CN103762473B - A kind of powder compacting carbon face commutator and its manufacturing process - Google Patents
A kind of powder compacting carbon face commutator and its manufacturing process Download PDFInfo
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- CN103762473B CN103762473B CN201310754944.3A CN201310754944A CN103762473B CN 103762473 B CN103762473 B CN 103762473B CN 201310754944 A CN201310754944 A CN 201310754944A CN 103762473 B CN103762473 B CN 103762473B
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Abstract
The present invention relates to a kind of powder compacting carbon face commutator and its manufacturing process, including carbon base body, main supporter, middle obturator and hook-type commutation bar, described carbon base body is embedded in the lower end inside for being fixed on main supporter, the intermediate arrangement of described main supporter has middle obturator, the upper end of described main supporter is provided with some pieces of copper sheets along even circumferential is embedded, every piece of copper sheet restocking is provided with hook-type commutation bar, the lower end of described hook-type commutation bar is embedded in carbon base body, bakelite bisque is filled with described middle obturator and the gap between copper sheet and main supporter, carbon base body is pressed after being added in main supporter for graphite powder again, simultaneously hook-type commutation bar is wrapped in interior.Commutator structure of the present invention is exquisite, eliminates welding step, reduce cost in technique, and when solving the problems, such as corresponding rotor spot welding using the assembling of copper sheet and commutator segment, temperature is too high.
Description
Technical field
The present invention relates to commutator field, more particularly to a kind of powder compacting carbon face commutator and its manufacturing process.
Background technology
Carbon commutator is widely used in the motor that common commutator cannot be adapted to its excellent corrosion-resistant and anti-wear performance
In, its structure mainly includes being made up of insulation support body, conductor part and carbon plate.At present, the carbon plate and conduction of carbon commutator
Being fixedly connected for part typically adopt conductive adhesive, welding procedure or mosaic technology, wherein relatively more using conductive adhesive.
But conducting resinl price is very expensive, the production cost of carbon commutator is caused to remain high, in addition, conductive glue knot
Relatively poor with joint efforts, and degumming of being easily heated, heat resisting temperature is low, and service life is short, and operating difficulties causes the quality of carbon commutator steady
It is qualitative to there is hidden danger.
And welding procedure needs just be welded under special welding equipment and welding atmosphere, and technical process is relatively stranded
Difficulty, unreliable, the precious metal that its solder is adopted in addition, price are very expensive, and solder preserves trouble, is not suitable for carbon commutator
Large-scale production.
If in using the gapless pressing-in commutator component of carbon plate that will be molded, the carbon plate manufactured goods will be accomplished
It is highly difficult in technique to coordinate precision with conductor part, it is impossible to applied in large-scale production.
The manufacture method being currently known is first to make carbon plate and commutator assembly,
Seek again to be connected, due to the property of carbon plate, large-scale production is difficult to using bonding and welding procedure, and obtain
Product is unsatisfactory, therefore, it is necessary to seek other processes.
The content of the invention
The technical problem to be solved is to provide a kind of powder compacting carbon face commutator and its manufacturing process, technique
Simply, welding step is eliminated, reduce cost, corresponding rotor spot welding is solved using the assembling of copper sheet and commutator segment
Shi Wendu too high problem.
The technical solution adopted for the present invention to solve the technical problems is：A kind of powder compacting carbon face commutator is provided, is wrapped
Carbon base body, main supporter, middle obturator and hook-type commutation bar is included, described carbon base body is embedded in and is fixed in the lower end of main supporter
Side, the upper end that the intermediate arrangement of described main supporter has middle obturator, described main supporter are pacified along even circumferential is embedded
Equipped with some pieces of copper sheets, every piece of copper sheet restocking is provided with hook-type commutation bar, and the lower end of described hook-type commutation bar is embedded into carbon base body
In, bakelite bisque is filled with described middle obturator and the gap between copper sheet and main supporter.
The top of described main supporter is the T-shaped post of circumferentially homogeneous vertical arrangement, inner side between adjacent T-shaped post
Positioning step is connected with, the medial surface of the positioning step is provided with commutation bar locating slot between two parties.
Between described T-shaped post, vertical inserting is embedded with copper sheet, and the lateral surface of the copper sheet is flushed with the lateral surface of T-shaped post, described
The upper surface of copper sheet be provided with locating notch between two parties, the both sides vertical edge of the copper sheet is disposed with the flanging matched with T-shaped post.
The first half of described hook-type commutation bar is in " n " shape, and lower half is L-shaped, the n shapes first half and L-shaped lower half
Simultaneously by the transiting rod connection of vertically arrangement, the top of the described n shape first halves is horizontal part to global formation, and the horizontal part is embedded in
To in the locating notch of copper sheet upper end, described transiting rod is embedded in commutation bar locating slot, the bottom of described L-shaped lower half
Extension is embedded in carbon base body, the outside external part and the outside extension upper end phase arranged obliquely of described horizontal part
Even.
Described carbon base body is uniformly divided into identical with hook-type commutation bar by some by the insulation groove in its center of circle
The scallop of quantity, is also provided with breach with the corresponding position of insulation groove on described main supporter.
A kind of manufacturing process of powder compacting carbon face commutator, its specific manufacturing process is：
a：It is copper sheet and hook-type commutation bar by the machine-shaping of copper raw material block；
b：Copper sheet and hook-type commutation bar surface carry out ultrasonic wave and clean and carry out zinc-plated；
c：With the compressing main supporter of phenolic moulding powder and middle obturator；
d：Copper sheet and hook-type commutation bar are arranged in main supporter；
e：The main supporter for arranging is transferred in particular manufacturing craft, graphite powder is poured in the lower end of main supporter and is pressed
Make pie, compacting is carried out at normal temperatures, pressing pressure is 21 ± 3Mpa, pressurize 5 to 10 seconds, carbon base body and hook-type are commutated bar
It is compressed together；
f：After the completion of carbon base body compacting, fill out in obturator in loading, and the gap between middle obturator and main supporter
Bakelite bisque is constituted full of phenolic moulding powder, then the temperature at 155～165 DEG C applies the pressure of 23 ± 3Mpa to bakelite bisque, protects
Pressure is molded for 5 to 10 seconds, and adjacent hook-type commutation bar is separated by bakelite bisque completely；
g：The commutator matrix that compacting is completed is placed in an oven, and sintering temperature is 38～241 DEG C, and sintering time is 12
～13 hours, make the bonding between carbon base body and bakelite bisque molecule more firm；
h：A upper and lower through hole of insertion is bored in the center of middle obturator and carbon base body；
i：Milling insulation groove；
j：Inspection is qualified.
The component ratio of the graphite powder in further step e is, in terms of mass fraction：
Base material powder： 60%
Tin bronze powder： 40%
Wherein base material powder formula is as follows
Graphous graphite powder 88%
Phenolic resin 12%
It should be noted that phenolic resin is the excellent synthetic plastic of heat resistance, flame resistance, resistance to water and insulating properties, in height
Under temperature, which is mechanically and electrically functional, similar with the composition of phenolic moulding powder, can be diffused with phenolic moulding powder at high temperature, makes
Obtain carbon base body firmer, firmly hook-type commutation bar can be fixed.
Further setting is after graphite powder in step e is added in main supporter, then in graphite powder adds 20
Used as dispersant, during step f and g, acetone all can volatilize the acetone of part.
Further setting is, after graphite powder in step e is added in main supporter, to be additionally added 0.1 part of tristearin
Sour zinc is used as releasing agent.
Beneficial effect
The present invention relates to a kind of powder compacting carbon face commutator and its manufacturing process, commutator structure is simple, copper sheet and hook
Shape commutation bar matches assembling one by one, and phenolic moulding powder is filled with gap, it is ensured that between adjacent copper sheet or hook-type commutation bar
Insulating properties；When solving the problems, such as corresponding rotor spot welding using the assembling of copper sheet and commutator segment, temperature is too high；Hook-type
Commutation bar is embedded into when carbon plate is molded in carbon plate, eliminates welding or technique for sticking step；The carbon obtained by this law is changed
To device finished product, carbon plate is completely embedded with conductive component and supporting mass, very close to each other, carbon plate tensile strength up to more than 10N, and
Integrated artistic is simple, and low cost, versatility are good, can popularization and application and scale processing, and avoid conventional bonding and Welder
The shortcoming of the steady quality difference of skill.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention；
Fig. 2 is the half-sectional structural representation of the present invention；
Fig. 3 is the schematic perspective view of main supporter of the present invention；
Fig. 4 is the schematic perspective view of copper sheet of the present invention；
Fig. 5 is the schematic perspective view of hook-type commutation bar of the present invention；
Fig. 6 is the structural representation of step e of the present invention；
Fig. 7 is the sintering temperature-time plot of step g of the present invention.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art
Member can be made various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
As shown in figs. 1-7, embodiments of the present invention are related to a kind of powder compacting carbon face commutator and its manufacturing process, its
Structure includes carbon base body 6, main supporter 1, middle obturator 4 and hook-type commutation bar 3, and described carbon base body 6 is embedded to be fixed on main
The lower end inside of support body 1, the intermediate arrangement of described main supporter 1 have a middle obturator 4, the upper end edge of described main supporter 1
That even circumferential is embedded to be provided with some pieces of copper sheets 2, every piece of 2 restocking of copper sheet is provided with hook-type commutation bar 3, described hook-type commutation bar
3 lower end is embedded in carbon base body 6, is filled with described middle obturator 4 and the gap between copper sheet 2 and main supporter 1
Bakelite bisque 7.
The top of described main supporter 1 is the T-shaped post 11 of circumferentially homogeneous vertical arrangement, adjacent T-shaped post 11 it
Between inner side be connected with positioning step 12, the medial surface of the positioning step 12 is provided with commutation bar locating slot 13 between two parties.
Between described T-shaped post 11, vertical inserting is embedded with copper sheet 2, and the lateral surface of the copper sheet 2 is neat with the lateral surface of T-shaped post 11
Flat, the upper surface of described copper sheet 2 is provided with locating notch 22 between two parties, and the both sides vertical edge of the copper sheet 2 is disposed with and is matched with T-shaped post 11
Flanging 21.
The first half of described hook-type commutation bar 3 is in " n " shape, and lower half is L-shaped, the n shapes first half and L-shaped lower half
Global formation is simultaneously connected by the transiting rod 33 of vertically arrangement, and the top of the described n shape first halves is horizontal part 31, the horizontal part
31 are embedded in the locating notch 22 of 2 upper end of copper sheet, and described transiting rod 33 is embedded in commutation bar locating slot 13, described L
The bottom extension 34 of shape lower half is embedded in carbon base body 6, the outside external part of described horizontal part 31 with arrange obliquely
32 upper end of outside extension be connected.
Described carbon base body 6 is uniformly divided into and hook-type commutation 3 phase of bar by the insulation groove 5 in its center of circle by some
With the scallop of quantity, on described main supporter 1, the position corresponding with insulation groove 5 is also provided with breach.
Embodiment 1：
A:The copper sheet 2 and 8 hook-types for taking 8 of shaping commutates bars 3, and copper sheet 2 and 3 surface of hook-type commutation bar are surpassed
Sound wave is cleaned and is carried out zinc-plated；
B：With the compressing main supporter 1 of phenolic moulding powder and middle obturator 4；
C：8 copper sheets 2 and 8 hook-type commutation bars 3 are arranged in main supporter 1；
D：The main supporter 1 for arranging is transferred in particular manufacturing craft, graphite powder is poured in the lower end of main supporter 1
It is pressed into pie, compacting is carried out at normal temperatures, pressing pressure is 18Mpa, pressurize 10 seconds, the carbon base body 6 and hook-type bar 3 that commutates is pressed
System is together；
E：After the completion of carbon base body 6 is suppressed, obturator 4 in loading, and the gap between middle obturator 4 and main supporter 1
Middle filling completely phenolic moulding powder constitutes bakelite bisque 7, and then the temperature at 155 DEG C applies the pressure of 20Mpa, pressurize to bakelite bisque 7
It is molded within 10 seconds, adjacent hook-type commutation bar 3 is separated by bakelite bisque 7 completely；
F：The commutator matrix that completes of compacting is placed in an oven, the temperature of sintering according to Fig. 7 curve shown in 38
Change in～241 DEG C, sintering time is 12 hours, makes the bonding between 7 molecule of carbon base body 6 and bakelite bisque more firm；
G：A upper and lower through hole of insertion is bored in the center of middle obturator 4 and carbon base body 6；
H：Milling insulation groove 5；
I：Inspection is qualified.
The component ratio of the graphite powder in step D is, in terms of mass fraction：
Base material powder： 60%
Tin bronze powder： 40%
Wherein base material powder formula is as follows
Graphous graphite powder 88%
Phenolic resin 12%
Further setting is after graphite powder in step D is added in main supporter 1, then in graphite powder adds 20
Used as dispersant, during step f and g, acetone all can volatilize the acetone of part.
Further setting is to be additionally added 0.1 part hard after graphite powder in step D is added in main supporter 1
Resin acid zinc is used as releasing agent.
Embodiment 2
A:The copper sheet 2 and 12 hook-types for taking 12 of shaping commutates bars 3, and copper sheet 2 and 3 surface of hook-type commutation bar are carried out
Ultrasonic wave is cleaned and is carried out zinc-plated；
B：With the compressing main supporter 1 of phenolic moulding powder and middle obturator 4；
C：12 copper sheets 2 and 12 hook-type commutation bars 3 are arranged in main supporter 1；
D：The main supporter 1 for arranging is transferred in particular manufacturing craft, graphite powder is poured in the lower end of main supporter 1
It is pressed into pie, compacting is carried out at normal temperatures, pressing pressure is 24Mpa, pressurize 10 seconds, the carbon base body 6 and hook-type bar 3 that commutates is pressed
System is together；
E：After the completion of carbon base body 6 is suppressed, obturator 4 in loading, and the gap between middle obturator 4 and main supporter 1
Middle filling completely phenolic moulding powder constitutes bakelite bisque 7, and then the temperature at 165 DEG C applies the pressure of 26Mpa, pressurize to bakelite bisque 7
It is molded within 10 seconds, adjacent hook-type commutation bar 3 is separated by bakelite bisque 7 completely；
F：The commutator matrix that completes of compacting is placed in an oven, the temperature of sintering according to Fig. 7 curve shown in 38
Change in～241 DEG C, sintering time is 12.5 hours, makes the bonding between 7 molecule of carbon base body 6 and bakelite bisque more firm；
G：A upper and lower through hole of insertion is bored in the center of middle obturator 4 and carbon base body 6；
H：Milling insulation groove 5；
I：Inspection is qualified.
The component ratio of the graphite powder in step D is, in terms of mass fraction：
Base material powder： 60%
Tin bronze powder： 40%
Wherein base material powder formula is as follows
Graphous graphite powder 88%
Phenolic resin 12%
Further setting is after graphite powder in step D is added in main supporter 1, then in graphite powder adds 20
Used as dispersant, during step f and g, acetone all can volatilize the acetone of part.
Further setting is to be additionally added 0.1 part hard after graphite powder in step D is added in main supporter 1
Resin acid zinc is used as releasing agent.
Claims (8)
1. the commutation of a kind of powder compacting carbon face commutator, including carbon base body (6), main supporter (1), middle obturator (4) and hook-type
Bar (3), the embedded lower end inside for being fixed on main supporter (1) of described carbon base body (6), the centre of described main supporter (1)
Be disposed with middle obturator (4), it is characterised in that described main supporter (1) if upper end be provided with along even circumferential is embedded
Dry block copper sheet (2), the restocking of every piece of copper sheet (2) are provided with hook-type commutation bar (3), and the lower end of described hook-type commutation bar (3) is embedded into
In carbon base body (6), phenolic moulding powder in described middle obturator (4) and the gap between copper sheet (2) and main supporter (1), is filled with
Layer (7), described carbon base body (6) are uniformly divided into and hook-type commutation bar by the insulation groove (5) in its center of circle by some
(3) scallop of equal number, on described main supporter (1), the position corresponding with insulation groove (5) is also provided with breach.
2. a kind of powder compacting carbon face commutator according to claim 1, it is characterised in that：Described main supporter (1)
Top be circumferentially homogeneous vertical arrangement T-shaped post (11), between adjacent T-shaped post (11) inner side be connected with positioning step
(12), the medial surface of the positioning step (12) is provided with commutation bar locating slot (13) between two parties.
3. a kind of powder compacting carbon face commutator according to claim 2, it is characterised in that：Described T-shaped post (11) it
Between vertical inserting be embedded with copper sheet (2), the lateral surface of the copper sheet (2) is flushed with the lateral surface of T-shaped post (11), described copper sheet (2)
Upper surface is provided with locating notch (22) between two parties, and the both sides vertical edge of the copper sheet (2) is disposed with the flanging matched with T-shaped post (11)
(21)。
4. a kind of powder compacting carbon face commutator according to claim 1, it is characterised in that：Described hook-type commutation bar
(3), in " n " shape, lower half is L-shaped for the first half, and the n shapes first half is with L-shaped lower half global formation and by vertically arrangement
Transiting rod (33) connection, the top of the described n shape first halves is horizontal part (31), and the horizontal part (31) is embedded into copper sheet (2)
In the locating notch (22) of upper end, described transiting rod (33) is embedded in commutation bar locating slot (13), described L-shaped lower half
Bottom extension (34) be embedded in carbon base body (6), the outside external part of described horizontal part (31) with arrange obliquely
Outside extension (32) upper end is connected.
5. a kind of a kind of manufacturing process of powder compacting carbon face commutator as claimed in claim 1, its specific manufacturing process
For：
a：It is copper sheet (2) and hook-type commutation bar (3) by the machine-shaping of copper raw material block；
b：Copper sheet (2) and hook-type commutation bar (3) surface carry out ultrasonic wave and clean and carry out zinc-plated；
c：With the compressing main supporter (1) of phenolic moulding powder and middle obturator (4)；
d：Copper sheet (2) and hook-type commutation bar (3) are arranged in main supporter (1)；
e：The main supporter (1) for arranging is transferred in mould, graphite powder is poured in the lower end of main supporter (1) and is suppressed
Into the carbon base body (6) of pie, compacting is carried out at normal temperatures, and pressing pressure is 21 ± 3Mpa, pressurize 5 to 10 seconds, by carbon base body (6)
It is compressed together with hook-type commutation bar (3)；
f：After the completion of carbon base body (6) compacting, obturator (4) in loading, and between middle obturator (4) and main supporter (1)
Full phenolic moulding powder composition bakelite bisque (7) is filled in gap, then the temperature at 155～165 DEG C apply 23 to bakelite bisque (7) ±
The pressure of 3Mpa, pressurize are molded for 5 to 10 seconds, and adjacent hook-type commutation bar (3) is separated by bakelite bisque (7) completely；
g：The commutator matrix that compacting is completed is placed in an oven, and sintering temperature is 38～241 DEG C, and sintering time is 12～13
Hour, make the bonding between carbon base body (6) and bakelite bisque (7) molecule more firm；
h：A upper and lower through hole of insertion is bored in the center of middle obturator (4) and carbon base body (6)；
i：Milling insulation groove (5)；
j：Inspection is qualified.
6. the manufacturing process of a kind of powder compacting carbon face commutator according to claim 5, it is characterised in that in step e
The component ratio of graphite powder be, in terms of mass fraction：
Base material powder：60%
Tin bronze powder：40%
Wherein base material powder formula is as follows
Graphous graphite powder 88%
Phenolic resin 12%.
7. the manufacturing process of a kind of powder compacting carbon face commutator according to claim 6, it is characterised in that in step e
Graphite powder be added in main supporter (1) after, then 20 parts of acetone is added in graphite powder as dispersant, in step f
All can volatilize with acetone during g.
8. the manufacturing process of a kind of powder compacting carbon face commutator according to claim 6, it is characterised in that in step e
Graphite powder be added in main supporter (1) after, be additionally added 0.1 part of zinc stearate as releasing agent.
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| CN201310754944.3A CN103762473B (en) | 2013-12-31 | 2013-12-31 | A kind of powder compacting carbon face commutator and its manufacturing process |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204557A (en) * | 2016-03-17 | 2017-09-26 | 德昌电机(深圳)有限公司 | The preparation method of commutator, the motor using the commutator and commutator |
| CN107154570A (en) * | 2017-05-17 | 2017-09-12 | 薛伟 | A kind of commutator moulding process |
| CN108832449A (en) * | 2018-06-05 | 2018-11-16 | 深圳市纳明特科技发展有限公司 | Motor diverter preparation process and motor diverter |
| CN112152034A (en) * | 2019-06-26 | 2020-12-29 | 宁波胜克换向器有限公司 | Combined commutator and production processing technology thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055962A (en) * | 2007-05-28 | 2007-10-17 | 史文浩 | Cylinder carbon commutator and its making method |
| CN102859811A (en) * | 2009-12-04 | 2013-01-02 | 科莱克特集团公司 | Method for producing a flat commutator, and flat commutator |
| CN203707536U (en) * | 2013-12-31 | 2014-07-09 | 宁波胜克换向器有限公司 | Powder forming carbon surface commutator |
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2013
- 2013-12-31 CN CN201310754944.3A patent/CN103762473B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055962A (en) * | 2007-05-28 | 2007-10-17 | 史文浩 | Cylinder carbon commutator and its making method |
| CN102859811A (en) * | 2009-12-04 | 2013-01-02 | 科莱克特集团公司 | Method for producing a flat commutator, and flat commutator |
| CN203707536U (en) * | 2013-12-31 | 2014-07-09 | 宁波胜克换向器有限公司 | Powder forming carbon surface commutator |
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