CN109127818B - A kind of continuous rolling manufacturing process of lateral bending shape curved surface part - Google Patents
A kind of continuous rolling manufacturing process of lateral bending shape curved surface part Download PDFInfo
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- CN109127818B CN109127818B CN201811351276.9A CN201811351276A CN109127818B CN 109127818 B CN109127818 B CN 109127818B CN 201811351276 A CN201811351276 A CN 201811351276A CN 109127818 B CN109127818 B CN 109127818B
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- working roll
- roll
- lateral bending
- curved surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
Abstract
The present invention provides a kind of continuous rolling manufacturing process of lateral bending shape curved surface part, between the top working roll with male rotor profile face and the bottom working roll with recessed profile type face, formation middle line is curve shape and width is the roll gap of non-equivalent distribution, as top working roll and bottom working roll are around the rotation of respective axis, plate is shaped by continuous rolling；By rationally designing roll gap width and roll gap shape between upper and lower roll profile, plate after making roll-in is while obtaining cross sectional shape consistent with roll gap middle line, in the direction of the width by chrominance signal, generate the elongation of uneven distribution, to form continuously lateral bending, lateral bending shape three-dimension curved surface part is finally obtained；Forming force needed for this method is small, device structure is simple, low cost, is able to achieve efficient, the inexpensive processing of lateral bending shape curved surface part, and can improve the utilization rate of material.
Description
Technical field
The present invention relates to a kind of continuous rolling manufacturing process of lateral bending shape curved surface part, belong to Metal Forming field,
Low cost, Quick-forming suitable for lateral bending shape three-dimension curved surface part.
Background technique
Three-dimension curved surface part is widely used in the manufacturing fields such as aircraft, steamer, bullet train, pressure vessels for the chemical industry, builds in the modern times
The demand of Double curve degree curved surface is also increasing in building structure and sculpture for city.In three-dimension curved surface part of various shapes,
There are biggish difficulty with processing for the forming of large-scale lateral bending shape curved surface part.Since curved surface has biggish lateral bending, it is drawn into
Shape method is not suitable for such part.In addition, these curved surface parts are usually single-piece, small lot production, using traditional mold
The cost of manufacturing process, mold manufacture is too high, and needs large-scale former.With bending curved surface part in opposite side in engineering
Demand it is more and more, urgent need develop quick, inexpensive new forming technique.
Summary of the invention
The present invention is the problems such as overcoming forming present in existing forming mode big, at high cost with difficulty of processing, to provide
A kind of continuous rolling manufacturing process makes roller by rationally designing roll gap width and roll gap shape between upper and lower roll machined surface profile
While plate after pressure obtains required cross sectional shape, plate generates upper uneven point in the width direction by chrominance signal
The elongation of cloth finally obtains the three-dimension curved surface part of lateral bending shape to form continuously lateral bending.
Above-mentioned purpose of the invention is achieved through the following technical solutions:
A kind of continuous rolling manufacturing process of lateral bending shape curved surface part, to have the top working roll and band in male rotor profile face
The bottom working roll for having recessed profile type face is forming tool, and it is curved shape that middle line is formed between top working roll and bottom working roll
Shape and width are the roll gap of non-equivalent distribution, by top working roll and bottom working roll around respective axis rotation to plate into
The forming of row continuous rolling, the plate after making roll-in is while obtaining cross sectional shape consistent with the roll gap middle line of roll gap, along width
Direction is spent by chrominance signal, generates the elongation of uneven distribution, is bent and is become so as to cause the plate continuously lateral after roll-in
Shape ultimately forms lateral bending shape curved surface part, which is characterized in that specific step is as follows for this method:
Step 1: according to the geometric parameter of lateral bending shape curved surface part, determining the cross-section curve z=g of lateral bending shape curved surface part
(x), the radius of curvature R of the outer rim of the thickness t of lateral bending shape curved surface part and lateral bending shape curved surface part；X- reference axis therein with it is upper
Working roll is parallel with the axis direction of bottom working roll, z- reference axis along lateral bending shape curved surface part short transverse；
Step 2: according to the geometric parameter of lateral bending shape curved surface part, designing the geometric parameter of plate, the width b of plate is by formula
(1) it calculates, the thickness H of plate is calculated by formula (2)；
Wherein, x1For the x coordinate of the left end point of the cross-section curve z=g (x) of lateral bending shape curved surface part, x2It is bent for lateral bending shape
The x coordinate of the right endpoint of the cross-section curve z=g (x) of surface parts；
Step 3: according to the geometric shape parameters of lateral bending shape curved surface part and plate, designing the upper work for rolling formation
Make the male rotor profile face of roller and the recessed profile type face of bottom working roll:
1) the coordinate x of the contour curve in the male rotor profile face of top working rollT、zTCalculation formula are as follows:
Wherein α is the tangential direction of roll gap middle line and the angle of x- reference axis, and has α=arctg [g'(x)]；
2) the coordinate x of the contour curve in the recessed profile type face of bottom working rollB、zBCalculation formula are as follows:
Step 4: top working roll is designed according to the contour curve in the male rotor profile face of formula (3) determining top working roll
Bottom working roll is designed according to the contour curve in the recessed profile type face of formula (4) determining bottom working roll in male rotor profile face
Recessed profile type face, make the roll gap formed between the male rotor profile face of top working roll and the recessed profile type face of bottom working roll its
The distribution of width non-equivalent, and the curve of the roll gap middle line of roll gap is curve z=g (x)；In top working roll and bottom working roll around each
During axis rotation, continuous rolling is carried out to plate, the plate after making roll-in obtains and the consistent section of roll gap middle line
Shape, meanwhile, the plate after roll-in generates the elongation of uneven distribution in the width direction, continuously lateral bending in forming face,
Ultimately form the lateral bending shape curved surface part of lateral bending shape.
Further technical solution includes:
Plate carries out chilling roller pressing formation at room temperature, or to progress hot-rolling pressing formation after plate high-temperature heating.
The top working roll is upper rigid working roll, and the bottom working roll is lower rigid working roll.It is determined by formula
The processing of male rotor profile face on upper rigid working roll, the recessed profile type face processing determined by formula (4) is in lower rigid work
Make on roller.
The top working roll is upper flexible working roller, and the bottom working roll is lower flexible working roller.Upper flexible working
Roller and lower flexible working roller can minor deflection bending, and can be rotated around respectively axis after bending.It is determined by formula (3)
Male rotor profile face is obtained by the chamfered shape of flexible working roller in up-regulation shape institutional adjustment, is determined by formula (4) recessed
Shape contoured profiles are obtained by lowering the chamfered shape of flexible working roller under shape institutional adjustment.
Beneficial effects of the present invention are as follows compared with existing forming mode:
The present invention provides a kind of effective way to solve single-piece, the small lot processing problems of lateral bending shape curved surface part.This
Kind of rolling formation method is thinned and lateral bending deformation is established based on uneven, have the characteristics that continuously, partial plastic forming, institute
The forming force needed is small；Using upper and lower two working rolls as forming tool, device structure is simple, low cost, is able to achieve lateral bending
Efficient, the inexpensive processing of shape curved surface part, and the utilization rate of material can be improved, and since plate is in compression thinning process
Biggish plastic deformation occurs for material, and therefore, the rebound of this curved surface forming method is small, can obtain preferable forming effect.
The manufacturing process can satisfy the demand of Metal Forming field opposite side bending curved surface part New Machining Technology, have extensive
Application prospect.
Detailed description of the invention
Fig. 1 is a kind of forming process signal of continuous rolling manufacturing process of lateral bending shape curved surface part of the present invention
Figure；
Fig. 2 is the sectional view of plate, i.e. the sectional view in the direction C-C in Fig. 1；
Fig. 3 is lateral bending shape curved surface part schematic diagram；
Fig. 4 is the sectional view in lateral bending shape curved surface part direction D-D along Fig. 3；
The sectional view of the roll gap between top working roll and bottom working roll when Fig. 5 is rolling formation, the i.e. direction A-A in Fig. 1
Sectional view；
The transverse cross-sectional view of top working roll, bottom working roll and plate when Fig. 6 is rolling formation, i.e. the direction B-B is cutd open in Fig. 1
Face figure；
Fig. 7 is the rolling formation process schematic using rigid working roll；
Fig. 8 is the rolling formation process schematic using flexible working roller；
In figure: 1. top working rolls, 2. bottom working rolls, 3. plates, 4. lateral bending shape curved surface parts, the plate after 4a. roll-in, 5.
Outer rim, 6. male rotor profile faces, 7. recessed profile type faces, 8. roll gap, 9. roll gap middle lines, rigid working roll on 10., 11. is lower rigid
Sex work roller, flexible working roller on 12., 13. lower flexible working rollers, 14. up-regulation shape mechanisms, 15. lower shape mechanisms.
Specific embodiment
The course of work and implementation step of the invention are further illustrated with reference to the accompanying drawing.
A kind of continuous rolling manufacturing process of lateral bending shape curved surface part, to have 1 He of top working roll in male rotor profile face
Bottom working roll 2 with recessed profile type face is forming tool (as shown in Fig. 1, Fig. 6), top working roll 1 and bottom working roll 2 it
Between formed middle line be curve shape and width be non-equivalent distribution roll gap 8 (as shown in Figure 5), by top working roll 1 under
Working roll 2 carries out continuous rolling forming (as shown in Figure 6) to plate 3 around the rotation of respective axis, and the plate 4a after making roll-in exists
While obtaining the roll gap 9 consistent cross sectional shape of middle line with roll gap 8, in the width direction by chrominance signal, generate uneven
The elongation of distribution ultimately forms lateral bending shape curved surface part 4 so as to cause the plate 4a continuously lateral bending deformation after roll-in
(as shown in Figure 3, Figure 4).
Plate 3 can carry out chilling roller pressing formation at room temperature, and hot-rolling pressing formation is carried out after can also being heated at high temperature.
As shown in fig. 7, top working roll 1 is upper rigid working roll 10, bottom working roll 2 is lower rigid working roll 11.By formula (3)
On upper rigid working roll 10, the processing of recessed profile type face 7 determined by formula 4 exists for the processing of male rotor profile face 6 determined
On lower rigidity working roll 11.In addition, bottom working roll 2 can also as shown in figure 8, top working roll 1 is also possible to flexible working roller 12
To be lower flexible working roller 13.Upper flexible working roller 12 and lower flexible working roller 13 can minor deflection bending, and can be around each
It is rotated from axis after bending.The male rotor profile face 6 determined by formula (3) adjusts upper flexible working by up-regulation shape mechanism 14
The chamfered shape of roller 12 is passed through by the recessed profile type face 7 that formula (4) is determined to obtain and lowers the lower flexible work of the adjustment of shape mechanism 15
Make the chamfered shape of roller 13 to obtain.
Specific step is as follows for a kind of continuous rolling manufacturing process of lateral bending shape curved surface part of the present invention:
Step 1: lateral bending shape curved surface part 4 is determined refering to Fig. 3, Fig. 4 according to the geometric parameter of lateral bending shape curved surface part 4
The radius of curvature R of the outer rim 5 of cross-section curve z=g (x), the thickness t of lateral bending shape curved surface part 4 and lateral bending shape curved surface part 4；
X- reference axis therein is parallel with the axis direction of top working roll 1 and bottom working roll 2, and z- reference axis is along lateral bending shape curved surface part
4 short transverse；
Step 2: according to the geometric parameter of lateral bending shape curved surface part 4, the geometric parameter of plate 3 is designed, referring to Fig.2, plate 3
Width b calculated by formula (1), the thickness H of plate 3 is calculated by formula (2)；
Wherein, x1For the x coordinate of the left end point of the cross-section curve z=g (x) of lateral bending shape curved surface part 4, x2For lateral bending shape
The x coordinate of the right endpoint of the cross-section curve z=g (x) of curved surface part 4；
Step 3: according to the geometric shape parameters of lateral bending shape curved surface part 4 and plate 3, designing for rolling formation
The male rotor profile face 6 of working roll 1 and the recessed profile type face 7 (as shown in Figure 5) of bottom working roll 2:
1) the coordinate x of the contour curve in the male rotor profile face 6 of top working roll 1T、zTCalculating formula are as follows:
Wherein α is the tangential direction of the middle line 9 of roll gap 8 and the angle of x- reference axis, and has α=arctg [g'(x)]；
2) the coordinate x of the contour curve in the recessed profile type face 7 of bottom working roll 2B、zBCalculating formula are as follows:
Step 4: top working roll is designed according to the contour curve in the male rotor profile face 6 of formula (3) determining top working roll 1
1 male rotor profile face 6 determines the contour curve in the recessed profile type face 7 of bottom working roll 2 according to formula (4) to design lower work
The recessed profile type face 7 of roller 2 makes shape between the male rotor profile face 6 of top working roll 1 and the recessed profile type face 7 of bottom working roll 2
At roll gap 8 the distribution of width non-equivalent, and the curve of the roll gap middle line 9 of roll gap 8 is curve z=g (x) (as shown in Figure 5).
During top working roll 1 and bottom working roll 2 are rotated around respective axis, continuous rolling is carried out to plate 3, the plate after making roll-in
Expect 4a acquisition and the consistent cross sectional shape of roll gap middle line 9, meanwhile, the plate 4a after making roll-in generates uneven point in the width direction
The elongation of cloth, continuously lateral bending, ultimately forms the lateral bending shape curved surface part 4 of lateral bending shape in forming face.
Claims (4)
1. a kind of continuous rolling manufacturing process of lateral bending shape curved surface part, with male rotor profile face top working roll (1) and
Bottom working roll (2) with recessed profile type face is forming tool, between top working roll (1) and bottom working roll (2) in formation
Line is curve shape and width is the roll gap (8) of non-equivalent distribution, by top working roll (1) and bottom working roll (2) around respective
The rotation of axis carries out continuous rolling forming to plate (3), and the plate (4a) after making roll-in is in obtaining the roll gap with roll gap (8)
While line (9) consistent cross sectional shape, in the width direction by chrominance signal, the elongation of uneven distribution is generated, thus
Plate (4a) continuously lateral bending deformation after leading to roll-in, ultimately forms lateral bending shape curved surface part (4), which is characterized in that this
Specific step is as follows for method:
Step 1: according to the geometric parameter of lateral bending shape curved surface part (4), determining the cross-section curve z of lateral bending shape curved surface part (4)
The radius of curvature R of the outer rim (5) of=g (x), the thickness t of lateral bending shape curved surface part (4) and lateral bending shape curved surface part (4)；It is therein
X- reference axis is parallel with the axis direction of top working roll (1) and bottom working roll (2), and z- reference axis is along lateral bending shape curved surface part
(4) short transverse；
Step 2: according to the geometric parameter of lateral bending shape curved surface part (4), designing the geometric parameter of plate (3), the width of plate (3)
B is calculated by formula (1), and the thickness H of plate (3) is calculated by formula (2)；
Wherein, x1For the x coordinate of the left end point of the cross-section curve z=g (x) of lateral bending shape curved surface part (4), x2It is bent for lateral bending shape
The x coordinate of the right endpoint of the cross-section curve z=g (x) of surface parts (4)；
Step 3: according to the geometric shape parameters of lateral bending shape curved surface part (4) and plate (3), designing for rolling formation
The male rotor profile face (6) of working roll (1) and the recessed profile type face (7) of bottom working roll (2):
1) the coordinate x of the contour curve in the male rotor profile face (6) of top working roll (1)T、zTCalculating formula are as follows:
Wherein α is the tangential direction of the middle line (9) of roll gap (8) and the angle of x- reference axis, and has α=arctg [g'(x)]；
2) the coordinate x of the contour curve in the recessed profile type face (7) of bottom working roll (2)B、zBCalculating formula are as follows:
Step 4: top working roll is designed according to the contour curve in the male rotor profile face (6) of formula (3) determining top working roll (1)
(1) male rotor profile face (6), according to formula (4) determine bottom working roll (2) recessed profile type face (7) contour curve come
The recessed profile type face (7) for designing bottom working roll (2) makes the male rotor profile face (6) and bottom working roll (2) of top working roll (1)
Recessed profile type face (7) between the width non-equivalent distribution of roll gap (8) that is formed, and the roll gap middle line (9) of roll gap (8)
Curve is curve z=g (x)；During top working roll (1) and bottom working roll (2) are rotated around respective axis, to plate (3)
Carry out continuous rolling, plate (4a) after making roll-in obtain with roll gap middle line (9) consistent cross sectional shape, while after making roll-in
Plate (4a) generates the elongation of uneven distribution in the width direction, and continuously lateral bending, ultimately forms lateral bending shape in forming face
Curved surface part (4).
2. a kind of continuous rolling manufacturing process of lateral bending shape curved surface part according to claim 1, which is characterized in that plate
(3) chilling roller pressing formation is carried out at room temperature, or to progress hot-rolling pressing formation after plate (3) heating.
3. a kind of continuous rolling manufacturing process of lateral bending shape curved surface part according to claim 1, which is characterized in that described
Top working roll (1) be upper rigid working roll (10), the bottom working roll (2) is lower rigid working roll (11)；It will be by formula (3)
Male rotor profile face (6) processing determined, will be by recessed profile type face that formula (4) are determined on upper rigid working roll (10)
(7) processing is on lower rigid working roll (11).
4. a kind of continuous rolling manufacturing process of lateral bending shape curved surface part according to claim 1, which is characterized in that described
Top working roll (1) be upper flexible working roller (12), the bottom working roll (2) is lower flexible working roller (13)；Upper flexibility work
Make roller (12) and lower flexible working roller (13) can minor deflection bending, and can be rotated around respectively axis after bending；By formula
(3) the male rotor profile face (6) determined by up-regulation shape mechanism (14) adjustment on flexible working roller (12) chamfered shape come
It obtains, the recessed profile type face (7) determined by formula (4) adjusts the wheel of lower flexible working roller (13) by lowering shape mechanism (15)
Profile shape obtains.
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