CN103950211B - The forming frock of a kind of hat composite stringer blank and forming method - Google Patents
The forming frock of a kind of hat composite stringer blank and forming method Download PDFInfo
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- CN103950211B CN103950211B CN201410086758.1A CN201410086758A CN103950211B CN 103950211 B CN103950211 B CN 103950211B CN 201410086758 A CN201410086758 A CN 201410086758A CN 103950211 B CN103950211 B CN 103950211B
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- 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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
Abstract
The invention belongs to Composites Molding Techniques, relate to hat composite stringer blank shaped device and the improvement of forming method.The shaped device of the present invention is made up of lower mold and upper mold [9]；Lower mold is made up of platform [1], left side lower mold [2], right side lower mold [3], left briquetting [4], right briquetting [5], left cushion block [6], right cushion block [7], left bolt [10], right bolt [11], left block [12], right block [13], left bolt [14] and right bolt [15].The forming step of the present invention is: laying prepreg plane blank [8]；Determine spacing W1 between left side lower mold [2] and right side lower mold [3]；Assemble；Load.The present invention improves laying efficiency, it is ensured that the quality of product and precision.
Description
Technical field
The invention belongs to Composites Molding Techniques, relate to hat composite stringer blank shaped device
And the improvement of forming method.
Background technology
The forming method of major part hat composite stringer blank is to use manual method on mould at present
In layer laying.Concrete grammar is first to get out laying mould be then layered on mould by the prepreg of monolayer.
In laying, laying needs the means with flatiron or other heating that layer is real, between laying with laminating when running into turning
Easily entrain into bubble.It addition, at for each knuckle, be all independent laying, the quality of laying cannot
Ensure consistent.So, in order to overcome the feelings not pasting sum between fold or the laying occurred in lay-up process
Condition, needs to take a substantial amount of time, cause efficiency low while laying quality also be not easy ensure.Manual
The mode of laying, for the shorter stringer of size, has quality conformance poor, and laying institute elapsed time is longer
Etc. shortcoming, longer for length, it is difficult to control to due to laying angle etc., and needs a large amount of human resources,
The mode of manual laying has been difficult to.This is accomplished by one, and on quality conformance and efficiency and laying is difficult
The aspects such as degree are all better than the forming mode of manual laying.
Summary of the invention
It is an object of the invention to: propose hat composite stringer blank shaped device and the one-tenth of a kind of improvement
Type method, in order to improve laying efficiency, it is ensured that the quality of product and precision.
The technical scheme is that the forming frock of a kind of hat composite stringer blank, institute's molding
The structure of hat composite stringer blank 17 be: its cross sectional shape is hat, this hat composite wood
Material stringer blank 17 is made up of the marginal ridge 17c of crown 17a and cap waist 17b and both sides, and thickness is δ,
A length of s, the width of crown 17a is L1, and the width of cap waist 17b is L2, and the width of marginal ridge 17c is
L3；The medial surface of cap waist 17b is r with the transition arc radius of the medial surface junction of crown 17a；Cap waist
The lateral surface of 17b is r with the transition arc radius of the lateral surface junction of marginal ridge 17c, cap waist 17b and cap
The angle of edge 17c and the angle of cap waist 17b and crown 17a are α；This hat composite stringer
The forming frock of blank is made up of lower mold and upper mold 9；Lower mold is by platform 1, left side lower mold 2, right side lower mold
3, left briquetting 4, right briquetting 5, left cushion block 6, right cushion block 7, left bolt 10, right bolt 11, left gear
Block 12, right block 13, left bolt 14 and right bolt 15 form；Left side lower mold 2 and right side
The cross section of lower mold 3 for equivalently-sized trapezoidal, the inclined-plane, right side of left side lower mold 2 and right side lower mold 3
Inclined-plane, left side be the forming surface of cap waist 17b, the upper surface of left side lower mold 2 and right side mould 3 is marginal ridge 17c
The forming surface of lower surface, the transition arc radius between inclined-plane, right side and the upper surface of left side lower mold 2 is r,
Transition arc radius between inclined-plane, left side and the upper surface of right side lower mold 3 is r；The right side of left side lower mold 2
Angle between inclined-plane and upper surface is α, the angle between inclined-plane, left side and the upper surface of right side lower mold 3
For α；Left side lower mold 2 is identical with the height of right side lower mold 3 and is more than hat composite stringer blank
The height of 17, left side lower mold 2 is identical with the width of right side lower mold 3 and is more than hat composite stringer
The width of the marginal ridge 17c of blank 17, left side lower mold 2 is identical with the length of right side lower mold 3 and is more than cap
The length of shape composite stringer blank 17；Left cushion block 6 is the rectangular slab equal with left side lower mold 2 length,
Right cushion block 7 is the rectangular slab equal with the length of right side lower mold 3, left cushion block 6 and the thickness of right cushion block 7
For δ, left cushion block 6 is positioned at the left end of left side lower mold 2 upper surface, and right cushion block 7 is positioned in the lower mold 3 of right side
The right-hand member on surface；Left briquetting 4 is the rectangular slab equal with left side lower mold 2 length, and left briquetting 4 is pressed in a left side
On the upper surface of cushion block 6 and prepreg plane blank 8, by left bolt 10, left briquetting 4 is compressed；Right
Briquetting 5 is the rectangular slab equal with right side lower mold 3 length, and right briquetting 5 is pressed in right cushion block 7 and prepreg
On the upper surface of plane blank 8, by right bolt 11, right briquetting 5 is compressed；The length of upper mold 9 is equal to
The length of left side lower mold 2, the cross section of upper mold 9 is hat, and the lower surface of upper mold 9 is table on 17a at the bottom of cap
The forming surface in face, the inclined-plane, left side of upper mold 9 is the forming surface of left side cap waist 17b, and the right side of upper mold 9 is oblique
Face is the forming surface of right side cap waist 17b, the forming surface that upper lower surface is marginal ridge 17c of upper mold 9, on
The right flank of mould 9 is the forming surface of right side riser 16b left surface；Between upper mold 9 left surface and lower surface
And the arc radius between right flank and lower surface is r；The inclined-plane, left side of upper mold 9 and lower surface and upper table
Angle between face is α；The transition arc of the inclined-plane, left side of upper mold 9 and inclined-plane, right side and lower surface half
Footpath is r, and the transition arc radius of the inclined-plane, left side of upper mold 9 and inclined-plane, right side and upper surface is r+ δ, single
Position is mm.
A kind of forming method of hat composite stringer blank, it is characterised in that: use as described above
Forming frock be shaped, the step of molding is:
1, laying prepreg plane blank 8: according to the size of hat composite stringer blank 17, calculates
The size of prepreg plane blank 8, computational methods are: length a of plane blank 8 is equal to stringer blank
Length s of 17, the width b=L1+2L2+2L3+2 α r+ α δ of plane blank 8, spread the most in the plane
Folded rectangle prepreg plane blank 8；
2, spacing W1 between left side lower mold 2 and right side lower mold 3 is determined:
W1=L1+(r+ δ) × ctg α/2 × (1+sin α)；
3, assemble: platform 1 is fixed on lower table, left side lower mold 2, right side lower mold 3 are placed
Between left block 12, right block 13, rotate the left bolt 14 on left block 12, right block 13
With right bolt 15 so that the spacing between left side lower mold 2 and right side lower mold 3 is W1, by plane
Prepreg blank 8 is put on left side lower mold 2 and right side lower mold 3；Place left cushion block 6, right cushion block 7
Outside left side lower mold 2, right side lower mold 3 upper surface；Left briquetting 4, right briquetting 5 are installed pre-in plane
Leaching is expected on blank 8 and left cushion block 6, right cushion block 7；Utilize left bolt 10, right bolt 11 by left briquetting 4,
Right briquetting 5 is fixed；Upper mold 9 is arranged on the forcing press of upper table, and by upper mold 9 and lower mold pair
Just；
4, load: handle forcing press upper table move straight down, movement rate be the 0.1mm/ second～
The 0.5mm/ second, upper mold 9 is made to progress in the cavity between left side lower mold 2 and right side lower mold 3, until on
Till mould 9 is fitted with prepreg blank completely, plane blank 8 is made to be shaped to hat blank 17.
The invention have the advantage that propose a kind of improvement hat composite stringer blank shaped device and
Forming method, improves laying efficiency, it is ensured that the quality of product and precision.
Accompanying drawing explanation
Fig. 1 is the structural representation of hat composite stringer blank.
Fig. 2 is the structural representation of hat composite stringer blank forming frock, and the state in figure is to add
State before load.
Fig. 3 is the schematic diagram of the forming process of hat composite stringer blank, and the state in figure is to load
Complete state.
Detailed description of the invention
Below the present invention is described in further details.Seeing Fig. 1 to Fig. 3, a kind of hat composite is long
The forming frock of purlin blank, the structure of the hat composite stringer blank 17 of institute's molding is: its cross section
Being shaped as hat, this hat composite stringer blank 17 is by crown 17a and cap waist 17b and both sides
Marginal ridge 17c forms, and thickness is δ, a length of s, and the width of crown 17a is L1, the width of cap waist 17b
Degree is L2, and the width of marginal ridge 17c is L3；The medial surface of cap waist 17b is connected with the medial surface of crown 17a
The transition arc radius at place is r；The lateral surface of cap waist 17b and the transition of the lateral surface junction of marginal ridge 17c
Arc radius is r, and the angle of cap waist 17b and the angle of marginal ridge 17c and cap waist 17b and crown 17a is equal
For α；The forming frock of this hat composite stringer blank is made up of lower mold and upper mold 9；Lower mold is by putting down
Platform 1, left side lower mold 2, right side lower mold 3, left briquetting 4, right briquetting 5, left cushion block 6, right cushion block 7,
Left bolt 10, right bolt 11, left block 12, right block 13, left bolt 14 and right bolt
15 compositions；The cross section of left side lower mold 2 and right side lower mold 3 for equivalently-sized trapezoidal, left side lower mold
The inclined-plane, right side of 2 and the inclined-plane, left side of right side lower mold 3 are the forming surface of cap waist 17b, left side lower mold 2 and the right side
The upper surface of side form 3 is the forming surface of marginal ridge 17c lower surface, the inclined-plane, right side of left side lower mold 2 and upper table
Transition arc radius between face is r, the transition arc between inclined-plane, left side and the upper surface of right side lower mold 3
Radius is r；Angle between inclined-plane, right side and the upper surface of left side lower mold 2 is α, a left side for right side lower mold 3
Angle between skew back face and upper surface is α；Left side lower mold 2 identical with the height of right side lower mold 3 and
More than the height of hat composite stringer blank 17, left side lower mold 2 is identical with the width of right side lower mold 3
And the width of the marginal ridge 17c more than hat composite stringer blank 17, under left side lower mold 2 and right side
The length of mould 3 is identical and more than the length of hat composite stringer blank 17；Left cushion block 6 is and a left side
The rectangular slab that side lower mold 2 length is equal, right cushion block 7 is the rectangular slab equal with the length of right side lower mold 3,
The thickness of left cushion block 6 and right cushion block 7 is δ, and left cushion block 6 is positioned at the left end of left side lower mold 2 upper surface,
Right cushion block 7 is positioned at the right-hand member of right side lower mold 3 upper surface；Left briquetting 4 is equal with left side lower mold 2 length
Rectangular slab, left briquetting 4 is pressed on the upper surface of left cushion block 6 and prepreg plane blank 8, by a left side
Left briquetting 4 is compressed by bolt 10；Right briquetting 5 is the rectangular slab equal with right side lower mold 3 length, right pressure
Block 5 is pressed on the upper surface of right cushion block 7 and prepreg plane blank 8, by right bolt 11 by right briquetting
5 compress；The length of upper mold 9 is equal to the length of left side lower mold 2, and the cross section of upper mold 9 is hat, upper mold 9
Lower surface be the forming surface of 17a upper surface at the bottom of cap, the inclined-plane, left side of upper mold 9 be left side cap waist 17b
Forming surface, the inclined-plane, right side of upper mold 9 is the forming surface of right side cap waist 17b, the upper lower surface of upper mold 9
For the forming surface of marginal ridge 17c, the right flank of upper mold 9 is the forming surface of right side riser 16b left surface；On
Arc radius between mould 9 left surface and lower surface and between right flank and lower surface is r；Upper mold 9
Angle between inclined-plane, left side and lower surface and upper surface is α；The inclined-plane, left side of upper mold 9 and right side are oblique
Face is r with the transition arc radius of lower surface, the inclined-plane, left side of upper mold 9 and inclined-plane, right side and the mistake of upper surface
Crossing arc radius is r+ δ, and unit is mm.
A kind of forming method of hat composite stringer blank, it is characterised in that: use as described above
Forming frock be shaped, the step of molding is:
1, laying prepreg plane blank 8: according to the size of hat composite stringer blank 17, calculates
The size of prepreg plane blank 8, computational methods are: length a of plane blank 8 is equal to stringer blank
Length s of 17, the width b=L1+2L2+2L3+2 α r+ α δ of plane blank 8, spread the most in the plane
Folded rectangle prepreg plane blank 8；
2, spacing W1 between left side lower mold 2 and right side lower mold 3 is determined:
W1=L1+(r+ δ) × ctg α/2 × (1+sin α)；
3, assemble: platform 1 is fixed on lower table, left side lower mold 2, right side lower mold 3 are placed
Between left block 12, right block 13, rotate the left bolt 14 on left block 12, right block 13
With right bolt 15 so that the spacing between left side lower mold 2 and right side lower mold 3 is W1, by plane
Prepreg blank 8 is put on left side lower mold 2 and right side lower mold 3；Place left cushion block 6, right cushion block 7
Outside left side lower mold 2, right side lower mold 3 upper surface；Left briquetting 4, right briquetting 5 are installed pre-in plane
Leaching is expected on blank 8 and left cushion block 6, right cushion block 7；Utilize left bolt 10, right bolt 11 by left briquetting 4,
Right briquetting 5 is fixed；Upper mold 9 is arranged on the forcing press of upper table, and by upper mold 9 and lower mold pair
Just；
4, load: handle forcing press upper table move straight down, movement rate be the 0.1mm/ second～
The 0.5mm/ second, upper mold 9 is made to progress in the cavity between left side lower mold 2 and right side lower mold 3, until
Till upper mold 9 is fitted with prepreg blank completely, plane blank 8 is made to be shaped to hat blank 17.
Embodiment 1
A kind of forming frock of hat composite stringer blank, the hat composite stringer hair of institute's molding
The structure of base 17 is: its cross sectional shape is hat, and this hat composite stringer blank 17 is by crown
The marginal ridge 17c composition of 17a and cap waist 17b and both sides, thickness is 3mm, a length of 1000mm, crown
The width of 17a is 40mm, and the width of cap waist 17b is 40mm, and the width of marginal ridge 17c is 40mm；Cap waist
The medial surface of 17b is 3mm with the transition arc radius of the medial surface junction of crown 17a；Cap waist 17b's
Lateral surface is 3mm with the transition arc radius of the lateral surface junction of marginal ridge 17c, cap waist 17b and marginal ridge
The angle of 17c and the angle of cap waist 17b and crown 17a are 120 °；This hat composite stringer
The forming frock of blank is made up of lower mold and upper mold 9；Lower mold is by platform 1, left side lower mold 2, right side lower mold
3, left briquetting 4, right briquetting 5, left cushion block 6, right cushion block 7, left bolt 10, right bolt 11, left gear
Block 12, right block 13, left bolt 14 and right bolt 15 form；Left side lower mold 2 and right side
The cross section of lower mold 3 for equivalently-sized trapezoidal, the inclined-plane, right side of left side lower mold 2 and right side lower mold 3
Inclined-plane, left side be the forming surface of cap waist 17b, the upper surface of left side lower mold 2 and right side mould 3 is marginal ridge 17c
The forming surface of lower surface, the transition arc radius between inclined-plane, right side and the upper surface of left side lower mold 2 is 3mm,
Transition arc radius between inclined-plane, left side and the upper surface of right side lower mold 3 is 3mm；The right side of left side lower mold 2
Angle between skew back face and upper surface is 120 °, between inclined-plane, left side and the upper surface of right side lower mold 3
Angle is 120 °；Left side lower mold 2 is identical with the height of right side lower mold 3 and long more than hat composite
The height of purlin blank 17, left side lower mold 2 is identical with the width of right side lower mold 3 and is more than hat composite wood
The width of marginal ridge 17c of material stringer blank 17, left side lower mold 2 identical with the length of right side lower mold 3 and
Length more than hat composite stringer blank 17；Left cushion block 6 is equal with left side lower mold 2 length
Rectangular slab, right cushion block 7 is the rectangular slab equal with the length of right side lower mold 3, left cushion block 6 and right cushion block 7
Thickness be 3mm, left cushion block 6 be positioned at left side lower mold 2 upper surface left end, right cushion block 7 be positioned at right side under
The right-hand member of mould 3 upper surface；Left briquetting 4 is the rectangular slab equal with left side lower mold 2 length, left briquetting 4
It is pressed on the upper surface of left cushion block 6 and prepreg plane blank 8, by left bolt 10, left briquetting 4 is pressed
Tightly；Right briquetting 5 is the rectangular slab equal with right side lower mold 3 length, and right briquetting 5 is pressed in right cushion block 7 He
On the upper surface of prepreg plane blank 8, by right bolt 11, right briquetting 5 is compressed；The length of upper mold 9
Degree is equal to the length of left side lower mold 2, and the cross section of upper mold 9 is hat, and the lower surface of upper mold 9 is 17a at the bottom of cap
The forming surface of upper surface, the inclined-plane, left side of upper mold 9 is the forming surface of left side cap waist 17b, the right side of upper mold 9
Skew back face is the forming surface of right side cap waist 17b, the forming surface that upper lower surface is marginal ridge 17c of upper mold 9,
The right flank of upper mold 9 is the forming surface of right side riser 16b left surface；Upper mold 9 left surface and lower surface it
Between and right flank and lower surface between arc radius be 3mm；The inclined-plane, left side of upper mold 9 and lower surface and
Angle between upper surface is 120 °；The transition of the inclined-plane, left side of upper mold 9 and inclined-plane, right side and lower surface
Arc radius is 3mm, and the inclined-plane, left side of upper mold 9 and inclined-plane, right side with the transition arc radius of upper surface are
6mm。
A kind of forming method of hat composite stringer blank, it is characterised in that: use as described above
Forming frock be shaped, the step of molding is:
1, laying prepreg plane blank 8: according to the size of hat composite stringer blank 17, calculates
The size of prepreg plane blank 8, computational methods are: length a=1000mm of plane blank 8, plane
The width b=209.42mm of blank 8, the most in the plane laying rectangle prepreg plane blank 8；
2, spacing W1 between left side lower mold 2 and right side lower mold 3 is determined:
W1=46.5mm；
3, assemble: platform 1 is fixed on lower table, left side lower mold 2, right side lower mold 3 are placed
Between left block 12, right block 13, rotate the left bolt 14 on left block 12, right block 13
With right bolt 15 so that the spacing between left side lower mold 2 and right side lower mold 3 is 46.5mm, will
Plane prepreg blank 8 is put on left side lower mold 2 and right side lower mold 3；Place left cushion block 6, right pad
Block 7 is outside left side lower mold 2, right side lower mold 3 upper surface；Left briquetting 4, right briquetting 5 are installed in flat
Face prepreg blank 8 with on left cushion block 6, right cushion block 7；Utilize left bolt 10, right bolt 11 by left pressure
Block 4, right briquetting 5 are fixed；Upper mold 9 is arranged on the forcing press of upper table, and by upper mold 9 He
Lower mold aligns；
4, load: the upper table handling forcing press moves straight down, and movement rate is the 0.1mm/ second,
Upper mold 9 is made to progress in the cavity between left side lower mold 2 and right side lower mold 3, until upper mold 9 is complete
Till complete and prepreg blank is fitted, plane blank 8 is made to be shaped to hat blank 17.
Embodiment 2
A kind of forming frock of hat composite stringer blank, the hat composite stringer hair of institute's molding
The structure of base 17 is: its cross sectional shape is hat, and this hat composite stringer blank 17 is by crown
The marginal ridge 17c composition of 17a and cap waist 17b and both sides, thickness is 4mm, a length of 1500mm, crown
The width of 17a is 45mm, and the width of cap waist 17b is 45mm, and the width of marginal ridge 17c is 45mm；Cap waist
The medial surface of 17b is 4mm with the transition arc radius of the medial surface junction of crown 17a；Cap waist 17b's
Lateral surface is 4mm with the transition arc radius of the lateral surface junction of marginal ridge 17c, cap waist 17b and marginal ridge
The angle of 17c and the angle of cap waist 17b and crown 17a are 150 °；This hat composite stringer
The forming frock of blank is made up of lower mold and upper mold 9；Lower mold is by platform 1, left side lower mold 2, right side lower mold
3, left briquetting 4, right briquetting 5, left cushion block 6, right cushion block 7, left bolt 10, right bolt 11, left gear
Block 12, right block 13, left bolt 14 and right bolt 15 form；Left side lower mold 2 and right side
The cross section of lower mold 3 for equivalently-sized trapezoidal, the inclined-plane, right side of left side lower mold 2 and right side lower mold 3
Inclined-plane, left side be the forming surface of cap waist 17b, the upper surface of left side lower mold 2 and right side mould 3 is marginal ridge 17c
The forming surface of lower surface, the transition arc radius between inclined-plane, right side and the upper surface of left side lower mold 2 is 4mm,
Transition arc radius between inclined-plane, left side and the upper surface of right side lower mold 3 is 4mm；The right side of left side lower mold 2
Angle between skew back face and upper surface is 150 °, between inclined-plane, left side and the upper surface of right side lower mold 3
Angle is 150 °；Left side lower mold 2 is identical with the height of right side lower mold 3 and long more than hat composite
The height of purlin blank 17, left side lower mold 2 is identical with the width of right side lower mold 3 and is more than hat composite wood
The width of marginal ridge 17c of material stringer blank 17, left side lower mold 2 identical with the length of right side lower mold 3 and
Length more than hat composite stringer blank 17；Left cushion block 6 is equal with left side lower mold 2 length
Rectangular slab, right cushion block 7 is the rectangular slab equal with the length of right side lower mold 3, left cushion block 6 and right cushion block 7
Thickness be 4mm, left cushion block 6 be positioned at left side lower mold 2 upper surface left end, right cushion block 7 be positioned at right side under
The right-hand member of mould 3 upper surface；Left briquetting 4 is the rectangular slab equal with left side lower mold 2 length, left briquetting 4
It is pressed on the upper surface of left cushion block 6 and prepreg plane blank 8, by left bolt 10, left briquetting 4 is pressed
Tightly；Right briquetting 5 is the rectangular slab equal with right side lower mold 3 length, and right briquetting 5 is pressed in right cushion block 7 He
On the upper surface of prepreg plane blank 8, by right bolt 11, right briquetting 5 is compressed；The length of upper mold 9
Degree is equal to the length of left side lower mold 2, and the cross section of upper mold 9 is hat, and the lower surface of upper mold 9 is 17a at the bottom of cap
The forming surface of upper surface, the inclined-plane, left side of upper mold 9 is the forming surface of left side cap waist 17b, the right side of upper mold 9
Skew back face is the forming surface of right side cap waist 17b, the forming surface that upper lower surface is marginal ridge 17c of upper mold 9,
The right flank of upper mold 9 is the forming surface of right side riser 16b left surface；Upper mold 9 left surface and lower surface it
Between and right flank and lower surface between arc radius be 4mm；The inclined-plane, left side of upper mold 9 and lower surface and
Angle between upper surface is 150 °；The transition of the inclined-plane, left side of upper mold 9 and inclined-plane, right side and lower surface
Arc radius is 4mm, and the inclined-plane, left side of upper mold 9 and inclined-plane, right side with the transition arc radius of upper surface are
8mm。
A kind of forming method of hat composite stringer blank, it is characterised in that: use as described above
Forming frock be shaped, the step of molding is:
1, laying prepreg plane blank 8: according to the size of hat composite stringer blank 17, calculates
The size of prepreg plane blank 8, computational methods are: length a=1500mm of plane blank 8, plane
The width b=256.4mm of blank 8, the most in the plane laying rectangle prepreg plane blank 8；
2, spacing W1 between left side lower mold 2 and right side lower mold 3 is determined:
W1=48.2mm；
3, assemble: platform 1 is fixed on lower table, left side lower mold 2, right side lower mold 3 are placed
Between left block 12, right block 13, rotate the left bolt 14 on left block 12, right block 13
With right bolt 15 so that the spacing between left side lower mold 2 and right side lower mold 3 is W1, by plane
Prepreg blank 8 is put on left side lower mold 2 and right side lower mold 3；Place left cushion block 6, right cushion block 7
Outside left side lower mold 2, right side lower mold 3 upper surface；Left briquetting 4, right briquetting 5 are installed pre-in plane
Leaching is expected on blank 8 and left cushion block 6, right cushion block 7；Utilize left bolt 10, right bolt 11 by left briquetting 4,
Right briquetting 5 is fixed；Upper mold 9 is arranged on the forcing press of upper table, and by upper mold 9 and lower mold pair
Just；
4, load: the upper table handling forcing press moves straight down, and movement rate is the 0.2mm/ second,
Upper mold 9 is made to progress in the cavity between left side lower mold 2 and right side lower mold 3, until upper mold 9 is complete
Till fitting with prepreg blank, plane blank 8 is made to be shaped to hat blank 17.
Embodiment 3
A kind of forming frock of hat composite stringer blank, the hat composite stringer hair of institute's molding
The structure of base 17 is: its cross sectional shape is hat, and this hat composite stringer blank 17 is by crown
The marginal ridge 17c composition of 17a and cap waist 17b and both sides, thickness is 5mm, a length of 2000mm, crown
The width of 17a is 50mm, and the width of cap waist 17b is 50mm, and the width of marginal ridge 17c is 50mm；Cap waist
The medial surface of 17b is 5mm with the transition arc radius of the medial surface junction of crown 17a；Cap waist 17b's
Lateral surface is 5mm with the transition arc radius of the lateral surface junction of marginal ridge 17c, cap waist 17b and marginal ridge
The angle of 17c and the angle of cap waist 17b and crown 17a are 135 °；This hat composite stringer
The forming frock of blank is made up of lower mold and upper mold 9；Lower mold is by platform 1, left side lower mold 2, right side lower mold
3, left briquetting 4, right briquetting 5, left cushion block 6, right cushion block 7, left bolt 10, right bolt 11, left gear
Block 12, right block 13, left bolt 14 and right bolt 15 form；Left side lower mold 2 and right side
The cross section of lower mold 3 for equivalently-sized trapezoidal, the inclined-plane, right side of left side lower mold 2 and right side lower mold 3
Inclined-plane, left side be the forming surface of cap waist 17b, the upper surface of left side lower mold 2 and right side mould 3 is marginal ridge 17c
The forming surface of lower surface, the transition arc radius between inclined-plane, right side and the upper surface of left side lower mold 2 is 5mm,
Transition arc radius between inclined-plane, left side and the upper surface of right side lower mold 3 is 5mm；The right side of left side lower mold 2
Angle between skew back face and upper surface is 135 °, between inclined-plane, left side and the upper surface of right side lower mold 3
Angle is 135 °；Left side lower mold 2 is identical with the height of right side lower mold 3 and long more than hat composite
The height of purlin blank 17, left side lower mold 2 is identical with the width of right side lower mold 3 and is more than hat composite wood
The width of marginal ridge 17c of material stringer blank 17, left side lower mold 2 identical with the length of right side lower mold 3 and
Length more than hat composite stringer blank 17；Left cushion block 6 is equal with left side lower mold 2 length
Rectangular slab, right cushion block 7 is the rectangular slab equal with the length of right side lower mold 3, left cushion block 6 and right cushion block 7
Thickness be 5mm, left cushion block 6 be positioned at left side lower mold 2 upper surface left end, right cushion block 7 be positioned at right side under
The right-hand member of mould 3 upper surface；Left briquetting 4 is the rectangular slab equal with left side lower mold 2 length, left briquetting 4
It is pressed on the upper surface of left cushion block 6 and prepreg plane blank 8, by left bolt 10, left briquetting 4 is pressed
Tightly；Right briquetting 5 is the rectangular slab equal with right side lower mold 3 length, and right briquetting 5 is pressed in right cushion block 7 He
On the upper surface of prepreg plane blank 8, by right bolt 11, right briquetting 5 is compressed；The length of upper mold 9
Degree is equal to the length of left side lower mold 2, and the cross section of upper mold 9 is hat, and the lower surface of upper mold 9 is 17a at the bottom of cap
The forming surface of upper surface, the inclined-plane, left side of upper mold 9 is the forming surface of left side cap waist 17b, the right side of upper mold 9
Skew back face is the forming surface of right side cap waist 17b, the forming surface that upper lower surface is marginal ridge 17c of upper mold 9,
The right flank of upper mold 9 is the forming surface of right side riser 16b left surface；Upper mold 9 left surface and lower surface it
Between and right flank and lower surface between arc radius be 5mm；The inclined-plane, left side of upper mold 9 and lower surface and
Angle between upper surface is 135 °；The transition of the inclined-plane, left side of upper mold 9 and inclined-plane, right side and lower surface
Arc radius is 5mm, and the inclined-plane, left side of upper mold 9 and inclined-plane, right side with the transition arc radius of upper surface are
10mm。
A kind of forming method of hat composite stringer blank, it is characterised in that: use as described above
Forming frock be shaped, the step of molding is:
1, laying prepreg plane blank 8: according to the size of hat composite stringer blank 17, calculates
The size of prepreg plane blank 8, computational methods are: length a=2000 of plane blank 8, plane hair
The width b=285.34mm of base 8, the most in the plane laying rectangle prepreg plane blank 8；
2, spacing W1 between left side lower mold 2 and right side lower mold 3 is determined:
W1=57mm；
3, assemble: platform 1 is fixed on lower table, left side lower mold 2, right side lower mold 3 are placed
Between left block 12, right block 13, rotate the left bolt 14 on left block 12, right block 13
With right bolt 15 so that the spacing between left side lower mold 2 and right side lower mold 3 is 57mm, will be flat
Face prepreg blank 8 is put on left side lower mold 2 and right side lower mold 3；Place left cushion block 6, right cushion block
7 outside left side lower mold 2, right side lower mold 3 upper surface；Left briquetting 4, right briquetting 5 are installed pre-in plane
Leaching is expected on blank 8 and left cushion block 6, right cushion block 7；Utilize left bolt 10, right bolt 11 by left briquetting 4,
Right briquetting 5 is fixed；Upper mold 9 is arranged on the forcing press of upper table, and by upper mold 9 and lower mold pair
Just；
4, load: the upper table handling forcing press moves straight down, and movement rate is the 0.3mm/ second,
Upper mold 9 is made to progress in the cavity between left side lower mold 2 and right side lower mold 3, until upper mold 9 is complete
Till fitting with prepreg blank, plane blank 8 is made to be shaped to hat blank 17.
Claims (2)
1. the forming frock of a hat composite stringer blank, the structure of hat composite stringer blank [17] of institute's molding is: its cross sectional shape is hat, this hat composite stringer blank [17] is made up of the marginal ridge [17c] of crown [17a] and cap waist [17b] and both sides, thickness is δ, a length of s, the width of crown [17a] is L1, and the width of cap waist [17b] is L2, and the width of marginal ridge [17c] is L3；The medial surface of cap waist [17b] is r with the transition arc radius of the medial surface junction of crown [17a]；The lateral surface of cap waist [17b] is r with the transition arc radius of the lateral surface junction of marginal ridge [17c], and the angle of cap waist [17b] and the angle of marginal ridge [17c] and cap waist [17b] and crown [17a] is α；The forming frock of this hat composite stringer blank is made up of lower mold and upper mold [9]；Lower mold is made up of platform [1], left side lower mold [2], right side lower mold [3], left briquetting [4], right briquetting [5], left cushion block [6], right cushion block [7], left bolt [10], right bolt [11], left block [12], right block [13], left bolt [14] and right bolt [15]；Left side lower mold [2] and the cross section of right side lower mold [3] are equivalently-sized trapezoidal, the inclined-plane, right side in left side lower mold [2] and the inclined-plane, left side of right side lower mold [3] are the forming surface of cap waist [17b], the upper surface of left side lower mold [2] and right side lower mold [3] is the forming surface of marginal ridge [17c] lower surface, transition arc radius between inclined-plane, right side and the upper surface in left side lower mold [2] is r, and the transition arc radius between inclined-plane, left side and the upper surface of right side lower mold [3] is r；Angle between inclined-plane, right side and the upper surface in left side lower mold [2] is α, and the angle between inclined-plane, left side and the upper surface of right side lower mold [3] is α；Left side lower mold [2] identical with the height of right side lower mold [3] and be more than hat composite stringer blank [17] height, left side lower mold [2] is identical with the width of right side lower mold [3] and the width of marginal ridge [17c] more than hat composite stringer blank [17], and left side lower mold [2] is identical with the length of right side lower mold [3] and is more than the length of hat composite stringer blank [17]；Left cushion block [6] is the rectangular slab equal with left side lower mold [2] length, right cushion block [7] is the rectangular slab equal with the length of right side lower mold [3], the thickness of left cushion block [6] and right cushion block [7] is δ, left cushion block [6] is positioned at the left end of left side lower mold [2] upper surface, and right cushion block [7] is positioned at the right-hand member of right side lower mold [3] upper surface；Left briquetting [4] is the rectangular slab equal with left side lower mold [2] length, and left briquetting [4] is pressed on the upper surface of left cushion block [6] and prepreg plane blank [8], is compressed by left briquetting [4] by left bolt [10]；Right briquetting [5] is the rectangular slab equal with right side lower mold [3] length, and right briquetting [5] is pressed on the upper surface of right cushion block [7] and prepreg plane blank [8], is compressed by right briquetting [5] by right bolt [11]；The length of upper mold [9] is equal to the length of left side lower mold [2], the cross section of upper mold [9] is hat, the lower surface of upper mold [9] is the forming surface of crown [17a] upper surface, the inclined-plane, left side of upper mold [9] is the forming surface in cap waist [17b] left side, the inclined-plane, right side of upper mold [9] is the forming surface on cap waist [17b] right side, the forming surface that upper lower surface is marginal ridge [17c] of upper mold [9], the right flank of upper mold [9] is the forming surface of right side riser [16b] left surface；The upper mold [9] arc radius between left surface and lower surface and between right flank and lower surface is r；Angle between inclined-plane, left side and lower surface and the upper surface of upper mold [9] is α；The transition arc radius of the inclined-plane, left side of upper mold [9] and inclined-plane, right side and lower surface is r, and the transition arc radius of the inclined-plane, left side of upper mold [9] and inclined-plane, right side and upper surface is r+ δ, and unit is mm.
2. the forming method of a hat composite stringer blank, it is characterised in that: using forming frock as claimed in claim 1 to be shaped, the step of molding is:
2.1, laying prepreg plane blank [8]: according to the size of hat composite stringer blank [17], calculate the size of prepreg plane blank [8], computational methods are: length a of prepreg plane blank [8] is equal to length s of hat composite stringer blank [17], the width b=L1+2L2+2L3+2 α r+ α δ of prepreg plane blank [8], laying rectangle prepreg plane blank [8] the most in the plane；
2.2, spacing W1 between left side lower mold [2] and right side lower mold [3] is determined:
W1=L1+ (r+ δ) × ctg α/2 × (1+sin α)；
2.3, assemble: platform [1] is fixed on lower table, left side lower mold [2], right side lower mold [3] are placed between left block [12], right block [13], rotate the left bolt [14] on left block [12], right block [13] and right bolt [15], making the spacing between left side lower mold [2] and right side lower mold [3] is W1, is put in by prepreg plane blank [8] on left side lower mold [2] and right side lower mold [3]；Place left cushion block [6], right cushion block [7] outside left side lower mold [2], right side lower mold [3] upper surface；Left briquetting [4], right briquetting [5] are installed on prepreg plane blank [8] with left cushion block [6], right cushion block [7]；Left bolt [10], right bolt [11] is utilized left briquetting [4], right briquetting [5] to be fixed；Upper mold [9] is arranged on the forcing press of upper table, and upper mold [9] and lower mold are aligned；
2.4, load: the upper table handling forcing press moves straight down, movement rate is 0.1mm/ second～0.5mm/ second, upper mold [9] is made to progress in the cavity between left side lower mold [2] and right side lower mold [3], till and prepreg blank complete until upper mold [9] is fitted, prepreg plane blank [8] is made to be shaped to hat composite stringer blank [17].
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| CN107791428B (en) * | 2017-11-20 | 2023-06-27 | 常州市新创智能科技有限公司 | Hat type stringer production equipment and production method thereof |
| CN110561786B (en) * | 2019-09-19 | 2020-10-20 | 常州新创航空科技有限公司 | Hot die pressing molding process for composite hat-shaped stringer prepreg |
| CN110561788B (en) * | 2019-09-19 | 2020-11-03 | 常州新创航空科技有限公司 | Long purlin forming device of combined material cap type |
| CN113561455A (en) * | 2020-04-29 | 2021-10-29 | 中国商用飞机有限责任公司 | Method for positioning plane material sheet in hat-shaped stringer thermal diaphragm process |
| CN111746003B (en) * | 2020-07-03 | 2021-03-16 | 常州新创航空科技有限公司 | Stringer hot-die-pressing preforming equipment and forming method thereof |
| CN113246500B (en) * | 2021-06-30 | 2022-01-25 | 成都飞机工业（集团）有限责任公司 | Preparation device of composite material cap part with stop block and operation method of preparation device |
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| US5071338A (en) * | 1987-09-08 | 1991-12-10 | United Technologies Corporation | Tool for forming complex composite articles |
| CN101585236A (en) * | 2008-05-23 | 2009-11-25 | 珠海市恒基业安全头盔有限公司 | Molding technology of composite material special product |
| CN101391488B (en) * | 2008-08-22 | 2010-06-09 | 成都飞机工业（集团）有限责任公司 | Curing formation method for non-flat plate composite product and shaping mould |
| CN101791821B (en) * | 2010-04-08 | 2011-09-14 | 中国航空工业集团公司北京航空制造工程研究所 | Forming equipment of large size composite stringer |
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