CN107584055A - A kind of wind spring preparation method - Google Patents
A kind of wind spring preparation method Download PDFInfo
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- CN107584055A CN107584055A CN201710860731.7A CN201710860731A CN107584055A CN 107584055 A CN107584055 A CN 107584055A CN 201710860731 A CN201710860731 A CN 201710860731A CN 107584055 A CN107584055 A CN 107584055A
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Abstract
The present invention relates to wind spring manufacturing field, discloses a kind of wind spring preparation method：Spring steel a is obtained into spring steel b by electroslag remelting；Spring steel c is made in spring steel b hot rollings；Spring steel c finishing is obtained into spring steel d；Filling nitrogen in annealing furnace, spring steel d is placed in annealing in annealing furnace and obtains spring steel e；Coiling core is placed on coiling machine, spring steel e is formed into wind spring a by coiling core coiling；Wind spring a heating and thermal insulations are obtained into wind spring b in 1 hour；Wind spring b is placed in quenching liquid quick cooling under pressure quenching device clamping and obtains wind spring c；Wind spring c is placed in tempering furnace to be tempered insulation 2 hours and quickly cool down and obtains wind spring d；Wind spring d is obtained into wind spring e by compressed air shotblasting machine shot-peening, wind spring e is further strengthened.Wind spring e is subjected to surface granosealing, wind spring f is obtained, by using above-mentioned process, makes wind spring d that there is fabulous mechanical performance, high dimensional accuracy and excellent Corrosion Protection.
Description
Technical field
The present invention relates to wind spring manufacturing field, more specifically, it relates to a kind of wind spring preparation method.
Background technology
Plane scroll spring, also known as clockwork spring, are that a kind of one end is fixed and other end effect has the spring of moment of torsion；Turning round
Square effect lower spring material produces elasticity of flexure deformation, spring is planar produced torsion, the size and moment of torsion of its deformation angle
It is directly proportional.
When producing wind spring f1 as shown in Figure 1, wind spring f1 one end has a locating slot 11, and the other end is bent into
Annular, form location division 12.It is currently by the way that spring steel is placed in torsion machine obtained by coiling.
At present, Publication No. CN106736302A Chinese patent discloses a kind of spring production process, and it is included bullet
Spring steel a is placed in tagging in the sharp machine of stone roller and obtains spring steel b；Spring steel b is placed in heating in intermediate-frequency heating furnace and obtains spring steel c；Will
Spring steel c is placed in wind spring in hot coiling spring machine, obtains spring body a；Spring body a is placed in quenching in glowing furnace and obtains spring sheet
Body b；Spring body b is cooled down by quenching liquid to obtain spring body c；Spring body c is placed in tempering furnace and is tempered 100 minutes
Obtain spring body d；Spring body d is placed in the first hydraulic press presses to and tight 1 time obtains spring body e；By spring body e
Spring body f is obtained by spring grinding machine face grinding；Spring body f is obtained into spring body g in 20 minutes by compressed air shotblasting machine shot-peening；Will
Spring body g is placed in the second hydraulic press and pressed to and tight 3 times；Spring body g anticorrosion with painting coatings are obtained into spring body h.
This spring production process step is simple, but is placed in after the spring body in glowing furnace is taken out in hot coiling spring machine
Coiling so that spring body fully contacts with the oxygen in air, and the precision of resulting spring body is relatively low.
The content of the invention
In view of the deficienciess of the prior art, the invention reside in a kind of wind spring preparation method is provided, volume can be lifted by reaching
The purpose of spring precision.
To achieve the above object, the invention provides following technical scheme：A kind of wind spring preparation method, including following step
Suddenly：
Step1：The spring steel a that material is 60Si2CrVA is obtained into high-quality spring steel b by electroslag remelting process；
Step2：The spring steel c in banding is made in spring steel b hot rollings；
Step3：Spring steel c is obtained into spring steel d by numerical control machining center finishing；
Step4：Nitrogen is filled in annealing furnace, spring steel d is placed in into annealing in annealing furnace obtains spring steel e, the annealing
Temperature is 700-780 DEG C；
Step5：Coiling core is placed on coiling machine, spring steel e is formed into wind spring a by the coiling core coiling；
Step6：Wind spring a is placed in heating furnace to heat 2 hours and shaped, the temperature of the heating is 600-620 DEG C；
Step7：By the wind spring a after the completion of sizing, heating and thermal insulation obtains wind spring b, the temperature of the heating for 1 hour in a vacuum furnace
For 840-880 DEG C；
Step8：Wind spring b is obtained into wind spring c by pressing to be placed in quenching liquid quickly to cool down under quenching device clamping；
Step9：Wind spring c is placed in tempering furnace to be tempered 2 hours and quickly cool down and obtains wind spring d, the temperature of the tempering is
420-480℃；
Step10：Wind spring d is obtained into wind spring e by compressed air shotblasting machine shot-peening；
Step11：Surface granosealing is carried out to wind spring e and obtains wind spring f.
By using above-mentioned technical proposal, spring steel a obtains having minimal amount of impurity by electroslag remelting process
Spring steel b, it is not easy to make the wind spring of shaping that larger deformation occurs in follow-up heat treatment process, then by spring steel b
Hot rolling obtains spring steel c, by spring steel c by numerical control machining center finishing, spring steel d is obtained after adjusting dimensional tolerance, by bullet
Surface is not likely to produce oxidation reaction to spring steel d during annealing softening in anaerobic container, so that spring steel e has preferably
Dimensional accuracy；Wind spring b is quickly being cooled down by being placed under pressing the clamping of quenching device in quenching liquid, is making wind spring c sizes be not easy to produce
Raw larger change, then wind spring c is tempered to obtain wind spring d by tempering furnace and is placed in shot-peening in compressed air shotblasting machine after cooling down can be rolled up
Spring e, oxidation will be not likely to produce after wind spring e phosphorating treatments so that wind spring f be not easy while there is higher dimensional accuracy it is rotten
Erosion.
The present invention is further arranged to：Described coiling core includes supporting plate, mandrel, support bar and arc locating piece,
Described mandrel is fixed in supporting plate, and described arc locating piece is fixed in the side wall of mandrel, and described support bar is embedded
In spring steel e.
By using above-mentioned technical proposal, coiling core is installed on torsion machine, spring steel e end sleeve is located at arc
On shape locating piece, spring steel e is positioned, then drive coiling core to rotate by torsion machine, by the process of spring steel e coiling
In, support bar is placed in spring steel e and with spring steel e while is coiled, the wind spring a that coiling is formed has preferable size
Precision, after then coiling core is removed from torsion machine, support bar is removed from wind spring a, it is easy to operate.
The present invention is further arranged to：Described pressure quenching device includes upper bracket, top board, lower carriage, lower platen and determined
Position mechanism, described top board are fixed on upper bracket, and described lower platen is fixed on lower carriage, and the two of described wind spring b
The side wall with top board, the side wall of lower platen contradict respectively for side, and described upper bracket is consolidated with lower carriage by the detent mechanism
It is fixed.
By using above-mentioned technical proposal, wind spring b is placed between upper bracket and lower carriage, passes through top board and lower platen
Side wall and wind spring b contradict so that the contact area of top board, lower platen and wind spring b is smaller, and wind spring b is placed in quenching liquid
When, it can be more uniformly distributed wind spring b coolings, so as to which the wind spring c for making to obtain has higher dimensional accuracy.
The present invention is further arranged to：Described detent mechanism includes pilot pin and location nut, and the pilot pin passes through
Lower carriage, upper bracket are simultaneously threadedly coupled with the location nut, and described location nut and upper bracket are back to the side of lower carriage
Contradict.
By using above-mentioned technical proposal, pilot pin is passed through into lower carriage and upper bracket, location nut is rotated in positioning
On bolt, pilot pin and location nut is set to position upper bracket and lower carriage, after wind spring b cools down to obtain wind spring c, by location nut
Removed from pilot pin, it is easy to operate.
The present invention is further arranged to：Described pressure quenching device also includes multiple amendment bolts, multiple amendment bolts
It is embedded in the gap of the wind spring b.
By using above-mentioned technical proposal, amendment bolt is arranged in gap, during wind spring b is cooled down, passed through
Correct the support of bolt so that wind spring b is more not susceptible to serious deformation, and obtaining wind spring c has preferable dimensional accuracy.
The present invention is further arranged to：Described pressure quenching device also includes positioning wire rope, described positioning wire rope around
Roll up the outmost turns in the wind spring b and time outer ring.
By using above-mentioned technical proposal, wind spring b outmost turns are fixed on time outer ring by steel wire rope, in wind spring b
During cooling, the precision of wind spring b outmost turns is ensured, be not likely to produce larger deformation, so that wind spring b is cooled down
Obtained wind spring c has preferable dimensional accuracy.
The present invention is further arranged to：Described pressure quenching device also includes fixed plate, and described fixed plate is fixed on lower branch
Frame is threaded with for the anti-deformation bolt with the conflict of wind spring b outer wall in described fixed plate towards the side of upper bracket.
By using above-mentioned technical proposal, by the way that anti-deformation bolt is rotated, support the outer wall of anti-deformation bolt and wind spring b
Touch, to wind spring b outer wall support, serious deformation is not susceptible to during wind spring b is cooled down, so as to make obtained wind spring c tools
There is preferable dimensional tolerance.
The present invention is further arranged to：The side of described lower platen back to lower carriage is fixed with for outer with wind spring b
The locating dowel that wall contradicts.
By using above-mentioned technical proposal, support force is applied to wind spring b outer wall by locating dowel, wind spring b is placed in and quenched
It is not likely to produce during being cooled down in fiery liquid compared with large deformation, so as to which the wind spring c for making to obtain has preferable dimensional accuracy.
The present invention is further arranged to：Opening is offered in the middle part of described upper bracket, lower carriage.
By using above-mentioned technical proposal, when pressure quenching device is placed in quenching liquid, a part of quenching liquid passes through opening
Entering in pressure quenching device, wind spring b is cooled down from inside to outside, another part quenching liquid is moved from wind spring b outside to middle part, by
Outer and interior that wind spring b is cooled down, so that wind spring b cooling is more uniformly distributed, obtained wind spring c dimensional accuracy is higher.
The present invention is further arranged to：Multiple positioning spiro pits, the positioning spiro pit are offered in described supporting plate
In be threaded with for the bolt with the conflict of wind spring a outer wall.
By using above-mentioned technical proposal, bolt is passed through into the outer wall after positioning spiro pit with wind spring a outmost turns
Contradict, wind spring a is positioned, reduce wind spring a resilience deformation quantity, further lift dimensional accuracy.
In summary, the invention has the advantages that：
Spring steel d anneals in the environment of anaerobic obtains the spring steel e that there is very small amount to aoxidize on surface, so that spring steel e has
There is preferable dimensional accuracy；Wind spring b is placed in quenching liquid under the clamping of pressure quenching device and cooled down, by pressing quenching device to wind spring
B positioning action so that obtained wind spring c has higher dimensional accuracy, meanwhile, quenching liquid can pass through pressure quenching device and with
Wind spring b is fully contacted, and is more uniformly distributed wind spring b cooling, further improves wind spring c dimensional accuracy, then by tempering and
The wind spring e obtained after shot-peening has preferable dimensional accuracy, then obtaining wind spring f after phosphorating treatment has preferable size smart
Degree.
Brief description of the drawings
Fig. 1 is wind spring f structural representation；
Fig. 2 is the schematic flow sheet of this method；
Fig. 3 is the attachment structure schematic diagram for embodying wind spring a and coiling core；
Fig. 4 is the structural representation for embodying coiling core；
Fig. 5 is the attachment structure schematic diagram of pressure quenching device and wind spring b；
Fig. 6 is the structural representation for embodying pressure quenching device.
Reference：1st, wind spring f；11st, locating slot；12nd, location division；2nd, coiling core；21st, supporting plate；22nd, mandrel；
221st, neck；23rd, support bar；24th, arc locating piece；3rd, quenching device is pressed；31st, upper bracket；32nd, top board；33rd, lower carriage；34、
Lower platen；35th, bolt is corrected；36th, steel wire rope；37th, fixed plate；38th, locating dowel；4th, detent mechanism；41st, pilot pin；42nd, position
Nut；5th, anti-deformation bolt；6th, opening；71st, positioning spiro pit；72nd, bolt.
Embodiment
The present invention will be further described referring to the drawings.
As shown in Fig. 2 a kind of wind spring preparation method, it is characterised in that comprise the following steps：
Step1：The spring steel a that material is 60Si2CrVA is obtained into high-quality spring steel b by electroslag remelting process；
Step2：The spring steel c in banding is made in spring steel b hot rollings；
Step3：Spring steel c is obtained into spring steel d by numerical control machining center finishing；
Step4：During air in annealing furnace is extracted by air exhauster, nitrogen is filled in annealing furnace, by spring steel d
It is placed in annealing in annealing furnace and obtains spring steel e, the temperature of annealing is 700 DEG C；
Step5：Coiling core 2 is placed on coiling machine（See Fig. 3）, spring steel e is passed through into coiling core 2（See Fig. 3）Around scroll
Into wind spring a；
Step6：Wind spring a is placed in heating furnace to heat 2 hours and shaped, the temperature of heating is 600 DEG C；
Step7：By the wind spring a after the completion of sizing, heating and thermal insulation obtains wind spring b for 1 hour in a vacuum furnace, and the temperature of heating is 840
℃；
Step8：By wind spring b by pressing quenching device（See Fig. 6）Quick cooling is placed in quenching liquid under clamping and obtains wind spring c；
Step9：Wind spring c is placed in tempering furnace to after being tempered 2 hours quick cooling and obtains wind spring d, the temperature of tempering is 420 DEG C；
Step10：Wind spring d is obtained into wind spring e by compressed air shotblasting machine shot-peening；
Step11：Surface granosealing is carried out to wind spring e and obtains wind spring f1.
Spring steel a obtains high-quality spring steel b after eliminating most of impurity by electroslag remelting process, due to electricity
Slag remelting processing is prior art, is not repeated in the present embodiment.Spring steel b hot rollings be can obtain into banding and section is side
The spring steel c of shape.Then by spring steel c surface by obtaining spring after numerical control machining center car, milling, plane, grinder sequence finishing
Steel d, spring steel d now have preferable dimensional tolerance.During by air exhauster, the air in annealing furnace is extracted, fill out
Inflated with nitrogen, making the state for reaching anaerobic in annealing furnace, spring steel d then is placed in into annealing in annealing furnace obtains spring steel e, due to
Spring steel d anneals in the environment of anaerobic so that spring steel e surface only has the size of minimal amount of oxidation, i.e. spring steel e
Precision is higher.Equal available can almost identical spring steel e between 700-780 DEG C for annealing temperature.
As shown in figure 4, coiling core 2 includes supporting plate 21, mandrel 22, support bar 23 and arc locating piece 24.Supporting plate
21 is in the form of annular discs, and for being screwed in torsion machine, multiple positioning threads are further opened with the surface of supporting plate 21
Hole 71.Mandrel 22 is in cylinder, and the neck 221 of arc is offered on periphery, and the neck 221 is used for spring steel e end
Contradict, and be screwed in supporting plate 21 back to the side of torsion machine, mandrel 22 and supporting plate 21 are coaxially disposed.Arc
Locating piece 24 is fixed in the side wall of mandrel 22, and a curved locating slot 11 is opened up in spring steel e end.By spring steel
E is sheathed on arc locating piece 24 by locating slot 11, and spring steel e is positioned.Support bar 23 is made of rubber, in strip
Shape.
Torsion machine drives axis rotation of the coiling core 2 along mandrel 22, by spring steel e coiling, in spring steel e coiling the
During one circle, support bar 23 is placed on spring steel e, and wind spring a is formed as spring steel e is coiled in the lump, passes through support bar 23
Adjust wind spring a pitch so that wind spring a dimensional accuracy is higher.One locating dowel 38 is vertically fixed in supporting plate 21.After
And bent in the one end of wind spring a away from mandrel 22 and location division 12 is formed in locating dowel 38.Bolt 72 is passed through into positioning spiral shell
Outer wall after pit 71 with wind spring a outmost turns is contradicted, and wind spring a is positioned, and is reduced wind spring a resilience deformation quantity, is further carried
Rise dimensional accuracy.
After coiling core 2 is removed from torsion machine, support bar 23 is chosen from wind spring a by draw point.
Then wind spring a is placed in heating furnace and heated 2 hours, the temperature of heating is 600 DEG C, wind spring a is shaped.In reality
In, preheating temperature can heat to wind spring a between 600-620 DEG C and be not easy to have an impact wind spring a performance.
Wind spring a after the completion of sizing is placed in vacuum drying oven and heats and be incubated 1 hour, obtains wind spring b.The temperature of heating is extremely
840 DEG C, now wind spring a can thermally equivalent, heating-up temperature can obtain the wind spring b of same mechanical performance at 840-880 DEG C.
Wind spring b is immersed in quenching liquid quick cooling under the clamping of pressure quenching device 3 and obtains wind spring c.It is cold by heat expansion
Contracting principle, because wind spring b is the good conductor of heat, wind spring b is cooled down in the case of without positioning, and size can produce larger change.
As shown in figure 5, by pressing quenching device 3 preferably to ensure wind spring c dimensional accuracy.
As shown in fig. 6, pressure quenching device 3 includes upper bracket 31, top board 32, lower carriage 33, lower platen 34, amendment bolt
35th, steel wire rope 36, fixed plate 37, locating dowel 38 and detent mechanism 4, detent mechanism 4 include pilot pin 41 and location nut 42.
Upper bracket 31 and lower carriage 33 are in cross, are respectively placed in wind spring b both sides up and down and horizontal positioned.On
Pressing plate 32 is equal with the quantity of lower platen 34 and is eight.Eight top boards 32 are placed vertically and are fixed on upper bracket 31
Edge.Eight vertical directions of lower platen 34 and it is fixed on the edge of lower carriage 33.Make top board 32 away from upper bracket 31
Side and wind spring b upper surface contradict, and side of the lower platen 34 away from lower carriage 33 and wind spring b lower surface contradict, to volume
While spring b is supported, the contact area with wind spring b is reduced.
Offer rounded upper installing hole in the end of upper bracket 31, the end of lower carriage 33 offer it is rounded under
Mounting hole.Pilot pin 41 is bolt, and pilot pin 41 sequentially passed through into lower mounting hole, upper installing hole, and with the screw thread of location nut 42
Connection, location nut 42 is set to be contradicted with upper bracket 31 back to wind spring b side.Upper bracket 31 and lower carriage 33 are fixed.
Multiple amendment bolts 35 are arranged in the gap formed between wind spring b screw thread and screw thread.Multiple amendment bolts
35 are uniformly distributed along wind spring b length direction.The clamping force that amendment bolt 35 applies is determined bolt 35 is corrected by wind spring b
Position.
Steel wire rope 36 is bundled in wind spring b outmost turns and time outer ring, outmost turns are positioned.
Locating dowel 38 is fixed on lower platen 34 back to the side of lower carriage 33, the length of locating dowel 38 in cylinder
More than the height of lower platen 34.Above-mentioned location division 12 is sheathed in a locating dowel 38, by locating dowel 38 to location division
12 supports, make limiting section be not easy because of contraction and serious deformation.The outer wall of remaining locating dowel 38 and wind spring b outmost turns contradicts,
Wind spring b outmost turns are made to be not susceptible to serious deformation.
Fixed plate 37 is placed vertically, and is fixed on lower carriage 33 towards wind spring b side.Along the height of fixed plate 37
Degree direction is placed with two anti-deformation bolts 5, anti-deformation bolt 5 is threadedly coupled with fixed plate 37, and by anti-deformation bolt 5
The outer wall of threaded shank and wind spring b outmost turns contradicts.
The opening 6 flowed into for quenching liquid is offered at the middle part of upper bracket 31 and lower carriage 33.
After wind spring b is fixed in pressure quenching device 3, it is immersed in quenching liquid, a part of quenching liquid is immersed in by opening 6
Spread between upper bracket 31 and lower carriage 33 and from inside to outside toward wind spring b outmost turns；Another part quenching liquid is by upper bracket 31
The lower cavity formed between the upper plenum and lower carriage 33 and wind spring b that are formed between wind spring b, from outside to inside toward wind spring b's
Innermost circle spreads so that wind spring b can uniformly, quickly cool down to obtain wind spring c, and wind spring c deformation quantities are minimum, and dimensional accuracy is higher.
After quenching device 3 being pressed to be taken out from quenching liquid, pressure quenching device 3 is removed from wind spring c.As shown in Fig. 2 by wind spring
C is placed in tempering furnace be tempered 2 hours after, in above-mentioned pressure quenching device 3（See Fig. 6）Clamping under be immersed in fast quickly cooling in quenching liquid
But wind spring d is obtained.The temperature of tempering equal available energy identical wind spring d between 420-480 DEG C.
Wind spring d is placed in shot-peening in compressed air shotblasting machine, you can obtain wind spring e.Shot-peening uses shot, and sphere diameter is 1mm.Shot-peening
Coverage rate=shot-peening crater/entire area × 100%, in the present embodiment, shot-peening coverage rate is 95%.
Wind spring e is finally carried out to surface granosealing immediately and can obtain wind spring f1（See Fig. 1）.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of wind spring preparation method, it is characterised in that comprise the following steps：
Step1：The spring steel a that material is 60Si2CrVA is obtained into high-quality spring steel b by electroslag remelting process；
Step2：The spring steel c in banding is made in spring steel b hot rollings；
Step3：Spring steel c is obtained into spring steel d by numerical control machining center finishing；
Step4：Nitrogen is filled in annealing furnace, spring steel d is placed in into annealing in annealing furnace obtains spring steel e, the annealing
Temperature is 700-780 DEG C；
Step5：Coiling core (2) is placed on coiling machine, spring steel e is formed into wind spring by coiling core (2) coiling
a；
Step6：Wind spring a is placed in heating furnace to heat 2 hours and shaped, the temperature of the heating is 600-620 DEG C；
Step7：By the wind spring a after the completion of sizing, heating and thermal insulation obtains wind spring b, the temperature of the heating for 1 hour in a vacuum furnace
For 840-880 DEG C；
Step8：Wind spring b is obtained into wind spring c by pressing to be placed in quenching liquid quickly to cool down under quenching device (3) clamping；
Step9：Wind spring c is placed in tempering furnace to be tempered 2 hours and quickly cool down and obtains wind spring d, the temperature of the tempering is
420-480℃；
Step10：Wind spring d is obtained into wind spring e by compressed air shotblasting machine shot-peening；
Step11：Surface granosealing is carried out to wind spring e and obtains wind spring f (1).
2. a kind of wind spring preparation method according to claim 1, it is characterized in that：Described coiling core (2) includes support
Plate (21), mandrel (22), support bar (23) and arc locating piece (24), described mandrel (22) are fixed in supporting plate (21),
Described arc locating piece (24) is fixed in the side wall of mandrel (22), and described support bar (23) is embedded in spring steel e.
3. a kind of wind spring preparation method according to claim 1 or 2, it is characterized in that：Described pressure quenching device (3) includes upper
Support (31), top board (32), lower carriage (33), lower platen (34) and detent mechanism (4), described top board (32) are fixed on
On upper bracket (31), described lower platen (34) is fixed on lower carriage (33), described wind spring b both sides respectively with top board
(32) side wall, the side wall of lower platen (34) contradicts, and described upper bracket (31) passes through the detent mechanism with lower carriage (33)
(4) it is fixed.
4. a kind of wind spring preparation method according to claim 3, it is characterized in that：Described detent mechanism (4) includes positioning
Bolt (41) and location nut (42), the pilot pin (41) through lower carriage (33), upper bracket (31) and with the location nut
(42) it is threadedly coupled, described location nut (42) contradicts with upper bracket (31) back to the side of lower carriage (33).
5. a kind of wind spring preparation method according to claim 4, it is characterized in that：Described pressure quenching device (3) also includes more
Individual amendment bolt (35), multiple amendment bolts (35) are embedded in the gap of the wind spring b.
6. a kind of wind spring preparation method according to claim 5, it is characterized in that：It is fixed that described pressure quenching device (3) also includes
Position steel wire rope (36), outmost turns and time outer ring of described positioning wire rope (36) coiling in the wind spring b.
7. a kind of wind spring preparation method according to claim 6, it is characterized in that：Described pressure quenching device (3) also includes solid
Fixed board (37), described fixed plate (37) are fixed on side of the lower carriage (33) towards upper bracket (31), described fixed plate
(37) it is threaded with for the anti-deformation bolt (5) with the conflict of wind spring b outer wall.
8. a kind of wind spring preparation method according to claim 7, it is characterized in that：Described lower platen (34) is back to lower carriage
(33) side is fixed with for the locating dowel (38) with the conflict of wind spring b outer wall.
9. a kind of wind spring preparation method according to claim 8, it is characterized in that：Described upper bracket (31), lower carriage
(33) opening (6) is offered in the middle part of.
10. a kind of wind spring preparation method according to claim 2, it is characterized in that：Offered in described supporting plate (21)
Multiple positioning spiro pits (71), it is threaded with the positioning spiro pit (71) for the positioning with the conflict of wind spring a outer wall
Bolt (72).
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| CN110064896A (en) * | 2019-06-18 | 2019-07-30 | 青海金泽恩新材料科技有限公司 | A kind of preparation method of plane scroll spring |
| CN110814236A (en) * | 2019-11-22 | 2020-02-21 | 常州泰瑞弹簧有限公司 | Spring coiling method for compression spring based on automatic spring coiling machine |
| CN113293278A (en) * | 2021-05-20 | 2021-08-24 | 山西太钢不锈钢股份有限公司 | Online heat treatment process for wire |
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| CN108672608A (en) * | 2018-06-15 | 2018-10-19 | 许昌卡瑞娜发制品有限公司 | A kind of technique clockwork spring processing modular system |
| CN109277501A (en) * | 2018-10-19 | 2019-01-29 | 陕西航空电气有限责任公司 | A kind of manufacturing method and brush for electromachine spring of brush for electromachine spring |
| CN110064896A (en) * | 2019-06-18 | 2019-07-30 | 青海金泽恩新材料科技有限公司 | A kind of preparation method of plane scroll spring |
| CN110064896B (en) * | 2019-06-18 | 2021-04-13 | 青海金泽恩新材料科技有限公司 | Preparation method of flat spiral spring |
| CN110814236A (en) * | 2019-11-22 | 2020-02-21 | 常州泰瑞弹簧有限公司 | Spring coiling method for compression spring based on automatic spring coiling machine |
| CN113293278A (en) * | 2021-05-20 | 2021-08-24 | 山西太钢不锈钢股份有限公司 | Online heat treatment process for wire |
| CN114393153A (en) * | 2021-12-27 | 2022-04-26 | 太仓市惠得利弹簧有限公司 | Preparation process of anti-fatigue spring with low production defects |
| CN114393153B (en) * | 2021-12-27 | 2023-11-14 | 太仓市惠得利弹簧有限公司 | Preparation process of anti-fatigue spring with low production defects |
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