CN111906507B - High-efficiency low-cost production process for wind power gear shaft - Google Patents
High-efficiency low-cost production process for wind power gear shaft Download PDFInfo
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- CN111906507B CN111906507B CN202010543854.XA CN202010543854A CN111906507B CN 111906507 B CN111906507 B CN 111906507B CN 202010543854 A CN202010543854 A CN 202010543854A CN 111906507 B CN111906507 B CN 111906507B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000005242 forging Methods 0.000 claims abstract description 62
- 238000000034 method Methods 0.000 claims abstract description 37
- 230000008569 process Effects 0.000 claims abstract description 24
- 238000000227 grinding Methods 0.000 claims abstract description 15
- 238000007689 inspection Methods 0.000 claims abstract description 15
- 238000003801 milling Methods 0.000 claims abstract description 11
- 238000005553 drilling Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000006247 magnetic powder Substances 0.000 claims abstract description 4
- 238000010791 quenching Methods 0.000 claims description 84
- 230000000171 quenching effect Effects 0.000 claims description 83
- 229910000831 Steel Inorganic materials 0.000 claims description 56
- 239000010959 steel Substances 0.000 claims description 56
- 239000002184 metal Substances 0.000 claims description 40
- 239000007787 solid Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims 1
- 230000007246 mechanism Effects 0.000 description 12
- 238000005265 energy consumption Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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Abstract
The invention discloses a high-efficiency low-cost production process of a wind power gear shaft, which comprises the following process steps in sequence: finish forging, end face milling, center hole drilling, semi-finish turning, gear hobbing, chamfering, heat treatment, center hole grinding, finish turning, finish grinding, gear grinding, magnetic powder inspection, burn inspection and final inspection; the size of a precision forging die adopted during precision forging is larger than that of a finished product, and the single-side allowance of the finished product is 2 mm; and the two procedures of milling the end face and drilling the central hole adopt one tool to simultaneously process the central holes of the two end faces of the two wind power gear shafts. The invention optimizes two procedures, greatly shortens the delivery period and plays a certain leading role in subsequent processing; the processing precision is improved. Not only saves the cost, but also reduces the turning time and improves the processing efficiency.
Description
Technical Field
The invention relates to a high-efficiency low-cost production process of a wind power gear shaft.
Background
The general processing technological process of the wind power gear shaft is as follows: blanking, rough turning, normalizing, semi-finish turning, end face splitting, central hole punching, gear hobbing, chamfering, carburizing and quenching, center hole grinding, finish turning of external threads, finish grinding of excircle and end face, gear grinding, magnetic particle inspection, burn inspection and final inspection. The splitting surface is processed by clamping one top of an upper machine tool; the processing according to the above not only increases the cost, but also has long period, and seriously influences the delivery date.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a high-efficiency and low-cost production process of a wind power gear shaft.
In order to achieve the purpose, the technical scheme of the invention is to design a high-efficiency low-cost production process of a wind power gear shaft, which comprises the following process steps in sequence: finish forging, end face milling, center hole drilling, semi-finish turning, gear hobbing, chamfering, heat treatment, center hole grinding, finish turning, finish grinding, gear grinding, magnetic powder inspection, burn inspection and final inspection; the size of a precision forging die adopted during precision forging is larger than that of a finished product, and the single-side allowance of the finished product is 2 mm; and two procedures of milling end faces and drilling a center hole adopt one tool to simultaneously process the center holes of the two end faces of the two wind power gear shafts. The semi-finish turning process is placed behind the center hole, so that the outer circle and the two center benchmarks are on the same axis, and the machining precision is improved. The process of precision forging replaces the original two-step process (rough turning and normalizing), so that the cost is saved, the turning time is shortened, and the processing efficiency is improved. The tool adopts a Home-Hision horizontal machining center produced by Ningbo Haitan precision engineering Limited company, and the two shafts are clamped by the tool to machine center holes on two end faces together. And the shaft diameters of the two central holes are one line, so that the important guarantee is provided for subsequent processing.
The technical scheme is that the precision forging die comprises a lower die and an upper die cover matched with the lower die, the lower die is cylindrical in shape, a stepped hole used for forming the wind power gear shaft is formed in the middle of the lower die, the size of the stepped hole is gradually reduced from top to bottom, the upper die cover is three-step-pillar-shaped and is gradually reduced from top to bottom, and the minimum size pillar of the upper die cover is matched with the uppermost hole of the stepped hole.
The further technical scheme is that the diameter of the minimum-size column of the upper die cover is 334mm, and the height of the minimum-size column is 49 mm; the hole depth of the uppermost hole of the stepped hole is 203 mm.
The further technical scheme is that a quenching process is arranged between the finish forging process and the end face milling process.
The quenching bath used in the quenching process comprises a quenching bath body and a supporting piece used for enabling a piece to be quenched to swing or vibrate, wherein the supporting piece is connected to the side wall of the quenching bath body; the piece to be quenched is the wind power gear shaft; the quenching bath body is in a cuboid shape, and the supporting pieces are connected to two opposite side walls of the quenching bath body. Due to the fact that the size of the forged piece is large, steam generated on the lower surface after quenching enters water cannot be discharged in time, cooling speeds of the upper surface and the lower surface are uneven, performance differences of all parts of the forged piece are large, and technical condition requirements cannot be met. Particularly, for quenching of large wind power ring forgings or wind power shaft forgings such as wind power flanges, wind power main shafts, wind power gear shafts and the like, the areas of the lower surfaces of the large wind power ring forgings or the large wind power shaft forgings are large, so that steam films are easily formed on the lower surfaces of the large wind power ring forgings or the large wind power shaft forgings, the cooling speed is uneven, and the performance difference of all parts of the forgings is large; at present, a forge piece is lifted by a travelling crane and is inclined into a quenching bath, so that the lower surface of the forge piece has an inclination angle with the horizontal plane, the discharge of steam is facilitated, and the forging quenching furnace can also swing or vibrate properly to enhance the steam discharge effect or crack the steam, but the travelling crane is occupied by the method and needs an experienced operator to operate the travelling crane. Yet another way is to increase the flow, tumbling, of the water stream, which requires powerful stirring devices. And a large-power stirring device is not needed after the quenching bath is adopted. The support piece is arranged to enable the piece to be quenched to swing or vibrate, steam on the surface of the large forging piece can be conveniently broken when the large forging piece is quenched, a steam film is eliminated to the maximum extent, the quenching uniformity of the large forging piece is improved, a travelling crane is not occupied, and travelling crane resources are saved.
The further technical scheme is that the quenching bath body is cuboid, and the supporting pieces are connected to two opposite side walls of the quenching bath body; the wind power ring forging is a wind power tower flange, a gear ring or a slewing bearing; the wind power shaft forging is a wind power main shaft.
The further technical scheme is that the supporting piece is a rectangular metal string bag used for enabling the piece to be quenched to swing, one side of the metal string bag is fixedly connected to the wall of the quenching bath body, and the other side of the metal string bag is connected with the lifting mechanism; the wind power ring forging is a wind power tower flange, a gear ring or a slewing bearing; the wind power shaft forging is a wind power main shaft. Therefore, the lower surface of the forging is still fully contacted with quenching liquid (generally water), and one side edge of the forging can be lifted, so that the piece to be quenched swings after being placed on the metal net bag, steam on the surface of the large forging is conveniently broken when the large forging is quenched, a steam film is eliminated to the maximum extent, and the quenching uniformity of the large forging is improved.
The further technical proposal is that the lifting mechanism is a hydraulic driving mechanism, and a piston rod of the lifting mechanism is fixedly connected with the metal net bag through a steel wire rope. Considering that the wind power forging has a large size and other driving mechanisms cannot work, the driving mechanism is a hydraulic cylinder.
The other technical scheme is that the supporting pieces are at least two steel wire ropes used for enabling the to-be-quenched piece to vibrate, vertical sliding rails are arranged at two ends of the top of the first side face of the quenching bath body, lifting plates are arranged on the vertical sliding rails in a matched mode, one ends of the steel wire ropes are fixedly connected to the side wall of the quenching bath body opposite to the vertical sliding rails, and the other ends of the steel wire ropes penetrate through gaps between the lifting plates and the first side face; the part of the steel wire rope, which is positioned outside the quenching bath body, is provided with a plurality of stop parts for gradually extending the steel wire rope positioned in the quenching bath body, the stop parts are arranged at equal intervals or at unequal intervals, the stop parts are smaller in size as the stop parts are closer to the lifting plate, a normally open lifting switch is arranged at the position, corresponding to the steel wire rope, on the lifting plate, and after the quenching piece is arranged on the steel wire rope, the stop parts touch the lifting switch to enable the lifting plate to be lifted. The forging piece is held by the steel wire rope, after the forging piece is placed on the steel wire rope, the steel wire rope is tightened, a first stop part of the forging piece is tightly leaned against the lifting plate, the normally-open lifting switch is pressed by the stop part and then closed, the lifting plate rises, the stop part penetrates through the clearance after the clearance between the lifting plate and the first side surface is larger than the first (namely the minimum size) stop part, the lifting switch returns to the normally-open state due to no pressing, the lifting plate does not rise any more, and the process is repeated when a second stop part touches the lifting switch; during the period from the time that the former stopping part passes through the gap to the time that the next stopping part abuts against the lifting plate, the steel wire rope in the quenching pool is elongated, the process that the forge piece descends is completed, and the steel wire rope is tightened when the next stopping part abuts against the lifting plate, so that the forge piece is vibrated. And need not manual operation, utilize its dead weight to descend gradually, accomplish vibrations, the energy consumption is also very low, only consumes some electric energy that makes the lifter plate rise when the locking part touches the lift switch.
The further technical proposal is that the stopping part is a solid metal block or a solid metal column welded on the steel wire rope; or a wire rope knot.
The other technical scheme is that the supporting pieces are at least two steel wire ropes used for enabling the to-be-quenched piece to vibrate, the first side face of the quenching bath body is higher than the other three side faces, a rectangular hole or a circular hole used for the steel wire rope to penetrate through is formed in the first side face, one end of the steel wire rope is fixedly connected to the side face, opposite to the first side face, of the quenching bath body, and the other end of the steel wire rope penetrates through the rectangular hole or the circular hole; the part of the steel wire rope, which is positioned outside the quenching bath body, is provided with a plurality of stopping parts for gradually extending the steel wire rope positioned in the quenching bath body, and the stopping parts are arranged at equal intervals or unequal intervals and have the same size; the stopping part is a hollow metal triangular cone welded on the steel wire rope. The scheme is that one steel wire rope is used for replacing one steel wire rope, and the flattened hollow metal triangular cone needs to be taken out and then welded again, so that energy consumption is avoided, and the hollow metal triangular cone needs to be replaced regularly.
The further technical scheme is that a sliding part composed of two fixedly connected grid metal plates is arranged above the steel wire rope in the quenching bath body, and the included angle alpha of the two grid metal plates satisfies the following conditions: 180 ° > α > 90 °; the sliding parts are slidably arranged on two opposite side walls of the quenching bath body. The arrangement is matched with the steel wire rope, so that the forged piece in quenching can be more stable, and the two grid metal plates are not parallel, so that the forged piece can be obliquely arranged in the quenching process, and steam on the lower surface of the forged piece can be conveniently discharged; the grid metal plate also ensures that the surface of the forging directly contacted with the sliding part is still fully contacted with the quenching liquid, and the grid shape is convenient for the cracking of steam to a certain degree.
The invention has the advantages and beneficial effects that:
1. the large forging piece quenching device has the advantages that a traveling crane is not occupied, steam on the surface of the large forging piece is conveniently broken when the large forging piece is quenched, a steam film is eliminated to the maximum extent, the quenching uniformity of the large forging piece is improved, even the steam film is eliminated by gradually vibrating the large forging piece through the dead weight of the large forging piece, manual operation is not needed, and energy consumption is low.
2. The support piece is arranged to enable the piece to be quenched to swing or vibrate, steam on the surface of the large forging piece can be conveniently broken when the large forging piece is quenched, a steam film is eliminated to the maximum extent, the quenching uniformity of the large forging piece is improved, a travelling crane is not occupied, and travelling crane resources are saved.
3. The metal net bag is arranged, so that the lower surface of the forged piece is still fully contacted with quenching liquid (generally water), and one side edge of the metal net bag can be lifted, so that the to-be-quenched piece can swing after being arranged on the metal net bag, steam on the surface of the large forged piece can be conveniently cracked during quenching, a steam film can be eliminated to the maximum extent, and the quenching uniformity of the large forged piece can be improved.
4. The lifting plate and the lifting switch are arranged without manual operation, the lifting plate gradually descends by utilizing the dead weight of the lifting plate to finish vibration, the energy consumption is very low, and electric energy for lifting the lifting plate is only consumed when the stopping part touches the lifting switch.
5. The hollow metal triangular cone is arranged without energy consumption, and gradual descending and vibration can be realized by using the self weight of the forge piece and overcoming the force of the hollow metal triangular cone becoming flat.
6. The arrangement of the grid metal plates is matched with the steel wire ropes, so that the forged piece in quenching can be more stable, and the two grid metal plates are not parallel to each other, so that the forged piece can be obliquely arranged in the quenching process, and steam on the lower surface of the forged piece can be conveniently discharged; the grid metal plate also ensures that the surface of the forging directly contacted with the sliding part is still fully contacted with the quenching liquid, and the grid shape is convenient for the cracking of steam to a certain degree.
7. Two procedures are optimized, the delivery cycle is greatly shortened, and certain leading effect is achieved on subsequent processing; the processing precision is improved. Not only saves the cost, but also reduces the time of turning and improves the processing efficiency.
Drawings
FIG. 1 is a schematic view of an embodiment of a quenching bath in a high-efficiency low-cost production process of a wind power gear shaft of the invention, wherein a piece to be quenched is not shown;
FIG. 2 is a side view of FIG. 1 with the addition of a member to be quenched;
FIG. 3 is a schematic structural view of a member to be quenched, which is not shown in the second embodiment of the present invention;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a side view of FIG. 3 with the part to be quenched added;
FIG. 6 is a perspective view of the slider of FIG. 5;
FIG. 7 is a schematic structural view of a member to be quenched, which is not shown in the third embodiment of the present invention;
FIG. 8 is a schematic structural view of a member to be quenched, which is not shown in the fourth embodiment of the present invention;
FIG. 9 is a schematic structural view of a member to be quenched, which is not shown in the fifth embodiment of the present invention;
FIG. 10 is a schematic structural view of a member to be quenched according to a sixth embodiment of the present invention;
FIG. 11 is a schematic view of an upper die cover in a precision forging die used in the precision forging process of the present invention;
fig. 12 is a schematic view of the lower die of the precision forging die used in the precision forging process of the present invention.
In the figure: 1. a quenching bath body; 2. a workpiece to be quenched; 3. a metal string bag; 4. a lifting mechanism; 5. a wire rope; 6. a first side; 7. a slide rail; 8. a lifting plate; 9. a stopper portion; 10. a lifting switch; 11. a mesh metal plate; 12. a lower die; 13. and (5) putting a mold cover.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
as shown in fig. 11 to 12, the invention relates to a high-efficiency low-cost production process of a wind power gear shaft, which comprises the following process steps in sequence: finish forging, end face milling, center hole drilling, semi-finish turning, gear hobbing, chamfering, heat treatment, center hole grinding, finish turning, finish grinding, gear grinding, magnetic powder inspection, burn inspection and final inspection; the size of a precision forging die adopted during precision forging is larger than that of a finished product, and the single-side allowance of the finished product is 2 mm; and the two procedures of milling the end face and drilling the central hole adopt one tool to simultaneously process the central holes of the two end faces of the two wind power gear shafts. The precision forging die comprises a lower die 12 and an upper die cover 13 matched with the lower die 12, wherein the lower die 12 is cylindrical, a stepped hole used for forming a wind power gear shaft is formed in the middle of the lower die 12, the size of the stepped hole is gradually reduced from top to bottom, the upper die cover 13 is in a three-step stepped shape, the size of the upper die cover is gradually reduced from top to bottom, and the minimum size column of the upper die cover 13 is matched with the uppermost hole of the stepped hole. The diameter of the minimum dimension column of the upper die cover 13 is 334mm, and the height of the minimum dimension column is 49 mm; the hole depth of the uppermost hole of the stepped hole is 203 mm. A quenching procedure is also arranged between the finish forging procedure and the end face milling procedure. As shown in fig. 1 and 2, the quenching bath used in the quenching process comprises a quenching bath body 1 and a supporting member for swinging a piece to be quenched 2, wherein the supporting member is connected to the side wall of the quenching bath body 1; the part 2 to be quenched is a wind power ring forging or a wind power shaft forging. The quenching bath body 1 is cuboid, and the supporting pieces are connected to two opposite side walls of the quenching bath body 1; the wind power ring forging is a wind power tower cylinder flange, a gear ring or a slewing bearing; the wind power shaft type forge piece is a wind power main shaft. The supporting piece is a rectangular metal net bag 3 used for enabling the piece to be quenched 2 to swing, one side edge of the metal net bag 3 is fixedly connected to the wall of the quenching bath body 1, and the other side edge of the metal net bag is connected with the lifting mechanism 4; the wind power ring forging is a wind power tower cylinder flange, a gear ring or a slewing bearing; the wind power shaft type forge piece is a wind power main shaft. The lifting mechanism 4 is a hydraulic driving mechanism, and a piston rod of the lifting mechanism is fixedly connected with the metal net bag 3 through a steel wire rope 5.
The action process is as follows: after the piece to be quenched 2 is placed on the metal string bag 3 by the travelling crane, the travelling crane is removed, and the lifting mechanism 4 acts, so that one side of the metal string bag 3 rises upwards, the side which rises after one stroke falls back, and the piece to be quenched 2 swings when quenching is finished.
Example two:
the difference from the first embodiment is that, as shown in fig. 3 to 6, the supporting members are two steel wire ropes 5 for vibrating the to-be-quenched member 2, vertical slide rails 7 are arranged at two ends of the top of the first side surface 6 of the quenching bath body 1, a lifting plate 8 is arranged in a manner of being matched with the vertical slide rails 7, one end of each steel wire rope 5 is fixedly connected to the side wall of the quenching bath body 1 opposite to the vertical slide rails 7, and the other end of each steel wire rope 5 penetrates through a gap between the lifting plate 8 and the first side surface 6; the part of the steel wire rope 5, which is positioned outside the quenching bath body 1, is provided with a plurality of stop parts 9 for enabling the steel wire rope 5 positioned in the quenching bath body 1 to extend gradually, the stop parts 9 are arranged at equal intervals, the stop parts 9 are smaller in size as being closer to the lifting plate 8, a normally open lifting switch 10 is arranged at the position, corresponding to the steel wire rope 5, on the lifting plate 8, and after the quenching piece 2 is arranged on the steel wire rope 5, the stop parts 9 touch the lifting switch 10 to enable the lifting plate 8 to lift. The stopper 9 is a solid metal block welded to the wire rope 5. The upper part of the steel wire rope 5 in the quenching bath body 1 is provided with a sliding part consisting of two fixedly connected grid metal plates 11, and the included angle alpha of the two grid metal plates 11 meets the following requirements: 180 degree > alpha > 90 degree; the sliding pieces are arranged on two opposite side walls of the quenching bath body 1 in a sliding manner.
The action process is as follows: the piece 2 to be quenched is placed on the sliding piece through the traveling crane and then the traveling crane is removed, due to the existence of the forged piece, the steel wire rope is tightened, the smallest stopping part abuts against the lifting plate, the lifting switch is pressed, the lifting plate rises, when the gap between the lifting plate and the top of the first side face is larger than the height of the smallest stopping part, the smallest stopping part penetrates through the gap, the steel wire rope in the quenching bath body stretches, and due to the fact that the smallest stopping part (namely the first stopping part) penetrates through the gap, the lifting switch is not pressed, the lifting plate does not rise any more, the lifting plate rises again after the next stopping part reaches the lifting plate and presses the lifting switch, and the process is accompanied with the fact that the steel wire rope slightly stops when the next stopping part reaches the lifting plate, and therefore vibration of the forged piece is completed.
Example three:
the difference from the second embodiment is only that, as shown in fig. 7, the stopper 9 is a solid metal column welded to the wire rope 5;
example four:
the only difference from the second embodiment is that the stopper 9 is a wire knot, as shown in fig. 8.
Example five:
the difference from the first embodiment is that, as shown in fig. 9, the supporting members are two steel wire ropes 5 for vibrating the to-be-quenched member 2, the first side surface 6 of the quenching bath body 1 is higher than the other three side surfaces, the first side surface 6 is provided with a rectangular hole for the steel wire ropes 5 to pass through, one end of each steel wire rope 5 is fixedly connected to the side surface of the quenching bath body 1 opposite to the first side surface 6, and the other end of each steel wire rope 5 passes through the rectangular hole; the part of the steel wire rope 5, which is positioned outside the quenching bath body 1, is provided with a plurality of stopping parts 9 for gradually extending the steel wire rope 5 positioned in the quenching bath body 1, and the stopping parts 9 are equidistantly arranged and have consistent sizes; the stop part 9 is a hollow metal triangular cone welded on the steel wire rope 5.
Example six:
the difference from the fifth embodiment is only that the first side surface 6 is provided with a round hole for the steel cord 5 to pass through, as shown in fig. 10.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. The high-efficiency low-cost production process of the wind power gear shaft is characterized by comprising the following process steps which are carried out in sequence: finish forging, end face milling, center hole drilling, semi-finish turning, gear hobbing, chamfering, heat treatment, center hole grinding, finish turning, finish grinding, gear grinding, magnetic powder inspection, burn inspection and final inspection; the size of a precision forging die adopted during precision forging is larger than that of a finished product, and the single-side allowance of the finished product is 2 mm; the two procedures of end face milling and center hole drilling adopt a tool to simultaneously process center holes of two end faces of two wind power gear shafts; the precision forging die comprises a lower die and an upper die cover matched with the lower die, wherein the lower die is columnar, a stepped hole for forming a wind power gear shaft is formed in the middle of the lower die, the size of the stepped hole is gradually reduced from top to bottom, the upper die cover is in a three-step-column shape, the size of the upper die cover is gradually reduced from top to bottom, and the minimum-size column of the upper die cover is matched with the uppermost hole of the stepped hole; the diameter of the minimum-size column of the upper die cover is 334mm, and the height of the minimum-size column of the upper die cover is 49 mm; the hole depth of the uppermost hole of the stepped hole is 203 mm; a quenching process is also arranged between the finish forging process and the end face milling process; the quenching bath used in the quenching process comprises a quenching bath body and a supporting piece used for enabling a piece to be quenched to swing or vibrate, wherein the supporting piece is connected to the side wall of the quenching bath body; the piece to be quenched is the wind power gear shaft; the quenching bath body is in a cuboid shape, and the supporting pieces are connected to two opposite side walls of the quenching bath body; the supporting pieces are at least two steel wire ropes used for vibrating the piece to be quenched, vertical slide rails are arranged at two ends of the top of the first side surface of the quenching bath body, a lifting plate is arranged in a manner of being matched with the vertical slide rail, one end of a steel wire rope is fixedly connected to the side wall of the quenching bath body opposite to the vertical slide rail, the other end of the steel wire rope penetrates through a gap between the lifting plate and the first side surface, a plurality of stopping parts for gradually extending the steel wire rope in the quenching bath body are arranged on the part of the steel wire rope positioned outside the quenching bath body, the stopping parts are arranged at equal intervals or unequal intervals, the size of the stopping parts is smaller as the stopping parts are closer to the lifting plate, a normally open lifting switch is arranged on the lifting plate at the position corresponding to the steel wire rope, after a piece to be quenched is arranged on the steel wire rope, the stopping parts touch the lifting switch to lift the lifting plate, the stopping part is a solid metal block or a solid metal column welded on the steel wire rope or a steel wire rope knot; or two piece at least wire rope of support piece for being used for making waiting to quench a vibrations, the first side of quenching bath body is higher than other three side, and first side is equipped with rectangular hole or the round hole that is used for wire rope to pass, and wire rope one end fixed connection is just on the quenching bath body side of first side, and rectangular hole or round hole are passed to the other end, and wire rope's the part that is located the quenching bath body outside sets up the detent that is used for making the wire rope that is located the quenching bath body progressively extend, and the detent equidistance or unequal distance are equipped with a plurality of and its size unanimity, and the detent is the hollow metal triangular cone of welding on wire rope.
2. The high-efficiency low-cost production process of the wind power gear shaft according to claim 1, characterized in that a sliding part composed of two fixedly connected grid metal plates is arranged above the steel wire rope in the quenching bath body, and the included angle α between the two grid metal plates satisfies the following conditions: 180 ° > α > 90 °; the sliding parts are slidably arranged on two opposite side walls of the quenching bath body.
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| CN202010543854.XA CN111906507B (en) | 2020-06-15 | 2020-06-15 | High-efficiency low-cost production process for wind power gear shaft |
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| CN202010543854.XA CN111906507B (en) | 2020-06-15 | 2020-06-15 | High-efficiency low-cost production process for wind power gear shaft |
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| CN111906507B true CN111906507B (en) | 2022-06-28 |
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| JP4022705B2 (en) * | 1999-02-18 | 2007-12-19 | トヨタ自動車株式会社 | Quenching method |
| JP3975040B2 (en) * | 1999-12-22 | 2007-09-12 | 大岡技研株式会社 | Gear and gear manufacturing method |
| CN102848159B (en) * | 2011-07-01 | 2016-01-20 | 常州展华机器人有限公司 | A kind of processing method of large-modulus few-tooth Involute gear |
| CN202744601U (en) * | 2012-08-10 | 2013-02-20 | 湖北神力锻造有限责任公司 | Afterheat quenching lifting quenching machine of automobile front axle forged piece |
| CN107234407A (en) * | 2017-08-07 | 2017-10-10 | 江阴市凯华机械制造有限公司 | Driven tooth wheel rim production technology |
| CN109483185A (en) * | 2017-09-13 | 2019-03-19 | 南京美克斯精密机械有限公司 | A kind of processing technology of sprocket wheel |
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2020
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Denomination of invention: High efficiency and low-cost production process for wind power gear shafts Effective date of registration: 20231127 Granted publication date: 20220628 Pledgee: Zhejiang Commercial Bank Co.,Ltd. Jiangyin Branch Pledgor: JIANGYIN KAIHUA MACHINERY MANUFACTURING Co.,Ltd. Registration number: Y2023980067806 |
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