CN108788639B - A kind of processing technology of camshaft stand centre bore - Google Patents
A kind of processing technology of camshaft stand centre bore Download PDFInfo
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- CN108788639B CN108788639B CN201810605692.0A CN201810605692A CN108788639B CN 108788639 B CN108788639 B CN 108788639B CN 201810605692 A CN201810605692 A CN 201810605692A CN 108788639 B CN108788639 B CN 108788639B
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- camshaft stand
- degree
- centre bore
- processing technology
- camshaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses a kind of processing technologys of camshaft stand centre bore, include the following steps: the heat treatment of 2) material: the camshaft stand in step 1) being put into high temperature box type resistance furnace and carries out hardening step, and cool time control was at 60 minutes, hardening heat controls between 800 degree to 900 degree, high tempering is carried out later, and the control of high tempering time was at 30 minutes, high tempering temperature controls between 400 degree to 600 degree, it is finally putting into hardening media and is rapidly cooled operation, and is after taking-up that its surface wipes are clean；3) roughing of material: the camshaft stand in step 2 is put into progress clip positioning operation in numerically-controlled machine tool, later rough turn outer circle and Rough turn end face at punching, and process deep 5 millimeters of 60 degree of taper holes with drill bit；The processing technology of the camshaft stand centre bore, design rationally, are easily manipulated, while having the characteristics that machining accuracy height and good product quality.
Description
Technical field
The present invention relates to camshaft stand centre bore technical field, specially a kind of processing work of camshaft stand centre bore
Skill.
Background technique
Camshaft is an important component in piston engine, its effect is to control the unlatching and closure of valve.Though
So in four-stroke engine, the revolving speed of camshaft is the half of crankshaft, but its revolving speed is still very high, and needs to bear
Very big torque.Therefore, very high for requirement of the centre bore in camshaft stand in terms of intensity and support, and camshaft branch
The material of frame is generally superior alloy steel.Since valve motion rule is related to the power and service performance of an engine, make
Camshaft stand centre bore is obtained in process in occupation of highly important status.
But in the processing technology of existing camshaft stand centre bore, there are machining accuracy is low and poor product quality is asked
Topic.And material is usually unprocessed before processing, it is easier that the deformation in process is excessive and causes machining accuracy by shadow
It rings, while can be too low because of the rigidity and fatigue strength of material, and influences the product quality after processing.
Therefore, design that a kind of machining accuracy is high and the processing technology of the camshaft stand centre bore of good product quality is that have very much
It is necessary.
Summary of the invention
The purpose of the present invention is to provide a kind of processing technologys of camshaft stand centre bore, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme: a kind of processing technology of camshaft stand centre bore,
Include the following steps:
1) selection of material: using surface flawless, without protrusion recess and camshaft stand without rusty stain as the material processed
Material；
2) heat treatment of material: the camshaft stand in step 1) is put into high temperature box type resistance furnace and carries out quenching behaviour
Make, and cool time control, at 60 minutes, hardening heat controls between 800 degree to 900 degree, carries out high tempering later, and
At 30 minutes, high tempering temperature controlled between 400 degree to 600 degree the control of high tempering time, was finally putting into hardening media
In be rapidly cooled operation, and it is after taking-up that its surface wipes are clean；
3) roughing of material: being put into progress clip positioning operation in numerically-controlled machine tool for the camshaft stand in step 2,
Rough turn outer circle and Rough turn end face at punching later, and deep 5 millimeters of 60 degree of taper holes are processed with drill bit；
4) the destressing processing of material: the camshaft stand in step 3) is placed on vibrating motor and carries out the fixed behaviour of clip
Make, and the exciting force of vibrating motor is modulated into 8000N, and working time control can be taken off at 2 hours；
5) finishing of material: being put into progress clip positioning operation in numerically-controlled machine tool for the camshaft stand in step 4),
The plane groove for processing 2 millimeters of depth at deep 5 millimeters of 60 degree taper holes later, carries out drilling operation later, and to drill hole
Stop-spraying does not spill coolant liquid, until drilling terminates, it is finally that its surface wipes are clean, and then sanding operation is carried out with polishing paper, until
Overlap and burr completely remove；
6) Nitrizing Treatment of material: being put into progress nitriding operation in well formula nitriding furnace for the camshaft stand in step 5),
And in nitriding operation, it is passed through ammonia thereto, and working time control, at 6 hours, operating temperature is controlled at 450 degree to 550
Between degree, and after nitriding operation, continue to input the ammonia progress cold operation of furnace, and when temperature is between 120 to 170 degree
When, it can come out of the stove；
7) ultrasonic examination the inspection and preservation of material: is carried out to camshaft stand obtained in step 6) and its centre bore
The lossless camshaft stand for accomplishing fluently centre bore, is put into dustfree environment is saved later by detection operation.
According to the above technical scheme, the high temperature box type resistance furnace in the step 2 is a kind of SX2-12-12 type high-temperature cabinet
Formula resistance furnace.
According to the above technical scheme, the hardening media in the step 2 is the poly- second of mass fraction 0.1%-0.3% a kind of
Enol aqueous solution.
According to the above technical scheme, the drill bit in the step 3) is a kind of WC wolfram steel centre drill.
According to the above technical scheme, the vibrating motor in the step 4) is a kind of XJD-100-2 type vibrating motor.
According to the above technical scheme, the well formula nitriding furnace in the step 6) is a kind of RN-75-6K type well formula nitriding furnace.
According to the above technical scheme, the coolant liquid in the step 5) is water-soluble for the mixing of a kind of suds and nitrite
Liquid.
According to the above technical scheme, the position that nitriding is not required in the step 6) is uniformly coated with the anti-nitriding of FSN-1 type and applies
Material.
Compared with prior art, the beneficial effects of the present invention are: it is of the invention, it first chooses surface flawless, be recessed without protrusion
Camshaft stand with no rusty stain is as the raw material processed, in order to avoid influencing processing quality, carries out hardening step and high temperature later
Tempering operation, considerably increases its thermohardening, then puts it into progress clip positioning operation in numerically-controlled machine tool, thick at punching
Turning and Rough turn end face, and deep 5 millimeters of 60 degree of taper holes are processed with drill bit, the precision of following process is helped to improve, it
After be put on vibrating motor progress destressing operation, enhance the fatigue strength of its own, then put it into numerically-controlled machine tool again
Clip positioning operation is carried out, processes deep 2 millimeters of plane groove at deep 5 millimeters of 60 degree of taper holes later, then drill
Operation improves machining accuracy, then carries out polishing behaviour with polishing paper to reduce the collision and friction that occur when machining center hole
Make, improve finish, carry out nitriding operation to it later, and be capable of forming fine and close stabilized zone on surface, corrosion resistance is high, makes
It is long with the service life, after finally carrying out carrying out flaw detection to camshaft stand and its centre bore again, it is put into dustfree environment and stores, it is whole
A processing technology, design is rationally, easily operated, and unified mass production and marketing is suitble to use.
Detailed description of the invention
Fig. 1 is a kind of processing process figure of camshaft stand centre bore of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment: it referring to Fig. 1, the present invention provides a kind of processing technology of camshaft stand centre bore, including walks as follows
It is rapid:
1) surface flawless, raw material of the camshaft stand as processing without protrusion recess and without rusty stain are chosen；
2) hardening step first is carried out to the camshaft stand in 1), carries out high tempering later, is finally putting into mass fraction
It is rapidly cooled operation in hardening media for the polyvinyl alcohol water solution of 0.1%-0.3%, and wipes its surface after taking-up
It wipes clean；
3) camshaft stand in 2) is first put into progress clip positioning operation in numerically-controlled machine tool, it is rough turn at punching later
Outer circle and Rough turn end face, and deep 5 millimeters of 60 degree of taper holes are processed with WC wolfram steel centre drill；
4) 3) camshaft stand in is placed on progress clip fixed operation on XJD-100-2 type vibrating motor, beaten later
XJD-100-2 type vibrating motor is opened, destressing operation is carried out to camshaft stand；
5) camshaft stand in 4) is first put into progress clip positioning operation in numerically-controlled machine tool, later at deep 5 millimeters
Process deep 2 millimeters of plane groove at 60 degree of taper holes, then carry out drilling operation, and to drill hole not stop-spraying spill by suds and
Nitrite mixed aqueous solution composition coolant liquid, until drilling terminate, it is finally that its surface wipes are clean, then with polish paper
Carry out sanding operation；
6) nitriding operation is carried out to the camshaft stand in 5), and is passed through ammonia thereto, after nitriding operation, after
Continuous input ammonia carries out the cold operation of furnace, and when temperature is between 120 to 170 degree, can come out of the stove；
7) ultrasonic examination detection operation first is carried out to camshaft stand obtained in 6) and its centre bore, will accomplished fluently later
The lossless camshaft stand of centre bore, which is put into dustfree environment, to be saved.
Based on above-mentioned, it is an advantage of the current invention that first choosing surface flawless, the camshaft without protrusion recess and without rusty stain
Raw material of the bracket as processing carry out hardening step and high tempering operation to it later, make it in order to avoid influencing processing quality
Thermohardening greatly increases, and waits dangerous situations in order to avoid accident occurs when processing and breaks, then carries out fast quickly cooling to it with hardening media
But operate, then after taking-up its surface wipes are clean, camshaft stand is put into numerically-controlled machine tool progress clip positioning later
Operation, then rough turn outer circle and Rough turn end face at punching, and deep 5 millimeters of 60 degree of taper holes are processed, convenient for improving following process
Precision, camshaft stand is put on vibrating motor progress destressing operation later, greatly enhances the fatigue strength of its own,
Then progress clip positioning operation in numerically-controlled machine tool is put it into again, processes deep 2 milli at deep 5 millimeters of 60 degree of taper holes later
The plane groove of rice, then drilling operation is carried out, to reduce the collision and friction that occur when machining center hole, machining accuracy is improved,
And coolant liquid is constantly injected in boring procedure, it takes out later and its surface wipes are clean, then carry out polishing behaviour with polishing paper
Make, improve finish, puts it into progress nitriding operation in RN-75-6K type well formula nitriding furnace later, and be passed through ammonia thereto
Gas continues to input the ammonia progress cold operation of furnace, and when temperature is between 120 to 170 degree, i.e., after nitriding operation
It can come out of the stove, and the camshaft stand surface after nitridation forms fine and close stabilized zone, corrosion resistance is high, long service life, finally again
After carrying out carrying out flaw detection to camshaft stand and its centre bore, it is put into dustfree environment and stores, entire processing technology, design
Rationally, easily operated, it is suitble to unified mass production and marketing to use.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of processing technology of camshaft stand centre bore, characterized by the following steps:
1) selection of material: using surface flawless, without protrusion recess and camshaft stand without rusty stain as the material processed；
2) heat treatment of material: the camshaft stand in step 1) being put into high temperature box type resistance furnace and carries out hardening step, and
At 60 minutes, hardening heat was controlled between 800 degree to 900 degree for cool time control, carried out high tempering later, and high temperature returns
At 30 minutes, high tempering temperature was controlled between 400 degree to 600 degree, is finally putting into hardening media and carries out for fiery time control
It is quickly cooled down operation, and after taking-up that its surface wipes are clean；
3) roughing of material: the camshaft stand in step 2 is put into progress clip positioning operation in numerically-controlled machine tool, later
Rough turn outer circle and Rough turn end face at punching, and deep 5 millimeters of 60 degree of taper holes are processed with drill bit；
4) the destressing processing of material: being placed on progress clip fixed operation on vibrating motor for the camshaft stand in step 3),
And the exciting force of vibrating motor is adjusted to 8000N, and working time control can be taken off at 2 hours；
5) finishing of material: the camshaft stand in step 4) is put into progress clip positioning operation in numerically-controlled machine tool, later
Deep 2 millimeters of plane groove is processed at deep 5 millimeters of 60 degree of taper holes, carries out drilling operation later, and do not stop to drill hole
Coolant liquid is sprayed, until drilling terminates, it is finally that its surface wipes are clean, then sanding operation is carried out with polishing paper, until overlap
It is completely removed with burr；
6) Nitrizing Treatment of material: the camshaft stand in step 5) being put into well formula nitriding furnace and carries out nitriding operation, and
When nitriding operates, be passed through ammonia thereto, and working time control is at 6 hours, operating temperature control 450 degree to 550 degree it
Between, and after nitriding operation, continue to input the ammonia progress cold operation of furnace, and when temperature is between 120 to 170 degree,
It can come out of the stove；
7) ultrasonic examination detection the inspection and preservation of material: is carried out to camshaft stand obtained in step 6) and its centre bore
The lossless camshaft stand for accomplishing fluently centre bore, is put into dustfree environment is saved later by operation.
2. a kind of processing technology of camshaft stand centre bore according to claim 1, it is characterised in that: in the step 2
High temperature box type resistance furnace is a kind of SX2-12-12 type high temperature box type resistance furnace.
3. a kind of processing technology of camshaft stand centre bore according to claim 1, it is characterised in that: in the step 2
Hardening media is the polyvinyl alcohol water solution of mass fraction 0.1%-0.3% a kind of.
4. a kind of processing technology of camshaft stand centre bore according to claim 1, it is characterised in that: in the step 3)
Drill bit is a kind of WC wolfram steel centre drill.
5. a kind of processing technology of camshaft stand centre bore according to claim 1, it is characterised in that: in the step 4)
Vibrating motor is a kind of XJD-100-2 type vibrating motor.
6. a kind of processing technology of camshaft stand centre bore according to claim 1, it is characterised in that: in the step 6)
Well formula nitriding furnace is a kind of RN-75-6K type well formula nitriding furnace.
7. a kind of processing technology of camshaft stand centre bore according to claim 1, it is characterised in that: in the step 5)
Coolant liquid is the mixed aqueous solution of a kind of suds and nitrite.
8. a kind of processing technology of camshaft stand centre bore according to claim 1, it is characterised in that: in the step 6) not
The position of nitriding is needed uniformly to be coated with FSN-1 type antinitriding paint.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810605692.0A CN108788639B (en) | 2018-06-13 | 2018-06-13 | A kind of processing technology of camshaft stand centre bore |
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| CN201810605692.0A CN108788639B (en) | 2018-06-13 | 2018-06-13 | A kind of processing technology of camshaft stand centre bore |
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| CN108788639B true CN108788639B (en) | 2019-11-26 |
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| CN114193093A (en) * | 2021-12-06 | 2022-03-18 | 深圳市玉沣科技有限公司 | Precision machining method for semiconductor moving slide seat |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10162109C1 (en) * | 2001-12-18 | 2003-05-22 | Meteor Umformtechnik Gmbh | Production of an annular cam for a camshaft of an internal combustion engine comprises perforating a sheet steel strip, embossing the punched burr on the outlet of the perforating tool |
| CN102189376B (en) * | 2011-03-22 | 2013-03-06 | 南车戚墅堰机车有限公司 | Novel cam shaft machining process |
| CN202053130U (en) * | 2011-04-15 | 2011-11-30 | 成都市西菱汽车配件有限责任公司 | Special clamp for camshaft grinding |
| CN103223577B (en) * | 2013-05-03 | 2015-05-20 | 天津市天瑞硬化工程有限公司 | Anti-fatigue manufacturing method of spiral bevel gear |
| CN103433709B (en) * | 2013-08-28 | 2016-10-05 | 宁波富莱茵汽车部件有限公司 | The processing technique of camshaft |
| CN104439936A (en) * | 2014-11-06 | 2015-03-25 | 无锡市百顺机械厂 | Machining technology of camshaft |
| CN105458717A (en) * | 2015-12-15 | 2016-04-06 | 苏州爱盟机械有限公司 | Machining technology for cam shaft of automobile engine |
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