CN103586381A - Cold-forging forming method for flange parts with round corners smaller than R zero point five - Google Patents

Cold-forging forming method for flange parts with round corners smaller than R zero point five Download PDF

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Publication number
CN103586381A
CN103586381A CN201210293766.4A CN201210293766A CN103586381A CN 103586381 A CN103586381 A CN 103586381A CN 201210293766 A CN201210293766 A CN 201210293766A CN 103586381 A CN103586381 A CN 103586381A
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China
Prior art keywords
depression
forging
cylinder
bed die
mold
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CN201210293766.4A
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CN103586381B (en
Inventor
王欣
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De Jahan Kim (Cangzhou) Precision Mold Co., Ltd.
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SUZHOU HANJIN MOLD TECHNOLOGY CO LTD
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Abstract

The invention discloses a cold-forging forming method for flange parts with round corners smaller than R zero point five. The cold-forging forming method comprises the following steps of preparation, preliminary upsetting, further upsetting, preliminary forming and local squeezing. A machining process is changed, and a flange embryonic form is formed by the preliminary upsetting, and then is locally squeezed to obtain the finished product of a flange. The energy consumption can be effectively reduced, materials are saved, the production efficiency is improved, the mechanical performance of machined workpieces is improved, the economic benefit is effectively improved, and the market competitiveness is increased. The cold-forging forming method is simple in process; a beneficial effect is high; and moreover, the cold-forging forming method is convenient to popularize and use.

Description

A kind of fillet is less than the cold-forging forming method of the flange part of R 0. 5
Technical field
The present invention relates to a kind of production method of metal works, especially a kind of production technology of flange.
Background technology
Along with scientific and technical progress, the raising of industrialization degree, increasing part adopts the technique of cold forging direct forming.Production for small round corner flange, owing to being difficult to cold forging direct forming, the processing technology conventionally adopting is in the market for first forging the basic configuration mode of local mechanical processing again, and the method also needs to carry out machining after forging, production efficiency is low, consumptive material is large and power consumption of polymer processing is large, is unsuitable for the social orientation of economized, therefore, change the processing technology of flange, simplify procedure of processing, save production cost, reducing energy consumption is the primary problem solving of current flange production industry.
Summary of the invention
Goal of the invention: the object of the invention is, in order to overcome the deficiencies in the prior art, provides a kind of processing technology simple, the processing technology of the flange of the high and less energy consumption of production efficiency.
Technical scheme: in order to solve the problems of the technologies described above, a kind of fillet of the present invention is less than the cold-forging forming method of the flange part of R 0. 5, comprises step
(a) cut off operation: prepare Steel material to be processed, adopt multistage cold former Steel material to be cut into the cylinder blank of Len req;
(b) preliminary jumping-up: the first station mold that adopts cold headers and bed die are by the cylinder Upsetting Forgings shape described in step (a) and mold and the corresponding forging of bed die, the part that described forging top contacts with mold forms the forging position A corresponding with mold shape, and the part that bottom contacts with bed die forms the forging position B corresponding with bed die shape;
(c) further jumping-up: adopt the forging described in mold and the further jumping-up step of bed die (b), forging position A is pressed into the pie corresponding with mold shape, the upper surface of described forging position A arches upward, and forging position B is pressed into shape corresponding with bed die;
(d) preliminarily forming: adopt mold that the upper surface of the forging position A described in step (c) is flattened, the rounded at the edge of described forging position A is greater than R 0. 5, adopts bed die that forging position B step (c) Suo Shu is pressed into the shape corresponding with bed die;
(e) local extruding: the edge of forging position A is squeezed into the face of cylinder perpendicular with forging upper surface, forms the flange finished product that fillet is less than R 0. 5.
To be provided with the coaxial width of one or more and mold be 0.1-0.3mm to the finished surface of mold in described step (c), the circular groove that the degree of depth is 0.1-0.3mm.
Mold in described step (b) is comprised of one or more moulds, in the middle of described mold, be provided with depression, described depression top is that cylinder depression bottom is spherical zone shape depression, described cylinder depression and spherical zone shape depression form whole depression, described spherical zone shape depression upper bottom surface diameter is identical with described cylinder depression bottom surface diameter, and described cylinder depression bottom surface diameter is than the large 0.1-0.5mm of cylinder upper bottom surface diameter in step (a).
Bed die in described step (b) is comprised of one or more moulds, in the middle of described bed die, be provided with depression, described depression top is that spherical zone shape depression bottom is cylinder depression, described spherical zone shape depression and cylinder depression form whole depression, described spherical zone shape depression bottom surface diameter is identical with the upper bottom surface diameter of described cylinder depression, and described cylinder depression bottom surface diameter is than the large 0.1-0.5mm of the middle cylinder bottom surface diameter of step (a).
The total bed die of described step (d) is comprised of one or more moulds, in the middle of described bed die, be provided with depression, described depression top is that frustum of a cone bottom is cylinder, and described frustum of a cone upper surface is greater than lower surface, and the described frustum of a cone and cylinder are an integral body.
Beneficial effect: compared with prior art, the invention has the advantages that: the present invention is by changing processing technology, by being first tentatively upset as the local extruding again of flange blank, obtain the method for finished product flange, can effectively reduce energy consumption, save material, enhance productivity, improve the mechanical performance of workpiece to be machined, effectively increase economic efficiency, improve the market competitiveness, technique of the present invention is simple, beneficial effect is obvious, is convenient to promote the use of.
Accompanying drawing explanation
Fig. 1 is the structural representation of the forging described in step (b);
Fig. 2 is the structural representation of mold in step (b);
Fig. 3 is the structural representation of bed die in step (b);
Fig. 4 is flange finished product structure schematic diagram;
Fig. 5 is the structural representation of bed die in step (d);
Wherein: 1. forging position A, 2. forging position B, 3. depression, 31. cylinder depressions, 32. spherical zone shape depressions, 4. depression, 41, spherical zone shape depression, 42. cylinder depressions, 5. flange finished product, 6. depression, 61. frustums of a cone, 62. cylinders, 611. frustum of a cone upper surfaces, 612. frustum of a cone lower surfaces.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail, should understand these embodiment and only for the present invention is described, is not used in and limits the scope of the invention.
A kind of high by 28.43, the manufacturing process of the small round corner flange that flange diameter is 52:
(a) cut off operation: prepare Steel material to be processed, described employing multistage cold former cuts into high 62.2mm by Steel material, the cylinder forging that bottom surface diameter is 20.7mm;
(b) preliminary jumping-up: the first station mold that adopts cold headers and bed die are by the cylinder Upsetting Forgings shape described in step (a) and mold and the corresponding forging of bed die, the part that described forging top contacts with mold forms the forging position A1 corresponding with mold shape, the part that bottom contacts with bed die forms the forging position B2 corresponding with bed die shape, described bed die is comprised of one or more moulds, described mold is comprised of one or more moulds, in the middle of described mold, be provided with depression 3, described depression 3 tops are that cylinder depression 31 bottoms are spherical zone shape depression 32, described cylinder depression 31 forms whole depression 3 with spherical zone shape depression 32, described spherical zone shape depression 32 upper bottom surface diameters are identical with described cylinder depression 31 bottom surface diameters, described cylinder depression 31 bottom surface diameters are than the large 0.1mm of cylinder upper bottom surface diameter in step (a), in the middle of described bed die, be provided with depression 31, described depression 4 tops are that spherical zone shape depression 41 bottoms are cylinder depression 41, described spherical zone shape depression 41 forms a whole depression 4 with cylinder depression 42, described spherical zone shape depression 41 bottom surface diameters are identical with the upper bottom surface diameter of described cylinder depression 42, described cylinder depression 42 bottom surface diameters are than the large 0.15mm of the middle cylinder bottom surface diameter of step (a), this step needs 45 tons of pressure, die face is pressed 1500MPa,
(c) further jumping-up: adopt the forging described in mold and the further jumping-up step of bed die (b), forging position A1 is pressed into the pie corresponding with mold shape, the upper surface of described forging position A1 arches upward, forging position B2 is pressed into shape corresponding with bed die, it is 0.2mm that the finished surface of described mold is provided with the coaxial width of one or more and mold, the degree of depth is the circular groove of 0.2mm, and this operation needs 154 tons of pressure, and die face is pressed 1950MPa;
(d) preliminarily forming: adopt mold that the upper surface of the forging position A1 described in step (c) is flattened, the rounded at the edge at described forging position (A) is greater than R 0. 5, adopt bed die that forging position B2 step (c) Suo Shu is pressed into the shape corresponding with bed die, described bed die is comprised of one or more moulds, in the middle of described bed die, be provided with depression 6, described depression 6 tops are that the frustum of a cone 61 bottoms are cylinder 62, the described frustum of a cone 61 upper surfaces 611 are greater than lower surface 612, the described frustum of a cone 61 is an integral body with cylinder 62, this operation needs 251 tons of pressure, die face is pressed 1870MPa,
(e) local extruding: adopt mold and bed die that the edge of the forging position A1 described in step (d) is squeezed into the face of cylinder perpendicular with forging upper surface, form the flange finished product 5 that fillet is less than R 0. 5, this operation needs 4 tons of pressure, and die face is pressed 400MPa.

Claims (5)

1. fillet is less than a cold-forging forming method for the flange part of R 0. 5, it is characterized in that: comprise step
(a) cut off operation: prepare Steel material to be processed, adopt multistage cold former Steel material to be cut into the cylinder blank of Len req;
(b) preliminary jumping-up: the first station mold that adopts cold headers and bed die are by the cylinder Upsetting Forgings shape described in step (a) and mold and the corresponding forging of bed die, the part that described forging top contacts with mold forms the forging position A(1 corresponding with mold shape), the part that bottom contacts with bed die forms the forging position B(2 corresponding with bed die shape);
(c) further jumping-up: adopt the forging described in mold and the further jumping-up step of bed die (b), by forging position A(1) be pressed into the pie corresponding with mold shape, described forging position A(1) upper surface arches upward, by forging position B(2) be pressed into shape corresponding with bed die;
(d) upper surface preliminarily forming: adopt mold by the forging position A(1 described in step (c)) flattens, the rounded at the edge at described forging position (A) is greater than R 0. 5, adopts bed die by forging position B(2 step (c) Suo Shu) be pressed into the shape corresponding with bed die;
(e) edge local extruding: by forging position A(1) is squeezed into the face of cylinder perpendicular with forging upper surface, forms the flange finished product (5) that fillet is less than R 0. 5.
2. a kind of fillet according to claim 1 is less than the cold-forging forming method of the flange part of R 0. 5, it is characterized in that: to be provided with the coaxial width of one or more and mold be 0.1-0.3mm to the finished surface of mold in described step (c), the circular groove that the degree of depth is 0.1-0.3mm.
3. a kind of fillet of volume is less than the cold-forging forming method of the flange part of R 0. 5 according to claim 1, it is characterized in that: the mold in described step (b) is comprised of one or more moulds, in the middle of described mold, be provided with depression (3), described depression (3) top is that cylinder depression (31) bottom is spherical zone shape depression (32), described cylinder depression (31) forms a whole depression (3) with spherical zone shape depression (32), described spherical zone shape depression (32) upper bottom surface diameter is identical with described cylinder depression (31) bottom surface diameter, described cylinder depression (31) bottom surface diameter is than the large 0.1-0.5mm of cylinder upper bottom surface diameter in step (a).
4. a kind of fillet according to claim 1 is less than the cold-forging forming method of the flange part of R 0. 5, it is characterized in that: the bed die in described step (b) is comprised of one or more moulds, in the middle of described bed die, be provided with depression (4), described depression (4) top is that spherical zone shape depression (41) bottom is cylinder depression (42), described spherical zone shape depression (41) forms a whole depression (4) with cylinder depression (42), described spherical zone shape depression (41) bottom surface diameter is identical with the upper bottom surface diameter of described cylinder depression (42), described cylinder depression (42) bottom surface diameter is than the large 0.1-0.5mm of the middle cylinder bottom surface diameter of step (a).
5. a kind of fillet according to claim 1 is less than the cold-forging forming method of the flange part of R 0. 5, it is characterized in that: the total bed die of described step (d) is comprised of one or more moulds, in the middle of described bed die, be provided with depression (6), described depression (6) top is that the frustum of a cone (61) bottom is cylinder (62), the described frustum of a cone (61) upper surface (611) is greater than lower surface (612), and the described frustum of a cone (61) is an integral body with cylinder (62).
CN201210293766.4A 2012-08-17 2012-08-17 Cold-forging forming method for flange parts with round corners smaller than R zero point five Active CN103586381B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4425779A (en) * 1979-01-12 1984-01-17 Diemer Donald J Method of making single or double flanged track tractor roller for off-highway equipment
US20030196468A1 (en) * 2002-04-19 2003-10-23 Ngk Spark Plug Co., Ltd. Method of making a flanged tubular metallic part
CN101293267A (en) * 2008-05-23 2008-10-29 江阴风电法兰制造有限公司 Continuous upsetting method for large flange at axle end of large-scale wind power principal axle
CN102581575A (en) * 2012-03-21 2012-07-18 苏州新凌电炉有限公司 Fabrication process of hexagonal flange toothed bolt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4425779A (en) * 1979-01-12 1984-01-17 Diemer Donald J Method of making single or double flanged track tractor roller for off-highway equipment
US20030196468A1 (en) * 2002-04-19 2003-10-23 Ngk Spark Plug Co., Ltd. Method of making a flanged tubular metallic part
CN101293267A (en) * 2008-05-23 2008-10-29 江阴风电法兰制造有限公司 Continuous upsetting method for large flange at axle end of large-scale wind power principal axle
CN102581575A (en) * 2012-03-21 2012-07-18 苏州新凌电炉有限公司 Fabrication process of hexagonal flange toothed bolt

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Effective date of registration: 20180319

Address after: 061100 Cangzhou city of Hebei Province, Huanghua City Industrial Park in the north of the city of YANGSANMU Village

Patentee after: De Jahan Kim (Cangzhou) Precision Mold Co., Ltd.

Address before: 215400, No. 6 West Beijing Road, Taicang Economic Development Zone, Taicang, Jiangsu, Suzhou

Patentee before: Suzhou Hanjin Mold Technology Co.,Ltd.