CN103991040B - A kind of processing method of engine valve shaping CBN emery wheels - Google Patents

A kind of processing method of engine valve shaping CBN emery wheels Download PDF

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Publication number
CN103991040B
CN103991040B CN201410212283.6A CN201410212283A CN103991040B CN 103991040 B CN103991040 B CN 103991040B CN 201410212283 A CN201410212283 A CN 201410212283A CN 103991040 B CN103991040 B CN 103991040B
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cbn
engine valve
grinding
emery
base body
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CN103991040A (en
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赵东辉
于彦
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Zhengzhou Zhong Bang Sintered Carbide Tools Co Ltd
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Zhengzhou Zhong Bang Sintered Carbide Tools Co Ltd
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Abstract

The invention discloses a kind of processing method of engine valve shaping CBN emery wheels, including the step such as grinding wheel base body preparation, grinding wheel base body semifinishing, grinding wheel base body finishing, the plating of CBN abrasive materials;CBN is as a kind of superhard material, the characteristic of itself causes the loss very little in grinding process, sharpness can be kept, it need not be repaired in process, processing efficiency and service life are enhanced about more than once than profile milling cutter wheel, improved more than twice than common corundum emery wheel, the deviation of initial workpiece and last part is can be controlled within 0.005mm during batch machining, the present invention is by high precision digital control lathe come the excircle configuration of processing grinding wheel matrix, can being changed between different molded line profiles with convenience and high-efficiency, production cost is significantly reduced, shortens the production cycle.

Description

A kind of processing method of engine valve shaping CBN emery wheels
Technical field
The present invention relates to the process technology of super-hard abrasive tool in grinding materials and grinding tool industry, and in particular to a kind of engine valve shaping The processing method of CBN emery wheels.
Background technology
Valve is the important component of engine, the reliability and effect that the processing precision direct influence of valve works to engine Rate.Currently used processing method has:Numerical control smart car method and shaping grinding method.Form grinding emery wheel include common corundum emery wheel and New electroplating CBN emery wheel.
Electroplating CBN emery wheel is molded using cubic boron nitride as abrasive material, this abrasive material is the superhard material that hardness is only second to diamond, It not only has many good characteristics of diamond, and has higher heat endurance and to iron group metal and its chemistry of alloy Inertia, fatigue strength of the workpiece to be machined in grinding process can be effectively reduced, increase workpiece service life, and self-sharpening is good, mill Cut sharp, be not easily blocked and burn workpiece, is adapted to high-speed grinding.CBN abrasive materials by galvanoplastic be fixedly arranged at by Precision Machining into In the steel matrix of type, hard grinding can be carried out to steel part or ironcasting, and can be very good to keep form accuracy.Due to Upper characteristic, using key positions such as shaping electroplating CBN wheel grinding valve collet groove ﹑ outer cone faces ends, can effectively it protect The precision and uniformity of valve are demonstrate,proved, greatly improves processing efficiency, is had a clear superiority compared to conventional method and bright prospects.
The content of the invention
It is an object of the invention to provide a kind of adding for the engine valve that stability is good, grinding accuracy is high shaping CBN emery wheels Work method.
Technical scheme:A kind of processing method of engine valve shaping CBN emery wheels, comprises the following steps:
A, grinding wheel base body prepares:Using metal forging part, embryo material roughing, quenching and tempering hardness is HRC28~32, Ageing Treatment The defects of ensuring flawless and sand holes by flaw detection afterwards;
B, grinding wheel base body semifinishing:Counterbore is uniformly processed in both ends of the surface after the smart car of forge piece half, grinding machine processes Both ends of the surface and endoporus, it is stand-by;
C, grinding wheel base body finishes:Grinding wheel base body after grinding is fastened on the fixture of high precision digital control lathe, Effect hole bounce≤0.002mm, end face run-out≤0.005mm, then fine turning outer circle profile, each smart car of both ends of the surface goes out >=3mm Step, and excircle configuration clamped one time are machined, and matrix excircle configuration and form and position tolerance are detected with three coordinate detectors;
D, coating:It is using plating metal principle by deposition of the metallic bond on grinding wheel base body surface, CBN abrasive materials is equal It is even to be fixedly arranged on grinding wheel base body excircle configuration;
E, emery wheel clamping correction on numerically controlled lathe after electroplating, high rotating speed is ground profiling sample block, with three coordinate detectors To detect sample block profile, then need to repair emery wheel local polishing if any deviation;
F, the emery wheel trimmed does dynamic balancing and reaches G0.4 standards, gets product.
Further, the step a medium plain emery wheels matrix is prepared using materials such as 45 Gang ﹑ 40Cr ﹑ 35CrMo.
Further, the step b medium plain emery wheel both ends of the surface depth of parallelism requirement≤0.005mm, roughness Ra value≤0.8 μm, Circularity requirement≤0.002mm of endoporus, roughness Ra value≤0.8 μm.
Further, finishing wheel matrix profile tolerance requirement≤0.005mm, rough grinding wheel matrix profile in the step c Spend requirement≤0.02mm.
Further, metallic bond uses nickel alloy in the step d.
Further, the embedment rate of CBN particles is controlled between 30~50% in the step d.
Further, the step e medium plain emery wheels are ground profiling sample block with > 3000r/min speed.
The present invention is also provided a kind of engine valve prepared using the above method and is molded CBN emery wheels, including emery wheel body, The emery wheel body outer circumferential end face is provided with the first mill with valve discone antenna surface, air valve cervix and engine valve stem form fit Face, described this body side surface of emery wheel are provided with the second flour milling that can be ground valve retainer end.
Preferably, described this body side surface of emery wheel is additionally provided with the bevel grinding face that can be ground valve retainer end-beveling.
As further preferred, described this body side surface of emery wheel is provided with annular groove, and the emery wheel body side surface circumference is provided with Connect the straight trough of annular groove.
As further preferred, this body side surface of emery wheel outer rim sets oblique angle X, and the oblique angle X angles are 3~10 °.
Beneficial effects of the present invention:
(1) for CBN as a kind of superhard material, the characteristic of itself causes the loss very little in grinding process, can keep sharp Property, it need not repair in process, processing efficiency and service life are enhanced about more than once than profile milling cutter wheel, compare common corundum Emery wheel is improved more than twice, and the deviation of initial workpiece and last part is can be controlled within 0.005mm during batch machining.
(2) steel matrix that CBN emery wheels use high intensity is molded, maximum linear velocity is up to 150m/s, plating metal bonding agent It is also very firm to the hold of abrasive material, it is adapted to high-speed grinding, rotating speed is higher, and grinding quality and efficiency are higher, the surface of workpiece Roughness Ra value can reach 0.4 μm, and in the case of grinding amount L T.LT.LT 1mm, plain wheel takes around more than 15s, and electroforming CBN emery wheels only need 2~5s.
(3) present invention can be existed by high precision digital control lathe come the excircle configuration of processing grinding wheel matrix with convenience and high-efficiency Changed between different molded line profiles, significantly reduce production cost, shorten the production cycle.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention wherein One embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also basis These accompanying drawings obtain other accompanying drawings.
Fig. 1 is partial structural diagram of the present invention;
Fig. 2 is the structural representation of invention wheel grinding valve part;
Fig. 3 is the structural representation of invention wheel grinding valve part;
In figure:1- emery wheels body, 2- straight troughs, 3- annular grooves, 4- bevel grindings face, 51- valves discone antenna surface, 52- air valve cervixes, 53- Engine valve stem, 54- valve retainers end, 55- valve retainer end-bevelings.
Embodiment
To make those skilled in the art understand the methods and techniques effect of the present invention in detail, entered below with specific embodiment One step introduces application and the technique effect of the present invention.
Embodiment 1
A kind of processing method of engine valve shaping CBN emery wheels, comprises the following steps:
A, grinding wheel base body prepares:Grinding wheel base body uses 45 steel forging forging pieces, and quenching and tempering hardness is HRC28~32, after Ageing Treatment The defects of ensuring flawless and sand holes by flaw detection;
B, grinding wheel base body semifinishing:According to practical condition after the smart car of forge piece half, uniformly processed in both ends of the surface Going out through hole, grinding machine processes both ends of the surface and endoporus, stand-by, emery wheel both ends of the surface depth of parallelism requirement≤0.005mm, roughness Ra value≤ 0.8 μm, circularity requirement≤0.002mm of endoporus, roughness Ra value≤0.8 μm;
C, grinding wheel base body finishes:Grinding wheel base body after grinding is fastened on the fixture of high precision digital control lathe, Effect hole bounce≤0.002mm, end face run-out≤0.005mm, then fine turning outer circle profile, finishing wheel matrix profile tolerance require ≤ 0.005mm, rough grinding wheel matrix profile tolerance requirement≤0.02mm, each smart car of both ends of the surface goes out >=3mm step, and excircle configuration Clamped one time is machined, and matrix excircle configuration and form and position tolerance are detected with three coordinate detectors;
D, coating:It is using plating metal principle by deposition of the metallic bond on grinding wheel base body surface, CBN abrasive materials is equal Even to be fixedly arranged on grinding wheel base body excircle configuration, the embedment rate of CBN particles is controlled between 35~40%;
E, emery wheel clamping correction on numerically controlled lathe after electroplating, is ground profiling sample block with > 3000r/min speed, uses Three coordinate detectors detect sample block profile, then need if any deviation to repair emery wheel local polishing;
F, the emery wheel trimmed does dynamic balancing and reaches G0.4 standards, gets product.
Embodiment 2
A kind of processing method of engine valve shaping CBN emery wheels, comprises the following steps:
A, grinding wheel base body prepares:Grinding wheel base body uses 40Cr forge pieces, and quenching and tempering hardness is HRC28~32, after Ageing Treatment The defects of ensuring flawless and sand holes by flaw detection;
B, grinding wheel base body semifinishing:According to practical condition after the smart car of forge piece half, uniformly processed in both ends of the surface Going out through hole, grinding machine processes both ends of the surface and endoporus, stand-by, emery wheel both ends of the surface depth of parallelism requirement≤0.005mm, roughness Ra value≤ 0.8 μm, circularity requirement≤0.002mm of endoporus, roughness Ra value≤0.8 μm;
C, grinding wheel base body finishes:Grinding wheel base body after grinding is fastened on the fixture of high precision digital control lathe, Effect hole bounce≤0.002mm, end face run-out≤0.005mm, then fine turning outer circle profile, finishing wheel matrix profile tolerance require ≤ 0.005mm, rough grinding wheel matrix profile tolerance requirement≤0.02mm, each smart car of both ends of the surface goes out >=3mm step, and excircle configuration Clamped one time is machined, and matrix excircle configuration and form and position tolerance are detected with three coordinate detectors;
D, coating:It is using plating metal principle by deposition of the metallic bond on grinding wheel base body surface, CBN abrasive materials is equal Even to be fixedly arranged on grinding wheel base body excircle configuration, the embedment rate of CBN particles is controlled between 45~50%;
E, emery wheel clamping correction on numerically controlled lathe after electroplating, is ground profiling sample block with > 3000r/min speed, uses Three coordinate detectors detect sample block profile, then need if any deviation to repair emery wheel local polishing;
F, the emery wheel trimmed does dynamic balancing and reaches G0.4 standards, gets product.
Embodiment 3
A kind of processing method of engine valve shaping CBN emery wheels, comprises the following steps:
A, grinding wheel base body prepares:Grinding wheel base body uses 35CrMo forge pieces, and quenching and tempering hardness is HRC28~32, Ageing Treatment The defects of ensuring flawless and sand holes by flaw detection afterwards;
B, grinding wheel base body semifinishing:According to practical condition after the smart car of forge piece half, uniformly processed in both ends of the surface Going out through hole, grinding machine processes both ends of the surface and endoporus, stand-by, emery wheel both ends of the surface depth of parallelism requirement≤0.005mm, roughness Ra value≤ 0.8 μm, circularity requirement≤0.002mm of endoporus, roughness Ra value≤0.8 μm;
C, grinding wheel base body finishes:Grinding wheel base body after grinding is fastened on the fixture of high precision digital control lathe, Effect hole bounce≤0.002mm, end face run-out≤0.005mm, then fine turning outer circle profile, finishing wheel matrix profile tolerance require ≤ 0.005mm, rough grinding wheel matrix profile tolerance requirement≤each smart car of 0.02mm both ends of the surface goes out >=3mm step, and excircle configuration Clamped one time is machined, and matrix excircle configuration and form and position tolerance are detected with three coordinate detectors;
D, coating:It is using plating metal principle by deposition of the metallic bond on grinding wheel base body surface, CBN abrasive materials is equal Even to be fixedly arranged on grinding wheel base body excircle configuration, the embedment rate of CBN particles is controlled between 40~45%;
E, emery wheel clamping correction on numerically controlled lathe after electroplating, is ground profiling sample block with > 3000r/min speed, uses Three coordinate detectors detect sample block profile, then need if any deviation to repair emery wheel local polishing;
F, the emery wheel trimmed does dynamic balancing and reaches G0.4 standards, gets product.
Embodiment 4
A kind of engine valve prepared according to the methods described of embodiment 1~3 is molded CBN emery wheels, as shown in Figures 1 to 3, bag Emery wheel body 1 is included, the outer circumferential end face of emery wheel body 1 is provided with and valve discone antenna surface 51, air valve cervix 52 and engine valve stem First flour milling of 53 form fits, the side of emery wheel body 1 are provided with the second flour milling that can be ground valve retainer end 54.
As the preferred scheme of the present embodiment, the side of emery wheel body 1, which is also provided with that valve retainer end can be ground, falls The bevel grinding face 4 at angle 55.
As the further preferred scheme of the present embodiment, the side of emery wheel body 1 can set up annular groove 3, the emery wheel body 1 Side surface circumference can set up the straight trough 2 of connection annular groove 3.The depth and width of the annular groove are 2~4mm;The depth of the straight trough For 2~4mm, width is 4~8mm.The design of annular groove and straight trough, a large amount of chips can be effectively discharged, substantially reduce wheel topography Probability, improve wheel life, grinding fluid can be conveyed in place again, really play a part of the sliding ﹑ coolings of profit, avoid valve Burn, ensure that grinding quality.
As the further preferred scheme of the present embodiment, the also settable oblique angle X of the side outer rim of emery wheel body 1.Valve The diameter of disk end is generally 30~80mm of ∮, because valve and emery wheel make gyration, the side grinding area ring width of emery wheel simultaneously Its radius size must be more than, could be by cross grinding in place.Grinding process is that longitudinal primary feed is completed, and grinding wheel side face is easy Hit by valve retainer end, cause abrasive material to come off, due to abrasive material and valve retainer end bump contact, grinding fluid is difficult infiltration To grinding position, situations such as easily causing blocking and the workpiece burn of emery wheel, side peripheral edge portion processing of the present embodiment in emery wheel Go out an X oblique angles transition, oblique angle with grinding wheel cylindrical circular sliding slopes, solves the problems, such as that emery wheel is knocked so that grinding process again Smooth-going is carried out.
The technical scheme provided above the embodiment of the present invention is described in detail, specific case used herein The principle and embodiment of the embodiment of the present invention are set forth, the explanation of above example is only applicable to help and understands this The principle of inventive embodiments;Meanwhile for those of ordinary skill in the art, according to the embodiment of the present invention, in specific embodiment party There will be changes in formula and application, in summary, this specification content should not be construed as limiting the invention.

Claims (6)

1. a kind of engine valve is molded CBN emery wheels, including emery wheel body (1), emery wheel body (1) outer circumferential end face is set There is the first flour milling with valve discone antenna surface (51), air valve cervix (52) and engine valve stem (53) form fit, it is characterised in that:Institute State emery wheel body (1) side and be provided with the second flour milling that can be ground valve retainer end (54), emery wheel body (1) side is set There is annular groove (3), emery wheel body (1) side surface circumference is provided with the straight trough (2) of connection annular groove (3), the depth of the annular groove (3) It is 2~4mm with width;The depth of the straight trough (2) is 2~4mm, and width is 4~8mm, outside emery wheel body (1) side Edge sets oblique angle X, and the oblique angle X angles are 3~10 °, and the processing method of the engine valve shaping CBN emery wheels is including following Step:
A, grinding wheel base body prepares:Using metal forging part, embryo material roughing, quenching and tempering hardness is HRC28~32, is passed through after Ageing Treatment Crossing flaw detection ensures flawless and sand holes defect;
B, grinding wheel base body semifinishing:Counterbore is uniformly processed in both ends of the surface after the smart car of matrix embryo material half, grinding machine processes two End face and endoporus, it is stand-by;
C, grinding wheel base body finishes:Grinding wheel base body after grinding is fastened on the fixture of high precision digital control lathe, effect Hole bounce≤0.002mm, end face run-out≤0.005mm, then fine turning outer circle profile, each smart car of both ends of the surface goes out >=3mm step, Machined with excircle configuration clamped one time, matrix excircle configuration and form and position tolerance are detected with three coordinate detectors;
D, coating:It is using plating metal principle by deposition of the metallic bond on grinding wheel base body surface, CBN abrasive materials is uniformly solid Knot is on grinding wheel base body excircle configuration;
E, emery wheel clamping correction on numerically controlled lathe after electroplating, is ground profiling sample block with > 3000r/min rotating speed, is sat with three Detector is marked to detect sample block profile, then needs to repair emery wheel local polishing if any deviation;
F, the emery wheel trimmed does dynamic balancing and reaches G0.4 standards, gets product.
2. engine valve according to claim 1 is molded CBN emery wheels, it is characterised in that:Emery wheel body (1) side The bevel grinding face (4) of valve retainer end-beveling (55) can be ground by being provided with.
3. engine valve according to claim 1 is molded CBN emery wheels, it is characterised in that:The engine valve shaping Step a medium plain emery wheels matrix in the processing method of CBN emery wheels is prepared using 45 steel ﹑ 40Cr or 35CrMo materials.
4. engine valve according to claim 1 is molded CBN emery wheels, it is characterised in that:The engine valve shaping Step b medium plain emery wheel both ends of the surface depth of parallelisms requirement≤0.005mm in the processing method of CBN emery wheels, roughness Ra value≤0.8 μm, Circularity requirement≤0.002mm of endoporus, roughness Ra value≤0.8 μm.
5. engine valve according to claim 1 is molded CBN emery wheels, it is characterised in that:The engine valve shaping Metallic bond uses nickel alloy in step d in the processing method of CBN emery wheels.
6. engine valve according to claim 1 is molded CBN emery wheels, it is characterised in that:The engine valve shaping The embedment rate of CBN particles is controlled between 30~50% in step d in the processing method of CBN emery wheels.
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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105458871A (en) * 2015-11-13 2016-04-06 西安航空动力股份有限公司 Engine rotor integral blade disk and blade tip processing method
CN111300209A (en) * 2019-12-23 2020-06-19 重庆跃进机械厂有限公司 Valve grinding method
CN112757175A (en) * 2020-12-25 2021-05-07 郑州磨料磨具磨削研究所有限公司 Superhard grinding wheel with composite structure and manufacturing method thereof
CN113510632B (en) * 2021-08-09 2022-05-20 郑州众邦超硬工具有限公司 CBN (cubic boron nitride) formed grinding wheel for grinding steering gear inner cavity stator and machining method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201399725Y (en) * 2009-05-04 2010-02-10 郑州宏拓超硬材料制品有限公司 Novel high-speed cam grinding vitrified bond CBN grinding wheel
CN102009390A (en) * 2009-09-04 2011-04-13 沈阳中科超硬磨具磨削研究所 Electroforming high-precision profiling grinding wheel and preparation process thereof
CN102941382A (en) * 2012-11-26 2013-02-27 大连理工大学 Molding grinding wheel for grinding small-hole threads of hard and brittle materials
CN103273404A (en) * 2013-06-06 2013-09-04 萍乡市德博科技发展有限公司 Method for machining variable-section nozzle ring blade of turbocharger

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW503161B (en) * 2000-01-19 2002-09-21 Mitsubishi Materials Corportio Apparatus and method for making electro-depositted grinding stone
JP4767548B2 (en) * 2005-02-07 2011-09-07 株式会社ディスコ Electrodeposition whetstone and method of manufacturing electrodeposition whetstone

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201399725Y (en) * 2009-05-04 2010-02-10 郑州宏拓超硬材料制品有限公司 Novel high-speed cam grinding vitrified bond CBN grinding wheel
CN102009390A (en) * 2009-09-04 2011-04-13 沈阳中科超硬磨具磨削研究所 Electroforming high-precision profiling grinding wheel and preparation process thereof
CN102941382A (en) * 2012-11-26 2013-02-27 大连理工大学 Molding grinding wheel for grinding small-hole threads of hard and brittle materials
CN103273404A (en) * 2013-06-06 2013-09-04 萍乡市德博科技发展有限公司 Method for machining variable-section nozzle ring blade of turbocharger

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
200m/s电镀CBN超高速砂轮的设计与制造;宋贵亮等;《金刚石与磨料磨具工程》;20000215(第01期);全文 *
新型砂轮的发展与应用;叶伟昌等;《精密制造与自动化》;20030825(第03期);全文 *
电镀CBN砂轮缓进给磨削高温合金叶片窄深槽的试验研究;康仁科等;《航空制造技术》;19991120(第06期);第3-4节 *
电镀CBN磨具制造中的一些问题的研究;于宁,吕玉山,王军;《机械设计与制造》;19960228(第01期);全文 *

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