CN102581549A - Process for fabricating wind-driven generator base - Google Patents

Process for fabricating wind-driven generator base Download PDF

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Publication number
CN102581549A
CN102581549A CN2012100759963A CN201210075996A CN102581549A CN 102581549 A CN102581549 A CN 102581549A CN 2012100759963 A CN2012100759963 A CN 2012100759963A CN 201210075996 A CN201210075996 A CN 201210075996A CN 102581549 A CN102581549 A CN 102581549A
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support
endoporus
plane
boring
cutting
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CN2012100759963A
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Chinese (zh)
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CN102581549B (en
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周琪生
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无锡圣贝尔机电有限公司
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Publication of CN102581549A publication Critical patent/CN102581549A/en
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Abstract

The invention relates to a mechanical process for fabricating a wind-driven generator base, belonging to the technical field of mechanical process. The fabrication process mainly comprises the steps of milling a footing; roughly boring internal step-shaped holes of the base, each step and the planes of two ends; finely boring internal holes of the base as well as each step and the planes of two ends; after the processing is finished, releasing tightening screws and clamp screws; and hoisting the base down onto a wooden frame. According to the fabrication process provided by the invention, the planes of two ends and each internal step-shaped hole are mechanically processed in a state of once clamping, thus the axiality of the internal step-shaped holes at each part on the base can be guaranteed, the processing time is reduced, the precision requirement in base design is met.

Description

The processing technology of aerogenerator machine base
Technical field
The present invention relates to a kind of mechanical processing technique of aerogenerator machine base, belong to technical field of machining.
Background technology
The machining of aerogenerator machine base generally adopts vertical lathe or floor-type milling & boring machine to divide the secondary clamping to carry out machining at present.Because aerogenerator machine base is with behind 6-20mmQ235 or the Q 345C roll of steel plate circle, the two ends round flange of burn-oning is welded into structural member, and whole rigidity is relatively poor, easy deformation during clamping (workpiece is bigger: more than Φ 1000mm * 1300mm).Therefore when machining, there are working (machining) efficiency low (need more than 24 hours every process time), the poor problems such as (about axiality Φ 0.10mm, cylindricity Φ 1000mm have about 0.15mm) of machining accuracy, do not reach the support designing requirement.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point; A kind of processing technology of aerogenerator machine base is provided; Adopt the state that is machined in a clamping of both ends of the surface plane and each step-like endoporus to accomplish down, guaranteed the axiality of each step-like endoporus in position of support; Shortened process time; Reached the required precision of support design.
According to technical scheme provided by the invention, the processing technology of aerogenerator machine base adopts following processing step:
One, mills the footing operation
1, support: behind 6-20mmQ235 or Q 345C roll of steel plate circle, the two ends round flange of burn-oning is welded into support;
2, weldering technique block: 4 technique block of weldering on an end end face plane of support; Technique block forms for the 20mmQ235 steel plate system of cutting;
3, line: the support that will weld technique block lies in a horizontal plane on the face plate, respectively fills up a secondary adjustment cushion block under 4 footing of support, and adjustment adjustment cushion block makes the support axis parallel in face plate, finds out the center of endoporus; Draw the support center line in the support both sides; Mark the high processing line in support center 4 footing sides;
4, clamping: on the rotary table of floor-type milling & boring machine, place 4 adjustment cushion blocks, support is lain in a horizontal plane on the adjustment cushion block, the main spindle box of the end face of technique block towards floor-type milling & boring machine arranged; Adjustment adjustment cushion block is parallel in the table top 0.10mm of rotary table the center line of support both sides, and the adjustment rotary table makes the inner hole centreline of support and floor-type milling & boring machine spindle centerline coaxial; The locking rotary table;
5, mill datum level: rough mill: with Φ 200mm, 75 ° of facing cutters, 350-400 commentaries on classics/min mills processing to 4 technique block; Feeding speed 50-60mm/min; Scrap rate 2-2.5mm;
6, mill datum level: finish-milling: with Φ 200mm, 75 ° of facing cutters, 600 commentaries on classics/min, feeding speed 96mm/min, scrap rate 0.3mm;
7, secondary clamping: the support that will mill technique block vertically is placed on the rotary table, technique block contact work top; The plane of support footing compresses support with pressing plate towards main spindle box;
8, adjustment: rotate rotary table, make the support foot plane parallel, the locking rotary table with the X axle;
9, mill foot plane:, rough mill with Φ 200mm, 75 ° of facing cutters: 350-400 commentaries on classics/min, blade YT5 mills processing to the support foot plane; Feeding speed 50-60mm/min; Scrap rate 2-2.5mm; Finish-milling: 600 commentaries on classics/min, feeding speed 96mm/min, scrap rate 0.3mm; Milling foot plane mills and marks the high processing line in support center to the footing side;
10, remove support, remove technique block with Φ 150 angle emery wheels;
Two, the step-like endoporus of heavy boring support, each step and both ends of the surface plane
1, lifting: support is lain in a horizontal plane on the special-purpose boring anchor clamps of T90120 digital display motor cabinet, and endoporus is towards the boring axle;
2, adjustment: the position with the adjustment of the screw on boring anchor clamps support two ends endoporus horizontal direction makes the chipping allowance of horizontal direction consistent;
3, processing: machining is carried out on both ends of the surface plane and endoporus, each step by the roughing artwork; During the cutting end facial plane: use blade cut, cutting end facial plane: linear velocity 94m/min; Feeding speed 0.25mm/ changes; Cutting endoporus and each step: linear velocity 201m/min, feeding speed 0.25mm/ changes; Single face cutting output 3-5mm cuts cooling with saponification liquor;
4, eliminate cutting stress naturally: the support that roughing is good was placed on the yoke 3-7 days, naturally the elimination cutting stress naturally;
Three, half right boring support endoporus, each step and both ends of the surface plane
1, lifting: support is lain in a horizontal plane on the special-purpose boring anchor clamps of T90120 digital display motor cabinet lathe, endoporus is towards the boring axle;
2, adjustment: adorn dial gauge on the boring axle, with support two ends, the screw school endoporus on the anchor clamps, axiality is less than 0.1mm;
3, processing: both ends of the surface plane and endoporus and each step are processed by the requirement of half right boring artwork; Use blade cut, cutting end facial plane: linear velocity 94m/min; Feeding speed 0.25mm/ changes; Cutting endoporus and each step: linear velocity 201m/min, feeding speed 0.25mm/ changes; Single face cutting output 1.2-1.5 millimeter; Cut cooling with saponification liquor;
Four, right boring support endoporus, each step and both ends of the surface plane
1, fixing: the support after the semifinishing is in the semifloating state;
2, processing: both ends of the surface plane and endoporus and each step are carried out machining by the requirement of right boring artwork; Use blade cut, cutting end facial plane: linear velocity 150m/min, feeding speed 0.1-0.12/ changes; Boring endoporus and each step: linear velocity 220m/min, feeding speed 0.1-0.12/ changes; Single face cutting output 0.3-0.4mm cools off with saponification liquor;
3, completion of processing is unclamped screw and plate screw, hangs lower support and is placed on and is finished product on the yoke.
The present invention compares with technical indicator and has the following advantages:
1, because the state that is machined in a clamping of both ends of the surface plane and endoporus and each step is accomplished down, guaranteed the axiality of each stepped hole of support: diameter of phi 1000mm is less than 0.03mm (test of three coordinates).
2, owing to adopted higher linear velocity, roughness can reach Ra1.6 (roughmeter test).
3, adopt semifloating clamping method during right boring, cylindricity Φ 1000mm is less than 0.04mm (survey of three coordinates).
4, straight length 1000mm tapering is less than 0.03mm.
5, owing to adopted reasonable technology route and technological equipment, make process time by original shortening to about 7 hours more than 24 hours.
Annotate: the technical indicator of aerogenerator machine base is: 1000mm is less than Φ 0.05mm for axiality straight-line dimension diameter of phi, and cylindricity Φ 1000 is less than 0.06mm, and straight length 1000mm tapering is less than 0.05mm, roughness Ra3.2.
The specific embodiment
Following the present invention will combine embodiment to further describe:
Embodiment one
The processing technology of aerogenerator machine base of the present invention adopts following processing step:
One, mills the footing operation
1, support: 1.5MW water-cooled aerogenerator machine base (cylindrical structure), behind 6-20mmQ235 or Q 345C roll of steel plate circle, the two ends round flange of burn-oning is welded into the structural member support; Blank dimension: 1700mm (length) * 920mm (wide) * 1080mm (height); The blank dimension of endoporus: Φ 790mm, the blank center is high: 456mm;
Water-cooled support endoporus is the cylinder that steel plate is rolled into, the two ends round flange of burn-oning.The installation principle of wind-driven generator is: the end cap of generator is installed at the support two ends, and motor stator is installed in the middle part, hole within it, afterbody is installed deep bead and cooling fan.Because each parts diameter dimension of being installed is all inequality,, be processed into step-like endoporus according to the diameter dimension and the installation site of each parts so support adds man-hour.
2, weldering technique block: the technique block of 4 30mm * 30mm * 20mm of weldering on an end end face plane of support; Technique block is that the 20mm Q235 steel plate system of cutting forms;
3, line: the support that will weld technique block lies in a horizontal plane on the face plate, respectively fills up a secondary adjustment cushion block under 4 footing of support, and adjustment adjustment cushion block makes the support axis parallel in face plate, finds out the center of endoporus; Draw the support center line in the support both sides; Mark the high processing line in support center 4 footing sides.
4, clamping: on the rotary table of TX6213 digital display floor-type milling & boring machine, place 4 adjustment cushion blocks, support is lain in a horizontal plane on the adjustment cushion block, the main spindle box of the end face of technique block towards the TX6213AF floor-type milling & boring machine arranged; Adjustment adjustment cushion block is parallel in the table top 0.10mm of rotary table the center line of support both sides, is pressed on the rotary table with four pin of pressing plate with support; The adjustment rotary table makes the inner hole centreline of support and floor-type milling & boring machine spindle centerline coaxial; The locking rotary table;
5, mill datum level:, rough mill with Φ 200mm, 75 ° of facing cutters: 350-400 rev/min, blade YT5 mills processing to 4 technique block; Feeding speed 50-60mm/min; Scrap rate 2-2.5mm;
6, finish-milling: with Φ 200mm, 75 ° of facing cutters, 600 commentaries on classics/min, feeding speed 96mm/min, scrap rate 0.3mm.
7, secondary clamping: the support that will mill technique block vertically is placed on the rotary table, technique block contact rotary table face; The plane of support footing is worn 2 housing pins towards main spindle box at the support endoporus, and an end is fixed on the rotary table, and the other end compresses support with nut, pressing plate;
8, adjustment: rotate rotary table, make the support foot plane parallel, the locking rotary table with the X axle;
9, with Φ 200mm, 75 ° of facing cutters, rough mill: 350-400 rev/min, blade YT5 mills processing to the support foot plane; Feeding speed 50-60mm/min; Scrap rate 2-2.5mm; Finish-milling: 600 commentaries on classics/min, feeding speed 96mm/min, scrap rate 0.3mm; Milling foot plane mills and mark the high processing line in support center to the footing side: the center is high: 450 -0.50 0Mm;
10, remove support, remove technique block with Φ 150 angle emery wheels;
Two, heavy boring support endoporus, each step and both ends of the surface plane
1, lifting: support is lain in a horizontal plane on the special-purpose boring anchor clamps of T90120 digital display motor cabinet lathe, endoporus is towards the boring axle;
2, adjustment: the position with the adjustment of the screw on special-purpose boring anchor clamps support two ends endoporus horizontal direction makes the chipping allowance of horizontal direction consistent; Compress the support footing with pressing plate.
3, processing: use dedicated tool, both ends of the surface plane and endoporus and each step are carried out machining by the roughing artwork; Blade is with YBC251 SCMT20404 (homemade blade), during cutting planar end surface plane: linear velocity 94m/min; Feeding speed 0.25mm/ changes; Cutting endoporus: linear velocity 201m/min, feeding speed 0.25mm/ changes; Single face cutting output 3-5mm cuts cooling with saponification liquor;
4, eliminate cutting stress naturally: the support that roughing is good was placed on the yoke 3-7 days, naturally the elimination cutting stress naturally;
The heavy boring size:
A. length: 1682mm
B. inner bore of step: Φ 810mm * 281mm first step endoporus
Φ 800mm * 1038mm second step endoporus
Φ 790mm * 60mm the 3rd inner bore of step, blank is not processed
Φ 810mm * 303mm the 4th inner bore of step
Three, half right boring support endoporus, each step and both ends of the surface plane
1, lifting: support is lain in a horizontal plane on the special-purpose boring anchor clamps of T90120 digital display motor cabinet, and endoporus is towards the boring axle;
2, adjustment: adorn dial gauge on the boring axle, with support two ends, the screw school endoporus on the special fixture, axiality compresses support footing with the tight back of 4 horizontal clamp screw silk ribbons with plate screw less than 0.1mm;
3, processing: by the requirement of half right boring artwork both ends of the surface plane and endoporus and each step are carried out machining with dedicated tool; Blade is with YBC251 SCMT20404 (homemade blade), during the cutting end face: linear velocity 94m/min; Feeding speed 0.25mm/ changes; Cutting endoporus: linear velocity 201m/min, feeding speed 0.25mm/ changes; Single face cutting output 1.2-1.5mm; Cut cooling with saponification liquor;
Half right boring size:
Four, right boring support endoporus, each step and both ends of the surface plane
1, fixing: the support after the semifinishing, unclamp plate screw, screw can not be loose; With the torque spanner 1-1.2kg plate screw of screwing again, also can be with feel: motionless with hand rotary nut to revolving, get final product with interior with 180 ° of spanner nuttings, make support be in the semifloating state;
2, processing: by the requirement of right boring artwork both ends of the surface plane, endoporus and each step are carried out machining with dedicated tool; Blade is with TNMG 16048 FNRCP25 (import blade: Ken Na or Sandvik); Cutting end facial plane: linear velocity 150m/min, feeding speed 0.1-0.12/ changes; Boring endoporus and each step: linear velocity 220m/min, feeding speed 0.1-0.12/ changes; Single face cutting output 0.3-0.4mm cools off with saponification liquor;
The right boring size:
3, completion of processing is unclamped screw and plate screw, hangs lower support and is placed on the yoke.
Embodiment two
Adopt the processing step of the processing technology of water-cooled aerogenerator machine base described in the embodiment one, can process the air-cooled aerogenerator machine base of 3MW;
The air-cooled aerogenerator machine base of 3MW is to be welded into box-structure with 20mm-50mm Q235 or Q 345C steel plate; Box-structure inside is made up of each dividing plate, is cavity between the dividing plate.Mounted component is identical with water cooling base on each dividing plate endoporus of its inner chamber.Be processed to form hole dimension in each dividing plate of inner chamber various according to the diameter dimension of each parts and installation site.
1, blank shape size: 2120mm (length) * 1300mm (wide) * 1285mm (height)
The high size in blank center: 638mm
2, the blank dimension of each dividing plate endoporus in the square chest:
First dividing plate endoporus Φ 1170mm * 40mm
Second partition endoporus Φ 1160mm * 16mm
The 3rd dividing plate endoporus Φ 1145mm * 50mm
The 4th dividing plate endoporus Φ 1148mm * 30mm
The 5th dividing plate endoporus Φ 1150mm * 50mm
The 6th dividing plate endoporus Φ 1160mm * 16mm
The 7th dividing plate endoporus Φ 1170mm * 40mm
3, mill foot plane to center height: 630-0.20-080mm
4, the inner bore of step size of each dividing plate of heavy boring:
5, the inner bore of step size of half each dividing plate of right boring:
6, the inner bore of step size of each dividing plate of right boring:
Embodiment three
Adopt the processing step of the processing technology of water-cooled aerogenerator machine base described in the embodiment one, behind 6-20mmQ235 or Q 345C roll of steel plate circle, the two ends round flange of burn-oning is welded into the 2MW water-cooled aerogenerator machine base of cylindrical structure; Diameter dimension and installation site according to each parts process 2MW water-cooled aerogenerator machine base.
1, appearance and size: long 1650mm * wide 1250mm * high 1345mm
2, endoporus blank dimension: Φ 840mm
3, the high size in blank center: 505mm
4, mill the high size in foot plane to center: 500 0 -0.5Mm
5, heavy boring size:
6, half right boring size:
7, right boring size:

Claims (3)

1. the processing technology of an aerogenerator machine base is characterized in that: adopt following processing step:
One, mills the footing operation
(1), support: behind 6-20mmQ235 or Q345C roll of steel plate circle, the two ends round flange of burn-oning is welded into support;
(2), weldering technique block: in 4 technique block of end end face weldering of support;
(3), line: the support that will weld technique block lies in a horizontal plane on the face plate, respectively fills up a secondary adjustment cushion block under 4 footing of support, and adjustment adjustment cushion block makes the support axis parallel in face plate, finds out the center of endoporus; Draw the support center line in the support both sides; Mark the high processing line in support center 4 footing sides;
(4), clamping: on the rotary table of floor-type milling & boring machine, place 4 adjustment cushion blocks, support is lain in a horizontal plane on the adjustment cushion block, the main spindle box of the end face of technique block towards floor-type milling & boring machine arranged; Adjustment adjustment cushion block is parallel in the table top 0.10mm of rotary table the center line of support both sides, and the inner hole centreline of support and floor-type milling & boring machine spindle centerline are coaxial; The locking rotary table;
(5), mill datum level: rough mill: with Φ 200mm, 75 ° of facing cutters, facing cutter milling speed: 350-400 commentaries on classics/min, 4 technique block are milled processing; Feeding speed: 50-60mm/min; Scrap rate: 2-2.5mm;
(6), mill datum level: finish-milling: with Φ 200mm, 75 ° of facing cutters, facing cutter milling speed: 600 commentaries on classics/min, feeding speed: 96mm/min, scrap rate: 0.3mm;
(7), secondary clamping: the support that will mill technique block vertically is placed on the rotary table, technique block contact rotary table face; The plane of support footing compresses support with pressing plate towards main spindle box;
(8), adjustment: rotate rotary table, make the support foot plane parallel, the locking rotary table with the X axle;
(9), mill foot plane: with Φ 200mm, 75 ° of facing cutters, facing cutter milling speed when rough milling: 350-400 commentaries on classics/min, blade YT5 mills processing to the support foot plane; Feeding speed: 50-60mm/min; Scrap rate: 2-2.5mm; Facing cutter milling speed during finish-milling: 600 commentaries on classics/min, feeding speed: 96mm/min, scrap rate: 0.3mm; Milling foot plane mills and marks the high processing line in support center to the footing side;
(10), remove support, with Φ 150 angle emery wheels removal technique block;
Two, the step-like endoporus of heavy boring support, each step and both ends of the surface plane
(1), lifting: support is lain in a horizontal plane on the special-purpose boring anchor clamps of T90120 digital display motor cabinet, and endoporus is towards the boring axle;
(2), adjustment: the position with the adjustment of the screw on boring anchor clamps support two ends endoporus horizontal direction makes the chipping allowance of horizontal direction consistent;
(3), processing: machining is carried out on both ends of the surface plane and endoporus, each step by the roughing artwork; During the cutting end facial plane: use blade cut, cutting end facial plane: linear velocity 94m/min; Feeding speed 0.25mm/ changes; Cutting endoporus and each step: linear velocity 201m/min, feeding speed 0.25mm/ changes; Single face cutting output 3-5mm cuts cooling with saponification liquor;
(4), naturally eliminate cutting stress: the support that roughing is good was placed on the yoke 3-7 days, naturally the elimination cutting stress naturally;
Three, half right boring support endoporus, each step and both ends of the surface plane
(1), lifting: support is lain in a horizontal plane on the special-purpose boring anchor clamps of T90120 digital display motor cabinet, and endoporus is towards the boring axle;
(2), adjustment: adorn dial gauge on the boring axle, with support two ends, the screw school endoporus on the anchor clamps, axiality is less than 0.1mm;
(3), processing: both ends of the surface plane and endoporus and each step are processed by the requirement of half right boring artwork; Use blade cut, cutting end facial plane: linear velocity 94m/min; Feeding speed 0.25mm/ changes; Cutting endoporus and each step: linear velocity 201m/min, feeding speed 0.25mm/ changes; Single face cutting output 1.2-1.5mm; Cut cooling with saponification liquor;
Four, right boring support endoporus, each step and both ends of the surface plane
(1), fixing: the support after the semifinishing is in the semifloating state;
(2), processing: both ends of the surface plane and endoporus and each step are carried out machining by the requirement of right boring artwork; Use blade cut, cutting end facial plane: linear velocity 150m/min, feeding speed 0.1-0.12/ changes; Boring endoporus and each step: linear velocity 220m/min, feeding speed 0.1-0.12/ changes; Single face cutting output 0.3-0.4mm cools off with saponification liquor;
(3), completion of processing, unclamp screw and plate screw, hang lower support and be placed on and be finished product on the yoke.
2. the processing technology of aerogenerator machine base as claimed in claim 1 is characterized in that: said technique block forms for the 20mmQ235 steel plate system of cutting.
3. the processing technology of aerogenerator machine base as claimed in claim 1 is characterized in that: said
The axiality diameter of phi 1000mm of aerogenerator machine base is less than Φ 0.05mm, and cylindricity Φ 1000mm is less than 0.06mm, and straight length 1000mm tapering is less than 0.05mm, roughness Ra3.2.
CN201210075996.3A 2012-03-21 2012-03-21 Process for fabricating wind-driven generator base CN102581549B (en)

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