CN103586381B - 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
CN103586381B
CN103586381B CN201210293766.4A CN201210293766A CN103586381B CN 103586381 B CN103586381 B CN 103586381B CN 201210293766 A CN201210293766 A CN 201210293766A CN 103586381 B CN103586381 B CN 103586381B
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depression
forging
cylinder
bed die
mold
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CN103586381A (en
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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 zero point five
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 the progress of science and technology, the raising of industrialization degree, increasing part adopts the technique of cold forging direct forming.For the production of small round corner flange, owing to being difficult to cold forging direct forming, the processing technology usually adopted in the market is the mode first forging basic configuration local mechanical processing again, also needs to carry out machining after the method 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 problem that current flange production industry primarily solves.
Summary of the invention
Goal of the invention: the object of the invention is to overcome the deficiencies in the prior art, provides a kind of processing technology simple, the high and processing technology of the flange of 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 zero point five, comprises step
A () cuts off operation: prepare Steel material to be processed, adopts multistage cold former Steel material to be cut into the cylinder blank of Len req;
(b) preliminary jumping-up: adopt the first station mold of cold headers and bed die by the cylinder Upsetting Forgings shape described in step (a) and mold and the corresponding forging of bed die, described forging top and the part that mold contacts form the forging position A corresponding with mold shape, and the part that bottom and bed die contact forms the forging position B corresponding with bed die shape;
C () be jumping-up further: adopt mold and the forging described in further jumping-up step (b) of bed die, 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 to be flattened by the upper surface of the forging position A described in step (c), the rounded at the edge of described forging position A is greater than R zero point five, adopts bed die that the forging position B described in step (c) is pressed into the shape corresponding with bed die;
E () local compression: the edge of forging position A is squeezed into the face of cylinder perpendicular with forging upper surface, namely forms the flange finished product that fillet is less than R zero point five.
In described step (c), the finished surface of mold is provided with one or more width coaxial with mold is 0.1-0.3mm, and the degree of depth is the circular groove of 0.1-0.3mm.
Mold in described step (b) is made up of one or more mould, depression is provided with in the middle of described mold, described depression top is cylinder depression bottom is spherical zone shape depression, described cylinder depression and spherical zone shape depression form overall depression, described spherical zone shape depression upper bottom surface diameter is identical with described cylinder depression bottom surface diameter, described cylinder depression basal diameter 0.1-0.5mm larger than the cylinder upper bottom surface diameter in step (a).
Bed die in described step (b) is made up of one or more mould, depression is provided with in the middle of described bed die, described depression top is spherical zone shape depression bottom is cylinder depression, described spherical zone shape depression and cylinder depression form overall depression, described spherical zone shape depression bottom surface diameter is identical with the upper bottom surface diameter of described cylinder depression, described cylinder depression bottom surface diameter 0.1-0.5mm larger than step (a) middle cylinder bottom surface diameter.
The bed die that described step (d) is total is made up of one or more mould, depression is provided with in the middle of described bed die, described depression top is 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 entirety.
Beneficial effect: compared with prior art, the invention has the advantages that: the present invention, by changing processing technology, is tentatively upset as flange blank local compression again by first, obtain the method for finished product flange, effectively can reduce energy consumption, save material, enhance productivity, improve the mechanical performance of workpiece to be machined, effectively increase economic efficiency, improve the market competitiveness, present invention process 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.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail, should understand these embodiments and only be not used in for illustration of the present invention and limit the scope of the invention.
A kind of high by 28.43, flange diameter is the manufacturing process of the small round corner flange of 52:
A () cuts off operation: prepare Steel material to be processed, Steel material is cut into high 62.2mm by described employing multistage cold former, and basal diameter is the cylinder forging of 20.7mm;
(b) preliminary jumping-up: adopt the first station mold of cold headers and bed die by the cylinder Upsetting Forgings shape described in step (a) and mold and the corresponding forging of bed die, described forging top and the part that mold contacts form the forging position A1 corresponding with mold shape, the part that bottom and bed die contact forms the forging position B2 corresponding with bed die shape, described bed die is made up of one or more mould, described mold is made up of one or more mould, depression 3 is provided with in the middle of described mold, described depression 3 top is cylinder depression 31 bottom is spherical zone shape depression 32, described cylinder depression 31 forms overall 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 basal diameter 0.1mm larger than the cylinder upper bottom surface diameter in step (a), depression 31 is provided with in the middle of described bed die, described depression 4 top is spherical zone shape depression 41 bottom is cylinder depression 41, described spherical zone shape depression 41 forms an overall 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 0.15mm larger than step (a) middle cylinder bottom surface diameter, this step needs pressure 45 tons, die face pressure 1500MPa,
C () be jumping-up further: adopt mold and the forging described in further jumping-up step (b) of bed die, 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 one or more width coaxial with mold, the degree of depth is the circular groove of 0.2mm, and this operation needs pressure 154 tons, die face pressure 1950MPa;
(d) preliminarily forming: adopt mold to be flattened by the upper surface of the forging position A1 described in step (c), the rounded at the edge at described forging position (A) is greater than R zero point five, adopt bed die that the forging position B2 described in step (c) is pressed into the shape corresponding with bed die, described bed die is made up of one or more mould, depression 6 is provided with in the middle of described bed die, described depression 6 top is 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, the described frustum of a cone 61 and cylinder 62 are an entirety, this operation needs pressure 251 tons, die face pressure 1870MPa,
(e) local compression: 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, namely the flange finished product 5 that fillet is less than R zero point five is formed, this operation needs pressure 4 tons, die face pressure 400MPa.

Claims (5)

1. fillet is less than a cold-forging forming method for the flange part of R zero point five, it is characterized in that: comprise step
A () cuts off operation: prepare Steel material to be processed, adopts multistage cold former Steel material to be cut into the cylinder blank of Len req;
(b) preliminary jumping-up: adopt the first station mold of cold headers and bed die by the cylinder Upsetting Forgings shape described in step (a) and mold and the corresponding forging of bed die, described forging top and the part that mold contacts form the forging position A(1 corresponding with mold shape), the part that bottom and bed die contact forms the forging position B(2 corresponding with bed die shape);
C () be jumping-up further: adopt mold and the forging described in further jumping-up step (b) of bed die, by forging position A(1) be pressed into the pie corresponding with mold shape, described forging position A(1) upper surface arch upward, by forging position B(2) be pressed into shape corresponding with bed die;
(d) preliminarily forming: adopt mold by the forging position A(1 described in step (c)) upper surface flatten, the rounded at the edge at described forging position (A) is greater than R zero point five, adopts bed die by the forging position B(2 described in step (c)) be pressed into the shape corresponding with bed die;
(e) local compression: by forging position A(1) edge be squeezed into the face of cylinder perpendicular with forging upper surface, namely form fillet and be less than the flange finished product (5) of R zero point five.
2. a kind of fillet according to claim 1 is less than the cold-forging forming method of the flange part of R zero point five, it is characterized in that: in described step (c), the finished surface of mold is provided with one or more width coaxial with mold is 0.1-0.3mm, and the degree of depth is the circular groove of 0.1-0.3mm.
3. a kind of fillet according to claim 1 is less than the cold-forging forming method of the flange part of R zero point five, it is characterized in that: the mold in described step (b) is made up of one or more mould, depression (3) is provided with in the middle of described mold, described depression (3) top is cylinder depression (31) bottom is spherical zone shape depression (32), described cylinder depression (31) and spherical zone shape depression (32) form an overall depression (3), described spherical zone shape depression (32) upper bottom surface diameter is identical with described cylinder depression (31) bottom surface diameter, described cylinder depression (31) basal diameter 0.1-0.5mm larger than the 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 zero point five, it is characterized in that: the bed die in described step (b) is made up of one or more mould, depression (4) is provided with in the middle of described bed die, described depression (4) top is spherical zone shape depression (41) bottom is cylinder depression (42), described spherical zone shape depression (41) and cylinder depression (42) form an overall depression (4), 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 0.1-0.5mm larger than step (a) middle cylinder bottom surface diameter.
5. a kind of fillet according to claim 1 is less than the cold-forging forming method of the flange part of R zero point five, it is characterized in that: the bed die in described step (d) is made up of one or more mould, depression (6) is provided with in the middle of described bed die, described depression (6) top is 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) and cylinder (62) are an entirety.
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 (3)

* 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
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3936230B2 (en) * 2002-04-19 2007-06-27 日本特殊陶業株式会社 Manufacturing method of flanged tubular metal fittings

Patent Citations (3)

* 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
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.