CN114147117A - Method for forming high-rib thin-wall cylindrical part through spinning by using heat-assisted multi-spinning wheel - Google Patents
Method for forming high-rib thin-wall cylindrical part through spinning by using heat-assisted multi-spinning wheel Download PDFInfo
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- CN114147117A CN114147117A CN202111514518.3A CN202111514518A CN114147117A CN 114147117 A CN114147117 A CN 114147117A CN 202111514518 A CN202111514518 A CN 202111514518A CN 114147117 A CN114147117 A CN 114147117A
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- 238000009987 spinning Methods 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000010008 shearing Methods 0.000 claims abstract description 86
- 230000008569 process Effects 0.000 claims abstract description 19
- 239000007921 spray Substances 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910000861 Mg alloy Inorganic materials 0.000 abstract description 3
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 4
- 238000005242 forging Methods 0.000 description 3
- 238000007514 turning Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention belongs to the technical field of metal plastic processing, and discloses a method for forming a high-rib thin-wall cylindrical part by spinning through a heat-assisted multi-spinning wheel, which is based on a cylindrical part hot spinning forming process and comprises the steps of firstly, carrying out sectional thinning on a cylindrical part blank by adopting a flowing spinning wheel; and then, applying local shearing deformation to the stacking position of the cylindrical part blank by adopting a shearing spinning wheel to realize material separation, and applying radial constraint to the cylindrical part blank by using a flow spinning wheel which synchronously and axially feeds with the shearing spinning wheel until a high-rib thin-wall cylindrical part is formed. The invention effectively combines the heat-assisted flow spinning and the shear forming, solves the problem of difficult integrated forming of a high-rib structure and a cylindrical part base body (especially materials with poor room-temperature plastic deformation capacity such as magnesium alloy, titanium alloy and the like), improves an outer rib structure in the shear forming, greatly improves the utilization rate of the materials, is beneficial to promoting the high-performance accurate forming and manufacturing progress of complex components and meets the requirement of aerospace carrying equipment on advanced forming and manufacturing technology.
Description
Technical Field
The invention belongs to the technical field of metal plastic processing, and particularly relates to a method for forming a high-rib thin-wall cylindrical part by spinning through a heat-assisted multi-spinning wheel.
Background
The high-rib thin-wall cylindrical part has been widely applied to the fields of aviation, aerospace and the like due to the characteristics of integration, light weight, high performance and the like. In recent years, domestic and foreign scholars successfully realize the plastic forming of the rib structure through innovative reform, improve the connection precision of the base body and the rib structure, and ensure the reliability of the formed high-rib thin-wall cylindrical part structure.
At present, the plastic forming method suitable for the high-rib thin-wall cylindrical part mainly comprises the following steps: forging and envelope forming.
Firstly, forging and forming: chinese patent application publication No. CN 113020516 a discloses a method and a die for forging a metal sheet with a flange structure and different thicknesses: the method comprises the steps of firstly, drawing and preforming a plate to form the plate into a cylindrical blank, then shearing and extruding the outer side of the cylindrical blank through the movement of a male die outer side die, enabling the material to be subjected to shearing deformation to form a cylindrical part with a flange, and finally forming a structural part with an outer rib. The process combines the deep drawing process and the shearing and extruding effect of the male die, and realizes the integrated forming of the high-rib thin-wall cylindrical part. But the process requires high equipment and blank thickness.
Secondly, envelope forming: in chinese patent application publication No. CN 110918843 a, a method for manufacturing a thin-wall high-rib heat dissipation member by space envelope molding is disclosed: the space enveloping motion is carried out through the enveloping die, and continuous incremental plastic deformation is generated under the combined action of the restraining die, so that the coordinated deformation of the thin-wall plate and the rib material is realized. However, the envelope forming has high requirements on the die, and the high-rib thin-wall cylindrical part is greatly limited in the aspect of upsetting extrusion forming due to the structural characteristics of the high-rib thin-wall cylindrical part.
In summary, the processes for forming the high-rib thin-wall cylindrical part in the prior art have certain limitations because the dependence of the size of the component on the die cannot be eliminated, and the quality of the component formed by integrally forming the cylindrical part substrate and the high-rib structure cannot be ensured.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a method for forming a high-rib thin-wall cylindrical part by spinning through a heat-assisted multi-spinning wheel, so as to achieve the aim of realizing high-rib structure and high-quality integrated forming of a thin-wall cylindrical part matrix aiming at materials with high strength and poor plastic deformation capacity at room temperature.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a method for forming a high-rib thin-wall cylindrical part by spinning through a heat-assisted multi-spinning wheel is based on a cylindrical part hot spinning forming process and comprises the steps of firstly, carrying out sectional thinning on a cylindrical part blank through a flowing spinning wheel; and secondly, applying local shearing deformation to the stacking position of the cylindrical blank by adopting a shearing spinning wheel, and simultaneously controlling the synchronous axial feeding of the flowing spinning wheel and the shearing spinning wheel to apply radial constraint to the cylindrical blank until a high-rib thin-wall cylindrical part is formed.
As the limitation of the invention, the shearing spinning wheel comprises an upper shearing working surface and a lower shearing working surface which form an included angle of 90 degrees, and the upper shearing working surface and the lower shearing working surface are in transition connection through a convex arc shearing angle.
As a further limitation of the present invention, the flow rotor includes a first chamfer surface and a second chamfer surface transitionally connected by a circular arc working surface, and the chamfer surface and the flow rotor side working surface are transitionally connected by an exit angle.
As still further defined in the present invention, based on the barrel thermal spinning forming process, a reverse spinning method is adopted, and the method comprises the following steps:
s1, preparing a cylindrical blank, and machining the end face of the original cylindrical part to prepare and form a cylindrical blank with a wheel tooth shape at one end;
s2, installing a mold: clamping the cylindrical part blank to a mandrel of a numerical control spinning machine in a concave-convex matching manner; then assembling the shearing spinning wheel and the flow spinning wheel on a spinning wheel frame of the numerical control spinning machine; finally, assembling the flame spray gun on a numerical control spinning machine, and enabling a nozzle of the flame spray gun to correspond to the plastic deformation area of the cylindrical part blank;
s3, heat-assisted flow forming: adjusting a flow spinning wheel to enable an arc working surface of the flow spinning wheel to be vertically contacted with the surface of the cylindrical part blank, starting a numerical control spinning machine and setting parameters, firstly enabling the cylindrical part blank to rotate under the driving of a mandrel, and simultaneously heating a plastic deformation area of the cylindrical part blank by using a flame spray gun; then controlling the flow rotating wheel to perform sectional thinning on the cylindrical part blank to prepare a stepped cylindrical part;
s4, shearing and forming: adjusting the shearing rotary wheel to enable the arc working surface to be positioned at the step of the cylindrical piece, and adjusting the flowing rotary wheel to enable the convex arc shearing angle to be contacted with the surface of the non-thinned section; continuing the rotation state of the cylindrical blank in step S3, and controlling the shearing rotary wheel and the flow rotary wheel to have synchronous speedvCarrying out staged axial feeding movement, and shearing and forming the cylindrical piece in stages until a high-rib thin-wall cylindrical piece is prepared;
s5, unloading operation: and (3) radially withdrawing the shearing spinning wheel and the flowing spinning wheel, demolding and taking the formed high-rib thin-wall cylindrical part after the spinning wheel is unloaded, and unloading the formed high-rib thin-wall cylindrical part from the mandrel.
As a further limitation of the invention, in the method, the mandrel assembled on the main shaft of the numerical control spinning machine comprises a mandrel body and a mandrel base which are coaxially arranged, wherein one end of the mandrel base, which is close to the assembling surface of the mandrel body, is fixedly provided with a positioning step;
a plurality of grooves are uniformly formed in the end face of the positioning step.
As a further limitation of the present invention, in the method, the number of the shear spinning rollers and the number of the flow spinning rollers are the same, and both are1～3And (4) respectively.
On the basis of thermally-assisted spinning forming, the invention realizes effective combination of flow spinning and shearing forming, namely, the invention finally realizes the integrated forming of a high-rib structure and a thin-wall cylindrical part matrix by combining the forming modes of spinning wheels with different characteristics. Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
firstly, the plasticity of the material is effectively improved by an external heating field in the forming process, and the problem that the high-strength and cylindrical part matrix is difficult to integrally form due to the adoption of the material with high strength and poor plastic deformation capability at room temperature can be solved;
the shearing spinning wheel comprises an upper shearing working surface and a lower shearing working surface which can separate a shearing angle of a material and radially transfer an auxiliary material, and the upper shearing working surface and the lower shearing working surface can respectively assist radial flow control (forming a high-rib structure) of the material and axial flow control (forming a thin-wall cylindrical part matrix) of the material while shearing and separating the cylindrical part blank by utilizing the shearing angle;
thirdly, the flowing rotary wheel is utilized to carry out sectional type thinning on the cylindrical part blank, thinning and material accumulation of the cylindrical part can be preliminarily realized, the rigidity of the rib part structure can be ensured in the shearing forming process, and the connection strength of the rib part structure and the cylindrical part base body part is effectively increased;
in the shearing forming process, the arc working surface of the flow rotary wheel is vertically contacted with the surface of the cylindrical part blank and synchronously and axially fed with the shearing rotary wheel, so that on one hand, the rigidity of the cylindrical part blank can be ensured, and the cylindrical part blank is prevented from wrinkling and instability; on the other hand, the second chamfer surface of the flow rotary wheel is matched with the upper shearing working surface of the shearing rotary wheel, so that the shearing rotary wheel can extrude and shape the outer rib formed by shearing, the back slipping structure of the outer rib can be eliminated, the wall thickness distribution of the rib part is more uniform, and the outer rib is prevented from warping in the forming process;
and fifthly, the flowing rotary wheel is used for replacing a traditional die, the current situation that structural part forming is generally limited to a constraint die in the traditional process is overcome, high-rib thin-wall cylindrical parts with different shape characteristics can be formed only by controlling the motion track of the shearing rotary wheel and the relative position of a back pressure die, and the high-rib thin-wall cylindrical part forming machine has high universality and functionality.
In conclusion, the invention realizes the effective combination of the hot rotational flow forming and the shearing forming, solves the problem of difficult integrated forming of a high-rib structure and a cylindrical part base body (especially materials with poor plastic deformation capability under the room temperature condition such as magnesium alloy, titanium alloy and the like), greatly improves the utilization rate of the materials, is beneficial to promoting the progress of high-performance accurate forming and manufacturing of complex components and meets the requirements of aerospace carrying equipment on advanced forming and manufacturing technologies.
Drawings
The invention is described in further detail below with reference to the figures and the embodiments.
FIG. 1 is a schematic representation of the features of a staged thinning of a cylindrical blank in an embodiment of the present invention;
FIG. 2 is a schematic representation of the flow shear forming features of a cartridge blank in an embodiment of the present invention;
FIG. 3 is a flow chart of a process for forming a high-rib thin-wall cylindrical part according to an embodiment of the invention;
FIG. 4 is a schematic view of a shear roller according to an embodiment of the present invention; FIG. 4a is a top view of the structure of the shearing spinning wheel; FIG. 4b is a cross-sectional view of the shear roller in a structural relationship;
FIG. 5 is a schematic view of a flow wheel according to an embodiment of the present invention; wherein, FIG. 5a is a front view of the structure relationship of the flow wheel; FIG. 5b is a left side view of the shear roller configuration;
FIG. 6 is a schematic structural view of a mandrel in an embodiment of the present invention; wherein, fig. 6a is a front view of the structural relationship of the mandrel; FIG. 6b is a left side view of the structural relationship of the mandrel;
in the figure: 1. a shearing spinning wheel; 2. a flow spinning wheel; 3. a flame spray gun; 4. a mandrel; 5. a cylindrical piece blank; 101. a bidirectional counter bore; 102. shearing a working surface; 103. shearing a working surface downwards; 104. an outward convex arc shear angle; 201. a through hole; 202. a first chamfer surface; 203. a second chamfer surface; 204. a circular arc working surface; 205. a side working face; 401. a mandrel body; 402. a mandrel base; 403. positioning a step; 404. circular arc recess.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the description of the preferred embodiment is only for purposes of illustration and understanding, and is not intended to limit the invention.
Embodiment of the invention discloses a method for forming a high-rib thin-wall cylindrical part by spinning through a heat-assisted multi-spinning wheel
The embodiment combines a shearing forming process on the basis of the existing hot spinning forming process, utilizes the spinning wheel sets with different functions to perform shearing forming treatment after the cylindrical part blank 5 is thinned in a sectional mode, and realizes flow forming of the cylindrical part base body and shearing forming of a plurality of high-rib structures. The method specifically comprises the following steps:
s1, preparing a barrel blank: and machining the original cylindrical part to be machined, uniformly machining a plurality of gear tooth structures at the end part of the original cylindrical part along the circumferential direction, and preparing to form a cylindrical part blank 5 with a tooth form at one end. In this embodiment, an original cylindrical member made of a material having poor plastic deformability at room temperature, such as magnesium alloy or titanium alloy, is selected.
S2, installing a mold: after the cylindrical part blank 5 is clamped to a mandrel 4 of a numerical control spinning machine in a concave-convex matching mode, the shearing spinning wheel 1 and the flowing spinning wheel 2 are assembled on a spinning wheel frame of the numerical control spinning machine, and the relative positions of the shearing spinning wheel 1, the flowing spinning wheel 2 and the cylindrical part blank 5 are adjusted. Finally, the flame spray gun 3 is assembled on a numerical control spinning machine, and the nozzle of the flame spray gun 3 corresponds to the plastic deformation area of the cylindrical piece blank 5.
As shown in fig. 6a and 6b, the mandrel 4 assembled on the main shaft of the numerical control spinning machine includes a mandrel body 401 and a mandrel base 402 which are coaxially arranged. A plurality of threaded holes are uniformly distributed in the circumferential direction at the end part of one side of the mandrel base 402, and the mandrel base can be connected with a machine tool spindle through bolts; the other side end of the mandrel base 402 is fixedly provided with a positioning step 403, and four circular arc grooves 404 are uniformly formed in the end surface of the positioning step 403 close to the assembling surface of the mandrel body 401. In the forming process, the circular arc-shaped groove 404 is matched with the protruding structure of the cylindrical part blank 5, so that the cylindrical part blank 5 can be ensured to rotate in the circumferential direction under the driving of the mandrel 4.
In step S1, the length and width of the protruding structure formed on the cylindrical blank 5 are slightly smaller than the size of the circular arc-shaped groove 404, so that the cylindrical blank 5 can be mounted on or dismounted from the mandrel 4.
The shearing spinning wheel 1 is mainly used for applying local shearing deformation to a wall thickness plane of the cylindrical part blank 5 so as to shear and separate the material of the cylindrical part blank 5. As shown in fig. 4a and 4b, the shearing spinning roller 1 is a biconical spinning roller with a hollow revolving body structure, and is uniformly provided with a plurality of bidirectional countersunk holes 101 in the normal direction, and can be fixedly connected with a spinning roller frame by fastening bolts; an upper shearing working surface 102 and a lower shearing working surface 103 which are transitionally connected through an outward convex arc shearing angle 104 are arranged on the circumference of the shear head, and the included angle between the upper shearing working surface 102 and the lower shearing working surface 103 is 90 degrees. Wherein, the fillet diameter of the convex arc shear angle 104R=0.1～0.5mm。
The flow rotary wheel 2 is pressed down periodically along the axial direction and moves along a lost motion, and has multiple functions of thinning the cylindrical blank 5 in the flow forming stage and applying radial pressure to the cylindrical blank 5 in the shearing forming stage. As shown in fig. 5a and 5b, the flow turning wheel 2 is a biconical turning wheel, and a through hole 201 for connecting a turning wheel frame is formed at the center thereof; the first chamfer surface 202 and the second chamfer surface 203 which are in transition connection through the arc working surface 204 are arranged on the circumference of the flow rotary wheel, and the first chamfer surface 202, the second chamfer surface 203 and the side working surface 205 of the flow rotary wheel 2 are in transition connection through the exit angle.
It should be noted that the number of the shearing spinning rollers 1 and the number of the flow spinning rollers 2 on the numerical control spinning machine are the same, and both are1～3And (4) respectively. In the embodiment, 2 shearing spinning wheels 1 are arranged and symmetrically arranged on a spinning wheel frame of the numerical control spinning machine; the number of the flow rotary wheels 2 is also 2, and the flow rotary wheels are respectively in one-to-one correspondence with the shearing rotary wheels 1.
S3, heat-assisted flow forming: starting the numerical control spinning machine, setting the track of the flow spinning wheel 2 through a numerical control system, heating the plastic deformation area of the cylindrical part blank 5 by using the flame spray gun 3, and then controlling the flow spinning wheel 2 to thin the cylindrical part blank 5 in a sectional mode.
The method specifically comprises the following steps: firstly, the position of the spinning wheel frame is adjusted by using a numerical control spinning machine until the circular arc working surface 204 of the flow spinning wheel 2 is vertically contacted with the surface of the cylindrical piece blank 5, as shown in fig. 1.And then, starting the numerical control spinning machine, setting the range of the feed ratio to be 0.1-2, adopting a counter-rotating mode to enable the cylindrical part blank 5 to rotate in the circumferential direction under the driving of the mandrel 4, and simultaneously heating the plastic deformation area of the cylindrical part blank 5 by using the flame spray gun 3. After the forming temperature of the material is reached, the radial pressing down t of the flow rotary wheel 2 is controlled, and the axial feeding x of the cylindrical part blank 5 is carried out1Thinning the cylindrical piece blank 5; then the flow rotary wheel 2 is controlled to be far away from the cylindrical part blank 5, and the idle stroke feeding x is carried out2(ii) a Periodically loading three times and unloading two times along the axial direction of the cylindrical part blank 5 at a constant axial feeding speed to prepare and form the cylindrical part blank 5 with the thickness distributed in a step shape, as shown in figure 1.
S4, shearing and forming: continuing the rotation state of the tubular blank 5 in the step S3, setting the tracks of the flow spinning wheel 2 and the cutting spinning wheel 1 through a numerical control system, and controlling the flow spinning wheel 2 and the cutting spinning wheel 1 to cut and form the tubular blank 5.
Due to the presence of the thinned section of the cylindrical blank 5, the shear forming can only start from the side close to the mandrel base 402, specifically: firstly, the position of a spinning wheel frame is adjusted by using a numerical control spinning machine until the arc working surface 204 of the flow spinning wheel 2 is vertically contacted with the surface of the cylindrical part at the non-thinned section, and the convex arc shearing angle 104 of the shearing spinning wheel 1 is contacted with the end surface of the stacking position of the cylindrical part blank 5. Because two annular outer ribs need to be cut and formed in the embodiment, as shown in fig. 2, the flow rotary wheel 2 is vertically contacted with the surface of the point stacking position of the cylindrical blank 5A in advance, the lower cutting working surface 103 of the cutting rotary wheel 1 is contacted with the plane of the point right thinned section of the cylindrical blank 5A, and the convex arc cutting angle 104 of the cutting rotary wheel 1 is positioned at the step of the plane of the point right thinned section and the non-thinned section at the point left.
Then, the cylindrical blank 5 is rotated in the continuation step S3, and the shear rotor 1 and the flow rotor 2 are controlled to have a synchronous speedvPerforming axial feed movement with the axial feed distance not greater than x2And (5) 0.6t, forming a first annular outer rib.
After the first annular outer rib is formed, the shearing rotary wheel 1 and the flowing rotary wheel 2 are respectively subjected to tool retracting movement to prevent the formed annular outer rib from being damaged, then tool setting operation is carried out according to the process, a second annular outer rib is sheared and formed at the stacking position of the point 5B of the cylindrical part blank, and the shearing and forming process is the same as that of the first annular outer rib.
S4, unloading operation: after the shearing spinning wheel 1 and the flow spinning wheel 2 are radially withdrawn, the spinning wheel unloading operation is executed; and then demolding and taking the piece, and separating the high-rib thin-wall cylindrical piece from the core shaft 4 by adopting a mode of ejecting out by a hydraulic cylinder of a numerical control spinning machine to finish the unloading operation.
Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A method for forming a high-rib thin-wall cylindrical part by spinning through a heat-assisted multi-spinning wheel is based on a cylindrical part spinning process and is characterized in that: firstly, a flowing rotating wheel is adopted to carry out sectional thinning on a cylindrical part blank; and secondly, applying local shearing deformation to the stacking position of the cylindrical blank by adopting a shearing spinning wheel, and simultaneously controlling the synchronous axial feeding of the flowing spinning wheel and the shearing spinning wheel to apply radial constraint to the cylindrical blank until a high-rib thin-wall cylindrical part is formed.
2. The method of thermally assisted spinning forming of a high rib thin wall cylinder of claim 1, wherein: the shearing spinning wheel comprises an upper shearing working surface and a lower shearing working surface, wherein an included angle between the upper shearing working surface and the lower shearing working surface is 90 degrees, and the upper shearing working surface and the lower shearing working surface are in transition connection through a convex arc shearing angle.
3. The method of thermally assisted spinning forming of a high rib thin wall cylinder of claim 2, wherein: the flow rotating wheel comprises a first chamfer surface and a second chamfer surface which are in transition connection through an arc working surface, and the chamfer surface and the side working surface of the flow rotating wheel are in transition connection through an exit chamfer.
4. A method of thermally assisted spinning forming of a high rib thin walled cylinder according to claim 3 wherein: based on a cylindrical part hot spinning forming process, a reverse spinning mode is adopted, and the method comprises the following steps:
s1, preparing a cylindrical blank, and machining the end face of the original cylindrical part to prepare and form a cylindrical blank with a wheel tooth shape at one end;
s2, installing a mold: clamping the cylindrical part blank to a mandrel of a numerical control spinning machine in a concave-convex matching manner; then assembling the shearing spinning wheel and the flow spinning wheel on a spinning wheel frame of the numerical control spinning machine; finally, assembling the flame spray gun on a numerical control spinning machine, and enabling a nozzle of the flame spray gun to correspond to the plastic deformation area of the cylindrical part blank;
s3, heat-assisted flow forming: adjusting a flow spinning wheel to enable an arc working surface of the flow spinning wheel to be vertically contacted with the surface of the cylindrical part blank, starting a numerical control spinning machine and setting parameters, firstly enabling the cylindrical part blank to rotate under the driving of a mandrel, and simultaneously heating a plastic deformation area of the cylindrical part blank by using a flame spray gun; then controlling the flow rotating wheel to perform sectional thinning on the cylindrical part blank to prepare a stepped cylindrical part;
s4, shearing and forming: adjusting the shearing rotary wheel to enable the convex arc shearing angle to be positioned at the step of the cylindrical piece, and adjusting the flowing rotary wheel to enable the arc working surface to be vertically contacted with the surface of the non-thinned section; continuing the rotation state of the cylindrical blank in step S3, and controlling the shearing rotary wheel and the flow rotary wheel to have synchronous speedvCarrying out staged axial feeding movement, and shearing and forming the cylindrical piece in stages until a high-rib thin-wall cylindrical piece is prepared;
s5, unloading operation: and (3) radially withdrawing the shearing spinning wheel and the flowing spinning wheel, demolding and taking the formed high-rib thin-wall cylindrical part after the spinning wheel is unloaded, and unloading the formed high-rib thin-wall cylindrical part from the mandrel.
5. The method of thermally assisted spinning forming of a high rib thin wall cylinder of claim 4 wherein: the mandrel assembled on the main shaft of the numerical control spinning machine in the method comprises a mandrel body and a mandrel base which are coaxially arranged, wherein a positioning step is fixedly arranged at one end of the mandrel base, which is close to the assembling surface of the mandrel body;
a plurality of grooves are uniformly formed in the end face of the positioning step.
6. A method of thermally assisted spinning forming of high rib thin walled cylinder according to claim 4 or 5 wherein: in the method, the shearing rotating wheels and the flow rotating wheels are arranged in the same number and are all1～3And (4) respectively.
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| CN117161700A (en) * | 2023-09-13 | 2023-12-05 | 东风襄阳旋压技术有限公司 | Hollow motor shaft excircle shoulder forming process and device and hollow motor shaft spinning forming process |
| CN118106395A (en) * | 2024-04-18 | 2024-05-31 | 沈阳欧施盾新材料科技有限公司 | Gas cylinder wall thickness non-uniformity adjustment method, device and medium based on spinning forming |
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| US20150260426A1 (en) * | 2009-11-24 | 2015-09-17 | Jeffrey Allen Hermanson | Sealed and/or Reinforced Flanged Ring Connector for Single- and Double-Wall HVAC Ducting |
| RU2010138710A (en) * | 2010-09-21 | 2012-03-27 | Федеральное Государственное унитарное предприятие "Государственное научно-производственное предприятие "Сплав" (RU) | METHOD FOR ROTARY EXTRACTION OF THIN-WALLED CASES |
| CN110479841A (en) * | 2019-08-02 | 2019-11-22 | 武汉理工大学 | Manufacturing process is rolled in the large-scale horizontal high multidirectional rotation of muscle thin-walled ring multi-pass |
| CN113245428A (en) * | 2021-06-21 | 2021-08-13 | 西北工业大学 | Oblique rolling type spinning forming method for cylindrical part with inner ribs |
| CN113617915A (en) * | 2021-07-29 | 2021-11-09 | 西北工业大学 | Local loading integral forming method for special-shaped section rib cylindrical part |
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| CN117161700A (en) * | 2023-09-13 | 2023-12-05 | 东风襄阳旋压技术有限公司 | Hollow motor shaft excircle shoulder forming process and device and hollow motor shaft spinning forming process |
| CN117161700B (en) * | 2023-09-13 | 2024-08-02 | 东风襄阳旋压技术有限公司 | Hollow motor shaft excircle shoulder forming process and device and hollow motor shaft spinning forming process |
| CN118106395A (en) * | 2024-04-18 | 2024-05-31 | 沈阳欧施盾新材料科技有限公司 | Gas cylinder wall thickness non-uniformity adjustment method, device and medium based on spinning forming |
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