembly comprises a die plate (18, 1) and a die holder (16, 3) fixedly arranged on the inner side of the die plate, a left female die (15, 10), a middle female die (23, 8) and a right female die (24, 2) are sequentially arranged in a die cavity of the die holders (16, 3) from left to right, the longitudinal section of each of the middle female dies (23, 8) is of a structure in degrees, a spoke protrusion I matched with the inner side of the bottom of a spoke (30) is arranged at the end of one shorter side of the structure in degrees, and the bottom end of each of the right female dies (24, 2) is positioned on the inner side of the bottom end of each of the middle female dies (;
the left extrusion die assembly and the right extrusion die assembly are symmetrically arranged on the left side and the right side of the material rod (14); the left extrusion die assembly comprises a left punch (11) and a left punch connecting rod (13) connected with the left punch, a long shaft groove I matched with the top end of a long shaft (28) is formed in one end, far away from the left punch connecting rod (13), of the left punch (11), and spoke protrusions II matched with the inner side of the top of a spoke (30) are arranged on the periphery of the long shaft groove I;
the right extrusion die assembly comprises a right punch (26) and a right punch connecting rod (25) connected with the right punch, and a long shaft groove II matched with the bottom end of the long shaft (28) is formed in one end, far away from the right punch connecting rod (25), of the right punch (26).
2. The precision forming device for the long shaft gear with the boss as claimed in claim 1, wherein: the die holders (16, 3) of the upper die closing die assembly and the lower die closing die assembly are internally provided with thrust grooves which are arranged along the horizontal direction and used for mounting the thrust assemblies, one ends of the thrust grooves are communicated with step through grooves arranged along the vertical direction, each thrust assembly comprises a hydraulic cylinder (17, 9), an inclined block (19, 7), a push block (20, 5) and a T-shaped thrust plate (21, 4), the hydraulic cylinders (17, 9), the inclined blocks (19, 7) and the push blocks (20, 5) are sequentially arranged in the thrust grooves, the output ends of the hydraulic cylinders (17, 9) are connected with one ends of the inclined blocks (19, 7), the other ends of the inclined blocks (19, 7) are in close contact with the push blocks (20, 5), and the end faces of the inclined blocks (19, 7) which are in contact with the push blocks (20, 5) are provided with inclined planes which;
the top that the groove was led to the step is provided with a plurality of halfpace, and thrust plate (21, 4) that are the T type set up the top that the groove was led to the step and contact with ejector pad (20, 5), are provided with reset spring (22, 6) between thrust plate (21, 4) that are the T type and one of them halfpace, when pneumatic cylinder (17, 9) stop work, thrust plate (21, 4) return to the inslot that the step led to the step under reset spring (22, 6) effect.
3. The precision forming device for the long shaft gear with the boss as claimed in claim 2, wherein: the head parts of the thrust plates (21, 4) are provided with semicircular grooves matched with the size of the material rod (14).
4. The precision forming device for the long shaft gear with the boss as claimed in claim 3, wherein: the head thickness of the thrust plates (21, 4) is larger than the height of the spoke protrusion I.
5. The precision forming device for the long shaft gear with the boss as claimed in claim 2, wherein: the return springs (22 and 6) are return nitrogen springs.
6. The precision forming device for the long shaft gear with the boss as claimed in claim 2, wherein: the bottom of the thrust groove is provided with a guide groove used for positioning the inclined blocks (19 and 7) along the horizontal direction, and the bottoms of the inclined blocks (19 and 7) are integrally provided with sliding blocks matched with the guide groove.
7. The precision forming device for the long shaft gear with the boss as claimed in claim 2, wherein: the width of the push blocks (20, 5) is larger than the width of the tail parts of the T-shaped thrust plates (21, 4).
8. The precision forming device for the long shaft gear with the boss as claimed in claim 1, wherein: the left punch head (11) is connected with a left punch head connecting rod (13) through a dovetail structure, a left punch head pressing plate (12) is arranged at the joint, and the left punch head pressing plate (12) is fixedly connected with the left punch head connecting rod (13) through a screw so as to prevent the left punch head (11) from moving in the vertical direction;
the right punch head (26) and the right punch head connecting rod (25) are positioned and connected through stepped holes, a right punch head cover plate (27) is arranged at the connecting position, and the right punch head cover plate (27) fixes the right punch head (26) to the right punch head connecting rod (25) through screws so as to prevent the right punch head (26) from moving in the vertical direction.
9. The precision forming device for the long shaft gear with the boss as claimed in claim 1, wherein: the upper mold closing mold assembly, the lower mold closing mold assembly, the left extrusion mold assembly and the right extrusion mold assembly are jointly installed on the four-direction forming press.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910235.7A CN110625054B (en) | 2019-09-25 | 2019-09-25 | Long-axis gear precision forming device with boss |
| ZA2020/05859A ZA202005859B (en) | 2019-09-25 | 2020-09-22 | Precision forming device producing long shaft gear having boss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910235.7A CN110625054B (en) | 2019-09-25 | 2019-09-25 | Long-axis gear precision forming device with boss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110625054A true CN110625054A (en) | 2019-12-31 |
| CN110625054B CN110625054B (en) | 2021-01-22 |
Family
ID=68974193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910910235.7A Active CN110625054B (en) | 2019-09-25 | 2019-09-25 | Long-axis gear precision forming device with boss |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110625054B (en) |
| ZA (1) | ZA202005859B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117399555A (en) * | 2023-12-14 | 2024-01-16 | 山西东泰重工锻压有限公司 | Shaft forging and forging equipment and forging method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH033726A (en) * | 1989-06-01 | 1991-01-09 | Aisin Seiki Co Ltd | Method of manufacturing helical gear cold stamping die |
| JPH0679392A (en) * | 1992-08-31 | 1994-03-22 | Aichi Steel Works Ltd | Gear forging method |
| JP2001105091A (en) * | 1999-09-30 | 2001-04-17 | Musashi Seimitsu Ind Co Ltd | Forge-forming method of formed product with dog teeth |
| KR100818012B1 (en) * | 2006-09-25 | 2008-03-31 | 현진소재주식회사 | Forging apparatus of crank shaft |
| CN201992026U (en) * | 2010-12-30 | 2011-09-28 | 江苏创一精锻有限公司 | Solid forged near-netshape forming triple gear shaft |
| CN205289612U (en) * | 2015-12-09 | 2016-06-08 | 四川众友机械有限责任公司 | Major axis type differential side gear's forging mold processing |
| CN108941409A (en) * | 2018-09-17 | 2018-12-07 | 谢兵 | A kind of automatic warm heading machine |
-
2019
- 2019-09-25 CN CN201910910235.7A patent/CN110625054B/en active Active
-
2020
- 2020-09-22 ZA ZA2020/05859A patent/ZA202005859B/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH033726A (en) * | 1989-06-01 | 1991-01-09 | Aisin Seiki Co Ltd | Method of manufacturing helical gear cold stamping die |
| JPH0679392A (en) * | 1992-08-31 | 1994-03-22 | Aichi Steel Works Ltd | Gear forging method |
| JP2001105091A (en) * | 1999-09-30 | 2001-04-17 | Musashi Seimitsu Ind Co Ltd | Forge-forming method of formed product with dog teeth |
| KR100818012B1 (en) * | 2006-09-25 | 2008-03-31 | 현진소재주식회사 | Forging apparatus of crank shaft |
| CN201992026U (en) * | 2010-12-30 | 2011-09-28 | 江苏创一精锻有限公司 | Solid forged near-netshape forming triple gear shaft |
| CN205289612U (en) * | 2015-12-09 | 2016-06-08 | 四川众友机械有限责任公司 | Major axis type differential side gear's forging mold processing |
| CN108941409A (en) * | 2018-09-17 | 2018-12-07 | 谢兵 | A kind of automatic warm heading machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117399555A (en) * | 2023-12-14 | 2024-01-16 | 山西东泰重工锻压有限公司 | Shaft forging and forging equipment and forging method thereof |
| CN117399555B (en) * | 2023-12-14 | 2024-03-19 | 山西东泰重工锻压有限公司 | Shaft forging and forging equipment and forging method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA202005859B (en) | 2021-08-25 |
| CN110625054B (en) | 2021-01-22 |
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