CN102045907A - High frequency heating coil and heating method for workpiece - Google Patents
High frequency heating coil and heating method for workpiece Download PDFInfo
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- CN102045907A CN102045907A CN2009102060576A CN200910206057A CN102045907A CN 102045907 A CN102045907 A CN 102045907A CN 2009102060576 A CN2009102060576 A CN 2009102060576A CN 200910206057 A CN200910206057 A CN 200910206057A CN 102045907 A CN102045907 A CN 102045907A
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- frequency heating
- heating coil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention provides a high frequency heating coil. Even under the condition of heating a short shaft part in high frequency, the temperature deviation can be lowered. The high frequency heating coil is a semi-opened high frequency heating coil which is provided with two rows of arc parts, two rows of linear parts and more than two power supply parts, wherein the linear parts are shorter than the arc parts; the two rows of arc parts are oppositely arranged; the two rows of linear parts are continuous without any cracks; and both ends of each of the two rows of linear parts are intersected with two supposed circles comprising the two rows of arc parts.
Description
Technical field
The high frequency heating coil that the present invention relates to be used to quench etc. especially relates to the high frequency heating coil that such workpiece with axial region such as the cam of engine and bent axle are heated.In addition, the present invention relates to method that the workpiece with above-mentioned axial region is heated.
Background technology
For example shown in Figure 7, the bent axle of engine is made of a plurality of axial regions 1,2,3,4,5 and wall component parts 7,8,9,10.At this, axial region the 1,3, the 5th, the collar of the bearing of butt bolster self, axial region the 2, the 4th, the connecting rod neck of piston rod engaging.In addition, the bent axle of engine is that the wall component parts of how obtaining with the balance of piston at the opposition side of connecting rod neck is provided with weight portion, but in order to chart conveniently, only illustrates the shape that does not have weight portion.
When the axial region to bent axle carries out high-frequency quenching, use for example coil 100 of the semi-open type shown in Fig. 8,9.
The cross sectional shape of the semi-open molded lines circle 100 of prior art be in circular, rectangle or the square any.
The coil 100 of the semi-open type shown in Fig. 8,9 is the coil that two circular-arc 101 of row, 102 and two row line parts 105,106 are combined, and two power supplies 107,108 are located on the line part 106.Therefore, a line part 106 is cut apart by power supply 107,108, in the central part generation space 110 of line part 106.
When the axial region 3 of the mid portion of the 100 pairs of bent axles of coil that utilize semi-open type quenches, coil 100 is inserted between the wall component parts 8,9, cover under the state on the axial region 3 to coil 100 supply high frequency electric currents at coil 100 semi-open type.
Under this situation, the mid portion of axial region 3 is by line part 105,106 induction heating of the coil 100 of semi-open type.
In the prior art, the multicylinderengine that is loaded into automobile etc. is the cylinder array being arranged as main flow, but in order to shorten the total length of engine, adopts the situation of the engine that V word shape arranges also to increase in recent years.In addition, the motorcycle that has also adopts the engine with the configuration of cylinder flat opposed.
This class engine, although the number of cylinder is more, the length of bent axle is shorter, and the interval of above-mentioned wall component parts 8,9 is narrow, and the length of axial region 3 is short.Therefore, the gap between the circular-arc part 101,102 of the coil 100 of semi-open type is minimum, and the length of line part 105,106 is short.
Consequently, as shown in figure 10, there be the depth of quenching problem more shallow than both ends of axial region central portion in the axial region generation temperature deviation at workpiece.
The following describes its reason.
For example shown in Figure 11 (a), the central angle of supposing circular-arc position is 120 degree, and the coil 100 of per 60 degree angles of axial region 3 and the pass of axial region 3 are the state shown in Figure 11 (b)～Figure 12 (g).Therefore, when making axial region 2,4 rotation when utilizing 100 pairs of axial regions of coil 3 to carry out high-frequency induction heating, the each several part of axial region 3 repeats the state of Figure 11 (b)～Figure 12 (g).
Explanation in order is under the state of 0 degree in angle, and as Figure 11 (b), therefore the circular-arc part 101,102 of having only coil 100 has only the end of axial region 3 to be heated near axial region 3.
In angle is under the state of 60 degree, and as Figure 11 (c), the circular-arc part 101,102 of coil 100 and line part 106 are near axial region 3.But, owing to have power supply 107,108 at line part 106, and have space part 110 between the two, therefore, coil 100 keeps clear of the central portion of axial region 3.Therefore, be under the states of 60 degree in angle, can not the part of the close end of axial region 3 be heated.In angle is that as Figure 11 (d), Figure 11 (e), Figure 12 (f), any position of coil 100 all keeps clear of axial region 3 under the state of 120 degree, 180 degree, 240 degree.
In angle is under the states of 300 degree, and as Figure 12 (g), the line part of coil 100 106 is near axial regions 3, and the central portion of axial region 3 is heated.
Like this, the both end sides of axial region 3 is heated in the anglec of rotation scope of about 120 degree, and is relative with it, and the pars intermedia of axial region 3 is owing to having space part 110 at line part 106, so heated chance is few.In addition, particularly under the situation of axial region 3 weak points, the ratio that space part 110 accounts for line part 106 is big, and as mentioned above, at the axial region generation temperature deviation of workpiece, as Figure 10, the depth of quenching of the central portion of axial region becomes more shallow than both ends.
Summary of the invention
The present invention pays close attention to the problems referred to above point of prior art, and its technical task that will solve is, a kind of high frequency heating coil is provided, even short axial region is being carried out also can suppressing temperature deviation under the situation of high-frequency heating.In addition, the present invention provides a kind of heating means that can solve the workpiece of same technical task in the lump.
For solving above-mentioned problem, the invention provides a kind of high frequency heating coil, it is semi-open type, and has the above circular-arc portion of two row, with the above linearity portion of two row of reporting to the leadship after accomplishing a task with described circular-arc part, with plural power supply, utilize described circular-arc and linearity portion that the described axial region of workpiece with axial region is carried out high-frequency heating, wherein, the length of described linearity portion is shorter than the length of circular-arc portion, the circular-arc portion of at least two row is in opposed position, the above linearity portion of two row all is continuous, not having crackle, reports to the leadship after accomplishing a task with two imaginary circle that comprise the circular-arc portion of described two row in its two ends.
In the high frequency heating coil of the present invention, linearity portion all is continuous, does not have crackle, reports to the leadship after accomplishing a task with the imaginary circle that comprises the circular-arc conductive part of described two row in its two ends.Therefore, the space that does not have power supply in linearity portion.Therefore, when using high frequency heating coil of the present invention, can be by the mid portion of the above linearity portion heating axial region of two row, therefore, the temperature deviation of axial region is little.
As an example, high frequency heating coil of the present invention has circular-arc of two row and the above linearity portion of two row, via a row linearity portion end of the circular-arc portion of two row is connected to each other, the end of another a row linearity portion and a circular-arc portion is continuous, the position of end abutment of another distolateral arrival and the circular-arc portion that is in opposed position.
As another example, in the high frequency heating coil of the present invention, power supply all is connected in circular-arc portion.
In addition, at least one power supply can be connected in the end of at least one linearity portion.
Preferably, circular-arc is the following circular arcs of 180 degree.
Preferably, be provided with iron core in linearity portion.
Also can be that the high frequency heating coil that possesses the following circular-arc portion of 90 degree is disposing more than two on the same circumference.
Also can be that high frequency heating coil electricity with described formation is connected in series more than two, constitute a coil.
In addition, also can be, the high frequency heating coil electricity of described formation is connected in series two, constitute a coil, the power supply of a high frequency heating coil be in a circular-arc portion, and the power supply of another high frequency heating coil is in another circular-arc portion.
In addition, the invention provides a kind of heating means of workpiece, it is characterized in that,, make and produce induced current in the workpiece to above-mentioned each described high frequency heating coil supply high frequency electric current.
High frequency heating coil of the present invention, linearity portion all is continuous, does not have crackle, therefore, the temperature deviation of axial region is little.
Therefore, even the bent axle that the interval of wall component parts is narrow as the bent axle of V-type engine and flat opposed h type engine h, the length of axial region is short also can fully heat up necessity part, heat treatment such as can suitably quench.
In addition, the heating means of workpiece too, even the short bent axle of the length of axial region also can fully heat up necessity part, heat treatment such as can suitably quench.
Description of drawings
Fig. 1 is the stereogram of the high frequency heating coil of embodiment of the present invention;
Fig. 2 is the stereogram of the high frequency heating coil of another execution mode of the present invention;
Fig. 3 is the present invention's stereogram of the high frequency heating coil of another execution mode again;
Fig. 4 (a) is the stereogram of the high frequency heating coil of another execution mode of the present invention, (b) is its plane graph;
Fig. 5 (a) is the stereogram of the high frequency heating coil of another execution mode of the present invention, (b) is its plane graph;
Fig. 6 is the stereogram of the high frequency heating coil of another execution mode of the present invention;
Fig. 7 is the stereogram of bent axle;
Solid line is the stereogram of the high frequency heating coil of prior art among Fig. 8, and double dot dash line is the part of bent axle;
Fig. 9 is the stereogram from the high frequency heating coil of the observed Fig. 8 of dorsal part;
Figure 10 is the key diagram of the quenching pattern of expression when using the high frequency heating coil of Fig. 8 that axial region is quenched;
Figure 11 is the key diagram of quenching pattern of the superheat state of the each several part of expression when using the high frequency heating coil of Fig. 8 that axial region is quenched;
Figure 12 is the key diagram of quenching pattern of the superheat state of the each several part of expression when using the high frequency heating coil of Fig. 8 that axial region is quenched.
Embodiment
Below, embodiments of the present invention are described.
The high frequency heating coil 20 of present embodiment is identical with above-mentioned high frequency heating coil, is the coil that the axial region 3 to bent axle quenches.
The high frequency heating coil 20 of present embodiment is the coil of the semi-open type that forms of the conductive component by tubulose, is connected in series with the first circular-arc conductive part 25, the first linearity conductive part, 26, the second circular-arc conductive part 27, the second linearity conductive part 28, three-arc shape conductive part 29 between two power supplies 21,22.
The first circular-arc conductive part 25 and three-arc shape conductive part 29 roughly are in same plane.The plane that the plane that the first circular-arc conductive part 25 and three-arc shape conductive part 29 constitute and the second circular-arc conductive part 27 constitute is in opposed position.
The curve that the first circular-arc conductive part 25 and the 3rd ring-type conductive part 29 constitute is the following circular curves of 180 degree.In addition, the curve that the second circular-arc conductive part 27 constitutes also is the following circular curves of 180 degree, is the circular curve about 120 degree in the present embodiment.
Preferred 100 degree of the circular arc that the first circular-arc conductive part 25 and three-arc shape conductive part 29 etc. constitute～180 degree degree, but also can be for below it.
The equal in length of the first linearity conductive part 26 and the second linearity conductive part 28, the plane parallel that the plane that the first circular-arc conductive part 25 and three-arc shape conductive part 29 constitute and the second circular-arc conductive part 27 constitute.
The high frequency heating coil 20 of present embodiment has first circular-arc 30 of the row that are made of the first circular-arc conductive part 25 and three-arc shape conductive part 29 and the secondary series that is made of the second circular-arc conductive part 27 circular-arc 31.That is, the high frequency heating coil 20 of present embodiment possesses circular-arc 30,31 of two row.
In addition, the high frequency heating coil 20 of present embodiment utilizes the terminal part of the first linearity conductive part 26 and the first circular-arc conductive part 25 and the top portion of the second circular-arc conductive part 27 to form the first linearity portion 32.In addition, utilize the terminal part of the second linearity conductive part 28 and the second circular-arc conductive part 27 and the top portion of three-arc shape conductive part 29 to form the second linearity portion 33.That is, the high frequency heating coil 20 of present embodiment possesses two row linearity portions 32,33.
In addition, the length of linearity portion 32,33 is shorter than circular-arc 30,31 length.Variation described later is also identical.
In addition, two row linearity portions 32,33 all are continuous, do not have crackle, have the length of crossing over high frequency heating coil 20 total lengths.That is, when considering to comprise circular-arc 30 the imaginary circle 40 of first row and comprising circular-arc 31 of secondary series imaginary circle 41, two row linearity portions 32,33 all report to the leadship after accomplishing a task with two imaginary circle 40,41.
Shown in Fig. 1,3,4,5, the high frequency heating coil 20 of present embodiment is the coil that the axial region 3 to bent axle quenches, when bent axle is quenched, high frequency heating coil 20 from loam cake on the axial region 3 of bent axle, to supply with high-frequency current.
In the high frequency heating coil 20 of present embodiment, because two row linearity portions 32,33 do not have the space, thus can be by the middle body of two row linearity portions, 32,33 heating axial regions 3, the temperature deviation of axial region 3 is little.
In the embodiment described above, circular-arc 30 of high frequency heating coil 20,31 angle are about 120 degree, but the invention is not restricted to this formations, also can be that high frequency heating coil shown in Figure 2 45 such less thaies 45 are spent (be 30 spend about) among the figure.
In addition, in the embodiment described above, dispose two power supplies 21,22, but high frequency heating coil 46 that also can be as shown in Figure 3 is such, and power supply 47,48 is collected in circular-arc 49 end at one circular-arc 30 middle body.
For high frequency heating coil shown in Figure 3 46, power supply 47 is connected to the top portion of the first circular-arc conductive part 50.And, terminal part at the first circular-arc conductive part 50 is connected with the first linearity conductive part 51, terminal part at the first linearity conductive part 51 is connected with the second circular-arc conductive part 52, and is connected with the second linearity conductive part 53 at the terminal part of the second circular-arc conductive part 52.Another power supply 48 also erects from the second linearity conductive part 53.
The terminal of the second linearity conductive part 53 arrives the plane identical with the lateral surface 55 of the first circular-arc conductive part 50.That is, for the second linearity conductive part 53, when the imaginary circle 57 of considering to comprise circular-arc 49 of the first circular-arc conductive part 50, report to the leadship after accomplishing a task with imaginary circle 57 with the linearity portion 58 that the second linearity conductive part 53 forms.
Therefore, for high frequency heating coil shown in Figure 3 46, when the imaginary circle 60 of the circular-arc portion that considers to comprise circular-arc 49 the imaginary circle 57 of first row and comprise secondary series, two row linearity portions 58,61 all report to the leadship after accomplishing a task with two imaginary circle 57,60.
In addition, be to increase the quantity of linearity portion, also can above-mentioned high frequency heating coil 20,46 on same circumference row arrangement also.
Among Fig. 4, with above-mentioned high frequency heating coil 46 on same circumference and row arrangement.High frequency heating coil 63 shown in Figure 4 is coils that two high frequency heating coil 46a, 46b are formed side by side, and two groups of power supplies 47,48 are disposed at the same side.The coil of high frequency heating coil 63 for two one-turn coil are formed side by side shown in Figure 4 is connected in series two one-turn coil electricity, constitutes a high frequency heating coil 63.In the present embodiment, power supply 47 is connected by bonding conductor 54 with power supply 48, and two high frequency heating coil 46a, 46b connect into one.Here, the method for attachment of two high frequency heating coil 46a, 46b is arbitrarily, power supply 47 can be connected to each other, and also power supply 48 can be connected to each other.Following execution mode is also identical.
Relative with it, high frequency heating coil 65 shown in Figure 5 is for to be disposed at the not example of homonymy with two groups of power supplies 47,48.About high frequency heating coil shown in Figure 5 65, by bonding conductor 54 power supply 48 is connected to each other, two high frequency heating coil 46a, 46b are connected into one.
In addition, each above-mentioned high frequency heating coil 20,46,63,65 has all shown the state that conductive part strips out, but also can be identical with known high frequency heating coil, at the position of necessity iron core is installed.
The state of iron core 70,71,72,73 has been installed by the four row linearity portions that Fig. 6 is illustrated in high frequency heating coil shown in Figure 5 65.
Claims (10)
1. a semi-open type high frequency heating coil is characterized in that, above linearity portion and the plural power supply of two row that has the above circular-arc portion of two row, reports to the leadship after accomplishing a task with described circular-arc part, wherein,
Utilize described circular-arc and linearity portion that the described axial region of workpiece with axial region is carried out high-frequency heating,
The length of described linearity portion is shorter than the length of circular-arc portion,
The circular-arc portion of at least two row is in opposed position, and the above linearity portion of two row all is continuous, does not have crackle, reports to the leadship after accomplishing a task with two imaginary circle that comprise the circular-arc portion of described two row in its two ends.
2. high frequency heating coil as claimed in claim 1, it is characterized in that, have circular-arc of two row and the above linearity portion of two row, via a row linearity portion end of the circular-arc portion of two row is connected to each other, the end of another a row linearity portion and a circular-arc portion is continuous, the position of end abutment of another distolateral arrival and the circular-arc portion that is in opposed locations.
3. high frequency heating coil as claimed in claim 1 is characterized in that power supply all is connected in circular-arc portion.
4. high frequency heating coil as claimed in claim 1 is characterized in that at least one power supply is connected in the end of at least one linearity portion.
5. high frequency heating coil as claimed in claim 1 is characterized in that, circular-arc is the following circular arcs of 180 degree.
6. high frequency heating coil as claimed in claim 1 is characterized in that portion is provided with iron core at linearity.
7. a high frequency heating coil is characterized in that, the described high frequency heating coil of claim 1 that possesses the following circular-arc portion of 90 degree is disposing more than two on the same circumference.
8. a high frequency heating coil is characterized in that, the described high frequency heating coil electricity of claim 1 is connected in series more than two, constitutes a coil.
9. high frequency heating coil, it is characterized in that, the described high frequency heating coil electricity of claim 1 is connected in series two, constitute a coil, the power supply of a high frequency heating coil is in a circular-arc portion, and the power supply of another high frequency heating coil is in another circular-arc portion.
10. the heating means of a workpiece is characterized in that, each described high frequency heating coil supply high frequency electric current makes and produces induced current in the workpiece in claim 1～9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102060576A CN102045907A (en) | 2009-10-20 | 2009-10-20 | High frequency heating coil and heating method for workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102060576A CN102045907A (en) | 2009-10-20 | 2009-10-20 | High frequency heating coil and heating method for workpiece |
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| Publication Number | Publication Date |
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| CN102045907A true CN102045907A (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102060576A Pending CN102045907A (en) | 2009-10-20 | 2009-10-20 | High frequency heating coil and heating method for workpiece |
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| CN (1) | CN102045907A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216679A (en) * | 2016-08-30 | 2016-12-14 | 江苏共昌轧辊股份有限公司 | A kind of U-shaped medium frequency induction heater of reaction-injection moulding lithosomic body |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04255690A (en) * | 1991-02-06 | 1992-09-10 | Fuji Denshi Kogyo Kk | High frequency induction heating coil |
| JPH09291314A (en) * | 1996-04-25 | 1997-11-11 | Fuji Denshi Kogyo Kk | Spacer holder for heating coil for crank shaft and heating coil for crank shaft |
| JPH10219356A (en) * | 1997-02-06 | 1998-08-18 | Fuji Denshi Kogyo Kk | High frequency induction heating coil body |
| JPH11172324A (en) * | 1997-12-15 | 1999-06-29 | Fuji Denshi Kogyo Kk | Induction heating coil for crank shaft |
| JP2000329504A (en) * | 1999-05-18 | 2000-11-30 | Fuji Electronics Industry Co Ltd | Coil gap measuring device |
| JP2001115211A (en) * | 1999-10-15 | 2001-04-24 | Fuji Electronics Industry Co Ltd | Induction hardening device for shaft-like work and induction hardening method |
| CN200987225Y (en) * | 2006-11-29 | 2007-12-05 | 深圳市宝安联华实业有限公司 | Two semi-part closed handgrip type medium high frequency induction heating coil device |
| JP4132888B2 (en) * | 2002-03-12 | 2008-08-13 | 富士電子工業株式会社 | Crankshaft hardening coil |
-
2009
- 2009-10-20 CN CN2009102060576A patent/CN102045907A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04255690A (en) * | 1991-02-06 | 1992-09-10 | Fuji Denshi Kogyo Kk | High frequency induction heating coil |
| JPH09291314A (en) * | 1996-04-25 | 1997-11-11 | Fuji Denshi Kogyo Kk | Spacer holder for heating coil for crank shaft and heating coil for crank shaft |
| JPH10219356A (en) * | 1997-02-06 | 1998-08-18 | Fuji Denshi Kogyo Kk | High frequency induction heating coil body |
| JPH11172324A (en) * | 1997-12-15 | 1999-06-29 | Fuji Denshi Kogyo Kk | Induction heating coil for crank shaft |
| JP2000329504A (en) * | 1999-05-18 | 2000-11-30 | Fuji Electronics Industry Co Ltd | Coil gap measuring device |
| JP2001115211A (en) * | 1999-10-15 | 2001-04-24 | Fuji Electronics Industry Co Ltd | Induction hardening device for shaft-like work and induction hardening method |
| JP4132888B2 (en) * | 2002-03-12 | 2008-08-13 | 富士電子工業株式会社 | Crankshaft hardening coil |
| CN200987225Y (en) * | 2006-11-29 | 2007-12-05 | 深圳市宝安联华实业有限公司 | Two semi-part closed handgrip type medium high frequency induction heating coil device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216679A (en) * | 2016-08-30 | 2016-12-14 | 江苏共昌轧辊股份有限公司 | A kind of U-shaped medium frequency induction heater of reaction-injection moulding lithosomic body |
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Application publication date: 20110504 |