CN1651795A - Method for mfg. composite material screw spring - Google Patents
Method for mfg. composite material screw spring Download PDFInfo
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- CN1651795A CN1651795A CN 200410039094 CN200410039094A CN1651795A CN 1651795 A CN1651795 A CN 1651795A CN 200410039094 CN200410039094 CN 200410039094 CN 200410039094 A CN200410039094 A CN 200410039094A CN 1651795 A CN1651795 A CN 1651795A
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- composite material
- central shaft
- helical spring
- drip molding
- outer shroud
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Abstract
The method for making composite material helical spring includes the following steps: firstly, preparing a die, said die contains a lower combination seat, an external ring combined with lower combination seat, an upper combination seat which can be moved toward lower combination direction, a central ring fixed on upper combination seat, a central shaft which is placed in the centre of central ring and can be telescopically moved, a helical elastic positioning piece winded round said central shaft a composite material strip winded round the helical gap of said positioning piece, them making the central ring compress the elastic positioning piece and composite material strip, simultaneously heating to make the composite material strip be formed tinto a helical spring.
Description
Technical field
The present invention is relevant a kind of helical spring, refers to a kind of composite material manufacturing that utilizes especially, and the helical spring manufacture method of composite material that can reduce procedure, gain in strength.
Background technique
At present, general helical spring all is to make with steel, utilize the recuperability of steel itself, make the helical spring of screw winding can be used to absorption axes to stressed, therefore, helical spring generally is used in the various mechanisms, and even in the hanging avoiding shock system as automobile, locomotive bicycle, or general industrial is mechanically.
Hanging avoiding shock system with bicycle is an example, and each several parts such as the vehicle frame of bicycle, wheel rim all constantly develop towards light-weighted direction, in the hope of promoting the sports performance efficiency of bicycle.Yet vehicle frame, wheel rim etc. all adopts high strength and light-weighted material to make gradually, and even as aluminum alloy, magnesium alloy, carbon fiber titanium alloy etc., helical spring is to rest on the stage made from steel only.Though and even steel have high strength, high rigidity better elastic, but, steel coil springs has the heavy shortcoming of weight also, and, the aftershock that helical spring is produced in the flexible recuperability of stressed back invar material, also can strengthen its inertial force because of weight is heavier, amplitude of vibration is strengthened, cause unnecessary aftershock.
Moreover, steel itself are good because of elasticity, therefore, act on the vibrations of helical spring itself, can't absorb voluntarily by steel itself, and need outwards to transmit to eliminate these active forces, therefore, in hanging avoiding shock system, most likely set up damping mechanism and absorb these active forces, and increased the complexity and the whole system gross weight of mechanism.
In addition, when desire promotes helical spring bearing strength, understand the higher steel of working strength usually or strengthen the diameter of steel; yet; these practices all can make the helical spring weight of making increase, so existing steel coil springs is real in addition improved necessity.
For improving above-mentioned shortcoming, industry develops and to utilize composite material to make helical spring, significantly to reduce helical spring weight, and the elasticity such as the U. S. Patent the 4th of maintenance appropriateness, 765, No. 602, it is the helical spring for a composite material, but this helical spring in two ends respectively inside bend be hook-shaped, and if make the composite material helical spring with existing manufacture method, must be by the mould manufacturing of complexity, and because the material behavior of composite material, and when die sinking, can not allow too a large amount of distortion, otherwise cause helical spring fracture or damage easily, therefore composite material manufactures helical spring, still has the technical of its manufacturing, and has to be overcome.
General manufacture method such as U. S. Patent the 4th, 260, No. 143, it is to be provided with a spiral helicine gap by a mould, embed for the composite material bar, again through hot briquetting, form a composite material helical spring, but because the formed spacing of mould is identical, and can't need, provide the spacing of diversification to change according to helical spring design, for example: make helical spring two ends elasticity coefficient not equal, and cause application area limited, and make each and all need change different moulds apart from different helical springs, the increase of die cost caused.In addition, this kind method is with the structure of combination center mould, is formed composite helical spring, therefore can cause the many places paring line.
But, still have its shortcoming on the helical spring manufacture method of aforementioned composite material, therefore using the shortcoming of implementing to have at least as described later:
1. manufacturing effect is not good:
Aforesaid helical spring is easy to generate the many places paring line when left and right mould or splitting die divide mould, form stress raiser.
2. processing trouble:
The said spiral spring is subject to the setting of mould, can't form smooth shape in two ends, so helical spring still needs fine finishing behind minute mould, the helical spring two ends is scabbled, and increase machining complexity and processing cost.
3. reduction intensity:
The said spiral both ends of the spring scabbles the place, and the thinner thickness of formation causes problem generations such as structural strength deficiency easily; And its product has the many places paring line easily to be caused stress to concentrate and reduces its intensity.
4. increase cost:
Aforementioned when making the helical spring of different size (varying in size) or spacing as internal diameter, need to put in order the mould redesign and the whole replacing of group, the sharing of mould is low, therefore significantly increases the cost of making.
Summary of the invention
The purpose of this invention is to provide a kind of helical spring manufacture method of composite material that has the helical spring effect, simplifies processing, increases helical spring structure intensity and cut down finished cost.
For achieving the above object, the present invention takes following design proposal:
The helical spring manufacture method of a kind of composite material, it comprises the following steps:
Winding drip molding: the drip molding spiral is set around outside the central shaft, makes the drip molding of this winding have the gap of spiral, and this central shaft is can be displaced in one in the ring;
Winding composite material bar: this composite material bar is set around this central shaft periphery, and along the helical winding of the spiral helicine gap of this drip molding, for this composite material bar shaped curl;
Pressurized, heated: the central shaft that will be arranged with drip molding and composite material bar is inserted in the outer shroud, this drip molding and composite material bar are placed in the formed containing space of this central shaft and middle ring and outer shroud: middle ring is descended along this central shaft, compress this drip molding and this composite material bar, and simultaneously in the hardening temperature of mold heated, so that this composite material bar typing to this composite material bar;
Finished product is taken out in die sinking: this composite material is separated promptly getting the composite material helical spring with central shaft and drip molding.
Wherein should in ring go up in conjunction with conjunction base on, this outer shroud is then in conjunction with conjunction base once.
Wherein this time conjunction base fovea centralis is provided with gap, and this time conjunction base is equipped with a location bolt respectively in the relative both sides in this time gap, be provided with one relatively for this outer shroud two bottom sides and fall L shaped locating slot, and two locating slots that make this outer shroud are aimed at the insertion of two holding down bolts, and this outer shroud rotates an angle with the guiding of two locating slots, make this outer shroud be fixed in this time conjunction base, should go up conjunction base central authorities runs through and is provided with a receiving hole, and this receiving hole is provided with two holding down bolts relatively, and should middle ring correspondence be provided with two locating slots, be fixed in conjunction base on this for ring in this.
Wherein should middlely encircle central authorities and run through the class hole that is provided with the different sizes in an aperture, and relative this class hole of this central shaft is established and is a different big footpath section and the path sections of external diameter, and should big footpath section can be limited to class's hole small bore end of encircling in this, the big footpath section that prevents this central shaft deviates to make this spacing class hole of encircling in this that is displaced into of central shaft energy by ring bottom in this, and this path section passes in this to be encircled, to move axially in this containing space.
Wherein the path section peripheral, axial of this central shaft is provided with the groove of complex trace.
The present invention comprises: prepare mould in advance, and this mould is conjunction base, one is incorporated into the outer shroud of this time conjunction base, conjunction base on one, one is incorporated into the middle ring of conjunction base on this, the central shaft that one stretches encircles in this, and these outer shroud central authorities are formed with a penetration hole, be formed with the containing space of a central column between this penetration hole and this central shaft, form spiral helicine drip molding in addition in advance, and this drip molding is set around this central shaft periphery, again along between spiral helicine this drip molding space in the shape of a spiral shape be arranged with a composite material bar, for this composite material bar shaped curl, the central shaft that then will be arranged with drip molding and composite material bar is affixed one's name in this outer shroud, this drip molding and composite material bar are placed in this containing space, during again via this mold heated, should go up conjunction base moves down, drive and to descend along this central shaft by middle ring, and this drip molding and this composite material bar pressurized are heated, so that after this composite material bar compression typing, should go up on the conjunction base and move, drive and middlely to encircle, this central shaft, move on this composite material bar and this drip molding, and break away from this outer shroud together with this composite material that has been shaped, again this composite material is separated with central shaft and drip molding, promptly get the composite material helical spring.
Above-mentioned and other purpose and advantage of the present invention are not difficult to obtain to understand in depth from following selected embodiment's detailed description and accompanying drawing.
Certainly, the present invention is at some in addition on part, or allows in the arrangement of part differently in addition, but selected embodiment then in this specification, described in detail, and shows its structure in accompanying drawing.
Description of drawings
Fig. 1 is a manufacturing Block Diagram of the present invention.
Fig. 2 is the assembly three-dimensional exploded view of mould of the present invention.
Fig. 3 is that axle of the present invention and middle ring form the containing space schematic representation that holds composite material and drip molding when penetrating outer shroud.
Fig. 4 is the not assembled sectional view of pressurized state of the present invention.
Fig. 5 is the assembled sectional view after the pressurized, heated of the present invention.
Fig. 6 is the stereo appearance figure after the demoulding of the present invention.
Fig. 7 is the stereo appearance figure that the present invention peels off this drip molding.
Fig. 8 is the stereo appearance figure of composite material helical spring finished product of the present invention.
Fig. 9 is another central shaft of the present invention embodiment's a stereo appearance figure.
Embodiment
Referring to Fig. 1～shown in Figure 9: person shown in the figure is the selected example structure of the present invention, and this only for the usefulness of explanation, is not subjected to the restriction of this kind structure in patent application.
The helical spring manufacture method of the composite material of present embodiment, as shown in Figure 1 to Figure 3, its manufacturing step comprises:
Prepare mould: prepare to have conjunction base 10, one outer shroud 11, encircle 12 in one, conjunction base 14 on one central shaft 13 and, this time conjunction base 10 fovea centraliss are provided with gap 100, and this time conjunction base 10 wears a location bolt 101 respectively in the relative both sides in this time gap 100, be provided with one relatively for these outer shroud 11 two bottom sides and fall L shaped locating slot 110, and two locating slots 110 that make this outer shroud 11 are aimed at 101 insertions of two holding down bolts, and this outer shroud 11 rotates an angle with the guiding of two locating slots 110, make this outer shroud 11 be fixed in this time conjunction base 10, and these outer shroud 11 central authorities are formed with a penetration hole 111, in like manner, should go up conjunction base 14 central authorities runs through and is provided with a receiving hole 141, and this receiving hole 141 is equipped with two holding down bolts 140 relatively, and should middle ring 12 correspondences be provided with two locating slots 121, be fixed in conjunction base 14 on this for ring 12 in this, should middlely encircle 12 central authorities and run through the class holes 120 that are provided with the different sizes in an aperture, and should in ring 12 outside dimension be same as this outer shroud 11 through 111 external diameters, and these central shaft 13 relative these class holes 120 are established and are different big footpath the section 130 and one path section 131 of external diameter, these path section 131 peripheral, axial are concaved with recessed poor 132 of complex trace, and footpath section 130 can be limited to class hole 120 small bore end of ring 12 in this greatly, the big footpath section 130 that prevents this central shaft 13 is deviate from by ring 12 bottoms in this, make this central shaft 13 can spacingly be displaced into the class hole 120 of ring 12 in this, and this path section 131 passes encircles 12 in this, and makes this penetration hole 111 and 13 of this central shafts be formed with the containing space 133 (as shown in Figure 3) of a central column.
Winding elastic forming spare 20: the spiral drip molding 20 of moulding in advance, this drip molding 20 of present embodiment is to be elastic caoutchouc material (Elastomer), and this drip molding 20 has a spiral gap 21 (as Fig. 6), and this drip molding 20 is set around the path section 131 of this central shaft 13 and supplies inserting of composite material bar in the helical gap of this drip molding 20.
Winding composite material bar 30: this composite material bar 30 is inserted along spiral helicine these drip molding 20 gaps,, form helical for this composite material bar 30 with shape winding in the shape of a spiral.
Pressurized, heated: please consult Fig. 5 simultaneously, the central shaft 13 that is arranged with drip molding 20 and composite material bar 30 is inserted in this outer shroud 11, this drip molding 20 and composite material bar 30 are placed in this containing space 133, and during by this mold heated, should go up conjunction base 14 moves down, drive and to descend along this central shaft 13 by middle ring 12, and this drip molding 20 and this composite material bar 30 are subjected to the pressure of ring 12 in this and are heated, so that this composite material bar 30 is subjected to the compression of this drip molding 20 and the setting of hardening, and if pressure is excessive, when causing composite material bar 30 excess compression, may cause the problem damaged, for example: the problem of the fine bar fracture of carbon, and the present invention is provided with plurality of grooves 132 by this central shaft 13, and the containing space of the fibre deformation of the gap 21 of this drip molding 20 when these composite material bar 30 pressurizeds can be provided, reduce the problem of distortion.
Die sinking: please consult shown in Figure 6ly simultaneously, should go up on the conjunction base 14 and move, drive should in move on ring 12 and this central shaft 13, and drive this composite material bar 30 of being shaped and this drip molding 20 synchronously to break away from this outer shroud 11.
Detach out this central shaft 13: this central shaft 13 is by ring 12 in this and should go up extraction on the conjunction base 14, and makes this composite material bar 30 of shaping and this drip molding 20 be subjected to the contact of ring 12 end faces in this, and breaks away from this central shaft 13.
Peel off this drip molding 20: please consult shown in Figure 7ly simultaneously, this drip molding 20 after compressing is separated down by the gap of this composite material bar 30 after being shaped.
Finished product: please consult simultaneously shown in Figure 8, helical composite material bar 30 1 helical springs after being shaped; By above-mentioned step, to finish the helical spring manufacture method of composite material of the present invention.
Certainly, still there are many examples in the present invention, therebetween the only variation on the details.See also Fig. 9, it is the second embodiment of the present invention, and wherein this central shaft 15 is provided with a bigger diameter end 150 and a miner diameter end 151, and these miner diameter end 151 surfaces establish and be even surface, still can comply with above-mentioned manufacture method, produces the helical spring of this composite material.
The present invention utilizes above-mentioned technological means, and has following advantage after implementing:
1. manufacturing effect is good:
Helical spring of the present invention can not be formed with paring line in periphery, and can provide this helical spring when stressed after manufacturing is finished, and dissipation of ferees reduces the problem that stress is concentrated uniformly.
2. simplify processing:
Helical spring of the present invention two ends can directly form smooth shape, and not need to scabble as commonly using in the helical spring two ends when moulding, therefore can simplify helical spring process step.
3. gain in strength:
Helical spring of the present invention need not scabble owing to two ends, and the spring outside coil diameter at two ends is identical, therefore can not cause the problem of helical spring two ends strength deficiency, compared to the helical spring of commonly using, increases its structural strength.
4. reduce cost:
Step of the present invention is when making the helical spring of different size, can be according to the required external diameter of helical spring, replacing is installed on the outer shroud of this time conjunction base, and according to the required internal diameter of helical spring, change and middlely to encircle and central shaft, use to adjust and change this helical spring external diameter, internal diameter and thickness, and according to helical spring dimensional changes, the conversion outer shroud, middle ring and central shaft do not need mold integral is changed, and significantly reduce the cost of mould, in addition, cooperate and change this drip molding,, significantly increase the helical spring manufacturing scope of making and can change in response to helical spring elastic design to change the helix pitch of this drip molding, and need not change the mould of whole group, reduce the cost of mould, and this drip molding can reuse, can significantly reduce manufacture cost.
The above embodiment's announcement is in order to explanation the present invention, is not in order to restriction the present invention, so the displacement of the change of numerical value or equivalent elements must be subordinate to category of the present invention such as.
By above detailed description, can make and know this skill person and understand that the present invention can reach aforementioned purpose really, the real regulation that has met Patent Law proposes patent application.
Claims (5)
1, the helical spring manufacture method of a kind of composite material, it comprises the following steps:
Winding drip molding: the drip molding spiral is set around outside the central shaft, makes the drip molding of this winding have the gap of spiral, and this central shaft is can be displaced in one in the ring;
Winding composite material bar: this composite material bar is set around this central shaft periphery, and along the helical winding of the spiral helicine gap of this drip molding, for this composite material bar shaped curl;
Pressurized, heated: the central shaft that will be arranged with drip molding and composite material bar is inserted in the outer shroud, this drip molding and composite material bar are placed in the formed containing space of this central shaft and middle ring and outer shroud: middle ring is descended along this central shaft, compress this drip molding and this composite material bar, and simultaneously in the hardening temperature of mold heated, so that this composite material bar typing to this composite material bar;
Finished product is taken out in die sinking: this composite material is separated promptly getting the composite material helical spring with central shaft and drip molding.
2, the helical spring manufacture method of composite material according to claim 1 is characterized in that, wherein should in ring go up in conjunction with conjunction base on, this outer shroud is then in conjunction with conjunction base once.
3, the helical spring manufacture method of composite material according to claim 1, it is characterized in that, wherein this time conjunction base fovea centralis is provided with gap, and this time conjunction base is equipped with a location bolt respectively in the relative both sides in this time gap, be provided with one relatively for this outer shroud two bottom sides and fall L shaped locating slot, and two locating slots that make this outer shroud are aimed at the insertion of two holding down bolts, and this outer shroud rotates an angle with the guiding of two locating slots, make this outer shroud be fixed in this time conjunction base, should go up conjunction base central authorities runs through and is provided with a receiving hole, and this receiving hole is provided with two holding down bolts relatively, and should middle ring correspondence be provided with two locating slots, be fixed in conjunction base on this for ring in this.
4, the helical spring manufacture method of composite material according to claim 1, it is characterized in that, wherein should middlely encircle central authorities and run through the class hole that is provided with the different sizes in an aperture, and relative this class hole of this central shaft is established and is a different big footpath section and the path sections of external diameter, and should big footpath section can be limited to class's hole small bore end of encircling in this, the big footpath section that prevents this central shaft deviates to make this spacing class hole of encircling in this that is displaced into of central shaft energy by ring bottom in this, and this path section passes in this to be encircled, to move axially in this containing space.
5, the helical spring manufacture method of composite material according to claim 1 is characterized in that, wherein the path section peripheral, axial of this central shaft is provided with the groove of complex trace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410039094 CN1651795A (en) | 2004-02-02 | 2004-02-02 | Method for mfg. composite material screw spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410039094 CN1651795A (en) | 2004-02-02 | 2004-02-02 | Method for mfg. composite material screw spring |
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| Publication Number | Publication Date |
|---|---|
| CN1651795A true CN1651795A (en) | 2005-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410039094 Pending CN1651795A (en) | 2004-02-02 | 2004-02-02 | Method for mfg. composite material screw spring |
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| CN (1) | CN1651795A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434612A (en) * | 2011-09-27 | 2012-05-02 | 常州瑞择微电子科技有限公司 | Polytetrafluoro ethylene (PFA) spring and manufacture method thereof |
| CN106493971A (en) * | 2016-11-30 | 2017-03-15 | 上海工程技术大学 | Carbon fibre composite helical spring and preparation method thereof and mould |
-
2004
- 2004-02-02 CN CN 200410039094 patent/CN1651795A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434612A (en) * | 2011-09-27 | 2012-05-02 | 常州瑞择微电子科技有限公司 | Polytetrafluoro ethylene (PFA) spring and manufacture method thereof |
| CN106493971A (en) * | 2016-11-30 | 2017-03-15 | 上海工程技术大学 | Carbon fibre composite helical spring and preparation method thereof and mould |
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