CN100484741C - Method for manufacturing strengthening ring for commutator - Google Patents
Method for manufacturing strengthening ring for commutator Download PDFInfo
- Publication number
- CN100484741C CN100484741C CNB2005100232103A CN200510023210A CN100484741C CN 100484741 C CN100484741 C CN 100484741C CN B2005100232103 A CNB2005100232103 A CN B2005100232103A CN 200510023210 A CN200510023210 A CN 200510023210A CN 100484741 C CN100484741 C CN 100484741C
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- Prior art keywords
- alkali
- mother liquor
- resin
- reinforcing ring
- commutator
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- Manufacture Of Motors, Generators (AREA)
Abstract
The present invention discloses a method for making reinforcing ring for commutator. It is characterized by including the following steps: a. using F46 epoxy resin and 504 solidifying agent according to weight ratio of 1:0.7-0.8 to prepare resin mother liquor; b. soaking alkali-free organdy in the resin mother liquor; c. making the alkali-free organdy impregnated with resin mother liquor be winded round steel rod, baking for 4-8 hr. in baking oven at 180-240 deg.C; d. taking the dried steel rod out from baking oven, cooling, smoothening external surface, taking out the hollow pipe formed from alkali-free organdy and solidified resin from external surface of steel rod; and e. cutting said hollow pipe to obtain reinforcing ring bland, deburring, further baking for 6-8 hr. at 200-250 deg.C in baing oven so as to can obtain the invented product.
Description
Technical field
The present invention relates to the manufacture method of a kind of engine commutator with reinforcing ring.
Background technology
Commutator is a critical component of making motor, and reinforcing ring is the important component part of commutator, and the quality of commutator is played a decisive role.
Do not have reinforcing ring on the early stage commutator, formed alternately by commutator segment and mica sheet, its bulk strength is relatively poor, easy deformation, and the scrappage height is difficult to bear the huge centrifugal force that is produced, and can not satisfy user's requirement.For strengthening its intensity, to satisfy motor in high speed, requirement under the hot operation, reduce that brush is beated and the film flying or the film dancing phenomenon of commutator segment, Chinese patent 99103798.7 " a kind of commutator ", Chinese patent 99248770.6 " a kind of reinforcing commutator ", Chinese patent 95194961.6 " manufacture method of a kind of improved change-over switch fixed system and this system ", Chinese patent 94190034.7 " a kind of collecting ring and reinforcing ring with motor of wing copper foil " discloses employing steel reinforcing ring respectively, no latitude glass fiber tape reinforcing ring or ceramics insulator reinforcing ring, the glass fibre of coiling or other ring, the metal dead ring waits the structure of improving commutator.Wherein, with regard to the metal mold reinforcing ring, because it is an electric conductor, can not directly contact with the conductor of outside, must connect a dielectric body device in addition could contact with conductor, and the metal reinforcing ring also easily causes between sheet and the sheet to puncture as electric conductor and opens circuit, moreover makes between its sheet withstand voltage properties poor owing to there are shortcomings such as heat distortion amount is big in it, thereby influences the serviceability of commutator.As seen, from the whole synthesis performance, be good with the reinforcing ring of making by insulating materials.But regrettably, do not disclose concrete manufacture method in the above-mentioned patent, thereby can not therefrom learn how to obtain intensity and all good insulating materials type reinforcing rings of heat resistance.
For this reason, the inventor is on the basis of having carried out big quantity research and repetition test, applied for that in 2002 application number is " a kind of manufacture method of high-strength stiffening ring of commutator " of 02112020.X, its disclosed concrete grammar is as follows: prescription is weighed with weight: 1. the F51 epoxy resin of selecting dilution for use is raw material, add 304 liquid curing agent 60-80% again, fully stir and make the reinforcing ring resin; 2. selecting the E27/3 non-alkali yarn for use is raw material, be immersed in the groove that is added with 50-70% reinforcing ring resin on the ring winding machine, automatically will scribble the non-alkali yarn coiled flake rod of reinforcing ring resin through ring winding machine, and the flake rod that winds be put into baking oven 3-12 hour, temperature is controlled at 80-300 ℃; 3. the flake rod of oven dry is taken out from baking oven, after the cooling, used the machining equipment kilograms per centimeter
2The face processing and polishing is unclamped flake rod then, and the reinforcing ring that makes is taken out.The high-strength stiffening ring made from the method, high temperature resistantly reach 300 ℃, tensile strength is up to arriving 40-80MPa, and the dielectric strength height, anti-aging, simultaneously low temperature resistant again, be placed on commutator axially on, pour into whole commutator with inserts, commutator segment, mica sheet, increased the mechanical strength of commutator, increase substantially its quality and life-span.But the inventor finds in actual production, adopts this method to produce reinforcing ring and still comes with some shortcomings: the one, and the tensile strength of product itself only is 40～80 kilograms per centimeter
2, resistance to elevated temperatures only is below 300 ℃, all remain further to be improved, the 2nd, adopt flake rod be mould exist in process of production technology loaded down with trivial details, be awkward, defective that production efficiency is low, can not adapt to batch production requirement.
Summary of the invention
Technical problem to be solved by this invention is the manufacture method of a kind of strengthening ring for commutator of exploitation, with acquisition tensile strength and the improved reinforcing ring of resistance to elevated temperatures, and makes technology obtain simplifying to adapt to requirement of mass production.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the manufacture method of this kind strengthening ring for commutator is characterized in that may further comprise the steps:
A, preparation resin mother liquor: with F46 epoxy resin and 504 curing agent is raw material, is to weigh in 1:0.7～0.8 by the two weight ratio, stirs stand-by after the mixing;
B, be 1, take by weighing 0.65～0.72 alkali-free glass yarn, the alkali-free glass yarn is immersed in the resin mother liquor in resin mother liquor and alkali-free glass yarn gross weight;
C, be wound on the rod iron that uses as mould, again the rod iron that winds put into baking oven, under 180～240 ℃ of conditions, dried by the fire 4～8 hours at the alkali-free glass yarn that will soak into the resin mother liquor on the coner;
D, with the oven dry rod iron from baking oven, take out cooling, the cavetto outer surface will be taken out from rod iron by the hollow pipe that alkali-free glass yarn and cured resin constitute then;
E, with cutting equipment described hollow pipe is cut into the reinforcing ring blank, deburring in drum then.
F, the reinforcing ring after the deburring is cured 6～8 hours in baking oven under 200～280 ℃ of conditions,, guarantee that product has enough intensity and resistance to elevated temperatures so that the curing of resin is more complete.
Also can mix reactive diluent 501 in the described resin mother liquor, the addition of reactive diluent 501 is below 15% of F46 weight epoxy.
Above-mentioned 504 curing agent and diluent 501 are the product that Shanghai Resin Factory Co., Ltd. produces.Wherein, 504 curing agent are isomerization liquid acid anhydride curing agents, are light yellow transparency liquid, freezing point≤-18 ℃, and acid anhydride base content 〉=40%, density (20 ℃) is 1.205～1.215g/cm
3Diluent 501 is fatty alcohol glycidol ethers of a kind of simple function, and it has the epoxy radicals of reactivity, and viscosity is very low, can reduce the viscosity of epoxy resin significantly.Diluent 501 is a transparency liquid, and epoxide equivalent is 180～200g/eq, and viscosity (25 ℃) is 2mPa.s, and density (20 ℃) is 0.905～0.915g/cm
3
The reinforcing ring that the inventive method is made both can be embedded in the commutator and use, to strengthen the mechanical strength of commutator, can be enclosed within directly also that commutator is external to reach same enhancing effect, as for specifically being to adopt to be embedded in the mode of using in the commutator or directly to be enclosed within the outer mode of using of commutator, need to decide according to factors such as the size of commutator and structures.
Compared with prior art, the invention has the advantages that: 1, when keeping characteristics such as existing product dielectric strength height, high electricity are situated between, ageing resistace is good, low temperature resistant, the intensity and the resistance to elevated temperatures of product significantly improve, the reinforcing ring that this method is made can be anti-up to 280～350 ℃ of high temperature, tensile strength is up to 800～1200MPa, it is outer or be placed in the commutator that this reinforcing ring is enclosed within engine commutator, can increase the mechanical strength of commutator greatly, increase substantially the quality and the service life of commutator.2, the present invention adopts rod iron as mould, and the loaded down with trivial details step of having saved cover, having got thin slice has been simplified operation greatly, has improved production efficiency, helps producing in enormous quantities.3, cutting operation is that the hollow pipe that takes off from mould is carried out, rather than cutting is taken off reinforcing ring from mould more earlier, so need not accurate location, does not also worry mold damage, thereby greatly reduces the difficulty of cutting.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment
A, preparation resin mother liquor: with F46 epoxy resin and 504 curing agent is raw material, is to weigh in 1:0.7～0.8 by the two weight ratio, after the mixing, stirs and pour in the ring winding machine stand-by.When preparation resin mother liquor, if environment temperature is low excessively, can suitably heat or add a small amount of reactive diluent as 501 etc. to regulate the viscosity of resin system, the addition of reactive diluent is generally below 15% of F46 weight epoxy.
B, be 1, take by weighing 0.65～0.72 alkali-free glass yarn, the alkali-free glass yarn is immersed in the resin mother liquor in resin mother liquor and alkali-free glass yarn gross weight;
C, be ready to the rod iron that uses as mould, these rod iron two ends are processed with screw thread and are bolted with nut, be wound at the alkali-free glass yarn that will soak into the resin mother liquor on the coner between two nuts of rod iron, again the rod iron that winds put into baking oven, under 180～240 ℃ of conditions, dried by the fire 4～8 hours.
D, the rod iron of oven dry is taken out cooling from baking oven, the wheeled litter of getting on the bus is justified outer surface, screws off nut then, will be taken out from rod iron by the hollow pipe that alkali-free glass yarn and cured resin constitute;
E, go up lathe cut or described hollow pipe is cut into the reinforcing ring blank, advance the drum deburring then with cutting machine.
F, the reinforcing ring after the deburring cured under 200～280 ℃ of conditions in baking oven got final product in 6～8 hours.
Claims (3)
1, a kind of manufacture method of strengthening ring for commutator is characterized in that may further comprise the steps:
A, preparation resin mother liquor: with F46 epoxy resin and 504 curing agent is raw material, is 1: 0.7～0.8 to weigh by the two weight ratio, stirs stand-by after the mixing;
B, be 1, take by weighing 0.65～0.72 alkali-free glass yarn, the alkali-free glass yarn is immersed in the resin mother liquor in resin mother liquor and alkali-free glass yarn gross weight;
C, be wound on the rod iron that uses as mould, again the rod iron that winds put into baking oven, under 180～240 ℃ of conditions, dried by the fire 4～8 hours at the alkali-free glass yarn that will soak into the resin mother liquor on the coner;
D, with the oven dry rod iron from baking oven, take out cooling, the cavetto outer surface will be taken out from rod iron by the hollow pipe that alkali-free glass yarn and cured resin constitute then;
E, described hollow pipe is cut into reinforcing ring blank, deburring then with cutting equipment.
F, the reinforcing ring after the deburring was cured 6～8 hours under 200～280 ℃ of conditions in baking oven.
2, the manufacture method of reinforcing ring according to claim 1 is characterized in that also being mixed with reactive diluent in the described resin mother liquor, and the addition of reactive diluent is below 15% of F46 weight epoxy.
3, the manufacture method of reinforcing ring according to claim 2 is characterized in that described reactive diluent is a diluent 501.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100232103A CN100484741C (en) | 2005-01-10 | 2005-01-10 | Method for manufacturing strengthening ring for commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100232103A CN100484741C (en) | 2005-01-10 | 2005-01-10 | Method for manufacturing strengthening ring for commutator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1640652A CN1640652A (en) | 2005-07-20 |
| CN100484741C true CN100484741C (en) | 2009-05-06 |
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ID=34875802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100232103A Expired - Fee Related CN100484741C (en) | 2005-01-10 | 2005-01-10 | Method for manufacturing strengthening ring for commutator |
Country Status (1)
| Country | Link |
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| CN (1) | CN100484741C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359769C (en) * | 2006-02-20 | 2008-01-02 | 叶云弟 | Production of high-temperature-resisting reinforced ring of commutator and producer thereof |
| CN100453299C (en) * | 2006-04-14 | 2009-01-21 | 宁波市江北华丰绝缘电器厂 | Method for manufacturing strengthening ring of commutator |
| CN102601988B (en) * | 2012-02-27 | 2014-04-30 | 宁波市江北宏菱绝缘材料厂 | Manufacturing method for strengthening ring for reverser |
| CN105375225A (en) * | 2015-11-19 | 2016-03-02 | 华瑞电器股份有限公司 | Reinforced commutator |
| CN107437872A (en) * | 2017-09-01 | 2017-12-05 | 瑞安市联成电器配件有限公司 | The processing method of motor reinforcing ring |
-
2005
- 2005-01-10 CN CNB2005100232103A patent/CN100484741C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 机械工业出版社. 董锐.塑料工业手册. 2000 |
| 机械工业出版社. 董锐.塑料工业手册. 2000 * |
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| Publication number | Publication date |
|---|---|
| CN1640652A (en) | 2005-07-20 |
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Owner name: NINGBO JIANGBEI HONGLING INSULATING MATERIAL FACTO Free format text: FORMER OWNER: SUN MAYU Effective date: 20120116 |
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Free format text: CORRECT: ADDRESS; FROM: 315032 NINGBO, ZHEJIANG PROVINCE TO: 311120 NINGBO, ZHEJIANG PROVINCE |
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Effective date of registration: 20120116 Address after: 311120 Ma Road Industrial Park, Jiangbei District, Zhejiang, Ningbo Patentee after: Ningbo Hongling Insulating Material Factory Address before: 315032, room 5, No. 7, Lane 401, Zhuang Qiao street, Jiangbei District, Zhejiang, Ningbo Patentee before: Sun Mayu |
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