CN106955902B - Shaping dies and its manufacturing process are squeezed in a kind of rotation of tubing - Google Patents
Shaping dies and its manufacturing process are squeezed in a kind of rotation of tubing Download PDFInfo
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- CN106955902B CN106955902B CN201710388738.3A CN201710388738A CN106955902B CN 106955902 B CN106955902 B CN 106955902B CN 201710388738 A CN201710388738 A CN 201710388738A CN 106955902 B CN106955902 B CN 106955902B
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- tubing
- rotation
- section
- squeezed
- punch
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/18—Making uncoated products by impact extrusion
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Forging (AREA)
Abstract
Crowded shaping dies is revolved the invention discloses a kind of tubing and its manufacturing process, the mold are made of punch, cavity plate and core model;The forming cavity of cavity plate from top to bottom squeezes section by introduction segment, rotation successively, export section forms;The crowded section of off-axis rotation revolves crowded section by level-one and two level rotation is squeezed section and formed;The combined shaping mode that the extruding of tubing is combined with torsional shear can be achieved in the present invention, has deformation effect good, speed is fast, and efficient advantage can meet the needs of research and production in material science engineering.
Description
Technical field
The invention belongs to material extrusion technique fields, and in particular to shaping dies and its moulding material are squeezed in a kind of rotation of tubing
Method.
Background technology
Tubing is widely used important source material in industrial production.The Technology of Plastic Processing of tubing due to low energy consumption,
The advantages that material saving, high efficiency, becomes the main means of tubular object extruding.Based on traditional methods for forming tubular product, violent plasticity becomes
Shape derives a series of novel tube forming mode, for example, Tubular channel angular pressing, Tube
Channel pressing and High-pressure tube twisting etc. (Sci China Tech Sci, 2012,55:1-
6), in addition, application publication number applying for a patent it is also proposed that being squeezed in traditional tubing for CN104307908A and CN102430609A
Increase the large plastometric set that other torsional deflection modes realize material on the basis of compressive strain, to improve the forming effect of tubing
Rate.
Realize that the forming of tubing is a research direction of current tube plastic forming by big plastic deformation, using multiple
The forming efficiency of tubing can be effectively improved by closing load mode, and it is a kind of very promising forming tubular product that extruding and torsion, which are combined,
Mode.
Invention content
The present invention is intended to provide a kind of rotation of tubing squeeze the method for shaping dies and its manufacturing process, it can be achieved that tubing extruding
The combined shaping mode being combined with torsion, improves the efficiency of improvement and the forming of materials microstructure.
The tubing rotation of the present invention is squeezed shaping dies and is made of punch, cavity plate and core model.
Punch is a tube body, and the outer diameter of annular cross section is D, and the length of internal diameter D3, punch are L;
Cavity plate is a cylindrical cylinder, and the forming cavity of cavity plate from top to bottom squeezes section, export section by introduction segment, rotation successively
The length of composition, cavity plate is 1.75L;
The cross section of introduction segment is the circle of a diameter of D, and the length of introduction segment is L;
The crowded section of rotation revolves crowded section by level-one and two level rotation is squeezed section and formed;
The upper surface that section is squeezed in level-one rotation is the big circle of a diameter of D, and lower face is the middle circle of a diameter of D1, and level-one rotation is squeezed
Section length be L/4, level-one rotation squeeze section upper surface the big circular center of circle and lower face in the circular center of circle horizontal plane throw
A distance M is differed on shadow, the middle round generation in the horizontal plane that level-one revolves the big circle and lower face for squeezing section upper surface is clockwise
Torsion, torsion angle are β/2, and β is 15 °~30 °;
The upper surface that section is squeezed in two level rotation is the middle circle of a diameter of D1, and lower face is the small circular of a diameter of D2, two level rotation
The length for squeezing section is L/4, and middle round and lower face the small circular that section upper surface is squeezed in two level rotation occurs clockwise in the horizontal plane
Torsion, torsion angle are β/2;
The center of circle that the small circular in the big circular center of circle of the upper surface of section and the lower face of the crowded section of two level rotation is squeezed in level-one rotation exists
It is overlapped in horizontal plane projection;
The cross section of export section is the circle of a diameter of D2, and the length for exporting section is L/4;
Core model is a cylindrical barred body, a diameter of D3 of circular cross section, length 1.75L;
The D3 < D2 < D1 < D;
0 < D2-D3≤(D-D3)/2;
The 0 < M < (D1-D3)/2.
The present invention use aforementioned tubes rotation squeeze shaping dies manufacturing process the step of for:
Step 1 prepares:The forming cavity that the cavity plate of shaping dies is squeezed in tubing rotation is cleaned, inside and outside the first preform tubing
Extrusion lubricant is smeared on the forming cavity for the cavity plate that shaping dies is squeezed in surface, punch, core model and tubing rotation;
Step 2, assembly:First preform tubing is positioned over to the forming cavity of the cavity plate of the crowded shaping dies of tubing rotation
In introduction segment, the upper surface that section is squeezed in the lower face of the first preform tubing and level-one rotation is in contact, the first preform tubing it is upper
End face is to squeeze end face, and core model is inserted into the first preform tubing, and core model is put into the cavity plate of the crowded shaping dies of tubing rotation
In the introduction segment for shaping cavity, one end of punch is connected to the clamping fixing end of pressurizing unit, and the other end is to squeeze working end, with
The extruding end face of first preform tubing is in contact;
Step 3, extrusion molding:Pressurizing unit is opened, punch squeezes the first preform with the extrusion speed of 1~10mm/s
Tubing, when the lower face weight of the introduction segment of the forming cavity of the cavity plate of shaping dies is squeezed in extruding operative end surface and the tubing rotation of punch
When conjunction, pressurizing unit is closed, stops the extruding operation of punch;
Step 4, extrusion molding:It is then turned on pressurizing unit, punch is promoted with the speed of 10~20mm/s, when punch is complete
When the forming cavity for the cavity plate for squeezing shaping dies from tubing rotation comes out, the second preform tubing is positioned over tubing rotation and squeezes finishing die
In the introduction segment of the forming cavity of the cavity plate of tool, pressurizing unit is opened, punch squeezes second in advance with the extrusion speed of 1~10mm/s
Forming tube, when the lower face weight for squeezing end face and the introduction segment of the forming cavity of the cavity plate of the crowded shaping dies of tubing rotation of punch
When conjunction, pressurizing unit is closed, stops the extruding operation of punch, the second preform tubing can be by the first preform tubing extruding pipe material
The forming cavity of the cavity plate of shaping dies is squeezed in rotation, and the first preform tubing passes through leading for the cavity plate of the crowded shaping dies of tubing rotation successively
Enter section, the deformation that rotation squeezes section, exports section, deformation is squeezed in the off-axis rotation for completing the first preform tubing;
Step 5, forming ending:Pressurizing unit is opened, punch is promoted with the speed of 10~20mm/s, and punch is completely from pipe
The forming cavity for the cavity plate that shaping dies is squeezed in material rotation comes out.
The manufacturing process of shaping dies is squeezed in aforementioned tubes rotation, and the outer diameter of the preform tubing is D, internal diameter D3, length
For L/2~3L/4.
The off-axis rotation that the present invention uses is extruded into the technical solution of shape, it can be achieved that the extruding of tubing was combined with torsional shear
Combined shaping mode.Tubing is limited by punch, die forming cavity and core model, is in strong three-dimensional compressive stress state,
Under the action of shear stress, crimp and torsional deflection occur for the interior tissue of material, and material can obtain more single than traditional
The deformation extent of pure extrusion molding bigger is conducive to refiner material tissue and improves material property.
It is provided by the invention a kind of for the crowded shaping dies of tubing rotation and its manufacturing process, the advantageous effect brought:This hair
Bright to have deformation effect good, speed is fast, and efficient advantage significantly improves the Stress distribution of material internal, simultaneously
Improve material comprehensive performance.The invention reasonable design is reliable, has many advantages, such as that manufacturing process is simple, easy to operate, is conducive to
Improve production efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram that shaping dies is squeezed in tubing rotation;
Fig. 2 is the forming cavity structure schematic diagram for the cavity plate that shaping dies is squeezed in tubing rotation;
Fig. 3 is that segment structure schematic diagram is squeezed in rotation;
Fig. 4 is the space geometry relational graph that section is squeezed in rotation;
Fig. 5 is the horizontal projection that section is squeezed in rotation;
In figure:1. section is squeezed in punch, 2. cavity plates, 3. core models, 4. introduction segments, 5. rotations, 6. export sections, 7. level-ones, which are revolved, squeezes section, 8.
Section is squeezed in two level rotation
Specific implementation mode
It is further illustrated the present invention below by embodiment, but is not limited to following embodiment.
Embodiment:Outer diameter is 20mm, internal diameter 10mm, the crowded shaping dies of tubing rotation and its manufacturing process that length is 50mm
Fig. 1~3 show that the structure of shaping dies is squeezed in tubing rotation, are made of punch 1, cavity plate 2 and core model 3.
Punch 1 is a tube body, and the outer diameter of annular cross section is 20mm, and the length of internal diameter 10mm, punch 1 are 80mm;
Cavity plate 2 is a cylindrical cylinder, and the forming cavity of cavity plate 2 from top to bottom squeezes section 5 by introduction segment 4, rotation successively, leads
Go out the composition of section 6, the length of cavity plate 2 is 140mm;
The cross section of introduction segment 4 is the circle of a diameter of 20mm, and the length of introduction segment 4 is 80mm;
The crowded section 5 of rotation revolves crowded section 7 by level-one and two level rotation is squeezed section 8 and formed;
The upper surface that section 7 is squeezed in level-one rotation is the big circle of a diameter of 20mm, and lower face is the middle circle of a diameter of 16mm, one
The length that section 7 is squeezed in grade rotation is 20mm, and level-one revolves the circular center of circle in the big circular center of circle and lower face of squeezing 7 upper surface of section and exists
One distance 2mm of difference in horizontal plane projection, level-one rotation squeeze big round and lower face the middle circle of 7 upper surface of section in the horizontal plane
Torsion clockwise occurs, torsion angle is 10 °;
The upper surface that section 8 is squeezed in two level rotation is the middle circle of a diameter of 16mm, and lower face is the small circular of a diameter of 14mm, two
The length that section 8 is squeezed in grade rotation is 20mm, and middle round and lower face the small circular that 8 upper surface of section is squeezed in two level rotation occurs in the horizontal plane
Torsion clockwise, torsion angle are 10 °;
Level-one rotation squeeze the upper surface of section 7 the big circular center of circle and two level rotation squeeze section 8 lower face small circular the center of circle
It is overlapped in horizontal plane projection;
The cross section of export section 6 is the circle of a diameter of 14mm, and the length of export section 6 is 20mm;
Core model 3 is a cylindrical barred body, a diameter of 10mm of circular cross section, length 140mm;
The present invention use aforementioned tubes rotation the step of being extruded into shape die forming method for:
Step 1 prepares:The forming cavity that the cavity plate 2 of shaping dies is squeezed in tubing rotation is cleaned, in the first preform tubing
Extrusion lubricant is smeared on the forming cavity for the cavity plate 2 that shaping dies is squeezed in outer surface, punch 1, core model 3 and tubing rotation;
Step 2, assembly:First preform tubing is positioned over to the forming cavity of the cavity plate 2 of the crowded shaping dies of tubing rotation
In introduction segment 4, the upper surface that section 7 is squeezed in the lower face of the first preform tubing and level-one rotation is in contact, the first preform tubing
Upper surface is to squeeze end face, and core model 3 is inserted into the first preform tubing, and core model 3, which is put into tubing rotation, squeezes the recessed of shaping dies
In the introduction segment 4 of the forming cavity of mould 2, one end of punch 1 is connected to the clamping fixing end of pressurizing unit, and the other end is to squeeze work
Make end, is in contact with the extruding end face of the first preform tubing;
Step 3, extrusion molding:Pressurizing unit is opened, punch 1 squeezes the first titanium alloy preform pipe with the extrusion speed of 5mm/s
Material, when the lower face of the introduction segment 4 of the forming cavity of the cavity plate 2 of shaping dies is squeezed in extruding operative end surface and the tubing rotation of punch 1
When coincidence, pressurizing unit is closed, stops the extruding operation of punch 1;
Step 4, extrusion molding:Be then turned on pressurizing unit, punch 1 is promoted with the speed of 15mm/s, when punch 1 completely from
When the forming cavity for the cavity plate 2 that shaping dies is squeezed in tubing rotation comes out, the second preform tubing is positioned over tubing rotation and squeezes finishing die
In the introduction segment 4 of the forming cavity of the cavity plate 2 of tool, pressurizing unit is opened, punch 1 squeezes second in advance with the extrusion speed of 5mm/s
Forming tube, when the lower end for squeezing end face and the introduction segment 4 of the forming cavity of the cavity plate 2 of the crowded shaping dies of tubing rotation of punch 1
When face overlaps, pressurizing unit is closed, stops the extruding operation of punch 1, the second preform tubing can squeeze the first preform tubing
Go out the forming cavity that the cavity plate 2 of shaping dies is squeezed in tubing rotation, the first preform tubing passes through tubing rotation and squeezes shaping dies successively
Deformation is squeezed in the deformation that the introduction segment 4 of cavity plate 2, rotation squeeze section 5, export section 6, the off-axis rotation for completing the first preform tubing;
Step 5, forming ending:Pressurizing unit is opened, punch 1 is promoted with the speed of 15mm/s, and punch 1 is completely from tubing
The forming cavity that the cavity plate 2 of shaping dies is squeezed in rotation comes out.
It is an object of the invention to propose a kind of simple to operation to squeeze shaping dies and its forming side for tubing rotation
Method has deformation effect good, speed is fast, efficiency, it can be achieved that the combined shaping mode that the extruding of tubing is combined with torsional shear
High advantage can meet the needs of research and production in material science engineering.It is specific real by changing the shape and size of mold
It applies that mode is constant, meets the forming requirements of different tubing, more embodiment inconvenience victory that shape are lifted.
Claims (3)
1. shaping dies is squeezed in a kind of tubing rotation, it is made of punch, cavity plate and core model, it is characterised in that:Cavity plate is one cylindrical
Cylinder, the forming cavity of cavity plate from top to bottom squeezes section by introduction segment, rotation successively, export section forms;
The punch is a tube body, and the outer diameter of annular cross section is D, and the length of internal diameter D3, punch are L;
The cavity plate is a cylindrical cylinder, and the length of cavity plate is 1.75L;
The cross section of the introduction segment is the circle of a diameter of D, and the length of introduction segment is L;
The crowded section of rotation revolves crowded section by level-one and two level rotation is squeezed section and formed;
The upper surface that section is squeezed in the level-one rotation is the big circle of a diameter of D, and lower face is the middle circle of a diameter of D1, and level-one rotation is squeezed
Section length be L/4, level-one rotation squeeze section upper surface the big circular center of circle and lower face in the circular center of circle horizontal plane throw
A distance M is differed on shadow, the middle round generation in the horizontal plane that level-one revolves the big circle and lower face for squeezing section upper surface is clockwise
Torsion, torsion angle are β/2, and β is 15 °~30 °;
The upper surface that section is squeezed in the two level rotation is the middle circle of a diameter of D1, and lower face is the small circular of a diameter of D2, two level rotation
The length for squeezing section is L/4, and middle round and lower face the small circular that section upper surface is squeezed in two level rotation occurs clockwise in the horizontal plane
Torsion, torsion angle are β/2;
The center of circle that the small circular in the big circular center of circle of the upper surface of section and the lower face of the crowded section of two level rotation is squeezed in the level-one rotation exists
It is overlapped in horizontal plane projection;
The cross section of the export section is the circle of a diameter of D2, and the length for exporting section is L/4;
The core model is a cylindrical barred body, a diameter of D3 of circular cross section, length 1.75L;
The D3 < D2 < D1 < D;
0 < D2-D3≤(D-D3)/2;
The 0 < M < (D1-D3)/2.
2. a kind of revolving the manufacturing process for squeezing shaping dies using tubing described in claim 1, it is characterised in that:Including following step
Suddenly:
Step 1 prepares:Clean the forming cavity that the cavity plate of shaping dies is squeezed in tubing rotation, the table inside and outside the first preform tubing
Extrusion lubricant is smeared on the forming cavity for the cavity plate that shaping dies is squeezed in face, punch, core model and tubing rotation;
Step 2, assembly:First preform tubing is positioned over the importing for shaping cavity that the cavity plate of shaping dies is squeezed in tubing rotation
The upper surface that Duan Zhong, the lower face of the first preform tubing and level-one revolve crowded section is in contact, the upper surface of the first preform tubing
To squeeze end face, core model is inserted into the first preform tubing, core model is put into the forming that the cavity plate of shaping dies is squeezed in tubing rotation
In the introduction segment of cavity, one end of punch is connected to the clamping fixing end of pressurizing unit, and the other end is to squeeze working end, with first
The extruding end face of preform tubing is in contact;
Step 3, extrusion molding:Pressurizing unit is opened, punch squeezes the first preform tubing with the extrusion speed of 1~10mm/s,
When the extruding operative end surface of punch is overlapped with the lower face of the introduction segment of the forming cavity of the cavity plate of the crowded shaping dies of tubing rotation,
Pressurizing unit is closed, the extruding operation of punch is stopped;
Step 4, extrusion molding:It is then turned on pressurizing unit, punch is promoted with the speed of 10~20mm/s, when punch is completely from pipe
When the forming cavity for the cavity plate that shaping dies is squeezed in material rotation comes out, the second preform tubing is positioned over tubing rotation and squeezes shaping dies
In the introduction segment of the forming cavity of cavity plate, pressurizing unit is opened, punch squeezes the second preform with the extrusion speed of 1~10mm/s
Tubing, the lower face for revolving the introduction segment of the forming cavity of the cavity plate of crowded shaping dies with tubing when the extruding end face of punch overlap
When, pressurizing unit is closed, the extruding operation of punch is stopped, the second preform tubing can revolve the first preform tubing extruding pipe material
The forming cavity of the cavity plate of shaping dies is squeezed, the first preform tubing passes through the importing that the cavity plate of shaping dies is squeezed in tubing rotation successively
Deformation is squeezed in the deformation that section, rotation squeeze section, export section, the off-axis rotation for completing the first preform tubing;
Step 5, forming ending:Pressurizing unit is opened, punch is promoted with the speed of 10~20mm/s, and punch is revolved from tubing completely
The forming cavity for squeezing the cavity plate of shaping dies comes out.
3. the manufacturing process of shaping dies is squeezed in tubing rotation according to claim 2, the outer diameter of the preform tubing is D,
Internal diameter is D3, and length is L/2~3L/4.
Priority Applications (1)
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CN201710388738.3A CN106955902B (en) | 2017-05-25 | 2017-05-25 | Shaping dies and its manufacturing process are squeezed in a kind of rotation of tubing |
Applications Claiming Priority (1)
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CN201710388738.3A CN106955902B (en) | 2017-05-25 | 2017-05-25 | Shaping dies and its manufacturing process are squeezed in a kind of rotation of tubing |
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CN106955902A CN106955902A (en) | 2017-07-18 |
CN106955902B true CN106955902B (en) | 2018-09-14 |
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Families Citing this family (7)
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CN107685084A (en) * | 2017-08-17 | 2018-02-13 | 西京学院 | A kind of tubing screw extrusion shaping dies and its application method |
CN107309381B (en) * | 2017-08-31 | 2020-02-07 | 西京学院 | Material extrusion die and forming method thereof |
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CN110340171A (en) * | 2018-05-18 | 2019-10-18 | 刘鹏宇 | A kind of forming die for pipe and its manufacturing process |
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CN111922106B (en) * | 2020-05-22 | 2022-10-25 | 湖南乾龙新材料有限公司 | Continuous torsion extrusion large plastic deformation method and application thereof |
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JP3119023B2 (en) * | 1993-04-15 | 2000-12-18 | 石川島播磨重工業株式会社 | Extrusion molding method and extrusion molding apparatus for twisted body |
RU2191652C1 (en) * | 2001-04-04 | 2002-10-27 | Глухов Дмитрий Евгеньевич | Method for producing blanks of small-grain structure |
JP5180759B2 (en) * | 2008-09-30 | 2013-04-10 | 昭和電工株式会社 | Drawing die |
CN102430609B (en) * | 2011-11-04 | 2013-10-16 | 西北工业大学 | Equal-passage variable-cross-section extruding mold and extrusion forming method for pipes |
CN104307908B (en) * | 2014-10-09 | 2016-04-27 | 太原理工大学 | A kind of method waiting channel formation mould and shaping pipe thereof of thick-wall tube |
CN104226711B (en) * | 2014-10-09 | 2016-07-06 | 太原理工大学 | A kind of many angular extrusion dies and manufacturing process |
CN104475475B (en) * | 2014-11-28 | 2016-03-23 | 太原理工大学 | One turns round crowded shaping dies and manufacturing process |
CN204545006U (en) * | 2015-04-08 | 2015-08-12 | 西安航空学院 | A kind of coaxial snakelike ECAP Die |
CN105728493B (en) * | 2016-03-11 | 2017-10-24 | 湖南大学 | A kind of combined type, which is turned round, squeezes the compound large plastometric set device of pier and manufacturing process |
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