CN113617915B - Local loading integral forming method for special-shaped section rib cylindrical part - Google Patents
Local loading integral forming method for special-shaped section rib cylindrical part Download PDFInfo
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- CN113617915B CN113617915B CN202110862139.7A CN202110862139A CN113617915B CN 113617915 B CN113617915 B CN 113617915B CN 202110862139 A CN202110862139 A CN 202110862139A CN 113617915 B CN113617915 B CN 113617915B
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- 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
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Abstract
The invention belongs to the technical field of plastic processing, and particularly discloses a local loading integral forming method of a special-shaped gluten cutting cylindrical piece. The invention reduces the extrusion load, improves the process flexibility, integrally forms the large-diameter thin-wall special-shaped section gluten cylindrical piece, and has simple working procedures and convenient operation. The invention is suitable for integral forming of the special-shaped section reinforcement cylindrical piece.
Description
Technical Field
The invention belongs to the technical field of plastic processing, and particularly relates to a local loading integral forming method of a special-shaped section reinforcement cylindrical piece.
Background
Aerospace equipment such as heavy carrier rockets, space vehicles and the like is an important mark of national science and technology level as a high-level national international competition, so that the high-end equipment is required to have the characteristics of large carrying capacity, long range, low energy consumption and long service life, and further, key components of the equipment also have the characteristics of high performance, high reliability, light weight and high efficiency, so that the equipment is inevitably selected from light high-strength materials and is processed into a complex, thin-wall, integrated and light-weight cross-scale complex structure. The high-strength aluminum alloy cylindrical piece with the special-shaped section bar gluten is a typical representative of the type, and the special-shaped section bar gluten is designed outside the high-strength aluminum alloy cylindrical piece, so that the strength and the rigidity of the member can be greatly improved, and the weight of the member can be reduced. However, the large diameter and the thin wall of the large-diameter thin-wall irregular section rib cylindrical part cylinder body and the structure of the local extremely complex molded surface are compounded, so that the traditional plastic forming process is difficult to cooperate with the deformation of the large diameter and the thin wall to form the whole body. The integral forming difficulty of the large-diameter thin-wall special-shaped section rib cylindrical part has three difficulties: firstly, how to realize the forming of a large-diameter thin-wall cylinder body with extreme size, namely the problem of cylinder forming; secondly, how to form a local extremely complex structure of the abnormal-shaped gluten cutting, namely the difficult problem of 'forming gluten'; and thirdly, how to coordinate the deformation of two different extremely complex structures of the rib and the cylinder, namely the problem of 'the deformation coordination of the rib and cylinder structure'.
The existing mechanical milling pure machining can realize integral manufacturing through material reduction, but has the defects of large removal amount, long period and low material utilization rate in mechanical processing, and the milling can cut off a metal streamline and generate complex residual stress, so that the shape distortion and the microcrack are caused, and the service performance of a component is further influenced. The assembly manufacturing method of riveting/welding the skin, the stringer, the bulkhead, the section bar and other parts in a blocking forming mode is not integrally formed, the service hidden trouble caused by ineffective weight increment of rivets/welding seams and local stress concentration is caused, and the problems of multiple working procedures, long flow path and the like exist. Therefore, the existing manufacturing methods of pure milling, block forming and riveting/welding assembly cannot meet the requirement of high-performance and high-efficiency integral forming of the large-diameter thin-wall special-shaped rib cylinder cross-scale component. If the traditional integral loading forming inner and outer rib structure is adopted, the problems of large forming load and the like exist, the process flexibility for regulating and controlling the deformation of the ribs and the cylinder is lacked, the forming difficulty of the extremely complex structures is very high or even impossible due to the limitation of the mold structure and the demolding. For example, forging, rolling, rotary forging and other processes are suitable for processing rib plate members, but are difficult to be applied to forming of rib cylinders/ring members; the plastic forming process mainly relates to a simpler regular gluten-cutting structure such as rectangle and trapezoid, and is difficult to expand and apply to the forming of a complex structure of the rib with the special-shaped section.
Disclosure of Invention
The invention aims to provide a local loading integral forming method of a special-shaped gluten cutting cylindrical piece so as to realize integral forming of a large-diameter thin-wall special-shaped gluten cutting cylindrical piece.
In order to achieve the purpose, the technical method comprises the following steps:
a local loading integral forming method for a special-shaped section rib cylindrical part comprises the following steps:
s1, fixing a cylindrical blank on a spinning core mold by a tail jacking mechanism, arranging flow spinning wheels on two sides of the cylindrical blank, and rotating the spinning core mold to drive the cylindrical blank to rotate;
s2, in the rotating process of the cylindrical blank, moving the flow spinning wheel to a spinning starting position of a region to be deformed, carrying out radial feeding and pressing on the cylindrical blank to a first preset thinning amount by the flow spinning wheel, carrying out axial feeding according to a preset axial feeding amount to form a thick-wall region and a thin-wall region, and spinning out the flow spinning wheel and moving the flow spinning wheel to a non-deformed region;
s3, repeating the step S2 until all areas of the cylindrical blank are deformed to obtain the cylindrical blank with different thicknesses;
s4, replacing the flowing rotary extrusion wheel with a special-shaped gluten cutting rotary extrusion wheel, and axially extruding and forming the thick-wall area of the cylindrical blank with different thicknesses by the special-shaped gluten cutting rotary extrusion wheel to obtain special-shaped gluten cutting;
s5, replacing the back-flow rotary extrusion rotary wheel with the special-shaped gluten cutting rotary extrusion rotary wheel, and carrying out radial feeding and pressing on the thin-wall area of the cylindrical blank with different thicknesses by the rotary extrusion rotary wheel until the thin-wall area is reduced to a second preset thickness, then carrying out axial feeding, and carrying out thinning on the thin-wall area of the cylindrical blank with different thicknesses to obtain the special-shaped gluten cutting cylindrical piece.
As a limitation: in step S1, the number of the flow spinning rollers is four, two flow spinning rollers are provided on one side of the cylindrical blank, and the other two flow spinning rollers are provided on the other side of the cylindrical blank.
As a further limitation: the spinning positions of the two flow spinning wheels arranged on the same side of the cylindrical blank in the step S2 are respectively positioned at the starting end and the tail end of the area to be deformed on the side of the cylindrical blank; the axial feeding directions of the two flow spinning rollers arranged on the same side of the cylindrical blank are opposite.
As another limitation: in the step S1, the number of the flowing spinning rollers is two, and the two flowing spinning rollers are respectively arranged on two sides of the cylindrical blank.
As a limitation: in the step S2, the spinning positions of the two flow spinning wheels are respectively positioned at the starting ends of the areas to be deformed on the two sides of the cylindrical blank, the flow spinning wheels perform radial feeding and pressing on the cylindrical blank to a first preset thinning amount, then perform axial feeding towards the middle of the area to be deformed according to the preset axial feeding amount, then spin out the flow spinning wheels and move to the tail end of the area to be deformed, the flow spinning wheels perform radial feeding and pressing on the cylindrical blank to the first preset thinning amount, and then perform axial feeding towards the middle of the area to be deformed according to the preset axial feeding amount to form a thick-wall area and a thin-wall area.
As a further limitation: the abnormal-shaped gluten cutting and rotary extrusion spinning wheel in the step S4 comprises a pair of spinning wheels and an abnormal-shaped spinning wheel, wherein the pair of spinning wheels comprise a first pair of spinning wheels and a second pair of spinning wheels, and the abnormal-shaped spinning wheel comprises a first abnormal-shaped spinning wheel and a second abnormal-shaped spinning wheel; the first contra-wheel rotating wheel and the first special-shaped rotating wheel are arranged on one side of the cylindrical blank with different thicknesses and are positioned at two ends of the thick-wall area, and the second contra-wheel rotating wheel and the second special-shaped rotating wheel are arranged on the other side of the cylindrical blank with different thicknesses and are positioned at two ends of the thick-wall area; the process that the abnormal-shaped gluten cutting rotary extrusion rotary wheel performs axial extrusion on the thick-wall area of the cylindrical blank with different thicknesses specifically comprises the steps that the first pair of rotary wheels and the first abnormal-shaped rotary wheel perform axial feeding in opposite directions, extrusion forming is performed, and the second pair of rotary wheels and the second abnormal-shaped rotary wheel perform axial feeding in opposite directions, and extrusion forming is performed.
As a further limitation: and S5, replacing the back-flow spinning rollers with the special-shaped gluten cutting spinning rollers, wherein the number of the four spinning rollers is four, two spinning rollers are arranged on one side of the cylindrical blank with different thicknesses, the other two spinning rollers are arranged on the other side of the cylindrical blank with different thicknesses, the spinning-up positions of the two spinning rollers arranged on the same side of the cylindrical blank with different thicknesses are respectively positioned at two ends of the thick-wall area on the side of the cylindrical blank with different thicknesses, and the axial feeding directions of the spinning rollers face the thin-wall area.
As a further limitation: and S5, replacing the back-flow spinning rollers by the special-shaped gluten cutting spinning rollers, wherein the number of the two spinning rollers is two, the two spinning rollers are respectively arranged at two sides of the cylindrical blank with different thicknesses, the spinning positions of the two spinning rollers are respectively positioned at one end of the thick-wall area at two sides of the cylindrical blank with different thicknesses, and the axial feeding directions of the two spinning rollers face the thin-wall area.
As a limitation: the special-shaped gluten cutting device is a T-shaped gluten, and the flow spinning wheel adopts an arc spinning wheel; the pair of spinning wheels adopts a cylindrical spinning wheel; the special-shaped rotating wheel takes a contact end with the cylindrical blank as a lower part, the structure of the special-shaped rotating wheel is a first cylinder, a second cylinder and a third cylinder from top to bottom in sequence, the first cylinder is connected with the second cylinder, the second cylinder is connected with the third cylinder, and the diameters of the circular sections of the three cylinders are the second cylinder, the third cylinder and the first cylinder from small to large in sequence; the height of the pair of spinning wheels is equal to that of the third cylinder of the special-shaped spinning wheel.
As a last definition: the special-shaped truncated gluten is a reversed L-shaped gluten, and the flow spinning roller adopts an arc spinning roller; the cylindrical spinning wheel is adopted as the spinning wheel; the special-shaped rotating wheel takes a contact end with the cylindrical blank as a lower part, the structure of the special-shaped rotating wheel is a first cylinder, a second cylinder and a third cylinder from top to bottom in sequence, the first cylinder is connected with the second cylinder, the second cylinder is connected with the third cylinder, and the diameters of the circular sections of the three cylinders are the second cylinder, the third cylinder and the first cylinder from small to large in sequence; the height of the pair of spinning wheels is greater than or equal to that of the special-shaped spinning wheel.
Due to the adoption of the scheme, compared with the prior art, the invention has the beneficial effects that:
(1) According to the local loading integral forming method of the special-shaped section gluten cylindrical part, provided by the invention, the cylindrical blank is locally thinned and locally thickened through flow spinning, the special-shaped section gluten is rotationally extruded through the special-shaped section gluten rotary extrusion spinning wheel, and the local loading forming process is combined with the local loading forming process, so that the extrusion load is reduced, the process flexibility is improved, and the large-diameter thin-wall special-shaped section gluten cylindrical part is integrally formed through multi-pass matching loading and coordinated deformation, and the process is simple and convenient to operate;
(2) The local loading integral forming method of the special-shaped gluten cutting cylindrical piece provided by the invention is simple in structure, convenient to operate and capable of forming ribs by spinning and extruding.
The invention is suitable for integral forming of the special-shaped section rib cylindrical piece.
Drawings
The invention is described in further detail below with reference to the figures and the embodiments.
FIG. 1 is a schematic view of step S1 in example 1 of the present invention;
FIG. 2 is a schematic view of step S2 in example 1 of the present invention;
FIG. 3 is a front view of a flow spinning wheel according to an embodiment of the present invention;
FIG. 4 is a top view of a flow spinning wheel according to an embodiment of the present invention;
FIG. 5 is a perspective view of a flow spinning wheel according to an embodiment of the present invention;
FIG. 6 is a front view of a spinning wheel in accordance with an embodiment of the present invention;
FIG. 7 is a top view of a spinning wheel in accordance with an embodiment of the present invention;
FIG. 8 is a perspective view of a spinning wheel in accordance with an embodiment of the present invention;
FIG. 9 is a front view of the profile wheel according to the embodiment of the present invention;
FIG. 10 is a top view of the profile wheel according to the embodiment of the present invention;
FIG. 11 is a perspective view of a profile wheel according to an embodiment of the present invention;
FIG. 12 is a schematic view showing the process of integrally forming the rib-shaped cross-section gluten cylindrical part according to example 1 of the present invention;
FIG. 13 is a schematic view of step S1 in example 2 of the present invention;
FIG. 14 is a schematic view of step S2 in embodiment 2 of the present invention;
FIG. 15 is a schematic view showing the process of integrally forming the rib-shaped cross-section gluten cylindrical part according to example 3 of the present invention;
in the figure: 1. a tail jacking mechanism; 2. a cylindrical blank; 3. a core mold; 4. a flow spinning wheel; 5. A thick-wall region; 6. a thin-walled region; 7. a cylindrical blank of unequal thickness; 8. a first pair of spinning wheels; 9. a second pair of wheel spinning wheels; 10. a first profile wheel; 11. a second special-shaped rotating wheel; 12. t-shaped ribs; 13. the gamma-shaped rib.
Detailed Description
The present invention is further described in the following examples, but it should be understood by those skilled in the art that the present invention is not limited to the following examples, and any modifications and equivalent changes based on the specific examples of the present invention are within the scope of the claims of the present invention.
A local loading integral forming method of a special-shaped section rib cylindrical part comprises the following steps, wherein the steps S1 and S2 are respectively shown in figures 1 and 2:
s1, a tail jacking mechanism 1 fixes a cylindrical blank 2 on a spinning core mold 3, two sides of the cylindrical blank 2 are provided with flow spinning wheels 4, the structure of the flow spinning wheels 4 is shown in figures 3-5, the number of the flow spinning wheels 4 is four, two flow spinning wheels 4 are arranged on one side of the cylindrical blank 2, the other two flow spinning wheels 4 are arranged on the other side of the cylindrical blank 2, and the spinning core mold 3 rotates and drives the cylindrical blank 2 to rotate;
s2, in the rotating process of the cylindrical blank 2, moving the flow spinning wheels 4 to the spinning positions of the areas to be deformed, wherein the spinning positions of the two flow spinning wheels 4 arranged on the same side of the cylindrical blank 2 are respectively positioned at the starting end and the tail end of the area to be deformed on the side of the cylindrical blank 2, the flow spinning wheels 4 perform radial feeding and pressing on the cylindrical blank 2 to a first preset thinning amount, and then perform axial feeding according to a preset axial feeding amount to form a thick-wall area 5 and a thin-wall area 6, the axial feeding directions of the two flow spinning wheels 4 arranged on the same side of the cylindrical blank 2 are opposite, and the flow spinning wheels 4 are spun out and moved to the areas which are not deformed;
s3, repeating the step S2 until all areas of the cylindrical blank 2 are deformed to obtain a cylindrical blank 7 with different thicknesses;
s4, replacing the flowing spinning wheel 4 with a special-shaped gluten cutting spinning wheel, wherein the special-shaped gluten cutting spinning wheel comprises a pair spinning wheel and a special-shaped spinning wheel, the pair spinning wheel comprises a first pair spinning wheel 8 and a second pair spinning wheel 9, and the special-shaped spinning wheel comprises a first special-shaped spinning wheel 10 and a second special-shaped spinning wheel 11; the first pair of wheel spinning wheels 8 and the first special-shaped spinning wheels 10 are arranged on one side of the cylindrical blank 7 with different thicknesses and are positioned at two ends of the thick-wall area 5, the second pair of wheel spinning wheels 9 and the second special-shaped spinning wheels 11 are arranged on the other side of the cylindrical blank 7 with different thicknesses and are positioned at two ends of the thick-wall area 5, the first pair of wheel spinning wheels 8 and the first special-shaped spinning wheels 10 axially feed the thick-wall area 5 on one side of the cylindrical blank 7 with different thicknesses in opposite directions and are extruded to form, and the second pair of wheel spinning wheels 9 and the second special-shaped spinning wheels 11 axially feed the thick-wall area 5 on the other side of the cylindrical blank 7 with different thicknesses in opposite directions and are extruded to form the special-shaped cross-section gluten;
s5, replacing the special-shaped gluten cutting rotary extrusion rotary wheel with the flowing rotary extrusion rotary wheel 4, wherein the number of the flowing rotary extrusion rotary wheels 4 is four, two flowing rotary extrusion rotary wheels 4 are arranged on one side of the cylindrical blank 7 with different thicknesses, the other two flowing rotary extrusion rotary wheels 4 are arranged on the other side of the cylindrical blank 7 with different thicknesses, the spinning positions of the two flowing rotary extrusion rotary wheels 4 arranged on the same side of the cylindrical blank 7 with different thicknesses are respectively positioned at two ends of the thick-wall area 5 on the side of the cylindrical blank 7 with different thicknesses, the flowing rotary wheels 4 firstly feed the thin-wall area 6 of the cylindrical blank 7 with different thicknesses in the radial direction and press the thin-wall area 6 to a second preset thinning amount, then axially feed the thin-wall area 6 with the axial feeding direction facing the thin-wall area 6, and thin-wall area 6 of the cylindrical blank 7 with different thicknesses is thinned, so as to obtain the special-shaped gluten cutting cylindrical piece.
The abnormal-shaped gluten cutting device in the embodiment is a T-shaped gluten 12, and the flow spinning wheel 4 adopts an arc spinning wheel; the pair of spinning wheels adopts a cylindrical spinning wheel, and the structure is shown in figures 6-8; the structure of the special-shaped rotating wheel is shown in fig. 9-11, the special-shaped rotating wheel takes a contact end with the cylindrical blank 2 as the lower part, the structure of the special-shaped rotating wheel sequentially comprises a first cylinder, a second cylinder and a third cylinder from top to bottom, the first cylinder is connected with the second cylinder, the second cylinder is connected with the third cylinder, and the diameters of the circular cross sections of the three cylinders sequentially comprise the second cylinder, the third cylinder and the first cylinder from small to large; the height of the pair of spinning wheels is equal to that of the third cylinder of the special-shaped spinning wheel.
The process schematic diagram of the integral forming of the rib cylinder with the special-shaped section of the embodiment is shown in fig. 12.
A local loading integral forming method of a special-shaped section rib cylindrical part comprises the following steps, wherein the steps S1 and S2 are respectively shown in figures 13 and 14:
s1, fixing a cylindrical blank 2 on a spinning core mold 3 by a tail ejection mechanism 1, arranging two flow spinning wheels 4 on two sides of the cylindrical blank 2, wherein the flow spinning wheels 4 are structurally shown in figures 3-5, the number of the flow spinning wheels 4 is two, the two flow spinning wheels are respectively arranged on two sides of the cylindrical blank 2, and the spinning core mold 3 rotates and drives the cylindrical blank 2 to rotate;
s2, in the rotating process of the cylindrical blank 2, moving the flow spinning wheels 4 to spinning positions of areas to be deformed, wherein the spinning positions of the two flow spinning wheels 4 are respectively positioned at the starting ends of the areas to be deformed on two sides of the cylindrical blank 2, the flow spinning wheels 4 firstly feed and press the cylindrical blank 2 to a first preset thinning amount in a radial direction, then axially feed towards the middle of the areas to be deformed according to the preset axial feeding amount, then screw out and move the flow spinning wheels 4 to the tail ends of the areas to be deformed, the flow spinning wheels 4 firstly feed and press the cylindrical blank 2 to the first preset thinning amount in the radial direction, then axially feed towards the middle of the areas to be deformed according to the preset axial feeding amount to form a thick-wall area 5 and a thin-wall area 6, and screw out and move the flow spinning wheels 4 to an undeformed area;
s3, repeating the step S2 until all areas of the cylindrical blank 2 are deformed to obtain a cylindrical blank 7 with different thicknesses;
s4, replacing the flowing spinning wheel 4 with a special-shaped gluten cutting spinning wheel, wherein the special-shaped gluten cutting spinning wheel comprises a pair spinning wheel and a special-shaped spinning wheel, the pair spinning wheel comprises a first pair spinning wheel 8 and a second pair spinning wheel 9, and the special-shaped spinning wheel comprises a first special-shaped spinning wheel 10 and a second special-shaped spinning wheel 11; a first pair of wheel spinning wheels 8 and a first special-shaped spinning wheel 10 are arranged on one side of the cylindrical blank 7 with unequal thickness and are positioned at two ends of the thick-wall area 5, a second pair of wheel spinning wheels 9 and a second special-shaped spinning wheel 11 are arranged on the other side of the cylindrical blank 7 with unequal thickness and are positioned at two ends of the thick-wall area 5, the first pair of wheel spinning wheels 8 and the first special-shaped spinning wheel 10 axially feed the thick-wall area 5 on one side of the cylindrical blank 7 with unequal thickness in opposite directions for extrusion molding, and the second pair of wheel spinning wheels 9 and the second special-shaped spinning wheel 11 axially feed the thick-wall area 5 on the other side of the cylindrical blank 7 with unequal thickness in opposite directions for extrusion molding to obtain the special-shaped cut gluten;
s5, replacing the special-shaped gluten cutting rotary extrusion rotary wheels with the flowing rotary extrusion rotary wheels 4, wherein the number of the flowing rotary extrusion rotary wheels 4 is two, the two flowing rotary extrusion rotary wheels are respectively arranged at two sides of the cylindrical blank 7 with different thicknesses, the spinning positions of the two flowing rotary extrusion rotary wheels 4 are respectively positioned at one end of the thick-wall area 5 at two sides of the cylindrical blank 7 with different thicknesses, the flowing rotary extrusion rotary wheels 4 firstly feed the thin-wall area 6 of the cylindrical blank 7 with different thicknesses in the radial direction and press the thin-wall area to a second preset thinning amount, then, the thin-wall area 6 of the cylindrical blank 7 with different thicknesses is axially fed, the axial feeding direction faces the thin-wall area 6, and the thin-wall area 6 of the cylindrical blank 7 with different thicknesses is thinned to obtain the special-shaped gluten cutting cylindrical piece.
The abnormal-shaped gluten cutting device in the embodiment is a T-shaped gluten 12, and the flow spinning wheel 4 adopts an arc spinning wheel; the pair of spinning wheels adopts a cylindrical spinning wheel, and the structure is shown in figures 6-8; the structure of the special-shaped rotating wheel is shown in fig. 9-11, the special-shaped rotating wheel takes a contact end with the cylindrical blank 2 as the lower part, the structure of the special-shaped rotating wheel sequentially comprises a first cylinder, a second cylinder and a third cylinder from top to bottom, the first cylinder is connected with the second cylinder, the second cylinder is connected with the third cylinder, and the diameters of the circular cross sections of the three cylinders sequentially comprise the second cylinder, the third cylinder and the first cylinder from small to large; the height of the pair of spinning wheels is equal to that of the third cylinder of the special-shaped spinning wheel.
The main technical solution of this embodiment is substantially the same as that of embodiment 1, and the features that are not explained in this embodiment adopt the explanations in embodiment 1, and are not described again here. The present embodiment differs from embodiment 1 in that: the special-shaped truncated gluten is a gamma-shaped gluten 13, and the height of the pair of spinning wheels is greater than or equal to that of the special-shaped spinning wheels. The process of integrally forming the rib cylinder with the special-shaped section of the embodiment is schematically shown in fig. 15.
The main technical solution of this embodiment is substantially the same as that of embodiment 2, and the features that are not explained in this embodiment adopt the explanations in embodiment 2, which are not described again here. The difference between this embodiment and embodiment 2 is: the special-shaped truncated gluten is a gamma-shaped gluten 13, and the height of the pair of spinning wheels is greater than or equal to that of the special-shaped spinning wheels.
Claims (3)
1. A local loading integral forming method of a special-shaped section rib cylindrical part is characterized by comprising the following steps:
s1, fixing a cylindrical blank on a spinning core mold by a tail jacking mechanism, arranging flow spinning wheels on two sides of the cylindrical blank, and rotating the spinning core mold to drive the cylindrical blank to rotate; the number of the flow spinning wheels is four or two; when the number of the flow spinning wheels is four, two flow spinning wheels are arranged on one side of the cylindrical blank, and the other two flow spinning wheels are arranged on the other side of the cylindrical blank;
when the number of the flow spinning wheels is two, the two flow spinning wheels are respectively arranged on two sides of the cylindrical blank;
s2, in the rotating process of the cylindrical blank, moving the flow spinning wheel to a spinning starting position of a region to be deformed, carrying out radial feeding and pressing on the cylindrical blank by the flow spinning wheel until a first preset thinning amount is achieved, and then carrying out axial feeding according to a preset axial feeding amount to form a thick-wall region and a thin-wall region; then the flow spinning wheel is spun out and moved to an undeformed region; the method specifically comprises the following steps:
when the number of the flow spinning rollers is four, the spinning positions of two flow spinning rollers arranged on the same side of the cylindrical blank are respectively positioned at the starting end and the tail end of a to-be-deformed area on the side of the cylindrical blank, the flow spinning rollers firstly feed the cylindrical blank in the radial direction and press the cylindrical blank to a first preset thinning amount, and then carry out axial feeding according to a preset axial feeding amount to form a thick-wall area and a thin-wall area; the axial feeding directions of the two flow spinning wheels arranged on the same side of the cylindrical blank are opposite; then the flow spinning wheel is spun out and moved to an undeformed area;
when the number of the flowing spinning wheels is two, the spinning positions of the two flowing spinning wheels are respectively positioned at the starting ends of the areas to be deformed on the two sides of the cylindrical blank; the flow spinning wheel firstly feeds the cylindrical blank in a radial direction and presses the cylindrical blank down to a first preset thinning amount, and then feeds the cylindrical blank in an axial direction towards the middle of the area to be deformed according to the preset axial feeding amount to form a thick-wall area and a thin-wall area; then the flow spinning wheel is spun out and moved to the tail end of the area to be deformed;
s3, repeating the step S2 until all areas of the cylindrical blank are deformed to obtain the cylindrical blank with different thicknesses;
s4, replacing the flowing rotary extrusion wheel with a special-shaped gluten cutting rotary extrusion wheel, and axially extruding and forming a thick-wall area of the cylindrical blank with different thicknesses by the special-shaped gluten cutting rotary extrusion wheel to obtain special-shaped gluten cutting; the special-shaped gluten cutting and extruding spinning wheel comprises a first spinning wheel pair and a second spinning wheel pair, and the special-shaped spinning wheel comprises a first special-shaped spinning wheel and a second special-shaped spinning wheel; the first contra-wheel rotating wheel and the first special-shaped rotating wheel are arranged on one side of the cylindrical blank with different thicknesses and are positioned at two ends of the thick-wall area, and the second contra-wheel rotating wheel and the second special-shaped rotating wheel are arranged on the other side of the cylindrical blank with different thicknesses and are positioned at two ends of the thick-wall area; the process that the special-shaped gluten cutting rotary extrusion rotary wheel performs axial extrusion on the thick-wall area of the cylindrical blank with different thicknesses specifically comprises the steps that a first pair of rotary wheels and a first special-shaped rotary wheel perform axial feeding in opposite directions to perform extrusion forming, and a second pair of rotary wheels and a second special-shaped rotary wheel perform axial feeding in opposite directions to perform extrusion forming;
s5, replacing a rotary extrusion rotary wheel of the special-shaped section gluten with a backflow rotary extrusion rotary wheel, carrying out radial feeding and pressing to a second preset thinning amount on the thin-wall area of the cylindrical blank with different thicknesses by the rotary extrusion rotary wheel, then carrying out axial feeding, and thinning the thin-wall area of the cylindrical blank with different thicknesses to obtain a special-shaped section gluten cylindrical piece;
in the corresponding steps, the special-shaped cross-section gluten is a T-shaped gluten or an inverted L-shaped gluten; the flow spinning wheel adopts an arc spinning wheel; the pair of spinning wheels adopts a cylindrical spinning wheel; the special-shaped rotating wheel takes a contact end with a cylindrical blank with different thicknesses as a lower part, the structure of the special-shaped rotating wheel is a first cylinder, a second cylinder and a third cylinder from top to bottom in sequence, the first cylinder is connected with the second cylinder, the second cylinder is connected with the third cylinder, and the circular cross-section diameters of the three cylinders are the second cylinder, the third cylinder and the first cylinder from small to large in sequence; when the special-shaped gluten cutting device is a T-shaped gluten, the height of the pair of spinning wheels is equal to the height of a third cylinder of the special-shaped spinning wheel; when the special-shaped truncated gluten is the T-shaped gluten, the height of the pair of spinning wheels is greater than or equal to that of the special-shaped spinning wheels.
2. The local loading integral forming method of the special-shaped section rib cylindrical piece according to claim 1, wherein in the step S5, the special-shaped section rib rotary extrusion rotary wheel is replaced by four flow rotary extrusion rotary wheels, two flow rotary extrusion rotary wheels are arranged on one side of the cylinder blank with different thicknesses, the other two flow rotary extrusion rotary wheels are arranged on the other side of the cylinder blank with different thicknesses, the rotation starting positions of the two flow rotary extrusion rotary wheels arranged on the same side of the cylinder blank with different thicknesses are respectively positioned at two ends of the thick wall area on the side of the cylinder blank with different thicknesses, and the axial feeding direction faces to the thin wall area.
3. The local loading integral forming method of the special-shaped section rib cylindrical piece according to claim 1, characterized in that in step S5, the back-flow spinning rollers are replaced by the special-shaped section rib spinning and extruding rollers, the number of the two flow spinning rollers is two, the two flow spinning rollers are respectively arranged on two sides of the cylindrical blank with different thicknesses, the spinning-up positions of the two flow spinning rollers are respectively located at one end of the thick-wall area on two sides of the cylindrical blank with different thicknesses, and the axial feeding directions of the two flow spinning rollers face the thin-wall area.
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| CN114147117B (en) * | 2021-12-13 | 2024-04-02 | 西北工业大学 | Method for forming high-strength thin-wall cylindrical part by heat-assisted multi-roller spinning |
| CN114192647B (en) * | 2021-12-13 | 2024-04-02 | 西北工业大学 | Shearing forming method for annular outer rib cylindrical part |
| CN114603027B (en) * | 2022-03-09 | 2023-03-31 | 西北工业大学 | Multistage spinning wheel type follow-up constraint spinning forming method for cylindrical part with inner ribs |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6334349B1 (en) * | 1999-09-28 | 2002-01-01 | Leico Gmbh & Co. Werkzeugmaschinenbau | Method for the manufacturing of a shaft with a larger diameter flange |
| JP4139061B2 (en) * | 2000-10-23 | 2008-08-27 | 株式会社リコー | Roller core metal processing method and electrophotographic fixing roller core metal processing method |
| JP2005040841A (en) * | 2003-07-24 | 2005-02-17 | Yokohama Rubber Co Ltd:The | Method and device for manufacturing cylindrical formed-body |
| CN102974676B (en) * | 2012-12-18 | 2014-08-13 | 西安航天动力机械厂 | Method for pressing conical cover reinforcing ribs |
| CN103264263B (en) * | 2013-05-30 | 2015-04-08 | 中国航空工业集团公司北京航空制造工程研究所 | Process method for spinning tubular part in staggered mode |
| CN104028607B (en) * | 2014-06-06 | 2016-03-23 | 中国航天科技集团公司长征机械厂 | A kind ofly improve the processing method that spinning subtracts thick pipe finished quality |
| CN104028599B (en) * | 2014-06-06 | 2016-05-18 | 中国航天科技集团公司长征机械厂 | A kind of bellows rotary press modelling method |
| CN109201830B (en) * | 2017-07-06 | 2019-07-09 | 中国航空制造技术研究院 | A method of preventing flange defect occur without bottomless drum shape part spinning process |
| CN108127014B (en) * | 2017-12-06 | 2019-05-31 | 西安航天动力机械有限公司 | The wrong method away from reversed spinning of a kind of pair of wheel |
| CN109201834B (en) * | 2018-09-04 | 2020-03-31 | 西安交通大学 | Composite forming method of flow spinning and double-roller clamping spinning |
| CN209631903U (en) * | 2019-01-25 | 2019-11-15 | 上海玺欧机电科技有限公司 | Rotary radial feeding cnc spinning machine |
| CN110479841B (en) * | 2019-08-02 | 2020-08-25 | 武汉理工大学 | Multi-pass multi-directional rotary rolling forming method for large transverse high-rib thin-wall ring piece |
| CN110405040B (en) * | 2019-08-10 | 2021-02-26 | 西安长峰机电研究所 | Reverse spinning method for ultrahigh-strength steel outer-step thin-wall cylinder |
| CN110548797B (en) * | 2019-09-16 | 2020-07-07 | 芜湖西诺普汽车零部件科技有限公司 | Coreless spinning processing method for large-proportion multi-time reducing hollow shaft |
| CN111346963B (en) * | 2020-03-24 | 2022-01-11 | 长安大学 | Machining rotary wheel with longitudinal inner ribs for thin-wall cylinder and machining method based on machining rotary wheel |
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