CN111283126B - Forming process and die for full-flow knuckle forge piece - Google Patents
Forming process and die for full-flow knuckle forge piece Download PDFInfo
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- CN111283126B CN111283126B CN202010117472.0A CN202010117472A CN111283126B CN 111283126 B CN111283126 B CN 111283126B CN 202010117472 A CN202010117472 A CN 202010117472A CN 111283126 B CN111283126 B CN 111283126B
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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
- 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
- B21J5/002—Hybrid process, e.g. forging following casting
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Abstract
The invention relates to the field of steering knuckle manufacturing, in particular to a process and a die for forming a full-flow steering knuckle forge piece. The forming process comprises a forging process, an edge cutting process, a hot forming process and a finishing process; in the forging process, blank making, pre-distributing, pre-forging and finish forging are carried out, and an integrated forged piece steering knuckle is forged in the forging process and comprises a main shaft, a long main pin arm, a short main pin arm, a flange plate, a pull rod connecting arm, a braking torque plate and a steering arm, wherein the steering arm comprises an arm part and a ball head, and the arm part is of a straight arm structure; in the hot forming and finishing processes, the arm part is deformed into a bent arm structure from a straight arm structure, and the pressure maintaining precision shaping is carried out on the whole structure of the steering knuckle. The beneficial effects are that: the knuckle forging piece with the straight arm structure is forged firstly, then the arm part is subjected to bending hot forming, and the integral structure of the knuckle is subjected to finishing, so that the knuckle of the full-flow line integrated knuckle is obtained, the quality and good mechanical property of the knuckle are guaranteed, and the forging forming difficulty is reduced.
Description
Technical Field
The invention relates to the field of steering knuckle manufacturing, in particular to a process and a die for forming a full-flow steering knuckle forge piece.
Background
The automobile steering knuckle is one of the main security parts of an automobile steering front axle assembly, effectively transmits the rotation angle value of a steering wheel to the front wheels of an automobile, controls the advancing direction of the automobile and bears changeable impact load at the front part of the automobile. Traditional knuckle generally belongs to the fork, generally includes main shaft, long king pin arm, short king pin arm and ring flange, therefore the knuckle need pass through bolted connection when being connected with pull rod linking arm, steering arm, leads to car a steering system structure complicated, and processing, the assembly degree of difficulty increase, and steering system assembly weight is heavier, is unfavorable for the lightweight development trend of car.
In order to reduce the difficulty of processing and assembling, simplify the structure of a steering system, increase the use safety of the steering knuckle and realize light weight of an automobile, the steering knuckle shown in fig. 1 and 7 can be adopted, a main shaft 84, a long king pin arm 82, a short king pin arm 83, a flange plate 81, a pull rod connecting arm 86, a braking torsion plate 87 and a steering arm 85 of the steering knuckle are of an integrated structure, the steering arm 85 of the steering knuckle is of full-line integration, but the structure is more complicated than that of a traditional steering knuckle due to the fact that the steering arm 85 extends out longer and is of an upward bent structure, an included angle alpha formed by a ball head 853 of the steering arm and the flange plate 81 is about 70 degrees, and the steering knuckle is difficult to forge and form and is difficult to pull by using the prior art. If the steering knuckle with the structure is directly forged and molded, a type A defect part and a type B defect part shown in fig. 2 are easily generated, and the type A defect part mainly has the problems of disconnection and mold division, unreasonable flow line, more process material supplement, irregular section, large ball head machining allowance, deformed ball head machining surface shape and the like; the B-type defective part mainly has the problems of stitch removal and mould division, less process material supplement, streamline deformation, irregular section, large ball head machining allowance, irregular ball head machining surface shape and the like, and the performance of the steering knuckle cannot be ensured.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a process and a die for forming a full-flow knuckle forging, which are used for solving the problems of difficulty in forming and processing a knuckle, poor forming quality and the like in the prior art.
In order to achieve the above and other related objects, the invention provides a forming process of a full flow knuckle forging, which comprises a forging process and a trimming process, and is characterized in that: also comprises the working procedures of hot forming and finishing;
in the forging process, blank making, pre-distribution, pre-forging and finish forging are carried out, and a forged piece steering knuckle is forged in the forging process, the forged piece steering knuckle in the process is of an integrated structure and comprises a main shaft, a long main pin arm, a short main pin arm, a flange plate, a pull rod connecting arm, a braking torsion plate and a steering arm, the steering arm comprises an arm part and a ball head, and the arm part forged in the process is of a straight arm structure;
in the hot forming and finishing process, the arm part of the steering arm is deformed into a bent arm structure from a straight arm structure, and the pressure maintaining precision shaping is carried out on the whole structure of the steering knuckle.
The invention has the beneficial effects that: the knuckle forging piece with the straight arm structure on the arm part is forged in the forging process, then the arm part is subjected to bending hot forming and the integral structure of the knuckle is subjected to finishing in the hot forming and finishing processes, the knuckle of the full-flow line integrated knuckle is obtained, the quality and the good mechanical property of the knuckle are guaranteed, and meanwhile the forging forming difficulty is reduced.
Optionally, the blank-making pre-distributing step of the forging process includes four sets of distributing materials, where the main shaft is a set of distributing materials, the flange plate and the braking torsion plate are a set of distributing materials, the long king pin arm and the pull rod connecting arm are a set of distributing materials, and the short king pin arm and the steering arm are a set of distributing materials.
Alternatively, the arm portion of the straight arm structure forged in the forging process is perpendicular to both the axial line of the main shaft and the axial line of the short main pin arm.
Optionally, in the thermoforming and finishing process, the arm portion is smoothly bent upwards in a direction away from the main shaft in the process of deforming the arm portion from the straight arm structure into the bent arm structure.
Optionally, the finished forged knuckle in the forging process is placed into a hot forming and finishing process with the primary axis oriented vertically upward.
The beneficial effect of adopting the above optional scheme is: the arm part of the steering arm is continuously and smoothly bent upwards to form a bent arm by a straight arm, the thermoforming structure is stable, the whole streamline inside the steering arm is reasonably distributed, and the mechanical property and the strength of the steering arm are improved.
Optionally, the parting surface of the forged piece knuckle after the hot forming and finishing process comprises a first parting surface, a second parting surface and a third parting surface, and the first parting surface is transited to the second parting surface and then transited to the third parting surface;
the first parting surface is the horizontal plane at ring flange and braking torque plate place, the second parting surface is long king pin arm axis and short king pin arm axis place and with the perpendicular horizontal plane of main shaft axis, the third parting surface is the curved surface at steering arm place, and the third parting surface passes through to the curved surface at steering arm place by one side of short king pin arm on, and the steering arm symmetry divides the mould, is convenient for divide the mould, has guaranteed the shaping quality of knuckle.
The die comprises a bottom plate and a thermal forming and finishing lower die, wherein a finishing cushion block is arranged on the bottom plate, a thermal forming and finishing upper die connected with the bottom plate is arranged between the thermal forming and finishing lower die and the finishing cushion block, a thermal forming pressure head is arranged on the bottom plate, the thermal forming pressure head sequentially penetrates through the finishing cushion block and the thermal forming and finishing upper die and then extends into the thermal forming and finishing lower die, and the thermal forming and finishing pressure head is matched with the thermal forming and finishing lower die to realize the thermal forming and finishing of a steering arm.
The invention has the beneficial effects that: the hot forming of the arm part of the steering arm from the straight arm to the bent arm is realized, and the integral structure of the steering knuckle is precisely shaped, so that the steering arm is integrated in a full flow line, the forming difficulty of the steering knuckle is reduced, and the forming quality of the steering knuckle is ensured.
Optionally, the upper thermoforming and finishing mold is connected to the bottom plate through a guide pillar, a first end of the guide pillar is connected to the bottom plate, and a second end of the guide pillar passes through the finishing cushion block, extends into the upper thermoforming and finishing mold, and slides along a guide hole in the upper thermoforming and finishing mold.
Optionally, a spring is mounted on the base plate and passes through the finishing block to provide a back pressure for the thermoforming and finishing upper die.
Optionally, the hot forming press head is of a square column structure, the upper hot forming and finishing die is provided with a square guide hole matched with the square column structure, and the bottom of the hot forming press head is provided with an upper steering arm forming cavity matched with the lower hot forming and finishing die.
The beneficial effect of adopting the above optional scheme is: simple structure, rationally distributed compactness for the thermoforming and finishing go up the mould and thermoforming and finishing lower mould can stabilize the compound die, and realize the shaping of steering arm and the finishing shape of knuckle with the cooperation of thermoforming pressure head, improved the quality of knuckle.
Drawings
FIG. 1 is a schematic view of a steering knuckle;
FIG. 2 is a schematic view of a steering arm construction for a direct arm forged steering knuckle;
FIG. 3 is a schematic view of the mold of the present invention in the open position;
FIG. 4 is a schematic view showing a state where the mold of the present invention starts hot forming;
FIG. 5 is a schematic view of the mold of the present invention in a state in which the hot forming and finishing are completed;
FIG. 6 shows a top view of the mold of the present invention;
FIG. 7 is a schematic view of the construction of the steering arm of the molded steering knuckle of the present invention;
FIG. 8 is a schematic structural view of a knuckle forged by a forging process according to the present invention, wherein the knuckle has a straight arm portion;
fig. 9 is a schematic structural diagram of the hot forming and finishing process of the forming process of the present invention when the arm portion of the knuckle is a bent arm.
Description of reference numerals
1, a bottom plate;
2, finishing the cushion block;
21 finishing the lower surface of the cushion block;
3 hot forming and finishing the upper die;
31 a guide hole;
32 positioning guide grooves;
33 thermoforming and finishing the upper surface of the upper die;
4, hot forming and finishing the lower die;
41 positioning guide projection;
5 thermoforming a ram;
51 thermoforming a ram start face;
6, an elastic piece;
7, a guide post;
8, forging;
an 81 flange plate;
82 long king pin arms;
83 short king pin arm;
84 a main shaft;
85 a steering arm;
851 steering arm straight arm start surface;
852 an arm portion;
853 a ball head;
86 pull rod connecting arms;
87 braking torsion plate
88 a parting line;
89 flow lines;
9 lock guide surface.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It should be noted that the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship between the terms and the corresponding elements may be made without substantial technical changes.
Before describing embodiments of the present invention in detail, the present invention will be described in an application environment. The technology of the invention is mainly applied to the production and processing of the forged 8 steering knuckle with the structure shown in figure 1, in particular to the processing of the forging forming process of the steering arm with the bent arm structure. The invention solves the problems of deformed steering knuckle streamline, poor filling property, difficult die separation, large machining allowance and the like produced by traditional forging.
The forming process of the full-flow knuckle forging piece comprises a forging process, an edge cutting process, a hot forming process and a finishing process, wherein the hot forming process and the finishing process are processed through a die.
As shown in fig. 1 and 3 to 8, in the forging step, a blank preliminary splitting, a preliminary forging, and a finish forging are performed, and in the forging step, a forged piece 8 knuckle is forged, and the finish forged piece knuckle in this step is of an integrated structure including a spindle 84, a long king pin arm 82, a short king pin arm 83, a flange 81, a tie rod connecting arm 86, a brake torque plate 87, and a knuckle arm 85, and the knuckle arm 85 includes an arm portion 852 and a ball portion 853, and the arm portion 852 forged in this step is of a straight arm structure. The blank-making pre-distribution step comprises four groups of distribution materials, and as the flange plate of the steering knuckle formed by the method is larger than that of the conventional steering knuckle, the main shaft 84 is a group of distribution materials; the flange plate 81 and the braking torsion plate 87 form a group of distribution materials; the long main pin arm 82 and the pull rod connecting arm 86 form a group of material distribution; the short main pin arms 83 are divided into a group of materials, so that material filling and metal streamline distribution are facilitated, and the forming quality and mechanical property of the forge piece are improved. The arm 852 of the straight arm structure forged in the forging step is perpendicular to the axial line of the main shaft 84 and the axial line of the short master pin arm 83, and the axial line of the arm 852 of the straight arm structure is flush with the axial line of the short master pin arm 83.
As shown in fig. 1, 3 to 7, and 9, in the hot forming and finishing step, the temperature of the forged piece when the forging step is completed and the hot forming and finishing step is performed is generally about 950 ℃. The forging piece knuckle finished in the forging process is placed into a cavity of a lower thermoforming and finishing die 4 in a mode that a main shaft is vertically upward, an arm part 852 of a steering arm 85 is deformed into a bent arm structure from a straight arm structure through the cooperation of a thermoforming pressure head 5 and the lower thermoforming and finishing die 4, in the thermoforming process, an elastic part 6 provides back pressure for an upper thermoforming and finishing die 3 to enable the upper thermoforming and finishing die 3 to press the forging piece knuckle tightly, and the thermoforming pressure head 5 moves downwards to apply force to the steering arm to enable the steering arm to be thermoformed. The arm 852 is displaced and locally deformed, the ball head 853 is displaced, the shape of the arm of the finish forging is compensated technically according to the change rule of a neutral layer of the steering arm and the material plastic deformation characteristic, the problem that the inner and outer metal of a steering knuckle is unevenly distributed during hot forming can be solved, the problems of ball head contour deformation, machining allowance increase and streamline deformity caused by process material supplement or parting line parting of a traditional forge piece are solved by adopting the hot forming process after forging for the steering arm, the steering arm 85 is symmetrically parted by a parting line 88, the streamline 89 of the steering arm with a bent arm structure is reasonable and regular, the section of the arm is regular, the shape of the machined surface of the ball head 853 is regular, the machining allowance of the ball head is small, and the mechanical property and the quality of the steering arm are improved.
The die parting surface of the forge piece steering knuckle after the hot forming and finishing processes comprises a first die parting surface, a second die parting surface and a third die parting surface. Wherein, the first parting surface is transited to the second parting surface and then transited to the third parting surface; the first parting surface is a horizontal plane where the flange plate 81 and the braking torsion plate 87 are located, the second parting surface is a horizontal plane where the long king pin arm axis and the short king pin arm axis are located and are perpendicular to the main shaft axis, the third parting surface is a bending surface where the steering arm is located, the third parting surface is transited to the bending surface where the steering arm is located from one side of the short king pin arm, the steering arm is symmetrically parted, and the steering arm is symmetrically parted in the hot bending forming process to enable the steering arm to have reasonable streamline and good performance. In the process of deforming arm portion 852 from a straight arm structure to a bent arm structure, arm portion 852 is bent smoothly upward (the reference in the above is defined as downward in the direction in which the main axis faces) in a direction away from main axis 84. After the steering arm is formed, the integral structure of the steering knuckle is subjected to pressure maintaining precision shaping for 3-5 s by matching the hot forming and finishing upper die 3, the hot forming pressure head 5 and the hot forming and finishing lower die 4, so that the hot forming quality and the size precision of the steering arm are ensured.
As shown in fig. 3 to 9, the mold of the present invention includes a bottom plate 1 and a lower thermoforming and finishing mold 4, wherein the bottom plate 1 is provided with a finishing pad 2, an upper thermoforming and finishing mold 3 connected to the bottom plate 1 is disposed between the lower thermoforming and finishing mold 4 and the finishing pad 2, and the upper thermoforming and finishing mold 3 is connected to the bottom plate 1 through guide posts 7. The bottom plate 1 is provided with a hot forming pressure head 5 for hot forming of the steering arm, and the hot forming pressure head 5 sequentially penetrates through the finishing cushion block 2 and the hot forming and finishing upper die 3 and then extends into the hot forming and finishing lower die 4. Install elastic component 6 on the bottom plate 1, elastic component 6 can be the nitrogen gas spring, adopts the nitrogen gas spring, stable in structure to can provide enough big elastic force, elastic component 6 passes finishing cushion 2 and provides back pressure for thermoforming and finishing mould 3, and the initial free length of elastic component is H. When the upper die 3 and the lower die 4 are hot-formed and finished, the elastic piece 6 is pressed to return into the finishing cushion block 2. The finishing cushion block 2 is provided with avoidance holes for avoiding the guide pillar 7, the elastic piece 6 and the hot forming pressure head 5, so that the guide pillar 7, the elastic piece 6 and the hot forming pressure head 5 can be conveniently installed and operated.
As shown in fig. 3 to 9, a first end of the guide post 7 is connected to the base plate 1, a second end of the guide post 7 passes through the finishing block 2 and then extends into the upper thermoforming and finishing mold 3, and the second end of the guide post 7 can slide along a guide hole 31 in the upper thermoforming and finishing mold 3. The guide hole 31 of the upper die 3 for hot forming and finishing can be a stepped hole, the upper die 3 for hot forming and finishing is limited to be separated from the guide column through the stepped surface of the stepped hole, the second end of the guide column 7 is provided with a detachable flange, during assembly, the second end of the guide column 7 extends into the guide hole 31 of the upper die 3 for hot forming and finishing after penetrating through the finishing cushion block 2 from the upper part of the bottom plate 1, the flange and the guide column are locked, and the upper die 3 for hot forming and finishing is limited to fall and is separated from the guide column 7 through the flange.
As shown in fig. 3 to 9, the hot forming press head 5 is of a square column structure, the upper die 3 is provided with a square guide hole matched with the square column structure in hot forming and finishing, and the hot forming press head 5 adopts the square column structure, so that the hot forming press head 5 is matched with the square guide hole in the operation process to play a role in guiding, is not easy to deflect, ensures the die assembly precision and also ensures the strength of the hot forming press head 5. The bottom of the hot forming press head 5 is provided with a steering arm forming upper cavity matched with the hot forming and finishing lower die, so that the steering arm 85 can be stably formed during die assembly. The four top corners of the upper part of the lower thermoforming and finishing die 4 are concavely provided with concave lock catches 41, and the upper thermoforming and finishing die 3 is provided with convex lock catches 32 matched with the concave lock catches 41. Concave hasp 41 and protruding hasp 32 all can adopt square structure, and the cooperation makes near four apex angles of mould all form hasp spigot surface 9 through concave hasp 41 and protruding hasp 32 at the compound die in-process, improves the precision of compound die. The main shaft 84 forming cavity of the forge piece steering knuckle is arranged in the hot forming and finishing upper die 3.
The working process that the forged piece steering knuckle processed in the forging procedure is put into a die for hot forming and finishing procedures is as follows: firstly, a forging 8 is horizontally placed in a hot forming and finishing lower die 4, a main shaft 81 faces upwards, a bottom plate 1 is driven by an external press to fall, so that a hot forming and finishing upper die 3 is contacted with the forging 8, a positioning guide protrusion and a positioning guide groove are contacted and matched to form a lock catch guide surface, a guide pillar 7, an elastic piece 6 and a hot forming pressure head 5 continue to move downwards, the elastic piece 6 is contacted with the upper surface 33 of the hot forming and finishing upper die and then continuously pressed until the elastic piece 6 is compressed to H1, the hot forming pressure head pre-starting surface 51 is contacted with a steering arm straight arm pre-starting surface 851, and other parts of a final forging of a forging steering knuckle except a steering arm straight arm are pressed by the hot forming and finishing upper die 3 under the pre-pressure of the elastic piece 6, so that a large enough reverse balance force is provided for the straight arm hot forming of the steering arm 85. Then, the bottom plate and the finishing cushion block continuously fall, the thermal forming pressure head 5 moves along the direction guide hole, and the guide surface of the thermal forming pressure head can balance the horizontal component force during thermal forming, so that the strength and the guide precision of the thermal forming pressure head 5 are ensured; the straight arm of the steering arm 85 starts thermal deformation under the pressure of the hot forming press head 5, the upper surface 851 of the straight arm of the steering arm gradually coincides with the molded surface of the upper molding cavity of the steering arm of the hot forming press head 5 from right to left, and the lower surface of the straight arm of the steering arm gradually coincides with the molded surface of the lower molding cavity of the lower hot forming and finishing mold 4 from left to right. Finally, when the elastic piece 6 is compressed to H2, the upper and lower surfaces of the steering arm 85 are completely overlapped with the molded surfaces of the hot forming press head 5 and the hot forming and finishing lower die 4, the hot forming is in place, meanwhile, the lower surface 21 of the finishing cushion block is overlapped with the upper surface 33 of the hot forming and finishing upper die, larger pressing force is directly transmitted to the hot forming and finishing upper die 3 and the hot forming press head 5, and the pressure is maintained for a certain time to carry out integral precision shaping on the forge piece 8.
The invention provides a forming process and a die for a full-flow knuckle forging piece. The method comprises the steps of reasonably distributing materials in a forging process to forge to form the steering arm, trimming, and then carrying out thermoforming on the steering arm through a thermoforming finishing die and integrally shaping a forged piece to obtain the full-flow-line integrated steering arm steering knuckle forged piece. The process ensures the full-flow line integrated structure of the forge piece, so that the knuckle forge piece has good mechanical property and strength, and the forging difficulty is reduced.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. The utility model provides a full flow line knuckle forging piece forming process, includes forging process, side cut process, its characterized in that: also comprises the working procedures of hot forming and finishing;
in the forging process, blank making, pre-distributing, pre-forging and finish forging are carried out, a forged piece steering knuckle is forged in the forging process, the forged piece steering knuckle in the process is of an integrated structure and comprises a main shaft, a long main pin arm, a short main pin arm, a flange plate, a pull rod connecting arm, a braking torque plate and a steering arm, the steering arm comprises an arm part and a ball head, the arm part forged in the process is of a straight arm structure, and the arm part is perpendicular to the axial lead of the main shaft and the axial lead of the short main pin arm;
in the hot forming and finishing process, the arm part of the steering arm is deformed into a bent arm structure from a straight arm structure, and the pressure maintaining precision shaping is carried out on the whole structure of the steering knuckle, wherein the upper surface of the straight arm of the steering arm is gradually superposed with the molded surface of the upper steering arm forming cavity of the hot forming press head from right to left, and the lower surface of the straight arm of the steering arm is gradually superposed with the molded surface of the lower steering arm forming cavity of the lower hot forming and finishing die from left to right, so that the arm part is displaced and locally deformed, and the ball head is only displaced;
the die parting surface of the forge piece steering knuckle after the hot forming and finishing process comprises a first die parting surface, a second die parting surface and a third die parting surface, wherein the first die parting surface is transited to the second die parting surface and then transited to the third die parting surface;
the first parting surface is a horizontal plane where a flange plate and a braking torsion plate are located, the second parting surface is a horizontal plane where a long main pin arm axis and a short main pin arm axis are located and perpendicular to the main shaft axis, the third parting surface is a bending surface where a steering arm is located, the third parting surface is transited to the bending surface where the steering arm is located from one side of the short main pin arm, and the steering arm is symmetrically parted.
2. The process for forming the full-flow knuckle forging according to claim 1, wherein the process comprises the following steps: the blank-making pre-distributing step in the forging process comprises four groups of distribution materials, wherein the main shaft is divided into one group, the flange plate and the braking torque plate are divided into one group, the long main pin arm and the pull rod connecting arm are divided into one group, and the short main pin arm and the steering arm are divided into one group.
3. The process for forming the full-flow knuckle forging according to claim 1, wherein the process comprises the following steps: in the thermoforming and finishing process, in the process of deforming the arm portion from the straight arm structure into the bent arm structure, the arm portion is smoothly bent upward in a direction away from the main shaft.
4. The process for forming the full-flow knuckle forging according to claim 1, wherein the process comprises the following steps: and (4) putting the forged piece steering knuckle finished in the forging process into a hot forming and finishing process in a direction that the main shaft is vertically upward.
5. A mold for the processing of the hot forming and finishing process according to any of claims 1 to 4, characterized in that: the thermal forming and finishing device comprises a bottom plate and a thermal forming and finishing lower die, wherein a finishing cushion block is arranged on the bottom plate, a thermal forming and finishing upper die connected with the bottom plate is arranged between the thermal forming and finishing lower die and the finishing cushion block, a thermal forming pressure head is arranged on the bottom plate, the thermal forming pressure head sequentially penetrates through the finishing cushion block and the thermal forming and finishing upper die and then extends into the thermal forming and finishing lower die, and the thermal forming and finishing lower die is matched with the thermal forming and finishing lower die to realize the thermal forming and finishing of the steering arm.
6. The mold of claim 5, wherein: the hot forming and finishing upper die is connected with the bottom plate through a guide pillar, the first end of the guide pillar is connected with the bottom plate, and the second end of the guide pillar penetrates through the finishing cushion block, then extends into the hot forming and finishing upper die and slides along a guide hole in the hot forming and finishing upper die.
7. The mold of claim 5, wherein: and the bottom plate is provided with an elastic piece, and the elastic piece penetrates through the finishing cushion block to provide back pressure for the hot forming and finishing upper die.
8. The mold of claim 5, wherein: the hot forming pressure head is of a square column structure, the hot forming and finishing upper die is provided with a square guide hole matched with the square column structure, and the bottom of the hot forming pressure head is provided with a steering arm forming upper die cavity matched with the hot forming and finishing lower die.
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| CN202010117472.0A CN111283126B (en) | 2020-02-25 | 2020-02-25 | Forming process and die for full-flow knuckle forge piece |
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| CN202010117472.0A CN111283126B (en) | 2020-02-25 | 2020-02-25 | Forming process and die for full-flow knuckle forge piece |
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| CN111283126B true CN111283126B (en) | 2022-02-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09108768A (en) * | 1995-10-18 | 1997-04-28 | Toyota Motor Corp | Forging method |
| JPH11179476A (en) * | 1997-12-24 | 1999-07-06 | Toyota Motor Corp | Forging method for roughly formed material having bent body part |
| CN107628107A (en) * | 2017-09-27 | 2018-01-26 | 湖北三环锻造有限公司 | With the spindle and its processing technology of steering arm integral forming |
| CN107813872A (en) * | 2017-09-27 | 2018-03-20 | 湖北三环锻造有限公司 | With the automotive disc knuckle and its processing technology of steering arm integral forming |
| CN109093041A (en) * | 2018-07-26 | 2018-12-28 | 庆铃汽车（集团）有限公司 | Knuckle composite die and technique |
-
2020
- 2020-02-25 CN CN202010117472.0A patent/CN111283126B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09108768A (en) * | 1995-10-18 | 1997-04-28 | Toyota Motor Corp | Forging method |
| JPH11179476A (en) * | 1997-12-24 | 1999-07-06 | Toyota Motor Corp | Forging method for roughly formed material having bent body part |
| CN107628107A (en) * | 2017-09-27 | 2018-01-26 | 湖北三环锻造有限公司 | With the spindle and its processing technology of steering arm integral forming |
| CN107813872A (en) * | 2017-09-27 | 2018-03-20 | 湖北三环锻造有限公司 | With the automotive disc knuckle and its processing technology of steering arm integral forming |
| CN109093041A (en) * | 2018-07-26 | 2018-12-28 | 庆铃汽车（集团）有限公司 | Knuckle composite die and technique |
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| CN111283126A (en) | 2020-06-16 |
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