CN103128209A - Half die forging method and half die forging device of crank throw for large ship - Google Patents
Half die forging method and half die forging device of crank throw for large ship Download PDFInfo
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- CN103128209A CN103128209A CN2011103857126A CN201110385712A CN103128209A CN 103128209 A CN103128209 A CN 103128209A CN 2011103857126 A CN2011103857126 A CN 2011103857126A CN 201110385712 A CN201110385712 A CN 201110385712A CN 103128209 A CN103128209 A CN 103128209A
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- crank
- base
- forging
- blank
- cotter pin
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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
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/08—Making machine elements axles or shafts crankshafts
Abstract
The invention discloses a half die forging method and a half die forging device of a crank throw for a large ship. The half die forging method includes the flowing steps: removing the head portion and the tail portion of a steel ingot, forging and pressing the steel ingot to a flat billet with a boss in the middle of the flat billet, conducting lateral press at the same time to the boss of a pre-formed blank by using two symmetrical side press clamp round models, clamping a round part of a pin part, embedding and pressing the blank after the blank is laterally pressed by using a bend forging upper die and a crank throw pin part forming die, bending forging, and conducting secondary bending forging and repair by using an upper flat anvil and a lower flat anvil. The side press clamp round models is are used for replacing an existing V-shaped die, and the crank throw pin part forming die is added, the shape of a crank throw pin part after half die forging is close to a circle, slopes of two sides are formed at the same time, and subsequent processing time is reduced, optimal design of boundary dimension of the blank and parameters of the die are conducted by using a computer analog technology, test times and capital investment are reduced, working allowance of forging pieces after optimization is reduced obviously, production raw material and costs are saved and production efficiency is improved.
Description
Technical field
The invention belongs to the forging field, specifically belong to a kind of argosy with semi-stamping method and the device of crank throw, this device and technique are obtained by computer modeling technique, are applicable to argosy with the manufacturing of crank throw forging.
Background technology
Crank throw (also claim to crank arm, bent axle or crank) is the vitals of big-and-middle-sized boat diesel engine, is mainly used in big-and-middle-sized boats and ships (more than ten thousand tons) diesel engine and generating with the bent axle in the low speed two stroke diesel engine.Can be divided into by production method and forging and casting, can be divided into monoblock type and combined type (combination, half combination) by structure, wherein the restriction of ability is smelted and forged to the monoblock type crank throw, be confined to small crank, and Large Crankshaft must adopt combination production, and the difficult point that the combined type crank throw forges is the forging of crank throw.
The main method of making in the world at present the crank throw forging is curved forging method, processing technology is to flatten base---with V-type anvil side pressure blank two sides---flexural deformation---recontour, the great advantage of this technique is easy moulding, metallic fiber flows to, required rating of set less is so most countries all adopts the method to produce crank throw in the world.
But due to the restriction of mould, the remaining piece in crank-pin position is larger, has not only increased raw-material smelting cost, has also expended a large amount of unnecessary machining periods, has elongated the production cycle, is unfavorable for the mass production of bent axle.The pressure V-type method of cranking arm traditional is mainly to form for fear of the local material accumulation to fold, and does not have the effect that obviously reduces the surplus finish forge.
Summary of the invention
The technical problem to be solved in the present invention is to provide semi-stamping method and the device that a kind of argosy is used crank throw, improve raw-material utilization rate, reduce the forging surplus, shorten unnecessary machining period, guarantee that the blank deformation in curved forging is even, improve forging type quality and qualification rate.
For solving the problems of the technologies described above, the argosy of the present invention semi-stamping device of crank throw, comprise curved forging patrix, curved forging counterdie, upper flat anvil, lower flat anvil, plate, and the side pressure card of two symmetries of blocking blank side circle mould and a crank cotter pin section shaping mould, described side pressure card circle mould has an arc-shaped concave, the angle of described arc-shaped concave is less than or equal to 180 °, has a cavity in described crank cotter pin section shaping mould, and described cavity is divided into two symmetrical die cavities by an arc platform.
Further, described side pressure card circle mould comprises backform and the snap gauge of integrative-structure, and the length of described backform and snap gauge is identical, and snap gauge is positioned at the centre position of backform, described arc-shaped concave is positioned at the centre of snap gauge, and backform comprises one section inclined plane from top to bottom near the one side of arc-shaped concave.
Further, the die cavity side of described crank cotter pin section shaping mould is arcuate structure.
Further, the working face that described curved forging patrix, plate contact with blank is arcuate structure, and the inside cavity of curved forging counterdie is wedge structure.
The present invention also provides a kind of semi-stamping method of utilizing argosy to use crank throw semi-stamping device, comprises the following steps:
The 1st step, steel ingot is removed head and afterbody, forge into the slab of Intermediate Gray boss;
The 2nd goes on foot, and utilizes the boss of the side pressure card circle mould side pressure simultaneously preformed blank of two symmetries, and blocking goes out circle and the both sides chamfered portion of pin section;
In the 3rd step, the blank after utilizing curved forging patrix and crank cotter pin section shaping mould to side pressure carries out embedding and presses;
The 4th step, curved forging;
In the 5th step, in utilization, flat anvil and lower flat anvil carry out the curved forging of secondary and finishing.
Wherein, in the 2nd step, the side pressure card circle mould that is positioned at preformed blank top is fixed on flat anvil, and the side pressure card circle mould that is positioned at preformed blank below is fixed on lower flat anvil.
In the 3rd step, first crank cotter pin section shaping mould is placed on lower flat anvil, then the projection section of the blank after side pressure is put into crank cotter pin section shaping mould, use the downward pressed compact material of flat anvil, blank is embedded in crank cotter pin section shaping mould; Again curved forging patrix is arranged on press top, makes the descending and contact blank of curved forging patrix, motionless to the preformed body central stationary, by steel wire rope or iron chains, blank, crank cotter pin section's shaping mould and curved forging patrix are connected as a single entity at last.
In the 4th step, start press, first blank, crank cotter pin section's shaping mould and the curved forging patrix that links together is placed on curved forging counterdie, blank is shelved on curved forging counterdie, crank cotter pin section shaping mould is arranged in the inside cavity of curved forging counterdie, and the center to preformed body and mould, press is at the uniform velocity depressed with the speed of 100～150mm/s, until crank cotter pin section shaping mould contacts and keeps motionless with the inside cavity of curved forging counterdie, at last blank, crank cotter pin section shaping mould is separated with curved forging patrix, blank melts down to be waited to expect.
Further, preformed blank in the 1st step obtains by computer simulation according to the processing drawing of crank throw part, side pressure card circle mould in the 2nd step obtains by computer simulation, the backform and the snap gauge that comprise integrative-structure, the length of described backform and snap gauge is identical, and snap gauge is positioned at the centre position of backform, described snap gauge has an arc-shaped concave, the angle of described arc-shaped concave is less than or equal to 180 °, described arc-shaped concave is positioned at the centre of snap gauge, and backform comprises one section plane and the inclined plane from top to bottom that is connected with the plane near the one side of arc-shaped concave.
Beneficial effect of the present invention is:
1, utilize side pressure card circle mould to replace existing V-type mould, and increase crank cotter pin section shaping mould, make crank cotter pin section shape after semi-stamping close to a circle, and the inclined-plane of both sides forms out simultaneously, greatly shortened the following process time;
2, adopt computer modeling technique to be optimized design to the parameter of blank shape size and mould according to different parts, both saved test number (TN), reduced again fund input, also saved valuable search time, and the forging process surplus after optimizing obviously reduces, and has saved raw materials for production, has reduced production cost, shorten machining period, improved production efficiency;
3, the preformed blank of the present invention's design and geomery and the processing technology of each mould are applicable to produce MAN B﹠amp; The crank throw forging peculiar to vessel such as S50MC, the MC-C-S90MC of W (Man Enbiwei), MC-C, can also be for the production of whole type crankshaft cranks of WNSD (Wa Xilan) company, during the crank throw part of production different model, only need to change according to the processing drawing of part the size of blank and mould, greatly reduce design time, shortened the production cycle.
Description of drawings
The present invention is further detailed explanation below in conjunction with accompanying drawing and the specific embodiment:
Fig. 1 a is the front view of crank throw roughing part;
Fig. 1 b is the side view of crank throw roughing part;
Fig. 2 a is the front view of crank throw preformed blank;
Fig. 2 b is the side view of crank throw preformed blank;
Fig. 3 a is the front view of side pressure card circle mould;
Fig. 3 b is the side view of side pressure card circle mould;
Fig. 4 a is the front view of curved forging patrix;
Fig. 4 b is the side view of curved forging patrix;
Fig. 5 a is the front view of curved forging counterdie;
Fig. 5 b is the side view of curved forging counterdie;
Fig. 6 a is the front view of crank cotter pin section shaping mould;
Fig. 6 b is the top view of crank cotter pin section shaping mould;
Fig. 6 c is the left view of crank cotter pin section shaping mould;
Fig. 7 a carries out the side view of side pressure card circle to the preformed blank;
Fig. 7 b carries out the front view of side pressure card circle to the preformed blank;
Fig. 8 carries out to the blank after side pressure card circle the schematic diagram that embedding is pressed;
Fig. 9 carries out the schematic diagram of curved forging to blank;
Figure 10 carries out the schematic diagram of the curved forging of secondary to the blank after curved forging;
Figure 11 is the schematic diagram after the curved forging of secondary;
Figure 12 a is the allowance schematic diagram of conventional method;
Figure 12 b is allowance schematic diagram of the present invention.
Wherein description of reference numerals is as follows:
1 is blank; 2 are side pressure card circle mould; 3 is upper flat anvil; 4 are the blank after side pressure; 5 is lower flat anvil; 6 is crank cotter pin section shaping mould; 7 is curved forging counterdie; 8 is iron chains; 9 is curved forging patrix; 10 is plate; 11 is cushion block.
The specific embodiment
Argosy provided by the invention comprises curved forging patrix 9, curved forging counterdie 7, upper flat anvil 3, lower flat anvil 5, plate 10 with the semi-stamping device of crank throw, the side pressure card circle mould 2 of two symmetries of blocking blank side, a crank cotter pin section shaping mould 6.
As shown in Fig. 3 a, Fig. 3 b, side pressure card circle mould 2 comprises backform and the snap gauge of integrative-structure, the length of described backform and snap gauge is identical, and snap gauge is positioned at the centre position of backform, side pressure card circle mould 2 has an arc-shaped concave, described arc-shaped concave is positioned at the centre of snap gauge, and its angle is less than or equal to 180 °, and backform comprises one section inclined plane from top to bottom near the one side of arc-shaped concave.
As shown in Fig. 6 a to 6c, have a cavity in crank cotter pin section shaping mould 6, described cavity is divided into two symmetrical die cavities by an arc platform.The die cavity side of crank cotter pin section shaping mould 6 is arcuate structure.
The working face that described curved forging patrix 9, plate 10 contact with blank 1 is arcuate structure, and the inside cavity of curved forging counterdie 7 is wedge structure.
Utilize above-mentioned semi-stamping device to make the semi-stamping method that argosy is used crank throw, comprise the following steps:
The 1st step, steel ingot is removed head and afterbody, forge into the slab of Intermediate Gray boss, as shown in Fig. 2 a, Fig. 2 b;
The 2nd goes on foot, and utilizes the boss of side pressure card circle mould 2 preformed of the side pressure simultaneously blanks 1 of two symmetries, and blocking goes out circle and the both sides chamfered portion of pin section, as shown in Fig. 7 a, 7b; The side pressure card circle mould 2 that is positioned at preformed blank top is fixed on flat anvil 3, and the side pressure card circle mould 2 that is positioned at preformed blank below is fixed on lower flat anvil 5;
In the 3rd step, utilize blank 4 after curved forging patrix 9 and 6 pairs of side pressures of crank cotter pin section's shaping mould to carry out embedding and press; Wherein, first crank cotter pin section shaping mould 6 is placed on lower flat anvil 5, then the projection section of the blank 4 after side pressure is put into crank cotter pin section shaping mould 6, use the downward pressed compact material 4 of flat anvil 5, blank 4 is embedded in crank cotter pin section shaping mould 6, as shown in Figure 8; Again curved forging patrix 9 is arranged on press top, makes the descending and contact blank 4 of curved forging patrix 9, motionless to the preformed body central stationary, by steel wire rope or iron chains 8, blank 4, crank cotter pin section's shaping mould 6 and curved forging patrix 9 are connected as a single entity at last;
The 4th step, carry out curved forging, as shown in Figure 9, first blank 4, crank cotter pin section's shaping mould 6 and the curved forging patrix 9 that links together is placed on curved forging counterdie 7, blank 4 is shelved on curved forging counterdie 7, crank cotter pin section shaping mould 6 is arranged in the inside cavity of curved forging counterdie 7, and the center to preformed body and mould, press is at the uniform velocity depressed with the speed of 100～150mm/s, until crank cotter pin section shaping mould 6 contacts and keeps motionless with the inside cavity of curved forging counterdie 7, at last blank 4, crank cotter pin section shaping mould 6 is separated with curved forging patrix 9, blank melts down to be waited to expect;
In the 5th step, in utilization, flat anvil 3, plate 10 and lower flat anvil 5 carry out the curved forging of secondary and finishing, as Figure 10, shown in Figure 11.
In the 1st step, the preformed blank obtains by computer simulation according to the processing drawing of crank throw part, and each spot size unit of this preformed blank is mm, and design formula is:
W1 base=W1+ (100～150)
W2 base=W2+ (100～150)
β base=β
α base=α
H is thick=(H1-H2)/2+ (50～90)
H1 base=H1+ (80～130)
L2 base ≈ L2+ (100～150
L3 base ≈ L3
L4 base=L1-L2+ (30～50)
L5 base=H2+2L4
Base+ (40～60)
L6 base=400～550
L7 base=100～150
As shown in Fig. 1 a, 1b, the processing dimension code name implication of crank throw part is as follows:
W1 represents the width of crank throw, W2 represents the width of crank throw end, the α angle between up/down surface and the end inclined-plane of cranking arm that represents to crank arm, the β angle between outer surface and the end inclined-plane of cranking arm that represents to crank arm, H1 represents the height of crank cotter pin end, and H2 represents the distance between two arm outer surfaces, and L1 represents the total length of crank throw, L2 represents pin section along the length of forging length direction, L3 represent the to crank arm height on end inclined-plane.
As shown in Fig. 2 a, 2b, the preformed blank dimension code name implication of crank throw is as follows:
the W1 base represents the overall width of preformed blank or forging, the α base represents the angle between preformed blank boss one skew back face and vertical plane, the W2 base represents the width of crank throw forging end, the β base represents the angle between outer surface and the end inclined-plane of cranking arm of cranking arm of forging, the thickness of cranking arm of the thick expression preformed of H blank, the H1 base represents the width of preformed blank boss upper limb, the L2 base represents the gross thickness of preformed blank, the L3 base represents the boss height of preformed blank, the L4 base represents the length sum of forging stock slope and uiform section arm, the L5 base represents the total length of preformed blank, the L6 base represents forging stock slope length, the L7 base represents that preformed blank boss is connected the height of taper pin with cranking arm.
Side pressure card circle mould 2 in the 2nd step obtains by computer simulation, and each spot size unit is mm, and design formula is:
M1＝H3-(30～40)
M2＝W3+(50～75)
M11＝(0.47～0.50)×W1
Angle A=180 °-β
R2=(Φ
Zero+ (100～150))/2
As shown in Fig. 3 a, 3b, H3 represents the internal arm size of crank throw part, and W3 represents the circular arc center of circle to the vertical range of working face, and W1 represents the width of crank throw part, the β angle between outer surface and the end inclined-plane of cranking arm that represents to crank arm, Φ
ZeroThe diameter of expression crank cotter pin cylinder, M1 represents the width of snap gauge in side pressure card circle mould, M2 represents that the side pressure card circle mould orthodrome center of circle is to the vertical range of inclined working, M11 represents the maximum height of card sword, A represents the inclined plane of backform in side pressure card circle mould and the angle between horizontal plane, R2 represents the radius of the arc-shaped concave of snap gauge in side pressure card circle mould, and other radius of corner is got 10mm.Arc-shaped concave can be semicircle, can be also one section minor arc, depends on whether a pair of side pressure card circle mold pressing lower time need closure, and the size of holding the clout space of reserving.
Curved forging patrix 9, curved forging counterdie 7 in the 3rd step and crank cotter pin section shaping mould 6 obtain by computer simulation, and each spot size unit is mm,
The design formula of curved forging patrix is:
M3＝M1
M4＝(1～2)×M3＝(1～2)×M1
Angle of inclination B=20～30 °
Angle r=120 °～130 °
R1＝R2
The design formula of curved forging patrix is:
M13＝H2+(100～120)
M14 〉=W1 base+150
M15 〉=2 * L3 base * tan α base+H1 base+2 * L6 base+100
M16 ≈ (M15-(2 * H thick/cos30 °)) * cos30 °+the L2 base+(M17-M12)
Angle E=arctan (0.5 * M15/M16-0.5 * M13/M16)
M18＝400～500
R5＝350～500
R6＝200～250
The design formula of crank cotter pin section shaping mould is:
M5＝M1
M6＝20～30
The M7=W2 base
The M8=H1 base
M12＝0.5×(W1-W2)/tanβ
F＝E
M9＝M13-(10～20)
M10=(W1 base+W2 base)/2+ (120～200)
M17＝M12+(100～150)
R3=Φ
Zero/ 2+ (100～150)
R4＝R6
Angle G=β
Angle D=α
C＝r-90°
as shown in Fig. 4 a to 6c, M1 represents the width of snap gauge in side pressure card circle mould, M3 represents the thickness of curved forging patrix both wings, M4 represents the deep-slotted chip breaker inboard of curved forging patrix and the difference in height in the outside, R1 represents the radius of curved forging patrix work circular arc, B represents the angle on curved forging patrix both wings and transition inclined-plane, r represents the obtuse angle angle of circular arc tangential line and horizontal sides, M5 represents the thickness of arc platform in crank cotter pin section shaping mould, M6 represents the difference in height of arc platform minimum point and die cavity bottom surface in crank cotter pin section shaping mould, M7 represents the cavity width cut apart by the arc platform in crank cotter pin section shaping mould, M8 represents the cavity length cut apart by the arc platform in crank cotter pin section shaping mould, M9 represents the total length of crank cotter pin section's shaping mould bottom surface, M10 represents the overall width of crank cotter pin section's shaping mould bottom surface, M12 represents the depth capacity of the cavity cut apart by the arc platform in crank cotter pin section shaping mould, M17 represents the total height of crank cotter pin section shaping mould, F represents the gradient of a pair of external surface of crank cotter pin section's shaping mould, R3 represents the radius of arc platform in crank cotter pin section shaping mould, R4 represents the bottom surface seamed edge fillet of crank cotter pin section shaping mould, G represents the inclination angle of the work die face that the forging hypotenuse corresponding with angle β base fitted, D represents the inclination angle of the working face that the forging hypotenuse corresponding with angle α base fitted, M13 represents the width of the front die cavity internal orifice of curved forging counterdie rounding, M14 represents the width of curved forging counterdie base, M15 represents the width of the front die cavity collar extension of curved forging counterdie rounding, M16 represents the degree of depth of curved forging counterdie, E represents the angle of inclination of the die cavity inner surface of curved forging counterdie, M18 represents the total length of curved forging counterdie base, R5 represents the radius of the die cavity outer rim fillet of curved forging counterdie, R6 represents the radius of the die cavity inner edge fillet of curved forging counterdie.
The present invention utilizes side pressure card circle mould to replace existing V-type mould, and increase crank cotter pin section shaping mould, make crank cotter pin section shape after semi-stamping close to a circle, and the inclined-plane of both sides forms out simultaneously, as shown in Figure 12 a, Figure 12 b, allowance of the present invention obviously reduces, and has greatly shortened the following process time.
The present invention adopts computer modeling technique to be optimized design to the parameter of blank shape size and mould according to different parts, both saved test number (TN), reduced again fund input, also saved valuable search time, and the forging process surplus after optimizing obviously reduces, and has saved raw materials for production, has reduced production cost, shorten machining period, improved production efficiency.
The preformed blank of the present invention's design and geomery and the processing technology of each mould are applicable to produce MAN B﹠amp; The crank throw forging peculiar to vessel such as S50MC, the MC-C-S90MC of W (Man Enbiwei), MC-C, can also be for the production of whole type crankshaft cranks of WNSD (Wa Xilan) company, during the crank throw part of production different model, only need to change according to the processing drawing of part the size of blank and mould, greatly reduce design time, shortened the production cycle.
Abovely by specific embodiment, the present invention is had been described in detail, but these are not to be construed as limiting the invention.In the situation that do not break away from the principle of the invention, and the equivalent replacement that those skilled in the art does and improvement, these also should be considered as protection scope of the present invention.
Claims (10)
1. an argosy is with the semi-stamping device of crank throw, comprise curved forging patrix, curved forging counterdie, upper flat anvil, lower flat anvil, plate, it is characterized in that: also comprise the side pressure card circle mould of two symmetries of blocking blank side, a crank cotter pin section shaping mould, described side pressure card circle mould has an arc-shaped concave, the angle of described arc-shaped concave is less than or equal to 180 °, have a cavity in described crank cotter pin section shaping mould, described cavity is divided into two symmetrical die cavities by an arc platform.
2. argosy according to claim 1 is with the semi-stamping device of crank throw, it is characterized in that: described side pressure card circle mould comprises backform and the snap gauge of integrative-structure, the length of described backform and snap gauge is identical, and snap gauge is positioned at the centre position of backform, described arc-shaped concave is positioned at the centre of snap gauge, and backform comprises one section inclined plane from top to bottom near the one side of arc-shaped concave.
3. argosy according to claim 1 with the semi-stamping device of crank throw, is characterized in that: the die cavity side of described crank cotter pin section shaping mould is arcuate structure.
4. argosy according to claim 1 is with the semi-stamping device of crank throw, and it is characterized in that: the working face that described curved forging patrix, plate contact with blank is arcuate structure, and the inside cavity of curved forging counterdie is wedge structure.
5. one kind is utilized the described argosy of claim 1 with the semi-stamping method of the semi-stamping device of crank throw, it is characterized in that, comprises the following steps:
The 1st step, steel ingot is removed head and afterbody, forge into the slab of Intermediate Gray boss;
The 2nd goes on foot, and utilizes the boss of the side pressure card circle mould side pressure simultaneously preformed blank of two symmetries, and blocking goes out circle and the both sides chamfered portion of pin section;
In the 3rd step, the blank after utilizing curved forging patrix and crank cotter pin section shaping mould to side pressure carries out embedding and presses;
The 4th step, curved forging;
In the 5th step, in utilization, flat anvil and lower flat anvil carry out the curved forging of secondary and finishing.
6. argosy according to claim 5 is with the semi-stamping method of crank throw, it is characterized in that, in described the 2nd step, the side pressure card circle mould that is positioned at preformed blank top is fixed on flat anvil, and the side pressure card circle mould that is positioned at preformed blank below is fixed on lower flat anvil.
7. argosy according to claim 5 is with the semi-stamping method of crank throw, it is characterized in that, in described the 3rd step, first crank cotter pin section shaping mould is placed on lower flat anvil, then the projection section of the blank after side pressure is put into crank cotter pin section shaping mould, use the downward pressed compact material of flat anvil, blank is embedded in crank cotter pin section shaping mould; Again curved forging patrix is arranged on press top, makes the descending and contact blank of curved forging patrix, motionless to the preformed body central stationary, by steel wire rope or iron chains, blank, crank cotter pin section's shaping mould and curved forging patrix are connected as a single entity at last.
8. argosy according to claim 7 is with the semi-stamping method of crank throw, it is characterized in that, in described the 4th step, start press, first with the blank that links together, crank cotter pin section shaping mould and curved forging patrix are placed on curved forging counterdie, blank is shelved on curved forging counterdie, crank cotter pin section shaping mould is arranged in the inside cavity of curved forging counterdie, and the center to preformed body and mould, press is at the uniform velocity depressed with the speed of 100～150mm/s, until crank cotter pin section shaping mould contacts and keeps motionless with the inside cavity of curved forging counterdie, at last with blank, crank cotter pin section shaping mould separates with curved forging patrix, blank melts down to be waited to expect.
9. argosy according to claim 5 is with the semi-stamping method of crank throw, it is characterized in that, preformed blank in described the 1st step obtains by computer simulation according to the processing drawing of crank throw part, and each spot size unit of this preformed blank is mm, and design formula is:
W1 base=W1+ (100～150)
W2 base=W2+ (100～150)
α base=α
β base=β
H is thick=(H1-H2)/2+ (50～90)
H1 base=H1+ (80～130)
L2 base ≈ L2+ (100～150
L3 base ≈ L3
L4 base=L1-L2+ (30～50)
L5 base=H2+2L4 base+(40～60)
L6 base=400～550
L7 base=100～150
Wherein, the processing dimension code name implication of crank throw part is as follows:
W1 represents the width of crank throw, W2 represents the width of crank throw end, the α angle between up/down surface and the end inclined-plane of cranking arm that represents to crank arm, the β angle between outer surface and the end inclined-plane of cranking arm that represents to crank arm, H1 represents the height of crank cotter pin end, and H2 represents the distance between two arm outer surfaces, and L1 represents the total length of crank throw, L2 represents pin section along the length of forging length direction, L3 represent the to crank arm height on end inclined-plane;
The preformed blank dimension code name implication of crank throw is as follows:
the W1 base represents the overall width of preformed blank or forging, the α base represents the angle between preformed blank boss one skew back face and vertical plane, the W2 base represents the width of crank throw forging end, the β base represents the angle between outer surface and the end inclined-plane of cranking arm of cranking arm of forging, the thickness of cranking arm of the thick expression preformed of H blank, the H1 base represents the width of preformed blank boss upper limb, the L2 base represents the gross thickness of preformed blank, the L3 base represents the boss height of preformed blank, the L4 base represents the length sum of forging stock slope and uiform section arm, the L5 base represents the total length of preformed blank, the L6 base represents forging stock slope length, the L7 base represents that preformed blank boss is connected the height of taper pin with cranking arm.
10. argosy according to claim 9 with the semi-stamping method of crank throw, is characterized in that,
Side pressure card circle mould in described the 2nd step obtains by computer simulation, the backform and the snap gauge that comprise integrative-structure, the length of described backform and snap gauge is identical, and snap gauge is positioned at the centre position of backform, described snap gauge has an arc-shaped concave, the angle of described arc-shaped concave is less than or equal to 180 °, described arc-shaped concave is positioned at the centre of snap gauge, backform comprises one section plane and the inclined plane from top to bottom that is connected with the plane near the one side of arc-shaped concave, each spot size unit of described side pressure card circle mould is mm, and design formula is:
M1＝H3-(30～40)
M2＝W3+(50～75)
M11＝(0.47～0.50)×W1
A＝180°-β
R2=(Φ
Zero+ (100～150))/2
Wherein, H3 represents the internal arm size of crank throw part, and W3 represents the circular arc center of circle to the vertical range of working face, and W1 represents the width of crank throw part, the β angle between outer surface and the end inclined-plane of cranking arm that represents to crank arm, Φ
ZeroThe diameter of expression crank cotter pin cylinder, M1 represents the width of snap gauge in side pressure card circle mould, M2 represents that the side pressure card circle mould orthodrome center of circle is to the vertical range of inclined working, M11 represents the maximum height of card sword, A represents the inclined plane of backform in side pressure card circle mould and the angle between horizontal plane, R2 represents the radius of the arc-shaped concave of snap gauge in side pressure card circle mould, and other radius of corner is got 10mm;
Curved forging patrix, curved forging counterdie in described the 3rd step and crank cotter pin section shaping mould obtain by computer simulation, described curved forging patrix and blank contact site are arcuate structure, has a cavity in described crank cotter pin section shaping mould, described cavity is divided into two symmetrical die cavities by an arc platform, each spot size unit of described curved forging patrix, curved forging counterdie and crank cotter pin section shaping mould is mm
The design formula of curved forging patrix is:
M3＝M1
M4＝(1～2)×M3＝(1～2)×M1
Angle of inclination B=20～30 °
Angle r=120 °～130 °
R1＝R2
The design formula of curved forging patrix is:
M13＝H2+(100～120)
M14 〉=W1 base+150
M15 〉=2 * L3 base * tan α base+H1 base+2 * L6 base+100
M16 ≈ (M15-(2 * H thick/cos30 °)) * cos30 °+the L2 base+(M17-M12)
M17＝M12+(100～150)
Angle E=arctan (0.5 * M15/M16-0.5 * M13/M16)
M18＝400～500
R5＝350～500
R6＝200～250
The design formula of crank cotter pin section shaping mould is:
M5＝M1
M6＝20～30
The M7=W2 base
The M8=H1 base
M12＝0.5×(W1-W2)/tanβ
F＝E
M9＝M13-(10～20)
M10=(W1 base+W2 base)/2+ (120～200)
R3=Φ
Zero/ 2+ (100～150)
R4＝R6
Angle G=β
Angle D=α
C＝r-90°
wherein, M1 represents the width of snap gauge in side pressure card circle mould, M3 represents the thickness of curved forging patrix both wings, M4 represents the deep-slotted chip breaker inboard of curved forging patrix and the difference in height in the outside, R1 represents the radius of curved forging patrix work circular arc, B represents the angle on curved forging patrix both wings and transition inclined-plane, r represents the obtuse angle angle of circular arc tangential line and horizontal sides, M5 represents the thickness of arc platform in crank cotter pin section shaping mould, M6 represents the difference in height of arc platform minimum point and die cavity bottom surface in crank cotter pin section shaping mould, M7 represents the cavity width cut apart by the arc platform in crank cotter pin section shaping mould, M8 represents the cavity length cut apart by the arc platform in crank cotter pin section shaping mould, M9 represents the total length of crank cotter pin section's shaping mould bottom surface, M10 represents the overall width of crank cotter pin section's shaping mould bottom surface, M12 represents the cavity depth capacity cut apart by the arc platform in crank cotter pin section shaping mould, M17 represents the total height of crank cotter pin section shaping mould, F represents the gradient of a pair of external surface of crank cotter pin section's shaping mould, R3 represents the radius of arc platform in crank cotter pin section shaping mould, R4 represents the bottom surface seamed edge fillet of crank cotter pin section shaping mould, G represents the inclination angle of the work die face that the forging hypotenuse corresponding with angle β base fitted, D represents the inclination angle of the working face that the forging hypotenuse corresponding with angle α base fitted, M13 represents the width of the front die cavity internal orifice of curved forging counterdie spill working face bottom width rounding, M14 represents the width of curved forging counterdie base, M15 represents the width of the front die cavity collar extension of curved forging counterdie rounding, M16 represents the degree of depth of curved forging counterdie, E represents the angle of inclination of curved forging counterdie die cavity inner surface, M18 represents the total length of curved forging counterdie base, R5 represents the radius of curved forging counterdie die cavity outer rim fillet, R6 represents the radius of curved forging counterdie die cavity inner edge fillet.
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| CN201110385712.6A CN103128209B (en) | 2011-11-28 | 2011-11-28 | The semi-stamping method of argosy crank throw and device |
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|---|---|---|---|
| CN201110385712.6A CN103128209B (en) | 2011-11-28 | 2011-11-28 | The semi-stamping method of argosy crank throw and device |
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| CN103128209B CN103128209B (en) | 2015-10-28 |
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| CN107520394A (en) * | 2017-08-10 | 2017-12-29 | 燕山大学 | The technological equipment and method of crank throw are forged on double action hydraulic press |
| CN108127062A (en) * | 2017-12-27 | 2018-06-08 | 武汉重工铸锻有限责任公司 | A kind of semi-circular plate semi-automation die forging production system |
| CN108291269A (en) * | 2016-01-08 | 2018-07-17 | 株式会社神户制钢所 | Large crankshaft |
| CN108907050A (en) * | 2018-06-12 | 2018-11-30 | 湖北三环锻造有限公司 | Knuckle arm end cold-coining moulding process |
| CN109622856A (en) * | 2018-12-13 | 2019-04-16 | 中国兵器工业第五九研究所 | A kind of full-fibre crankshaft upsetting extrusion process composable mold axial spacing method of adjustment |
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| CN114260406A (en) * | 2021-12-07 | 2022-04-01 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Manufacturing method of GH4169 alloy die forging |
| CN114346144A (en) * | 2022-01-20 | 2022-04-15 | 中聚信海洋工程装备有限公司 | Two-fire forming forging process for large crank |
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|---|---|---|---|---|
| CN108291269A (en) * | 2016-01-08 | 2018-07-17 | 株式会社神户制钢所 | Large crankshaft |
| CN107520394A (en) * | 2017-08-10 | 2017-12-29 | 燕山大学 | The technological equipment and method of crank throw are forged on double action hydraulic press |
| CN108127062B (en) * | 2017-12-27 | 2023-06-02 | 武汉重工铸锻有限责任公司 | Semi-automatic die forging production system for semicircular plates |
| CN108127062A (en) * | 2017-12-27 | 2018-06-08 | 武汉重工铸锻有限责任公司 | A kind of semi-circular plate semi-automation die forging production system |
| CN108907050A (en) * | 2018-06-12 | 2018-11-30 | 湖北三环锻造有限公司 | Knuckle arm end cold-coining moulding process |
| CN109622856A (en) * | 2018-12-13 | 2019-04-16 | 中国兵器工业第五九研究所 | A kind of full-fibre crankshaft upsetting extrusion process composable mold axial spacing method of adjustment |
| CN109622856B (en) * | 2018-12-13 | 2020-06-05 | 中国兵器工业第五九研究所 | Axial distance adjusting method for combined die in full-fiber crankshaft upsetting-extruding forming process |
| CN113305262A (en) * | 2021-06-30 | 2021-08-27 | 重庆凯斯瑞机电设备有限公司 | High-strength one-bridge swing arm forging process |
| WO2023071376A1 (en) * | 2021-10-28 | 2023-05-04 | 中聚信海洋工程装备有限公司 | Combined anvil die for forging large crank throw, and process |
| CN114260406A (en) * | 2021-12-07 | 2022-04-01 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Manufacturing method of GH4169 alloy die forging |
| CN114260406B (en) * | 2021-12-07 | 2023-10-17 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Manufacturing method of GH4169 alloy die forging |
| CN114346144A (en) * | 2022-01-20 | 2022-04-15 | 中聚信海洋工程装备有限公司 | Two-fire forming forging process for large crank |
| WO2023138030A1 (en) * | 2022-01-20 | 2023-07-27 | 中聚信海洋工程装备有限公司 | Two-fire forming forging process for large crank throw |
| CN114346144B (en) * | 2022-01-20 | 2024-01-26 | 中聚信海洋工程装备有限公司 | Two-shot forming forging process for large crank |
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Effective date of registration: 20161209 Address after: 200245 Jiangchuan Road, Shanghai, No. 207, building 1800, No. Patentee after: Shanghai Electric Heavy Forging Co. Ltd. Patentee after: Shanghai Heavy Machines Plant Co., Ltd. Address before: 200245 Jiangchuan Road, Shanghai, No. 1800, No. Patentee before: Shanghai Heavy Machines Plant Co., Ltd. |