CN116274583A - Manufacturing method of conical cylindrical thin-wall part - Google Patents
Manufacturing method of conical cylindrical thin-wall part Download PDFInfo
- Publication number
- CN116274583A CN116274583A CN202310205592.XA CN202310205592A CN116274583A CN 116274583 A CN116274583 A CN 116274583A CN 202310205592 A CN202310205592 A CN 202310205592A CN 116274583 A CN116274583 A CN 116274583A
- Authority
- CN
- China
- Prior art keywords
- blank
- plate
- thin
- platy
- conical
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000010008 shearing Methods 0.000 claims abstract description 4
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 19
- 238000009987 spinning Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000003754 machining Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000005242 forging Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a manufacturing method of a conical cylindrical thin-wall part, which comprises the following steps: mechanically processing plate-shaped blanks, shoveling and spin-forming a cylindrical structure of a part, shearing and spin-forming a conical thin-wall structure of the part, and mechanically processing the rest of two ends. The invention provides a manufacturing method of a conical cylindrical thin-wall part, which has the advantages of short production period, high raw material utilization rate and low manufacturing finished product.
Description
Technical Field
The invention belongs to the technical field of plastic forming, and relates to a manufacturing method of a conical cylindrical thin-wall part, in particular to a manufacturing method of a thin-wall part with a cylindrical small end and a conical throat to a large end.
Background
A typical part of the conical thin-wall part is a rocket engine lining, the material is mainly copper and copper alloy, one side of the material is a cooling pipeline for loading liquid hydrogen and liquid oxygen, and the other side of the material is high-temperature fuel gas, so that the conical thin-wall part has wide application in the aerospace field.
In recent years, with the development of aerospace industry, the production and delivery quantity of rocket engines is increasing, and the demand for rocket engine liners with thin conical walls is increasing. At present, the conical cylindrical thin-wall part is formed by turning a forging, and the following problems are gradually exposed in the production process:
(1) The forging is formed by hot die forging by a large hydraulic press, the forging process flow is complex, the production period is long, and the delivery period is about 1 month;
(2) By adopting the forging scheme, the machining allowance is large, the utilization rate of raw materials is only 10%, and the cost of raw materials is high.
Therefore, there is a need for a method for manufacturing a tapered thin-walled part, which shortens the production cycle and reduces the manufacturing cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a manufacturing method of a conical cylindrical thin-wall part.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a manufacturing method of a cone-shaped thin-wall part comprises the following steps:
A. designing a platy blank of the conical thin-walled part, calculating the structural size of the platy blank according to the size of the conical thin-walled part, and then processing the plate into the required size of the platy blank:
thickness of boss of plate-like blank
The outer circle d3= (1.25-4) d1 of the plate-shaped blank boss,
thickness of plate-like blank
Outer circle d4=d2+ (1.5-3) (t) 1 -t 2 )，
The inner diameter d2= (0.25-0.75) D1 of the platy blank,
wherein D1 is the outer diameter of the small-end cylindrical structure, D1 is the inner diameter of the small-end cylindrical structure, t 0 The wall thickness from the throat part to the large end is of a conical thin-wall structure, theta is the cone angle, and d2 is the outer diameter of the large end;
B. the cylindrical structure of the conical thin-walled part is shoveled and formed, a rotary wheel with a round angle radius is used for cutting into a plate surface along a direction forming an angle with the axis of a rotating plate-shaped blank and is shoveled and rolled radially, so that the blank is divided into two parts, and one part is not acted by shoveling and rolling force and is left in place; the other part is shoveled and rolled by a rotary wheel in an inclined way to generate radial flow, so that a cylindrical structure can be obtained;
C. the conical thin-wall structure of the conical thin-wall part is cut and spin-formed, a platy blank is pressed on the end face of a core mold by a tailstock disc and rotates along with a main shaft, a spinning wheel transversely approaches the platy blank and keeps a certain gap value with the core mold, meanwhile, the spinning wheel makes uniform motion through longitudinal feeding motion of the spinning wheel, and at the moment, the spinning wheel applies pressure to the platy blank to enable the material to axially shear and deform point by point and cling to the core mold, so that the conical thin-wall structure with thinned wall thickness can be obtained;
D. machining the allowance of two end surfaces of the cone-shaped thin-wall part.
Preferably, in the step B, the parameters of the shoveling and spin forming process are as follows: round corner r formed by rotary wheel 1 0.5-3 mm; included angle alpha between rotation axis of rotary wheel and axis of circular plate-shaped blank 1 ，10≤α 1 Less than or equal to 45 degrees; radial feed rate f of rotor 1 ，f 1 Less than or equal to 5mm/r; rotational speed n of circular plate-shaped blank 1 ，n 1 ≤50r/min。
Preferably, in the step C, the shear spinning forming process parameters are as follows: round corner r formed by rotary wheel 2 ＝(1～3)t 0 The method comprises the steps of carrying out a first treatment on the surface of the Included angle between rotation axis of rotary wheel and blank axis of plate-like blank
Spin wheel feed rate f 2 ，0.5mm/r≤f 2 Less than or equal to 4mm/r; rotational speed n of plate-like blank 1 ，n 1 ≤100r/min。
The invention has the following advantages:
(1) After accounting, the taper cylindrical thin-wall part is formed and processed by adopting a spinning forming process, and compared with a forging forming process, the material utilization rate is improved to 23% from 10% of the raw materials, so that the raw material cost of noble metal is saved;
(2) The production period of the original forging process is about 1 month, and the processing time of parts can be shortened to 4 days by adopting the process method provided by the invention, so that the production efficiency is greatly improved.
Drawings
FIG. 1 is a schematic diagram of a cone-shaped thin-walled part structure;
FIG. 2 is a schematic diagram of a blank structure of a conical cylindrical thin-walled part;
FIG. 3 is a schematic diagram of shoveling and forming a cylindrical structure of a conical thin-walled part;
FIG. 4 is an enlarged view of a portion of FIG. 3;
FIG. 5 is a schematic view of a tapered thin-wall structure shear spin forming structure of a tapered cylindrical thin-wall part;
FIG. 6 is a schematic view of a conical thin-walled part of example 1;
fig. 7 is a schematic view of a plate blank for a conical thin-walled part of example 1.
Wherein, 1-spinning wheel, 2-tail top disc, 3-conical tubular thin wall part's platy blank, 4-cylindric structure, 5-backup pad, 6-conical thin wall structure, 7-mandrel.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1:
in the embodiment, the target part is made of red copper T2, the structural dimension is shown in figure 6, the outer diameter phi 228+/-0.2 mm of the small-end cylindrical structure, and the inner diameter phi 220+/-0.2 mm; the wall thickness of the taper thin-wall structure from the throat to the large end is 7+/-0.2 mm, the outer diameter phi of the large end is 630+/-0.5 mm, and the taper angle is 60 degrees.
The preparation method of the embodiment is as follows:
machining a plate-shaped blank, shoveling and spin forming of a cylindrical structure of a part, shearing and spin forming of a conical thin-wall structure of the part, and machining the allowance at two ends.
(1) Adding a plate machine into a plate blank, wherein the structural size of the plate blank is calculated according to a calculation formula in the summary of the invention, and the calculation result is as follows:
a. the thickness of the plate-shaped blank boss is 5mm;
b. the excircle of the plate-shaped blank boss is 350mm;
c. the thickness of the platy blank is 19mm;
d. 660mm of excircle of the platy blank;
e. the inner diameter of the platy blank is 88mm.
(2) As shown in fig. 3, the plate-shaped blank 3 of the part is shoveled and screwed into a small-end cylindrical structure 4, and the equipment used in the embodiment is a CZX800/3CNC numerical control power spinning machine, and a siemens 840D control system is adopted. Before production, the supporting plate 5 is required to be installed on a main shaft of equipment, and the main shaft is rotated through a servo motor; the rotary wheel 1 is arranged on a rotary wheel seat of the equipment, and the rotary wheel seat is driven by a hydraulic cylinder to realize radial and axial feeding movement of the rotary wheel; the tail top disc 2 is arranged on a tail ejector rod of the equipment, so that the axial movement of the tail top disc 2 is realized.
The plate-shaped blank 3 is sleeved on the tail top disc 2, the tail top disc 2 is used for propping the plate-shaped blank 3 against the supporting plate 5, the main shaft rotates together with the supporting plate, the rotary wheel 1 moves radially and axially according to a preset program, and the shoveling rotary forming of the small-end cylindrical structure 4 of the part is completed. The main technological parameters of the shoveling and rotating forming are as follows:
a. the rotary wheel forms a round angle of 2mm;
b. the included angle between the rotation axis of the rotary wheel and the axis of the circular plate-shaped blank is 30 degrees;
c. the radial feeding rate of the rotary wheel is 2mm/r:
d. the rotating speed of the round plate-shaped blank is 30r/min.
(3) As shown in fig. 5, the plate blank of the part is cut and spun into a conical thin-wall structure 6, and the equipment used in the embodiment is a CZX800/3CNC numerical control powerful spinning machine, and a siemens 840D control system is adopted. Before production, the mandrel 7 is required to be installed on a main shaft of equipment, and the main shaft is rotated through a servo motor; the rotary wheel 1 is arranged on a rotary wheel seat of the equipment, and the rotary wheel seat is driven by a hydraulic cylinder to realize radial and axial feeding movement of the rotary wheel; the tail top disk 2 is arranged on a tail ejector rod of the equipment, so that the axial movement of the tail top disk can be realized.
The plate-shaped blank 3 is sleeved on the tail top disc 2, the tail top disc 2 is used for propping the plate-shaped blank 3 against the end face of the core mould 7, the spindle is attached with the core mould to rotate together, the spinning wheel 1 realizes radial and axial movement according to a preset program, and the conical thin-wall structure 6 of the large end of the part is formed by shearing and spinning. The main technological parameters of the shear spinning forming are as follows:
a. the rotary wheel forms a round angle of 14mm;
b. the included angle between the rotation axis of the rotary wheel and the axis of the platy blank is 30 degrees;
c. the feeding speed of the spinning wheel is 3mm/r;
d. the rotation speed of the plate-shaped blank is 50r/min.
(4) Machining the allowance of the two ends to obtain a qualified product.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (3)
1. The manufacturing method of the conical thin-wall part is characterized by comprising the following steps of:
A. designing a platy blank of the conical thin-walled part, calculating the structural size of the platy blank according to the size of the conical thin-walled part, and then processing the plate into the required size of the platy blank:
thickness of boss of plate-like blank
The outer circle d3= (1.25-4) d1 of the plate-shaped blank boss,
thickness of plate-like blank
Outer circle d4=d2+ (1.5-3) (t) 1 -t 2 )，
The inner diameter d2= (0.25-0.75) D1 of the platy blank,
wherein D1 is the outer diameter of the small-end cylindrical structure, D1 is the inner diameter of the small-end cylindrical structure, t 0 The wall thickness from the throat part to the large end is of a conical thin-wall structure, theta is the cone angle, and d2 is the outer diameter of the large end;
B. the cylindrical structure of the conical thin-walled part is shoveled and formed, a rotary wheel with a round angle radius is used for cutting into a plate surface along a direction forming an angle with the axis of a rotating plate-shaped blank and is shoveled and rolled radially, so that the blank is divided into two parts, and one part is not acted by shoveling and rolling force and is left in place; the other part is shoveled and rolled by a rotary wheel in an inclined way to generate radial flow, so that a cylindrical structure can be obtained;
C. the conical thin-wall structure of the conical thin-wall part is cut and spin-formed, a platy blank is pressed on the end face of a core mold by a tailstock disc and rotates along with a main shaft, a spinning wheel transversely approaches the platy blank and keeps a certain gap value with the core mold, meanwhile, the spinning wheel makes uniform motion through longitudinal feeding motion of the spinning wheel, and at the moment, the spinning wheel applies pressure to the platy blank to enable the material to axially shear and deform point by point and cling to the core mold, so that the conical thin-wall structure with thinned wall thickness can be obtained;
D. machining the allowance of two end surfaces of the cone-shaped thin-wall part.
2. The method for manufacturing a tapered cylindrical thin-walled part according to claim 1, wherein: in the step B, the shoveling and spin forming process parameters are as follows: round corner r formed by rotary wheel 1 0.5-3 mm; included angle alpha between rotation axis of rotary wheel and axis of circular plate-shaped blank 1 ，10≤α 1 Less than or equal to 45 degrees; radial feed rate f of rotor 1 ，f 1 Less than or equal to 5mm/r; rotational speed n of circular plate-shaped blank 1 ，n 1 ≤50r/min。
3. The method for manufacturing a tapered cylindrical thin-walled part according to claim 1, wherein: in the step C, the shearing and spinning forming process parameters are as follows: round corner r formed by rotary wheel 2 ＝(1～3)t 0 The method comprises the steps of carrying out a first treatment on the surface of the Included angle between rotation axis of rotary wheel and blank axis of plate-like blank
Spin wheel feed rate f 2 ，0.5mm/r≤f 2 Less than or equal to 4mm/r; rotational speed n of plate-like blank 1 ，n 1 ≤100r/min。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023101084959 | 2023-02-07 | ||
| CN202310108495 | 2023-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116274583A true CN116274583A (en) | 2023-06-23 |
Family
ID=86826741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310205592.XA Pending CN116274583A (en) | 2023-02-07 | 2023-03-06 | Manufacturing method of conical cylindrical thin-wall part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116274583A (en) |
-
2023
- 2023-03-06 CN CN202310205592.XA patent/CN116274583A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107552629B (en) | A kind of multistage depth cylinder depth circular cone combinatorial surface housing part spin forming method | |
| CN109500188B (en) | Molybdenum crucible double-wheel offset hot-state powerful spinning forming device and method | |
| CN110479842B (en) | Rolling-spinning composite forming method for large-sized thin-wall Y-shaped ring part | |
| CN106734481B (en) | A kind of Small Taper cylindrical member composite spinning processing method | |
| CN104889681B (en) | A kind of processing method of hubbed flange | |
| CN109909356B (en) | Spinning forming method of deep-cone-shaped thin-wall rotating part with flange | |
| CN106552852B (en) | A kind of reversed spinning processing method of Small Taper cylindrical member | |
| CN113084053B (en) | Rolling extrusion composite near-net forming method for large inner contour abrupt cross-section ring piece | |
| CN106623611B (en) | A kind of combined shaping method of the depth bipyramid with top dome shape thin-wall part | |
| CN109772988B (en) | Method for adjusting offset of spinning wheel for offset spinning of cylindrical part | |
| CN108372223B (en) | Spinning forming method of thin-wall curved bus-shaped part | |
| CN108015149A (en) | A kind of strong revolving shaping method of housing seamless pipe | |
| CN100337768C (en) | Method for forming two conical sestion ring pieces by once cold rolling spreading | |
| CN112058992A (en) | Spinning forming method of curved bus deformed wall thickness aluminum alloy hemispherical part | |
| CN116274583A (en) | Manufacturing method of conical cylindrical thin-wall part | |
| CN109382435B (en) | Internal spinning equipment | |
| CN112916706A (en) | Common spin machining method for thin-wall complex workpiece | |
| CN104209708A (en) | Processing method of axial flow fan casing | |
| CN102146769A (en) | Manufacture method for machining equivalent-thickness rubber inner jacket layer threaded rod drilling tool stator and device thereof | |
| CN106734482B (en) | A kind of high intensity high-precision small-angle method for manufacturing parts | |
| CN102921847B (en) | A kind of precision rolling manufacturing process of cylindrical member and device | |
| CN109622713B (en) | Room-temperature spinning forming method for nickel-based high-temperature alloy composite curved bus member difficult to deform | |
| CN116213540A (en) | Active powerful rotary rolling sectional progressive forming process for inner rib thin-wall cylinder body and inner and outer paired wheels | |
| CN109201830B (en) | A method of preventing flange defect occur without bottomless drum shape part spinning process | |
| CN111151631B (en) | Multi-pass spinning forming clamping structure and spinning method for variable cross-section guide pipe of oil tank |
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 |