CN114985596A - Mold design method for improving multi-degree-of-freedom loading formability of thin-wall high-rib forked ring - Google Patents
Mold design method for improving multi-degree-of-freedom loading formability of thin-wall high-rib forked ring Download PDFInfo
- Publication number
- CN114985596A CN114985596A CN202210591487.XA CN202210591487A CN114985596A CN 114985596 A CN114985596 A CN 114985596A CN 202210591487 A CN202210591487 A CN 202210591487A CN 114985596 A CN114985596 A CN 114985596A
- Authority
- CN
- China
- Prior art keywords
- rib
- thin
- wall high
- die
- ring
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
-
- 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
- B21D53/00—Making other particular articles
- B21D53/16—Making other particular articles rings, e.g. barrel hoops
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a mold design method for improving the multi-degree-of-freedom loading formability of a thin-wall high-rib forked ring, which comprises the following steps of: s1, designing a thin-wall high-rib forked ring multi-freedom-degree loading forming device: the multi-degree-of-freedom loading forming device for the thin-wall high-rib forked ring comprises a rolling die, a restricting die and a blank, wherein the rolling die performs autorotation motion around the axis of the rolling die and simultaneously performs feeding motion along the axial direction, and the restricting die performs rotary motion around the axis of the restricting die; s2, establishing a design space coordinate system of the thin-wall high-rib forked ring multi-freedom-degree loading forming die; s3, establishing a thin-wall high-rib forked ring multi-freedom-degree loading forming die molded surface; and S4, judging the interference relationship between the molding surface of the rolling die and the molding surface of the thin-wall high-rib forked ring. The invention can judge whether the rolling die and the thin-wall high-rib Y-shaped ring interfere in the multi-freedom-degree loading forming process, determine the position and the shape of the interference region of the rolling die and the thin-wall high-rib Y-shaped ring, and predict the region for reducing the precision and the surface quality of the thin-wall high-rib Y-shaped ring.
Description
Technical Field
The invention relates to the field of forming and manufacturing of thin-wall high-reinforcement forked rings, in particular to a mold design method for improving multi-freedom-degree loading formability of thin-wall high-reinforcement forked rings.
Background
The thin-wall high-rib forked ring is an important bearing structural member of a fuel storage tank of a carrier rocket, is used for connecting a thin-wall straight cylinder section of the fuel storage tank with a thin-wall spherical tank bottom, is also used for connecting the fuel storage tank with a rocket body, and has the performance of directly influencing the launching success rate and the carrying capacity of the carrier rocket. The thin-wall high-rib forked ring has the characteristics of thin wall, large diameter and forked shaft section, and service conditions are very harsh. Complex geometric configurations and severe service conditions put higher demands on the manufacturing technology, and high-performance and high-precision manufacturing is a hot spot of current research.
The multi-degree-of-freedom loading forming process is a continuous local plastic forming method, and can remarkably improve the mechanical property and the manufacturing efficiency of the thin-wall high-rib Y-shaped ring. However, the thin-wall high-rib forked ring has a complex geometric structure, and the rolling die has complex spatial motion, so that the matching relationship between the profile of the thin-wall high-rib forked ring and the surface of the rolling model is very complex. The unreasonable design of the rolling die can cause the interference between the profile of the rolling die and the profile of the thin-wall high-rib forked ring in the multi-degree-of-freedom loading forming process, thereby not only reducing the forming precision and the surface quality of the thin-wall high-rib forked ring, but also even causing the multi-degree-of-freedom loading forming process to be impossible. Therefore, a mold design method for improving the multi-degree-of-freedom loading formability of the thin-wall high-rib forked ring needs to be provided to solve the problems.
Disclosure of Invention
The invention aims to provide a die design method for improving the multi-degree-of-freedom loading forming performance of a thin-wall high-rib forked ring, which can improve the design quality and precision of a die and simultaneously avoid interference in the multi-degree-of-freedom loading forming process.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method for designing the mold for improving the multi-degree-of-freedom loading formability of the thin-wall high-rib forked ring is constructed, the thin-wall high-rib forked ring is an annular component with a shaft section in a forked shape and consists of an upper rib, a lower rib and side ribs, and the method for designing the mold comprises the following steps:
s1, designing a thin-wall high-rib forked ring multi-freedom-degree loading forming device: the multi-degree-of-freedom loading forming device for the thin-wall high-rib forked ring comprises a rolling die, a restricting die and a blank, wherein the rolling die performs autorotation motion around the axis of the rolling die and simultaneously performs feeding motion along the axial direction, the restricting die performs rotary motion around the axis of the restricting die, the blank is a rectangular-section thin-wall ring blank, and the blank is placed in the restricting die and performs rotary motion around the axis of the restricting die; under the combined action of the rolling die and the restricting die, the blank is subjected to continuous local plastic deformation, and the rectangular section of the blank gradually changes to form a branch shape, so that a thin-wall high-strength fork-shaped ring is obtained;
s2, establishing a design space coordinate system of the thin-wall high-rib forked ring multi-freedom-degree loading forming die: the method comprises the following steps of establishing a three-dimensional space coordinate system O-xyz by taking the axis of a thin-wall high-rib Y-shaped ring as a z-axis, taking the plane where the top surface of an upper rib is positioned as an xy plane, taking the intersection point of the z-axis and the xy plane as a coordinate origin O and taking any straight line passing through the O point in the xy plane as an x-axis;
s3, establishing a thin-wall high-rib forked ring multi-freedom-degree loading forming die molded surface: in an xOz plane of a three-dimensional space coordinate system O-xyz, taking a curve formed by connecting the contour line of the inner cylindrical surface of the upper rib of the thin-wall high-rib forked ring and the contour line of the upper surface of the side rib as a bus, and taking a straight line which is above the bus and has an included angle alpha with an x axis as a rotating axis, and rotating the bus for one circle to form a rolling die profile; taking a curve formed by connecting the lower surface contour line of the side rib, the surface contour line of the lower rib and the outer cylindrical surface contour line of the upper rib as a bus, taking the axis of the thin-wall high-rib forked ring as a rotating shaft, and rotating the bus for one circle to form a restricted mold surface;
and S4, judging the interference relationship between the molding surface of the rolling die and the molding surface of the thin-wall high-rib forked ring.
According to the scheme, the step S4 includes the following steps:
s41, establishing space equation F of the inner cylindrical surface of the upper rib of the thin-wall high-rib forked ring 1 (x, y, z) as shown in formula (1):
in the formula, R is the radius of the inner cylindrical surface of the upper rib of the thin-wall high-rib forked ring, and h is the axial height of the inner cylindrical surface of the upper rib;
s42, establishing a space equation F of the maximum excircle contour line of the rolling die 2 (x, y, z), as shown in equation (2):
wherein r is the maximum external circle outline radius of the rolling die, (A, B, C) are axial vectors of the rolling die, (x) 0 ,y 0 ,z 0 ) Is the maximum excircle outline central point O of the rolling die 1 Determining the coordinate according to the geometrical relationship between the rolling die and the thin-wall high-rib Y-shaped ring in the step S3 to determine x 0 ＝R-r·sinα，y 0 ＝0，z 0 ＝h+r·cosα；
S43, projecting the rib inner cylindrical surface on the thin-wall high-rib forked ring in the step S41 to the xOy plane in the coordinate system O-xyz established in the step S1 to obtain a projection curve l 1 The equation is shown in formula (3):
y 1 2 ＝R 2 -x 2 (3)
s44, in the coordinate system O-xyz established in the step S1, projecting the maximum external circle contour line of the rolling die in the step S42 into the xOy plane to obtain a projection curve l 2 The equation is shown in formula (4):
s45, establishing the interference judgment criterion of the rolling die profile and the thin-wall high-rib forked ring profile as follows: if l 1 、l 2 No other intersection points except the tangent point exist, the rolling die and the thin-wall high-rib Y-shaped ring cannot interfere; if l 1 、l 2 If other intersection points except the tangent point exist, the rolling die and the thin-wall high-rib Y-shaped ring interfere with each other, and therefore a judgment criterion that no interference occurs between the rolling die and the thin-wall high-rib Y-shaped ring is established, as shown in a formula (5):
where x ∈ (x) 0 -r·sinα,x 0 +r·sinα)。
According to the scheme, the method further comprises the step S5 of establishing a correlation model among R, alpha and R according to the judgment criterion that no interference occurs between the rolling die and the thin-wall high-rib forked ring established in the step S45, as shown in a formula (6); determining the effective selection range of the sizes r and alpha of the high-precision rolling roller according to a formula (6) to obtain a high-precision rolling die which does not interfere with the thin-wall high-rib forked ring;
r≤R·sinα (6)。
according to the scheme, the range of alpha in the step S3 is
In the method for designing the die for improving the multi-degree-of-freedom loading formability of the thin-wall high-rib forked ring, the invention provides a method for designing the die for improving the multi-degree-of-freedom loading formability of the thin-wall high-rib forked ring.
The invention relates to a design method of a die for improving the multi-freedom-degree loading formability of a thin-wall high-rib forked ring.
The mold design method for improving the multi-degree-of-freedom loading formability of the thin-wall high-rib forked ring has the following beneficial effects:
(1) by the die design method for improving the multi-freedom-degree loading formability of the thin-wall high-rib Y-shaped ring, whether the rolling die and the thin-wall high-rib Y-shaped ring interfere with each other in the multi-freedom-degree loading forming process is judged;
(2) determining the positions and shapes of the interference areas of the rolling die and the thin-wall high-rib forked ring by calculating the geometrical relationship of the projection of the maximum outer contour line of the rolling die and the inner contour line of the rib inner cylindrical surface on the thin-wall high-rib forked ring;
(3) by the die design method for improving the multi-degree-of-freedom loading formability of the thin-wall high-rib Y-shaped ring, the area for reducing the precision and the surface quality of the thin-wall high-rib Y-shaped ring can be predicted.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of a thin-walled high-rib forked ring;
FIG. 2 is a schematic view of a multiple degree of freedom loading forming process;
FIG. 3 is a schematic view of a multiple degree of freedom loading forming die design;
FIG. 4 is a schematic view of the dimensional parameters of the rolling die;
FIG. 5a is a schematic diagram of a projection curve without interference;
FIG. 5b is a schematic diagram of the interference generated by the projected curve;
FIG. 6 is a schematic view of the position of the interference zone;
FIG. 7 is an enlarged schematic view of the interference region;
FIG. 8 is a schematic view of the design of the dimensions of the rolling die.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
The inner diameter R of the thin-wall high-rib forked ring to be formed is 145mm, the wall thickness is 5mm, the rib height is 20mm, and the included angle between the side rib and the upper rib is
The embodiment of the invention provides a mold design method for improving the multi-degree-of-freedom loading formability of a thin-wall high-rib forked ring, which comprises the following steps:
s1, establishing a three-dimensional space coordinate system O-xyz by taking the axis of the thin-wall high-rib forked ring as a z-axis, taking the plane where the top surface of the upper rib is located as an xy plane, taking the intersection point of the z-axis and the xy plane as a coordinate origin O and taking any straight line passing through the O point in the xy plane as an x-axis;
s2, in the xOz plane of the three-dimensional space coordinate system O-xyz, taking the curve formed by connecting the contour line of the inner cylindrical surface of the upper rib of the thin-wall high rib forked ring and the contour line of the upper surface of the side rib as a generatrix and the included angle between the generatrix and the x axis as
The straight line of the bus is a rotating shaft, and the bus is rotated for one circle to form a rolling die molded surface; taking a curve formed by connecting the lower surface contour line of the side rib, the surface contour line of the lower rib and the outer cylindrical surface contour line of the upper rib as a bus, taking the axis of the thin-wall high-rib forked ring as a rotating shaft, and rotating the bus for one circle to form a restricted mold surface;
s3, in the coordinate system O-xyz established in the step S1, projecting the rib inner cylindrical surface on the thin-wall high-rib forked ring into the xOy plane to obtain a projection curve l 1 Projecting the maximum excircle contour line of the rolling die into an xOy plane to obtain a projection curve l 2 (ii) a If l 1 、l 2 No other intersection points except the tangent point exist, so that the rolling die and the thin-wall high-rib forked ring cannot interfere; if l 1 、l 2 If other intersection points except the tangent point exist, the rolling die and the thin-wall high-rib forked ring can interfere with each other; the method for determining that the interference between the rolling die and the thin-wall high-rib forked ring does not occur comprises the following steps of:
s31, establishing a space equation F of the inner cylindrical surface of the upper rib of the thin-wall high-rib forked ring 1 (x, y, z) as shown in formula (1):
in the formula, R is the radius of the inner cylindrical surface of the upper rib of the thin-wall high-rib forked ring, and the value of h is the axial height of the inner cylindrical surface of the upper rib;
s32, taking the radius of the maximum excircle contour of the rolling die as 130mm, and establishing a space equation F of the maximum excircle contour of the rolling die 2 (x, y, z), as shown in equation (2):
wherein r is the radius of the maximum excircle outline of the rolling die, and (A, B, C) are axial vectors of the rolling die, namely (1,0,1), (x) 0 ,y 0 ,z 0 ) Is the maximum excircle outline central point O of the rolling die 1 According to the step S2, the rolling die and the thin-wall high rib forkGeometric relationship of the ring, determining x 0 ＝R-r·sinα＝53.07，y 0 ＝0，z 0 ＝h+r·cosα＝101.92；
S33, establishing a projection curve l of the rib inner cylindrical surface on the thin-wall high-rib forked ring in the xOy plane 1 The equation is shown in formula (3):
y 1 2 ＝145 2 -x 2 (3)
s34, establishing a projection curve l of the maximum excircle contour line of the rolling die in the xOy plane 2 The equation is shown in formula (4):
y 2 2 ＝r 2 -2×(x-53.07) 2 (4)
s35, establishing a judgment equation that interference does not occur between the rolling die and the thin-wall high-rib forked ring, wherein the judgment equation is shown as a formula (5):
D＝y 1 2 -y 2 2 ＝x 2 -212.28x+4231.14>0 (5)
wherein x is epsilon (-38.85,145); can judge when
When r is 130mm, interference can occur between the rolling die and the thin-wall high-rib forked ring;
s4, establishing a correlation model among R, alpha and R according to a judgment equation which is established in S35 and does not interfere between the rolling die and the thin-wall high-rib Y-shaped ring, and determining the effective selection range of the sizes R and alpha of the rolling roller; the correlation model among R, α, and R is shown in equation (6):
r≤R·sinα＝102.53 (6)。
while the present invention has been described with reference to the particular illustrative embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and equivalents thereof, which may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A design method of a die for improving the multi-degree-of-freedom loading formability of a thin-wall high-rib forked ring is an annular component with a shaft section in a forked shape and consists of an upper rib, a lower rib and a side rib, and is characterized by comprising the following steps:
s1, designing a thin-wall high-rib forked ring multi-freedom-degree loading forming device: the multi-degree-of-freedom loading forming device for the thin-wall high-rib forked ring comprises a rolling die, a restricting die and a blank, wherein the rolling die performs autorotation motion around the axis of the rolling die and simultaneously performs feeding motion along the axial direction, the restricting die performs rotary motion around the axis of the restricting die, the blank is a rectangular-section thin-wall ring blank, and the blank is placed in the restricting die and performs rotary motion around the axis of the restricting die; under the combined action of the rolling die and the restricting die, the blank is subjected to continuous local plastic deformation, and the rectangular section of the blank gradually changes to form a branch shape, so that a thin-wall high-strength fork-shaped ring is obtained;
s2, establishing a design space coordinate system of the thin-wall high-rib forked ring multi-freedom-degree loading forming die: the method comprises the following steps of establishing a three-dimensional space coordinate system O-xyz by taking the axis of a thin-wall high-rib forked ring as a z-axis, taking the plane where the top surface of an upper rib is located as an xy plane, taking the intersection point of the z-axis and the xy plane as a coordinate origin O and taking any straight line passing through the O point in the xy plane as an x-axis;
s3, establishing a thin-wall high-rib forked ring multi-freedom-degree loading forming die molded surface: in an xOz plane of a three-dimensional space coordinate system O-xyz, taking a curve formed by connecting the contour line of the inner cylindrical surface of the upper rib of the thin-wall high-rib forked ring and the contour line of the upper surface of the side rib as a bus, and taking a straight line which is above the bus and has an included angle alpha with an x axis as a rotating axis, and rotating the bus for one circle to form a rolling die profile; taking a curve formed by connecting the lower surface contour line of the side rib, the surface contour line of the lower rib and the outer cylindrical surface contour line of the upper rib as a bus, taking the axis of the thin-wall high-rib forked ring as a rotating shaft, and rotating the bus for one circle to form a restricted mold surface;
and S4, judging the interference relationship between the molding surface of the rolling die and the molding surface of the thin-wall high-rib forked ring.
2. The method for designing a mold for improving the multi-degree-of-freedom load-bearing formability of a thin-walled high-rib forked ring, according to claim 1, wherein the step S4 includes the steps of:
s41, establishing space equation F of the inner cylindrical surface of the upper rib of the thin-wall high-rib forked ring 1 (x, y, z) as shown in formula (1):
in the formula, R is the radius of the inner cylindrical surface of the upper rib of the thin-wall high-rib forked ring, and h is the axial height of the inner cylindrical surface of the upper rib;
s42, establishing a space equation F of the maximum excircle contour line of the rolling die 2 (x, y, z), as shown in equation (2):
wherein r is the maximum external circle outline radius of the rolling die, (A, B, C) are axial vectors of the rolling die, (x) 0 ,y 0 ,z 0 ) Is the maximum excircle outline central point O of the rolling die 1 Determining the coordinate according to the geometric relationship between the rolling die and the thin-wall high-rib forked ring in the step S3 0 ＝R-r·sinα，y 0 ＝0，z 0 ＝h+r·cosα；
S43, projecting the rib inner cylindrical surface on the thin-wall high-rib forked ring in the step S41 into the xOy plane in the coordinate system O-xyz established in the step S1 to obtain a projection curve l 1 The equation is shown in formula (3):
y 1 2 ＝R 2 -x 2 (3)
s44, in the coordinate system O-xyz established in the step S1, projecting the maximum external circle contour line of the rolling die in the step S42 into the xOy plane to obtain a projection curve l 2 The equation is shown in formula (4):
s45, establishing the interference judgment criterion of the rolling die profile and the thin-wall high rib forked ring profile as follows: if l 1 、l 2 No other intersection points except the tangent point exist, so that the rolling die and the thin-wall high-rib forked ring cannot interfere; if l 1 、l 2 If there are other intersection points except the tangent point, the rolling die will interfere with the thin-wall high-rib Y-shaped ring, so as to establish the judgment criterion that the rolling die and the thin-wall high-rib Y-shaped ring do not interfere with each other, as shown in the formula (5):
where x ∈ (x) 0 -r·sinα,x 0 +r·sinα)。
3. The method for designing a mold for improving the multi-degree-of-freedom load formability of a thin-walled high-rib forked ring, according to the claim of step S45, the method further comprises the step S5 of establishing a correlation model among R, α and R according to the criterion that no interference occurs between the rolling mold and the thin-walled high-rib forked ring, which is established in the step S45, as shown in the formula (6); determining the effective selection range of the sizes r and alpha of the high-precision rolling roller according to a formula (6) to obtain a high-precision rolling die which does not interfere with the thin-wall high-rib forked ring;
r≤R·sinα (6)。
4. the method for designing a mold for improving the multi-degree-of-freedom load formability of a thin-walled high-rib forked ring according to claim 1, wherein α in the step S3 is in the range
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210591487.XA CN114985596B (en) | 2022-05-27 | 2022-05-27 | Mold design method for improving multi-degree-of-freedom loading formability of thin-wall high-strength fork-shaped ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210591487.XA CN114985596B (en) | 2022-05-27 | 2022-05-27 | Mold design method for improving multi-degree-of-freedom loading formability of thin-wall high-strength fork-shaped ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114985596A true CN114985596A (en) | 2022-09-02 |
| CN114985596B CN114985596B (en) | 2023-06-13 |
Family
ID=83029474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210591487.XA Active CN114985596B (en) | 2022-05-27 | 2022-05-27 | Mold design method for improving multi-degree-of-freedom loading formability of thin-wall high-strength fork-shaped ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114985596B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001087836A (en) * | 1999-09-17 | 2001-04-03 | Kobe Steel Ltd | Special shaped ring |
| EP1270105A1 (en) * | 2001-06-26 | 2003-01-02 | ATFI Llobregat, S.L. | Roller for spinning lathes |
| US20180021842A1 (en) * | 2015-03-06 | 2018-01-25 | Cambridge Enterprise Limited | Ring rolling process and apparatus for ring rolling |
| CN110479842A (en) * | 2019-08-02 | 2019-11-22 | 武汉理工大学 | Large thin-wall Y shape ring rolling-spinning combined shaping method |
| CN110479840A (en) * | 2019-08-02 | 2019-11-22 | 武汉理工大学 | The high muscle Cylinder shape constructional element envelope roll milling forming method of thin-walled |
| CN110479927A (en) * | 2019-08-02 | 2019-11-22 | 武汉理工大学 | Large thin-wall fork-shaped ring constrains radial-axial rolling manufacturing process |
| CN111604421A (en) * | 2020-05-07 | 2020-09-01 | 上海交通大学 | Flow spinning forming die for cylindrical part with crossed ribs |
| CN112296232A (en) * | 2020-10-06 | 2021-02-02 | 武汉理工大学 | Composite forming method for improving high-rib forming limit of thin-wall high-rib component |
-
2022
- 2022-05-27 CN CN202210591487.XA patent/CN114985596B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001087836A (en) * | 1999-09-17 | 2001-04-03 | Kobe Steel Ltd | Special shaped ring |
| EP1270105A1 (en) * | 2001-06-26 | 2003-01-02 | ATFI Llobregat, S.L. | Roller for spinning lathes |
| US20180021842A1 (en) * | 2015-03-06 | 2018-01-25 | Cambridge Enterprise Limited | Ring rolling process and apparatus for ring rolling |
| CN110479842A (en) * | 2019-08-02 | 2019-11-22 | 武汉理工大学 | Large thin-wall Y shape ring rolling-spinning combined shaping method |
| CN110479840A (en) * | 2019-08-02 | 2019-11-22 | 武汉理工大学 | The high muscle Cylinder shape constructional element envelope roll milling forming method of thin-walled |
| CN110479927A (en) * | 2019-08-02 | 2019-11-22 | 武汉理工大学 | Large thin-wall fork-shaped ring constrains radial-axial rolling manufacturing process |
| CN111604421A (en) * | 2020-05-07 | 2020-09-01 | 上海交通大学 | Flow spinning forming die for cylindrical part with crossed ribs |
| CN112296232A (en) * | 2020-10-06 | 2021-02-02 | 武汉理工大学 | Composite forming method for improving high-rib forming limit of thin-wall high-rib component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114985596B (en) | 2023-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110479840B (en) | Enveloping rolling forming method for thin-wall high-rib cylindrical component | |
| CN109214083B (en) | Precise design method for space envelope forming envelope mold under circular track | |
| CN110293167B (en) | SUV automobile back door outer plate drawing technical surface modeling method | |
| CN104259369B (en) | Large-scale nuclear reactor water chamber head forging monolithic molding forging press and method | |
| CN110918844B (en) | Thin-wall multi-ring high-rib component space envelope forming method | |
| CN110918843B (en) | Space envelope forming manufacturing method for thin-wall high-rib radiating component | |
| CN111090910A (en) | Enveloping die compensation method for improving space enveloping forming precision of conical thin-wall high-rib component | |
| CN103331575B (en) | A kind of moulding process of two-way tubular boss wheel hub | |
| CN109304388A (en) | Bending press and method in a kind of curved part mould of hydroforming four | |
| CN105149455A (en) | Drawing and forming method for deep cylindrical piece and mould thereof | |
| CN110479842A (en) | Large thin-wall Y shape ring rolling-spinning combined shaping method | |
| CN110640019A (en) | Method for integrally forming large-diameter storage box bottom with hole flanging structure | |
| CN114985596A (en) | Mold design method for improving multi-degree-of-freedom loading formability of thin-wall high-rib forked ring | |
| CN114054585A (en) | Hot press forming method of thin-wall variable-curvature titanium alloy shell | |
| CN111375666A (en) | Radial and axial enveloping rolling forming method for complex ribbed curved surface component | |
| CN113210480B (en) | Method for eliminating residual stress of basin-shaped special-shaped forge piece | |
| EP0955111A1 (en) | Integral structure of sheet material and cylindrical member and production method thereof | |
| CN111209630B (en) | Space envelope forming interference judging method for thin-wall high-strength wallboard member | |
| Wu et al. | Multi-step toolpath approach of improving the dimensional accuracy of a non-axisymmetric part in incremental sheet forming and its mechanism analysis | |
| CN113042665B (en) | Axial-circumferential constraint rolling composite forming method for integral fuel storage tank body | |
| CN113083974B (en) | Thin-wall grid rib cylinder rolling-flexible growth composite forming method | |
| CN113065210B (en) | Method for controlling space envelope forming buckling deformation of thin-wall component | |
| CN113020506B (en) | Multi-directional constraint rolling forming manufacturing method for integral structure of fuel storage tank | |
| CN212384598U (en) | Piston and sample piece processing device thereof | |
| CN204171250U (en) | End socket forging monolithic molding counterdie and forging press thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |