CN105082571A - Blank forming method for manufacturing composite material bolt - Google Patents
Blank forming method for manufacturing composite material bolt Download PDFInfo
- Publication number
- CN105082571A CN105082571A CN201510523313.XA CN201510523313A CN105082571A CN 105082571 A CN105082571 A CN 105082571A CN 201510523313 A CN201510523313 A CN 201510523313A CN 105082571 A CN105082571 A CN 105082571A
- Authority
- CN
- China
- Prior art keywords
- bolt
- blank
- forming method
- compound material
- prepreg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/467—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements during mould closing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/22—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
- B29C70/228—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure the structure being stacked in parallel layers with fibres of adjacent layers crossing at substantial angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2001/00—Articles provided with screw threads
- B29L2001/002—Bolts
Abstract
The invention discloses a blank forming method for manufacturing a composite material bolt, and relates to a bolt manufacturing method. The blank forming method solves the technical problems that when an existing glass fiber reinforced plastic composite material bolt is formed, fibers of screw teeth and screws are discontinuous, so that the structure strength of the bolt is reduced, and the stiffness is reduced. The method includes the steps that (1) a blank stacking structure is designed; (2) composite material prepreg is laid; (3) tailoring, die assembling and solidifying are carried out; (4) cutting is carried; and (5) a bar is machined. The blank forming method solves the problem that when the glass fiber reinforced plastic composite material bolt is formed, the fibers are discontinuous. In the blank manufacturing process of the glass fiber reinforced plastic composite material bolt, the reinforcing material of the net structure is used, and the continuity of the fibers is guaranteed, so that the fibers of the screw tooth and screw connecting position of the glass fiber reinforced plastic composite material are continuous. The blank forming method is used for manufacturing the composite material bolt.
Description
Technical field
The present invention relates to the method preparing bolt.
Background technology
It is that designer develops electrical equipment and electrical equipment and provides more wide design that generating equipment is applied glass fiber reinforced plastics composite material parts, and glass fiber reinforced plastics composite material has the performances such as excellent insulating properties, corrosion resistance, fatigue durability and high-strength light.Therefore, glass fiber reinforced plastics composite material is subject to the favor of domestic and international electric equipment manufacturer, has now become one of main material of generating equipment parts of new generation.Under identical strength condition, glass fiber reinforced plastics composite material bolt has the weight lighter than metal bolts, has the good insulating properties that metal does not possess simultaneously, is a Main way of following bolt development.
Current glass fiber reinforced plastics composite material bolt adopts prepreg to add metal die die press technology for forming mostly, and the feature of this moulding process is: (1) product size precision is high, reproducible; (2) surface smoothness is high, without the need to modifying; (3) can the baroque goods of one-shot forming.
But this moulding process when formed glass steel composite material bolt thread and overall screw rod fiber discontinuous, the structural strength between thread and overall screw rod, rigidity is caused to reduce, the special shape of screw rod and thread in production process, in knockout course, because bolt is subject to the frictional resistance of ridge, cause bolt demoulding difficulty.Meanwhile, the feature of this moulding process, determines that its technological equipment occupancy is high, to produce cost of investment in enormous quantities large, and production efficiency is low.When formed glass steel composite material bolt, because the fiber of screw rod and thread junction is discontinuous, the feature that composite material light is high-strength can not be played, reduce the bulk strength of glass fiber reinforced plastics composite material bolt.In addition, in its production process, the molding cycle on mould is long, and therefore, during production in enormous quantities, need to drop into a large amount of moulds, cost of investment is large.
Summary of the invention
The present invention to solve existing glass fiber reinforced plastics composite material bolt shaping time thread and the technical problem that reduces of discontinuous bolt arrangement intensity, the rigidity caused of screw rod fiber, and be provided for manufacturing compound material bolt blank forming method.
One, design blank ply angles, adjustment blank laying vertical and horizontal fiber volume fraction ratio, control axial tensile strength and the screw thread shear strength of bolt, computing formula is: σ
l/τ=4tn/D, wherein σ
l: compound material bolt axial tensile strength; τ: composite screw thread shear strength; T: the pitch of compound material bolt; N: the effective thread number of compound material bolt; D: the effective cross-section diameter of compound material bolt;
Two, lay material prepreg, wherein, material prepreg is unidirectional/netted prepreg;
Three, according to the size that step one designs, the composite that cutting step 2 obtains, obtains prepreg sheet stock, and put into by prepreg sheet stock in the middle of blank shaping female mold mould, male mold of closing, carries out matched moulds, and controlling matched moulds temperature is 30 ~ 60 DEG C; Burn close time is 4 ~ 10h; Clamping pressure is 0.5 ~ 5MPa; Be cured again, under temperature is 60 DEG C ~ 80 DEG C conditions, keep 2h, then, under temperature is 100 DEG C ~ 120 DEG C conditions, 2h is kept, then under temperature is 140 DEG C ~ 180 DEG C conditions, keep 4h, control solidifying pressure is 0.2 ~ 5MPa, obtains the blank of glass fiber reinforced plastics composite material square structure;
Four, the blank of glass fiber reinforced plastics composite material square structure that obtains of cutting step three;
Five, the blank that step 4 obtains is machined to bar; The length of bar is 500mm ~ 3000mm, and the bottom surface round diameter of bar is 10mm ~ 100mm; Complete for the manufacture of compound material bolt blank forming method.
The invention has the beneficial effects as follows:
1, method of the present invention solve glass fiber reinforced plastics composite material bolt shaping time a fiber discontinuous difficult problem.Glass fiber reinforced plastics composite material bolt, in blank manufacture process, employs cancellated reinforcing material, ensure that the continuity of fiber, thus makes the fiber of glass fiber reinforced plastics composite material thread and screw rod junction continuous.
2, the inventive method effectively reduces mold use amount, shortens the mold use cycle, reduces production cost, can realize the production in enormous quantities of glass fiber reinforced plastics composite material bolt.
The present invention is for the preparation of compound material bolt.
Detailed description of the invention
Technical solution of the present invention is not limited to following cited detailed description of the invention, also comprises any combination between each detailed description of the invention.
Detailed description of the invention one: present embodiment, for the manufacture of compound material bolt blank forming method, is characterized in that what the method was specifically carried out according to following steps:
One, design blank ply angles, adjustment blank laying vertical and horizontal fiber volume fraction ratio, control axial tensile strength and the screw thread shear strength of bolt, computing formula is: σ
l/τ=4tn/D, wherein σ
l: compound material bolt axial tensile strength; τ: composite screw thread shear strength; T: the pitch of compound material bolt; N: the effective thread number of compound material bolt; D: the effective cross-section diameter of compound material bolt;
Two, lay material prepreg, wherein, material prepreg is unidirectional/netted prepreg;
Three, according to the size that step one designs, the composite that cutting step 2 obtains, obtains prepreg sheet stock, and put into by prepreg sheet stock in the middle of blank shaping female mold mould, male mold of closing, carries out matched moulds, and controlling matched moulds temperature is 30 ~ 60 DEG C; Burn close time is 4 ~ 10h; Clamping pressure is 0.5 ~ 5MPa; Be cured again, under temperature is 60 DEG C ~ 80 DEG C conditions, keep 2h, then, under temperature is 100 DEG C ~ 120 DEG C conditions, 2h is kept, then under temperature is 140 DEG C ~ 180 DEG C conditions, keep 4h, control solidifying pressure is 0.2 ~ 5MPa, obtains the blank of glass fiber reinforced plastics composite material square structure;
Four, the blank of glass fiber reinforced plastics composite material square structure that obtains of cutting step three;
Five, the blank that step 4 obtains is machined to bar; The length of bar is 500mm ~ 3000mm, and the bottom surface round diameter of bar is 10mm ~ 100mm; Complete for the manufacture of compound material bolt blank forming method.
Detailed description of the invention two: present embodiment and detailed description of the invention one are unlike σ in step one
lvalue be 250 ~ 450MPa; The value of τ is 40 ~ 200MPa; The value of t is with reference to standard GB/T/T193-2003; The value of n is 4 ~ 12; D=bolt diameter-2 × 0.866 × t; Thread form angle 60 °.Other is identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment and detailed description of the invention one or two unlike: in step 2 during laying, be 0 ° by bolt shaft to direction setting, perpendicular bolt axial direction is set as 90 °, centered by 90 °, upper strata is according to the order lamination lay prepreg of 90 °, 80 °, 70 °, 60 °, 50 °, 40 °, 30 °, 20 °, 10 °, 0 °, and lower floor is according to the order lamination lay prepreg of 90 °, 100 °, 110 °, 120 °, 130 °, 140 °, 150 °, 160 °, 170 °, 180 °.Other is identical with detailed description of the invention one or two.
Detailed description of the invention four: one of present embodiment and detailed description of the invention one to three unlike: in step 2, material prepreg is made up of reinforcement and matrix material.Other is identical with one of detailed description of the invention one to three.
Detailed description of the invention five: one of present embodiment and detailed description of the invention one to four unlike: reinforcement is carbon fiber, glass fibre, aramid fiber or basalt fibre.Other is identical with one of detailed description of the invention one to four.
Detailed description of the invention six: one of present embodiment and detailed description of the invention one to five unlike: matrix material is epoxy resin, phenolic resins, polyurethane resin, polyimide resin, bimaleimide resin or vinyl ester resin.Other is identical with one of detailed description of the invention one to five.
Detailed description of the invention seven: one of present embodiment and detailed description of the invention one to six unlike: cut 1.3 times that the blank obtained is of a size of design size in step 4.Other is identical with one of detailed description of the invention one to six.
Following examples are adopted to verify beneficial effect of the present invention:
Embodiment one:
The present embodiment, for the manufacture of compound material bolt blank forming method, is characterized in that what the method was specifically carried out according to following steps:
One, design blank ply angles, adjustment blank laying vertical and horizontal fiber volume fraction ratio, control axial tensile strength and the screw thread shear strength of bolt, computing formula is: σ
l/τ=4tn/D, wherein, design σ
lbe 4 for 400MPa, τ are 40MPa, n; Thread form angle 60 °;
Two, lay material prepreg, during laying, be 0 ° by bolt shaft to direction setting, perpendicular bolt axial direction is set as 90 °, centered by 90 °, upper strata is according to the order lamination lay prepreg of 90 °, 80 °, 70 °, 60 °, 50 °, 40 °, 30 °, 20 °, 10 °, 0 °, and lower floor is according to the order lamination lay prepreg of 90 °, 100 °, 110 °, 120 °, 130 °, 140 °, 150 °, 160 °, 170 °, 180 °; Wherein, material prepreg is unidirectional/netted prepreg; Reinforcement is carbon fiber, matrix material is epoxy resin;
Three, according to the size that step one designs, the composite that cutting step 2 obtains, obtains prepreg sheet stock, and put into by prepreg sheet stock in the middle of blank shaping female mold mould, male mold of closing, carries out matched moulds, and controlling matched moulds temperature is 40 DEG C; Burn close time is 6h; Clamping pressure is 2MPa; Be cured again, under temperature is 70 DEG C of conditions, keep 2h, then under temperature is 100 DEG C of conditions, keep 2h, then under temperature is 160 DEG C of conditions, keep 4h, control solidifying pressure is 2MPa, obtains the blank of glass fiber reinforced plastics composite material square structure;
Four, the blank of glass fiber reinforced plastics composite material square structure that obtains of cutting step three;
Five, the blank that step 4 obtains is machined to bar; The length of bar is 1000mm, and the bottom surface round diameter of bar is 50mm; Complete for the manufacture of compound material bolt blank forming method.
The blank prepared by the present embodiment is processed into screw rod and adopts the performance comparison of different process manufacture and the existing fiberglass screw rod in market as following table:
Claims (7)
1., for the manufacture of compound material bolt blank forming method, it is characterized in that what the method was specifically carried out according to following steps:
One, design blank ply angles, adjustment blank laying vertical and horizontal fiber volume fraction ratio, control axial tensile strength and the screw thread shear strength of bolt, computing formula is: σ
l/ τ=4tn/D, wherein σ
l: compound material bolt axial tensile strength; τ: composite screw thread shear strength; T: the pitch of compound material bolt; N: the effective thread number of compound material bolt; D: the effective cross-section diameter of compound material bolt;
Two, lay material prepreg, wherein, material prepreg is unidirectional/netted prepreg;
Three, according to the size that step one designs, the composite that cutting step 2 obtains, obtains prepreg sheet stock, and put into by prepreg sheet stock in the middle of blank shaping female mold mould, male mold of closing, carries out matched moulds, and controlling matched moulds temperature is 30 ~ 60 DEG C; Burn close time is 4 ~ 10h; Clamping pressure is 0.5 ~ 5MPa; Be cured again, under temperature is 60 DEG C ~ 80 DEG C conditions, keep 2h, then, under temperature is 100 DEG C ~ 120 DEG C conditions, 2h is kept, then under temperature is 140 DEG C ~ 180 DEG C conditions, keep 4h, control solidifying pressure is 0.2 ~ 5MPa, obtains the blank of glass fiber reinforced plastics composite material square structure;
Four, the blank of glass fiber reinforced plastics composite material square structure that obtains of cutting step three;
Five, the blank that step 4 obtains is machined to bar; The length of bar is 500mm ~ 3000mm, and the bottom surface round diameter of bar is 10mm ~ 100mm; Complete for the manufacture of compound material bolt blank forming method.
2. according to claim 1 for the manufacture of compound material bolt blank forming method, it is characterized in that σ in step one
lvalue be 250 ~ 450MPa; The value of τ is 40 ~ 200MPa; The value of t is with reference to standard GB/T/T193-2003; The value of n is 4 ~ 12; D=bolt diameter-2 × 0.866 × t; Thread form angle 60 °.
3. according to claim 1 for the manufacture of compound material bolt blank forming method, when it is characterized in that laying in step 2, be 0 ° by bolt shaft to direction setting, perpendicular bolt axial direction is set as 90 °, centered by 90 °, upper strata is according to the order lamination lay prepreg of 90 °, 80 °, 70 °, 60 °, 50 °, 40 °, 30 °, 20 °, 10 °, 0 °, and lower floor is according to the order lamination lay prepreg of 90 °, 100 °, 110 °, 120 °, 130 °, 140 °, 150 °, 160 °, 170 °, 180 °.
4. according to claim 1 for the manufacture of compound material bolt blank forming method, it is characterized in that in step 2, material prepreg is made up of reinforcement and matrix material.
5. according to claim 4 for the manufacture of compound material bolt blank forming method, it is characterized in that reinforcement is carbon fiber, glass fibre, aramid fiber or basalt fibre.
6. according to claim 4 for the manufacture of compound material bolt blank forming method, it is characterized in that matrix material is epoxy resin, phenolic resins, polyurethane resin, polyimide resin, bimaleimide resin or vinyl ester resin.
7. according to claim 1 for the manufacture of compound material bolt blank forming method, it is characterized in that in step 4, cutting 1.3 times that the blank obtained is of a size of design size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523313.XA CN105082571B (en) | 2015-08-24 | 2015-08-24 | For manufacturing compound material bolt blank forming method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523313.XA CN105082571B (en) | 2015-08-24 | 2015-08-24 | For manufacturing compound material bolt blank forming method |
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| Publication Number | Publication Date |
|---|---|
| CN105082571A true CN105082571A (en) | 2015-11-25 |
| CN105082571B CN105082571B (en) | 2017-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510523313.XA Active CN105082571B (en) | 2015-08-24 | 2015-08-24 | For manufacturing compound material bolt blank forming method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437568A (en) * | 2015-12-10 | 2016-03-30 | 上海复合材料科技有限公司 | Molding method for composite screw rod suitable for satellite |
| CN106088356A (en) * | 2016-06-28 | 2016-11-09 | 四川点石玄武纤维科技有限公司 | A kind of method preparing basalt fibre screw |
| CN106142293B (en) * | 2016-06-28 | 2018-07-06 | 四川点石玄武纤维科技有限公司 | A kind of preparation method of underground pipe gallery |
| CN113478861A (en) * | 2021-06-18 | 2021-10-08 | 中冶建筑研究总院（深圳）有限公司 | Resin-based composite material bolt for chemical bar planting and preparation method thereof |
| CN113799418A (en) * | 2021-08-23 | 2021-12-17 | 厦门大学 | Preparation method of intelligent composite material bolt, composite material bolt and use method |
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| US20030057590A1 (en) * | 1994-12-19 | 2003-03-27 | Urs Loher | Process for manufacturing components made of fiber-reinforced thermo- plastic materials and components manufactured by this process |
| CN2744878Y (en) * | 2004-09-26 | 2005-12-07 | 王国华 | Electric leakage preventing and insulating bolt and screw cap |
| CN102336026A (en) * | 2011-10-25 | 2012-02-01 | 管印贵 | Direct on-line pultrusion process for fiber reinforced thermoplastic composite material |
| CN102700150A (en) * | 2012-05-14 | 2012-10-03 | 湖北三江航天江北机械工程有限公司 | Molding method of wall-thickness-variable composite connection skirt |
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2015
- 2015-08-24 CN CN201510523313.XA patent/CN105082571B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030057590A1 (en) * | 1994-12-19 | 2003-03-27 | Urs Loher | Process for manufacturing components made of fiber-reinforced thermo- plastic materials and components manufactured by this process |
| CN2744878Y (en) * | 2004-09-26 | 2005-12-07 | 王国华 | Electric leakage preventing and insulating bolt and screw cap |
| CN102336026A (en) * | 2011-10-25 | 2012-02-01 | 管印贵 | Direct on-line pultrusion process for fiber reinforced thermoplastic composite material |
| CN102700150A (en) * | 2012-05-14 | 2012-10-03 | 湖北三江航天江北机械工程有限公司 | Molding method of wall-thickness-variable composite connection skirt |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437568A (en) * | 2015-12-10 | 2016-03-30 | 上海复合材料科技有限公司 | Molding method for composite screw rod suitable for satellite |
| CN105437568B (en) * | 2015-12-10 | 2018-07-20 | 上海复合材料科技有限公司 | A kind of forming method of composite material lead screw suitable for satellite |
| CN106088356A (en) * | 2016-06-28 | 2016-11-09 | 四川点石玄武纤维科技有限公司 | A kind of method preparing basalt fibre screw |
| CN106142293B (en) * | 2016-06-28 | 2018-07-06 | 四川点石玄武纤维科技有限公司 | A kind of preparation method of underground pipe gallery |
| CN113478861A (en) * | 2021-06-18 | 2021-10-08 | 中冶建筑研究总院（深圳）有限公司 | Resin-based composite material bolt for chemical bar planting and preparation method thereof |
| CN113799418A (en) * | 2021-08-23 | 2021-12-17 | 厦门大学 | Preparation method of intelligent composite material bolt, composite material bolt and use method |
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|---|---|
| CN105082571B (en) | 2017-07-18 |
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