RU2620219C2 - Method of drawing thin-wall products of complex form - Google Patents

Method of drawing thin-wall products of complex form Download PDF

Info

Publication number
RU2620219C2
RU2620219C2 RU2016103351A RU2016103351A RU2620219C2 RU 2620219 C2 RU2620219 C2 RU 2620219C2 RU 2016103351 A RU2016103351 A RU 2016103351A RU 2016103351 A RU2016103351 A RU 2016103351A RU 2620219 C2 RU2620219 C2 RU 2620219C2
Authority
RU
Russia
Prior art keywords
workpiece
thin
technological
mandrel
transition
Prior art date
Application number
RU2016103351A
Other languages
Russian (ru)
Other versions
RU2016103351A (en
Inventor
Виктор Васильевич Леонтьев
Юрий Павлович Катаев
Алексей Александрович Лизунов
Original Assignee
Виктор Васильевич Леонтьев
Юрий Павлович Катаев
Алексей Александрович Лизунов
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Виктор Васильевич Леонтьев, Юрий Павлович Катаев, Алексей Александрович Лизунов filed Critical Виктор Васильевич Леонтьев
Priority to RU2016103351A priority Critical patent/RU2620219C2/en
Publication of RU2016103351A publication Critical patent/RU2016103351A/en
Application granted granted Critical
Publication of RU2620219C2 publication Critical patent/RU2620219C2/en

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20Deep-drawing
    • B21D22/21Deep-drawing without fixing the border of the blank

Abstract

FIELD: technological processes.
SUBSTANCE: technological plates are used with holes of dimensions not smaller than the dimensions of the workpiece, and thickness, depending on the plasticity of the workpiece material and the coupling radius of the working surfaces of the pressure head. The technological plates are installed on a profile mandrel corresponding to the complex form of a thin-walled product, with a package height equal to the depth of product drawing. Herewith on the periphery of the workpiece, the corrugations are smoothed out and form a circular section by movements of the pressing head along the mandrel. The drawing process is interrupted between the transitions to remove the next technological plate from the package and perform the following transition of drawing the product. In the first transition, a partially deformed product workpiece is obtained with a predetermined depth of drawing and a flat peripheral portion, and at each subsequent transition, the workpiece is drawn to a depth equal to the thickness of the previously removed process plate, and the corrugations are smoothed at the peripheral portion.
EFFECT: technological possibilities of drawing thin-walled products of complex shape in small-scale and single production are expanded.
3 cl, 3 dwg

Description

The invention relates to the field of sheet metal forming and can be used for the manufacture of thin-walled products of complex shape in small-scale and single production.
There is a method of drawing shells of a complex profile, in which the initial billet is mounted on a profile mandrel and exposed to the workpiece by deforming rollers with the separation of deformation between the rollers into several foci by radial displacement with equal radial forces by an amount that is set depending on the mechanical properties of the workpiece steel, the radius of the working profile of the roller and the thickness of the workpiece. The impact on the workpiece is carried out by rollers with different radiuses of the working surface, while the formation of the final profile of the workpiece is performed by a roller with the smallest radius (Patent RU No. 2343035 C2. Method of rotational drawing of shells of a complex profile. - IPC: B21D 22/16. - 10.01.2009).
A known method of manufacturing thin-walled shells of complex shape by multi-jaw pressure processing of a sheet billet fixed on a frame with longitudinal movement of the pressure tool, and shaping is carried out simultaneously by two pressure rollers, roughing and finishing. Moreover, the draft roller is set ahead of the movement relative to the finishing one, and the trajectories of the rollers are set separately for each roller, taking into account temperature deformations from heating of the frame at the previous transition (Patent RU No. 2511166 C1. Method for manufacturing thin-walled shells of complex shape. - IPC: B21D 22/16 B21D 51/16. - 04/10/2014). This method is adopted as a prototype.
A disadvantage of the known methods is the limited process of drawing thin-walled products of complex shape.
The main task, to the solution of which the claimed technical solution is directed, is the possibility of drawing thin-walled products of complex shape in small-scale and single-unit production.
The technical result achieved by the claimed technical solution is to expand the ability to extract thin-walled products of complex shape in small-scale and single production.
The specified technical result is achieved by the fact that in the known method of drawing thin-walled products of complex shape, including multi-jaw pressing processing of a flat sheet preform fixed on a profile mandrel corresponding to the complex shape of a thin-walled product, longitudinal movement of the pressure head made with the radius of mating of the working surfaces, and radial displacement regarding the mandrel according to the proposed technical solution,
For multi-jaw pressure processing of a flat sheet blank, technological plates are used with dimensions of at least not less than the size of the workpiece and a thickness depending on the plasticity of the workpiece material and the radius of mating of the working surfaces of the press head made with holes, the last plates being installed on the profile mandrel with a package of height equal to the depth of the product’s drawing, and multi-jaw pressing processing of a flat sheet preform is carried out by a hood on a mandrel with the formation of n the periphery of the workpiece of a flat circular section by smoothing the corrugations formed on the technological plates with radial displacements of the press head from the periphery of the workpiece to the center and back, interrupting the process of drawing the workpiece between the transitions to remove another technological plate from the package and perform the next transition of the workpiece drawing, for which the first transition is partially obtained a deformed workpiece with a given drawing depth and a flat peripheral section, and with each subsequent transition stretching ku workpiece operate at a depth equal to the thickness of the plate before the remote process, with smoothing of the corrugations on the peripheral portion;
holes in the technological plates correspond to the cross-sectional profile of the mandrel at the level of the transition of the workpiece hood;
multi-jaw pressure processing of a flat sheet blank is performed with a vibro-impact tool.
The analysis of the prior art by the applicant made it possible to establish that there are no analogues that are characterized by sets of features identical to all the features of the claimed method for drawing thin-walled products of complex shape. Therefore, the claimed technical solution meets the condition of patentability "novelty."
The search results for known solutions in the art in order to identify features that match the distinctive features of the prototype of the features of the claimed technical solution have shown that they do not follow explicitly from the prior art. From the prior art determined by the applicant, the influence of the transformations provided for by the essential features of the claimed technical solution on the achievement of the specified technical result is not revealed. Therefore, the claimed technical solution meets the condition of patentability "inventive step".
The claimed technical solution can be implemented at any engineering enterprise from well-known materials and accepted technology. Therefore, the claimed technical solution meets the condition of patentability "industrial applicability".
In FIG. 1 shows a diagram of the 1st transition of the hood of a thin-walled product; in FIG. 2 - the same, with the last transition; in FIG. 3 - end view.
The essence of the proposed method of drawing a thin-walled product of complex shape is that for drawing a flat sheet billet 1 of thickness b along with a profile mandrel 2 corresponding to the complex shape of the product, technological plates 3 with dimensions at least not smaller than the workpiece 1 are used, and thickness t, dependent on σ τ ductility material workpiece 1 and the radius r conjugation snubber working surfaces 4 formed with the holes, the latest technological plates 3 are mounted on n ofilnoy mandrel 2 package height h, equal to the depth of drawing of thin walled articles (FIG. 1). Extraction of thin-walled products of complex shape is performed by multi-jaw pressing processing of a flat thin sheet 1 fixed on a profile mandrel 2 with a clamp 5, using a vibro-impact tool with a pressing head 4 mounted on it, made with a radius r of mating of working surfaces. The thin-walled product is drawn by movements of the pressing head 4 along the profile mandrel 2 and radial displacements from the periphery of the workpiece 1 to the center and back to form a circular section 6 on the periphery of the workpiece 1 with smoothing corrugations formed on the technological plates 3 of the workpiece 1 during the drawing process , with the interruption of the drawing process between the transitions to remove another technological plate 3 from the package and performing the next drawing transition (Fig. 2). The holes in the technological plates 3 correspond to the cross-sectional profile of the mandrel 2 at the level of the transition of the workpiece hood. For this, a partially deformed billet 1 with a given drawing depth and a flat peripheral section 6 is obtained by the first transition, and each billet 1 is drawn to a depth equal to the thickness t of the removed technological plate 3 with smoothing of corrugations on the peripheral circular section 6 of the workpiece 1 of the product ( Fig. 3).
An example of the implementation of the extraction of thin-walled products of complex shape
An extrusion of a thin-walled box-shaped product with dimensions of 40 × 40 × 20 mm was carried out on a lathe by pressing processing of a flat sheet blank 1 of an aluminum alloy of grade D16M with a thickness of b = 1.5 mm on a mandrel 2 with a rectangular profile in the cross section corresponding to the box-shaped shape of the product, fixed on the faceplate 7 with the possibility of rotation in one or another direction of rotation. Press processing of the workpiece 1 was performed in five transitions with a press head 4 with a diameter of 15 mm with a radius of mating of working surfaces r = 3 mm using a vibro-impact tool, for example, a hammer, with a shock frequency of f = 100 Hz, moving the press head 4 along the mandrel 2 and radially displacing it from the periphery of the workpiece 1 to the center and back with the formation on the periphery of the workpiece 1 of a circular section 6. For pressing processing of the workpiece 1 used technological plates 3 of steel grade St20 with dimensions of at least not less E dimensions of the billet 1, and thickness t = 4 mm, chosen depending on the plasticity of the workpiece material σ τ 1 and radius r conjugation Surface snubber 4. Technological plate 3 are formed with holes corresponding to the sectional profile of the mandrel 2, and at the level of each the subsequent transition of the hood, with which the technological plates 3 were installed on the profile mandrel 2 with a package of height h = 4 mm × 4 = 16 mm, then they were sequentially removed from the mandrel 2 as the transitions were completed. The technological plates 3 were mounted on the faceplate 7 of the lathe using quick-release clamping elements 8. Before pressing the flat sheet blank 1, the latter was fixed on the end of the profile mandrel 2 with clamp 5 installed in the spindle of the back headstock of the lathe, with pressure P on the workpiece 1, providing a stable position of the flat sheet blank 1 at the end of the profile mandrel 2 from displacement under the influence of the torque caused by the forces of friction during pressing processing 1. Extraction was carried out on the profile mandrel 2 with the formation on the periphery of the workpiece 1 a flat circular section 6 by smoothing on the technological plates 3 the corrugations formed by the radial displacements of the pressure head 4 from the periphery of the workpiece 1 to the center and back, which made it possible to concentrate the mass of material for longitudinal drawing of the workpiece 1. Extraction of the workpiece 1 was carried out with interruption of the process between the transitions to remove another technological plate 3 from the package, during which the clamp 5 was removed from the workpiece 1, the last one was removed from the mandrel 2, is then severed coupling elements 8 are removed and the next technological plate 3. Then, the remaining packet processing plates 3 secured clamping elements 8 mounted on the mandrel 2 and the workpiece 1 pursed clamp 5, then perform the next hop extract product. In this case, the first transition received a partially deformed workpiece 1 with a certain drawing depth and a flat peripheral section 6. With each subsequent transition, the workpiece 1 was drawn to a depth of 4 mm equal to the thickness t = 4 mm of the previously removed technological plate 3, with smoothing on the next technological plate 3 corrugations formed on the peripheral section 6 during the drawing process. Corrugation was smoothed at the last transition of the hood was performed on the faceplate 7 of the lathe.
The proposed hood technology does not require expensive equipment and will allow more efficient to produce thin-walled products of complex shape in small-scale and single production.

Claims (3)

1. The method of drawing thin-walled products of complex shape, including fixing a flat thin-sheet blank on a profile mandrel corresponding to the complex shape of a thin-walled product, multi-transition pressing processing with a longitudinally moving pressing head made with a radius of mating of working surfaces and radial displacement relative to the mandrel, characterized in that they use technological plates with holes, the dimensions of each of which are at least not less than the dimensions of a flat sheet sheep, and the thickness selected depending on the plasticity of the material of the specified workpiece and the radius of mating of the working surfaces of the press head, install the said plates on the profile mandrel with a package of a height equal to the drawing depth of the thin-walled product, then the flat sheet blank is fixed at the end of the profile mandrel, during the pressure processing on the periphery of the drawn billet, the corrugations are smoothed to form a flat circular section by radial displacement of the pressure head from the periphery of the specified workpiece to the center and vice versa, interrupt the pressure treatment between the transitions and remove the technological plates from the bag in turn, while at the first transition of the pressure treatment a partially deformed workpiece with a given drawing depth and a flat peripheral section is obtained, and at each subsequent the transition, the workpiece is drawn to a depth equal to the thickness of the previously removed technological plate with smoothing the corrugations in its peripheral section.
2. The method according to p. 1, characterized in that the use of technological plates, the holes in which correspond to the cross-sectional profile of the mandrel at the level of the transition of pressure processing of the workpiece.
3. The method according to p. 1, characterized in that the pressure treatment of a flat sheet blank is performed with a vibro-impact tool.
RU2016103351A 2016-02-02 2016-02-02 Method of drawing thin-wall products of complex form RU2620219C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2016103351A RU2620219C2 (en) 2016-02-02 2016-02-02 Method of drawing thin-wall products of complex form

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2016103351A RU2620219C2 (en) 2016-02-02 2016-02-02 Method of drawing thin-wall products of complex form

Publications (2)

Publication Number Publication Date
RU2016103351A RU2016103351A (en) 2016-07-20
RU2620219C2 true RU2620219C2 (en) 2017-05-23

Family

ID=56413414

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2016103351A RU2620219C2 (en) 2016-02-02 2016-02-02 Method of drawing thin-wall products of complex form

Country Status (1)

Country Link
RU (1) RU2620219C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2685832C1 (en) * 2018-05-07 2019-04-23 Виктор Васильевич Леонтьев Method of forming hollow thin-wall parts of complex shape
RU2688041C1 (en) * 2018-04-23 2019-05-17 Виктор Васильевич Леонтьев Method for deep drawing thin-walled parts of complex shape and matrix for its implementation
RU2691016C1 (en) * 2018-06-26 2019-06-07 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тульский государственный университет" (ТулГУ) Device for drawing cylindrical shells from sheet metals with plane anisotropy of mechanical properties

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB792242A (en) * 1953-06-24 1958-03-26 Kellver A G Method of and apparatus for manufacturing seamless hollow parts open at one end
SU804086A1 (en) * 1979-03-21 1981-02-15 Birkin Vladimir Die for multiimpression drawing during one stroke of punch
RU2451572C1 (en) * 2011-04-26 2012-05-27 Владимир Павлович Серёдкин Method of producing sleeves from sheet material
RU2511166C1 (en) * 2012-09-07 2014-04-10 Открытое акционерное общество "Конструкторское бюро химавтоматики" Method of producing thin-wall complex-shape shells

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB792242A (en) * 1953-06-24 1958-03-26 Kellver A G Method of and apparatus for manufacturing seamless hollow parts open at one end
SU804086A1 (en) * 1979-03-21 1981-02-15 Birkin Vladimir Die for multiimpression drawing during one stroke of punch
RU2451572C1 (en) * 2011-04-26 2012-05-27 Владимир Павлович Серёдкин Method of producing sleeves from sheet material
RU2511166C1 (en) * 2012-09-07 2014-04-10 Открытое акционерное общество "Конструкторское бюро химавтоматики" Method of producing thin-wall complex-shape shells

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2688041C1 (en) * 2018-04-23 2019-05-17 Виктор Васильевич Леонтьев Method for deep drawing thin-walled parts of complex shape and matrix for its implementation
RU2685832C1 (en) * 2018-05-07 2019-04-23 Виктор Васильевич Леонтьев Method of forming hollow thin-wall parts of complex shape
RU2691016C1 (en) * 2018-06-26 2019-06-07 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тульский государственный университет" (ТулГУ) Device for drawing cylindrical shells from sheet metals with plane anisotropy of mechanical properties

Also Published As

Publication number Publication date
RU2016103351A (en) 2016-07-20

Similar Documents

Publication Publication Date Title
RU2620219C2 (en) Method of drawing thin-wall products of complex form
RU2468884C2 (en) Method of making rings
KR101188605B1 (en) A Manufacturing method for profiled ring used of semi-finished ring rolling machine
RU2638605C2 (en) Method for manufacturing thin-walled shells of complex form
DD245827A1 (en) Method for forming the production of hollow bodies from solid halves
RU2584195C1 (en) Method of making cylindrical components with conical part
RU2685832C1 (en) Method of forming hollow thin-wall parts of complex shape
RU2639202C2 (en) Method for drawing hollow cylindrical articles and drawing machine for its implementation
JP2005219122A (en) Method for producing ring with projection in inner periphery using hollow metal tube as blank
RU2688041C1 (en) Method for deep drawing thin-walled parts of complex shape and matrix for its implementation
RU2644091C2 (en) Method for rolling parts with curvilinear surface
RU2623567C1 (en) Method of rolling parts with curvilinear surface
RU2673591C1 (en) Method of manufacturing steel thin-wall axisymmetric vessels
CN106670364A (en) Variable-section thin-wall stainless steel hemisphere seal forming method
US9566641B2 (en) Forging apparatus
RU2700225C2 (en) Method of rotary drawing of thin-walled article (versions)
RU2491144C2 (en) Method of producing hollow cylindrical articles
RU2708806C1 (en) Method of rotary drawing of thin-walled article
RU2684332C2 (en) Method of manufacturing hollow products
RU2686503C1 (en) Method for combined pipe ends upsetting
RU2631997C1 (en) Method of producing polygonal pipe of low-ductile steel
RU2624882C2 (en) Method of manufacturing ring
SU1761349A1 (en) Method of manufacturing axisymmetric parts
SU743758A1 (en) Ring article producing method
JP5920129B2 (en) Hollow material rolling process