CN105855802B - A kind of processing method of torsion-bar spring - Google Patents
A kind of processing method of torsion-bar spring Download PDFInfo
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- CN105855802B CN105855802B CN201610291932.5A CN201610291932A CN105855802B CN 105855802 B CN105855802 B CN 105855802B CN 201610291932 A CN201610291932 A CN 201610291932A CN 105855802 B CN105855802 B CN 105855802B
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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 present invention provides a kind of processing method of torsion-bar spring, includes the following steps：The processing technology hole at the technique tail at blank both ends is heat-treated blank；Fabrication hole is located on the length face of blank；Using the fabrication hole at the technique tail of one end as starting point, the fabrication hole of cutting blank to other end technique tail, the intermediate region of blank is made to cut as sub- blank；It cuts off the technique tail at blank both ends, form independent sub- blank；It processes sub- blank and forms torsion-bar spring.During cutting in blank and to form sub- blank, the both ends of each sub- blank are still connect with technique tail, and the degree of deformation of sub- blank can be greatly reduced by the attachment force of technique tail and sub- blank, are provided conveniently for the sub- blank of following process；Meanwhile directly cut to obtain more sub- blank using larger blank using such processing method, it is remarkably improved the processing efficiency of torsion-bar spring.
Description
Technical field
The present invention relates to elastic part processing technique field, more particularly to a kind of processing method of torsion-bar spring.
Background technology
Torsion-bar spring be using rod-shaped elastic part made of spring steel, it is wide when with good elastic deformation ability
General suspension applied to automobile etc. needs to provide the occasion of larger elastic force.
According to the difference of cross sectional shape, torsion-bar spring is divided into cylindrical torsion bar spring and rectangle torsion-bar spring.Rectangle at present
The spring steel that torsion-bar spring uses is generally 60Si2MnA, and this steel hardness number after heat-treatment quenching is handled is generally
45-50HRC。
Severe bends deformation occurs after quenching treatment and is difficult to for the rectangle torsion-bar spring bigger for the single major diameter of reduction
The problem of processing, current torsion-bar spring processing method mostly first carry out roughing using the smaller cylinder blank of draw ratio and are formed
Rectangular billet then carries out quenching treatment to rectangular billet and line cuts processing and forms sub- blank, finally to sub- blank using half essence
The processing methods such as mill, timeliness, fine grinding form torsion-bar spring.Because line is cut in process, severe bends change can occur for cutting blank
Shape is (to use draw ratio as 15:It is 75 that 1 rectangular billet, which is cut into draw ratio,:For 1 cutting blank, crosscutting machining deformation
Measure in 5~6mm, erect and cut machining deformation amount in 7~13mm) so that following process qualification rate is relatively low, and processing efficiency is relatively low；Cause
How this, provide a kind of processing method of new torsion-bar spring, improves passing rate of processing and processing efficiency, is people in the art
Member's technical issues that need to address.
Invention content
To solve the problems, such as that existing torsion-bar spring processing method efficiency is low, cost qualification rate is relatively low, the present invention provides one
The new torsion-bar spring processing method of kind.
The present invention provides a kind of processing method of torsion-bar spring, includes the following steps：
The processing technology hole at the technique tail at blank both ends, is heat-treated the blank；The fabrication hole is located at the blank
Length face on；
Using the fabrication hole of technique tail described in one end as the institute of technique tail described in starting point, the cutting blank to the other end
Fabrication hole is stated, the intermediate region of the blank is made to cut as sub- blank；
It cuts off the technique tail at the blank both ends, form the independent sub- blank；
It processes the sub- blank and forms the torsion-bar spring.
Optionally, before heat treatment blank described in milling outer surface, make the rectangular cross-section perpendicular to length direction.
Optionally, the fabrication hole at the technique tail is reprocessed behind the outer surface of blank described in milling.
Optionally, the first outer surface of blank described in half fine grinding, then cut and to form the sub- blank after heat treatment.
Optionally, the heat treatment method is Q-tempering processing.
Optionally, the blank is cut using electric spark wire cutting method and forms the sub- blank.
Optionally, it is that each length face of the sub- blank is reserved when cutting the blank and forming the sub- blank
The allowance for finish of 0.40~0.50mm.
Optionally, the flexural deformation degree of the sub- blank is measured before processing the sub- blank and according to the sub- blank
Flexural deformation degree determines processing method：
If the flexural deformation degree of the sub- blank is less than or equal to 0.10mm, successively using corase grinding, timeliness, alignment, half essence
Mill, timeliness and fine grinding form the torsion-bar spring；
If the flexural deformation degree of the sub- blank is more than 0.10mm, successively using alignment, corase grinding, timeliness, alignment, half essence
Mill, timeliness and fine grinding form the torsion-bar spring.
Optionally, the technique tail length degree of the blank is 20.0~30.0mm.
Optionally, the blank is 60Si2MnA structural sections, and hardness number is 45~50HRC after heat treatment.
Torsion-bar spring processing method provided by the invention is heat-treated, and using the smaller blank of draw ratio in blank
Processing technology hole at the technique tail at both ends, the cutting of blank intermediate region is carried out by the fabrication hole on the technique tail of both ends, then is cut
Except the sub- blank of technique urogenesis and following process is carried out to sub- blank and forms torsion-bar spring.Due to cutting to form sub- blank in blank
During, the both ends of each sub- blank are still connect with technique tail, can significantly be subtracted by the attachment force of technique tail and sub- blank
The degree of deformation of few sub- blank, provides conveniently for the sub- blank of following process；Meanwhile using such processing method directly using larger
Blank cut to obtain more sub- blank, be remarkably improved the processing efficiency of torsion-bar spring.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings；
Fig. 1 is torsion-bar spring processing method schematic diagram in the embodiment of the present invention；
Fig. 2 is the blank schematic diagram of specific embodiment of the invention processing.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Such as Fig. 1, Fig. 1 is torsion-bar spring processing method schematic diagram in the embodiment of the present invention, is included the following steps：
S101：The processing technology hole at the technique tail at blank both ends；
S102：Blank is heat-treated；
S103：Using the fabrication hole on the technique tail of blank one end as starting point, the technique of cutting blank to other end technique tail
Hole makes the intermediate region of blank cut as sub- blank；
S104：The technique tail at cutting blank both ends forms independent sub- blank；
S105：It processes sub- blank and forms torsion-bar spring.
For ease of understanding, a definitional is done to the technique tail of blank first to explain.Technique tail is to form final torsion
Bar spring and reserve, do not formed final torsion-bar spring blank end regions.The definition of combined process tail, it will be appreciated that
The length of blank should substantially be equal to the sum of two technique tail length degree and finally formed torsion-bar spring length.
In step S101, processing technology hole is bored on the length face in blank at the technique tail at the both ends of blank
Hole, i.e. fabrication hole are simultaneously not arranged on the end face of blank both ends but are positioned close on the length face of end face.Processing technology hole can
Directly using Twist Drill, there is no particular/special requirements for surface accuracy.
Torsion-bar spring to ensure to be subsequently formed has preferable rigidity, fatigue strength and toughness, need to carry out heat to blank
Processing, in the specific embodiment of the invention heat treatment handled using Q-tempering, specific quenched materials during actual processing are quenched
The technological parameters such as fiery temperature and temperature can accordingly be selected according to material type, the common sense of those skilled in the art,
It no longer describes one by one herein.
Certainly, in other embodiments, the manufacturing procedure of the heat treatment procedure of blank and fabrication hole can also be exchanged, i.e., first
Reprocessing technique hole after being heat-treated.It is contemplated that because the hardness number of blank after heat treatment improves a lot so that subsequent brill
Hole machined is more difficult, considers to be heat-treated afterwards rationally not as good as first drilling from process costs angle.
In the present embodiment, it is 60Si2MnA structural sections that blank, which uses, and hardness number can reach 45-50HRC after heat treatment,
Meet the intensity requirement that final processing forms torsion-bar spring.Certainly, in other embodiments, those skilled in the art can also be used
The materials such as common 65Mn steel are processed according to aforementioned method steps, the suitable heat treatment process of selection.
It is not directly from base unlike the prior art, in the embodiment of the present invention such as step S103 and step S104
The end of material cuts to form independent sub- blank, but since the fabrication hole at the technique tail of blank one end, be cut to it is another
Fabrication hole at the technique tail at end makes blank intermediate region form the sub- blank connected with both ends technique tail, then the work by both ends
Skill tail cuts off to form independent sub- blank.Because being formed during blank intermediate region forms sub- blank in cutting, sub- blank begins
It is connect eventually with technique tail, ensures that serious deformation will not occur for cutting process neutron blank, handled convenient for post-processing.Fig. 2 is this hair
The blank schematic diagram of bright specific embodiment processing, it can be seen that blank both ends are respectively provided with technique tail, are respectively provided on two technique tails
Fabrication hole marked as a, b also has the gap that cutting is formed between corresponding fabrication hole a and corresponding fabrication hole b.
Certainly, as in the prior art, because being heat-treated, and after heat treatment again using the smaller blank of draw ratio
It carries out cutting processing and forms sub- blank, deform smaller characteristic in heat treatment using the smaller blank of draw ratio, reduce and turn round
The difficulty of processing of bar spring.
In the embodiment of the present invention, before being heat-treated, Milling Process also is carried out to blank outer surface so that blank is hanging down
Directly in the rectangular cross-section of length direction, formation cuboid shape.Milling Process is carried out before heat treatment on the one hand to consider subsequently
Rectangle torsion-bar spring is formed, is on the other hand that the hardness number of entire blank after considering to be heat-treated is very big, is not easy to milling and adds
Work.For ease of the processing technology hole that drills and reams, Milling Process is preferably carried out before the fabrication hole that drills and reams.It is contemplated that due to subsequently also needing to
It is heat-treated, Milling Process precision is without higher required precision, using rough milling.
It should be noted that the utilization ratio to improve material, the process hole position processed at the technique tail of both ends should correspond to,
The cutting seam that 2 lines are formed is parallel to the length extending direction of blank.
In addition, after heat treatment process, certain deformation can occur for blank；Simultaneously because it only carries out before heat treatment thick
Milling, blank surface is more coarse, can not form good processing datum.For this purpose, in the embodiment of the present invention after heat treatment, point
It cuts to be formed and also there is the step of half fine grinding blank before sub- blank so that each length facial plane degree of blank is higher, ensures base
Expect that total run-out when processing is being cut in the range of 0.02mm in length face.Certainly, such as using vacuum hardening processing become surface
The smaller heat treatment method of shape degree also can be without half fine grinding.
The present invention specific implementation in, cut blank form sub- blank when employ Wire EDM method.Electrical fire
Yarn cutting method using wire electrode discharge generate electric spark hot properties make metal local melting, oxidation corrosion and realize gold
Belong to material to be cut.During concrete application, blank is placed on electric spark machine tool, and is looked for according to the length direction of blank
Just, make blank total run-out control within 0.02mm；Wire electrode is passed through into fabrication hole and is connected on electric spark machine tool, just
It can carry out linear cutter.It is contemplated that in other embodiments, it is widely used that those skilled in the art can also be used
Laser cutting method etc. substitutes electric spark wire cutting method.
Torsion-bar spring could be formed, therefore in cutting blank because carrying out surface processing to the sub- blank after cutting, should also
Certain surplus is reserved subsequently to finish.In the embodiment of the present invention, 0.40-0.50mm is reserved for each length face of sub- blank
Allowance for finish.
The cutting of blank is completed in the length direction along blank, the work at blank both ends can be cut off after each sub- blank of acquisition
Skill tail obtains independent sub- blank.This cutting process can directly use aforementioned electric spark wire cutting method, it can also be used
His cutting method.
After independent sub- blank is obtained, so that it may each sub- blank be handled respectively, obtain satisfactory torsion bar bullet
Spring.In the embodiment of the present invention, according to the difference of the flexural deformation degree of sub- blank that cutting obtains, have to the processing method of sub- blank
Difference, wherein：If the flexural deformation degree of sub- blank is less than or equal to
0.10mm can use corase grinding, timeliness, alignment, half fine grinding, timeliness and fine grinding successively, so as to get torsion bar bullet
Spring bending deformation quantity is controlled between 0.02~0.05mm；If the flexural deformation degree of sub- blank is more than 0.10mm, use successively
Alignment, corase grinding, timeliness, alignment, half fine grinding, timeliness and fine grinding form torsion-bar spring, but also the bending of torsion-bar spring becomes
Shape amount is controlled between 0.02 aforementioned~0.05mm.
In addition, gross distortion, this hair will not occur from sub- blank when improving stock utilization, ensureing that cutting forms sub- blank
The technique tail length degree at both ends is set as between 20.0~30.0mm in bright embodiment；In other embodiments, it is turned round according to processing
Length, the material property of bar spring are different, also the length of the modification technique tail of adaptability.
In a concrete application, draw ratio substantially 15 is processed according to above method:1 rectangular billet is not (including technique
Tail) draw ratio is achieved with as 75:1 rectangle torsion-bar spring 25 is greatly improved processing efficiency, forms final torsion bar bullet
The qualification rate of spring nearly reaches 100%.
The torsion-bar spring processing method in the specific embodiment of the invention is explained above, this field professional technique people can be made
Member can realize or use the present invention.For those skilled in the art, will be to a variety of modifications of these embodiments
It will be apparent that the general principles defined herein can without departing from the spirit or scope of the present invention, at it
It is realized in its embodiment.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to and this paper
The consistent most wide range of disclosed principle and features of novelty.
Claims (9)
1. a kind of processing method of torsion-bar spring, which is characterized in that include the following steps：
The processing technology hole at the technique tail at blank both ends, is heat-treated the blank；The fabrication hole is located at the length of the blank
On degree face；
Using the fabrication hole of technique tail described in one end as the work of technique tail described in starting point, the cutting blank to the other end
Skill hole makes the intermediate region of the blank cut as sub- blank；
It cuts off the technique tail at the blank both ends, form the independent sub- blank；
It processes the sub- blank and forms the torsion-bar spring；
The flexural deformation degree that measures the sub- blank and true according to the flexural deformation degree of the sub- blank is processed before the sub- blank
Determine processing method：
If the flexural deformation degree of the sub- blank is less than or equal to 0.10mm, successively using corase grinding, timeliness, alignment, half refine, when
Effect and fine grinding form the torsion-bar spring；
If the flexural deformation degree of the sub- blank be more than 0.10mm, successively using alignment, corase grinding, timeliness, alignment, partly refine, when
Effect and fine grinding form the torsion-bar spring.
2. torsion-bar spring processing method according to claim 1, it is characterised in that：Blank described in milling is outer before heat treatment
Surface makes rectangular cross-section of the blank perpendicular to length direction.
3. torsion-bar spring processing method according to claim 2, it is characterised in that：Behind the outer surface of blank described in milling again
Process the fabrication hole at the technique tail.
4. torsion-bar spring processing method according to claim 3, which is characterized in that after heat treatment described in first half fine grinding
The outer surface of blank, then cut and to form the sub- blank.
5. torsion-bar spring processing method according to claim 4, it is characterised in that：The heat treatment method is Q-tempering
Processing.
6. according to claim 1-5 any one of them torsion-bar spring processing methods, it is characterised in that：Using Wire EDM
Method cuts the blank and forms the sub- blank.
7. torsion-bar spring processing method according to claim 6, it is characterised in that：It cuts the blank and forms the sub- base
It is the allowance for finish of the reserved 0.40~0.50mm in each length face of the sub- blank during material.
8. torsion-bar spring processing method according to claim 1, it is characterised in that：The technique tail length degree of the blank is
20.0~30.0mm.
9. torsion-bar spring processing method according to claim 8, it is characterised in that：The blank uses 60Si2MnA shaped steel
Material, hardness number is 45~50HRC after heat treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610291932.5A CN105855802B (en) | 2016-05-05 | 2016-05-05 | A kind of processing method of torsion-bar spring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291932.5A CN105855802B (en) | 2016-05-05 | 2016-05-05 | A kind of processing method of torsion-bar spring |
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| CN105855802A CN105855802A (en) | 2016-08-17 |
| CN105855802B true CN105855802B (en) | 2018-06-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030179A (en) * | 1976-01-19 | 1977-06-21 | Dunham-Bush, Inc. | Method of manufacturing low cost non-porous metal connecting rods |
| CN103009017A (en) * | 2013-01-21 | 2013-04-03 | 江苏省宿迁市方圆机械有限公司 | Automotive torsion rod spring pre-torsion process |
| CN104400349A (en) * | 2014-11-06 | 2015-03-11 | 无锡市百顺机械厂 | Manufacturing technology of torsion bar spring |
| CN104625625A (en) * | 2014-12-19 | 2015-05-20 | 扬州东升汽车零部件制造有限公司 | Composite anti-roll bar and machining process thereof |
| CN105252227A (en) * | 2015-11-23 | 2016-01-20 | 航天科工哈尔滨风华有限公司 | Manufacturing process capable of improving stability of torsion bar spring |
-
2016
- 2016-05-05 CN CN201610291932.5A patent/CN105855802B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030179A (en) * | 1976-01-19 | 1977-06-21 | Dunham-Bush, Inc. | Method of manufacturing low cost non-porous metal connecting rods |
| CN103009017A (en) * | 2013-01-21 | 2013-04-03 | 江苏省宿迁市方圆机械有限公司 | Automotive torsion rod spring pre-torsion process |
| CN104400349A (en) * | 2014-11-06 | 2015-03-11 | 无锡市百顺机械厂 | Manufacturing technology of torsion bar spring |
| CN104625625A (en) * | 2014-12-19 | 2015-05-20 | 扬州东升汽车零部件制造有限公司 | Composite anti-roll bar and machining process thereof |
| CN105252227A (en) * | 2015-11-23 | 2016-01-20 | 航天科工哈尔滨风华有限公司 | Manufacturing process capable of improving stability of torsion bar spring |
Non-Patent Citations (1)
| Title |
|---|
| 线切割加工、热处理与模具材料;中川四郎等;《模具技术》;19890430(第4期);105-109 * |
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Address after: 611130 Changan Road, Liucheng, Wenjiang District, Chengdu, Sichuan Province, No. 198 Applicant after: Sichuan Aerospace beacon Servo Control Technology Co., Ltd. Address before: 611100 Liucheng Road, Wenjiang, Sichuan, No. Changan Road, No. 198 Applicant before: Fenghuo Machine Works of China Aerospace Science and Technology Corporation |
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