CN108486316B - A kind of device and method of reducing type coil to heavily loaded camshaft induction heating - Google Patents
A kind of device and method of reducing type coil to heavily loaded camshaft induction heating Download PDFInfo
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- CN108486316B CN108486316B CN201810275285.8A CN201810275285A CN108486316B CN 108486316 B CN108486316 B CN 108486316B CN 201810275285 A CN201810275285 A CN 201810275285A CN 108486316 B CN108486316 B CN 108486316B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
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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
- Y02P10/25—Process efficiency
Abstract
A kind of reducing type coil mainly includes coil heats platform, coil rotating platform, coil power supply platform, connecting plate, cooling pond, support column A, support column B, pedestal, displacement sensor, station, data logger to the device of heavily loaded camshaft induction heating；It the use of method of the above-mentioned apparatus to heavily loaded camshaft induction heating is that each coil is accurately controlled in X-Y plane position by Rotation Controllers and servo motor, it is mutually matched with the position feedback of each cam bit chamfered shape information on displacement sensor automatic identification camshaft, realizes the conjugation heating effect to each cam bit on camshaft.The present invention is by controlling each independent heating coil, it is precisely matched with cam bit chamfered shape to be heated, and keep best heating spacing, reach the heating effect to traditional online variable diameter of profiling coil, the camshaft induction heating being confined to for a kind of fixed specification is improved, realizes that the heavily loaded camshaft to the big specification of diversification carries out serialization heating production.
Description
Technical field
The invention belongs to cam induction heating technique field, in particular to a kind of device and method of camshaft heating.
Background technique
Important carrier of the huge pleasure boat as marine resources and Material Transportation, for a long time low temperature, high pressure, deep-etching ocean
It is on active service in environment, wherein heavily loaded camshaft is the critical component of diesel engine, for controlling the air inlet and exhaust of cylinder, processing essence
Degree and surface quality directly affect the working performance of engine, and when camshaft works, cam face has very high periodicity to connect
Touch stress and faster relative sliding velocity, it is desirable that camshaft has enough toughness and rigidity, shock resistance and good
Wear-resisting property, and the dominant failure mode of camshaft in use is being seriously worn for fatigue fracture and cam face,
But since cam profile is complicated, it should be noted that enhancement stress concentrates position, tries to alleviate stress concentration phenomenon.Table
Face impewdance matching can make cam face generate residual compressive stress, offset a part of working tension stress, it is curved to be remarkably improved workpiece
Bent fatigue resistance and torsional fatigue drag, but cam inductor generally uses circular ring shape and profiling inductor, circular ring shape at present
When inductor heats, the micro-structure distribution of cam face is uneven, and peach tip is easy to stress concentration phenomenon occur；And profiling incudes
Costly, and there are limitation, the cam that can only be directed to specific standard carries out induction heating, can not achieve camshaft device cost
Serialization heat production, and it is very low to the processing efficiency of camshaft in industrialized production.
The patent of Publication No. 102952925B discloses a kind of cam heating quenching inductor, and Quench heating coil is by having
Coil, at least two upper and lower plates and water jacket composition are imitated, multiple cams can be heated simultaneously, compared to traditional single cam quenching sense
Device is answered to improve the uniformity of quenching hardness and depth of hardening zone, but the device is limited only to the camshaft to a kind of fixed specification
Heating, and the heating coil of the device and the gap of cam immobilize, and cannot achieve the heavily loaded cam to the big specification of diversification
Axis carries out serialization heating production.
Summary of the invention
It is an object of the invention in view of the above-mentioned problems, providing a kind of reducing type coil to heavily loaded camshaft induction heating
Device and method.The present invention mainly passes through each independent heating coil of control, accurate with cam bit chamfered shape to be heated
Matching, and best heating spacing is kept, reach the heating effect to traditional online variable diameter of profiling coil, and realize big to diversification
The heavily loaded camshaft of specification carries out serialization heating production.
Technical scheme is as follows:
The inventive system comprises coil heats platform, coil rotating platform, coil power supply platform, connecting plates, cooling water
Pond, support column A, support column B, pedestal, displacement sensor, station, data logger, camshaft lifting rotation drive platform,
In be evenly arranged on pedestal outer ring several support column A lower end and pedestal be connected, the upper end and coil rotating platform bottom are connected,
Cloth is connected in the lower end of several support column B of pedestal inner ring and pedestal, and the bottom of the upper end and cooling pond is connected, in cooling water
Above pond, coil power supply platform is fixedly connected to the inner side by connecting plate and coil heats platform, and coil power supply platform is located at coil rotation
The inside of platform and coil heats platform, station are located at beside pedestal, and displacement sensor is located at the side that station leans on pedestal,
Data logger is located at the other side of station, and camshaft lifting rotation driving platform is placed in base center, with cam to be heated
Axis forms cooperation, and camshaft is made to be placed in coil heats Platform center；
The coil heats platform includes sliding slot, servo motor, connecting shaft, rotary shaft, threaded rod, annulus platform A, wherein justifying
It is evenly distributed with 36 sliding slots on land A, is equipped with servo motor in sliding slot, one end of connecting shaft is connect with servo motor, connecting shaft
The other end and the rotation axis connection being evenly arranged on annulus platform A, it is free end that one end of threaded rod, which passes through rotary shaft, threaded rod it is another
One end is evenly arranged on the connection of the coil flexural pivot outside cam bit profile；
The coil rotating platform includes Rotation Controllers, signal connecting line, annulus platform B, wherein annulus platform B be equipped with
It is bonded in the middle part of the corresponding through-hole of rotary shaft on above-mentioned annulus platform A, through-hole and rotary shaft, each rotary shaft bottom is equipped with and it
The Rotation Controllers of connection, Rotation Controllers are connect by supporting table with annulus platform B, and Rotation Controllers controls coil rotation
Angle, and Serve Motor Control the distance of screw thread bar feed so that coil and cam bit keep suitable spacing, each rotation
It is connected by signal connecting line between controller；
The coil power supply platform includes annulus platform C, electrode tip holder, positive electrode, negative electrode, conducting wire, is wherein set on annulus platform C
Have an electrode tip holder corresponding with rotary shaft on above-mentioned annulus platform A, electrode tip holder is equipped with positive electrode and negative electrode, each electrode tip holder it
Between pass through conducting wire connect；
Each coil includes positive electrode binding post, negative electrode binding post, outlet pipe, water inlet pipe, globe joint, wherein
Positive electrode binding post and negative electrode binding post are respectively provided at the outer two sides of coil, and the two sides below each coil are respectively equipped with water inlet pipe
And outlet pipe, the both ends of outlet pipe and water inlet pipe are connect with cooling pond respectively, among positive terminal and negative terminal
Equipped with globe joint, for being connected to threaded rod.
Above-mentioned coil deposits movement in two directions, and one is the direction rotated along rotary shaft, the other is with
The direction of screw thread bar feed is to drive rotary shaft to drive by the Rotation Controllers on coil rotating platform along rotary shaft rotation
Threaded rod rotation is realized, as screw thread bar feed is to drive threaded rod movement real by the servo motor on coil heats platform
Existing, by controlling each coil in the synthesis motion profile in the two directions, coil and cam bit foreign steamer when realizing heating
Wide best heating distance；In order to realize the serialization heating of camshaft, the device is by completing the heating work to cam bit
Afterwards, by the next chamfered shape to hot cam bit of displacement sensor automatic identification, each coil and next cam are controlled
The optimum distance of piece is heated.
Using above-mentioned apparatus to the method for heavily loaded camshaft induction heating the following steps are included:
(1) camshaft lifting rotation driving platform is placed in base center, is formed and cooperated with camshaft to be heated, makes cam
Axis is placed in coil heats Platform center, and the connection of servo motor, Rotation Controllers, displacement sensor and data logger is outer
After connecing power supply, camshaft by camshaft lifting rotation drive platform driving about the z axis direction with the mistake of 85-100rad/s speed rotation
Cheng Zhong, simultaneous displacement sensor along the positive negative direction of Z axis by moving, the shape of automatic identification cam contour, and by image information
It is recorded on data logger, rotary motion and Serve Motor Control of the coil position by the control rotary shaft of Rotation Controllers
The comprehensive matching of feed motion of threaded rod determined outside cam bit one by one and according to the feedback of cam bit chamfered shape information
The best heating spacing of lateral coil, as cam bit is along Z-direction rotation during this, the position of each coil is simultaneously constantly
It adjusts, when camshaft is often from when turning around, the interval error value of each coil and cam bit reduces 2.5%- compared with the data of last time
5%, when camshaft rotation 3-4 circle, the spacing between the chamfered shape information and coil of cam bit can be with precise positioning at this time；
(2) when each coil accurately matches completely with cam bit chamfered shape, camshaft stops rotation at this time, due to convex
Taking turns piece, there are distinctive ring-around and kelvin effects for electric current in induction heating, and cam bit quenches when in order to guarantee induction heating
Hard formation depth uniformity, so the spacing of the basic circle of coil and cam bit, transition region and peach tip circle three parts has following relationship, D1
Then ﹤ D2 ﹤ D3 determines that external wire is sequentially connected positive terminal and negative terminal on each coil, guarantees each line
Water inlet pipe and outlet pipe on the voltage value of circle coil consistent and each with power frequency value, which are formed with cooling pond, to be closed
Circuit, by coil heats platform connect external power supply after, by adjust camshaft induction heating electromagnetic parameter, to cam bit into
The work of row electrified regulation, while the recirculated cooling water in water inlet pipe and outlet pipe cools down the coil in heating, with
Induction coil is protected, improves the service life of coil, minimum temperature reaches heat treatment in the depth of hardening zone needed for cam bit
At 930 DEG C of temperature, stop heating, completes the heating work to cam bit；
(3) after completing to the heating of camshaft overhead cam piece, camshaft lifting rotation driving platform can be done with drive cam shaft
Lifting and rotary motion, and next cam bit to be heated is gone up and down to after being overlapped with the center line of coil X-Y plane, it repeats
The operation content of step (1) and (2) completes the heating work to another cam bit；
(4) operating procedure for repeating step (1), (2), (3), is sequentially completed the heating to each cam bit on camshaft
Work.
The invention has the following advantages over the prior art:
1, each coil is accurately controlled in X-Y plane position, with displacement sensor by Rotation Controllers and servo motor
The position feedback of each cam bit chamfered shape information is mutually matched on automatic identification camshaft, is realized to each on camshaft
The conjugation heating effect of a cam bit.
2, the limitation for compensating for heavily loaded camshaft due to each cam bit complex contoured shape and using traditional quenching coil
Property, by controlling each independent heating coil, precisely matched with cam bit chamfered shape to be heated, and keep between most preferably heating
Away from reaching the heating effect to traditional online variable diameter of profiling coil.
3, it improves and is confined to heat for a kind of camshaft of fixed specification, broken heating coil and cam bit profile
The changeless law in gap, realize that the heavily loaded camshaft to the big specification of diversification carries out serialization heating production.
Detailed description of the invention
Fig. 1 is the general structure schematic diagram of apparatus of the present invention.
Fig. 2 is the partial structure sectional view of apparatus of the present invention.
Fig. 3 is the coil heats platform top view in apparatus of the present invention work.
Fig. 4 is the coil rotating platform top view in apparatus of the present invention work.
Fig. 5 is the coil power supply platform top view in apparatus of the present invention work.
Fig. 6 is the loop construction partial schematic diagram in apparatus of the present invention work.
Fig. 7 is the partial schematic that the coil position in making in apparatus of the present invention is adjusted.
Fig. 8 is that the camshaft and camshaft lifting rotation in apparatus of the present invention drive platform to cooperate schematic diagram.
In figure, 1- camshaft, 2- displacement sensor, 3- station, 4- data logger, 5- pedestal, 6- support column A, 7-
The cooling pond support column B, 8-, 9- connecting plate, 10- servo motor, 11- connecting shaft, 12- rotary shaft, 13- sliding slot, 14- screw thread
Bar, 15- cam bit A, 16- annulus platform A, 17- cam bit B, 18- Rotation Controllers, 19- signal connecting line, 20- annulus platform B,
21- annulus platform C, 22- electrode tip holder, 23- positive electrode, 24- negative electrode, 25- conducting wire, 26- positive electrode binding post, 27- coil, 28-
Negative electrode binding post, 29- outlet pipe, 30- water inlet pipe, 31- globe joint, 32- supporting table, the driving of 33- camshaft lifting rotation
Platform, 34- coil heats platform, 35- coil rotating platform, 36- coil power supply platform.
Specific embodiment
It is uniformly distributed in the schematic device of Fig. 1, Fig. 2 and reducing type coil shown in Fig. 8 to heavily loaded camshaft induction heating
It is connected in the lower end of several support column A6 of 5 outer ring of pedestal and pedestal, the upper end and 35 bottom of coil rotating platform are connected, uniformly distributed
It is connected in the lower end of several support column B 7 of pedestal inner ring and pedestal, the bottom of the upper end and cooling pond 8 is connected, in cooling
Above pond, coil power supply platform 36 is fixedly connected to the inner side by connecting plate 9 and coil heats platform, and coil power supply platform is located at coil
The inside of rotating platform and coil heats platform 34, station 3 are located at beside pedestal, and displacement sensor 2 is located at station the bottom of by
The side of seat, data logger 4 are located at the other side of station, and camshaft lifting rotation driving platform 33 is placed in base center, with
Camshaft 1 to be heated forms cooperation, and camshaft is made to be placed in coil heats Platform center；
As shown in figure 3, uniformly distributed 36 sliding slots 13 on annulus platform A 16 in coil heats platform, servo is equipped in sliding slot
One end of motor 10, connecting shaft 11 is connect with servo motor, the other end of connecting shaft and the rotary shaft 12 being evenly arranged on annulus platform A
Connection, it is free end that one end of threaded rod 14, which passes through rotary shaft, and the other end of threaded rod is evenly arranged on outside 15 profile of cam bit A
The connection of 17 flexural pivot of coil；Coil position is evenly distributed in outside cam bit A profile at this time, cam bit A point is basic circle, transition region and
Peach tip justifies three parts, the spacing of coil and cam bit A basic circle is D1, the spacing of coil and cam bit A transition region is D2, coil with
The spacing of cam bit A peach tip circle is D3；
As shown in figs. 4 and 7, the annulus platform B 20 in coil rotating platform is equipped with and rotary shaft on above-mentioned annulus platform A
It being bonded in the middle part of corresponding through-hole, through-hole and rotary shaft, each rotary shaft bottom is equipped with Rotation Controllers 18 connected to it,
Rotation Controllers is connect by supporting table 32 with annulus platform B, and Rotation Controllers controls the angle that coil rotates, and servo motor
The distance of screw thread bar feed is controlled, so that coil and cam bit keep suitable spacing, is led between each Rotation Controllers
Signal connecting line 19 is crossed to be connected；
As shown in figure 5, the annulus platform C 21 in coil power supply platform is equipped with corresponding with rotary shaft on above-mentioned annulus platform A
Electrode tip holder 22, electrode tip holder is equipped with positive electrode 23 and negative electrode 24, connected by conducting wire 25 between each electrode tip holder；
As shown in fig. 6, the two sides on the outside of each coil are respectively equipped with positive electrode binding post 26 and negative electrode wiring
Column 27, the two sides below each coil are respectively equipped with water inlet pipe 30 and outlet pipe 29, and the both ends of outlet pipe and water inlet pipe are distinguished
It is connect with cooling pond, globe joint 31 is equipped among positive terminal and negative terminal, for being connected to threaded rod.
Above-mentioned coil deposits movement in two directions, and one is the direction rotated along rotary shaft, the other is with
The direction of screw thread bar feed is to drive rotary shaft to drive by the Rotation Controllers on coil rotating platform along rotary shaft rotation
Threaded rod rotation is realized, as screw thread bar feed is to drive threaded rod movement real by the servo motor on coil heats platform
Existing, by controlling each coil in the synthesis motion profile in the two directions, coil and cam bit A foreign steamer when realizing heating
Wide best heating distance；In order to realize the serialization heating of camshaft, the device is by completing the heating work to cam bit A
Afterwards, by the next chamfered shape to hot cam bit B 17 of displacement sensor automatic identification, each coil and cam bit B are controlled
Optimum distance heated.
Using above-mentioned apparatus to the method for heavily loaded camshaft induction heating the following steps are included:
(1) camshaft lifting rotation driving platform is placed in base center, is formed and cooperated with camshaft to be heated, makes cam
Axis is placed in coil heats Platform center, and the connection of servo motor, Rotation Controllers, displacement sensor and data logger is outer
After connecing power supply, camshaft by camshaft lifting rotation drive platform driving about the z axis direction with the mistake of 85-100rad/s speed rotation
Cheng Zhong, simultaneous displacement sensor along the positive negative direction of Z axis by moving, the shape of automatic identification cam contour, and by image information
It is recorded on data logger, rotary motion and Serve Motor Control of the coil position by the control rotary shaft of Rotation Controllers
The comprehensive matching of feed motion of threaded rod determined outside cam bit one by one and according to the feedback of cam bit chamfered shape information
The best heating spacing of lateral coil, as cam bit is along Z-direction rotation during this, the position of each coil is simultaneously constantly
It adjusts, when camshaft is often from when turning around, the interval error value of each coil and cam bit reduces 2.5%- compared with the data of last time
5%, when camshaft rotation 3-4 circle, the spacing between the chamfered shape information and coil of cam bit can be with precise positioning at this time；
(2) when each coil accurately matches completely with cam bit chamfered shape, camshaft stops rotation at this time, due to convex
Taking turns piece, there are distinctive ring-around and kelvin effects for electric current in induction heating, and cam bit quenches when in order to guarantee induction heating
Hard formation depth uniformity, so the spacing of the basic circle of coil and cam bit, transition region and peach tip circle three parts has following relationship, D1
Then ﹤ D2 ﹤ D3 determines that external wire is sequentially connected positive terminal and negative terminal on each coil, guarantees each line
Water inlet pipe and outlet pipe on the voltage value of circle coil consistent and each with power frequency value, which are formed with cooling pond, to be closed
Circuit, by coil heats platform connect external power supply after, by adjust camshaft induction heating electromagnetic parameter, to cam bit into
The work of row electrified regulation, while the recirculated cooling water in water inlet pipe and outlet pipe cools down the coil in heating, with
Induction coil is protected, improves the service life of coil, minimum temperature reaches heat treatment in the depth of hardening zone needed for cam bit A
At 930 DEG C of temperature, stop heating, completes the heating work to cam bit A；
(3) after completing to the heating of camshaft overhead cam piece, camshaft lifting rotation driving platform can be done with drive cam shaft
Lifting and rotary motion, and next cam bit to be heated is gone up and down to after being overlapped with the center line of coil X-Y plane, it repeats
The operation content of step (1) and (2) completes the heating work to another cam bit；
(4) operating procedure for repeating (1), (2), (3), is sequentially completed the heater to each cam bit on camshaft
Make.
Claims (2)
1. a kind of reducing type coil is to the device of heavily loaded camshaft induction heating comprising coil heats platform, coil rotary flat
Platform, coil power supply platform, connecting plate, cooling pond, support column A, support column B, pedestal, displacement sensor, station, data note
Record instrument, camshaft lifting rotation drives platform, it is characterised in that: be evenly arranged on lower end and the pedestal of several support column A of pedestal outer ring
It is connected, the upper end and coil rotating platform bottom are connected, and lower end and the pedestal for being evenly arranged on several support column B of pedestal inner ring are solid
Even, the bottom of the upper end and cooling pond is connected, and above cooling pond, coil power supply platform passes through connecting plate and coil heats
Platform is fixedly connected to the inner side, and coil power supply platform is located at the inside of coil rotating platform and coil heats platform, and station is located at pedestal
Side, displacement sensor are located at the side that station leans on pedestal, and data logger is located at the other side of station, camshaft lifting
Rotation driving platform is placed in base center, is formed and is cooperated with camshaft to be heated, camshaft is made to be placed in coil heats Platform center；
The coil heats platform includes sliding slot, servo motor, connecting shaft, rotary shaft, threaded rod, annulus platform A, wherein annulus platform
Uniformly distributed 36 sliding slots on A are equipped with servo motor in sliding slot, and one end of connecting shaft is connect with servo motor, connecting shaft it is another
The rotation axis connection on annulus platform A is held and is evenly arranged on, it is free end, the other end of threaded rod that one end of threaded rod, which passes through rotary shaft,
The coil flexural pivot connection being evenly arranged on outside cam bit profile；
The coil rotating platform includes Rotation Controllers, signal connecting line, annulus platform B, wherein annulus platform B be equipped with it is above-mentioned
It is bonded in the middle part of the corresponding through-hole of rotary shaft on annulus platform A, through-hole and rotary shaft, each rotary shaft bottom, which is equipped with, to be connected thereto
Rotation Controllers, Rotation Controllers connect by supporting table with annulus platform B, and Rotation Controllers controls the angle that coil rotates
Degree, and Serve Motor Control the distance of screw thread bar feed so that coil and cam bit keep suitable spacing, each rotation is controlled
It is connected by signal connecting line between device processed；
The coil power supply platform includes annulus platform C, electrode tip holder, positive electrode, negative electrode, conducting wire, wherein annulus platform C be equipped with
The corresponding electrode tip holder of rotary shaft on above-mentioned annulus platform A, electrode tip holder are equipped with positive electrode and negative electrode, between each electrode tip holder
It is connected by conducting wire；
Each coil includes positive electrode binding post, negative electrode binding post, outlet pipe, water inlet pipe, globe joint, wherein positive electricity
Pole binding post and negative electrode binding post are respectively provided at the outer two sides of coil, and the two sides below each coil are respectively equipped with water inlet pipe and go out
The both ends of water pipe, outlet pipe and water inlet pipe are connect with cooling pond respectively, are equipped among positive terminal and negative terminal
Globe joint, for being connected to threaded rod.
2. using the device of claim 1 to the method for heavily loaded camshaft induction heating, it is characterised in that: it includes following step
It is rapid:
(1) camshaft lifting rotation driving platform is placed in base center, is formed and cooperated with camshaft to be heated, sets camshaft
External electricity is connected in coil heats Platform center, and by servo motor, Rotation Controllers, displacement sensor and data logger
Behind source, camshaft by camshaft lifting rotation drive platform driving about the z axis direction with the process of 85-100rad/s speed rotation
In, simultaneous displacement sensor along the positive negative direction of Z axis by moving, the shape of automatic identification cam contour, and image information is remembered
On data logger, coil position passes through the rotary motion of the control rotary shaft of Rotation Controllers and Serve Motor Control for record
The comprehensive matching of the feed motion of threaded rod, and according to the feedback of cam bit chamfered shape information, it determines on the outside of cam bit one by one
The best heating spacing of coil, in the process as cam bit is along Z-direction rotation, the position of each coil is constantly adjusted simultaneously for this
Section, when camshaft is often from when turning around, the interval error value of each coil and cam bit reduces 2.5%- compared with the data of last time
5%, when camshaft rotation 3-4 circle, the spacing between the chamfered shape information and coil of cam bit being capable of precise positioning at this time；
(2) when each coil accurately matches completely with cam bit chamfered shape, camshaft stops rotation at this time, due to cam bit
In induction heating, electric current is there are distinctive ring-around and kelvin effect, the quench-hardened case of cam bit when in order to guarantee induction heating
Depth uniformity, so the spacing of the basic circle of coil and cam bit, transition region and peach tip circle three parts has following relationship, D1 ﹤ D2 ﹤
D3, wherein D1 indicates the spacing of coil and cam bit basic circle, and D2 indicates the spacing of coil and cam bit transition region, and D3 indicates coil
With the spacing of cam bit peach tip circle；Then determine that external wire is sequentially connected positive terminal and negative terminal on each coil
Column, guarantee water inlet pipe on the voltage value of each coil coil consistent and each with power frequency value and outlet pipe with it is cold
But pond forms closed circuit, after coil heats platform is connected external power supply, by the electromagnetism for adjusting camshaft induction heating
Parameter carries out electrified regulation work to cam bit, while the recirculated cooling water in water inlet pipe and outlet pipe is to the coil in heating
It cools down, to protect induction coil, improves the service life of coil, it is minimum in the depth of hardening zone needed for cam bit
When temperature reaches 930 DEG C of heat treatment temperature, stop heating, completes the heating work to cam bit；
(3) after completing to the heating of camshaft overhead cam piece, camshaft lifting rotation driving platform can be gone up and down with drive cam shaft
And rotary motion, and next cam bit to be heated is gone up and down to after being overlapped with the center line of coil X-Y plane, repeat step
(1) with the operation content of (2), the heating work to another cam bit is completed；
(4) operating procedure for repeating step (1), (2), (3), is sequentially completed the heater to each cam bit on camshaft
Make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810275285.8A CN108486316B (en) | 2018-03-30 | 2018-03-30 | A kind of device and method of reducing type coil to heavily loaded camshaft induction heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810275285.8A CN108486316B (en) | 2018-03-30 | 2018-03-30 | A kind of device and method of reducing type coil to heavily loaded camshaft induction heating |
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| CN108486316B true CN108486316B (en) | 2019-07-26 |
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| CN109680139B (en) * | 2019-03-07 | 2020-06-19 | 安徽文君自动化科技有限公司 | Heat treatment device for slewing bearing outer ring raceway |
| CN112792239B (en) * | 2020-12-15 | 2021-10-19 | 燕山大学 | Hot processing device and hot processing method for curved surface part |
| CN113215366B (en) * | 2021-04-29 | 2022-02-22 | 燕山大学 | Variable-diameter induction heating device for ratchet wheel and heating method thereof |
| CN113637927A (en) * | 2021-07-16 | 2021-11-12 | 渤海造船厂集团有限公司 | Red copper straight pipe annealing device and method |
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