CN105186798A - Production process method for positioning bars for hydroelectric generator stator core - Google Patents
Production process method for positioning bars for hydroelectric generator stator core Download PDFInfo
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- CN105186798A CN105186798A CN201510625819.1A CN201510625819A CN105186798A CN 105186798 A CN105186798 A CN 105186798A CN 201510625819 A CN201510625819 A CN 201510625819A CN 105186798 A CN105186798 A CN 105186798A
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Abstract
The invention provides a production process method for positioning bars for a stator core of a hydroelectric generator, comprising the following steps: putting raw materials into storage, examining the appearances, sizes and chemical components of the raw materials, blanking and cutting the qualified raw materials into single work pieces based on production demands, havingan upper clamping handle fully welded at one end of each work piece through an electric welding machine; and performing annealing treatment, phosphating and saponification treatment, drawing the work pieces, examining the property of products, straightening work piece products, and finally cleaning the surfaces of the straightened work piece products, coating anti-rust oil and packaging. In the production process method, the hydraulic drawing mode is adopted in preparation, and the production process method is high in preparation efficiency, low in processing cost, high in processing precision, good in consistency of work piece dimensions, short in assembling time of machine sets, and mainly applied in production of positioning bars for the stator core of the hydroelectric generator.
Description
Technical field
The present invention relates to generating equipment parts technical field of producing, especially hydroelectric generator stator core positioning bar manufacturing technique method.
Background technology
Positioning bar is requisite parts in generator unit stator, it is high that it makes required precision, it is all generally adopt the mode of machine cut processing to carry out that positioning bar domestic is at present manufactured, machining accuracy often can not well meet the demands, be exactly from external directly import in addition, but its import cost is high, its operating cost is virtually added for enterprise, therefore study one and can ensure production and processing precision, the positioning bar production method that effectively can reduce again its cost of manufacture is necessary.
Past adopts machine cut processing technology to produce positioning bar, and spillage of material is large, and in the course of processing, equipment requirement is high, like " breaking a fly upon a wheel ", and due to the geometrical property of product be profiled, elongated, be easily out of shape not easily clamping, very high to the requirement of cutter, often process a geometric surface will again correct by clamping, change different cutters, working (machining) efficiency is low, and machining deformation amount is large, processing dimension is difficult to ensure consistency, requires high to the technical merit of machine operation workman simultaneously.
Current hydraulic drawbench is applied less in the drawing of shape, mostly be the drawbench applying a kind of chain-type now, hydraulic drawbench compared by chain-type drawbench, drawing speed has superiority, but stationarity is poor by contrast, impulsive force is large, Product Precision is poor, the section bar that machining accuracy is high, is difficult to reach requirement, and the manufacture field especially hydraulic drawbench being applied in generator unit stator positioning bar is quite rare especially.
Summary of the invention
Object of the present invention is exactly for current the problems referred to above existed on positioning bar is manufactured, a kind of employing hydraulic drawing mode is newly provided to make, make efficiency is high, processing cost is low, machining accuracy is high, the consistency of workpiece size is good, the manufacturing technique method of the hydroelectric generator stator core positioning bar that unit built-up time is short.
Concrete scheme of the present invention is: hydroelectric generator stator core positioning bar manufacturing technique method, includes following steps:
A. raw material warehouse-in is carried out outward appearance, size and chemical composition inspection, qualified raw material cut into single workpiece by production requirement blanking, and one end of each workpiece is by clamp holder on electric welding machine full weld;
B. annealing in process: workpiece is discharged successively neat, one row some is stacked to few 5 layers, ensures 6 ~ 10mm gap between every layer by cushion block, and carries out annealing in process with iron wire encircling feeding car type furnace, setting annealing temperature 710 ~ 740 DEG C is also incubated 4 ~ 5 hours, then allows it naturally cool;
C. phosphatization saponification process: the workpiece after annealing is placed in acid solution and removes oxide layer, then the phosphating pond putting into 65 ~ 75 DEG C carries out process 20 minutes, process is carried out 10 minutes in the saponification pond finally putting into 45 ~ 55 DEG C;
D. workpiece drawing: be placed on by workpiece on specific drawbench, installs drawing mould, the drawing length of adjustment drawing mould angle and workpiece, and carry out the 1st drawing, the monolateral surplus of the 1st drawing is 1.4 ~ 1.6mm, described in this step, specific drawbench has support, the bottom of support is provided with fuel tank A, oil pump and control cabinet for power distribution, above support, left and right is parallel is provided with two guide posts, guide post is set with mechanical gripping means, the centre position, one end of mechanical gripping means is connected with a hydraulic pressure draw-bar, the other end of hydraulic pressure draw-bar is connected with oil pump, the other end support relative with mechanical gripping means is equipped with drawing mould, described mechanical gripping means has stop dog of clamper, the bosom of stop dog of clamper is provided with wedge shape jaws, Wedge gripping is equipped with in wedge shape jaws, the right and left of Wedge gripping is arranged with spring reverse motion, this spring reverse motion can make Wedge gripping automatically reset when not drawing clamps, the upper center of stop dog of clamper is provided with bearing, bearing is added is provided with lever, lever can move forward and backward in the holder, the front portion of lever is provided with Compress Spring, the middle part of lever offers mounting hole, the below of mounting hole is provided with stirs cross bar, stir cross bar top to be provided with and to stir montant, the top of stirring montant is stirred through mounting hole and with the mobile front and back of lever, two ends and the stop dog of clamper of stirring cross bar are rotationally connected, the bottom of stirring cross bar is provided with catch bar, and this catch bar can promote Wedge gripping advance clamping,
E. the 2nd drawing: repeat step b, c and d, change drawing mould, the monolateral surplus of this subjob drawing is 1.0 ~ 1.2mm;
F. the 3rd drawing: repeat step b, c and d, change drawing mould, the monolateral surplus of this subjob drawing is 0.6 ~ 0.7mm;
G. test of product performance: grab sample in sample workpiece, take out the sample that is also cut out one section of 200mm thereon, the tensile strength of test samples, yield strength and elongation is required according to OEA.640.288, if mechanical performance is defective, need again to draw by step a ~ f, can next step be carried out if qualified;
H. workpiece product alignment: the work piece cut drawn is become full-length, first utilizes specific distortion coalignment to complete torsion resistance alignment, recycles the glacing flatness alignment that common glacing flatness straightener completes workpiece, meets the associated specifications of positioning bar; Described specific distortion coalignment includes workbench, power distribution cabinet, fuel tank B and plunger displacement pump, the left and right sides of described workbench is provided with two die holders side by side, movable pattern and fixing pattern are housed in two die holders respectively, the rear side of movable pattern is provided with brace table, brace table is vertically provided with hydraulic cylinder, hydraulically extensible bar is vertically equipped with in hydraulic cylinder front end, hydraulically extensible bar front end is hinged with connecting rod, the other end of described connecting rod is fixedly connected with movable pattern, and described movable pattern can around the rotary motion of Pivot Point Center line under the drive of connecting rod; Workbench is also provided with hand-hydraulic changeover valve, and this hand-hydraulic changeover valve one end is connected with plunger displacement pump pipeline, and the other end is connected by pipeline with hydraulic cylinder;
I. the surface of workpiece product good for alignment is cleaned, be coated with antirust oil and pack.
On Wedge gripping described in the present invention with treat that the clamped contact position of drawing workpiece is provided with zigzag strips.
Spring reverse motion described in the present invention includes the pull bar be connected with Wedge gripping, and pull bar is connected with back-moving spring, and the other end of back-moving spring is fixedly connected with stop dog of clamper, and back-moving spring and Wedge gripping are equidirectional oblique layout.
Described in the present invention, the side of the die holder at movable pattern place is provided with dial, the angle that the accurate show events pattern of this dial energy rotates.
The length of car type furnace described in the present invention is at least 4000mm.
The present invention has following beneficial effect:
1, workpiece drawing adopts hydraulic cold drawing process, and stock utilization improves greatly, and equipment operating is simple, and dimensional accuracy is ensured by mould completely, and the simple basic operation of an equipment operating workman GPRS, working (machining) efficiency improves greatly.
2, the cold-drawing process that positioning bar adopts is produced in the present invention, change over the technology pattern processed by machine cut completely, while guarantee properties of product, the every dimensional requirement of product, maximum characteristic is just reduction of difficulty of processing, improves the consistency of operating efficiency and Product Precision, save manpower and materials, decrease the waste of resource.
Accompanying drawing explanation
Fig. 1 is specific drawbench general structure schematic diagram in the present invention;
Fig. 2 be Fig. 1 overlook direction structure schematic diagram;
Fig. 3 is the left apparent direction structural representation of Fig. 1;
Fig. 4 is the mechanical gripping means structural representation in the specific drawbench in the present invention;
Fig. 5 be Fig. 4 overlook direction structure schematic diagram;
Fig. 6 is the left apparent direction structural representation of Fig. 4;
Fig. 7 is cutting structural representation in A-A place in Fig. 6;
Fig. 8 is specific distortion coalignment structural representation in the present invention;
Fig. 9 be Fig. 8 overlook direction structure schematic diagram;
Figure 10 is the left apparent direction structural representation of Fig. 8.
In figure: 1-support, 2-mechanical gripping means, 3-guide post, 4-supporting steel, 5-control cabinet for power distribution, 6-oil pump, 7-fuel tank A, 8-hydraulic pressure draw-bar, 9-drawing mould, 10-lever, 11-Compress Spring, 12-stir montant, 13-stir cross bar, 14-bearing, 15-back-moving spring, 16-pull bar, 17-catch bar, 18-Wedge gripping, 19-treat drawing workpiece, 20-stop dog of clamper, 21-mounting hole, 22-hydraulic cylinder, 23-hydraulically extensible bar, 24-movable pattern, 25-die holder, 26-brace table, 27-workbench, 28-hand-hydraulic changeover valve, 29-fuel tank B, 30-plunger displacement pump, 31-power distribution cabinet, 32-fixing pattern, 33-connecting rod, 34-dial, K direction in figure, F direction is stressed or traffic direction.
Embodiment
See Fig. 1-Figure 10, the present invention is a kind of hydroelectric generator stator core positioning bar manufacturing technique method, includes following steps:
A. raw material warehouse-in is carried out outward appearance, size and chemical composition inspection, qualified raw material cut into single workpiece by production requirement blanking, and one end of each workpiece is by clamp holder on electric welding machine full weld;
B. annealing in process: workpiece is discharged successively neat, one row some is stacked to few 5 layers, 6 ~ 10mm gap is ensured by cushion block between every layer, preferred 8mm, and carry out annealing in process with iron wire encircling feeding car type furnace, setting annealing temperature 710 ~ 740 DEG C is also incubated 4 ~ 5 hours, preferably 710 DEG C and be incubated 5 hours, then allows it naturally cool;
C. phosphatization saponification process: the workpiece after annealing is placed in acid solution and removes oxide layer, then the phosphating pond putting into 65 ~ 75 DEG C (preferably 70 DEG C) carries out process 20 minutes, process is carried out 10 minutes in the saponification pond finally putting into 45 ~ 55 DEG C (preferably 50 DEG C);
D. workpiece drawing: be placed on by workpiece on specific drawbench, installs drawing mould 9, the drawing length of adjustment drawing mould angle and workpiece, and carry out the 1st drawing, the monolateral surplus of the 1st drawing is 1.4 ~ 1.6mm, described in this step, specific drawbench has support 1, the bottom of support is provided with fuel tank A7, oil pump 6 and control cabinet for power distribution 5, above support, left and right is parallel is provided with two guide posts 3, guide post is set with mechanical gripping means 2, the centre position, one end of mechanical gripping means is connected with a hydraulic pressure draw-bar 8, the other end of hydraulic pressure draw-bar is connected with oil pump, the other end support relative with mechanical gripping means is equipped with drawing mould 9, described mechanical gripping means has stop dog of clamper 20, the bosom of stop dog of clamper is provided with wedge shape jaws, Wedge gripping 18 is equipped with in wedge shape jaws, the right and left of Wedge gripping is arranged with spring reverse motion, this spring reverse motion can make Wedge gripping automatically reset when not drawing clamps, the upper center of stop dog of clamper is provided with bearing 14, bearing is added is provided with lever 10, lever can move forward and backward in the holder, the front portion of lever is provided with Compress Spring 11, the middle part of lever offers mounting hole 21, the below of mounting hole is provided with stirs cross bar 13, stir cross bar top to be provided with and to stir montant 12, the top of stirring montant is stirred through mounting hole and with the mobile front and back of lever, two ends and the stop dog of clamper of stirring cross bar are rotationally connected, the bottom of stirring cross bar is provided with catch bar 17, and this catch bar can promote Wedge gripping advance clamping (specifically see Fig. 1-Fig. 7),
E. the 2nd drawing: repeat step b, c and d, change drawing mould, the monolateral surplus of this subjob drawing is 1.0 ~ 1.2mm;
F. the 3rd drawing: repeat step b, c and d, change drawing mould, the monolateral surplus of this subjob drawing is 0.6 ~ 0.7mm;
G. test of product performance: grab sample in sample workpiece, take out the sample that is also cut out one section of 200mm thereon, the tensile strength of test samples, yield strength and elongation is required according to OEA.640.288, if mechanical performance is defective, need again to draw by step a ~ f, can next step be carried out if qualified;
H. workpiece product alignment: the work piece cut drawn is become full-length, first utilizes specific distortion coalignment to complete torsion resistance alignment, recycles the glacing flatness alignment that common glacing flatness straightener completes workpiece, meets the associated specifications of positioning bar, described specific distortion coalignment includes workbench 27, power distribution cabinet 31, fuel tank B29 and plunger displacement pump 30, the left and right sides of described workbench is provided with two die holders 25 side by side, movable pattern 24 and fixing pattern 32 are housed in two die holders respectively, the rear side of movable pattern is provided with brace table 26, brace table is vertically provided with hydraulic cylinder 22, hydraulically extensible bar 23 is vertically equipped with in hydraulic cylinder front end, hydraulically extensible bar front end is hinged with connecting rod 33, the other end of described connecting rod is fixedly connected with movable pattern, and described movable pattern can around the rotary motion of Pivot Point Center line under the drive of connecting rod, workbench is also provided with hand-hydraulic changeover valve 28, and this hand-hydraulic changeover valve one end is connected with plunger displacement pump 30 pipeline, and the other end is connected (specifically see Fig. 8-Figure 10) by pipeline with hydraulic cylinder 22,
I. the surface of workpiece product good for alignment is cleaned, be coated with antirust oil and pack.
On Wedge gripping 18 described in the present embodiment with treat that the clamped contact position of drawing workpiece 19 is provided with zigzag strips.
Spring reverse motion described in the present embodiment includes the pull bar 16 be connected with Wedge gripping, pull bar is connected with back-moving spring 15, and the other end of back-moving spring is fixedly connected with stop dog of clamper 20, and back-moving spring and Wedge gripping are equidirectional oblique layout.
Described in the present embodiment, the side of the die holder 25 at movable pattern 24 place is provided with dial 34, the angle that the accurate show events pattern of this dial energy rotates.
The length of car type furnace described in the present embodiment is at least 4000mm.
In the present invention, workpiece drawing adopts hydraulic cold drawing process, and stock utilization improves greatly, and equipment operating is simple, and dimensional accuracy is ensured by mould completely, and the simple basic operation of an equipment operating workman GPRS, working (machining) efficiency improves greatly.
The cold-drawing process that positioning bar adopts is produced in the present invention, change over the technology pattern processed by machine cut completely, while guarantee properties of product, the every dimensional requirement of product, maximum characteristic is just reduction of difficulty of processing, improves the consistency of operating efficiency and Product Precision, save manpower and materials, decrease the waste of resource.
Claims (5)
1. hydroelectric generator stator core positioning bar manufacturing technique method, is characterized in that: include following steps:
A. raw material warehouse-in is carried out outward appearance, size and chemical composition inspection, qualified raw material cut into single workpiece by production requirement blanking, and one end of each workpiece is by clamp holder on electric welding machine full weld;
B. annealing in process: workpiece is discharged successively neat, one row some is stacked to few 5 layers, ensures 6 ~ 10mm gap between every layer by cushion block, and carries out annealing in process with iron wire encircling feeding car type furnace, setting annealing temperature 710 ~ 740 DEG C is also incubated 4 ~ 5 hours, then allows it naturally cool;
C. phosphatization saponification process: the workpiece after annealing is placed in acid solution and removes oxide layer, then the phosphating pond putting into 65 ~ 75 DEG C carries out process 20 minutes, process is carried out 10 minutes in the saponification pond finally putting into 45 ~ 55 DEG C;
D. workpiece drawing: be placed on by workpiece on specific drawbench, installs drawing mould, the drawing length of adjustment drawing mould angle and workpiece, and carry out the 1st drawing, the monolateral surplus of the 1st drawing is 1.4 ~ 1.6mm, described in this step, specific drawbench has support, the bottom of support is provided with fuel tank A, oil pump and control cabinet for power distribution, above support, left and right is parallel is provided with two guide posts, guide post is set with mechanical gripping means, the centre position, one end of mechanical gripping means is connected with a hydraulic pressure draw-bar, the other end of hydraulic pressure draw-bar is connected with oil pump, the other end support relative with mechanical gripping means is equipped with drawing mould, described mechanical gripping means has stop dog of clamper, the bosom of stop dog of clamper is provided with wedge shape jaws, Wedge gripping is equipped with in wedge shape jaws, the right and left of Wedge gripping is arranged with spring reverse motion, this spring reverse motion can make Wedge gripping automatically reset when not drawing clamps, the upper center of stop dog of clamper is provided with bearing, bearing is added is provided with lever, lever can move forward and backward in the holder, the front portion of lever is provided with Compress Spring, the middle part of lever offers mounting hole, the below of mounting hole is provided with stirs cross bar, stir cross bar top to be provided with and to stir montant, the top of stirring montant is stirred through mounting hole and with the mobile front and back of lever, two ends and the stop dog of clamper of stirring cross bar are rotationally connected, the bottom of stirring cross bar is provided with catch bar, and this catch bar can promote Wedge gripping advance clamping,
E. the 2nd drawing: repeat step b, c and d, change drawing mould, the monolateral surplus of this subjob drawing is 1.0 ~ 1.2mm;
F. the 3rd drawing: repeat step b, c and d, change drawing mould, the monolateral surplus of this subjob drawing is 0.6 ~ 0.7mm;
G. test of product performance: grab sample in sample workpiece, take out the sample that is also cut out one section of 200mm thereon, the tensile strength of test samples, yield strength and elongation is required according to OEA.640.288, if mechanical performance is defective, need again to draw by step a ~ f, can next step be carried out if qualified;
H. workpiece product alignment: the work piece cut drawn is become full-length, first utilizes specific distortion coalignment to complete torsion resistance alignment, recycles the glacing flatness alignment that common glacing flatness straightener completes workpiece, meets the associated specifications of positioning bar; Described specific distortion coalignment includes workbench, power distribution cabinet, fuel tank B and plunger displacement pump, the left and right sides of described workbench is provided with two die holders side by side, movable pattern and fixing pattern are housed in two die holders respectively, the rear side of movable pattern is provided with brace table, brace table is vertically provided with hydraulic cylinder, hydraulically extensible bar is vertically equipped with in hydraulic cylinder front end, hydraulically extensible bar front end is hinged with connecting rod, the other end of described connecting rod is fixedly connected with movable pattern, and described movable pattern can around the rotary motion of Pivot Point Center line under the drive of connecting rod; Workbench is also provided with hand-hydraulic changeover valve, and this hand-hydraulic changeover valve one end is connected with plunger displacement pump pipeline, and the other end is connected by pipeline with hydraulic cylinder;
I. the surface of workpiece product good for alignment is cleaned, be coated with antirust oil and pack.
2. hydroelectric generator stator core positioning bar manufacturing technique method according to claim 1, is characterized in that: on described Wedge gripping with treat that the clamped contact position of drawing workpiece is provided with zigzag strips.
3. hydroelectric generator stator core positioning bar manufacturing technique method according to claim 1, it is characterized in that: described spring reverse motion includes the pull bar be connected with Wedge gripping, pull bar is connected with back-moving spring, the other end of back-moving spring is fixedly connected with stop dog of clamper, and back-moving spring and Wedge gripping are equidirectional oblique layout.
4. hydroelectric generator stator core positioning bar manufacturing technique method according to claim 1, is characterized in that: the side of the die holder at described movable pattern place is provided with dial, the angle that the accurate show events pattern of this dial energy rotates.
5. hydroelectric generator stator core positioning bar manufacturing technique method according to claim 1, is characterized in that: the length of described car type furnace is at least 4000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625819.1A CN105186798B (en) | 2015-09-28 | 2015-09-28 | Hydroelectric generator stator core positioning bar manufacturing technique method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625819.1A CN105186798B (en) | 2015-09-28 | 2015-09-28 | Hydroelectric generator stator core positioning bar manufacturing technique method |
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| CN105186798A true CN105186798A (en) | 2015-12-23 |
| CN105186798B CN105186798B (en) | 2017-07-11 |
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| CN2749594Y (en) * | 2004-11-29 | 2006-01-04 | 方大集团股份有限公司 | Glass tube drawing machine used for metal multiple-unit tube processing |
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| CN101854096A (en) * | 2009-03-31 | 2010-10-06 | 上海电气集团上海电机厂有限公司 | Method for manufacturing support bar for positioning stator core of large-size asynchronous motor |
| CN201625670U (en) * | 2010-04-14 | 2010-11-10 | 梅河口市兴业精密钢管有限公司 | Precise pipe cold-drawing machine with retained mandrel |
| CN102728664A (en) * | 2012-07-03 | 2012-10-17 | 辽宁忠旺集团有限公司 | Hydraulic stretching machine |
| CN102873512A (en) * | 2012-09-29 | 2013-01-16 | 攀钢集团成都钢钒有限公司 | Manufacture method of large-caliber medium-and-thick-wall seamless steel tube for nuclear power plant |
-
2015
- 2015-09-28 CN CN201510625819.1A patent/CN105186798B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2749594Y (en) * | 2004-11-29 | 2006-01-04 | 方大集团股份有限公司 | Glass tube drawing machine used for metal multiple-unit tube processing |
| KR20100007106A (en) * | 2008-07-11 | 2010-01-22 | 장소현 | Appratus for charging a core bar in pipe and the method of operating the same |
| CN101854096A (en) * | 2009-03-31 | 2010-10-06 | 上海电气集团上海电机厂有限公司 | Method for manufacturing support bar for positioning stator core of large-size asynchronous motor |
| CN201625670U (en) * | 2010-04-14 | 2010-11-10 | 梅河口市兴业精密钢管有限公司 | Precise pipe cold-drawing machine with retained mandrel |
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| CN102873512A (en) * | 2012-09-29 | 2013-01-16 | 攀钢集团成都钢钒有限公司 | Manufacture method of large-caliber medium-and-thick-wall seamless steel tube for nuclear power plant |
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