CN102480092A - Manufacture method of carbon brush, manufacture method of carbon rod and carbon brush - Google Patents
Manufacture method of carbon brush, manufacture method of carbon rod and carbon brush Download PDFInfo
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- CN102480092A CN102480092A CN2010105673419A CN201010567341A CN102480092A CN 102480092 A CN102480092 A CN 102480092A CN 2010105673419 A CN2010105673419 A CN 2010105673419A CN 201010567341 A CN201010567341 A CN 201010567341A CN 102480092 A CN102480092 A CN 102480092A
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Abstract
The invention discloses a manufacture method of a carbon brush, a manufacture method of a carbon rod and the carbon brush. The manufacture method of the carbon brush comprises the following steps: mixing graphite powder, lead powder and copper powder to obtain a mixture, wherein, the mixture comprises, by weight, 71%-79% of the graphite powder, 17%-23% of the lead powder and 4%-6% of copper powder; adding a bonding agent into the mixture to carry out uniform mixing; carrying out moulding processing on the mixture which is added with the bonding agent, and heating the mixture after moulding; carrying out graphitization processing on the mixture after heating to obtain the carbon rod; connecting one end of a spring with one end of the carbon rod, connecting the other end of the spring with one end of a connection shaft with conductivity, and fixing the other end of the connection shaft with a backseat.
Description
Technical field
The present invention relates to the integrated circuit sealed in unit and make the field, relate in particular to a kind of manufacturing approach of carbon brush, the manufacturing approach and the carbon brush of carbon-point.
Background technology
The working mechanism of scribing machine is to carry out workpiece processing through high-rate grinding; In scribing machine; Static air pressure electricity main shaft is the execution unit of high-rate grinding, surveys the position height that high carbon brush is used for Measurement of Air static pressure electricity main shaft, and this has highly determined the cutting-up degree of depth of scribing machine.
Because scribing machine requires during to the workpiece cutting-up accuracy of cutting-up higher, therefore a lot of extraneous factors all can influence the accuracy of surveying high process, and in case survey high process and lose accurate or lost efficacy, and will cause workpiece to damage or scrap.
When scribing machine was worked, the main shaft of high speed rotating (for example, the rotary speed of main shaft can be 30000 rev/mins) contacted with each other with the high carbon brush of survey; Therefore; Survey high carbon brush can be worn and produce distortion, the factor of surveying each side such as loose contact between high electrical resistance that high carbon brush component itself had and carbon brush and the static air pressure electricity main shaft all can influence the accuracy of surveying high process, and then influences the result who processes, and main shaft is worn; Influence the precision of main shaft, improve maintenance cost.
In addition; Adopt the equipment of static air pressures electricity main shafts and adopt in the equipment of other main shafts that run up at other; Equally need be (for example to the position of static air pressure electricity main shaft; Height etc.) measure, therefore, can occur equally because the impedance and the carbon brush loose contact of carbon brush wearing and tearing, carbon brush itself cause measuring inaccurate problem.
At present, the problems referred to above to carbon brush in the correlation technique exists do not propose effective solution at present as yet.
Summary of the invention
Cause measuring inaccurate problem to impedance and the carbon brush loose contact owing to carbon brush wearing and tearing, carbon brush itself in the correlation technique; The present invention proposes a kind of manufacturing approach of carbon brush, the manufacturing approach and the carbon brush of carbon-point, can reduce carbon brush and rotating shaft coefficient of friction, reduce carbon-point impedance, avoid the problem of carbon-point and rotating shaft loose contact.
Technical scheme of the present invention is achieved in that
The invention provides a kind of manufacturing approach of carbon brush.
Manufacturing approach according to carbon brush of the present invention comprises: graphite powder, lead powder and copper powder are mixed; Obtain mixture; Wherein, The weight of graphite powder accounts for the 71%-79% of said mixture total weight amount described in the said mixture, and the weight of said lead powder accounts for the 17%-23% of said mixture total weight amount, and the weight of said copper powder accounts for the 4%-6% of said mixture total weight amount; Bonding agent joined in the said mixture and with said mixture evenly mix; Mixture to adding behind the said bonding agent carries out forming processes, and the said mixture after the moulding is heated; Mixture after the heating is carried out graphitization processing obtain carbon-point; One end of spring is connected with an end of said carbon-point, and the other end of said spring is connected with an end of the connecting axle with conductivity, the other end and the back seat of said connecting axle are fixed.
This method further comprises: through lead said carbon-point is connected with said connecting axle; Wherein, One end of said lead and an end of said spring are connected to the same end of said carbon-point, and the other end of said lead and the other end of said spring are connected to the same end of said connecting axle.
Wherein, said lead is positioned at the passage that said spring forms.
Particularly, an end of said lead is connected with said connecting axle through the mode of welding, and, when the said mixture after the moulding is heated, the other end of said lead is connected to said carbon-point, through heating with said lead fixed said carbon-point extremely.
Preferably, the said mixture after the moulding is heated comprise: is that 1000 degree carry out roasting with the said mixture after the moulding to the situation of 1500 degree in temperature.
And said spring is fixedly connected with said connecting axle with said carbon-point through the mode of socket.
In addition, said connecting axle is fixed with the mode and the said back seat of interference fit.
Alternatively, said adhesive is a resin.
Preferably, in the mixture before adding said bonding agent, the content of said graphite powder accounts for 75%, and the content of said lead powder accounts for 20%, and the content of said copper powder accounts for 5%.
The present invention also provides a kind of manufacturing approach of carbon-point.
Manufacturing approach according to carbon-point of the present invention comprises: graphite powder, lead powder and copper powder are mixed; Obtain mixture; Wherein, The weight of graphite powder accounts for the 71%-79% of said mixture total weight amount described in the said mixture, and the weight of said lead powder accounts for the 17%-23% of said mixture total weight amount, and the weight of said copper powder accounts for the 4%-6% of said mixture total weight amount; Bonding agent joined in the said mixture and with said mixture evenly mix; Mixture to adding behind the said bonding agent carries out forming processes, and the said mixture after the moulding is heated; Mixture after the heating is carried out graphitization processing obtain carbon-point.
The present invention also provides a kind of carbon brush.
Carbon brush according to the present invention comprises carbon-point, spring, connecting axle and back seat; Wherein, Said carbon-point is by mixture that comprises graphite powder, lead powder and copper powder and the bonding agent that joins in the said mixture are carried out obtaining after moulding, heating and the graphitization processing; The weight of graphite powder accounts for the 71%-79% of said mixture total weight amount described in the said mixture; The weight of said lead powder accounts for the 17%-23% of said mixture total weight amount, and the weight of said copper powder accounts for the 4%-6% of said mixture total weight amount; And an end of said spring is connected with an end of said carbon-point, and the other end of said spring is connected with an end of the connecting axle with conductivity, and the other end and the back seat of said connecting axle are fixed.
The carbon brush that the present invention makes can contact with rotating shaft by spring, avoids the problem of loose contact, and because carbon-point has adopted graphite powder and lead powder; Can effectively reduce the coefficient of friction of carbon-point,, can make that carbon-point has certain rigid through adopting copper powder to rotating shaft; Thereby can effectively improve the precision of measurement; And can prolong the life-span of carbon brush, can also avoid the carbon brush wear spindle, effectively reduce the cost of equipment.
Description of drawings
Fig. 1 is the flow chart according to the manufacturing approach of the carbon brush of the embodiment of the invention;
Fig. 2 is the structural representation according to the carbon brush of the manufacturing approach manufacturing of the carbon brush of the embodiment of the invention.
Embodiment
Cause measuring inaccurate problem to impedance and the carbon brush loose contact owing to carbon brush wearing and tearing, carbon brush itself in the correlation technique, the present invention proposes a kind of manufacturing approach of carbon brush, wherein; Making and being coupling during the carbon-point that touches of high speed rotating such as static air pressure electricity main shaft, electric main shaft; Adopted a certain proportion of graphite powder, copper powder and lead powder, like this, not only can make carbon-point have certain rigid; But also can reduce the impedance of carbon-point and the coefficient of friction of carbon-point and rotating shaft; Thereby can effectively improve the precision of measurement, and can prolong the life-span of carbon brush, can also avoid the carbon brush wear spindle.
To describe manufacturing approach below in detail according to the carbon brush of the embodiment of the invention.
Can be applied to scribing machine etc. according to the carbon brush of the manufacturing approach manufacturing of the carbon brush of the embodiment of the invention and comprise in the equipment of static air pressure electricity main shaft, this carbon brush is used for the position (for example, highly) of static air pressure electricity main shaft and electric main shaft is measured.
As shown in Figure 1, comprise according to the manufacturing approach of the carbon brush of the embodiment of the invention:
Step S101 mixes graphite powder, lead powder and copper powder, obtains mixture, and wherein, the content of graphite powder accounts for 71%-79% in the mixture, and the content of lead powder accounts for 17%-23%, and the content of copper powder accounts for 4%-6%;
Step S103 joins bonding agent in the mixture and with mixture and evenly to mix;
Step S105 carries out forming processes to the mixture behind the adding bonding agent, and the mixture after the moulding is heated;
Step S107 obtains carbon-point (to step S107, can accomplish the making according to carbon-point of the present invention through execution in step S101) through the mixture after the heating is carried out graphitization processing;
Step S109 is fixedly connected an end of spring, and the other end of spring is fixedly connected with an end of connecting axle with an end of carbon-point, the other end and the back seat of connecting axle are fixed.
Through said method, make the carbon brush of making to contact with rotating shaft by spring, avoid the problem of loose contact; And because carbon-point has adopted graphite powder and lead powder, can effectively reduce the coefficient of friction of carbon-point, through adopting copper powder to rotating shaft; Can make that carbon-point has certain rigid, thereby can effectively improve the precision of measurement, and can prolong the life-span of carbon brush; Can also avoid the carbon brush wear spindle, effectively reduce the cost of equipment.
At an end of above-mentioned carbon-point and an end of connecting axle, can jut be set respectively, like this, an end of spring 3 just can be socketed on the jut of carbon-point, and the other end of spring just can be socketed on the jut of connecting axle, so that fixing.In addition, spring can also adopt other mode to be connected with connecting axle with carbon-point, conducts as long as can guarantee spring and carbon-point and connecting axle.
When the mixture that has added bonding agent is carried out moulding, can utilize semidry method to carry out compression molding.
In order further to guarantee the conductivity between carbon-point and the connecting axle; Above-mentioned manufacturing approach can also comprise: through lead carbon-point is connected with connecting axle; Wherein, One end of lead and an end of spring are connected to the same end of carbon-point, and the other end of lead and the other end of spring are connected to the same end of connecting axle.
Like this, carry out conductivity, can further avoid loose contact and influence the problem of measurement through spring and lead.
Alternatively, lead can be positioned at the passage that spring forms.
And lead can be connected with connecting axle with carbon-point in several ways, for example; One end of lead can be connected with connecting axle through fixed forms such as welding, and, when the mixture after the moulding is heated; The other end of lead is connected to carbon-point; Like this, when carbon-point is heated, just can be on carbon-point with lead fixed.In addition, lead can also adopt other mode to be connected with connecting axle with carbon-point, conducts as long as can guarantee lead and carbon-point and connecting axle.
Alternatively, when the mixture after the moulding is heated, can be to carry out roasting under 1000 degrees centigrade to 1500 degrees centigrade the situation in temperature to the mixture after the moulding.
The fixed form of spring and carbon-point and connecting axle has a lot, for example, can the mode of spring through socket be fixedly connected with connecting axle with carbon-point.
In order to guarantee the steadiness between back seat and the connecting axle, connecting axle can be fixed through the mode and the back seat of interference fit.
In an application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 75%, and the content of lead powder accounts for 20%, and the content of copper powder accounts for 5%, when heating, can adopt 1250 degrees centigrade problem to carry out roasting.
In the another application of the invention instance, in the mixture before adding bonding agent, the content of graphite powder accounts for 71%, and the content of lead powder accounts for 23%, and the content of copper powder accounts for 6%, when heating, can adopt 1000 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 77%, and the content of lead powder accounts for 17%, and the content of copper powder accounts for 6%, when heating, can adopt 1500 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 75%, and the content of lead powder accounts for 21%, and the content of copper powder accounts for 4%, when heating, can adopt 1250 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 73%, and the content of lead powder accounts for 22%, and the content of copper powder accounts for 5%, when heating, can adopt 1000 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 78%, and the content of lead powder accounts for 17%, and the content of copper powder accounts for 5%, when heating, can adopt 1500 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 74%, and the content of lead powder accounts for 20%, and the content of copper powder accounts for 6%, when heating, can adopt 1300 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 73%, and the content of lead powder accounts for 23%, and the content of copper powder accounts for 4%, when heating, can adopt 1400 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 72%, and the content of lead powder accounts for 23%, and the content of copper powder accounts for 5%, when heating, can adopt 1350 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 72%, and the content of lead powder accounts for 23%, and the content of copper powder accounts for 5%, when heating, can adopt 1450 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 72%, and the content of lead powder accounts for 22%, and the content of copper powder accounts for 6%, when heating, can adopt 1200 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 74%, and the content of lead powder accounts for 21%, and the content of copper powder accounts for 5%, when heating, can adopt 1150 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 76%, and the content of lead powder accounts for 18%, and the content of copper powder accounts for 6%, when heating, can adopt 1100 degrees centigrade problem to carry out roasting.
In another application example of the present invention, in the mixture before adding bonding agent, the content of graphite powder accounts for 76%, and the content of lead powder accounts for 19%, and the content of copper powder accounts for 5%, when heating, can adopt 1050 degrees centigrade problem to carry out roasting.
In implementation procedure of the present invention, in requirement before, the content ratio of graphite powder, lead powder and copper powder can also have other combinations, and this paper enumerates no longer one by one.
The parameter of the carbon-point of making by the way is following: resistivity 35-58 μ Ω m, contact drop 1.7-3.57, coefficient of friction≤0.27, bulk density 1.64g/cm
3
Above-mentioned spring can adopt copper wire; In order to make the elasticity of spring suitable, the diameter of spring wire can be φ 0.2mm, and the middle footpath of spring can be φ 2.5mm; Coiling completes the concrete parameter in back for curling up than being 13 (or other values); Like this, spring rate 0.054, limit load 1.095N.Wherein, provided the concrete parameter index of spring here, in practical application, can change These parameters, this paper no longer details.
Fig. 2 shows the carbon brush that obtains through the said method manufacturing.
The present invention also provides a kind of carbon brush; Comprise carbon-point 1, spring 2, connecting axle 3 and back seat 4; Wherein, Said carbon-point 1 is by mixture that comprises graphite powder, lead powder and copper powder and the bonding agent that joins in the said mixture are carried out obtaining after moulding, heating and the graphitization processing; The weight of graphite powder accounts for the 71%-79% of said mixture total weight amount described in this mixture, and the weight of said lead powder accounts for the 17%-23% of said mixture total weight amount, and the weight of said copper powder accounts for the 4%-6% of said mixture total weight amount; And an end of said spring is connected with an end of said carbon-point, and the other end of said spring is connected with an end of the connecting axle with conductivity, and the other end and the back seat of said connecting axle are fixed.
In addition, connecting axle 3 is fixed with the mode of interference fit with back seat 4, can also be connected with the lead (not shown) between carbon-point 1 and the connecting axle 3, and lead is arranged in the passage of spiral spring property one-tenth.
When measuring; Carbon-point 1 closely contacts with the rotor of equipment such as static air pressure electricity main shaft, electric main shaft, and when the main shaft high speed rotating, carbon-point 1 rubs on spindle rotor (wherein; Carbon-point is slight contact rotor under the effect of spring; Rotor is not caused excessive friction, rotates even the main shaft of grinding away thereby avoid influencing main shaft), can accomplish measurement.
Carbon brush made according to the method for the present invention can be applied to comprise in the high-speed rotating equipments such as static air pressure electricity main shaft, electric main shaft (for example, scribing machine etc.).
In sum; Carbon brush by means of technique scheme manufacturing of the present invention has strong, the carbon-point little, good conductivity that rubs of resistance to wear, by means of compression spring, can carbon-point be withstood in the rotating shaft with certain power; Thereby can avoid the main shaft loose contact of carbon-point and rotation; Therefore, the carbon brush of manufacturing of the present invention has the long life-span, and can be in the normal operation that itself is not easy to guarantee under the situation that occurs being worn main shaft; Reduction can effectively prolong the life-span of main shaft to the harmful effect of main shaft.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the manufacturing approach of a carbon brush is characterized in that, said method comprises:
Graphite powder, lead powder and copper powder are mixed; Obtain mixture; Wherein, The weight of graphite powder accounts for the 71%-79% of said mixture total weight amount described in the said mixture, and the weight of said lead powder accounts for the 17%-23% of said mixture total weight amount, and the weight of said copper powder accounts for the 4%-6% of said mixture total weight amount;
Bonding agent joined in the said mixture and with said mixture evenly mix;
Mixture to adding behind the said bonding agent carries out forming processes, and the said mixture after the moulding is heated;
Mixture after the heating is carried out graphitization processing obtain carbon-point;
One end of spring is connected with an end of said carbon-point, and the other end of said spring is connected with an end of the connecting axle with conductivity, the other end and the back seat of said connecting axle are fixed.
2. manufacturing approach according to claim 1 is characterized in that, also comprises:
Through lead said carbon-point is connected with said connecting axle, wherein, an end of said lead and an end of said spring are connected to the same end of said carbon-point, and the other end of said lead and the other end of said spring are connected to the same end of said connecting axle.
3. manufacturing approach according to claim 2 is characterized in that, said lead is positioned at the passage that said spring forms.
4. manufacturing approach according to claim 2; It is characterized in that; One end of said lead is connected with said connecting axle through the mode of welding, and, when the said mixture after the moulding is heated; The other end of said lead is connected to said carbon-point, through heating with said lead fixed to said carbon-point.
5. manufacturing approach according to claim 1 is characterized in that, the said mixture after the moulding is heated comprise: is that 1000 degree carry out roasting with the said mixture after the moulding to the situation of 1500 degree in temperature.
6. manufacturing approach according to claim 1 is characterized in that, said spring is fixedly connected with said connecting axle with said carbon-point through the mode of socket.
7. manufacturing approach according to claim 1 is characterized in that, said connecting axle is fixed with the mode and the said back seat of interference fit.
8. manufacturing approach according to claim 1 is characterized in that, said adhesive is a resin.
9. according to each described manufacturing approach in the claim 1 to 8, it is characterized in that in the mixture before adding said bonding agent, the content of said graphite powder accounts for 75%, the content of said lead powder accounts for 20%, and the content of said copper powder accounts for 5%.
10. the manufacturing approach of a carbon-point is characterized in that, said method comprises:
Graphite powder, lead powder and copper powder are mixed; Obtain mixture; Wherein, The weight of graphite powder accounts for the 71%-79% of said mixture total weight amount described in the said mixture, and the weight of said lead powder accounts for the 17%-23% of said mixture total weight amount, and the weight of said copper powder accounts for the 4%-6% of said mixture total weight amount;
Bonding agent joined in the said mixture and with said mixture evenly mix;
Mixture to adding behind the said bonding agent carries out forming processes, and the said mixture after the moulding is heated;
Mixture after the heating is carried out graphitization processing obtain carbon-point.
11. carbon brush; It is characterized in that; Comprise carbon-point, spring, connecting axle and back seat; Wherein, said carbon-point is by carrying out obtaining after moulding, heating and the graphitization processing to mixture that comprises graphite powder, lead powder and copper powder and the bonding agent that joins in the said mixture, and the weight of graphite powder accounts for the 71%-79% of said mixture total weight amount described in the said mixture; The weight of said lead powder accounts for the 17%-23% of said mixture total weight amount, and the weight of said copper powder accounts for the 4%-6% of said mixture total weight amount; And an end of said spring is connected with an end of said carbon-point, and the other end of said spring is connected with an end of the connecting axle with conductivity, and the other end and the back seat of said connecting axle are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010567341.9A CN102480092B (en) | 2010-11-25 | 2010-11-25 | Manufacture method of carbon brush, manufacture method of carbon rod and carbon brush |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010567341.9A CN102480092B (en) | 2010-11-25 | 2010-11-25 | Manufacture method of carbon brush, manufacture method of carbon rod and carbon brush |
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| CN102480092A true CN102480092A (en) | 2012-05-30 |
| CN102480092B CN102480092B (en) | 2014-09-17 |
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| CN102856758A (en) * | 2012-09-21 | 2013-01-02 | 丽水市长新电器制造有限公司 | Electric brush for ABS system and preparation method thereof |
| CN103151667A (en) * | 2012-10-16 | 2013-06-12 | 浙江京马电机有限公司 | Direct current control series excitation motor single-chip carbon brush |
| CN104022425A (en) * | 2014-06-23 | 2014-09-03 | 3M中国有限公司 | Carbon brush and preparation method thereof |
| CN106033862A (en) * | 2015-03-18 | 2016-10-19 | 苏州东南电碳科技有限公司 | Manufacturing method of carbon brush used for locomotive traction motor |
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| CN106033862A (en) * | 2015-03-18 | 2016-10-19 | 苏州东南电碳科技有限公司 | Manufacturing method of carbon brush used for locomotive traction motor |
| CN106033862B (en) * | 2015-03-18 | 2018-07-13 | 苏州东南佳新材料股份有限公司 | A kind of preparation method of locomotive traction motor carbon brush |
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| Publication number | Publication date |
|---|---|
| CN102480092B (en) | 2014-09-17 |
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