CN109290503A - The hollow nearly molding forging method of big MW wind power principal axis - Google Patents

The hollow nearly molding forging method of big MW wind power principal axis Download PDF

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Publication number
CN109290503A
CN109290503A CN201810978770.1A CN201810978770A CN109290503A CN 109290503 A CN109290503 A CN 109290503A CN 201810978770 A CN201810978770 A CN 201810978770A CN 109290503 A CN109290503 A CN 109290503A
Authority
CN
China
Prior art keywords
punching
special
drain cap
wind power
principal axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810978770.1A
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Chinese (zh)
Inventor
廉荣光
李新生
时乐智
陈文全
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANDONG LAIWU JINLEI WIND POWER TECHNOLOGY Co Ltd
Original Assignee
SHANDONG LAIWU JINLEI WIND POWER TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANDONG LAIWU JINLEI WIND POWER TECHNOLOGY Co Ltd filed Critical SHANDONG LAIWU JINLEI WIND POWER TECHNOLOGY Co Ltd
Priority to CN201810978770.1A priority Critical patent/CN109290503A/en
Publication of CN109290503A publication Critical patent/CN109290503A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/002Hybrid process, e.g. forging following casting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08Upsetting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/10Piercing billets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/06Making machine elements axles or shafts
    • B21K1/063Making machine elements axles or shafts hollow

Abstract

The hollow nearly molding forging method of big MW wind power principal axis, it is characterised in that: comprising the following specific steps step 1: by Heating Steel Ingots to 1200-1250 DEG C, then heat preservation carries out chamfered edge, goes the mouth of a river, jumping-up, blanking after pulling;Step 2: then heat preservation squeezes drain cap jumping-up using Special reverse, then by the dedicated downward punching of punching plug to certain altitude, then using dedicated punching core bar drawing to certain size by the Heating Steel Ingots after the first step to 1200-1250 DEG C;Step 3: by after second step steel ingot be heated to 1200-1250 DEG C, then heat preservation squeezes drain cap jumping-up using Special reverse, using the downward punching of special core rod to certain altitude, then print off flange number to come;Step 4: by being heated to 1150-1250 DEG C after third step, heat preservation, then drain cap gathering stock flange, finally by flange forming, finishing, finished product out.The present invention solves the problems, such as the very small wind power principal axis production of small head end inner hole, greatly reduces the waste of production process chinese raw materials, production cost is low.

Description

The hollow nearly molding forging method of big MW wind power principal axis
Technical field
The present invention relates to technical field of wind power, are specifically the hollow nearly molding forging methods of big MW wind power principal axis.
Background technique
As wind-power electricity generation is quickly grown, and the model of blower also tends to enlargement, while wind power principal axis specification Develop to enlargement, 5 megawatts, 6 megawatts etc. big MW wind power principal axis main shaft is constantly released.Large-scale MW wind power principal axis mainly divides three Point, flange and axle body and inner hole;And inner hole is mostly irregular shape, and it is very big close to flange end inner hole, more to axle body inner hole Diameter is smaller.Forging at present is substantially solid forging, and inner hole is completed by subsequent machining.But as inner hole constantly increases Greatly, more and more, high expensive increasingly severe to the waste of raw material, this skill are gone to expect in center during solid spindle processing Art can no longer meet demand for development.
Summary of the invention
To achieve the goals above, the present invention provides the hollow nearly molding forging methods of big MW wind power principal axis.This hair It is bright by the rushing of inner hole, backward extrusion technology, solve the wind power principal axis of small head end blind hole;Solves small head end inner hole very simultaneously The problem of small wind power principal axis produces, greatly reduces the waste of production process chinese raw materials, production cost is low.
To achieve the goals above, the technical solution adopted by the present invention are as follows: comprising the following specific steps
Step 1: by Heating Steel Ingots to 1200-1250 DEG C, then heat preservation carries out chamfered edge, goes the mouth of a river, jumping-up, blanking after pulling;
Step 2: by the Heating Steel Ingots after the first step to 1200-1250 DEG C, then heat preservation squeezes drain cap upsetting using Special reverse Slightly, then by the dedicated downward punching of punching plug to certain altitude, then using dedicated punching core bar drawing to certain size;
Step 3: by after second step steel ingot be heated to 1200-1250 DEG C, then heat preservation squeezes drain cap upsetting using Special reverse Slightly, using the downward punching of special core rod to certain altitude, then flange number is printed off to come, using dedicated punching core bar drawing axle body Position is to process;
Step 4: being kept the temperature being heated to 1150-1250 DEG C after third step, then drain cap gathering stock flange, finally By flange forming, finishing, finished product out.
In order to further realize the present invention, the technical solution that can also use are as follows: the Special reverse squeezes drain cap and is integrally in Cylindrical block, cylindrical block whole height H=1300mm, outer diameter D=2600mm, Special reverse squeeze the intermediate of drain cap and upsetting hole, upsetting are arranged Hole is made of the straight hole with taper and horn mouth, and horn mouth is located at the top of straight hole, height L1=400mm of straight hole part, straight hole Diameter D1=900mm, taper b=88 °, angle b=145 ° of horn mouth and straight hole, straight hole and horn mouth intersection place and Horn mouth squeezes the place that plane intersects on drain cap with Special reverse and is respectively provided with rounded corner, rounding radii R4=200mm.The use Punching plug includes main body stick, entire length L1=3100mm of main body stick, radius R1=425mm of main body stick;It is set on main body stick Set formed punch end, the radius R3=100mm at formed punch end, the length L2=300mm at formed punch end;Truncated cone-shaped is set between main body stick and formed punch end Structure, gradient a=165 ° of truncated cone-shaped structure.The circumferentially arranged groove in upper end of the main body stick, the radius R2 of groove= 200mm.In the second step, after Special reverse squeezes drain cap jumping-up, drain cap is squeezed by the downward punching press of special core rod and Special reverse Blind hole is rushed in the anti-effect of squeezing upwards, and the depth of blind hole can be made effectively to rise to 1000-1200mm;Then, by blank to flange end one Side was fallen, and is accommodated dedicated punching plug with operation machine, is pulled out blank with hammering block.In the third step, special core rod it is downward Anti- blind hole is rushed in the effect of squeezing upwards for punching press and the crowded drain cap of Special reverse, so that the depth of blind hole is increased to 1000-1200m, then, by base Expect to fall to flange end side, accommodates dedicated punching plug with operation machine, pulled out blank with hammering block, number print forged flange;This Advantageous effect of the invention are as follows: the present invention solves the problems, such as the forging technology of the inner hole abnormity of big MW wind power principal axis;Pass through special tool Tool realizes the punching repeatedly of inner hole, backward extrusion technology, and dedicated punching plug uses super large designed arc-shaped appearance, avoids the occurrence of the folding of inner hole It is folded, it can be achieved that punching repeatedly, while its design is consistent with product inner hole, can also realize the function of pulling.Special reverse squeezes drain cap Lower end is straight hole, and upper end is designed for horn mouth, can promote blank upward along taper while punching, to realize anti-squeeze. Meanwhile the design with taper and circular arc fold defect can also occur in the process to avoid pulling.Punching plug and anti-crowded drain cap two A special tooling uses the technical problem that can solve that punching plug shrinks back during common method pulls out simultaneously.Thus solve The wind power principal axis for small head end blind hole of having determined;It is suitable for the problem of very small hollow wind power principal axis of small head end inner hole produces simultaneously. The present invention realizes the irregularly-shaped hole forging of big MW wind power principal axis, and forging cost is lower than solid forging cost, and forging process is grasped Make very convenient and practical.Forging of inner hole remains the forging fibr tissue of inner hole, makes the performance of inner hole more superior.In addition lead to It crosses hollow forging and saves raw material and process time.
Detailed description of the invention
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
Fig. 1 is the special core rod structural schematic diagram of the hollow nearly molding forging of big MW wind power principal axis in the present invention;
Fig. 2 is that the Special reverse of the hollow nearly molding forging of big MW wind power principal axis in the present invention squeezes drain cap structural schematic diagram;
Fig. 3 squeezes jumping-up structural schematic diagram in drain cap in Special reverse for blank;
Fig. 4 is that the downward punching press of dedicated punching plug and the crowded drain cap of Special reverse instead squeeze act on structural schematic diagram when rushing blind hole upwards;
Structural schematic diagram when Fig. 5 is special core rod punching and drain cap backward extrusion;
Fig. 6 is structural schematic diagram when dedicated punching core bar drawing number prints flange;
Fig. 7 is that axle body position is pulled out to structural schematic diagram when forming;
Structural schematic diagram when Fig. 8 is flange position gathering stock;
Structural schematic diagram when Fig. 9 is finishing, molding.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
The hollow nearly molding forging method of big MW wind power principal axis, comprising the following specific steps
Step 1: by Heating Steel Ingots to 1200-1250 DEG C, then heat preservation carries out chamfered edge, goes the mouth of a river, jumping-up, blanking after pulling;
Step 2: by the Heating Steel Ingots after the first step to 1200-1250 DEG C, heat preservation, as shown in figure 3, then using dedicated It is anti-squeeze drain cap jumping-up (Fig. 2) pass through the dedicated downward punching of punching plug to certain height again as shown in Figure 4 after drain cap jumping-up Degree, squeezing drain cap by the downward punching press of dedicated punching plug and Special reverse as shown in Figure 5, anti-blind hole is rushed in the effect of squeezing upwards, is then adopted With dedicated punching core bar drawing to certain size;Blind hole depth is to 1000-1200mm;Then, blank is put to flange end side , special core rod is accommodated with operation machine, is pulled out blank with hammering block.
Step 3: by after second step hollow shaft be heated to 1200-1250 DEG C, heat preservation, as shown in figure 5, using special With the punching press downward again of punching plug, squeezing drain cap by punching press and Special reverse, anti-blind hole is rushed in the effect of squeezing upwards, and blind hole depth is again It is secondary to reach 1000-1200m, blank was fallen to flange end side, special core rod is accommodated with operation machine, is pulled out blank with hammering block It is long, using dedicated punching core bar drawing axle body position to process;Then, as shown in fig. 6, blank is put to flange end side , special core rod is accommodated with operation machine, is pulled out blank with hammering block, then number print forged flange;This has been heated to be in solution Due to dedicated punching plug band taper during pulling in fiery time, what inner hole caused by plug retreats during pulling became smaller is asked Topic.Therefore punching again is needed.And dedicated punching plug prevents the folding problem of punching again well.Blind hole punching is to before Depth, anti-crowded position diameter increases upwards;It is formed as shown in fig. 7, finally pulling out axle body position.
Step 4: the hollow shaft after third step is heated to 1150-1250 DEG C, heat preservation, as shown in figure 8, then leaking Disk gathering stock flange, finally by flange forming, finishing, finished product is as shown in Figure 9 out.
Special reverse used in the present invention squeezes drain cap, as shown in Fig. 2, cylindrical piece whole, cylindrical block whole height H1=1300mm, 0=2600mm of outer diameter D, Special reverse squeeze the intermediate of drain cap and upsetting hole are arranged, and upsetting hole is by straight hole 5 and loudspeaker with taper Mouth 6 forms, and horn mouth 6 is located at the top of straight hole 5, height H2=400mm of straight hole part, diameter D1=900mm of straight hole, taper The place and horn mouth 6 and Special reverse that C=88 °, angle b=145 ° of horn mouth 6 and straight hole, straight hole 5 and horn mouth 6 intersect are squeezed The place of drain cap upper surface intersection is respectively provided with rounded corner, rounding radii R4=200mm.
Dedicated punching plug used in the present invention, as shown in Figure 1, include main body stick 1, the entire length L1 of main body stick 1= 3100mm, radius R1=425mm of main body stick 1;Formed punch end 2, the radius R3=100mm at formed punch end 2, formed punch are set on main body stick 1 Length L2=the 300mm at end 2;Truncated cone-shaped structure 3 is set between main body stick 1 and formed punch end 2, the gradient a of truncated cone-shaped structure 3= 165°.In order to lift by crane convenient, the circumferentially arranged groove 4 in the upper end of the main body stick 1, the radius of groove 4 to this special core rod R2=200mm.Resistance suffered by the small downward punching of formed punch end radius of main body stick 1 is small, easy to use.And Rouno Cormer Pregrinding Wheel design exists Also fold defect can be prevented when multiple punching.
Specific forging process is as follows:
1, first steel ingot is carried out being heated to 1200-1250 DEG C of chamfered edge, then goes the mouth of a river, jumping-up, pulling, blanking;As shown in Figure 3;
2, using dedicated punching plug punching.As shown in Figure 4;
3, anti-blind hole is rushed in the effect of squeezing upwards for the downward punching press of special punch and the crowded drain cap of Special reverse.As shown in Figure 4 and Figure 5;
4, blank was fallen to flange end side, and accommodated special core rod with operation machine, is pulled out blank with hammering block, number print forging method Orchid, as shown in Figure 6;
5, the pulling molding of axle body position is as shown in Figure 7;
6, held for some time after heating, gathering stock flange of coming out of the stove, finishing molding, as shown in Fig. 8 and Fig. 9 are melted down.
Certainly, above description is also not limited to the example above, technical characteristic of the present invention without description can by or It is realized using the prior art, details are not described herein;It is not to this that the above examples are only used to illustrate the technical scheme of the present invention The limitation of invention, describes the invention in detail referring to preferred embodiment, and those skilled in the art should Understand, the variations, modifications, additions or substitutions that those skilled in the art are made within the essential scope of the present invention Without departure from spirit of the invention, it also should belong to claims of the invention.

Claims (6)

1. the hollow nearly molding forging method of big MW wind power principal axis, it is characterised in that: comprising the following specific steps
Step 1: by Heating Steel Ingots to 1200-1250 DEG C, then heat preservation carries out chamfered edge, goes the mouth of a river, jumping-up, blanking after pulling;
Step 2: by the Heating Steel Ingots after the first step to 1200-1250 DEG C, then heat preservation squeezes drain cap upsetting using Special reverse Slightly, then by the dedicated downward punching of punching plug to certain altitude, then using dedicated punching core bar drawing to certain size;
Step 3: by after second step steel ingot be heated to 1200-1250 DEG C, then heat preservation squeezes drain cap upsetting using Special reverse Slightly, using the downward punching of special core rod to certain altitude, then flange number is printed off to come, using dedicated punching core bar drawing axle body Position is to process;
Step 4: being kept the temperature being heated to 1150-1250 DEG C after third step, then drain cap gathering stock flange, finally By flange forming, finishing, finished product out.
2. the hollow nearly molding forging method of big MW wind power principal axis according to claim 1, it is characterised in that: described Special reverse squeezes integrally cylindrical piece of drain cap, and cylindrical block whole height H1=1300mm, 0=2600mm of outer diameter D, Special reverse, which squeezes, to be leaked Upsetting hole is arranged in the intermediate of disk, and upsetting hole is made of the straight hole (5) with taper and horn mouth (6), and horn mouth (6) is located at straight hole (5) Top, height H2=400mm of straight hole part, diameter D1=900mm of straight hole, taper C=88 °, the angle of horn mouth (6) and straight hole B=145 ° are spent, what drain cap upper surface was intersected squeezed with Special reverse in the place and horn mouth (6) of straight hole (5) and horn mouth (6) intersection Place is respectively provided with rounded corner, rounding radii R4=200mm.
3. the hollow nearly molding forging method of big MW wind power principal axis according to claim 1, it is characterised in that: described It include main body stick (1), entire length L1=3100mm of main body stick (1), radius R1=425mm of main body stick (1) with punching plug; Formed punch end (2) are set on main body stick (1), the radius R3=100mm of formed punch end (2), the length L2=300mm of formed punch end (2);Main body Truncated cone-shaped structure (3) are set between stick (1) and formed punch end (2), gradient a=165 ° of truncated cone-shaped structure (3).
4. the hollow nearly molding forging method of big MW wind power principal axis according to claim 3, it is characterised in that: described The circumferentially arranged groove in upper end (4) of main body stick (1), radius R2=200mm of groove (4).
5. the hollow nearly molding forging method of big MW wind power principal axis according to any one of claims 1 to 4, feature exist In: in the second step, after Special reverse squeezes drain cap jumping-up, it is upward that drain cap is squeezed by the downward punching press of special core rod and Special reverse Blind hole is rushed in the anti-effect of squeezing, and the depth of blind hole can be made effectively to rise to 1000-1200mm;Then, blank is put to flange end side , dedicated punching plug is accommodated with operation machine, is pulled out blank with hammering block.
6. special core rod according to any one of claims 1 to 4 and drain cap forge the hollow close molding of MW wind power principal axis Method, it is characterised in that: in the third step, the downward punching press of special core rod and Special reverse squeeze drain cap upwards anti-the effect of squeezing rush it is blind Hole still makes the depth of blind hole increase to 1000-1200m, and then, blank was fallen to flange end side, special with operation machine aid With punching plug, blank is pulled out with hammering block, number print forged flange.
CN201810978770.1A 2018-08-27 2018-08-27 The hollow nearly molding forging method of big MW wind power principal axis Pending CN109290503A (en)

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CN201810978770.1A CN109290503A (en) 2018-08-27 2018-08-27 The hollow nearly molding forging method of big MW wind power principal axis

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Application Number Priority Date Filing Date Title
CN201810978770.1A CN109290503A (en) 2018-08-27 2018-08-27 The hollow nearly molding forging method of big MW wind power principal axis

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111112534A (en) * 2020-01-02 2020-05-08 上海电气上重铸锻有限公司 Third-generation nuclear power coolant pump shell profile forging stepped core rod and application
CN111468668A (en) * 2020-05-11 2020-07-31 张家港广大特材股份有限公司 Wind power main shaft forging process

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Publication number Priority date Publication date Assignee Title
CN101362156A (en) * 2008-09-05 2009-02-11 邓晓光 Deep-hole extrusion molding technique of intermediate carbon low-alloy structural steel
CN101829697A (en) * 2010-05-06 2010-09-15 胡杰 One-die double-top extrusion forming technology for automotive axle housing tube or engineering mechanical supporting axle
CN103008521A (en) * 2012-10-22 2013-04-03 沈阳黎明航空发动机(集团)有限责任公司 Forming die for conic forgings and forming method thereof
CN105057539A (en) * 2015-09-14 2015-11-18 通裕重工股份有限公司 Forging mold and method for blind hole forge piece
CN205128812U (en) * 2015-08-24 2016-04-06 韶关市德丰机械有限公司 Dark blind hole cylinder forging child contour forming device
CN106238661A (en) * 2016-08-26 2016-12-21 江阴振宏重型锻造有限公司 The hollow forging technique of large-scale wind electricity main-axis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101362156A (en) * 2008-09-05 2009-02-11 邓晓光 Deep-hole extrusion molding technique of intermediate carbon low-alloy structural steel
CN101829697A (en) * 2010-05-06 2010-09-15 胡杰 One-die double-top extrusion forming technology for automotive axle housing tube or engineering mechanical supporting axle
CN103008521A (en) * 2012-10-22 2013-04-03 沈阳黎明航空发动机(集团)有限责任公司 Forming die for conic forgings and forming method thereof
CN205128812U (en) * 2015-08-24 2016-04-06 韶关市德丰机械有限公司 Dark blind hole cylinder forging child contour forming device
CN105057539A (en) * 2015-09-14 2015-11-18 通裕重工股份有限公司 Forging mold and method for blind hole forge piece
CN106238661A (en) * 2016-08-26 2016-12-21 江阴振宏重型锻造有限公司 The hollow forging technique of large-scale wind electricity main-axis

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111112534A (en) * 2020-01-02 2020-05-08 上海电气上重铸锻有限公司 Third-generation nuclear power coolant pump shell profile forging stepped core rod and application
CN111468668A (en) * 2020-05-11 2020-07-31 张家港广大特材股份有限公司 Wind power main shaft forging process

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Application publication date: 20190201