CN1287508C - Method for fine forging of generator magnetic pole - Google Patents
Method for fine forging of generator magnetic pole Download PDFInfo
- Publication number
- CN1287508C CN1287508C CN 200410060886 CN200410060886A CN1287508C CN 1287508 C CN1287508 C CN 1287508C CN 200410060886 CN200410060886 CN 200410060886 CN 200410060886 A CN200410060886 A CN 200410060886A CN 1287508 C CN1287508 C CN 1287508C
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- magnetic pole
- blank
- forging
- diameter
- generator
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Abstract
The present invention relates to a fine forging forming method of a generator magnetic pole, which is characterized by being realized in the following steps: a) raw material baiting: raw material is cut into a blanks, the diameter of the blank is determined according to a formula db=dp-c (dp as the diameter of a magnetic pole boss, db as the blank diameter, c=0 to 20mm), and the axial height h of the blank is determined by equal conditions for the volume of the blank and the magnetic pole; b) closed fine hot-die forging formation: the blank is put into a heating oven, heated to the preset temperature of 1000 to 1200 DEG C, and forged into a forge piece by closed fine hot die forging at one step; c) the trimmings of the forge piece are cut off; d) the forge piece is machined into the generator magnetic pole. The present invention has the characteristics of simple manufacturing technique, and high performance, quality and qualification rate of the generator magnetic pole.
Description
Technical field
The present invention relates to a kind of method of generator magnetic pole precision forging.
Background technology
Magnetic pole is the key of generator, and magnetic pole need guarantee to alleviate quality under the more powerful prerequisite of generator output as far as possible.The pole form complexity, its six utmost point pawl geometric accuracies are strict, do not allow mismatch.Traditional manufacturing process of magnetic pole mainly contains cast form and common forging and molding.Wherein, the generator magnetic pole that casting forming process is produced, defectives such as that interior tissue exists is loose, shrinkage cavity, segregation have reduced the electromagnetic performance of magnetic pole, are difficult to satisfy the performance quality requirement.And the technical process of common forging and molding method manufacturing magnetic pole is: 1). blanking, 2). heating, 3). jumping-up, 4). blocking, 5). finish-forging, 6). trimming, 7). machining, though this method has been improved magnetic pole interior tissue and performance quality greatly, still there are shortcomings such as manufacturing process head, production cost height.And in the common forging and molding, the distortion of blocking and two work steps of finish-forging and type groove be difficult to be coordinated, and are not fully filled or form folding when usually causing finish-forging, so that produce serious forming quality problem and a large amount of wasters.
Summary of the invention
At above-mentioned deficiency, the method for the generator magnetic pole precision forging that the object of the present invention is to provide that a kind of production technology is simple, generator magnetic pole performance quality and product percent of pass is high.
To achieve these goals, technical scheme of the present invention is: the method for generator magnetic pole precision forging is characterized in that realizing as follows: a) raw material blanking: raw material (bar) are cut into blank, according to formula d
b=d
p-c determines blank diameter, and wherein the diameter of magnetic pole boss is d
p, blank diameter is d
b, c=0～20 millimeter, the size of the axial height h of blank equates with the magnetic pole volume that by the blank volume condition determines; B) the proceeding closed fine hot forging is shaped: blank is dropped into be heated to 1000 ℃～1200 ℃ of predetermined temperatures in the heating furnace, adopt the proceeding closed fine hot forging once to forge into forging then; C) forging trimming; D) be machined into generator magnetic pole.
Be 30 seconds～90 seconds the heating time of described blank.
The forging temperature that forging is once forged in described proceeding closed fine hot forging is 1150 ℃～950 ℃, forging time 4 seconds～10 seconds.
Formula d is adopted in raw material blanking of the present invention
b=d
p-c determines blank diameter, and the axial height h size of blank equates with the magnetic pole volume that by the blank volume condition is definite; Reduce raw-material waste, reduced production cost, also improved the forming accuracy and the product percent of pass of magnetic pole simultaneously.The present invention adopts forging and molding of proceeding closed fine hot forging, has improved internal soundness and the electromagnetic performance and the product percent of pass of magnetic pole, has shortened the magnetic pole technological process of production, has simplified production technology, has reduced follow-up machine work.
Description of drawings
Fig. 1 is the generator magnetic pole structure chart
Fig. 2 is that the A of Fig. 1 is to view
Fig. 3 is that Fig. 1 is along B-B line cutaway view
Fig. 4 is the generator magnetic pole blank drawing
Fig. 5 magnetic pole precision forging die structure dwg
Fig. 6 is the upper die mold structural representation
Fig. 7 is the closed die forging structural representation of magnetic pole
Among the figure: 1-stop collar, 2-guide pin bushing, 3-guide pillar, 4-upper bolster, 5-upper padding plate, 6-patrix trim ring, 7-drift, 8-forging, 9-die, 10-counterdie trim ring, 11-lower bolster, 12-push rod, 13-die shoe, 14-blank.
Embodiment
The invention will be further elaborated below in conjunction with accompanying drawing.
The method of generator magnetic pole precision forging, realize as follows:
1) raw material blanking: raw material (bar) are cut into blank, according to formula d
b=d
p-c determines blank diameter, and wherein the diameter of magnetic pole boss is d
p, blank diameter is d
b, c=0～20 millimeter, the axial height h size of blank equates with the magnetic pole volume that by the blank volume condition determines; As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, by the boss diameter d
pBe Φ 52mm, determine blank diameter d
bBe Φ 45mm, wherein c gets 7 millimeters; The center bore d of magnetic pole
1Be Φ 16m, the outside diameter d of magnetic pole
2Be Φ 105mm, the high h of the central boss of magnetic pole
1Be 28m, the height overall h of magnetic pole
2Be 42mm, the arc radius R of magnetic pole groove is 13mm.Can calculate the volume of its magnetic pole according to given pole dimension.Equate with the magnetic pole volume that according to the blank volume can calculate blank height h is 111mm.
2) the proceeding closed fine hot forging is shaped: a) preparation of proceeding closed fine mold heat: the proceeding closed fine mold heat, it comprises patrix 7, counterdie 9, upper bolster 4, upper padding plate 5, patrix trim ring 6, counterdie trim ring 10, lower bolster 11, push rod 12, die shoe 13.Guiding mechanism comprises guide pillar 3, guide pin bushing 2.The two ends of upper bolster 4 are connected by guiding mechanism with the two ends of die shoe 13, patrix is the drift 7 that has six boss, counterdie is the die 9 that has location notch, upper padding plate 5 and upper bolster 4 are connected by bolt, patrix embeds in the upper padding plate 5, the patrix outside is with patrix trim ring 6, and patrix trim ring 6 is fixedlyed connected with upper padding plate 5 by bolt; Lower bolster 11 and die shoe 13 are connected by bolt, counterdie embeds in the lower bolster 11 and compresses, the counterdie outside is with counterdie trim ring 10, counterdie trim ring 10 is by being fixedlyed connected with lower bolster 11 by bolt, have through hole on die 9, lower bolster 11, the die shoe 13, its through hole concentric, push rod 12 is positioned at through hole; Guiding mechanism is made up of stop collar 1, guide pin bushing 2, guide pillar 3, stop collar 1 is fixed on the die shoe 13, when counterdie is pressed into forging with blank, stop collar 1 contacts with upper bolster 4, guide pin bushing 2 is fixed on the upper bolster 4, the top of guide pillar 3 and guide pin bushing 2 are nested, and fixedly connected with die shoe 13 in the bottom of guide pillar 3.
In the proceeding closed fine die forging process of magnetic pole forging, be difficult to make the blank volume just to equate with the volume of closed forging die, should compensation space be set on the utmost point claw portion top of patrix.Also will consider the discharging of utmost point chamber inner sealing air, the normally highly high 3～5mm of the utmost point chamber aspect ratio of its claw has guaranteed the shaping of magnetic pole claw part maximum possible like this.Drift and die will have appropriate gap between push rod and die, and drift and die gap width are got 0.5～1.0mm.Pressing the IT8 precision between push rod and die cooperates.
B) blank is dropped into heating furnace, be 60 seconds heating time, and heating-up temperature is 1200 ℃; Put into the location notch of counterdie then, blank is positioned in the type groove of counterdie, and press ram drives drift and enters counterdie, the magnetic pole blank from middle along around Radial Flow, flow through an annular disc district until being full of six dark and narrow utmost point chambeies, by forging and molding of closed molds by boss; Forging temperature is 1150 ℃-950 ℃, forging time 7 seconds; Behind the forging and molding, patrix leaves counterdie, and the magnetic pole forging that push rod will be stayed in the counterdie ejects.
3) forging trimming: be common process.
4) be machined into magnetic pole; Be common process.
Claims (1)
1. the method for generator magnetic pole precision forging is characterized in that realizing as follows: a) raw material blanking: raw material are cut into blank, according to formula d
b=d
p-c determines blank diameter, wherein, and d
pBe the diameter of magnetic pole boss, d
bBe blank diameter, c=0～20 millimeter, the size of the axial height h of blank equates with the magnetic pole volume that by the blank volume condition determines; B) the proceeding closed fine hot forging is shaped: blank is dropped into be heated to 1000 ℃～1200 ℃ of predetermined temperatures in the heating furnace, be 30 seconds～90 seconds heating time, adopt the proceeding closed fine hot forging once to forge into forging then, forging temperature is 1150 ℃～950 ℃, forging time 4 seconds～10 seconds; C) forging trimming; D) be machined into generator magnetic pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410060886 CN1287508C (en) | 2004-09-21 | 2004-09-21 | Method for fine forging of generator magnetic pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410060886 CN1287508C (en) | 2004-09-21 | 2004-09-21 | Method for fine forging of generator magnetic pole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1588764A CN1588764A (en) | 2005-03-02 |
| CN1287508C true CN1287508C (en) | 2006-11-29 |
Family
ID=34603616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410060886 Expired - Fee Related CN1287508C (en) | 2004-09-21 | 2004-09-21 | Method for fine forging of generator magnetic pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1287508C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411770C (en) * | 2006-09-30 | 2008-08-20 | 武汉理工大学 | Generator magnetic pole precision forging method |
| CN103071978B (en) * | 2013-01-10 | 2015-01-28 | 太仓久信精密模具有限公司 | Warm and cold combined forming process for claw pole of generator |
| CN103170564A (en) * | 2013-01-22 | 2013-06-26 | 佛山市日丰企业有限公司 | Hot forging forming method of integral sub-catchment stick body |
-
2004
- 2004-09-21 CN CN 200410060886 patent/CN1287508C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1588764A (en) | 2005-03-02 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061129 Termination date: 20100921 |