CN102766751B - Process method for quenching rotary support gear - Google Patents

Process method for quenching rotary support gear Download PDF

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CN102766751B
CN102766751B CN201210243890.XA CN201210243890A CN102766751B CN 102766751 B CN102766751 B CN 102766751B CN 201210243890 A CN201210243890 A CN 201210243890A CN 102766751 B CN102766751 B CN 102766751B
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quenching
workpiece
inductor
gear
inductive head
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CN102766751A (en
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李云虎
唐华峰
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Anhui Qiankun Heavy Industry Machinery Co., Ltd
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ANHUI XUANCHENG QIANKUN SLEWING BEARING Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The invention discloses a process method for quenching a rotary support gear. The method comprises the main steps of carrying out rough turning, finishing turning, gear shaping, quenching and tempering on an inner ring and an outer ring of the rotary support gear; an inductor of a quenching device for quenching adopts a medium frequency quenching inductor; the quenching liquid is PGA (polyglycolic acid) quenching liquid; the quenching device comprises a rotary workbench; one side of the rotary workbench is provided with a fixing base capable of vertically moving; a slide base that moves horizontally is erected on a horizontal side plate on one side of the fixing base; the slide base is fixedly provided with a transformer for driving the medium frequency quenching inductor and assisting a localizing guide rod to operate; the induction head on the front end part of the medium frequency quenching inductor is trapezoidal; a coupling gap between the induction head and the dental groove corresponding to the induction head is reserved when the induction head matches with the dental groove corresponding to the induction head; in the quenching process, the process parameters such as the coupling gap between the medium frequency quenching inductor and the dental groove, the entering depth of the current, the speed of the dental groove line, the temperature and the concentration of the quenching liquid are set and regulated; and, the method provided by the invention enhances the quenching quality, and is particularly suitable for the quenching need of the rotary support gear made of the material 50 Mn or the material 42 CrMo and with the module of gear more than 6.

Description

A kind of processing method of rotating bearing gear quenching
Technical field
The invention belongs to rotating bearing processing and manufacturing field, relate in particular to a kind of processing method of rotating bearing gear quenching.
Background technology
The development that rotating bearing industry has experienced more than 30 years in China, JB2300-84 < < rotating bearing form, basic parameter and the technical requirements > > standard from 1984, issued first, and the JB/T2300-1999 < < rotating bearing > > standard of revising in 1999, existing China has possessed perfect rotating bearing design, the comprehensive exploitation ability of Computer-Assisted Design, Manufacture And Test.Simultaneously different industries has proposed the standard of oneself to rotating bearing page, and as wind-power electricity generation, building machinery, bearing industry etc., product progresses into refinement, competition situation wide in variety as can be seen here.
At present, on market, consumption maximum is the supporting of single four-point contact ball slewing, and roller seating space diameter accounts for the overwhelming majority wherein between Φ 500~Φ 1500mm; Nowadays, along with the development of engineering machinery, special purpose vehicle and industrial robot etc., particularly wind-power electricity generation industry is grown up at a high speed, and quality, novelty to product are had higher requirement.But high precision, the high-end rotating bearing market that the life-span is long, weathering resistance is strong are still controlled by external traditional enterprise, annual domestic a large amount of these type of rotating bearings of import that all need, domestic enterprise all faces the severe challenge of technological innovation.
Pivoting support bearing is actually the novel high-strength bearing that can play connection, transmission, than common bearing, aspect the form of the load of bearing, ability, is having distinctive feature, can bear larger axially, the combined load such as radial load and upsetting moment.Pivoting support bearing is generally with open holes, internal wheel or outer rotor, oil passage and tightness system, can make host design compact construction, install simple, long service life, its type of belt drive is mainly take gear transmission mode as main, what generally match therewith is pinion(gear), load suffered during revolution will be processed by gear gear motion, and Gear Contact Surface is line contact in theory, with regard to monodentate, the load ratio that the flank of tooth bears is more concentrated, particularly irregular rotatablely moving frequently, the shock load producing, make strength of gear state very severe, serious meeting causes direct geared to fracture, this be also rotating bearing use heavy-duty machinery (as tower crane, excavator, ship machinery, wind power generating set etc.) there is a principal element of equipment failure, the factor of considering during except design, how to meet the desired technical parameter of design, meeting of established technology process capability is just extremely important, and in existing cogged quenching technology, be difficult to meet the desired technical parameter of design.
Summary of the invention
Invention provides a kind of processing method of rotating bearing gear quenching, by the coupling gap between intermediate frequency inductor and roller seating space in quenching process, the depth of current penetration, roller seating space linear velocity, setting and the adjustment of the processing parameters such as the temperature of hardening liquid and concentration, improved quenching quality, avoided quenching roller seating space face to occur fine cracks, the serious workpiece that causes is scrapped, in use procedure simultaneously, PAG hardening liquid can run off with workpiece, oxygenolysis, and impurity, greasy dirt, tap water contains material etc. and adds, all formed the impact on concentration, with refractometer detect data will lack verity, thereby affect the problems such as roller seating space quality.
Technical scheme of the present invention is as follows:
A kind of processing method of rotating bearing gear quenching, its master operation is that inner ring and the outer ring to rotating bearing carried out respectively rough turn, finish turning, gear shaping, quench and tempering, it is characterized in that: the inductor block in the quenching apparatus in described quenching adopts medium frequency quenching inductor block, hardening liquid is PAG hardening liquid, in quenching apparatus, include rotation work seat stand, described rotary table one side is provided with vertically moving permanent seat, the added slide moving horizontally that is provided with of horizontal side plate of described permanent seat one side, on described slide, be installed with and drive medium frequency quenching inductor block, the inductive head of described medium frequency quenching inductor block leading section is trapezoidal, the roller seating space that described inductive head is corresponding with it should leave coupling space while coordinating, the inductive head of described assist location guide rod and medium frequency quenching inductor block leading section is arranged side by side, and be all fixedly mounted on the fixed link that slide stretches out,
Its concrete technology step of utilizing above-mentioned quenching apparatus to quench is as follows:
(1), first treat the kinematic accuracy of quenching workpiece, the position of intermediate frequency inductor moves, to treat that quenching workpiece lies on rotary table, by numerical-control motor control rotary table, do the stroboscopic motion that precision is higher, thereby control the kinematic accuracy with quenching workpiece, movement by slide on horizontal side plate, the vertical movement of permanent seat, realized the regulation and control of intermediate frequency inductor position.
(2), will treat that quenching workpiece is clean clean, must not residual process residue and other dirt settling, greasy dirt, in lifting on quenching apparatus, lay appropriate after, with the cylindrical diameter run-out of centimeter check workpiece, within beating and being controlled at 0.1mm, with symmetrical 4 workpiece pressings of pressing plate, before being installed at every turn, workpiece also to clean worktable;
(3), adjust the inductive head of medium frequency quenching inductor block and treat the gap between quenching workpiece roller seating space, spacing between the inductive head of the frequency quenching inducer that in detecting with clearance gauge, roller seating space is mated, coupling gap h3 between bottom and its corresponding tooth root position of control inductive head, the size of the coupling gap size h4 of tooth top position corresponding to the coupling gap h5 of the roller seating space position corresponding with it, the both sides of inductive head and inductive head top, as: the coupling gap h5 that controls roller seating space position corresponding to the both sides of coupling gap h3 between the tooth root position corresponding with it, the bottom of inductive head and inductive head is not affected by modulus, generally get h3=1.5~2mm, h5=1.25~1.5mm, and the coupling gap size h4 of the tooth top position corresponding with it, inductive head top needs according to treating that the module of gear of quenching workpiece determines,
(4), by thermometer, monitor the temperature of adjusting PAG hardening liquid, by cooling tower, PAG quench fluid temperature is controlled to 40 ± 10 ℃, by refractometer, coordinate viscometry, actual concentration assay method to detect PAG hardening liquid concentration, by adding water that concentration is controlled to 9 ± 1% in PAG hardening liquid;
(5), adjust mid-frequency quenching equipment induction frequencies and voltage, electric current output parameter, the operating frequency of intermediate frequency inductor depends on depth of hardening, the depth of current penetration of generally getting is 2 times of depth of hardening zone, rotating bearing flank of tooth depth of hardening is 3~5mm, calculated rate scope is at 7~2.5KHz, and concrete value is relevant according to quenching temperature, generally speaking with regard to gear ring simultaneously, quenching mode is interrupted, intermediate frequency inductor is after heating quenching, to pass through worktable rotary, adopt the mode circulating quenching of interval 2~3 teeth, this Recycle design can arrange by equipment digital control scheme, in process, coordinate the assist location guide rod in quenching apparatus, can guarantee the rear position consistency of profile of tooth relatively of each quenching inducer rotation, and because intermediate frequency inductor motion neither continuously and smoothly, consider gear self state of temperature before and after quenching, therefore intermediate frequency inductor starts before the end face of tooth, to stop 2~3 seconds, give workpiece preheating, then with uniform speed, about the speed of 1.5mm/s left and right, quench greatly, exit end stops 1 second left and right time,
(6) after all roller seating spaces of, treating quenching workpiece according to step (5) quench, check quenching hardness and appearance quality, carry out initial workpiece processing after qualified, initial workpiece detects rear and can be mass, in batch production process, note per tour process parameter record, with statistical analysis technique, progressively control process processing parameter, quenches within latter 10 hours and must carry out temper, 190 ± 10 ℃ of tempering temperatures, be incubated 2 hours, air cooling, again check.
Described the modified of quenching workpiece or the normalizing hardness 210-260HB for the treatment of, flank of tooth quenching hardness is between 50~56HRC, flank of tooth depth of hardening zone h=3~5mm, tooth root depth of hardening zone h1 is not less than 1.5mm ] roughness for the treatment of quenching workpiece roller seating space in gear finish turning is 3.2-1.6.
Principle of the present invention is: tooth base material is 50Mn or 42CrMo conventionally, modified or normalizing hardness 210-260HB, flank of tooth quenching hardness between 50~56HRC, flank of tooth depth of hardening zone h=3~5mm (with design relevant), tooth root depth of hardening zone h1 is not less than 1.5mm.Affect that the cogged material of the principal element of gear quenching quality requires, roughness (working accuracy), the relative position of the precision of the clamping of gear, the shape of inductor block and workpiece, Heating temperature, the parameter of moving along roller seating space; The selection of hardening liquid, control.
For rotating bearing material, except macroscopic irregularity control and quenching and tempering hardness test, importantly the metallurgical analysis of the detection exemplar macrostructure of workpiece, contrasts contrast, controls the formation of metal metallographic crystal grain, for basic preparation is carried out in the medium frequency quenching in later stage; Secondly, control the impact of roughness, roughness height easily causes quenching face to occur fine cracks, and the serious workpiece that causes is scrapped, and requires thus roughness to be preferably controlled at 3.2-1.6 left and right, and the last one moulding process cutting output of Gear Processing is little.And after requiring after Gear Processing, want the dirt settling such as iron filings, oil plant of deburring and workpiece surface, holding workpiece clean.
The shape of intermediate frequency inductor and position.Intermediate frequency inductor heating is to utilize electrical equipment principle of induction, treating that on quenching workpiece surface, producing induced current is eddy current, under the effect of workpiece self-resistance, electric energy energy transform into heat energy, with regard to the section physical dimension of inductor block, consider sharp angle effect, surface action, inductor block must leave certain distance h 4 from gear top, the clearance distance is here very crucial, the surface to volume ratios different along flank profil need corresponding different inductive energy, here roller seating space gap h3 and backlash h5, not affected by modulus, generally get h3=1.5~2mm, backlash h5 is at pitch circle place, generally get h5=1.25~1.5mm, and inductor block is associated larger with the modulus of top clearance of tooth h4 and gear, cannot treat different things as the same, substantially as following table is set:
Modulus m 6 ~12 14~20 22~32 34~48 50~
h4(mm) 2.8~3.2 3.4~3.8 4~5 5~7 ≥8
The operating frequency of inductor block depends on depth of hardening, and the depth of current penetration of generally getting is 2 times of depth of hardening zone, and rotating bearing flank of tooth depth of hardening is 3~5mm, and calculated rate scope is at 7~2.5KHz, and concrete value is relevant according to quenching temperature;
The motion requirement of Heating temperature and inductor block motion.The feature of heating in medium frequency is that rate of heating is fast, the metallographic structure of metallic substance changes also fast, and the austenite crystal of gained is also thinner, thus also high 2~3HRC of hardness that the hardness ratio common heating obtaining is quenched, martensite is tiny, and wear resistance and fatigue strength also improve greatly.Because the material of gear is by modified or normalizing, material structure crystal grain is thinner, and general selective quenching temperature is selected 920 ± 20 ℃ substantially; With regard to gear ring generally speaking, quenching mode is interrupted.Inductor block is after heating quenching, to pass through worktable rotary, the monodentate starting next time quenches, for causing heat transmission, the cooling deficiency of the gear teeth that prevents from closing on produces tempering phenomenon, adopt the mode circulating quenching of interval 2~3 teeth, this Recycle design can arrange by equipment digital control scheme, simple.With regard to single tooth, inductor block motion neither continuously and smoothly, consider gear self state of temperature before and after quenching, inductor block starts before the end face of tooth, to stop 2~3 seconds, give workpiece preheating, then with uniform speed, quench greatly about the speed of 1.5mm/s left and right, exit end stops 1 second left and right time, object is to guarantee that roller seating space can obtain quenching temperature, prevents that soft band from producing.
The control of hardening liquid.Hardening liquid has basic impact on the hardness of quenching and quenching defect as crackle, distortion, hardness deficiency (hickie), the PAG that most producer is used, this is a kind of multipolymer by oxyethane and propylene oxide, when temperature raises, polyethers solubleness can decline on the contrary, and even from water, separates out (this is called contrary dissolubility).Polyether aqueous solution is homogeneous transparent solution at normal temperatures, and when cloud point is arrived in temperature rise, solution is just from the transparent muddiness that becomes.When temperature continues to rise to contrary fusing point, the linear macromolecule of polyethers will be separated out from water, and completely separation with water.When polyethers concentration increases, in quenching process, can form deposited film at workpiece surface, play a part thermofin, speed of cooling is declined.The thickness of deposited film depends on polyethers concentration.Therefore the speed of cooling of polyethers solution can regulate.The existence of deposited film makes heat radiation more even, thereby can eliminate soft spots, and reduces the internal stress of workpiece, prevents workpiece deformation.In the time of below quenching temperature drops to contrary fusing point, the polyethers of having separated out again can be again water-soluble.The process parameter control of PAG hardening liquid: 1, temperature: the temperature of hardening liquid need to have thermometer to monitor, its use temperature scope is narrower, is generally 40 ± 10 ℃, and supporting equipment needs to carry out temperature control (cooling or heating) and stirs simultaneously; 2, concentration control: in use procedure PAG can run off with workpiece, oxygenolysis, and impurity, greasy dirt, tap water contain material etc. and add, all formed the impact on concentration, with refractometer detect data will lack verity, can coordinate the content of viscosimetry, actual concentration method of masurement (sampling heating and separating) Comprehensive Control PAG component, general concentration is controlled at 9 ± 1%.Strengthen workpiece cleaning before treatment simultaneously, increase the service life.
Beneficial effect of the present invention:
The present invention is by setting and the adjustment of the processing parameters such as the temperature to the coupling gap between intermediate frequency inductor and roller seating space, the depth of current penetration, roller seating space linear velocity, hardening liquid and concentration, improved quenching quality, being particularly suitable for material is 50Mn or 42CrMo, the quenching requirement that module of gear is greater than 6.
Accompanying drawing explanation
Fig. 1 is quenching apparatus structural representation.
Fig. 2 is location guide and inductive head and roller seating space fit structure schematic diagram.
Fig. 3 is the gear fire bed schematic diagram that hardens.
Fig. 4 is roller seating space quenching hardness layer schematic diagram.
Embodiment
Referring to accompanying drawing: a kind of processing method of rotating bearing gear quenching, its master operation is that inner ring and the outer ring to rotating bearing carried out respectively rough turn, finish turning, gear shaping, quench and tempering, inductor block in quenching apparatus in quenching adopts medium frequency quenching inductor block, hardening liquid is PAG hardening liquid, in quenching apparatus, include rotation work seat stand 5, rotary table 5 one sides are provided with vertically moving permanent seat 11, the added slide 10 moving horizontally that is provided with of horizontal side plate of permanent seat 11 1 sides, on slide 10, be installed with the transformer 9 that drives medium frequency quenching inductor block 7 and assist location guide rod 8 to move, the inductive head 12 of medium frequency quenching inductor block 7 leading sections is trapezoidal, the roller seating space 4 that inductive head 12 is corresponding with it should leave coupling space while coordinating, assist location guide rod 8 is arranged side by side with the inductive head of medium frequency quenching inductor block leading section, and be all fixedly mounted on the fixed link 13 that slide stretches out,
Its concrete technology step of utilizing above-mentioned quenching apparatus to quench is as follows:
(1), first treat the kinematic accuracy of quenching workpiece, the position of intermediate frequency inductor moves, to treat that quenching workpiece lies on rotary table, by numerical-control motor control rotary table, do the stroboscopic motion that precision is higher, thereby control the kinematic accuracy with quenching workpiece, movement by slide on horizontal side plate, the vertical movement of permanent seat, realized the regulation and control of intermediate frequency inductor position.
(2), will treat that quenching workpiece is clean clean, must not residual process residue and other dirt settling, greasy dirt, in lifting on quenching apparatus, lay appropriate after, with the cylindrical diameter run-out of centimeter check workpiece, within beating and being controlled at 0.1mm, with symmetrical 4 workpiece pressings of pressing plate, before being installed at every turn, workpiece also to clean worktable;
(3), adjust the inductive head of medium frequency quenching inductor block and treat the gap between quenching workpiece roller seating space, spacing between the inductive head of the frequency quenching inducer that in detecting with clearance gauge, roller seating space is mated, coupling gap h3 between bottom and its corresponding tooth root position of control inductive head, the size of the coupling gap size h4 of tooth top position corresponding to the coupling gap h5 of the roller seating space position corresponding with it, the both sides of inductive head and inductive head top, as: the coupling gap h5 that controls roller seating space position corresponding to the both sides of coupling gap h3 between the tooth root position corresponding with it, the bottom of inductive head and inductive head is not affected by modulus, generally get h3=1.5~2mm, h5=1.25~1.5mm, and the coupling gap size h4 of the tooth top position corresponding with it, inductive head top needs according to treating that the module of gear of quenching workpiece determines,
(4), by thermometer, monitor the temperature of adjusting PAG hardening liquid, by cooling tower, PAG quench fluid temperature is controlled to 40 ± 10 ℃, by refractometer, coordinate viscometry, actual concentration assay method to detect PAG hardening liquid concentration, by adding water that concentration is controlled to 9 ± 1% in PAG hardening liquid;
(5), adjust mid-frequency quenching equipment induction frequencies and voltage, electric current output parameter, the operating frequency of intermediate frequency inductor depends on depth of hardening, the depth of current penetration of generally getting is 2 times of depth of hardening zone, rotating bearing flank of tooth depth of hardening is 3~5mm, calculated rate scope is at 7~2.5KHz, and concrete value is relevant according to quenching temperature, generally speaking with regard to gear ring simultaneously, quenching mode is interrupted, intermediate frequency inductor is after heating quenching, to pass through worktable rotary, adopt the mode circulating quenching of interval 2~3 teeth, this Recycle design can arrange by equipment digital control scheme, in process, coordinate the assist location guide rod in quenching apparatus, can guarantee the rear position consistency of profile of tooth relatively of each quenching inducer rotation, and because intermediate frequency inductor motion neither continuously and smoothly, consider gear self state of temperature before and after quenching, therefore intermediate frequency inductor starts before the end face of tooth, to stop 2~3 seconds, give workpiece preheating, then with uniform speed, about the speed of 1.5mm/s left and right, quench greatly, exit end stops 1 second left and right time,
(6) after all roller seating spaces of, treating quenching workpiece according to step (5) quench, check quenching hardness and appearance quality, carry out initial workpiece processing after qualified, initial workpiece detects rear and can be mass, in batch production process, note per tour process parameter record, with statistical analysis technique, progressively control process processing parameter, quenches within latter 10 hours and must carry out temper, 190 ± 10 ℃ of tempering temperatures, be incubated 2 hours, air cooling, again check.
Described the modified of quenching workpiece or the normalizing hardness 210-260HB for the treatment of, flank of tooth quenching hardness is between 50~56HRC, flank of tooth depth of hardening zone h=3~5mm, tooth root depth of hardening zone h1 is not less than 1.5mm ] roughness for the treatment of quenching workpiece roller seating space in gear finish turning is 3.2-1.6.

Claims (2)

1. the processing method of a rotating bearing gear quenching, its master operation is that inner ring and the outer ring to rotating bearing carried out respectively rough turn, finish turning, gear shaping, quench and tempering, it is characterized in that: the inductor block in the quenching apparatus in described quenching adopts medium frequency quenching inductor block, hardening liquid is PAG hardening liquid, in quenching apparatus, include rotation work seat stand, described rotary table one side is provided with vertically moving permanent seat, the added slide moving horizontally that is provided with of horizontal side plate of described permanent seat one side, on described slide, be provided with and drive medium frequency quenching inductor block, the inductive head of described medium frequency quenching inductor block leading section is trapezoidal, the roller seating space that described inductive head is corresponding with it should leave coupling space while coordinating, the inductive head of assist location guide rod and medium frequency quenching inductor block leading section is arranged side by side, and be all fixedly mounted on the fixed link that slide stretches out,
Its concrete technology step of utilizing above-mentioned quenching apparatus to quench is as follows:
(1), first treat the kinematic accuracy of quenching workpiece, the position of intermediate frequency inductor moves, to treat that quenching workpiece lies on rotary table, by numerical-control motor control rotary table, do the stroboscopic motion that precision is higher, thereby control the kinematic accuracy for the treatment of quenching workpiece, movement by slide on horizontal side plate, the vertical movement of permanent seat, realized the regulation and control of intermediate frequency inductor position;
(2), will treat that quenching workpiece is clean clean, must not residual process residue and other dirt settling, greasy dirt, in lifting on quenching apparatus, lay appropriate after, with the cylindrical diameter run-out of centimeter check workpiece, within beating and being controlled at 0.1mm, with symmetrical 4 workpiece pressings of pressing plate, before being installed at every turn, workpiece also to clean worktable;
(3), adjust the inductive head of medium frequency quenching inductor block and treat the gap between quenching workpiece roller seating space, spacing between the inductive head of the medium frequency quenching inductor block that in detecting with clearance gauge, roller seating space is mated, coupling gap h3 between bottom and its corresponding tooth root position of control inductive head, the size of the coupling gap size h4 of tooth top position corresponding to the coupling gap h5 of the roller seating space position corresponding with it, the both sides of inductive head and inductive head top, the coupling gap h5 that controls roller seating space position corresponding to the both sides of coupling gap h3 between the tooth root position corresponding with it, the bottom of inductive head and inductive head is not affected by modulus, get h3=1.5~2mm, h5=1.25~1.5mm, and the coupling gap size h4 of the tooth top position corresponding with it, inductive head top needs according to treating that the module of gear of quenching workpiece determines,
(4), by thermometer, monitor the temperature of adjusting PAG hardening liquid, by cooling tower, PAG quench fluid temperature is controlled to 40 ± 10 ℃, by refractometer, coordinate viscometry, actual concentration assay method to detect PAG hardening liquid concentration, by adding water that concentration is controlled to 9 ± 1% in PAG hardening liquid;
(5), adjust mid-frequency quenching equipment induction frequencies and voltage, electric current output parameter, the operating frequency of intermediate frequency inductor depends on depth of hardening, the depth of current penetration of getting is 2 times of depth of hardening zone, and rotating bearing flank of tooth depth of hardening is 3~5mm, and calculated rate scope is at 7~2.5KHz, generally speaking with regard to gear ring simultaneously, quenching mode is interrupted, intermediate frequency inductor is after heating quenching, to pass through worktable rotary, adopt the mode circulating quenching of interval 2~3 teeth, this Recycle design can arrange by equipment digital control scheme, in process, coordinate the assist location guide rod in quenching apparatus, can guarantee the position consistency of the rear relative profile of tooth of quenching inducer of each rotation, and because intermediate frequency inductor motion neither continuously and smoothly, consider gear self state of temperature before and after quenching, therefore intermediate frequency inductor starts before the end face of tooth, to stop 2~3 seconds, give workpiece preheating, then with uniform speed, in the speed of 1.5mm/s, quench, exit end stops 1 second time,
(6) after all roller seating spaces of, treating quenching workpiece according to step (5) quench, check quenching hardness and appearance quality, carry out initial workpiece processing after qualified, initial workpiece detects rear and can be mass, in batch production process, note per tour process parameter record, with statistical analysis technique, progressively control process processing parameter, quenches within latter 10 hours and must carry out temper, 190 ± 10 ℃ of tempering temperatures, be incubated 2 hours, air cooling, again check.
2. the processing method of rotating bearing gear quenching according to claim 1, is characterized in that: described
Treat the modified of quenching workpiece or normalizing hardness 210-260HB, flank of tooth quenching hardness is between 50~56HRC, flank of tooth depth of hardening zone h=3~5mm, tooth root depth of hardening zone h1 is not less than 1.5mm, and the roughness for the treatment of quenching workpiece roller seating space in gear finish turning is 3.2-1.6.
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CN104551575A (en) * 2014-12-30 2015-04-29 余鹏 Mechanical part for rotating body
CN105861791B (en) * 2016-05-18 2017-10-20 燕山大学 A kind of wind-powered electricity generation ring gear longitudinal magnetic flux induction heat treatment device
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CN109055684B (en) * 2018-08-15 2020-01-21 盐城市禾鼎机械股份有限公司 Gear non-equilibrium quenching cooling cycle and oil gas absorption device thereof
CN109097552A (en) * 2018-08-15 2018-12-28 盐城市禾鼎机械股份有限公司 A kind of unidirectional heavy-duty gear quenching apparatus
CN111575457A (en) * 2020-06-30 2020-08-25 安徽文君自动化科技有限公司 Wind-powered electricity generation slewing bearing double-tooth guenching unit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201280580Y (en) * 2008-10-28 2009-07-29 无锡革新数控科技有限公司 Gear quenching machine tool

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000282145A (en) * 1999-03-30 2000-10-10 Hitachi Constr Mach Co Ltd Method for hardening and tempering gear member and apparatus therefor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201280580Y (en) * 2008-10-28 2009-07-29 无锡革新数控科技有限公司 Gear quenching machine tool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2000-282145A 2000.10.10

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