CN114523027B - Circular turning spinning forming method for spiral rib cylinder capable of eliminating height difference of circumferential rib filling - Google Patents
Circular turning spinning forming method for spiral rib cylinder capable of eliminating height difference of circumferential rib filling Download PDFInfo
- Publication number
- CN114523027B CN114523027B CN202210166922.4A CN202210166922A CN114523027B CN 114523027 B CN114523027 B CN 114523027B CN 202210166922 A CN202210166922 A CN 202210166922A CN 114523027 B CN114523027 B CN 114523027B
- Authority
- CN
- China
- Prior art keywords
- spiral
- rib
- spinning
- filling
- cylindrical workpiece
- 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.)
- Active
Links
- 238000009987 spinning Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 4
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 9
- 238000005429 filling process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
Abstract
The invention belongs to the technical field of spinning forming, and particularly discloses a circular turning spinning forming method for a cylindrical workpiece with spiral ribs, which is used for eliminating the height difference of circumferential rib filling; in the rotating process of the cylindrical workpiece, the rotating wheel axially feeds, so that the cylindrical workpiece part above the spiral rib groove of the core mold enters the spiral rib groove of the core mold under the rolling of the rotating wheel to form a spiral inner rib, and a cylinder with the spiral inner rib is obtained. According to the invention, the rotation direction of the core mold is circularly changed in the axial feeding process of the spinning wheel, so that the filling heights of the spiral inner ribs with different spinning directions are kept consistent, and the height difference of the spiral inner ribs with different spinning directions, which occurs in the traditional single-turning spinning forming, of the cylindrical workpiece with the spiral inner ribs is eliminated. The invention is suitable for spin forming of the cylinder with the spiral inner rib.
Description
Technical Field
The invention belongs to the technical field of spinning forming, and particularly relates to a circulating steering spinning forming method for a spiral rib cylinder with a circular rib filling height difference.
Background
The cylindrical part with the spiral inner ribs is internally provided with the reinforcing ribs which are spirally crossed in two directions, so that the integral strength and rigidity of the member can be greatly improved, and the cylindrical part with the spiral inner ribs is a key member which is needed in the fields of aerospace and weaponry. Spinning can realize filling of the inner rib of the component and forming of the profile simultaneously through partial loading of the spinning roller, and is an advantageous technology for realizing high-performance integral forming and manufacturing of the cylindrical piece with the spiral inner rib. However, as the component is provided with two spiral inner ribs with different rotation directions in the circumferential direction, the two spiral inner ribs with different rotation directions have the defect of unequal filling heights in the single-direction rotation mode of the traditional single-direction rotary spinning core die, and the forming quality of the component is seriously affected. Therefore, how to control the filling height difference of the spiral inner ribs of the cylindrical part with the spiral inner ribs in the traditional single-turn spinning forming is a key technical problem to be solved urgently.
At present, no report exists on a method for eliminating the filling height difference of the spiral inner ribs of the cylindrical part with the spiral inner ribs in different spinning directions. Literature Xia, q.x., sun, l.y., cheng, x.q., et al 2009, analysis of the forming defects of the trapezoidal inner-gear spinning of the International Conference on Industrial Engineering and Engineering Management,2333-2337, found that a longitudinally ribbed inner cylindrical member exhibited internal rib shape asymmetry defects during conventional single turn spinning, thereby suggesting a forming method employing two pass spinning wherein the two pass mandrel employed different rotational directions, which method may reduce the degree of internal rib shape asymmetry to some extent. However, this method relies on the accurate calculation of the dispensing ratio of the reduction of the two pass spinning roller, and this ratio is affected by a plurality of spinning process parameters, so this method is not versatile. And for the cylindrical part with the spiral inner rib, the rib is dislocated when two spinning passes are adopted, so that only one-pass spinning forming can be adopted, and the method is not suitable for eliminating the filling height difference of the cylindrical part with the spiral inner rib when spinning the spiral inner rib with different spinning directions.
Disclosure of Invention
The invention aims to provide a circular turning and spinning forming method for a spiral rib cylinder, which is used for eliminating the height difference of annular rib filling, so as to eliminate the height difference of different spiral rib filling of a spiral inner rib cylinder in the traditional single turning and spinning forming.
The technical method adopted by the invention for achieving the purpose is as follows:
a method for forming a cylindrical workpiece by circular turning and spinning with spiral rib cylinder for eliminating the height difference of circumferential rib filling includes such steps as fixing the cylindrical workpiece on a core mould with spiral rib slot, arranging a spinning wheel on the cylindrical workpiece, and cyclically and alternatively rotating the core mould clockwise and anticlockwise to drive the cylindrical workpiece to rotate; in the rotating process of the cylindrical workpiece, the rotating wheel axially feeds, so that the cylindrical workpiece part above the spiral rib groove of the core mold enters the spiral rib groove of the core mold under the rolling of the rotating wheel to form a spiral inner rib, and a cylinder with the spiral inner rib is obtained.
As a limitation: the process of circularly and alternately rotating the core mold in the clockwise and anticlockwise directions comprises the following steps: the mandrel rotates clockwise, the rotating speed is increased from 0 to S, the axial feeding of the S back-rotation wheel is achieved, the feeding is stopped after the axial feeding stroke reaches deltaz, the rotating speed starts to be reduced from S to 0, the mandrel rotates anticlockwise, the rotating speed is increased from 0 to S, the axial feeding of the S back-rotation wheel is achieved, the feeding is stopped after the axial feeding stroke reaches deltaz, and the rotating speed starts to be reduced from S to 0; the core mould circularly and alternately rotates in the clockwise and anticlockwise directions according to the process; s is a preset rotating speed, and Deltaz is a preset axial feeding stroke.
As a further definition: the calculation formula of the axial feed stroke deltaz is as follows:wherein i is the number of times of rolling the inner ribs of different spirals in each rotation direction by the spinning wheel, f is the feeding ratio of the spinning wheel, and N is the number of the spinning wheels.
By adopting the scheme, compared with the prior art, the invention has the following beneficial effects:
(1) According to the cyclic turning spinning forming method for eliminating the annular rib filling height difference, the rotation direction of the mandrel is circularly changed in the axial feeding process of the spinning roller, so that the loading track of the spinning roller on a workpiece is changed from a single-spiral loading track in the traditional single-turning spinning to two spiral loading tracks with different rotation directions circularly alternated, and further, the relative spiral directions of the two spiral inner ribs with different rotation directions and the annular rib spacing are circularly changed, and therefore, the filling trend strength and the filling material quantity of the two spiral inner ribs with different rotation directions in the filling process are circularly changed, the difference of the filling trend strength of the two inner ribs and the difference of the filling material quantity can be eliminated in the filling process, and finally, the filling height difference of the two spiral inner ribs with different rotation directions is eliminated.
(2) The circular turning spinning forming method for eliminating the annular rib filling height difference with the spiral rib cylinder can be carried out on the original traditional spinning platform, and other auxiliary devices are not required to be added, so that the operation is simple.
The invention is suitable for spin forming of the cylinder with the spiral inner rib.
Drawings
The invention will be described in more detail below with reference to the accompanying drawings and specific examples.
FIG. 1 is a schematic view of a structure of a cylinder with a spiral inner rib;
FIG. 2 is a schematic diagram of a cyclic turning spin forming method of a spiral ribbed drum with elimination of circumferential rib filling height differences;
FIG. 3 is a graph showing the relationship between the rotational speed of the core mold and the axial feeding travel of the rotor shaft over time;
FIG. 4 is a schematic diagram showing a comparison of the heights of helical ribs in different directions in a cross section of a barrel with the helical ribs;
FIG. 5 is a spiral loading trajectory with the mandrel rotated counterclockwise and rotated clockwise;
in the figure: 1. right-handed spiral inner ribs; 2. a left-handed spiral inner rib; 3. a core mold; 4. spiral rib grooves; 5. a spinning wheel; 6. a cylindrical work; 7. spiral inner ribs; 8. a right-handed spiral loading track; 9. the left-handed helical loading trajectory.
Detailed Description
The invention is further described below in connection with the embodiments, but it will be understood by those skilled in the art that the invention is not limited to the following embodiments, and any modifications and equivalent changes based on the specific embodiments of the invention are within the scope of the claims.
Embodiment of the invention the cyclic steering spinning forming method of the spiral rib cylinder with the elimination of the height difference of the circumferential rib filling
The structural schematic diagram of the cylinder body with the spiral inner ribs 7 is shown in fig. 1, the cylinder body is of a hollow thin-wall structure, the inner surface of the cylinder body comprises two spiral inner ribs 7 with different spiral directions, namely a right-handed spiral inner rib 1 and a left-handed spiral inner rib 2, the spiral inner ribs 7 with different spiral directions are distributed in a crossed mode, and the integral strength and the integral rigidity of the hollow thin-wall cylinder body can be greatly improved.
A method for forming a circular turning spinning with a spiral rib cylinder for eliminating the height difference of circumferential rib filling is shown in figure 2, which comprises the steps of fixing a cylindrical workpiece 6 on a core mold 3 provided with a spiral rib groove 4, arranging a spinning wheel 5 on the cylindrical workpiece 6, circularly and alternately rotating the core mold 3 in a clockwise direction and a counterclockwise direction, and driving the cylindrical workpiece 6 to rotate; in the rotating process of the cylindrical workpiece 6, the rotary wheel 5 carries out axial feeding, so that the part of the cylindrical workpiece 6 above the spiral rib groove 4 of the core mold 3 enters the spiral rib groove 4 of the core mold 3 under the rolling of the rotary wheel 5 to form a spiral inner rib 7, and a cylinder with the spiral inner rib 7 is obtained.
The process of cyclically and alternately rotating the core mold 3 in the clockwise and counterclockwise directions is as follows: the mandrel 3 rotates clockwise, the rotating speed is increased from 0 to S, the axial feeding of the S back-rotation wheel is achieved, the feeding is stopped after the axial feeding stroke reaches deltaz, meanwhile, the rotating speed starts to be reduced from S to 0, the mandrel rotates anticlockwise again, the rotating speed is increased from 0 to S, the axial feeding of the S back-rotation wheel is achieved, the feeding is stopped after the axial feeding stroke reaches deltaz, and meanwhile, the rotating speed starts to be reduced from S to 0; the mandrel 3 is circularly and alternately rotated in the clockwise and counterclockwise directions according to the above process; s is a preset rotating speed, and Deltaz is a preset axial feeding stroke.
As shown in fig. 3, the relation between the rotational speed of the core mold 3 and the axial feed stroke of the rotor 5 over time is shown by the calculation formula of the axial feed stroke Δz:wherein i is the number of times of rolling the inner ribs 7 of different spirals in each rotation direction by the spinning wheel 5, and f is the feeding ratio of the spinning wheel 5, namely the ratio of the feeding speed of the spinning wheel 5 to the rotating speed of the core mold 3Values are in mm/r and N is the number of spinning wheels 5.
The number of times the different helical inner ribs 7 are crushed by the rotor 5 in each rotation direction is generally 1-4 times, i.e. i=1, 2,3,4; the usual feed ratio range for cylindrical spinning is 0.5-3.0mm/r, i.e. f=0.5-3.0 mm/r; the spinning of the cylindrical part usually adopts a single-spinning wheel, a double-spinning wheel or a three-spinning wheel mode, namely N=1, 2 and 3; in the embodiment, the number of times that the spiral inner ribs 7 are rolled by the rotary wheels 5 in each rotation direction is 2, namely i=2, the feeding ratio f=1.5 mm/r, and the number of the rotary wheels 5 n=2, so that the axial feeding stroke Δz=1.5 mm; the rotating speed of the core mold in the spinning process is generally 30-300r/min, and because the larger rotating speed in the internal rib filling process can cause large vibration of the machine tool, the embodiment adopts S=60 r/min;
in the conventional single-turn spinning forming, the mandrel 3 rotates anticlockwise, and corresponds to a right-handed spiral loading track, so that a cylindrical part with the spiral inner rib 7 is obtained, a comparison schematic diagram of heights of the spiral inner ribs 7 with different directions on one cross section is shown in fig. 4 (a), and the height of the right-handed spiral inner rib 1 is H '' R The height of the left-handed spiral inner rib 2 is H' L ,H′ R ≠H′ L The method comprises the steps of carrying out a first treatment on the surface of the The comparison of the heights of the spiral inner ribs 7 with different spiral directions on the same cross section of the cylindrical part with the spiral inner ribs 7 obtained by the method of the embodiment is shown in fig. 4 (b), and the height of the right-handed spiral inner rib 1 is H R The height of the left-handed spiral inner rib 2 is H L ,H R ＝H L 。
The right-handed spiral loading track 8 under the anticlockwise rotation of the mandrel 3 is shown in fig. 5 (a), and the relative spiral directions of the right-handed spiral inner rib 1 and the right-handed spiral loading track 8 are the same at the moment, so that the right-handed spiral inner rib 1 shows a weak filling trend in the filling process; the left-handed spiral inner rib 2 and the right-handed spiral loading track 8 have opposite spiral directions, and have strong filling trend in the filling process. Meanwhile, on the same cross section as shown in fig. 5 (a), the circumferential rib spacing D of the right-handed helical inner rib 1 1 Smaller, and the left-handed helical inner rib 2 has a circumferential rib spacing D 2 Larger, so that in this section position the right-handed helical rib 1 has less filling material during filling, whereas the left-handed helical rib has less filling materialThe inner rib 2 is filled with more filling materials in the filling process. The left-handed spiral loading track 9 under clockwise rotation of the mandrel 3 is shown in fig. 5 (b), and the opposite spiral directions of the right-handed spiral inner rib 1 and the left-handed spiral loading track 9 are opposite, so that the right-handed spiral inner rib 1 shows a strong filling trend in the filling process; and the left-handed spiral inner rib 2 has the same relative spiral direction as the left-handed spiral loading track 9, and shows weak filling trend in the filling process. Meanwhile, in fig. 5 (b), the circumferential rib pitch D of the right-handed helical inner rib 1 1 Larger, and the space D between the circumferential ribs of the left-handed spiral inner rib 2 2 Smaller, so that in this section position the right-handed helical rib 1 is filled with more filling material during filling, while the left-handed helical rib 2 is filled with less filling material during filling. In summary, the relative spiral direction and the circumferential rib pitch of the spiral inner ribs 7 of the two different spiral directions are mutually converted when the core mold 3 rotates counterclockwise and rotates clockwise. Therefore, by adopting the method of circularly turning the mandrel 3, the filling trend of the two spiral inner ribs 7 with different turning directions and the quantity of the fillable materials can be circularly changed, so that the difference of the filling trend of the two spiral inner ribs 7 with different turning directions and the quantity of the fillable materials can be eliminated, and finally the filling height difference of the two spiral inner ribs 7 with different turning directions can be eliminated.
Claims (2)
1. A cyclic turning spinning forming method with spiral rib cylinders for eliminating the height difference of circumferential rib filling is characterized in that a cylindrical workpiece is fixed on a core mould provided with spiral rib grooves, a spinning wheel is arranged on the cylindrical workpiece, and the core mould circularly and alternately rotates in a clockwise direction and a counterclockwise direction and drives the cylindrical workpiece to rotate; in the rotation process of the cylindrical workpiece, the rotary wheel axially feeds, so that a cylindrical workpiece part above the spiral rib groove of the core mold enters the spiral rib groove of the core mold under the rolling of the rotary wheel to form a spiral inner rib, and a cylinder with the spiral inner rib is obtained;
the process of circularly and alternately rotating the core mold in the clockwise and anticlockwise directions comprises the following steps: the mandrel rotates clockwise, the rotating speed is increased from 0 to S, the axial feeding of the S back-rotation wheel is achieved, the feeding is stopped after the axial feeding stroke reaches deltaz, the rotating speed starts to be reduced from S to 0, the mandrel rotates anticlockwise, the rotating speed is increased from 0 to S, the axial feeding of the S back-rotation wheel is achieved, the feeding is stopped after the axial feeding stroke reaches deltaz, and the rotating speed starts to be reduced from S to 0; the core mould circularly and alternately rotates in the clockwise and anticlockwise directions according to the process; s is a preset rotating speed, and Deltaz is a preset axial feeding stroke.
2. The cyclic steering spinning forming method with spiral rib drum for eliminating the circumferential rib filling height difference according to claim 1, wherein the calculation formula of the axial feeding stroke Δz is:
wherein i is the number of times of rolling the inner ribs of different spirals in each rotation direction by the spinning wheel, f is the feeding ratio of the spinning wheel, and N is the number of the spinning wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210166922.4A CN114523027B (en) | 2022-02-23 | 2022-02-23 | Circular turning spinning forming method for spiral rib cylinder capable of eliminating height difference of circumferential rib filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210166922.4A CN114523027B (en) | 2022-02-23 | 2022-02-23 | Circular turning spinning forming method for spiral rib cylinder capable of eliminating height difference of circumferential rib filling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114523027A CN114523027A (en) | 2022-05-24 |
| CN114523027B true CN114523027B (en) | 2023-12-22 |
Family
ID=81624916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210166922.4A Active CN114523027B (en) | 2022-02-23 | 2022-02-23 | Circular turning spinning forming method for spiral rib cylinder capable of eliminating height difference of circumferential rib filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114523027B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109396262A (en) * | 2018-10-12 | 2019-03-01 | 西北工业大学 | One kind is for rib spinning core die and release method in band spiral |
| CN109465321A (en) * | 2018-11-30 | 2019-03-15 | 四川航天长征装备制造有限公司 | A kind of manufacturing method of the inside reinforcing rib cylinder of band |
| CN110586730A (en) * | 2019-09-17 | 2019-12-20 | 上海交通大学 | Finished product of cylindrical part with inner wall longitudinal ribs and forming method thereof |
| DE102019106209A1 (en) * | 2019-03-12 | 2020-09-17 | Federal-Mogul Valvetrain Gmbh | Process for the production of a hollow valve for internal combustion engines |
| 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 |
| CN113500181A (en) * | 2021-08-24 | 2021-10-15 | 中南大学 | Rotary extrusion forming method of reinforced cylinder shell |
-
2022
- 2022-02-23 CN CN202210166922.4A patent/CN114523027B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109396262A (en) * | 2018-10-12 | 2019-03-01 | 西北工业大学 | One kind is for rib spinning core die and release method in band spiral |
| CN109465321A (en) * | 2018-11-30 | 2019-03-15 | 四川航天长征装备制造有限公司 | A kind of manufacturing method of the inside reinforcing rib cylinder of band |
| DE102019106209A1 (en) * | 2019-03-12 | 2020-09-17 | Federal-Mogul Valvetrain Gmbh | Process for the production of a hollow valve for internal combustion engines |
| CN110586730A (en) * | 2019-09-17 | 2019-12-20 | 上海交通大学 | Finished product of cylindrical part with inner wall longitudinal ribs and forming method thereof |
| 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 |
| CN113500181A (en) * | 2021-08-24 | 2021-10-15 | 中南大学 | Rotary extrusion forming method of reinforced cylinder shell |
Non-Patent Citations (1)
| Title |
|---|
| 带内筋筒形件强力旋压成形试验研究;张利鹏等;CMET.锻压装备与制造技术(第04期);第86-87页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114523027A (en) | 2022-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113245428B (en) | Inclined rolling type spinning forming method for cylindrical part with inner ribs | |
| CN107962098B (en) | The long cylinder multi-pass spinning manufacturing process of modal circumferential stiffening rib in a kind of band | |
| CN102764841B (en) | Core mold and shaping method for shaping strip annular internal reinforced rib rotary body thin-wall part | |
| CN1455731A (en) | Tire manufacturing method | |
| CN111420992B (en) | Sizing rolling forming method for axial inner rib cylindrical part | |
| CN108160793A (en) | A kind of internal rolling equipment | |
| CN114523027B (en) | Circular turning spinning forming method for spiral rib cylinder capable of eliminating height difference of circumferential rib filling | |
| CN1281347C (en) | Workpiece shaping method and roller | |
| CN113927101B (en) | Grinding method for face gear worm grinding wheel | |
| TWI729689B (en) | Automatic nut tapping equipment | |
| CN202741657U (en) | Core mold for forming band annular internal reinforcement rib revolving thin-wall part | |
| CN1806953A (en) | Method for forming a workpiece and rolling machine | |
| JP5152889B2 (en) | Ribbon rubber molding machine | |
| CN110479836B (en) | Spin forming method for part with regular polygonal section | |
| CN113967800B (en) | Machining process of barrel part reinforcing rib based on laser grooving and hot rolling | |
| CN105710309A (en) | Rotary type sand mold three-dimensional printer | |
| CN1267613C (en) | Multihead threading reinforcing bar joint, producer and producing method thereof | |
| KR100939572B1 (en) | Device for manufacturing pipe continuously | |
| CN113083974B (en) | Thin-wall grid rib cylinder rolling-flexible growth composite forming method | |
| CN213052611U (en) | Cold heading machine with high-precision conveying function | |
| CN114626153A (en) | Method for eliminating uneven high axial distribution of spinning ribs of cylindrical part with spiral inner ribs | |
| CN1078931A (en) | Ring Surface Worm Shaping method | |
| JP2002283195A (en) | Method for manufacturing ball screw shaft | |
| CN103752953A (en) | Disperse type gear rolling machining method | |
| CN114273571B (en) | Roller extrusion forming die for cylindrical part with internal grid ribs |
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 |